EP1807264A1 - Fan unit in a drier for a printer - Google Patents

Fan unit in a drier for a printer

Info

Publication number
EP1807264A1
EP1807264A1 EP05796360A EP05796360A EP1807264A1 EP 1807264 A1 EP1807264 A1 EP 1807264A1 EP 05796360 A EP05796360 A EP 05796360A EP 05796360 A EP05796360 A EP 05796360A EP 1807264 A1 EP1807264 A1 EP 1807264A1
Authority
EP
European Patent Office
Prior art keywords
blower unit
unit according
air duct
printing
gaseous medium
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
EP05796360A
Other languages
German (de)
French (fr)
Other versions
EP1807264B1 (en
Inventor
Volker Schröder
Uwe Rogge
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
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 Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP1807264A1 publication Critical patent/EP1807264A1/en
Application granted granted Critical
Publication of EP1807264B1 publication Critical patent/EP1807264B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/0403—Drying webs
    • B41F23/0423—Drying webs by convection
    • B41F23/0426—Drying webs by convection using heated air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes

Definitions

  • the invention relates to a blower unit for drying a printing material provided with printing ink in a printing press according to the preamble of claim 1 and to a method for producing a blower unit according to the preamble of claim 12.
  • blower units are usually components of dryers, which serve to dry freshly printed substrate.
  • the printing material is subjected to this with heated air so that the solvent present in the ink, which is still moist, evaporates more rapidly.
  • a printing press is usually equipped with a plurality of such dryers. In the transport direction of the printing material is behind each printing unit at least one such dryer.
  • Such a dryer therefore comprises at least one air supply unit which generates heated air.
  • air supply unit which generates heated air.
  • other suitable gases can be used instead of the air.
  • the heated air is forwarded via a Leitu ⁇ gs- and optionally distribution system to blower units.
  • These fan units serve to distribute the air supplied to them evenly over the entire width of the printing material.
  • the elongate blower units are aligned in their axial direction substantially transversely to the transport direction of the printing material.
  • the blower unit has, preferably at one of its end faces, a feed opening to which the air-supplying line can be connected.
  • the opposite end face of the blower unit can be closed.
  • the body of such a blower unit comprises a hollow body, wherein this can have any cross-section.
  • this hollow body is limited by the outer surface of the blower unit.
  • This hollow body serves as an air-conducting channel.
  • the blower unit has a plurality of openings through which the air is passed onto the printing material. The openings are mounted so that the air reaches the substrate by the shortest route. These openings can be introduced in the form of holes in the hollow body. In general, however, these are introduced into the hollow body recesses, such as punched.
  • a known fan unit is usually made of several sheets. To shape the hollow body, a corresponding sheet is folded. The openings are introduced into a second, in length substantially corresponding to the first metal sheet, which is then connected to the first plate in a suitable manner. For cost reasons, this is often a riveted joint. The front ends are obtained from other sheets, which also receive folds, which are then slipped over the end portions of the hollow body. The overlapping areas are then also riveted.
  • Object of the present invention is therefore to propose a blower unit and a manufacturing method, so that the blower unit can be produced more cheaply.
  • the blower unit contains extruded, deep-drawn or cast material.
  • blower units may be manufactured by cutting the corresponding extruded profile to the length needed for the blower units.
  • Another Machining, in particular a mechanical shaping can be dispensed with.
  • the cross-sectional profile of the blower units can be changed according to the requirements. For example, it is possible to choose a profile that causes a uniform flow of air within the fan unit. Another advantage of such fan units is the efficiency during operation.
  • the extruded, deep-drawn or cast material at least partially comprises the air duct.
  • the extruded, deep-drawn or cast material comprises the Heilka ⁇ al together with at least one perforated strip, in which at least a part of the openings are introduced.
  • the perforated strip therefore limits parts of the air duct and can likewise consist of extruded, deep-drawn or cast material.
  • the perforated strip may be made of other material and / or manufactured independently and later with the material, which limit other parts of the air duct, are connected.
  • the extruded, deep-drawn or cast material comprises the air duct entirely, whereby the production of a perforated strip is no longer necessary.
  • the openings can then be made for example by introducing holes.
  • the blower unit then consists of a single hollow body.
  • a fan unit containing extruded aluminum.
  • a blower unit may be more stable or lighter with equal weight compared to prior art blower units.
  • the perforated strip in which the openings through which the gaseous medium exits the blower unit, at least partially plastic. It must therefore not be introduced into the air duct, the openings from which the air is directed in the direction of the printing material.
  • Such a perforated strip can be connected in the simplest possible way with the air duct. This can be done by a screw.
  • the fan unit can also have two mutually facing grooves, in which a correspondingly shaped hole bar can be inserted in the axial direction of the air channel.
  • a perforated strip may be an arbitrarily shaped component and may have openings that have different contours.
  • the openings may be circular or oval. However, slots are advantageous. Also, a nozzle-shaped configuration of the openings is conceivable.
  • the feed openings of the blower unit can be connected to a connecting piece, which is separate
  • Component is executed. An according to the profile of the blower unit or the
  • Air duct formed, separate component needs only on the front side of the
  • Connecting piece also has a, preferably circular, nozzle on its side facing away from the fan unit on which the gaseous
  • connection piece comprises a plastic molded part.
  • a plastic molded part can also be produced very inexpensively.
  • a flow-guiding element is arranged inside the air channel in the flow direction of the gaseous medium immediately behind the connecting piece.
  • the invention further comprises a method for producing a blower unit.
  • material is used to make the blower unit whose final shape has been defined in a forming process at at least 100 degrees Celsius.
  • a shaping element for example a casting mold
  • this is a temperature in the range, usually slightly below, the melting temperature
  • a temperature above the melting point is required if a casting method is provided as a forming process
  • Plastics are often referred not to the melting or crystallization temperature, but to the so-called frost line, which indicates a temperature above which the plastic is malleable which process they are reshaped, must be heated at least to 100 degrees Celsius.
  • FIG. 1 section through a blower unit according to the invention in the
  • FIG. 2 shows a view according to H-II in FIG. 1
  • FIG. 3 shows a view according to III-III in FIG. 1
  • FIG. 4 Perspective view of a blower unit according to the invention.
  • FIG. 1 shows a blower unit 1.
  • This blower unit 1 is supplied with a gaseous medium, preferably heated air, via the connecting piece 2 in the transporting direction z. This gaseous medium then exits the blower unit 1 in the direction y through the openings 3.
  • the blower unit 1 consists essentially of four components. In detail, these are the hollow body 4, the connecting piece 2, the end cover 5 and the hole or nozzle bar 6.
  • a flow guide 7 In fixed connection with the connecting piece 2 is a flow guide 7.
  • the connecting piece 2 and the flow guide 7 can be used as a component, advantageously as a plastic molding be executed.
  • the flow guiding element 7 deflects a part of the medium flowing into the blower unit through the connecting piece, so that the flowing medium is also applied to the openings 3 located in the transporting direction z directly behind the connecting piece. Without the flow-guiding element, too little a proportion of the medium would escape through the first openings 3. In the end, the paint applied to the substrate would dry unevenly.
  • the end cover 5 may be formed as a single molded part. In the illustrated embodiment, however, the end cover 5 consists of two molded parts, wherein the molded part 8 is attached from the inside to the end cover 5.
  • the molded part 8 has a pin 9 which extends through a hole in the end cover 5 to the outside.
  • the pin 9 is cylindrical.
  • the pin 9 serves to support the entire blower unit 1 on a base, for example in the machine frame. Pin 9 and the connecting piece 2 are advantageously arranged so that their axes are aligned.
  • the second, provided with the connecting piece 2 end of the blower unit 1 is supported by a to be connected to the connecting piece 2 piece of pipe. Overall, the fan unit can be rotated due to this type of storage, so that the openings 3 can be made easily accessible for cleaning.
  • FIG. 2 shows the section II - II according to FIG. 1.
  • 10 denotes a part of the surface of the hollow body 4.
  • This part 10 has at its edge regions only a very small material thickness, so that the part of the surface 10 can be broken out.
  • the nozzle bar 6 is connected to the hollow body 4.
  • the hollow body 4 grooves or guides 11.
  • the nozzle bar 6 has at its edge regions 12 complementary profiles. For assembly, therefore, the nozzle bar 6 only needs to be inserted from one end face into the grooves or guides 11 of the hollow body 4.
  • FIG. 3 shows the view of an end face of the blower unit 1 according to section III - III in Figure 1. This end face is closed with the end cover 5. This end cover is fixed with screws 13 on the hollow body 4. To recognize is still the pin 9th
  • FIG. 4 shows a perspective view of the blower unit 1, consisting of the hollow body 4, the connecting piece 2 and the nozzle bar. 6

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Drying Of Solid Materials (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Duct Arrangements (AREA)

Abstract

The invention relates to a fan unit (1) for drying a printed material that is provided with ink in a printer. Said fan unit comprises an air channel that runs transversally to the transport direction of the printed material, at least one opening (3), through which a gaseous medium can be conducted from the air channel towards the printed material and a feed opening (2), via which the gaseous medium can be introduced into the air channel. The aim of the invention is to produce a fan unit (1) of this type in a more cost-effective manner. To achieve this, the fan unit contains extruded, deep-drawn or cast material. The invention also relates to a method for producing a fan unit (1).

Description

Gebläseeinheit in einem Trockner für eine Druckmaschine Blower unit in a dryer for a printing machine
Die Erfindung betrifft eine Gebläseeinheit zum Trocknen eines mit Druckfarbe versehenen Bedruckstoffes in einer Druckmaschine gemäß dem Oberbegriff des Anspruchs 1 sowie ein Verfahren zur Herstellung einer Gebläseeinheit gemäß dem Oberbegriff des Anspruchs 12.The invention relates to a blower unit for drying a printing material provided with printing ink in a printing press according to the preamble of claim 1 and to a method for producing a blower unit according to the preamble of claim 12.
Derartige Gebläseeinheiten sind in der Regel Bestandteile von Trocknern, die dazu dienen, frisch bedruckten Bedruckstoff zu trocknen. In der Regel wird dazu der Bedruckstoff mit erwärmter Luft beaufschlagt, so dass das in der noch feuchten Druckfarbe vorliegende Lösungsmittel beschleunigt verdunstet. Eine Druckmaschine ist in der Regel mit einer Mehrzahl solcher Trockner ausgestattet. In Transportrichtung des Bedruckstoffes befindet sich hinter jedem Druckwerk zumindest ein derartiger Trockner.Such blower units are usually components of dryers, which serve to dry freshly printed substrate. As a rule, the printing material is subjected to this with heated air so that the solvent present in the ink, which is still moist, evaporates more rapidly. A printing press is usually equipped with a plurality of such dryers. In the transport direction of the printing material is behind each printing unit at least one such dryer.
Ein solcher Trockner umfasst daher zumindest eine Luftversorgungseinheit, welche erwärmte Luft erzeugt. Selbstverständlich können anstelle der Luft auch andere geeignete Gase verwendet werden. Die erwärmte Luft wird über ein Leituπgs- und gegebenenfalls Verteilungssystem an Gebläseeinheiten weitergeleitet. Diese Gebläseeinheiten dienen dazu, die ihnen zugeleitete Luft gleichmäßig über die gesamte Breite des Bedruckstoffes zu verteilen. Dazu sind die länglich ausgebildeten Gebläseeinheiten in ihrer axialen Richtung im wesentlichen quer zur Transportrichtung des Bedruckstoffes ausgerichtet. Die Gebläseeinheit weist, vorzugsweise an einer ihrer Stirnseiten, eine Zuführöffnung auf, an die die Luft zuführende Leitung angeschlossen werden kann. Die gegenüber liegende Stirnseite der Gebläseeinheit kann verschlossen sein. Der Körper einer solchen Gebläseeinheit umfasst einen Hohlkörper, wobei dieser einen beliebigen Querschnitt aufweisen kann. Oft wird dieser Hohlkörper durch die Außenfläche der Gebläseeinheit begrenzt. Dieser Hohlkörper dient als luftführender Kanal. Entlang der axialen Erstreckung weist die Gebläseeinheit mehrere Öffnungen auf, durch die die Luft auf den Bedruckstoff geleitet wird. Dabei sind die Öffnungen so angebracht, dass die Luft den Bedruckstoff auf kürzestem Wege erreicht. Diese Öffnungen können in Form von Bohrungen in den Hohlkörper eingebracht sein. In der Regel sind dies jedoch in den Hohlkörper eingebrachte Aussparungen, beispielsweise Ausstanzungen.Such a dryer therefore comprises at least one air supply unit which generates heated air. Of course, other suitable gases can be used instead of the air. The heated air is forwarded via a Leituπgs- and optionally distribution system to blower units. These fan units serve to distribute the air supplied to them evenly over the entire width of the printing material. For this purpose, the elongate blower units are aligned in their axial direction substantially transversely to the transport direction of the printing material. The blower unit has, preferably at one of its end faces, a feed opening to which the air-supplying line can be connected. The opposite end face of the blower unit can be closed. The body of such a blower unit comprises a hollow body, wherein this can have any cross-section. Often, this hollow body is limited by the outer surface of the blower unit. This hollow body serves as an air-conducting channel. Along the axial extent, the blower unit has a plurality of openings through which the air is passed onto the printing material. The openings are mounted so that the air reaches the substrate by the shortest route. These openings can be introduced in the form of holes in the hollow body. In general, however, these are introduced into the hollow body recesses, such as punched.
Eine bekannte Gebläseeinheit wird in der Regel aus mehreren Blechen hergestellt. Zur Formung des Hohlkörpers wird ein entsprechendes Blech abgekantet. Die Öffnungen werden in ein zweites, in der Länge im wesentlichen dem ersten Blech entsprechendes Blech eingebracht, welches dann mit dem ersten Blech auf geeignete Weise verbunden wird. Aus Kostengründen ist dies häufig eine Nietverbindung. Die stirnseitigen Abschlüsse werden aus weiteren Blechen gewonnen, wobei diese ebenfalls Abkantungen erhalten, die dann über die Endbereiche des Hohlkörpers gestülpt werden. Die sich überlappenden Bereiche werden dann ebenfalls vernietet.A known fan unit is usually made of several sheets. To shape the hollow body, a corresponding sheet is folded. The openings are introduced into a second, in length substantially corresponding to the first metal sheet, which is then connected to the first plate in a suitable manner. For cost reasons, this is often a riveted joint. The front ends are obtained from other sheets, which also receive folds, which are then slipped over the end portions of the hollow body. The overlapping areas are then also riveted.
Das beschriebene Herstellungsverfahren ist allerdings sehr aufwändig. Daher ist die beschriebene Gebläseeinheit sehr teuer.However, the production method described is very complex. Therefore, the blower unit described is very expensive.
Aufgabe der vorliegenden Erfindung ist es daher, eine Gebläseeinheit und ein Herstellungsverfahren vorzuschlagen, so dass die Gebläseeinheit kostengünstiger hergestellt werden kann.Object of the present invention is therefore to propose a blower unit and a manufacturing method, so that the blower unit can be produced more cheaply.
Die Aufgabe wird durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst. Demnach enthält die Gebläseeinheit stranggepresstes, tiefgezogenes oder gegossenes Material. Auf diese Weise können mehrere Gebläseeinheiten oder Teile davon sehr rationell und damit kostengünstig hergestellt werden. Wird das Material beispielsweise stranggepresst, so können Gebläseeinheiten dadurch hergestellt werden, dass das entsprechend stranggepresste Profil in der für die Gebläseeinheiten benötigten Länge abgelängt wird. Eine weitere Bearbeitung, insbesondere eine mechanische Formgebung, kann damit entfallen. Auch kann das Querschnittsprofil der Gebläseeinheiten den Anforderungen entsprechend verändert werden. So ist es beispielsweise möglich, ein Profil zu wählen, das eine gleichmäßige Strömung der Luft innerhalb der Gebläseeinheit hervorruft. Ein weiterer Vorteil derartiger Gebläseeinheiten liegt in der Effizienz während des Betriebes. Aufgrund der in Gebläseeinheiten des Standes der Technik vorhandenen Niet- oder Schraubverbindungen sind Spalte nicht zu verhindern, durch die gasförmiges Medium entweichen kann. Derartige Undichtigkeiten darstellende Spalte oder Schlitze können in einer erfindungsgemäßen Vorrichtung vermieden werden, so dass bei gleicher Trocknungsleistung ein geringerer Mediendurchsatz nötig ist.The object is solved by the characterizing features of claim 1. Accordingly, the blower unit contains extruded, deep-drawn or cast material. In this way, a plurality of fan units or parts thereof can be produced very efficiently and thus inexpensively. For example, if the material is extruded, blower units may be manufactured by cutting the corresponding extruded profile to the length needed for the blower units. Another Machining, in particular a mechanical shaping, can be dispensed with. Also, the cross-sectional profile of the blower units can be changed according to the requirements. For example, it is possible to choose a profile that causes a uniform flow of air within the fan unit. Another advantage of such fan units is the efficiency during operation. Because of the rivet or screw connections present in blower units of the prior art, gaps can not be prevented through which gaseous medium can escape. Such leaks performing column or slots can be avoided in a device according to the invention, so that a lower media throughput is necessary for the same drying performance.
In einer bevorzugten Ausführungsform der Erfindung umfasst das stranggepresste, tiefgezogene oder gegossene Material zumindest teilweise den Luftkanal. Insbesondere ist es zweckmäßig, wenn das stranggepresste, tiefgezogene oder gegossene Material den Luftkaπal zusammen mit zumindest einer Lochleiste, in welche zumindest ein Teil der Öffnungen eingebracht sind, umfasst. Die Lochleiste begrenzt also Teile des Luftkanals und kann ebenfalls aus stranggepresstem, tiefgezogenem oder gegossenem Material bestehen. Die Lochleiste kann jedoch aus anderem Material bestehen und/oder unabhängig hergestellt und später mit dem Material, welches weitere Teile des Luftkanals begrenzen, verbunden werden.In a preferred embodiment of the invention, the extruded, deep-drawn or cast material at least partially comprises the air duct. In particular, it is expedient if the extruded, deep-drawn or cast material comprises the Luftkaπal together with at least one perforated strip, in which at least a part of the openings are introduced. The perforated strip therefore limits parts of the air duct and can likewise consist of extruded, deep-drawn or cast material. However, the perforated strip may be made of other material and / or manufactured independently and later with the material, which limit other parts of the air duct, are connected.
In einer weiteren vorteilhaften Ausführungsform umfasst das stranggepresste, tiefgezogene oder gegossene Material den Luftkanal gänzlich, wodurch das Herstellen einer Lochleiste nicht mehr notwendig ist. Die Öffnungen können dann beispielsweise durch Einbringen von Bohrungen hergestellt werden. Die Gebläseeinheit besteht dann aus einem einzigen Hohlkörper.In a further advantageous embodiment, the extruded, deep-drawn or cast material comprises the air duct entirely, whereby the production of a perforated strip is no longer necessary. The openings can then be made for example by introducing holes. The blower unit then consists of a single hollow body.
Bevorzugt wird eine Gebläseeinheit, welche stranggepresstes Aluminium enthält. Eine solche Gebläseeinheit kann im Vergleich zu Gebläseeinheiten des Standes der Technik bei gleichem Gewicht stabiler beziehungsweise bei gleicher Stabilität leichter sein. In weiterer Ausgestaltung der Erfindung umfasst die Lochleiste, in welcher die Öffnungen, durch welche das gasförmige Medium aus der Gebläseeinheit austritt, zumindest teilweise Kunststoff. Es müssen also nicht die Öffnungen, aus denen die Luft in Richtung auf den Bedruckstoff geleitet wird, in den Luftkanal eingebracht werden. Eine derartige Lochleiste kann auf möglichst einfache Weise mit dem Luftkanal verbunden werden. Dieses kann durch eine Verschraubung erfolgen. Die Gebläseeinheit kann aber auch zwei zueinander zugewandte Nuten aufweisen, in die eine entsprechend ausgeformte Lochleiste in axialer Richtung des Luftkanals eingeschoben werden kann. Die Verwendung von Verbindungsteilen wie Schrauben oder Nieten entfällt in diesem Fall vollständig, was den Montageaufwand reduziert. Der gegenüber dem Aluminium weichere Kunststoff hat zur Folge, dass sich die Lochleiste in die Nuten der Gebläseeinheit einschieben lässt, ohne dass es zu Verklemmungen kommt. Eine Lochleiste kann ein beliebig geformtes Bauteil sein und kann Öffnungen aufweisen, die verschiedenartige Konturen aufweisen. Die Öffnungen können kreisrund oder oval sein. Vorteilhaft sind jedoch Langlöcher. Auch eine düsenförmige Ausgestaltung der Öffnungen ist denkbar.Preferred is a fan unit containing extruded aluminum. Such a blower unit may be more stable or lighter with equal weight compared to prior art blower units. In a further embodiment of the invention, the perforated strip, in which the openings through which the gaseous medium exits the blower unit, at least partially plastic. It must therefore not be introduced into the air duct, the openings from which the air is directed in the direction of the printing material. Such a perforated strip can be connected in the simplest possible way with the air duct. This can be done by a screw. However, the fan unit can also have two mutually facing grooves, in which a correspondingly shaped hole bar can be inserted in the axial direction of the air channel. The use of connecting parts such as screws or rivets is completely eliminated in this case, which reduces the assembly effort. The softer the plastic compared to the aluminum has the consequence that the perforated strip can be inserted into the grooves of the fan unit, without causing jamming. A perforated strip may be an arbitrarily shaped component and may have openings that have different contours. The openings may be circular or oval. However, slots are advantageous. Also, a nozzle-shaped configuration of the openings is conceivable.
In weiterer vorteilhafter Ausgestaltung der Erfindung sind die Zuführöffnungen der Gebläseeinheit mit einem Anschlussstutzen verbindbar, der als separatesIn a further advantageous embodiment of the invention, the feed openings of the blower unit can be connected to a connecting piece, which is separate
Bauteil ausgeführt ist. Ein entsprechend dem Profil der Gebläseeinheit oder desComponent is executed. An according to the profile of the blower unit or the
Luftkanals ausgeformtes, separates Bauteil braucht nur auf die Stirnseite desAir duct formed, separate component needs only on the front side of the
Profils aufgesteckt und gegebenenfalls mit diesem verschraubt zu werden. DerProfils attached and optionally screwed with this. Of the
Anschlussstutzen weist zudem einen, bevorzugt kreisrunden, Stutzen auf seiner der Gebläseeinheit abgewandten Seite auf, an welchen die das gasförmigeConnecting piece also has a, preferably circular, nozzle on its side facing away from the fan unit on which the gaseous
Medium zuführende Leitungen angeschlossen werden.Medium feeding lines are connected.
Vorteilhaft ist es dabei, wenn der Anschlussstutzen ein Kunststoffformteil umfasst. Ein solches Formteil lässt sich ebenfalls sehr kostengünstig produzieren.It is advantageous if the connection piece comprises a plastic molded part. Such a molded part can also be produced very inexpensively.
In weiterer Ausgestaltung der Erfindung ist im Inneren des Luftkanals in Strömungsrichtung des gasförmigen Mediums unmittelbar hinter dem Anschlussstutzen ein Strömungsleitelement angeordnet. Dieses Strömuπgsleitelement ermöglicht es, das gasförmige Medium innerhalb des Luftkanals in eine gewünschte Richtung zu lenken, beispielsweise in Richtung auf die Öffnungen. So ist es von Gebläseeinheiten des Standes der Technik bekannt, dass durch die ersten Öffnungen der Lochleiste kein oder nur wenig gasförmiges Medium aus dem Luftkanal austritt. Mit dem Strömungsleitelement kann dieser Nachteil vermieden werden und ein Teil des gasförmigen Mediums verstärkt in Richtung auf diese ersten Öffnungen gelenkt werden. Der Volumenstrom kann damit für alle Öffnungen vergleichmäßigt werden.In a further embodiment of the invention, a flow-guiding element is arranged inside the air channel in the flow direction of the gaseous medium immediately behind the connecting piece. This Strömuπgsleitelement makes it possible to direct the gaseous medium within the air duct in a desired direction, for example in the direction of the openings. Thus, it is known from blower units of the prior art that no or only little gaseous medium exits through the first openings of the perforated strip from the air duct. With the flow guide this disadvantage can be avoided and a part of the gaseous medium reinforced in the direction of these first openings are directed. The volume flow can thus be made uniform for all openings.
Besonders vorteilhaft ist es, den Anschlussstutzen und das Strömungsleitelement einstückig auszubilden. Auf diese Weise werden die Montagekosten der Gebläseeinheit trotz des Vorsehens eines Strömungsleitelements zumindest nicht wesentlich erhöht.To form the connecting piece and the flow guide in one piece is particularly advantageous. In this way, the assembly costs of the blower unit are at least not substantially increased despite the provision of a flow guide.
Die Erfindung umfasst weiterhin ein Verfahren zur Herstellung einer Gebläseeinheit. Bei diesem Verfahren wird zur Herstellung der Gebläseeinheit Material verwendet, dessen endgültige Form in einem Umformverfahren bei zumindest 100 Grad Celsius definiert wurde. Unter „Definition einer Form" ist dabei zu verstehen, dass das Material durch ein formgebendes Element, beispielsweise eine Gießform, in seine endgültige Form gebracht wurde. Geeignete Umformverfahren sind beispielsweise das Strangpressen und das Tiefziehen. Das zu formende Material wird dabei mindestens auf die angegebene Temperatur erwärmt, um eine Formgebung zu ermöglichen. Bei Metallen ist dies eine Temperatur im Bereich, zumeist etwas unterhalb, der Schmelztemperatur. Jedoch ist bei Metallen eine Temperatur oberhalb des Schmelzepunktes erforderlich, wenn ein Gießverfahren als Umformverfahren vorgesehen ist. Das erfindungsgemäße Verfahren kann auch zur Umformung von Kunststoffen verwendet werden. Bei Kunststoffen spricht man häufig nicht von der Schmelze- oder Kristallisationstemperatur, sondern von der sogenannten Frostlinie, die eine Temperatur bezeichnet, oberhalb welcher der Kunststoff formbar ist. Allen genannten Materialien ist gemeinsam, dass sie, ganz gleich, mit welchem Verfahren sie umgeformt werden, zumindest auf 100 Grad Celsius erwärmt werden müssen. Weitere Ausführungsbeispiele der Erfindung gehen aus der gegenständlichen Beschreibung und den Ansprüchen hervor. Die einzelnen Figuren zeigen:The invention further comprises a method for producing a blower unit. In this method, material is used to make the blower unit whose final shape has been defined in a forming process at at least 100 degrees Celsius. By "definition of a mold" it is to be understood that the material has been brought into its final shape by a shaping element, for example a casting mold In the case of metals, this is a temperature in the range, usually slightly below, the melting temperature However, for metals, a temperature above the melting point is required if a casting method is provided as a forming process Plastics are often referred not to the melting or crystallization temperature, but to the so-called frost line, which indicates a temperature above which the plastic is malleable which process they are reshaped, must be heated at least to 100 degrees Celsius. Further embodiments of the invention will become apparent from the description and the claims. The individual figures show:
Fig. 1 Schnitt durch eine erfindungsgemäße Gebläseeinheit in derFig. 1 section through a blower unit according to the invention in the
Seitenansicht.Side view.
Fig. 2 Ansicht gemäß H-Il in Fig. 1 Fig. 3 Ansicht gemäß Ill-Ill in Fig. 12 shows a view according to H-II in FIG. 1 FIG. 3 shows a view according to III-III in FIG. 1
Fig. 4 Perspektivische Ansicht einer erfindungsgemäßen Gebläseeinheit.Fig. 4 Perspective view of a blower unit according to the invention.
Fig. 1 zeigt eine Gebläseeinheit 1. Dieser Gebläseeinheit 1 wird ein gasförmiges Medium, vorzugsweise erwärmte Luft, in Transportrichtung z über den Anschlussstutzen 2 zugeführt. Dieses gasförmige Medium tritt anschließend in Richtung y durch die Öffnungen 3 wieder aus der Gebläseeinheit 1 aus. Die Gebläseeinheit 1 besteht im wesentlichen aus vier Bauteilen. Im einzelnen sind dies der Hohlkörper 4, der Anschlussstutzen 2, der Abschlussdeckel 5 und die Loch- oder Düsenleiste 6. In fester Verbindung mit dem Anschlussstutzen 2 steht ein Strömungsleitelement 7. Der Anschlussstutzen 2 und das Strömungsleitelement 7 können als ein Bauteil, vorteilhafterweise als Kunststoffformteil, ausgeführt sein. Das Strömungsleitelement 7 lenkt einen Teil des durch den Aπschlussstutzen in die Gebläseeinheit einströmenden Mediums um, so dass auch die in Transportrichtung z direkt hinter dem Anschlussstutzen liegenden Öffnungen 3 mit dem strömenden Medium beaufschlagt werden. Ohne das Strömungsleitelement würde ein zu geringer Anteil des Mediums durch die ersten Öffnungen 3 austreten. Im Endeffekt würde die auf den Bedruckstoff aufgebrachte Farbe ungleichmäßig trocknen.FIG. 1 shows a blower unit 1. This blower unit 1 is supplied with a gaseous medium, preferably heated air, via the connecting piece 2 in the transporting direction z. This gaseous medium then exits the blower unit 1 in the direction y through the openings 3. The blower unit 1 consists essentially of four components. In detail, these are the hollow body 4, the connecting piece 2, the end cover 5 and the hole or nozzle bar 6. In fixed connection with the connecting piece 2 is a flow guide 7. The connecting piece 2 and the flow guide 7 can be used as a component, advantageously as a plastic molding be executed. The flow guiding element 7 deflects a part of the medium flowing into the blower unit through the connecting piece, so that the flowing medium is also applied to the openings 3 located in the transporting direction z directly behind the connecting piece. Without the flow-guiding element, too little a proportion of the medium would escape through the first openings 3. In the end, the paint applied to the substrate would dry unevenly.
Der Abschlussdeckel 5 kann als ein einzelnes Formteil ausgebildet sein. In der dargestellten Ausführungsform besteht der Abschlussdeckel 5 allerdings aus zwei Formteilen, wobei das Formteil 8 von innen am Abschlussdeckel 5 angebracht ist. Das Formteil 8 weist einen Zapfen 9 auf, der durch eine Bohrung in dem Abschlussdeckel 5 nach außen reicht. Der Zapfen 9 ist zylinderförmig ausgeformt. Der Zapfen 9 dient zur Lagerung der gesamten Gebläseeinheit 1 auf einer Unterlage, beispielsweise in dem Maschinengestell. Zapfen 9 und der Anschlussstutzen 2 sind vorteilhafterweise so angeordnet, dass ihre Achsen fluchten. Das zweite, mit dem Anschlussstutzen 2 versehene Ende der Gebläseeinheit 1 wird von einem an den Anschlussstutzen 2 anzuschließende Rohrstück getragen. Insgesamt kann die Gebläseeinheit aufgrund dieser Art der Lagerung gedreht werden, so dass die Öffnungen 3 zwecks Reinigung auf einfache Weise zugänglich gemacht werden können.The end cover 5 may be formed as a single molded part. In the illustrated embodiment, however, the end cover 5 consists of two molded parts, wherein the molded part 8 is attached from the inside to the end cover 5. The molded part 8 has a pin 9 which extends through a hole in the end cover 5 to the outside. The pin 9 is cylindrical. The pin 9 serves to support the entire blower unit 1 on a base, for example in the machine frame. Pin 9 and the connecting piece 2 are advantageously arranged so that their axes are aligned. The second, provided with the connecting piece 2 end of the blower unit 1 is supported by a to be connected to the connecting piece 2 piece of pipe. Overall, the fan unit can be rotated due to this type of storage, so that the openings 3 can be made easily accessible for cleaning.
Die Figur 2 zeigt den Schnitt Il - Il gemäß Figur 1. In dieser Figur ist mit 10 ein Teil der Oberfläche des Hohlkörpers 4 bezeichnet. Dieser Teil 10 weist an seinen Randbereichen nur eine sehr geringe Materialstärke auf, so dass der Teil der Oberfläche 10 herausgebrochen werden kann. Erst danach wird bei der Herstellung der Gebläseeinheit 1 die Düsenleiste 6 mit dem Hohlkörper 4 verbunden. Zu diesem Zweck weist der Hohlkörper 4 Nuten oder Führungen 11 auf. Die Düsenleiste 6 weist an ihren Randbereichen 12 komplementäre Profile auf. Zur Montage braucht daher die Düsenleiste 6 nur von einer Stirnseite aus in die Nuten oder Führungen 11 des Hohlkörpers 4 eingeschoben zu werden.FIG. 2 shows the section II - II according to FIG. 1. In this figure, 10 denotes a part of the surface of the hollow body 4. This part 10 has at its edge regions only a very small material thickness, so that the part of the surface 10 can be broken out. Only then, in the production of the blower unit 1, the nozzle bar 6 is connected to the hollow body 4. For this purpose, the hollow body 4 grooves or guides 11. The nozzle bar 6 has at its edge regions 12 complementary profiles. For assembly, therefore, the nozzle bar 6 only needs to be inserted from one end face into the grooves or guides 11 of the hollow body 4.
Die Figur 3 zeigt die Sicht auf eine Stirnseite der Gebläseeinheit 1 gemäß Schnitt III - III in Figur 1. Diese Stirnseite ist mit dem Abschlussdeckel 5 verschlossen. Dieser Abschlussdeckel ist mit Schrauben 13 an dem Hohlkörper 4 fixiert. Zu erkennen ist weiterhin der Zapfen 9.3 shows the view of an end face of the blower unit 1 according to section III - III in Figure 1. This end face is closed with the end cover 5. This end cover is fixed with screws 13 on the hollow body 4. To recognize is still the pin 9th
Die Figur 4 zeigt eine perspektivische Ansicht der Gebläseeinheit 1 , bestehend aus dem Hohlkörper 4, dem Anschlussstutzen 2 und der Düsenleiste 6. 4 shows a perspective view of the blower unit 1, consisting of the hollow body 4, the connecting piece 2 and the nozzle bar. 6

Claims

Gebläseeinheit in einem Trockner für eine DruckmaschinePatentansprüche Blower unit in a dryer for a printing press patent claims
1. Gebläseeinheit (1 ) zum Trocknen eines mit Druckfarbe versehenen Bedruck¬ stoffes in einer Druckmaschine, welche folgende Merkmale umfasst: einen quer (z) zur Transportrichtung (x) des Bedruckstoffes verlaufenden Luftkanal,1. blower unit (1) for drying a printing material provided with printing ink in a printing machine, which comprises the following features: a transverse (z) to the transport direction (x) of the printing substrate extending air duct,
- zumindest eine Öffnung (3), durch welche ein gasförmiges Medium aus dem Luftkanal in Richtung (y) auf den Bedruckstoff leitbar ist und eine Zuführöffnung (2), über welche das gasförmige Medium in den Luftka¬ nal einleitbar ist, dadurch gekennzeichnet, dass die Gebläseeinheit stranggepresstes, tiefgezogenes oder gegossenes Material enthält.- At least one opening (3) through which a gaseous medium from the air duct in the direction (y) can be conducted on the substrate and a feed opening (2), via which the gaseous medium in the Luftka¬ nal is introduced, characterized in that the blower unit contains extruded, deep-drawn or cast material.
2. Gebläseeinheit nach Anspruch 1 , dadurch gekennzeichnet, dass das stranggepresste, tiefgezogene oder gegossene Material den Luftkanal zu¬ mindest teilweise umfasst.2. Blower unit according to claim 1, characterized in that the extruded, deep-drawn or cast material comprises the air duct zu¬ least partially.
3. Gebläseeinheit nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass das stranggepresste, tiefgezogene oder gegossene Material den Luftkanal zu¬ sammen mit zumindest einer Lochleiste, in welche zumindest ein Teil der Off- nungen eingebracht sind, umfasst.3. Blower unit according to one of the preceding claims, characterized in that the extruded, deep-drawn or cast material zu¬ the air duct together with at least one perforated strip, in which at least a portion of the Off- are incorporated.
4. Gebläseeinheit nach dem vorstehenden Anspruch, dadurch gekennzeichnet, dass das stranggepresste, tiefgezogene oder gegossene Material den Luftkanal bis auf die Öffnungen gänzlich umfasst.4. Blower unit according to the preceding claim, characterized in that the extruded, deep-drawn or cast material comprises the air duct except for the openings entirely.
5. Gebläseeinheit nach Anspruch 1 , dadurch gekennzeichnet, dass das Material stranggepresstes Aluminium ist.5. Blower unit according to claim 1, characterized in that the material is extruded aluminum.
6. Gebläseeinheit nach den vorstehenden Ansprüchen 3 bis 5, dadurch gekennzeichnet, dass die Lochleiste zumindest teilweise aus Kunststoff besteht.6. Blower unit according to the preceding claims 3 to 5, characterized in that the perforated strip is at least partially made of plastic.
7. Gebläseeinheit nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Zuführöffnungen mit einem Anschlussstutzen (2), der als separates Bauteil ausgeführt ist, verbindbar ist.7. Blower unit according to one of the preceding claims, characterized in that the supply openings with a connecting piece (2), which is designed as a separate component, can be connected.
8. Gebläseeinheit nach dem vorstehenden Anspruch, dadurch gekennzeichnet, dass der Anschlussstutzen (2) ein Kunststoffformteil umfasst.8. fan unit according to the preceding claim, characterized in that the connecting piece (2) comprises a plastic molded part.
9. Gebläseeinheit nach einem der beiden vorstehenden Ansprüche, dadurch gekennzeichnet, dass im Inneren des Luftkanals in Strömungsrichtung des gasförmigen Mediums un¬ mittelbar hinter dem Anschlussstutzen ein Strömungsleitelement angeordnet ist.9. Blower unit according to one of the two preceding claims, characterized in that in the interior of the air duct in the flow direction of the gaseous medium directly behind the connecting piece a flow-guiding element is arranged.
10. Gebläseeinheit nach vorstehendem Anspruch, dadurch gekennzeichnet, dass der Anschlussstutzen und das Strömungsleitelement einstückig ausgebildet sind. 10. Blower unit according to the preceding claim, characterized in that the connecting piece and the flow guide are integrally formed.
11. Gebläseeinheit nach einem der vorstehenden Ansprüche, gekennzeichnet durch einen Abschlussdeckel, der zumindest ein Kunststoffformteil umfasst.11. Blower unit according to one of the preceding claims, characterized by a cover which comprises at least one plastic molded part.
12. Verfahren zur Herstellung einer Gebläseeinheit (1 ) zum Trocknen eines mit Druckfarbe versehenen Bedruckstoffes in einer Druckmaschine, welche folgen¬ de Merkmale umfasst:12. A method for producing a blower unit (1) for drying a printing substrate provided with printing ink in a printing press, which comprises the following features:
- einen quer (z) zur Transportrichtung (x) des Bedruckstoffes verlaufenden Luftkanal,a duct running transversely (z) to the transport direction (x) of the printing substrate,
- zumindest eine Öffnung (3), durch welche ein gasförmiges Medium aus dem Luftkanal in Richtung (y) auf den Bedruckstoff leitbar ist und eine Zuführöffnung (2), über welche das gasförmige Medium in den Luftka¬ nal einleitbar ist, dadurch gekennzeichnet, dass zur Herstellung der Gebläseeinheit Material verwendet wird, dessen endgültige Form in einem Umformverfahren bei zumindest 100 ° Celsius definiert wurde.- At least one opening (3) through which a gaseous medium from the air duct in the direction (y) can be conducted on the substrate and a feed opening (2), via which the gaseous medium in the Luftka¬ nal is introduced, characterized in that for the manufacture of the blower unit material is used whose final shape has been defined in a forming process at least 100 ° Celsius.
13. Verfahren nach dem vorstehenden Anspruch, dadurch gekennzeichnet, dass der Luftkanal der Gebläseeinheit zumindest teilweise durch einen Ziehvorgang gebildet wird. 13. The method according to the preceding claim, characterized in that the air duct of the blower unit is at least partially formed by a pulling operation.
EP05796360A 2004-10-25 2005-10-12 Fan unit in a drier for a printer Active EP1807264B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004051990A DE102004051990B4 (en) 2004-10-25 2004-10-25 Blower unit in a dryer for a printing machine
PCT/EP2005/011013 WO2006045442A1 (en) 2004-10-25 2005-10-12 Fan unit in a drier for a printer

Publications (2)

Publication Number Publication Date
EP1807264A1 true EP1807264A1 (en) 2007-07-18
EP1807264B1 EP1807264B1 (en) 2008-04-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP05796360A Active EP1807264B1 (en) 2004-10-25 2005-10-12 Fan unit in a drier for a printer

Country Status (5)

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EP (1) EP1807264B1 (en)
AT (1) ATE391017T1 (en)
DE (2) DE102004051990B4 (en)
ES (1) ES2302238T3 (en)
WO (1) WO2006045442A1 (en)

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Publication number Priority date Publication date Assignee Title
DE102017122806A1 (en) * 2017-09-29 2019-04-04 Windmöller & Hölscher Kg Apparatus for drying an inked substrate

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Publication number Priority date Publication date Assignee Title
DE4406846C1 (en) * 1994-03-03 1995-05-04 Koenig & Bauer Ag Device for drying printed sheets or webs in printing machines
DE4442940A1 (en) * 1994-12-02 1996-06-05 Hans Georg Dipl Ing Platsch Air blowing strip for printer
DE19701084A1 (en) * 1997-01-15 1998-07-16 Hans Georg Platsch Drying system for printed flat sheets
DE29714455U1 (en) * 1997-08-13 1997-10-09 Roland Man Druckmasch Drying device for substrates in a processing machine
DE29910122U1 (en) * 1999-06-10 1999-09-23 Platsch Hans G Dryer unit
DE10136396A1 (en) * 2001-07-26 2003-02-13 Platsch Gmbh & Co Kg Dryers for printed matter

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Title
See references of WO2006045442A1 *

Also Published As

Publication number Publication date
DE102004051990A1 (en) 2006-05-04
EP1807264B1 (en) 2008-04-02
ATE391017T1 (en) 2008-04-15
DE102004051990B4 (en) 2009-01-02
WO2006045442A1 (en) 2006-05-04
DE502005003590D1 (en) 2008-05-15
ES2302238T3 (en) 2008-07-01

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