EP3590716A1 - Sheet fed printing machine with a humidifier - Google Patents
Sheet fed printing machine with a humidifier Download PDFInfo
- Publication number
- EP3590716A1 EP3590716A1 EP19179627.5A EP19179627A EP3590716A1 EP 3590716 A1 EP3590716 A1 EP 3590716A1 EP 19179627 A EP19179627 A EP 19179627A EP 3590716 A1 EP3590716 A1 EP 3590716A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheet
- printing machine
- machine according
- printed sheets
- passage opening
- 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.)
- Withdrawn
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0015—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
- B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F21/00—Devices for conveying sheets through printing apparatus or machines
- B41F21/08—Combinations of endless conveyors and grippers
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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
- B41F23/02—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by dampening
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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
- B41F23/044—Drying sheets, e.g. between two printing stations
- B41F23/045—Drying sheets, e.g. between two printing stations by radiation
- B41F23/0456—Drying sheets, e.g. between two printing stations by radiation by infrared dryers
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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
- B41F23/044—Drying sheets, e.g. between two printing stations
- B41F23/0463—Drying sheets, e.g. between two printing stations by convection
- B41F23/0466—Drying sheets, e.g. between two printing stations by convection by using heated air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0015—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0015—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
- B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
- B41J11/0021—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation
- B41J11/00216—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation using infrared [IR] radiation or microwaves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0015—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
- B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
- B41J11/0022—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using convection means, e.g. by using a fan for blowing or sucking air
Definitions
- the present invention relates to a sheet printing machine comprising a printing station, a dryer and a sheet handling device for transporting or guiding printed sheets.
- Sheet handling devices for transporting printed sheets are, for example, sheet transport drums and conveyor belts.
- Sheet handling devices for guiding printed sheets are, for example, sheet guide plates.
- DE 10 2016 125 960 A1 describes a sheet-fed printing machine with printing units in which inkjet print heads are used.
- a sheet transport drum which interacts with a sheet guide path, is arranged between the printing units.
- the last printing unit is followed by a drying unit, which contains infrared or hot air dryers.
- the drying unit is followed by a coating module with which the printed sheets are finally coated.
- the object of the invention is to provide a sheet printing machine in which sheet deformations caused by the dryer are avoided.
- a sheet printing machine comprising a printing station, a dryer and a sheet handling device for transporting or guiding printed sheets, characterized in that the sheet handling device has a passage opening which is arranged after the dryer in the sheet transport direction and that a dampening device for remoistening the printed sheets is arranged such that it rewets the printed sheets through the passage opening.
- An advantage of the sheet-fed printing machine according to the invention is that the rewetting of the printed sheets which takes place with the dampening device can take place on the sheet side thereof which is not printed with the printing station and which can take up the rewetting liquid well.
- the passage opening can be formed by a window in the sheet handling device or by a gap between two components of the sheet handling device.
- the moistening device can have a spray device.
- the dryer can be a heat dryer, e.g. B. an infrared or hot air dryer.
- the printing station can comprise at least one inkjet print head.
- the sheet handling device can comprise at least one sheet guide plate which delimits the passage opening.
- the sheet handling device can comprise at least one conveyor belt which delimits the passage opening.
- the moistening device can comprise a format setting device for adapting the effective moistening width of the moistening device to the width of the respective format of the printed sheets.
- the format setting device can comprise at least one format diaphragm.
- the moistening device can have a clocking device for generating a spray cycle.
- the timing device can comprise a timing aperture.
- the moistening device can have a housing and a feed line for feeding a fluid into the housing and the clocking device can have an actuator for alternately aligning an outlet opening of the feed line into an active position and a passive position.
- the timing device can comprise a blowing device, which is directed at at least one spray jet of the moistening device and, during the passage of a sheet gap between two successive printed sheets, blows through the sheet gap onto the spray jet in such a way that it is deflected.
- the moistening device can comprise a series of centrifugal plates for generating spray jets.
- the passage opening can have an opening length in the sheet transport direction which is at most 30% of a sheet length which has a maximum format of the printed sheets that can be processed in the sheet printing machine.
- Figure 1 shows a sheet printing machine 1 with a sheet feeder 2, a printing station 3 with inkjet print heads 4 for multi-color printing, a dryer 5 and a sheet delivery 6.
- the printing machine further comprises a transport device 7, which transports the printed sheets past a moistening device 8.
- the transport device 7 is a chain conveyor and is arranged in the sheet delivery 6.
- the dryer 5 is a heat dryer and radiates hot air and / or infrared light onto the printed sheets in order to dry the inkjet ink thereon.
- the moistening device 8 is a remoistening device and serves to rewet the printed sheets.
- the substrate of the printed sheets e.g. the paper or the cardboard loses moisture due to the radiation with the dryer 5, which is an inevitable side effect and would lead to an annoying sheet deformation without countermeasures.
- the countermeasure in the form of remoistening at least partially compensates for the loss of moisture in the substrate caused by the drying.
- the moistening device 8 is arranged in the sheet delivery 6 and moistens the printed sheets after they have been treated by the dryer 5 and before the printed sheets are dusted with powder by a dusting device 27. Finally, the printed sheets are placed on a sheet stack 9 they form in the sheet delivery 6.
- FIG. 2a and 2b the humidification device 8 is shown in detail, wherein Figure 2a a side view according to the viewing direction IIa and Figure 2b is a plan view according to the viewing direction IIb.
- the transport device 7 comprises gripper bridges 10 for holding the printed sheets 11 on their front edge by clamping.
- the respective gripper bridge 10 drags the printed sheet 11 along a guide device 12, which guides the printed sheet pneumatically by suction air and / or blown air.
- a guide surface 25 of the guide device 12 is designed as a nozzle surface with nozzles therein, which suck in the suction air or expel the blown air.
- the guide device 12 can mechanically guide the printed sheets, the guide surface 25 being designed as a sliding surface.
- the guide surface 25 is flat and could alternatively be bowl-shaped or concave if the transport device 7 were a drum.
- the guide device 12 can be referred to in particular as a sheet guide plate.
- the moistening device 8 moistens the printed sheet 11 in the so-called clock phase (active phase).
- the moistening device 8 is located below the guiding device 12 and moistens the side of the printing sheet 11 facing the guiding device 12, which is located above the guiding device 12 and is guided through it.
- the moistening device 8 thus moistens the printed sheet 11 from below on its underside or back or unprinted side. Applying moisture to this sheet side is advantageous with regard to better moisture absorption of the printed sheet.
- the passage opening 13 can be a window or alternatively - if the guiding device 12 is in several parts and consists of plates which are arranged one behind the other in the sheet transport direction T - a gap between two plates.
- the moistening device 8 comprises a housing 14, in which a row of centrifugal plates 16 is arranged. The row of plates runs horizontally and perpendicular to the sheet transport direction T, and only one centrifugal plate 16 of the row can be seen in the drawing.
- Each spin plate 16 generates a fan-shaped or conical spray jet 17 from a fluid with which the printed sheet 11 is to be moistened.
- the spray jets 17 combine after they emerge from the housing into a single spray curtain that extends over the entire Width of the press sheet extends.
- the fluid is water, possibly with additives.
- This adjustment is carried out by a drive 23 which in Figure 2b is only indicated schematically, and is shown as Translation A with a double arrow.
- the drive 23 can, for example, comprise a pneumatic working cylinder or alternatively an electric motor with a downstream gear, for example a cam gear.
- the timing aperture 18 is out of overlap with the spray opening 15 and does not close it, so that the spray jets 17 are not blocked by the timing aperture 18.
- the printed sheet 11 In the first position, which corresponds to the clock phase, the printed sheet 11 is in overlap with the passage opening 13, so that the printed sheet 11 passing there is moistened from front to back.
- the moistening device 8 is shown in the so-called channel phase (passive phase), during which there is no printed sheet 11 in overlap with the passage opening 13.
- the channel phase there is a gap - the so-called channel - between the trailing edge of a leading printing sheet and the leading edge of a trailing sheet 11 in overlap with the passage opening 13.
- the second position of the timing plate 18 corresponds, which overlaps with the Spray opening 15 is located and closes it, so that the spray jets 17 strike the timing aperture 18 and are prevented from exiting the housing 14 by this. This prevents the moistening device 8 from spraying into the arch gaps, which would be associated with fluid waste and machine contamination.
- the timing aperture 18 is in the form of a strip that is a little longer and wider than the slot-shaped spray opening 15 in order to completely cover it.
- the spray opening 15 (seen orthogonally to the plane of the drawing) is at least as long as the maximum sheet format that can be processed in the sheet-fed printing press 1 is wide. So that the moistening device 8 does not spray past this printed sheet laterally when processing a printing sheet 11, the format of which is smaller than the maximum sheet format, the moistening device 8 has a format setting device, which comprises two format screens 19, which are directed towards one another by one or each drive 24 and can be set away from each other.
- One format aperture 19 is located at the end of the spray opening 15 on the drive side of the printing press 1 in order to partially cover it, and the other format aperture is located at the end of the spray opening 15 on the operating side of the printing press 1 in order to also partially close it.
- the drive 24 can be an electric motor with a downstream transmission, e.g. Helical gear.
- the respective format aperture 19 is adjusted perpendicularly to the sheet transport direction T with a translation B.
- the centrifugal disc 16 executes a rotation C without interruption both in the clock phase and in the channel phase, which rotation can be driven by a common motor or one motor per centrifugal plate 16.
- the housing 14 is integrated with a pump 21 in a circuit for the fluid.
- the pump 21 pumps the fluid into the housing 14 and onto the centrifugal plate 16 via a supply line 22, wherein the supply line 22 can branch into a plurality of branches and each line branch can be directed to a different centrifugal plate 16 with its outlet mouth.
- the centrifugal effect of the centrifugal plates 16 produces the spray jets 17.
- the excess fluid blocked by the orifices 18, 19 and draining off in the housing 14 passes through a discharge line 20, via which the housing 14 is connected to the pump 21, the former in the latter.
- the lines 20, 22 can be tubes or hoses.
- Figure 4 shows a diagram in which the synchronicity of the spray cycle K8 of the moistening device 8 with the delivery cycle K7 of the transport device 7 is shown.
- the abscissa is the time axis.
- the ordinate shows the presence of a printed sheet in the area of the passage opening 13 with the value "1” and the presence of a sheet gap (between two printed sheets) in the area of the passage opening 13 with the value "0" with respect to the curve with the conveying cycle K7.
- the ordinate is the spraying of the humidification device 8 through the passage opening 13 - that is, the cycle phase - with the value "1" and the non-spraying of the humidification device 8 through the passage opening 13 - that is, the channel phase - with the Value "0" shown.
- FIG. 5 shows a modification of the sheet printing machine 1.
- the passage opening 13 is delimited by two conveyor belts 16 which are connected in series in the sheet transport direction T and which transport the printing sheet 11.
- the moistening device 8 is only shown schematically and can be like that in the Figures 2a to 3b shown humidifier 8 may be formed.
- An electronic control 29 is shown which controls the moistening device 8 in such a way that the moistening agent is emitted in the conveying cycle of the printed sheets 11 and is interrupted each time the sheet gaps pass.
- the controller 29 can control the drive 23 of the timing aperture 18.
- the controller 29 can control an actuator which alternately directs the feed line 22 to the centrifugal disc 16 and away from it.
- Modifications can include that one of the two conveyor belts 26 is replaced by a guide plate, the guide surface of which lies in one plane with the upper run of the remaining conveyor belt 26.
- the sheet handling device having the passage opening 13 would consist of a guide device (guide plate) and a transport device (conveyor belt).
- the sheet handling device having the passage opening 13 consists in the Figures 2a and 3a only consists of a guide device, which in turn can consist of one or two guide plates, and the sheet handle device having the passage opening 13 in Figure 5 only from a transport device, which in turn consists of two conveyor belts, one of which transfers the printed sheets 11 to the other.
- the nozzles 28 already mentioned with reference to the previous variant are shown in the drawing, which are introduced into the guide surface 25 for the pneumatic guidance of the printed sheets 11. It can be seen from the arrow symbols that the nozzles 28 are suction nozzles here. However, the nozzles 28 could also be blowing nozzles, or a combination of suction nozzles and blowing nozzles arranged next to them, or hybrid nozzles that can be switched from suction air loading to blowing air loading.
- the Figure 6a is the viewing direction VIa and Figure 6b the direction of view VIb.
- the situation is analogous Figure 7a the viewing direction VIIa and the Figure 7b the viewing direction VIIb.
- the spray jet 13 is inclined relative to the sheet transport direction T in both variants, but in the variant according to FIG Figures 2a to 4 inclined against the sheet transport direction T (inclination at an obtuse angle) and in the variant according to Figures 6a to 7b inclined in the transport direction T (at an acute angle).
- This common feature is the opening width W of the passage opening 13 which is to be measured parallel to the sheet transport direction T.
- This opening width W is at most 30% of the sheet length of the maximum format of the printed sheets 11 which can be processed in the machine 1, which is advantageous in view of a slight impairment of sheet travel is.
- the opening width W can correspond, for example, to the slot width if the passage opening 13 has the shape of a slot-shaped window which, in the case of the guide device consisting of only one guide plate, is introduced into this guide plate.
- the opening width W can correspond to the edge distance between the rear edge of the front guide plate and the front edge of the rear guide plate.
- FIG. 8 Lock phase and 9 (channel phase) a modification of the clock aperture 18 is shown.
- the clock screen 18 was designed as a slide.
- the clock aperture 18 according to the Figures 8 and 9 designed as a swing arm.
- the timing aperture 18 does not completely close the spray opening 15, but in such a way that the spray jets 17 are intercepted by the timing aperture 18 in the channel phase and the dampening fluid is directed into the housing 14.
- the timing aperture 18 is designed as a leaf spring and has a flexible joint.
- An actuator in the form of an electromagnet 30 moves the timing aperture 18 out of its closed position which intercepts the spray jets 17 Figure 4 into their release position allowing the spray jets 17 to pass freely Figure 8 adjusted.
- the timing plate 18 either consists of a material that can be magnetically attracted by the electromagnet 30 or a piece of such material is attached to the timing plate 18.
- the electromagnet 30 is controlled by the controller 29 as a function of the delivery cycle K7, so that it generates the required spray cycle K8.
- the timing aperture 18 is reset to its closed position when the electromagnet 30 is deactivated by the controller 29 due to the bending elasticity of the timing aperture 18 itself.
- the timing aperture 18 detaches from the electromagnet 30 and snaps back into the closed position as soon as the electromagnet 30 is no longer is energized.
- a modification of the clock screen 18 designed as a rocker is possible, in which it can be pivoted about a swivel joint instead of the flexible joint.
- the timing plate 18 need not be made of a flexible or flexible sheet metal or the like and a return spring, for example a tension spring, can be provided, which moves the timing plate 18 back into the closed position.
- the return spring can be omitted if an actuator, for example a pneumatic cylinder, swings the timing aperture 18 alternately into the release position and the closed position about the swivel joint.
- the embodiment corresponds to the Figures 8 and 9 the embodiment according to the Figures 6a to 7b .
- the representation of the format aperture 19 was in the Figures 8 and 9 omitted for reasons of better clarity, although the format setting device is also available there.
- FIG. 10 Lock phase
- 11 channel phase
- the blowing device 31 is arranged on the side of the transport path of the printed sheets 11 opposite the centrifugal plates 16 of the transport path predetermined by the gripper bridge 10.
- the blowing device 31 continuously ejects a blowing air jet 32 in the direction of the spray opening 15, that is to say both in the clock phase and in the channel phase.
- the blown air jet 32 can also be referred to as an air curtain and extends over the entire width of the maximum format of the printed sheets 11.
- the blower device 31 has a nozzle slot or a row of nozzles with the corresponding length.
- the blown air jet 32 impinges on the passing printing sheet 11, especially on the top or front thereof.
- the blown air jet 32 first passes through an arc gap 33 between the rear edge 34 of a leading printing sheet 11 and the leading edge 35 of a trailing printing sheet 11 held in the gripper bridge 10 and then the passage opening 13.
- the blown air jet 32 hits the spray jet 17 and directs it into it Housing 14 um.
- the blown air jet 32 pushes the spray jet 17 downward from its original jet direction in such a way that the spray jet 17 may no longer pass through the spray opening 15 or - as in the example shown - onto the inside of the Housing 14 meets.
- On the representation of the format panels 19 was in the Figures 10 and 11 omitted for reasons of better clarity, although the format setting device is also available there.
- FIG 12 Lock phase
- FIG 13 Channel phase
- an outlet mouth 37 of the feed line 22 is alternately in an active position by an actuator 36 ( Figure 12 ) and liability position ( Figure 13 ) periodically adjustable.
- the adjustment causes the spray cycle K8 (cf. Figure 4 ), for which purpose the actuator 36 is controlled by the controller 29 (cf. Figure 5 ) is controlled depending on the funding cycle K7.
- the actuator 36 can be a pneumatic working cylinder.
- the feed line 22 can be a hose, at least in sections, which is bent by the actuator 36 when it is moved back and forth.
- the feed line 22 can be a tube, at least in sections, which is displaced or pivoted when it is moved back and forth by the actuator 36.
- the outlet mouth 37 is directed in its active position onto the centrifuge plate 16 in order to apply the fluid emerging from the outlet opening 37 thereon, and is not directed towards the centrifugal plate 16 in its passive position, and releases the fluid past the centrifugal plate 16 into the housing 14. If, as already explained, the centrifuge plate 16 is arranged in a row with further centrifugal plates 16, each centrifugal plate 16 is associated with a toggle-adjustable outlet opening 37, the outlet openings 37 being located at the ends of branches of the branching supply line 22. Each outlet mouth 37 can be moved back and forth by another actuator 36 or, alternatively, there can be a common actuator 36 for all outlet mouths 37.
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ink Jet (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
- Discharge By Other Means (AREA)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
- Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Eine Bogendruckmaschine umfasst eine Druckstation, einen Trockner (5) und eine Bogenhandhabungseinrichtung (12) zum Transportieren oder Leiten von Druckbogen (11). Die Bogenhandhabungseinrichtung (12) weist eine Durchlassöffnung (13) auf, die in Transportrichtung (T) nach dem Trockner (5) angeordnet ist. Eine Befeuchtungseinrichtung (8) zum Rückbefeuchten der Druckbogen (11) ist derart angeordnet ist, dass sie die Druckbogen (11) durch die Durchlassöffnung (13) hindurch rückbefeuchtet. Die Bogenhandhabungseinrichtung (12) kann ein Leitblech oder mehrere Leitbleche (12) umfassen.A sheet printing machine comprises a printing station, a dryer (5) and a sheet handling device (12) for transporting or guiding printed sheets (11). The sheet handling device (12) has a passage opening (13) which is arranged in the transport direction (T) after the dryer (5). A moistening device (8) for rewetting the printed sheets (11) is arranged in such a way that it rewets the printed sheets (11) through the passage opening (13). The sheet handling device (12) can comprise one guide plate or a plurality of guide plates (12).
Description
Vorliegende Erfindung betrifft eine Bogendruckmaschine, umfassend eine Druckstation, einen Trockner und eine Bogenhandhabungseinrichtung zum Transportieren oder Leiten von Druckbogen.The present invention relates to a sheet printing machine comprising a printing station, a dryer and a sheet handling device for transporting or guiding printed sheets.
Bogenhandhabungseinrichtungen zum Transportieren von Druckbogen sind beispielsweise Bogentransporttrommeln und Förderbänder. Bogenhandhabungseinrichtungen zum Leiten von Druckbogen sind beispielsweise Bogenleitbleche.Sheet handling devices for transporting printed sheets are, for example, sheet transport drums and conveyor belts. Sheet handling devices for guiding printed sheets are, for example, sheet guide plates.
In
Ungünstig daran ist, dass durch die Infrarot- oder Heißluft-Trockner dem Druckbogen Feuchtigkeit entzogen wird und infolgedessen Bogendeformationen auftreten. Durch den Lackauftrag im Lackmodul kann dem Druckbogen die Feuchtigkeit jedoch nicht wieder zugeführt werden, weil dieser Lackauftrag auf das vorher in den Druckwerken aufgedruckte Druckbild erfolgt, welches eine die Druckbogen versiegelnde Wirkung hat.The disadvantage of this is that the infrared or hot air dryer removes moisture from the printed sheet and, as a result, sheet deformation occurs. By applying the varnish in the varnish module, however, the moisture cannot be returned to the printed sheet, because this varnish is applied to the printed image previously printed in the printing units, which has a sealing effect on the printed sheet.
Aufgabe der Erfindung ist, eine Bogendruckmaschine zu schaffen, bei der durch den Trockner hervorgerufene Bogendeformationen vermieden werden.The object of the invention is to provide a sheet printing machine in which sheet deformations caused by the dryer are avoided.
Die Aufgabe wird gelöst durch eine Bogendruckmaschine, umfassend eine Druckstation, einen Trockner und eine Bogenhandhabungseinrichtung zum Transportieren oder Leiten von Druckbogen, dadurch gekennzeichnet, dass die Bogenhandhabungseinrichtung eine Durchlassöffnung aufweist, die in Bogentransportrichtung nach dem Trockner angeordnet ist, und dass eine Befeuchtungseinrichtung zum Rückbefeuchten der Druckbogen derart angeordnet ist, dass sie die Druckbogen durch die Durchlassöffnung hindurch rückbefeuchtet.The object is achieved by a sheet printing machine comprising a printing station, a dryer and a sheet handling device for transporting or guiding printed sheets, characterized in that the sheet handling device has a passage opening which is arranged after the dryer in the sheet transport direction and that a dampening device for remoistening the printed sheets is arranged such that it rewets the printed sheets through the passage opening.
Ein Vorteil der erfindungsgemäßen Bogendruckmaschine ist, dass die mit der Befeuchtungseinrichtung erfolgende Rückbefeuchtung der Druckbogen auf deren mit der Druckstation nicht bedruckte Bogenseite erfolgen kann, welche die Rückbefeuchtungsflüssigkeit gut aufnehmen kann.An advantage of the sheet-fed printing machine according to the invention is that the rewetting of the printed sheets which takes place with the dampening device can take place on the sheet side thereof which is not printed with the printing station and which can take up the rewetting liquid well.
Es sind verschiedene Weiterbildungen möglich:
Die Durchlassöffnung kann durch ein Fenster in der Bogenhandhabungseinrichtung oder durch eine Lücke zwischen zwei Bauteilen der Bogenhandhabungseinrichtung gebildet sein.Various training courses are possible:
The passage opening can be formed by a window in the sheet handling device or by a gap between two components of the sheet handling device.
Die Befeuchtungseinrichtung kann eine Sprüheinrichtung aufweisen.The moistening device can have a spray device.
Der Trockner kann ein Wärmetrockner sein, z. B. ein Infrarot- oder Heißlufttrockner.The dryer can be a heat dryer, e.g. B. an infrared or hot air dryer.
Die Druckstation kann mindestens einen Inkjet-Druckkopf umfassen.The printing station can comprise at least one inkjet print head.
Die Bogenhandhabungseinrichtung kann mindestens ein Bogenleitblech umfassen, welches die Durchlassöffnung begrenzt.The sheet handling device can comprise at least one sheet guide plate which delimits the passage opening.
Die Bogenhandhabungseinrichtung kann mindestens ein Förderband umfassen, welches die Durchlassöffnung begrenzt.The sheet handling device can comprise at least one conveyor belt which delimits the passage opening.
Die Befeuchtungseinrichtung kann eine Formateinstelleinrichtung zum Anpassen der wirksamen Befeuchtungsbreite der Befeuchtungseinrichtung auf die Breite des jeweiligen Formats der Druckbogen umfassen.The moistening device can comprise a format setting device for adapting the effective moistening width of the moistening device to the width of the respective format of the printed sheets.
Die Formateinstelleinrichtung kann mindestens eine Formatblende umfassen.The format setting device can comprise at least one format diaphragm.
Die Befeuchtungseinrichtung kann eine Taktungseinrichtung zum Erzeugen eines Sprühtaktes aufweisen.The moistening device can have a clocking device for generating a spray cycle.
Die Taktungseinrichtung kann eine Taktblende umfassen.The timing device can comprise a timing aperture.
Die Befeuchtungseinrichtung kann ein Gehäuse und eine Zuführleitung zum Zuführen eines Fluids in das Gehäuse aufweisen und die Taktungseinrichtung kann einen Aktor zum wechselweisen Ausrichten einer Austrittsmündung der Zuführleitung in eine Aktivposition und eine Passivposition aufweisen.The moistening device can have a housing and a feed line for feeding a fluid into the housing and the clocking device can have an actuator for alternately aligning an outlet opening of the feed line into an active position and a passive position.
Die Taktungseinrichtung kann eine Blaseinrichtung umfassen, die auf mindestens einen Sprühstrahl der Befeuchtungseinrichtung gerichtet ist und während des Vorbeilaufs einer Bogenlücke zwischen zwei aufeinanderfolgenden Druckbogen durch die Bogenlücke hindurch derart auf den Sprühstrahl bläst, dass dieser umgelenkt wird.The timing device can comprise a blowing device, which is directed at at least one spray jet of the moistening device and, during the passage of a sheet gap between two successive printed sheets, blows through the sheet gap onto the spray jet in such a way that it is deflected.
Die Befeuchtungseinrichtung kann eine Reihe von Schleudertellern zum Erzeugen von Sprühstrahlen umfassen.The moistening device can comprise a series of centrifugal plates for generating spray jets.
Die Durchlassöffnung kann in Bogentransportrichtung eine Öffnungslänge aufweisen, die höchstens 30% von einer Bogenlänge beträgt, die ein in der Bogendruckmaschine maximal verarbeitbares Format der Druckbogen aufweist.The passage opening can have an opening length in the sheet transport direction which is at most 30% of a sheet length which has a maximum format of the printed sheets that can be processed in the sheet printing machine.
Weiterbildungen ergeben sich auch aus der nachfolgenden Beschreibung von Ausführungsbeispielen und der dazugehörigen Zeichnung, in welcher zeigt:
- Figur 1:
- die Gesamtdarstellung einer Bogendruckmaschine mit einer Befeuchtungseinrichtung,
- Figuren 2a bis 3b:
- verschiedene Ansichten und Stellungen der Befeuchtungseinrichtung gemäß einem ersten Ausführungsbeispiel,
- Figur 4:
- ein Diagramm zur Veranschaulichung der periodischen und diskontinuierlichen Arbeitsweise der Befeuchtungseinrichtung mit allgemeiner Gültigkeit für alle Ausführungsbeispiele,
- Figur 5:
- eine Modifikation, bei der eine Bogenleiteinrichtung durch zwei Förderbänder ersetzt ist,
- Figuren 6a bis 7b:
- verschiedene Ansichten und Stellungen der Befeuchtungseinrichtung gemäß einem zweiten Ausführungsbeispiel,
Figuren 8 und 9:- verschiedene Stellungen der Befeuchtungseinrichtung gemäß einem dritten Ausführungsbeispiel,
Figuren 10 und 11:- verschiedene Betriebsphasen der Befeuchtungseinrichtung gemäß eines vierten Ausführungsbeispiel und
Figuren 12 und 13:- verschiedene Stellungen der Befeuchtungseinrichtung gemäß einem fünften Ausführungsbeispiel.
- Figure 1:
- the overall representation of a sheet-fed printing press with a dampening device,
- Figures 2a to 3b:
- different views and positions of the humidification device according to a first embodiment,
- Figure 4:
- 2 shows a diagram to illustrate the periodic and discontinuous mode of operation of the humidification device with general validity for all exemplary embodiments,
- Figure 5:
- a modification in which a sheet guiding device is replaced by two conveyor belts,
- Figures 6a to 7b:
- different views and positions of the humidification device according to a second embodiment,
- Figures 8 and 9:
- different positions of the humidification device according to a third embodiment,
- Figures 10 and 11:
- different operating phases of the humidification device according to a fourth embodiment and
- Figures 12 and 13:
- different positions of the humidification device according to a fifth embodiment.
In sämtlichen Figuren sind einander entsprechende Bauteil und Elemente mit den gleichen Bezugszeichen bezeichnet, so dass eine wiederholte Beschreibung dieser Bauteile und Elemente nicht erforderlich ist.In all the figures, corresponding components and elements are identified by the same reference numerals, so that a repeated description of these components and elements is not necessary.
Der Trockner 5 ist ein Wärmetrockner und strahlt Heißluft und/oder Infrarotlicht auf die Druckbogen, um darauf die Inkjet-Tinte zu trocknen. Die Befeuchtungseinrichtung 8 ist eine Rückbefeuchtungseinrichtung und dient der Wiederbefeuchtung der Druckbogen. Das Substrat der Druckbogen, z.B. das Papier oder der Karton, verliert durch die Bestrahlung mit dem Trockner 5 Feuchtigkeit, was ein unvermeidlicher Nebeneffekt ist und ohne Gegenmaßnahme zu einer störenden Bogendeformation führen würde. Durch die Gegenmaßnahme in Form der Wiederbefeuchtung wird der durch die Trocknung verursachte Feuchtigkeitsverlust des Substrats zumindest zum Teil ausgeglichen.The
Die Befeuchtungseinrichtung 8 ist im Bogenausleger 6 angeordnet und befeuchtet die Druckbogen, nachdem diese durch den Trockner 5 behandelt worden sind und bevor die Druckbogen durch eine Bestäubungseinrichtung 27 mit Puder bestäubt werden. Zuletzt werden die Druckbogen auf einem von ihnen gebildeten Bogenstapel 9 im Bogenausleger 6 abgelegt.The
In den
In der Leiteinrichtung 12 befindet sich eine Durchlassöffnung 13, durch welche hindurch die Befeuchtungseinrichtung 8 in der sogenannten Taktphase (Aktivphase) den Druckbogen 11 befeuchtet. Die Befeuchtungseinrichtung 8 befindet sich unterhalb der Leiteinrichtung 12 und befeuchtet die der Leiteinrichtung 12 zugewandte Seite des Druckbogens 11, welcher sich dabei oberhalb der Leiteinrichtung 12 befindet und durch diese geleitet wird. Die Befeuchtungseinrichtung 8 befeuchtet den Druckbogen 11 also von unten her auf seiner Unterseite oder Rückseite oder unbedruckten Seite. Der Feuchteauftrag auf diese Bogenseite ist hinsichtlich einer besseren Feuchtigkeitsaufnahme des Druckbogens vorteilhaft.In the
Die Durchlassöffnung 13 kann ein Fenster sein oder alternativ - wenn die Leiteinrichtung 12 mehrteilig ist und aus Platten besteht, die in Bogentransportrichtung T hintereinander angeordnet sind - eine Lücke zwischen zwei Platten. Die Befeuchtungseinrichtung 8 umfasst ein Gehäuse 14, in dem eine Reihe von Schleudertellern 16 angeordnet ist. Die Tellerreihe verläuft horizontal und senkrecht zur Bogentransportrichtung T, und in der Zeichnung ist nur ein Schleuderteller 16 der Reihe zu sehen. Jeder Schleuderteller 16 erzeugt einen fächer- oder kegelförmigen Sprühstrahl 17 aus einem Fluid, mit dem der Druckbogen 11 befeuchtet werden soll. Die Sprühstrahlen 17 vereinigen sich nach ihrem Austritt aus dem Gehäuse zu einem einzigen Sprühvorhang, der sich über die gesamte Breite des Druckbogens erstreckt. Das Fluid ist Wasser, gegebenenfalls mit Zusätzen. Beim Befeuchten in der Taktphase treten die Sprühstrahlen 17 durch eine Sprühöffnung 15 des Gehäuses 14 daraus aus und danach durch die Durchlassöffnung 13 hindurch.The
Eine Taktblende 18, die auch als dynamischer Shutter bezeichnet werden kann, wird im Fördertakt der Druckbogen 11 in periodischem Wechsel in eine erste und zweite Position verstellt. Diese Verstellung erfolgt durch einen Antrieb 23, der in
In den
Die Sprühöffnung 15 ist (orthogonal zur Zeichnungsebene gesehen) mindestens so lang, wie das in der Bogendruckmaschine 1 verarbeitbare maximale Bogenformat breit ist. Damit die Befeuchtungseinrichtung 8 bei der Verarbeitung eines Druckbogens 11, dessen Format kleiner als das maximale Bogenformat ist, an diesem Druckbogen seitlich nicht vorbeisprüht, hat die Befeuchtungseinrichtung 8 eine Formateinstelleinrichtung, welche zwei Formatblenden 19 umfasst, die durch einen oder jeweils einen Antrieb 24 aufeinander zu und voneinander weg eingestellt werden können. Die eine Formatblende 19 befindet sich am auf der Antriebsseite der Druckmaschine 1 liegenden Ende der Sprühöffnung 15, um diese teilweise abzudecken, und die andere Formatblende befindet sich am auf der Bedienseite der Druckmaschine 1 liegenden Ende der Sprühöffnung 15, um diese ebenfalls teilweise zu verschließen. Die von den Schleudertellern 16 außerhalb der zu verarbeitenden Bogenformatbreite abgegebenen Sprühstrahlen 17 oder Teile der Sprühstrahlen 17 prallen auf die Formatblenden 19 und werden durch diese vom Austritt aus dem Gehäuse 14 abgehalten. In der Zeichnung ist nur eine der beiden Formatblenden 19 dargestellt, die jeweils breiter als die Sprühöffnung 15 sind. Jede Formatblende 19 behält ihre für das Bogenformat des jeweiligen Druckjobs eingestellte Position während dieses Druckjobs unverändert bei und kann als statischer Shutter bezeichnet werden. Der Antrieb 24 kann ein Elektromotor mit nachgeschaltetem Getriebe, z.B. Schraubengetriebe, sein. Die Justage der jeweiligen Formatblende 19 erfolgt senkrecht zur Bogentransportrichtung T mit einer Translation B.The spray opening 15 (seen orthogonally to the plane of the drawing) is at least as long as the maximum sheet format that can be processed in the sheet-fed
Die Schleuderteller 16 führen sowohl in der Taktphase als auch in der Kanalphase ohne Unterbrechung eine Rotation C aus, die von einem gemeinsamen Motor oder jeweils einem Motor pro Schleuderteller 16 angetrieben werden kann.The
Das Gehäuse 14 ist zusammen mit einer Pumpe 21 in einen Kreislauf für das Fluid eingebunden. Die Pumpe 21 pumpt über eine Zuführleitung 22 das Fluid in das Gehäuse 14 und auf die Schleuderteller 16, wobei die Zuführleitung 22 sich in eine Mehrzahl von Ästen verzweigen kann und jeder Leitungsast mit seiner Austrittsmündung auf einen anderen Schleuderteller 16 gerichtet sein kann. Die Schleuderteller 16 erzeugen per Zentrifugalwirkung die Sprühstrahlen 17. Der von den Blenden 18, 19 blockierte und im Gehäuse 14 ablaufende Fluidüberschuss gelangt über eine Abführleitung 20, über welche das Gehäuse 14 mit der Pumpe 21 verbunden ist, aus ersterem in letztere. Die Leitungen 20, 22 können Rohre oder Schläuche sein.The
Zeichnerisch nicht dargestellte Modifikationen können beinhalten, dass eines der beiden Förderbänder 26 durch ein Leitblech ersetzt ist, dessen Leitfläche mit dem oberen Trum des verbleibenden Förderbandes 26 in einer Ebene liegt. Hierbei würde die die Durchlassöffnung 13 aufweisende Bogenhandhabungseinrichtung aus einer Leiteinrichtung (Leitblech) und einer Transporteinrichtung (Förderband) bestehen. Demgegenüber besteht die die Durchlassöffnung 13 aufweisende Bogenhandhabeeinrichtung in den
In den
In den
Der
In den
In der
Es ist eine Modifikation der als Schwinge ausgebildeten Taktblende 18 möglich, bei welcher diese um ein Drehgelenk statt des Biegegelenks schwenkbar ist. Bei dieser Modifikation braucht die Taktblende 18 nicht aus einem biegeelastischen bzw. flexiblen Blech oder dergleichen zu bestehen und kann eine Rückstellfeder, z.B. eine Zugfeder, vorhanden sein, welche die Taktblende 18 in die Verschlussposition zurück verstellt. Die Rückstellfeder kann entfallen, wenn ein Aktor, z.B. ein Pneumatikzylinder, die Taktblende 18 wechselweise in die Freigabeposition und die Verschlussposition um das Drehgelenk schwenkt. Bis auf die Ausbildung der Taktblende 18 als Schwenkblende entspricht das Ausführungsbeispiel nach den
In der
Ein weiteres Ausführungsbeispiel ist in
- 11
- BogendruckmaschineSheetfed
- 22
- Bogenanlegersheet feeder
- 33
- Druckstationprinting station
- 44
- Inkjet-DruckkopfInkjet printhead
- 55
- Trocknerdryer
- 66
- Bogenauslegersheet delivery
- 77
- Transporteinrichtungtransport means
- 88th
- Befeuchtungseinrichtunghumidifying
- 99
- Bogenstapelsheet pile
- 1010
- Greiferbrückegripper
- 1111
- Druckbogensheet
- 1212
- Leiteinrichtungguide
- 1313
- DurchlassöffnungPort
- 1414
- Gehäusecasing
- 1515
- Sprühöffnungspray opening
- 1616
- SchleudertellerWhirling plate
- 1717
- Sprühstrahlspray
- 1818
- Taktblendeclock panel
- 1919
- Formatblendeformat panel
- 2020
- Abführleitungdischarge
- 2121
- Pumpepump
- 2222
- Zuführleitungfeed
- 2323
- Antriebdrive
- 2424
- Antriebdrive
- 2525
- Leitflächebaffle
- 2626
- Förderbandconveyor belt
- 2727
- Bestäubungseinrichtungdusting device
- 2828
- Düsejet
- 2929
- Steuerungcontrol
- 3030
- Elektromagnetelectromagnet
- 3131
- Blaseinrichtungblower
- 3232
- Blasluftstrahlair jet
- 3333
- Bogenlückearc gap
- 3434
- Hinterkantetrailing edge
- 3535
- Vorderkanteleading edge
- 3636
- Aktoractuator
- 3737
- Austrittsmündungoutlet opening
- AA
- TranslationTranslation
- BB
- TranslationTranslation
- CC
- Rotationrotation
- K7K7
- Fördertaktconveying cycle
- K8K8
- SprühtaktSpraying cycle
- TT
- BogentransportrichtungSheet transport direction
- WW
- Öffnungsweiteopening width
Claims (15)
dadurch gekennzeichnet,
dass die Bogenhandhabungseinrichtung (12, 26) eine Durchlassöffnung (13) aufweist, die in Bogentransportrichtung (T) nach dem Trockner (5) angeordnet ist, und dass eine Befeuchtungseinrichtung (8) zum Rückbefeuchten der Druckbogen (11) derart angeordnet ist, dass sie die Druckbogen (11) durch die Durchlassöffnung (13) hindurch rückbefeuchtet.Sheet printing machine, comprising a printing station (3), a dryer (5) and a sheet handling device (12, 26) for transporting or guiding printed sheets (11),
characterized,
that the sheet handling device (12, 26) has a passage opening (13) which is arranged in the sheet transport direction (T) after the dryer (5), and that a moistening device (8) for remoistening the printed sheets (11) is arranged such that it the printed sheets (11) are re-moistened through the passage opening (13).
dadurch gekennzeichnet,
dass die Durchlassöffnung (13) durch ein Fenster in der Bogenhandhabungseinrichtung (12, 26) oder durch eine Lücke zwischen zwei Bauteilen der Bogenhandhabungseinrichtung (12, 26) gebildet wird.Sheet printing machine according to claim 1,
characterized,
that the passage opening (13) is formed by a window in the sheet handling device (12, 26) or by a gap between two components of the sheet handling device (12, 26).
dadurch gekennzeichnet,
dass die Befeuchtungseinrichtung (8) eine Sprüheinrichtung aufweist.Sheet printing machine according to claim 1 or 2,
characterized,
that the moistening device (8) has a spray device.
dadurch gekennzeichnet,
dass der Trockner (5) ein Wärmetrockner ist.Sheet printing machine according to one of claims 1 to 3,
characterized,
that the dryer (5) is a heat dryer.
dadurch gekennzeichnet,
dass die Druckstation (3) einen Inkjet-Druckkopf (4) umfasst.Sheet printing machine according to claims 1 to 4,
characterized,
that the printing station (3) comprises an inkjet print head (4).
dadurch gekennzeichnet,
dass die Bogenhandhabungseinrichtung (12) mindestens ein Bogenleitblech umfasst, das die Durchlassöffnung (13) begrenzt.Sheet printing machine according to one of claims 1 to 5,
characterized,
that the sheet handling device (12) comprises at least one sheet guide plate which delimits the passage opening (13).
dadurch gekennzeichnet,
dass die Bogenhandhabungseinrichtung (26) mindestens ein Förderband (26) umfasst, das die Durchlassöffnung (13) begrenzt.Sheet printing machine according to one of claims 1 to 6,
characterized,
that the sheet handling device (26) comprises at least one conveyor belt (26) which delimits the passage opening (13).
dadurch gekennzeichnet,
dass die Befeuchtungseinrichtung (8) eine Formateinstelleinrichtung zum Anpassen der Befeuchtungsbreite auf die Breite des jeweiligen Formats der Druckbogen (11) umfasst.Sheet printing machine according to one of claims 1 to 7,
characterized,
that the moistening device (8) comprises a format setting device for adapting the moistening width to the width of the respective format of the printed sheets (11).
dadurch gekennzeichnet,
dass die Formateinstelleinrichtung mindestens eine Formatblende (19) umfasst.Sheet printing machine according to claim 8,
characterized,
that the format setting device comprises at least one format diaphragm (19).
dadurch gekennzeichnet,
dass die Befeuchtungseinrichtung (8) eine Taktungseinrichtung zum Erzeugen eines Sprühtaktes (K8) aufweist.Sheet printing machine according to one of claims 1 to 9,
characterized,
that the moistening device (8) has a clocking device for generating a spray cycle (K8).
dadurch gekennzeichnet,
dass die Taktungseinrichtung eine Taktblende (18) umfasst.Sheet printing machine according to claim 10,
characterized,
that the clocking device comprises a clock screen (18).
dadurch gekennzeichnet,
dass die Befeuchtungseinrichtung (8) ein Gehäuse (14) und eine Zuführleitung (22) zum Zuführen eines Fluids in das Gehäuse (14) aufweist, und dass die Taktungseinrichtung einen Aktor (36) zum wechselweisen Ausrichten einer Austrittsmündung (37) der Zuführleitung (22) in eine Aktivposition und eine Passivposition aufweist.Sheet printing machine according to claim 10,
characterized,
that the humidification device (8) has a housing (14) and a feed line (22) for feeding a fluid into the housing (14), and that the clocking device has an actuator (36) for alternately aligning an outlet opening (37) of the feed line (22 ) has an active position and a passive position.
dadurch gekennzeichnet,
dass die Taktungseinrichtung eine Blaseinrichtung (31) umfasst, die auf einen Sprühstrahl (17) der Befeuchtungseinrichtung (8) gerichtet ist und während des Vorbeilaufs einer Bogenlücke (33) zwischen den Druckbogen (11) durch die Bogenlücke (33) hindurch derart auf den Sprühstrahl (17) bläst, dass dieser umgelenkt wird.Sheet printing machine according to claim 10,
characterized,
that the timing device comprises a blowing device (31) which is directed onto a spray jet (17) of the moistening device (8) and during the passage of a sheet gap (33) between the printed sheets (11) through the sheet gap (33) in such a way onto the spray jet (17) blows that this is deflected.
dadurch gekennzeichnet,
dass die Befeuchtungseinrichtung (8) eine Reihe von Schleudertellern (16) umfasst.Sheet printing machine according to one of claims 1 to 13,
characterized,
that the moistening device (8) comprises a number of centrifugal plates (16).
dadurch gekennzeichnet,
dass die Durchlassöffnung (13) in Bogentransportrichtung (T) eine Öffnungsweite (W) aufweist, die höchstens 30% von einer Bogenlänge beträgt, die ein verarbeitbares Maximalformat der Druckbogen (11) aufweist.Sheet printing machine according to one of claims 1 to 14,
characterized,
that the passage opening (13) in the sheet transport direction (T) has an opening width (W) that is at most 30% of a sheet length that has a processable maximum format of the printed sheets (11).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102018211079.4A DE102018211079A1 (en) | 2018-07-05 | 2018-07-05 | Sheet printing machine with a dampening device |
Publications (1)
Publication Number | Publication Date |
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EP3590716A1 true EP3590716A1 (en) | 2020-01-08 |
Family
ID=66912551
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP19179627.5A Withdrawn EP3590716A1 (en) | 2018-07-05 | 2019-06-12 | Sheet fed printing machine with a humidifier |
Country Status (5)
Country | Link |
---|---|
US (1) | US11014377B2 (en) |
EP (1) | EP3590716A1 (en) |
JP (2) | JP2020015312A (en) |
CN (1) | CN110682695A (en) |
DE (1) | DE102018211079A1 (en) |
Families Citing this family (4)
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CN112140716B (en) * | 2020-10-20 | 2022-08-09 | 泸州裕同包装科技有限公司 | Printing method for preventing paper deformation of packaging printing machine |
DE102021212259A1 (en) | 2021-10-29 | 2023-05-04 | Bhs Corrugated Maschinen- Und Anlagenbau Gmbh | steam ejection device |
CN114654879A (en) * | 2022-03-17 | 2022-06-24 | 劲标精致科技(深圳)有限公司 | Printing surface humidifying treatment device and method capable of automatically correcting for paperboard printing processing |
CN115352186B (en) * | 2022-09-23 | 2024-04-05 | 武汉虹之彩包装印刷有限公司 | A humidification device for printing sample |
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FR1496302A (en) * | 1966-10-08 | 1967-09-29 | Miller Printing Machinery Co | Method and apparatus for packaging printed paper |
DE10144159A1 (en) * | 2001-09-08 | 2003-03-27 | Koenig & Bauer Ag | Sheet guide in printer delivery systems has grippers, cooling box with sheet guide-plate with openings in and ventilators |
US20110279612A1 (en) * | 2010-05-17 | 2011-11-17 | Canon Kabushiki Kaisha | Inkjet printing apparatus and calibration method |
WO2013160167A1 (en) * | 2012-04-27 | 2013-10-31 | Oce-Technologies B.V. | Print media moisturizing unit |
DE102016125960A1 (en) | 2015-12-31 | 2017-07-06 | manroland sheetfed GmbH | Inkjet printing device on a sheet-fed offset printing press |
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DE19901802B4 (en) * | 1999-01-19 | 2004-02-12 | Baldwin Germany Gmbh | Device for rewetting a dried paper web |
DE19950009B4 (en) * | 1999-10-18 | 2012-11-22 | Eltex-Elektrostatik Gmbh | Device for moistening a material web |
AU2003250955A1 (en) | 2002-07-16 | 2004-02-02 | Ebe Hesterman | Digital printing machine |
DE10312870A1 (en) * | 2002-07-16 | 2004-02-26 | Ebe Hesterman | Digital printing machine for sheet fed printing for first impression and verso printing of packaging materials with satellite arrangement of printing units for up to seven colors and sheet fed gripper system |
DE102007062454A1 (en) * | 2007-12-22 | 2009-07-02 | Robert Bosch Gmbh | Method for regulating a web tension and / or a register |
JP5132743B2 (en) * | 2010-09-27 | 2013-01-30 | キヤノン株式会社 | Recording device |
CN204936478U (en) * | 2015-05-18 | 2016-01-06 | 长沙东升绝缘材料有限公司 | Paper humidity self-checking device |
DE102015222753B4 (en) * | 2015-11-18 | 2019-02-28 | Koenig & Bauer Ag | Flat material processing apparatus and a method of processing a flat material |
DE102017208739A1 (en) * | 2016-05-24 | 2017-11-30 | Koenig & Bauer Ag | Sheetfed |
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2018
- 2018-07-05 DE DE102018211079.4A patent/DE102018211079A1/en not_active Withdrawn
-
2019
- 2019-05-28 CN CN201910450755.4A patent/CN110682695A/en active Pending
- 2019-06-12 EP EP19179627.5A patent/EP3590716A1/en not_active Withdrawn
- 2019-07-04 JP JP2019125171A patent/JP2020015312A/en active Pending
- 2019-07-05 US US16/503,780 patent/US11014377B2/en active Active
-
2020
- 2020-03-30 JP JP2020001130U patent/JP3226905U/en not_active Expired - Fee Related
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FR1496302A (en) * | 1966-10-08 | 1967-09-29 | Miller Printing Machinery Co | Method and apparatus for packaging printed paper |
DE10144159A1 (en) * | 2001-09-08 | 2003-03-27 | Koenig & Bauer Ag | Sheet guide in printer delivery systems has grippers, cooling box with sheet guide-plate with openings in and ventilators |
US20110279612A1 (en) * | 2010-05-17 | 2011-11-17 | Canon Kabushiki Kaisha | Inkjet printing apparatus and calibration method |
WO2013160167A1 (en) * | 2012-04-27 | 2013-10-31 | Oce-Technologies B.V. | Print media moisturizing unit |
DE102016125960A1 (en) | 2015-12-31 | 2017-07-06 | manroland sheetfed GmbH | Inkjet printing device on a sheet-fed offset printing press |
Also Published As
Publication number | Publication date |
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US11014377B2 (en) | 2021-05-25 |
US20200009883A1 (en) | 2020-01-09 |
CN110682695A (en) | 2020-01-14 |
JP2020015312A (en) | 2020-01-30 |
JP3226905U (en) | 2020-07-27 |
DE102018211079A1 (en) | 2020-01-09 |
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