EP3067211B1 - Printing machine with transport system - Google Patents

Printing machine with transport system Download PDF

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Publication number
EP3067211B1
EP3067211B1 EP16154379.8A EP16154379A EP3067211B1 EP 3067211 B1 EP3067211 B1 EP 3067211B1 EP 16154379 A EP16154379 A EP 16154379A EP 3067211 B1 EP3067211 B1 EP 3067211B1
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EP
European Patent Office
Prior art keywords
transport
printing machine
machine according
printing
drive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
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EP16154379.8A
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German (de)
French (fr)
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EP3067211A1 (en
Inventor
Sven Goll
Andreas MÜLLER
Kai Oskar Müller
Burkhard Wolf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Heidelberger Druckmaschinen AG
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Heidelberger Druckmaschinen AG
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Publication of EP3067211A1 publication Critical patent/EP3067211A1/en
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Classifications

    • 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
    • B41J11/02—Platens
    • B41J11/06—Flat page-size platens or smaller flat platens having a greater size than line-size platens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/02—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains
    • B65H5/021—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains by belts
    • 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
    • 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
    • B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
    • B41J13/08—Conveyor bands or like feeding devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices

Definitions

  • the invention relates to a printing press with a transport system according to the preamble of claim 1.
  • linear actuators In order to enable a high-precision drive of constant speed of the tablets in the range of the printheads, in the EP 2 127 889 A1 proposed to use linear actuators.
  • the linear drives are spatially below the career of the tablets in the field of printheads.
  • the linear drive then moves the tablet under the printheads and an on-tablet sheet can be printed. After printing the sheet, the tablet is taken over by another drive system, namely a chain drive.
  • a respective linear drive can drive back to its original position and take over a new tablet there.
  • a plurality of linear actuators is provided.
  • a disadvantage of this drive concept the high cost of linear drives and their complex assembly.
  • Another disadvantage is the high service requirements, since the linear actuators often tend due to their open design to failures due to contamination.
  • a printing press according to the preamble of claim 1 is known from WO2012 / 108870 A1 known.
  • Object of the present invention is to provide a printing machine whose transport system is accurate, not susceptible to contamination and easy to set up and assembly and at least partially solves the disadvantages of the prior art.
  • the transport system should have a constant transport speed in the transport direction on a predefined subsection of a transport path. This object is achieved by a printing machine having the features of claim 1.
  • the printing machine has at least one printing station for printing sheet-like elements, in particular sheets of paper, cardboard, plastic and cardboard and a transport system for transporting the printed and the printed sheet-like elements, wherein the transport system a plurality of circulating along a closed transport path transport tables and has a drive device for moving the transport table.
  • the sheet-like elements may also be tiles, bricks, fabrics, clothing, boards, panels, or the like. act.
  • the drive device has servomotors driven, peripheral enveloping drives, for example belts, wherein in each case a servomotor drives an enveloping drive.
  • the envelopes can be driven in an advantageous manner continuously and thus at a constant speed.
  • the Hülltriebe are equipped with drivers and the drivers can temporarily get into engagement with the transport tables to move the transport tables along a leg of the transport route.
  • the speed of the envelopes can be different from the be constant speed, if necessary, a speed profile can also be traversed.
  • the number of required envelopes is dependent inter alia on the length of the section.
  • only one transport table is moved by each envelope drive, so that no disturbances can result from other transport tables and a sheet-like element moved by the transport table can be transported through the printing station at a very constant speed.
  • a plurality of spaced-apart carriers are attached to each envelope drive. This has the advantage that the number of required envelopes and servomotors can be limited.
  • the drive device has an additional enveloping drive, which can be designed as a chain drive for moving the transport tables along the remaining transport path, i. where the transport tables are not from the drivers of the o.g. Hülltriebe be transported.
  • the transport tables are designed as sheet-like sheet holding elements with a support surface for the flat support of the sheet-like elements to be transported, referred to as tablets. Suction holes for securely holding a sheet-like element on the transport table can be provided in the region of the support surface.
  • the enveloping mechanisms are designed as belts, in particular as toothed belts, whose teeth are in engagement with complementary teeth of a drive wheel coupled to the servomotor.
  • the drive wheels can be driven either directly from the servomotors or indirectly via intermediate toothed belt.
  • the toothed belts are in particular arrow-toothed, round-toothed or helical teeth designed to reduce or avoid the polygon effect, which causes a fluctuation of the speed and generally vibrations of the toothed belt.
  • carriers are provided in the transport tables, which can be configured as recesses into which the driver of the transport table can engage, which may be at the recesses also complementarily shaped, attached to the undersides of the transport table driver. Switching elements for activating the drivers are not required in such an embodiment.
  • the servomotors are designed as synchronous motors.
  • the printing station can be designed as a digital printing station and in particular have a plurality of inkjet heads.
  • FIG. 1 shows a printing machine 100 according to the invention, printed in the coming of a feeder 2 sheet 1000 in a printing station 1 and then laid out in a display 3.
  • the sheets are moved in the area of the printing station 1 by a transport system 9 along a transport path 7 and thereby printed. While a respective sheet 1000 is transported in the transport direction T, it lies flat on a transport table 4. The top of each sheet 1000 is thus freely accessible and can be printed by non-illustrated printheads in the printing station 1.
  • the transport tables 4 are moved by a drive device 5 on a revolving path.
  • the drive device 5 has, for one, a chain drive 6 as well as toothed belts 10 driven by servomotors 11, the latter moving the transport tables 4 along a section 7 of the transport path located in the printing station 1.
  • the drive is realized by the chain drive 6.
  • a respective toothed belt 10 is driven by an associated servo motor 11. As in FIG. 1 indicated, a plurality of such timing belt 10 and servomotors 11 are provided. On a respective toothed belt 10 drivers 12 are mounted, which are brought in the region of the printing station 1 with the transport tables 4 into engagement and move the transport tables 4. During transport of the transport tables 4 by means of the drivers 12, the transport tables 4 are decoupled from the chain drive 6.
  • FIG. 2 the drive device 5 can be seen in a more detailed representation.
  • a driver 12 of the toothed belt 10 engages with a driver 13, which is arranged on the underside of a transport table 4 and has a complementary to the driver 12 recess.
  • the process of Dipping the driver 12 in the driver 13 is indicated by a dashed line of the driver 12, 13.
  • FIG. 3 shows a plan view of the drive device 5. It can be seen that each of the four timing belt 10 has its own servo motor 11 is assigned. On a respective toothed belt 10 are a plurality of drivers 12, so that while a located in the upper run of the belt 10 driver 12 moves a transport table 4, located in the lower run of the belt 10 driver 12 is moved to the beginning of the section 7.
  • the detailed representations A, B, C show an enlarged view of the inside of the toothed belt 10.
  • the toothed belt is helically toothed, according to the variant B arrow-toothed and round-toothed according to the variant C.
  • the drive wheels 14 accordingly have a complementary toothing.

Landscapes

  • Delivering By Means Of Belts And Rollers (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Ink Jet (AREA)

Description

Die Erfindung betrifft eine Druckmaschine mit einem Transportsystem gemäß dem Oberbegriff von Anspruch 1.The invention relates to a printing press with a transport system according to the preamble of claim 1.

Stand der TechnikState of the art

Zum Bedrucken von Bogen aus Papier, Karton und Pappe in kleinen Auflagen oder mit individuellen Druckmotiven ist der Einsatz von Digitaldruckmaschinen bekannt. Beim Einsatz von Inkjetköpfen zum Bedrucken der Bogen wird ein jeweiliger Bogen von einem Transportsystem in einem minimalen Abstand unter den Inkjetköpfen hindurch bewegt. Als Transportsysteme sind umlaufende Transportbänder, beispielsweise ausgeführt als Saugbänder, und rotierende Zylinder, sogenannte Jettingzylinder, bekannt. Aus der US 8,579,286 B2 ergibt sich eine alternative Ausführung eines Transportsystems: Die Bogen werden von einem Bogenanleger flächig auf Transporttische, sogenannte Tablets, abgelegt, wobei die Tablets unter den Druckköpfen hindurch bewegt werden, so dass die Oberseite eines jeweils auf einem Tablet aufliegenden Bogens von den Druckköpfen bedruckt werden kann. Nach erfolgtem Druckprozess werden die Bogen von den Tablets wieder abgenommen. Der Antrieb der Tablets erfolgt dabei durch ein Kettensystem.For printing sheets of paper, cardboard and cardboard in short runs or with individual print motifs, the use of digital printing machines is known. When using inkjet heads for printing on the sheets, a respective sheet is moved by a transport system at a minimum distance below the inkjet heads. As transport systems are circulating conveyor belts, for example, designed as suction belts, and rotating cylinders, known as Jettingzylinder known. From the US 8,579,286 B2 results in an alternative embodiment of a transport system: The sheets are flat from a sheet feeder on transport tables, so-called tablets, stored, the tablets are moved under the printheads, so that the top of each resting on a tablet sheet can be printed by the printheads , After the printing process, the sheets are removed again from the tablets. The tablets are driven by a chain system.

Um einen hochgenauen Antrieb konstanter Geschwindigkeit der Tablets im Bereich der Druckköpfe zu ermöglichen, wird in der EP 2 127 889 A1 vorgeschlagen, Linearantriebe zu verwenden. Die Linearantriebe befinden sich räumlich gesehen unterhalb der Laufbahn der Tablets im Bereich der Druckköpfe. Um ein Tablet unter den Druckköpfen hindurch zu bewegen, wird das Tablet über schaltbare Mitnehmer mit einem Linearantrieb verbunden. Der Linearantrieb bewegt sodann das Tablet unter den Druckköpfen hindurch und ein auf dem Tablet aufliegender Bogen kann bedruckt werden. Nach erfolgtem Bedrucken des Bogens wird das Tablet von einem anderen Antriebssystem übernommen, nämlich einem Kettenantrieb. Ein jeweiliger Linearantrieb kann wieder zurück in seine Ausgangsstellung fahren und dort ein neues Tablet übernehmen. Um einen annähernd kontinuierlichen Betrieb der Druckköpfe zu ermöglichen, ist eine Mehrzahl von Linearantrieben vorgesehen. Nachteilig an diesem Antriebskonzept sind die hohen Kosten der Linearantriebe und deren aufwändige Montage. Ein weiterer Nachteil ergibt sich durch den hohen Servicebedarf, da die Linearantriebe durch ihre offene Bauart häufig zu Ausfällen aufgrund von Verschmutzungen neigen. Eine Druckmaschine gemäß dem Oberbegriff des Anspruchs 1 ist aus der WO2012/108870 A1 bekannt.In order to enable a high-precision drive of constant speed of the tablets in the range of the printheads, in the EP 2 127 889 A1 proposed to use linear actuators. The linear drives are spatially below the career of the tablets in the field of printheads. To move a tablet under the printheads, the tablet is connected via switchable drivers with a linear drive. The linear drive then moves the tablet under the printheads and an on-tablet sheet can be printed. After printing the sheet, the tablet is taken over by another drive system, namely a chain drive. A respective linear drive can drive back to its original position and take over a new tablet there. To a nearly continuous Operation of the printheads, a plurality of linear actuators is provided. A disadvantage of this drive concept, the high cost of linear drives and their complex assembly. Another disadvantage is the high service requirements, since the linear actuators often tend due to their open design to failures due to contamination. A printing press according to the preamble of claim 1 is known from WO2012 / 108870 A1 known.

Aufgabenstellungtask

Aufgabe der vorliegenden Erfindung ist es eine Druckmaschine zu schaffen, deren Transportsystem genau, unanfällig gegen Verschmutzungen und einfach in Aufbau und Montage ist und die Nachteile des Standes der Technik zumindest teilweise behebt. Insbesondere soll das Transportsystem auf einer vordefinierten Teilstrecke einer Transportstrecke eine konstante Transportgeschwindigkeit in Transportrichtung aufweisen. Gelöst wird diese Aufgabe durch eine Druckmaschine mit den Merkmalen von Anspruch 1.Object of the present invention is to provide a printing machine whose transport system is accurate, not susceptible to contamination and easy to set up and assembly and at least partially solves the disadvantages of the prior art. In particular, the transport system should have a constant transport speed in the transport direction on a predefined subsection of a transport path. This object is achieved by a printing machine having the features of claim 1.

Die erfindungsgemäße Druckmaschine besitzt mindestens eine Druckstation zum Bedrucken von flächenförmigen Elementen, insbesondere Bogen aus Papier, Pappe, Kunststoff und Karton und ein Transportsystem zum Transportieren der zu bedruckenden und der bedruckten flächenförmigen Elemente, wobei das Transportsystem eine Mehrzahl von entlang einer geschlossenen Transportstrecke umlaufenden Transporttischen und eine Antriebsvorrichtung zum Bewegen der Transporttische besitzt. Bei den flächenförmigen Elementen kann es sich auch um Fliesen, Ziegel, Stoffe, Bekleidungsstücke, Bretter, Paneele o.ä. handeln. Erfindungsgemäß besitzt die Antriebsvorrichtung von Servomotoren angetriebene, umlaufende Hülltriebe, beispielsweise Riemen, wobei jeweils ein Servomotor einen Hülltrieb antreibt. Die Hülltriebe können in vorteilhafter Weise kontinuierlich und somit mit konstanter Geschwindigkeit gefahren werden. Erfindungsgemäß sind die Hülltriebe mit Mitnehmern bestückt und die Mitnehmer können temporär in Eingriff mit den Transporttischen gelangen zum Bewegen der Transporttische entlang einer Teilstrecke der Transportstrecke. Während dem Einkoppeln bzw. Auskoppeln der Mitnehmer kann die Geschwindigkeit der Hülltriebe verschieden von der konstanten Geschwindigkeit sein, ggfs. kann auch ein Geschwindigkeitsprofil abgefahren werden. Die Anzahl erforderlicher Hülltriebe ist dabei unter anderem von der Länge der Teilstrecke abhängig. In einer besonders bevorzugten Ausgestaltung wird von jedem Hülltrieb nur ein Transporttisch bewegt, sodass sich keine Störungen durch andere Transporttische ergeben können und ein vom Transporttisch bewegtes flächenförmiges Element mit einer sehr konstanten Geschwindigkeit durch die Druckstation hindurch transportiert werden kann.The printing machine according to the invention has at least one printing station for printing sheet-like elements, in particular sheets of paper, cardboard, plastic and cardboard and a transport system for transporting the printed and the printed sheet-like elements, wherein the transport system a plurality of circulating along a closed transport path transport tables and has a drive device for moving the transport table. The sheet-like elements may also be tiles, bricks, fabrics, clothing, boards, panels, or the like. act. According to the invention, the drive device has servomotors driven, peripheral enveloping drives, for example belts, wherein in each case a servomotor drives an enveloping drive. The envelopes can be driven in an advantageous manner continuously and thus at a constant speed. According to the Hülltriebe are equipped with drivers and the drivers can temporarily get into engagement with the transport tables to move the transport tables along a leg of the transport route. During the coupling or decoupling of the driver, the speed of the envelopes can be different from the be constant speed, if necessary, a speed profile can also be traversed. The number of required envelopes is dependent inter alia on the length of the section. In a particularly preferred embodiment, only one transport table is moved by each envelope drive, so that no disturbances can result from other transport tables and a sheet-like element moved by the transport table can be transported through the printing station at a very constant speed.

In einer besonders vorteilhaften und daher bevorzugten Weiterbildung der erfindungsgemäßen Druckmaschine sind an jedem Hülltrieb mehrere voneinander beabstandete Mitnehmer angebracht. Dies hat den Vorteil, dass die Anzahl erforderlicher Hülltriebe und Servomotoren begrenzt werden kann.In a particularly advantageous and therefore preferred development of the printing press according to the invention, a plurality of spaced-apart carriers are attached to each envelope drive. This has the advantage that the number of required envelopes and servomotors can be limited.

In der erfindungsgemäßen Druckmaschine besitzt die Antriebsvorrichtung einen zusätzlichen Hülltrieb, welcher ausgeführt sein kann als ein Kettenantrieb zum Bewegen der Transporttische entlang der restlichen Transportstrecke, d.h. dort, wo die Transporttische nicht von den Mitnehmern der o.g. Hülltriebe transportiert werden.In the printing machine according to the invention, the drive device has an additional enveloping drive, which can be designed as a chain drive for moving the transport tables along the remaining transport path, i. where the transport tables are not from the drivers of the o.g. Hülltriebe be transported.

In einer besonders vorteilhaften und daher bevorzugten Ausführungsvariante der erfindungsgemäßen Druckmaschine sind die Transporttische als flächige Bogenhalteelemente mit einer Auflagefläche zur flächigen Auflage der zu transportierenden flächenförmigen Elemente, als sogenannte Tablets, ausgeführt. Im Bereich der Auflagefläche können Sauglöcher zum sicheren Halten eines flächenförmigen Elements auf dem Transporttisch vorgesehen sein.In a particularly advantageous and therefore preferred embodiment variant of the printing press according to the invention, the transport tables are designed as sheet-like sheet holding elements with a support surface for the flat support of the sheet-like elements to be transported, referred to as tablets. Suction holes for securely holding a sheet-like element on the transport table can be provided in the region of the support surface.

In Weiterbildung der Erfindung sind die Hülltriebe als Riemen, insbesondere als Zahnriemen ausgestaltet, deren Zähne im Eingriff mit komplementären Zähnen eines mit dem Servomotor gekoppelten Antriebsrades sind. Die Antriebsräder können dabei entweder direkt von den Servomotoren oder mittelbar über zwischengeschaltete Zahnriemen angetrieben werden.In a development of the invention, the enveloping mechanisms are designed as belts, in particular as toothed belts, whose teeth are in engagement with complementary teeth of a drive wheel coupled to the servomotor. The drive wheels can be driven either directly from the servomotors or indirectly via intermediate toothed belt.

Die Zahnriemen sind dabei insbesondere pfeilverzahnt, rundverzahnt oder schrägverzahnt ausgeführt, um den Polygoneffekt zu verringern bzw. zu vermeiden, welcher eine Schwankung der Geschwindigkeit und allgemein Schwingungen des Zahnriemens bewirkt.The toothed belts are in particular arrow-toothed, round-toothed or helical teeth designed to reduce or avoid the polygon effect, which causes a fluctuation of the speed and generally vibrations of the toothed belt.

In vorteilhafter Weiterbildung der erfindungsgemäßen Druckmaschine sind in den Transporttischen Mitnehmer vorgesehen, welche als Ausnehmungen ausgestaltet sein können, in welche die Mitnehmer der Transporttische eingreifen können, wobei es sich bei den Ausnehmungen auch um komplementär ausgeformte, an den Unterseiten der Transporttische befestigte Mitnehmer handeln kann. Schaltelemente zum Aktivieren der Mitnehmer sind bei einer derartigen Ausführungsform nicht erforderlich.In an advantageous embodiment of the printing press according to the invention carriers are provided in the transport tables, which can be configured as recesses into which the driver of the transport table can engage, which may be at the recesses also complementarily shaped, attached to the undersides of the transport table driver. Switching elements for activating the drivers are not required in such an embodiment.

In einer vorteilhaften Ausführungsvariante sind die Servomotoren als Synchronmotoren ausgeführt.In an advantageous embodiment, the servomotors are designed as synchronous motors.

Die Druckstation kann als Digitaldruckstation ausgeführt sein und insbesondere eine Mehrzahl von Inkjetköpfen besitzen.The printing station can be designed as a digital printing station and in particular have a plurality of inkjet heads.

Die beschriebene Erfindung und die beschriebenen vorteilhaften Weiterbildungen der Erfindung stellen auch in Kombination miteinander - soweit dies technisch sinnvoll ist - vorteilhafte Weiterbildungen der Erfindung dar.The invention described and the described advantageous developments of the invention are also in combination with each other - as far as is technically feasible - advantageous developments of the invention.

Hinsichtlich weiterer Vorteile und in konstruktiver und funktioneller Hinsicht vorteilhafter Ausgestaltungen der Erfindung wird auf die Unteransprüche sowie die Beschreibung von Ausführungsbeispielen unter Bezugnahme auf die beiliegenden Figuren verwiesen.With regard to further advantages and constructive and functional advantageous embodiments of the invention, reference is made to the dependent claims and the description of exemplary embodiments with reference to the accompanying figures.

Ausführungsbeispielembodiment

Die Erfindung soll an Hand beigefügter Figuren noch näher erläutert werden. Einander entsprechende Elemente und Bauteile sind in den Figuren mit gleichen Bezugszeichen versehen. Zugunsten einer besseren Übersichtlichkeit der Figuren wurde auf eine maßstabsgetreue Darstellung verzichtet.The invention will be explained in more detail with reference to attached figures. Corresponding elements and components are provided in the figures with the same reference numerals. In favor of a better clarity of the figures was waived a true to scale representation.

Es zeigen in schematischer Darstellung

Fig. 1
eine erfindungsgemäße Druckmaschine
Fig. 2
ein Detail der Antriebsvorrichtung
Fig. 3
eine Draufsicht auf die Antriebsvorrichtung mit unterschiedlichen Ausgestaltungen des Zahnriemens
It show in a schematic representation
Fig. 1
a printing press according to the invention
Fig. 2
a detail of the drive device
Fig. 3
a plan view of the drive device with different configurations of the toothed belt

Figur 1 zeigt eine erfindungsgemäße Druckmaschine 100, in der von einem Anleger 2 kommende Bogen 1000 in einer Druckstation 1 bedruckt und danach in einer Auslage 3 ausgelegt werden. Die Bogen werden im Bereich der Druckstation 1 von einem Transportsystem 9 entlang einer Transportstrecke 7 bewegt und dabei bedruckt. Während ein jeweiliger Bogen 1000 in Transportrichtung T transportiert wird, liegt er auf einem Transporttisch 4 flächig auf. Die Oberseite eines jeweiligen Bogens 1000 ist somit frei zugänglich und kann von nicht näher dargestellten Druckköpfen in der Druckstation 1 bedruckt werden. Die Transporttische 4 werden von einer Antriebsvorrichtung 5 auf einer umlaufenden Bahn bewegt. Die Antriebsvorrichtung 5 weist dazu zum einen einen Kettenantrieb 6 auf als auch von Servomotoren 11 angetriebene Zahnriemen 10 auf, wobei letztere die Transporttische 4 entlang einer sich in der Druckstation 1 befindlichen Teilstrecke 7 der Transportstrecke bewegen. Entlang der restlichen Transportstrecke 8, welche insbesondere die Rückführung der Transporttische 4 zum Anleger 2 umfasst, wird der Antrieb durch den Kettenantrieb 6 realisiert. FIG. 1 shows a printing machine 100 according to the invention, printed in the coming of a feeder 2 sheet 1000 in a printing station 1 and then laid out in a display 3. The sheets are moved in the area of the printing station 1 by a transport system 9 along a transport path 7 and thereby printed. While a respective sheet 1000 is transported in the transport direction T, it lies flat on a transport table 4. The top of each sheet 1000 is thus freely accessible and can be printed by non-illustrated printheads in the printing station 1. The transport tables 4 are moved by a drive device 5 on a revolving path. For this purpose, the drive device 5 has, for one, a chain drive 6 as well as toothed belts 10 driven by servomotors 11, the latter moving the transport tables 4 along a section 7 of the transport path located in the printing station 1. Along the remaining transport path 8, which in particular includes the return of the transport table 4 to the feeder 2, the drive is realized by the chain drive 6.

Ein jeweiliger Zahnriemen 10 wird von einem zugeordneten Servomotor 11 angetrieben. Wie in Figur 1 angedeutet, sind mehrere solcher Zahnriemen 10 und Servomotoren 11 vorgesehen. An einem jeweiligen Zahnriemen 10 sind Mitnehmer 12 angebracht, welche im Bereich der Druckstation 1 mit den Transporttischen 4 in Eingriff gebracht werden und so die Transporttische 4 bewegen. Während dem Transport der Transporttische 4 mittels der Mitnehmer 12 sind die Transporttische 4 von dem Kettenantrieb 6 entkoppelt.A respective toothed belt 10 is driven by an associated servo motor 11. As in FIG. 1 indicated, a plurality of such timing belt 10 and servomotors 11 are provided. On a respective toothed belt 10 drivers 12 are mounted, which are brought in the region of the printing station 1 with the transport tables 4 into engagement and move the transport tables 4. During transport of the transport tables 4 by means of the drivers 12, the transport tables 4 are decoupled from the chain drive 6.

In Figur 2 ist die Antriebsvorrichtung 5 in einer detaillierteren Darstellung zu erkennen. Am Anfang der Teilstrecke 7 gelangt ein Mitnehmer 12 des Zahnriemens 10 in Eingriff mit einem Mitnehmer 13, welcher an der Unterseite eines Transporttischs 4 angeordnet ist und eine zum Mitnehmer 12 komplementäre Ausnehmung aufweist. Der Vorgang des Eintauchens des Mitnehmers 12 in den Mitnehmer 13 ist durch eine gestrichelte Darstellung der Mitnehmer 12, 13 angedeutet.In FIG. 2 the drive device 5 can be seen in a more detailed representation. At the beginning of the section 7, a driver 12 of the toothed belt 10 engages with a driver 13, which is arranged on the underside of a transport table 4 and has a complementary to the driver 12 recess. The process of Dipping the driver 12 in the driver 13 is indicated by a dashed line of the driver 12, 13.

Figur 3 zeigt eine Draufsicht auf die Antriebsvorrichtung 5. Dabei ist zu erkennen, dass jedem der vier Zahnriemen 10 ein eigener Servomotor 11 zugeordnet ist. Auf einem jeweiligen Zahnriemen 10 befinden sich mehrere Mitnehmer 12, sodass während ein sich im oberen Trum des Zahnriemens 10 befindlicher Mitnehmer 12 einen Transporttisch 4 bewegt, ein sich im unteren Trum des Zahnriemens 10 befindlicher Mitnehmer 12 an den Anfang der Teilstrecke 7 bewegt wird. FIG. 3 shows a plan view of the drive device 5. It can be seen that each of the four timing belt 10 has its own servo motor 11 is assigned. On a respective toothed belt 10 are a plurality of drivers 12, so that while a located in the upper run of the belt 10 driver 12 moves a transport table 4, located in the lower run of the belt 10 driver 12 is moved to the beginning of the section 7.

Die Detaildarstellungen A, B, C zeigen eine vergrößerte Ansicht der Innenseite der Zahnriemen 10. Gemäß der Variante A ist der Zahnriemen schräg verzahnt, gemäß der Variante B pfeilverzahnt und gemäß der Variante C rundverzahnt. Die Antriebsräder 14 (vgl. Figur 2) weisen entsprechend eine komplementäre Verzahnung auf.The detailed representations A, B, C show an enlarged view of the inside of the toothed belt 10. According to the variant A, the toothed belt is helically toothed, according to the variant B arrow-toothed and round-toothed according to the variant C. The drive wheels 14 (see. FIG. 2 ) accordingly have a complementary toothing.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Druckstationprinting station
22
Anlegerinvestor
33
Auslagedisplay
44
Transporttischtransport table
55
Antriebsvorrichtungdriving device
66
Kettenantriebchain drive
77
Teilstrecke der TransportstreckePart of the transport route
88th
restliche Transportstreckeremaining transport route
99
Transportsystemtransport system
1010
Zahnriementoothed belt
1111
Servomotorservomotor
1212
Mitnehmertakeaway
1313
Ausnehmung / Mitnehmer am TischRecess / driver at the table
1414
Antriebsraddrive wheel
100100
Druckmaschinepress
10001000
Bogenbow
TT
Transportrichtungtransport direction

Claims (8)

  1. Printing machine (100) including at least one printing unit (1) for printing on flat elements, in particular sheets (1000) of paper, plastic, and cardboard, and a transport system (9) for transporting the flat elements (1000),
    wherein the transport system (9) has a plurality of transport tables (4) revolving along a closed transport path (7, 9) and a drive device (5) for moving the transport tables (4),
    and wherein the drive device (5) has revolving belt drives (10) driven by servomotors (11),
    characterized in
    that the belt drives (10) are equipped with entrainment elements (12) that temporarily engage with the transport tables (4) to move the transport tables (4) along a partial path (7) of the transport path,
    wherein only one transport table (4) is moved along this partial path (7) by a respective belt drive (10), and
    in that the partial path (7) is located at least in the region of the printing unit (1), and in that the drive device (5) additionally includes a further belt drive (6) for moving the transport tables (4) along the remaining transport path (8), in particular a chain drive.
  2. Printing machine according to claim 1,
    characterized in
    that multiple entrainment elements (12) that are spaced apart from one another are mounted to every belt drive (10).
  3. Printing machine according to any one of the preceding claims,
    characterized in
    that the transport tables (4) are designed as flat sheet-holding elements for the flat elements (1000) flatly to rest thereon in order to be transported.
  4. Printing machine according to any one of the preceding claims,
    characterized in
    that the belt drives (10) are embodied as belts, namely as timing belts.
  5. Printing machine according to claim 4,
    characterized in
    that the timing belts (10) have arrow-shaped, round or skewed teeth.
  6. Printing machine according to any one of the preceding claims,
    characterized in
    that the entrainment elements (12) engage in entrainment elements (13) in the transport tables (4).
  7. Printing machine according to any one of the preceding claims,
    characterized in
    that the servomotors (11) are embodied as synchronous motors.
  8. Printing machine according to any one of the preceding claims,
    characterized in
    that the printing unit (1) is designed as a digital printing unit and in particular includes a plurality of inkjet heads.
EP16154379.8A 2015-03-10 2016-02-05 Printing machine with transport system Not-in-force EP3067211B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015204215.4A DE102015204215A1 (en) 2015-03-10 2015-03-10 Printing machine with transport system

Publications (2)

Publication Number Publication Date
EP3067211A1 EP3067211A1 (en) 2016-09-14
EP3067211B1 true EP3067211B1 (en) 2017-10-04

Family

ID=55304915

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16154379.8A Not-in-force EP3067211B1 (en) 2015-03-10 2016-02-05 Printing machine with transport system

Country Status (3)

Country Link
EP (1) EP3067211B1 (en)
CN (1) CN105966949B (en)
DE (1) DE102015204215A1 (en)

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Publication number Priority date Publication date Assignee Title
PT3535128T (en) * 2016-11-02 2022-01-05 Tonejet Ltd Passive object handling device
BR112019009659A2 (en) * 2016-11-14 2019-09-10 Agfa Nv conveyor belt printing device
CN107297958B (en) * 2017-07-11 2023-05-09 深圳坤弘印务有限公司 Continuous printing color press
DE102018208796A1 (en) 2018-06-05 2019-12-05 Heidelberger Druckmaschinen Ag Printing machine with a transport device for transporting sheets of printing material
DE102019210251A1 (en) * 2018-08-30 2020-03-05 Heidelberger Druckmaschinen Ag Sheet conveyor for printed sheets
DE102018216029B3 (en) * 2018-09-20 2019-05-23 Heidelberger Druckmaschinen Ag Belt conveyor for printed sheets
CN114312054A (en) * 2021-12-03 2022-04-12 上海泰威技术发展股份有限公司 Metal plate digital printing turntable type platform
CN114434950A (en) * 2022-03-09 2022-05-06 四川华瓷科技有限公司 Automatic printing device

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CN2782633Y (en) * 2005-03-18 2006-05-24 宇社机械股份有限公司 Paper feeder
US20060220306A1 (en) * 2005-04-01 2006-10-05 Heidelberger Druckmaschinen Ag Method for conveying printing-material sheet by a belt conveyor, and a belt conveyor suited therefor
DE102007014876B4 (en) * 2007-03-26 2010-04-08 Kba-Metronic Aktiengesellschaft transport system
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DE102015204514A1 (en) * 2015-03-12 2015-05-07 Heidelberger Druckmaschinen Ag Sheet-fed press with concave transport table

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Also Published As

Publication number Publication date
DE102015204215A1 (en) 2016-09-15
EP3067211A1 (en) 2016-09-14
CN105966949B (en) 2018-06-05
CN105966949A (en) 2016-09-28

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