EP3411236B1 - Printing press and method for drying a web-like material of a printing press - Google Patents
Printing press and method for drying a web-like material of a printing press Download PDFInfo
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- EP3411236B1 EP3411236B1 EP17702628.3A EP17702628A EP3411236B1 EP 3411236 B1 EP3411236 B1 EP 3411236B1 EP 17702628 A EP17702628 A EP 17702628A EP 3411236 B1 EP3411236 B1 EP 3411236B1
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- European Patent Office
- Prior art keywords
- drying
- drying nozzle
- nozzle
- strip stock
- printing press
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- 238000001035 drying Methods 0.000 title claims description 205
- 238000000034 method Methods 0.000 title claims description 8
- 230000002093 peripheral effect Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 206010013786 Dry skin Diseases 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Classifications
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- 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
Definitions
- the present invention relates to a printing machine comprising an apparatus for drying a strip material with a first drying nozzle and a second drying nozzle, wherein the first drying nozzle and the second drying nozzle are each adapted to apply drying air to the strip material, and wherein the first drying nozzle is formed such in that it applies drying air in a first feed direction to the strip material and discharges it from the strip material in a first discharge direction, and the second drying nozzle is designed such that it applies drying air in a second feed direction to the strip material and removes it from the strip material in a second discharge direction.
- drying nozzles are arranged one behind the other in a housing at more or less large intervals. These blow warm air on the belt material to dry the substances on the material.
- a major disadvantage in the prior art is that the drying length and thus the installation space of drying devices is relatively large. The consequence is a large heat radiation and thus high energy costs.
- a drying device comprising a heatable roller and a blowing device having an outlet opening, the outlet direction is aligned with at least one component of the outlet opening on a lateral surface of the temperature-controlled roller and wherein the outlet direction of the at least one outlet opening a component in a Direction, which is oriented parallel to a tangent to a provided for a printing operation direction of rotation of the next opening area of the outlet area of the lateral surface of the temperature-controlled roller.
- the object is achieved by a printing machine with a first drying nozzle and a second drying nozzle according to claim 1, wherein the first drying nozzle and the second drying nozzle are each adapted to apply drying air to the strip material, and wherein the first drying nozzle is designed such that they Drying air in a first feed direction on the strip material and discharges in a first discharge from the strip material, and the second drying nozzle is adapted such that it applies drying air in a second feed direction on the strip material and dissipates in a second discharge from the strip material, said first discharge direction of the first drying nozzle and the second discharge direction of the second drying nozzle are arranged to extend in a discharge channel between the first drying nozzle and the second drying nozzle.
- the technical advantage is achieved that the first and the second drying nozzle are arranged very compact. This reduces the space of the device and thus the Total drying length. The consequence is of a reduced Heat radiation and thus from reduced energy costs. Another advantage is achieved in that a better adaptation to customer needs can take place.
- the outflow channel is preferably arranged orthogonal to the strip material.
- the outflow channel is formed by housing sections of the first drying nozzle and the second drying nozzle. This additionally favors the controlled discharge of the drying air from the strip material. It would also be conceivable here for the housing sections to be able to absorb part of the heat of the discharged drying air and to supply it to the drying nozzles. This could save additional energy costs.
- the first feed direction and the second feed direction can be arranged orthogonal to each other. This additionally reduces the installation space length of the entire device.
- the first drying nozzle and the second drying nozzle are arranged to apply drying air to a pressure side of the strip material. This ensures optimum drying performance, since the drying air of the first drying nozzle and the second drying nozzle comes into direct contact with the substances located on the strip material.
- the first drying nozzle and the second drying nozzle are associated with a guide roller.
- the guide roll for guiding the strip material is here at a rear side of the strip Band material formed.
- the guide roller supports the strip material only with a wrapping angle of at most 90 degrees, in particular of at most 45 degrees (according to the invention of at most 20 degrees). It is advantageous that the drying air assumes a deviating from a perpendicular loading angle to the strip material. Thus, the drying air can be better derived via the outflow channel. An air turbulence is prevented by this measure, so that ultimately the drying performance can be increased.
- the guide roller is adjustable.
- a geometric intersection of the first feed direction and the second feed direction is arranged on a side facing the rear side of the strip material. This makes it possible to increase the drying area in which drying air from the first drying nozzle and the second drying nozzle impinge on the strip material. As a consequence, the effective exposure time of the drying air to the strip material within the device is prolonged.
- a geometric intersection of the first feed direction and the second feed direction lies on an imaginary line between the axis of rotation and the peripheral surface of the guide roller.
- the geometric intersection point lies on the half of the imaginary line closer to the peripheral surface. This arrangement describes an even stronger inclination, which causes a further increased drying performance.
- the first drying nozzle and the second drying nozzle are adjustable, in particular designed to be pivotable.
- an adjusting device in particular a pivoting device is used.
- the device has a control in order to set the first drying nozzle and the second drying nozzle in a continuous pivoting movement.
- this increases the flexibility of the device and, on the other hand, it can additionally increase the drying performance.
- the embodiment offers the possibility of reducing a temperature load on the strip material at elevated drying air temperatures.
- the apparatus has a plurality of drying nozzles, each applying drying air to the strip material and derived by appropriately trained outflow channels between the drying nozzles. As a result, more than just two drying nozzles per device can be arranged. By deriving the drying air from the strip material between the drying nozzles, all advantages are retained and the drying performance is further increased.
- a drying module according to the printing press according to the invention comprises at least two devices arranged in series according to one of the preceding embodiments.
- Two or more devices arranged in series can be combined into a model.
- In the printing machine can then be provided depending on, for example, the number of printing or inking units, the maximum printing speed, the maximum printing length, the maximum printing width and / or the diameter of the impression cylinder one or more such modules.
- Such a modular design of a drying device allows a series production of individual modules, but still an adjustment of the required dryer performance in the press in question by arranging several modules, as described above.
- the drying module is seen in the transport direction of the strip material - behind the last color or printing unit of the printing press.
- This printing press is preferably a flexographic printing press, in particular a central cylinder flexographic printing press. In the latter case, such a drying device is often referred to as a bridge dryer.
- the FIG. 1 shows a schematic representation of an apparatus 100 for drying a strip material 101.
- the apparatus 100 includes a first drying nozzle 103 and a second drying nozzle 105, each applying drying air to the strip material 101.
- the first drying nozzle 103 applies drying air to the strip material 101 in a first feeding direction 107
- the second drying nozzle 105 applies drying air to the strip material 101 in a second feeding direction 109.
- the discharge of the drying air via an orthogonal to the strip material 101 arranged discharge channel 115, which between the first drying nozzle 103 and the second drying nozzle 105 extends.
- Also arranged orthogonal to each other are the first feed direction 107 and the second feed direction 109.
- a feed angle between the first feed direction 107 and the strip material 101 and between the second feed direction 109 and the strip material 101 is in each case in the range of 35 ° to 55 °, preferably Range of 40 ° to 50 °, in particular at about 45 °. With this feed angle is achieved that the drying air escapes through the discharge channel 115 in an optimal manner.
- the drying air is applied through the first drying nozzle 103 and the second drying nozzle 105 on a pressure side 119 of the strip material 101, while the first drying nozzle 103 and the second drying nozzle 105 are associated with a common guide roller 121.
- the guide roller 121 is arranged to guide the strip material 101 on a back side 123 of the strip material 101. A vertical distance a (see FIG.
- the point of intersection 125 lies on an imaginary line between the axis of rotation 130 and the peripheral surface 131 of the guide roller 121. It is advantageous if the imaginary line can be divided into two equal halves and the intersection point 125 is half, that of the peripheral surface 131 closer lies. This half of the imaginary line 132 is denoted by reference numeral 133 in the FIG. 1 characterized. The division of the imaginary line into two halves is indicated by the line 134.
- the FIG. 2 shows a further schematic illustration of an apparatus 100 for drying a strip material 101.
- the FIG. 2 are exact geometric dimensions, which have been found to be particularly advantageous.
- a vertical distance a between the first drying nozzle 103 and the second drying nozzle 105 and strip material 101 is 3 mm to 20 mm.
- a horizontal distance b between the first drying nozzle 103 and the second drying nozzle 105 is 10 mm to 100 mm
- a distance c between the drying nozzles 103, 105 and the strip material in the respective feeding direction 107, 109 is 5 mm to 50 mm.
- the wrap angle is the angle in the circumferential direction of the guide roller 121 between the point of impact of the strip material on the guide roll and the separation point of the strip material from the guide roll. It should be emphasized that even in the case of a one-dimensional description of the device and the method, the two-dimensional description should also be included throughout the present application. Thus, the strip material is particularly pronounced as a flat path.
- the guide roller 121 has an extension along its axis of rotation, which is preferably at least five times its diameter.
- the drying nozzles 103, 105 extend parallel to the guide roller 121.
- FIG. 3 shows one of the FIG. 1 Similar view of the device 100 for drying the strip material 101.
- this illustration illustrates the adjustment possibilities of the drying nozzles 103 and 105.
- these drying nozzles are adjustable in height, ie their distance is adjustable relative to the guide roller 121.
- a displacement device such as the rails 140 shown, on which associated with the drying nozzles slide in the direction of the double arrow 141 - preferably vertically to the strip material 101 - are displaced.
- the drying nozzles can also be arranged pivotable relative to the guide roller 121.
- An example of a pivoting device is the pivot bearing 142, with which the respective drying nozzle can be pivoted. The displaceability and the pivotability of the drying nozzle can be combined with each other.
- the pivot bearing 142 may be disposed on the above-mentioned carriage.
- FIG. 4 shows a schematic representation of a drying module 200 with three devices arranged in series 100.
- the devices 100 are also shown schematically and are respectively associated with schematically illustrated guide rollers. Under no circumstances, however, is the drying module 200 limited to three in-line devices 100.
- the number of drying nozzles within a device 100 may include two or a plurality of drying nozzles each applying drying air to the strip material 101. The outflow of the drying air is carried out by appropriately trained outflow channels between the drying nozzles.
- FIGS. 5a to 5c show schematic representations of multiple arrangements of drying modules 200. Depending on the number of drying modules 200, which are combined into a multiple arrangement, a corresponding reduction in length can be realized.
- a drying modulus of 1.3 m is the length reduction in FIG. 5a in a multiple arrangement of three drying modules 200 about 50 cm, since the total length can be reduced by the inventive arrangement of the drying nozzles from about 4.5 m to 4 m.
- the length reduction in a multiple arrangement of four drying modules 200 is about 70 cm, since the total length can be reduced by the inventive arrangement of the drying nozzles from about 6 m to 5.3 m.
- the length reduction in a multiple arrangement of five drying modules 200 is about 140 cm, since the total length can be reduced by the inventive arrangement of the drying nozzles from about 8 m to 6.6 m.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drying Of Solid Materials (AREA)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
Description
Die vorliegende Erfindung betrifft eine Druckmaschine umfassend eine Vorrichtung zum Trocknen eines Bandmaterials mit einer ersten Trocknungsdüse und einer zweiten Trocknungsdüse, wobei die erste Trocknungsdüse und die zweite Trocknungsdüse jeweils dazu ausgebildet sind, Trocknungsluft auf das Bandmaterial aufzubringen, und wobei die erste Trocknungsdüse derart ausgebildet ist, dass sie Trocknungsluft in einer ersten Zuführrichtung auf das Bandmaterial aufbringt und in einer ersten Abführrichtung von dem Bandmaterial abführt, und die zweite Trocknungsdüse derart ausgebildet ist, dass sie Trocknungsluft in einer zweiten Zuführrichtung auf das Bandmaterial aufbringt und in einer zweiten Abführrichtung von dem Bandmaterial abführt.The present invention relates to a printing machine comprising an apparatus for drying a strip material with a first drying nozzle and a second drying nozzle, wherein the first drying nozzle and the second drying nozzle are each adapted to apply drying air to the strip material, and wherein the first drying nozzle is formed such in that it applies drying air in a first feed direction to the strip material and discharges it from the strip material in a first discharge direction, and the second drying nozzle is designed such that it applies drying air in a second feed direction to the strip material and removes it from the strip material in a second discharge direction.
Zum Trocknen von Bandmaterialien in Druckmaschinen werden in einem Gehäuse, in mehr oder weniger großen Abständen, Trocknungsdüsen hintereinander angeordnet. Diese blasen warme Luft auf das Bandmaterial, um die auf dem Material befindlichen Substanzen zu trocknen.For drying strip materials in printing machines, drying nozzles are arranged one behind the other in a housing at more or less large intervals. These blow warm air on the belt material to dry the substances on the material.
Ein großer Nachteil im Stand der Technik ist, dass die Trocknungslänge und damit der Bauraum von Trocknungsvorrichtungen verhältnismäßig groß ist. In der Konsequenz ist von einer großen Wärmeabstrahlung und damit von hohen Energiekosten auszugehen.A major disadvantage in the prior art is that the drying length and thus the installation space of drying devices is relatively large. The consequence is a large heat radiation and thus high energy costs.
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Es ist die Aufgabe der vorliegenden Erfindung die aus dem Stand der Technik bekannten Nachteile zu überwinden und eine Druckmaschine und ein Verfahren zum Trocknen eines Bandmaterials bereitzustellen, welche eine kurze Trocknungslänge und eine damit verbundene Bauraumverringerung sowie eine Reduzierung der Energiekosten ermöglichen.It is the object of the present invention to overcome the drawbacks known from the prior art and to provide a printing machine and a method for drying a strip material, which allow a short drying length and an associated space reduction and a reduction of energy costs.
Erfindungsgemäß wird die Aufgabe durch eine Druckmaschine mit einer ersten Trocknungsdüse und einer zweiten Trocknungsdüse nach Anspruch 1 gelöst, wobei die erste Trocknungsdüse und die zweite Trocknungsdüse jeweils dazu ausgebildet sind, Trocknungsluft auf das Bandmaterial aufzubringen, und wobei die erste Trocknungsdüse derart ausgebildet ist, dass sie Trocknungsluft in einer ersten Zuführrichtung auf das Bandmaterial aufbringt und in einer ersten Abführrichtung von dem Bandmaterial abführt, und die zweite Trocknungsdüse derart ausgebildet ist, dass sie Trocknungsluft in einer zweiten Zuführrichtung auf das Bandmaterial aufbringt und in einer zweiten Abführrichtung von dem Bandmaterial abführt, wobei die erste Abführrichtung der ersten Trocknungsdüse und die zweite Abführrichtung der zweiten Trocknungsdüse in einem Abströmkanal zwischen der ersten Trocknungsdüse und der zweiten Trocknungsdüse verlaufend angeordnet sind. Dadurch wird der technische Vorteil erreicht, dass die erste und die zweite Trocknungsdüse sehr kompakt angeordnet werden. Dies reduziert den Bauraum der Vorrichtung und damit die Trocknungslänge insgesamt. In der Konsequenz ist von einer reduzierten Wärmeabstrahlung und damit von reduzierten Energiekosten auszugehen. Ein weiterer Vorteil wird dadurch erreicht, dass eine bessere Anpassung an Kundenbedürfnisse erfolgen kann.According to the invention, the object is achieved by a printing machine with a first drying nozzle and a second drying nozzle according to claim 1, wherein the first drying nozzle and the second drying nozzle are each adapted to apply drying air to the strip material, and wherein the first drying nozzle is designed such that they Drying air in a first feed direction on the strip material and discharges in a first discharge from the strip material, and the second drying nozzle is adapted such that it applies drying air in a second feed direction on the strip material and dissipates in a second discharge from the strip material, said first discharge direction of the first drying nozzle and the second discharge direction of the second drying nozzle are arranged to extend in a discharge channel between the first drying nozzle and the second drying nozzle. As a result, the technical advantage is achieved that the first and the second drying nozzle are arranged very compact. This reduces the space of the device and thus the Total drying length. The consequence is of a reduced Heat radiation and thus from reduced energy costs. Another advantage is achieved in that a better adaptation to customer needs can take place.
Um die Ableitung der Trocknungsluft möglichst kontrolliert und einfach zu realisieren, ist der Abströmkanal vorzugsweise orthogonal zu dem Bandmaterial angeordnet.In order to realize the discharge of the drying air as controlled and easy as possible, the outflow channel is preferably arranged orthogonal to the strip material.
Dadurch können unnötige Luftverwirbelungen verhindert werden und die Trocknungsleistung wird dadurch erhöht.As a result, unnecessary air turbulence can be prevented and the drying performance is thereby increased.
Erfindungsgemäß ist der Abströmkanal durch Gehäuseabschnitte der ersten Trocknungsdüse und der zweiten Trocknungsdüse ausgebildet. Dies begünstigt zusätzlich das kontrollierte Abführen der Trocknungsluft von dem Bandmaterial. Denkbar wäre es hierbei ebenso, dass die Gehäuseabschnitte einen Teil der Wärme der abgeführten Trocknungsluft aufnehmen und den Trocknungsdüsen zuführen können. Dadurch könnte man zusätzliche Energiekosten einsparen.According to the invention, the outflow channel is formed by housing sections of the first drying nozzle and the second drying nozzle. This additionally favors the controlled discharge of the drying air from the strip material. It would also be conceivable here for the housing sections to be able to absorb part of the heat of the discharged drying air and to supply it to the drying nozzles. This could save additional energy costs.
Um die Trocknungsleistung der Vorrichtung zu maximieren und um eine möglichst kompakte Vorrichtung zu ermöglichen, können die erste Zuführrichtung und die zweite Zuführrichtung orthogonal zueinander angeordnet werden. Dies reduziert zusätzlich die Bauraumlänge der gesamten Vorrichtung.In order to maximize the drying performance of the device and to allow the most compact possible device, the first feed direction and the second feed direction can be arranged orthogonal to each other. This additionally reduces the installation space length of the entire device.
Gemäß einer weiteren bevorzugten Ausführungsform, sind die erste Trocknungsdüse und die zweite Trocknungsdüse angeordnet, um Trocknungsluft auf eine Druckseite des Bandmaterials aufzubringen. Dies sorgt für eine optimale Trocknungsleistung, da die Trocknungsluft der ersten Trocknungsdüse und der zweiten Trocknungsdüse unmittelbar mit den auf dem Bandmaterial befindlichen Substanzen in Kontakt gerät.According to a further preferred embodiment, the first drying nozzle and the second drying nozzle are arranged to apply drying air to a pressure side of the strip material. This ensures optimum drying performance, since the drying air of the first drying nozzle and the second drying nozzle comes into direct contact with the substances located on the strip material.
Um die Ausrichtung des Bandmaterials zu ermöglichen bzw. um einen optimalen Winkel der Trocknungsluft aus der ersten Trocknungsdüse und der zweiten Trocknungsdüse zu gewährleisten, sind die erste Trocknungsdüse und die zweite Trocknungsdüse einer Leitwalze zugeordnet. Erfindungsgemäß ist die Leitwalze zum Führen des Bandmaterials hierbei an einer Rückseite des Bandmaterials ausgebildet. Somit sind die Ausrichtung des Bandmaterials und damit eine verbesserte Trocknung der Substanzen auf dem Bandmaterial realisierbar.In order to enable the orientation of the strip material or to ensure an optimum angle of the drying air from the first drying nozzle and the second drying nozzle, the first drying nozzle and the second drying nozzle are associated with a guide roller. In accordance with the invention, the guide roll for guiding the strip material is here at a rear side of the strip Band material formed. Thus, the orientation of the strip material and thus an improved drying of the substances on the strip material can be realized.
Vorteilhaft ist es, wenn die Leitwalze das Bandmaterial lediglich mit einem Umschlingungswinkel von höchstens 90 Grad, insbesondere von höchstens 45 Grad (erfindungsgemäß von höchstens 20 Grad) unterstützt. Vorteilhaft ist dabei, dass die Trocknungsluft einen von einer senkrechten Beaufschlagung abweichenden Winkel zum Bandmaterial einnimmt. Somit kann die Trocknungsluft besser über den Abströmkanal ableiten. Eine Luftverwirbelung wird mit dieser Maßnahme verhindert, so dass letztlich die Trocknungsleistung erhöht werden kann.It is advantageous if the guide roller supports the strip material only with a wrapping angle of at most 90 degrees, in particular of at most 45 degrees (according to the invention of at most 20 degrees). It is advantageous that the drying air assumes a deviating from a perpendicular loading angle to the strip material. Thus, the drying air can be better derived via the outflow channel. An air turbulence is prevented by this measure, so that ultimately the drying performance can be increased.
Gemäß einer weiteren Ausführungsform ist die Leitwalze verstellbar ausgebildet. Somit ist es möglich, einen Abstand zwischen dem Bandmaterial und den Trocknungsdüsen der ersten Trocknungsdüse und der zweiten Trocknungsdüse zu variieren. Dies kann auch während des Betriebs der Trocknungsvorrichtung bzw. der gesamten Druckmaschine erfolgen, ohne hierbei den Betrieb unterbrechen müssen.According to a further embodiment, the guide roller is adjustable. Thus, it is possible to vary a distance between the strip material and the drying nozzles of the first drying nozzle and the second drying nozzle. This can also be done during operation of the drying device or the entire printing press, without interrupting the operation.
Zur Maximierung der Trocknungsleistung ist ein geometrischer Schnittpunkt der ersten Zuführrichtung und der zweiten Zuführrichtung auf einer der Rückseite des Bandmaterials zugewandten Seite angeordnet. Dadurch ist es möglich den Trocknungsbereich, in welchem Trocknungsluft aus der ersten Trocknungsdüse und der zweiten Trocknungsdüse auf das Bandmaterial auftrifft, zu vergrößern. In der Konsequenz verlängert sich somit die effektive Einwirkungszeit der Trocknungsluft auf das Bandmaterial innerhalb der Vorrichtung.In order to maximize the drying performance, a geometric intersection of the first feed direction and the second feed direction is arranged on a side facing the rear side of the strip material. This makes it possible to increase the drying area in which drying air from the first drying nozzle and the second drying nozzle impinge on the strip material. As a consequence, the effective exposure time of the drying air to the strip material within the device is prolonged.
In einer weiteren Ausgestaltung der Erfindung ist vorgesehen, dass ein geometrischer Schnittpunkt der ersten Zuführrichtung und der zweiten Zuführrichtung auf einer gedachten Linie zwischen der Drehachse und der Umfangsfläche der Leitwalze liegt. Das bedeutet also, dass die Zuführrichtungen nicht nur nicht orthogonal zur Leitwalze, sondern auch nicht orthogonal zum Bandmaterial liegen. Dies begünstigt wiederum das Abströmen der Trocknungsluft und damit die Trocknungsleistung.In a further embodiment of the invention, it is provided that a geometric intersection of the first feed direction and the second feed direction lies on an imaginary line between the axis of rotation and the peripheral surface of the guide roller. This means that the feed directions are not only not orthogonal to the guide roll, but also not orthogonal to the strip material. This in turn favors the outflow of drying air and thus the drying performance.
In weiterer Ausgestaltung kann sogar vorgesehen sein, dass der geometrische Schnittpunkt auf der der Umfangsfläche näher liegenden Hälfte der gedachten Linie liegt. Diese Anordnung beschreibt eine noch stärkere Schrägstellung, was eine nochmals erhöhte Trocknungsleistung hervorruft.In a further embodiment, it may even be provided that the geometric intersection point lies on the half of the imaginary line closer to the peripheral surface. This arrangement describes an even stronger inclination, which causes a further increased drying performance.
Um eine flexible Anpassung der Vorrichtung an das Bandmaterial oder an die auf das Bandmaterial aufgebrachten Substanzen zu realisieren, sind die erste Trocknungsdüse und die zweite Trocknungsdüse verstellbar, insbesondere schwenkbar ausgebildet. Hierzu dient eine Verstelleinrichtung, insbesondere eine Schwenkeinrichtung.In order to realize a flexible adaptation of the device to the strip material or to the substances applied to the strip material, the first drying nozzle and the second drying nozzle are adjustable, in particular designed to be pivotable. For this purpose, an adjusting device, in particular a pivoting device is used.
Gemäß einer besonders vorteilhaften Ausführungsform, weist die Vorrichtung eine Steuerung auf, um die erste Trocknungsdüse und die zweite Trocknungsdüse in eine kontinuierliche Schwenkbewegung zu versetzen. Die erhöht einerseits die Flexibilität der Vorrichtung und andererseits kann dadurch die Trocknungsleistung zusätzlich erhöht werden. Insbesondere bietet die Ausführungsform die Möglichkeit, bei erhöhten Trocknungslufttemperaturen eine Temperaturbelastung für das Bandmaterial zu reduzieren.According to a particularly advantageous embodiment, the device has a control in order to set the first drying nozzle and the second drying nozzle in a continuous pivoting movement. On the one hand, this increases the flexibility of the device and, on the other hand, it can additionally increase the drying performance. In particular, the embodiment offers the possibility of reducing a temperature load on the strip material at elevated drying air temperatures.
Um die Trocknungsleistung weiter zu erhöhen, weist die Vorrichtung eine Vielzahl von Trocknungsdüsen auf, die jeweils Trocknungsluft auf das Bandmaterial aufbringen und durch entsprechend ausgebildete Abströmkanäle zwischen den Trocknungsdüsen ableiten. Dadurch können auch mehr als nur zwei Trocknungsdüsen pro Vorrichtung angeordnet werden. Durch Ableiten der Trocknungsluft von dem Bandmaterial zwischen den Trocknungsdüsen, bleiben sämtliche Vorteile erhalten und die Trocknungsleistung wird weiter erhöht.In order to further increase the drying performance, the apparatus has a plurality of drying nozzles, each applying drying air to the strip material and derived by appropriately trained outflow channels between the drying nozzles. As a result, more than just two drying nozzles per device can be arranged. By deriving the drying air from the strip material between the drying nozzles, all advantages are retained and the drying performance is further increased.
Ferner umfasst ein Trocknungsmodul gemäß der erfindungsgemäßen Druckmaschine zumindest zwei in Reihe angeordnete Vorrichtungen gemäß einem der vorangehenden Ausführungsformen. Dadurch wird beispielsweise ein vereinfachter oder reduzierter Wartungsaufwand möglich, da im Bedarfsfall ganze Trocknungsmodule ausgetauscht werden können. Es können zwei oder mehr in Reihe angeordnete Vorrichtungen zu einem Model zusammengefasst werden. In der Druckmaschine können dann in Abhängigkeit beispielsweise von der Anzahl der Druck- oder Farbwerke, der maximalen Druckgeschwindigkeit, der maximalen Drucklänge, der maximalen Druckbreite und/oder des Durchmessers des Gegendruckzylinders ein oder mehrere derartige Module vorgesehen sein. Eine derartige Modulbauweise einer Trocknungseinrichtung ermöglicht eine Serienproduktion einzelner Module, aber dennoch eine Anpassung der nötigen Trocknerleistung in der betreffenden Druckmaschine durch das Anordnen mehrerer Module, wie sie oben beschrieben wurden.Furthermore, a drying module according to the printing press according to the invention comprises at least two devices arranged in series according to one of the preceding embodiments. As a result, for example, a simplified or reduced maintenance is possible since if necessary, entire drying modules can be replaced. Two or more devices arranged in series can be combined into a model. In the printing machine can then be provided depending on, for example, the number of printing or inking units, the maximum printing speed, the maximum printing length, the maximum printing width and / or the diameter of the impression cylinder one or more such modules. Such a modular design of a drying device allows a series production of individual modules, but still an adjustment of the required dryer performance in the press in question by arranging several modules, as described above.
Erfindungsgemäß ist das Trocknungsmodul in Transportrichtung des Bandmaterials gesehen - hinter dem letzten Farb- oder Druckwerk der Druckmaschine angeordnet. Bevorzugt handelt es sich bei dieser Druckmaschine um eine Flexodruckmaschine, insbesondere um eine Zentralzylinderflexodruckmaschine. Im letzten Fall wird eine solche Trocknungseinrichtung auch oft als Brückentrockner bezeichnet.According to the invention, the drying module is seen in the transport direction of the strip material - behind the last color or printing unit of the printing press. This printing press is preferably a flexographic printing press, in particular a central cylinder flexographic printing press. In the latter case, such a drying device is often referred to as a bridge dryer.
Die oben angegebene Aufgabe wird auch durch ein Verfahren zum Trocknen eines Bandmaterials einer Druckmaschine gemäß dem Anspruch 12 gelöst.The object stated above is also achieved by a method for drying a strip material of a printing press according to claim 12.
Mit diesem Verfahren werden dieselben Vorteile erreicht wie mit einer erfindungsgemäßen Druckmaschine.With this method, the same advantages are achieved as with a printing press according to the invention.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung gehen aus der nachfolgenden Beschreibung hervor, in der unter Bezugnahme auf die Figuren verschiedene Ausführungsbeispiele im Einzelnen erläutert sind. Dabei können die in den Ansprüchen und in der Beschreibung erwähnten Merkmale jeweils einzeln für sich oder beliebige Kombinationen erwähnter Merkmale erfindungswesentlich sein. Im Rahmen der gesamten Offenbarung gelten Merkmale und Einzelheiten, die im Zusammenhang mit dem erfindungsgemäßen Verfahren beschrieben sind, selbstverständlich auch im Zusammenhang mit der erfindungsgemäßen Druckmaschine und jeweils umgekehrt, so dass bezüglich der Offenbarung zu den einzelnen Aspekten der Erfindung stets wechselseitig Bezug genommen wird beziehungsweise werden kann. Es zeigen:
- Fig. 1
- eine schematische Darstellung einer Vorrichtung zum Trocknen eines Bandmaterials einer erfindungsgemäßen Druckmaschine
- Fig. 2
- eine weitere schematische Darstellung dieser Vorrichtung zum Trocknen eines Bandmaterials,
- Fig. 3
- eine weitere schematische Darstellung der Trocknungsvorrichtung
- Fig. 4
- eine schematische Darstellung eines Trocknungsmoduls, und
- Fig. 5a-c
- schematische Darstellungen von Mehrfachanordnungen von Trocknungsmodulen.
- Fig. 1
- a schematic representation of an apparatus for drying a strip material of a printing machine according to the invention
- Fig. 2
- a further schematic representation of this device for drying a strip material,
- Fig. 3
- a further schematic representation of the drying device
- Fig. 4
- a schematic representation of a drying module, and
- Fig. 5a-c
- schematic representations of multiple arrangements of drying modules.
Die
Der Schnittpunkt 125 liegt dabei auf einer gedachten Linie zwischen der Drehachse 130 und der Umfangsfläche 131 der Leitwalze 121. Vorteilhaft ist dabei, wenn sich die gedachte Linie in zwei gleiche Hälften teilen lässt und der Schnittpunkt 125 auf der Hälfte liegt, die der Umfangsfläche 131 näher liegt. Diese Hälfte der gedachten Linie 132 ist mit dem Bezugszeichen 133 in der
Die
Die
Die
Die
Alle in Verbindung mit einzelnen Ausführungsformen der Erfindung erläuterten und gezeigten Merkmale können in unterschiedlicher Kombination in dem erfindungsgemäßen Gegenstand vorgesehen sein, um gleichzeitig deren vorteilhafte Wirkungen zu realisieren.All features explained and shown in connection with individual embodiments of the invention may be used in different combinations in the be provided subject matter according to the invention in order to realize their beneficial effects simultaneously.
- 100100
- Vorrichtungdevice
- 101101
- Bandmaterialband material
- 103103
- Erste TrocknungsdüseFirst drying nozzle
- 105105
- Zweite TrocknungsdüseSecond drying nozzle
- 107107
- Erste ZuführrichtungFirst feeding direction
- 109109
- Zweite ZuführrichtungSecond feed direction
- 111111
- Erste AbführrichtungFirst discharge direction
- 113113
- Zweite AbführrichtungSecond discharge direction
- 115115
- Abströmkanaloutflow channel
- 117117
- Gehäuseabschnittehousing sections
- 119119
- Druckseite des BandmaterialsPrint side of the strip material
- 121121
- Leitwalzeguide roll
- 123123
- Rückseite des BandmaterialsBack of the band material
- 125125
- Schnittpunktintersection
- 130130
-
Drehachse der Leitwalze 121Rotary axis of the
guide roller 121 - 131131
-
Umfangsfläche der Leitwalze 121Peripheral surface of the
guide roller 121 - 132132
-
gedachte Linie zwischen Drehachse 130 und Umfangsfläche 131imaginary line between the
rotation axis 130 andcircumferential surface 131 - 133133
-
Hälfte der gedachten Linie 132Half of the
imaginary line 132 - 134134
-
Teilung der gedachten Linie 132 in zwei Hälften.Division of the
imaginary line 132 in two halves. - 140140
- Schienerail
- 141141
- Doppelpfeildouble arrow
- 142142
- Drehlagerpivot bearing
- 200200
- Trocknungsmoduldrying module
- αα
- Umschlingungswinkel des Bandmaterials um die LeitwalzeWrap angle of the strip material around the guide roll
- aa
- Vertikaler Abstand zwischen Trocknungsdüse und BandmaterialVertical distance between drying nozzle and strip material
- bb
- Horizontaler Abstand zwischen erster und zweiter TrocknungsdüseHorizontal distance between first and second drying nozzle
- cc
- Abstand zwischen Trocknungsdüse und Bandmaterial in ZuführrichtungDistance between drying nozzle and strip material in the feed direction
- dd
- Abstand zwischen zwei VorrichtungenDistance between two devices
- mm
- TrocknungsmodulmaßTrocknungsmodulmaß
Claims (12)
- A printing press, in particular flexographic printing press, with a drying module (200), which is arranged behind the last inking- or printing unit, comprising at least two devices (100) connected in series for drying a strip stock (101), wherein each of the devices (100) comprises a first drying nozzle (103) and a second drying nozzle (105), wherein the first drying nozzle (103) and the second drying nozzle (105), are each designed to apply drying air to the strip stock (101), and wherein the first drying nozzle (103) is designed in such a manner that it applies drying air to the strip stock (101) in a first feed direction (107) and discharges drying air from the strip stock (101) in a first discharge direction (111), and the second drying nozzle (105) is designed in such a manner that it applies drying air to the strip stock (101) in a second feed direction (109) and discharges it from the strip stock (101) in a second discharge direction (113),
wherein
the first discharge direction (111) of the first drying nozzle (103) and the second discharge direction (113) of the second drying nozzle (105) are arranged in an outflow channel (115) extending between the first drying nozzle (103) and the second drying nozzle (105),
wherein the outflow channel (115) is formed by housing sections (117) of the first drying nozzle (103) and the second drying nozzle (105), characterized in that the first drying nozzle (103) and the second drying nozzle (105) are assigned to a single guide roller (121), wherein the guide roller (121) is designed to guide the strip stock (101) from a rear side (123), wherein the guide roller (121) supports the strip stock (101) at an angle of contact (α) of at most 20 degrees. - The printing press according to Claim 1, characterized in that the outflow channel (115) is arranged orthogonally to the strip stock (101).
- The printing press according to any one of the preceding claims, characterized in that the first feed direction (107) and the second feed direction (109) are arranged orthogonally to one another.
- The printing press according to any one of the preceding claims, characterized in that the first drying nozzle (103) and the second drying nozzle (105) are arranged in order to apply drying air to a printing side (119) of the strip stock (101).
- The printing press according to any one of the preceding claims, characterized in that the guide roller (121) is designed to be adjustable.
- The printing press according to any one of the preceding claims, characterized in that a geometrical point of intersection (125) of the first feed direction (107) and the second feed direction (109) is arranged on a side facing the rear side (123) of the strip stock (101).
- The printing press according to any one of the preceding claims, characterized in that a geometrical point of intersection (125) of the first feed direction (107) and the second feed direction (109) lies on an imaginary line (132) between the axis of rotation (13) and the circumferential surface (131) of the guide roller (121).
- The printing press according to any one of the preceding claims, characterized in that the geometrical point of intersection (125) lies on the half of the imaginary line (132) which lies closer to the circumferential surface (131) of the guide roller (121).
- The printing press according to any one of the preceding claims, characterized in that the first drying nozzle (103) and the second drying nozzle (105) are designed to be adjustable.
- The printing press according to any one of the preceding claims, characterized in that the device (100) has a control, in order to set the first drying nozzle (103) and the second drying nozzle (105) into a continuous pivoting movement.
- The printing press according to any one of the preceding claims, characterized in that the device (100) has a plurality of drying nozzles (103, 105), which in each case apply drying air to the strip stock (101) and discharge said drying air through appropriately designed outflow channels (115) between the drying nozzles (103,105).
- A method for drying a strip stock (101) of a printing press with a drying module (200), which is arranged behind the last inking- or printing unit, comprising at least two devices (100) connected in series for drying a strip stock, wherein in the method in each case drying air is applied to the strip stock (101) with a first drying nozzle (103) and with a second drying nozzle (105), wherein with the first drying nozzle (103) drying air is applied to the stock material (101) in a first feed direction (107) and is discharged from the strip stock (101) in a first discharge direction (111), and with the second drying nozzle (105) the drying air is applied to the strip stock (101) in a second feed direction (109) and is discharged from the strip stock (101) in a second discharge direction (113),
wherein
the drying air of the first discharge direction (111) of the first drying nozzle (103) and the drying air of the second discharge direction (113) of the second drying nozzle (105) is discharged in an outflow channel (115) between the first drying nozzle 103) and the second drying nozzle (105),
wherein the outflow channel (115) is formed by housing sections (117) of the first drying nozzle (103) and of the second drying nozzle 105), characterized in that the first drying nozzle 103) and the second drying nozzle (105) are assigned to a single guide roller (121), wherein the guide roller (121) guides the strip stock (101) from a rear side (123), wherein the guide roller (121) supports the strip stock 101) at an angle of contact (α) of at most 20 degrees.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016201480.3A DE102016201480B4 (en) | 2016-02-01 | 2016-02-01 | Apparatus and method for drying a strip material of a printing machine |
PCT/EP2017/052165 WO2017134114A1 (en) | 2016-02-01 | 2017-02-01 | Device and method for drying a strip stock of a printing press |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3411236A1 EP3411236A1 (en) | 2018-12-12 |
EP3411236B1 true EP3411236B1 (en) | 2019-12-11 |
Family
ID=57956304
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17702628.3A Active EP3411236B1 (en) | 2016-02-01 | 2017-02-01 | Printing press and method for drying a web-like material of a printing press |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3411236B1 (en) |
DE (1) | DE102016201480B4 (en) |
ES (1) | ES2769293T3 (en) |
WO (1) | WO2017134114A1 (en) |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB895655A (en) * | 1958-11-04 | 1962-05-02 | Halley & Sons Ltd James | Improved apparatus for drying printed webs of material |
DE1124972B (en) | 1959-05-21 | 1962-03-08 | Hesser Ag Maschf | Device for drying printed running webs made of paper or similar materials |
CH377853A (en) | 1959-11-14 | 1964-05-31 | Winkler Fallert & Co Maschf | Method and device for drying moving paper webs, in particular gravure paper webs |
US3873013A (en) * | 1973-10-04 | 1975-03-25 | Tec Systems | High velocity web floating air bar having center exhaust means |
IT1153853B (en) * | 1982-09-22 | 1987-01-21 | Cerutti Spa Off Mec | VENTILATION DEVICE FOR PRINTING MACHINES, IN PARTICULAR FOR ROTOCALCO ROTARY MACHINES |
US6293196B1 (en) * | 1993-10-06 | 2001-09-25 | Howard W. DeMoore | High velocity, hot air dryer and extractor |
CA2156005A1 (en) * | 1994-08-16 | 1996-02-17 | John W. Bird | Multiple color offset press utilizing aqueous ink and waterless printing plates with interstation drying and extraction |
DE102007042716A1 (en) * | 2006-10-04 | 2008-04-10 | Heidelberger Druckmaschinen Ag | Print substrate drying device for printing machine, has blowing nozzles integrated into heat exchanger that has air line pipes, which are connected with one another by transverse fin, and hot-air dryer comprising suction openings |
DE102007035989A1 (en) | 2007-08-01 | 2009-02-05 | Eastman Kodak Co. | System for drying print medium on printing material has arrangement for applying pulsating gas flow arranged so gas guide channels are mutually adjacent in direction transverse to transport direction |
DE102009033492A1 (en) | 2009-07-15 | 2011-01-20 | Deutsche Mechatronics Gmbh | Device for drying e.g. web by convection in e.g. sheet-fed offset printing machine, has functional section turned towards upper surface of dry material, supply point formed as round nozzle, and suction point formed at round nozzle |
DE102012220431B4 (en) | 2012-11-09 | 2022-12-01 | Koenig & Bauer Ag | Method for drying a printing material using a drying device of a printing machine |
DE102013101350B4 (en) | 2013-02-12 | 2018-11-08 | Windmöller & Hölscher Kg | Drying device, system with a drying device and method for operating a drying device for the intermediate inking unit drying of a printing machine |
-
2016
- 2016-02-01 DE DE102016201480.3A patent/DE102016201480B4/en active Active
-
2017
- 2017-02-01 ES ES17702628T patent/ES2769293T3/en active Active
- 2017-02-01 WO PCT/EP2017/052165 patent/WO2017134114A1/en active Application Filing
- 2017-02-01 EP EP17702628.3A patent/EP3411236B1/en active Active
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
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DE102016201480A1 (en) | 2017-08-03 |
ES2769293T3 (en) | 2020-06-25 |
EP3411236A1 (en) | 2018-12-12 |
WO2017134114A1 (en) | 2017-08-10 |
DE102016201480B4 (en) | 2019-07-11 |
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