EP0568847B1 - Device for conveying sheets in a printing machine - Google Patents
Device for conveying sheets in a printing machine Download PDFInfo
- Publication number
- EP0568847B1 EP0568847B1 EP93106207A EP93106207A EP0568847B1 EP 0568847 B1 EP0568847 B1 EP 0568847B1 EP 93106207 A EP93106207 A EP 93106207A EP 93106207 A EP93106207 A EP 93106207A EP 0568847 B1 EP0568847 B1 EP 0568847B1
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- European Patent Office
- Prior art keywords
- sheet
- chain wheels
- case
- cylinder
- gear
- 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.)
- Expired - Lifetime
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- 230000001360 synchronised effect Effects 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 239000011248 coating agent Substances 0.000 abstract description 6
- 238000000576 coating method Methods 0.000 abstract description 6
- 239000002966 varnish Substances 0.000 abstract description 4
- 238000005461 lubrication Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
- B65H29/02—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles
- B65H29/04—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles the grippers being carried by endless chains or bands
- B65H29/041—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles the grippers being carried by endless chains or bands and introducing into a pile
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
- B65H29/02—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles
- B65H29/04—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles the grippers being carried by endless chains or bands
- B65H29/042—Intermediate conveyors, e.g. transferring devices
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- 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
- B65H2801/21—Industrial-size printers, e.g. rotary printing press
Definitions
- the invention relates to a device for transporting sheets within a printing press according to the preamble of claim 1.
- the sheets are each transferred between the gripper carriage and a sheet-guiding cylinder - for example the impression cylinder of a printing unit or a coating unit - in the area of the chain wheels.
- a sheet-guiding cylinder for example the impression cylinder of a printing unit or a coating unit - in the area of the chain wheels.
- the sheet is curved to a greater or lesser extent around the side that was last printed or varnished. Since there is an increasing effort to first print out the sheet completely or to apply varnish and only then to hand it over to a gripper carriage, the bow experiences a very large loop around the take-off drum on which the chain wheels are attached. The freshly printed or varnished sheet can thus be smeared on parts of these drums.
- GB-PS 972 487 has proposed a number of support rollers arranged on rods, on the partial outer circumference of which the arch is also to be supported without greasing. These can be adjusted by moving them axially to color-free areas of the print image.
- the disadvantage here is in particular that such print image-free points are not always present and, in addition, that a time-consuming adjustment of the idlers is necessary.
- a device for laying out printed sheets in a holding cylinder printing machine is known.
- the sheets are removed from a printing cylinder via gripper bars, these gripper bars running around sprockets which are larger in diameter than the printing cylinder.
- These sprockets are each driven via a coupling from a spur gear which has the same diameter as the printing cylinder and is driven by it.
- a chain boom for sheet printing machines which runs at different speeds.
- the sprockets are driven by interposed planet gears from the pressure cylinder, a carrier of the planet gears being pivoted back and forth for acceleration and deceleration through a curve which is arranged on a gear wheel disk lying in the course of the sprocket drive.
- the object of the present invention is therefore to improve a device according to the preamble of claim 1 in such a way that a lubrication-free sheet transfer is possible without great constructional complexity.
- the area between the sprockets that drive the endless chains is not designed in a conventional manner as a so-called increase or decrease drum and in particular there is no continuous shaft on which the sheet is particularly strong Lubricate the S-shaped guide.
- the invention provides that lubrication cannot be carried out at all by dispensing with a continuous shaft between the common sprockets.
- the two sprockets around which the two chains with the gripper carriages are guided in the region of the transfer of the sheets from or to a sheet-guiding cylinder are each mounted on a stub shaft on one side wall of the printing press.
- Each stub shaft has a gear outside the side wall of the printing press, which meshes, for example, with a gear connected to the sheet-guiding cylinder.
- the pitch circle diameters of the two pairs of gears are adapted to the required peripheral speed of the gripper carriage when taking over / transferring the sheet.
- the rotation of the two is thus synchronized Sprockets each have a gear which is attached to both sides of the sheet-guiding cylinder.
- an additional shaft can alternatively be provided extending from one side wall of the printing press to the other, each having a gearwheel at its ends, which meshes with the corresponding gearwheel of the stub shafts of the chain wheels.
- This shaft extending between the side walls can be arranged in such a way that the sheets cannot smear on it.
- the device according to the invention can not only serve as a replacement for a conventional take-up drum, through which a printed sheet is conveyed from an impression cylinder to the delivery stack, but of course also as a replacement for a conventional feed drum, for example for feeding sheets to a coating unit. If special measures with regard to a play-free synchronization of the rotary movements of the two sprockets (play-free toothing) are provided, the device according to the invention can also be used as a corresponding accessory.
- Acceptance drum are used in the gripper carriage systems, which transport the sheets between the individual printing units in printing presses, for example in a five-cylinder construction. There are also additional devices on the chain wheels to guide the gripper carts precisely when registering the sheet (catch forks or similar).
- FIG. 2 shows a sheet-guiding cylinder 1, which can be, for example, the impression cylinder of a coating unit or a printing unit.
- This sheet-guiding cylinder 1 has a double-large diameter and interacts with a corresponding blanket cylinder 2, which is, for example, the forme cylinder of the coating unit.
- the sheets to be painted in this painting unit which is only shown schematically, are fed to the sheet-guiding cylinder 1 via gripper carriages 3, which are articulated on endlessly rotating chains 4.
- the chains 4 are guided around a pair of chain wheels 5, which also serve to drive the chains 4.
- the transfer of a sheet from the gripper carriage 3 to the sheet-guiding cylinder 1 (this has a number of gripper systems according to its diameter) thus takes place in the area of the chain wheels 5.
- the sheet which is transferred to the sheet-guiding cylinder 1 is thus given an imprint or varnish application by the blanket cylinder 2 and after complete printing or after complete varnish application is in turn handed over to a gripper carriage 6 which is also articulated between two endless chains 7 which are driven by chain wheels 8.
- the pair of sprockets 5 thus acts, as is known from the prior art, as a feed drum, and the pair of sprockets 8 accordingly acts as a removal drum.
- the chains 4, 7 and / or the gripper carriages 3, 6 are guided in a manner known per se through guides fixed to the frame, but this is not shown in FIGS. 1 and 2.
- FIG. 1 shows the area of the sheet removal according to FIG. 2 again in a top view.
- the sheet-guiding cylinder 1 is via a pin 9 in the two side frame walls 10 of the printing press stored.
- the sprockets 8 around which the two chains 7 run in the area of the sheet take-off are each mounted on a pair of mutually aligned stub shafts 11, which in turn are rotatably mounted in a side frame wall 10 of the printing press.
- a gear wheel 12 is attached to each stub shaft 11, which meshes with a gear wheel 13 according to this exemplary embodiment of the invention, which gear wheel is attached to the two pins 9 of the arc-guiding cylinder 1.
- the rotation of the chainwheels 5, 8 can of course also be synchronized by a separate shaft 14.
- This is indicated in dashed lines in FIG. 1 and extends between the two side frame walls 10 of the printing press.
- the shaft 14 is rotatably mounted in the side frame walls 10. At both ends, this shaft 14 has a gear wheel 15 (also shown in dashed lines), which meshes with the gear wheels 12 of the stub shafts 11.
- the rotation of the pair of sprockets 8 is synchronized via the shaft 14 and the gear pairs 12, 15.
- the arc-guiding cylinder 1 then has a gear 13 only on a pin 9, which meshes with a gear 12 of a sprocket.
- a possible location for the arrangement of the shaft 14 is shown in dashed lines in FIG.
- the stub shaft 11 is larger than the width of the largest sheet to be processed in the printing press.
- a sheet removed from the sheet-guiding cylinder 1 via the gripper carriage 6 can therefore not lubricate any part between the chain wheels 8 despite a strongly S-shaped movement (cf. FIG. 2).
- the chain wheels have single-large diameters (based on the blanket cylinder 2 or the forme cylinder defining the maximum printing format).
- the device according to the invention can also be used as a replacement for double or multiple-size feed or removal drums.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Discharge By Other Means (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zum Transport von Bogen innerhalb einer Druckmaschine gemäß dem Oberbegriff von Anspruch 1.The invention relates to a device for transporting sheets within a printing press according to the preamble of
Aus dem Bereich des Bogendruckmaschinenbaues ist es bekannt, die Bogen mittels Greiferwagen sowie daran angebrachter Greifer und Greiferauflagen zu transportieren, wobei die Greiferwagen an einem Paar endloser, durch Kettenräder angetriebene Ketten angelenkt sind. Diese Greiferwagen transportieren die Bogen zwischen den verschiedenen Komponenten der Druckmaschine. Ein derartiger Transport kann somit zwischen den einzelnen Druckwerken und insbesondere zwischen dem letzten Druckwerk und der Bogenablage eines Auslegerstapels erfolgen. Auch ist es bekannt, die Bogen von dem letzten Druckwerk zu einer Lackiereinheit (mit oder ohne Widerdruckwerk) und von diesem dann zur Bogenablage des Auslegers zu transportieren. Die Kettenräder sind hierbei auf einer gemeinsamen durchgehenden Welle angebracht, die über ein Zahnradpaar vom bogenführenden Zylinder her angetrieben wird.From the field of sheet-fed printing press construction, it is known to transport the sheets by means of gripper carriages as well as grippers and gripper supports attached thereto, the gripper carriages being articulated on a pair of endless chains driven by chain wheels. These gripper carriages transport the sheets between the various components of the printing press. Such transport can thus take place between the individual printing units and in particular between the last printing unit and the sheet deposit of a delivery stack. It is also known to transport the sheets from the last printing unit to a coating unit (with or without an impression unit) and from there to the sheet deposit of the delivery. The sprockets are mounted on a common continuous shaft which is driven by a gear pair from the arc-guiding cylinder.
Bei den oben kurz umrissenen Einrichtungen erfolgt jeweils eine Übergabe der Bögen zwischen den Greiferwagen und einem bogenführenden Zylinder - beispielsweise dem Gegendruckzylinder eines Druckwerkes oder einer Lackiereinheit - im Bereich der Kettenräder. Es erfolgt nach der Übergabe eines Bogens an einen Greiferwagen eine mehr oder weniger starke Krümmung des Bogens um eben die Seite, die zuletzt bedruckt bzw. lackiert wurde. Da zunehmend angestrebt wird, den Bogen erst vollständig auszudrucken bzw. mit Lackauftrag zu versehen, und diesen erst dann an einen Greiferwagen zu übergeben, erfährt der Bogen zum Teil eine sehr große Umschlingung um die Abnahmetrommel, auf der die Kettenräder angebracht sind. Es kann somit zum Abschmieren des frisch bedruckten bzw. lackierten Bogens an Teilen dieser Trommeln kommen.In the devices briefly outlined above, the sheets are each transferred between the gripper carriage and a sheet-guiding cylinder - for example the impression cylinder of a printing unit or a coating unit - in the area of the chain wheels. After the transfer of a sheet to a gripper carriage, the sheet is curved to a greater or lesser extent around the side that was last printed or varnished. Since there is an increasing effort to first print out the sheet completely or to apply varnish and only then to hand it over to a gripper carriage, the bow experiences a very large loop around the take-off drum on which the chain wheels are attached. The freshly printed or varnished sheet can thus be smeared on parts of these drums.
Aus dem Stand der Technik sind eine Vielzahl von Zu- bzw. Abnahmetrommeln der hier zur Rede stehenden Art bekannt geworden, die an ihrem Außenumfang spezielle Einrichtungen tragen, um eben dieses Abschmieren zu verhindern. Beispielsweise sei die Bogenführungstrommel der DE 3 930 747 C2 genannt, die an ihrem Außenumfang dicht nebeneinander über die Breite des maximalen Bogenformates eine Vielzahl kleiner Rundbürsten drehbar angeordnet aufweist. An den Borsten dieser Rundbürsten soll sich der Bogen abschmierfrei abstützen können. Ähnliches hat bereits die US-PS 3 054 348 vorgeschlagen, wobei hier anstelle von drehbar angeordneten Rundbürsten auf der Trommelachse angeordnete Bürstenkränze Verwendung finden. Anstelle von Bürsten bzw. Bürstenkränzen hat die GB-PS 972 487 eine Anzahl von auf Stäben angeordneter Tragrollen vorgeschlagen, auf deren teilweisen Außenumfang sich der Bogen ebenfalls abschmierfrei abstützen soll. Diese sind durch axiales Verschieben auf farbfreie Stellen des Druckbildes einstellbar. Nachteilig ist hierbei insbesondere, daß solche druckbildfreie Stellen nicht immer vorhanden sind und zusätzlich, daß ein zeitaufwendiges Einstellen der Tragrollen nötig ist.A large number of increase and decrease drums of the type in question have become known from the prior art, which have special devices on their outer circumference in order to prevent this lubrication. For example, the sheet guide drum of
Nachteilig bei diesen vorbekannten Einrichtungen ist insgesamt, daß eine abschmierfreie Bogenführung trotz des zum Teil großen bautechnischen Aufwandes nicht immer gegeben ist.The disadvantage of these previously known devices is overall that a lubrication-free sheet guide is not always given despite the sometimes great structural outlay.
Sehr gute Ergebnisse hinsichtlich der abschmierfreien Bogenführung hat in der Praxis der Einsatz von sogenannten Luftkissentrommeln gebracht, die beispielsweise aus der DE-PS 1 561 043 bzw. der DE 3 827 071 C2 bekannt sind. Gerade bei kleinformatigen Druckmaschinen sind diese Einrichtungen aber wegen der sehr kostenintensiven Zusatzeinrichtungen aus wirtschaftlichen Gründen nicht einsetzbar.In practice, the use of so-called air cushion drums, which are known, for example, from DE-PS 1 561 043 and DE 3 827 071 C2, has brought very good results with regard to the lubrication-free sheet guidance. Especially in the case of small-format printing machines, these devices cannot be used for economic reasons because of the very cost-intensive additional devices.
Aus der FR-A-1 426 449 ist eine Vorrichtung zum Auslegen von bedruckten Bogen bei einer Haltzylinderdruckmaschine bekannt. Die Bogen werden hier über Greiferstangen von einem Druckzylinder abgenommen, wobei diese Greiferstangen um Kettenräder laufen, welche im Durchmesser größer sind als der Druckzylinder. Diese Kettenräder werden über je eine Koppel von einem Stirnrad her getrieben, welches den gleichen Durchmesser wie der Druckzylinder aufweist und von diesem getrieben wird.From FR-A-1 426 449 a device for laying out printed sheets in a holding cylinder printing machine is known. The sheets are removed from a printing cylinder via gripper bars, these gripper bars running around sprockets which are larger in diameter than the printing cylinder. These sprockets are each driven via a coupling from a spur gear which has the same diameter as the printing cylinder and is driven by it.
Aus der US-A-2 730 363 ist ein Kettenausleger für Bogendruckmaschinen bekannt, welcher mit unterschiedlicher Geschwindigkeit läuft. Dazu werden die Kettenräder durch zwischengeschaltete Planetenräder vom Druckzylinder her getrieben, wobei ein Träger der Planetenräder zur Beschleunigung und Verzögerung durch eine Kurve hin- und hergeschwenkt wird, welche auf einer im Zuge des Kettenradantriebes liegenden Zahnradscheibe angeordnet ist.From US-A-2 730 363 a chain boom for sheet printing machines is known which runs at different speeds. For this purpose, the sprockets are driven by interposed planet gears from the pressure cylinder, a carrier of the planet gears being pivoted back and forth for acceleration and deceleration through a curve which is arranged on a gear wheel disk lying in the course of the sprocket drive.
Aus der US-A-2 620 033 ist ein Bogenauslegersystem bekannt, welches an umlaufenden Ketten angelenkte Greifersysteme aufweist. Es handelt sich hierbei jedoch nicht um ein Kettensystem, welches von einem bogenführenden Zylinder angetrieben wird.From US-A-2 620 033 a sheet delivery system is known which has gripper systems articulated on revolving chains. However, this is not a chain system that is driven by an arc-guiding cylinder.
Aufgabe der vorliegenden Erfindung ist es somit, eine Vorrichtung gemäß dem Oberbegriff von Anspruch 1 derartig zu verbessern, so daß ohne großen bautechnischen Aufwand eine abschmierfreie Bogenübergabe möglich ist.The object of the present invention is therefore to improve a device according to the preamble of
Gelöst wird diese Aufgabe durch Anwendung der kennzeichnenden Merkmale von Anspruch 1. Vorteilhafte Heiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.This object is achieved by applying the characterizing features of
Nach der Erfindung ist somit vorgesehen, daß der Bereich zwischen den Kettenrädern, welche die endlosen Ketten antreiben, nicht in herkömmlicher Weise als sogenannte Zu- bzw. Abnahmetrommel ausgebildet ist und insbesondere keine durchgehende Welle vorhanden ist, an der die Bogen gerade bei einer sehr stark s-förmigen Führung abschmieren können.According to the invention it is thus provided that the area between the sprockets that drive the endless chains is not designed in a conventional manner as a so-called increase or decrease drum and in particular there is no continuous shaft on which the sheet is particularly strong Lubricate the S-shaped guide.
Anstelle eines Trommelkörpers zwischen den Kettenrädern mit irgendeinem abschmierfreien Material an dessen Außenumfang oder sonstigen Einrichtungen, welche ein abschmierfreies Tragen des Bogens ermöglichen sollen, sieht die Erfindung vor, daß durch den Verzicht auf eine durchgehende Welle zwischen den gemeinsamen Kettenrädern ein Abschmieren überhaupt nicht erfolgen kann.Instead of a drum body between the sprockets with any lubrication-free material on its outer circumference or other devices which are intended to enable the bow to be carried without lubrication, the invention provides that lubrication cannot be carried out at all by dispensing with a continuous shaft between the common sprockets.
Die beiden Kettenräder, um welche die beiden Ketten mit den Greiferwagen im Bereich der Übergabe der Bögen von bzw. zu einem bogenführenden Zylinder geführt sind, sind jeweils an einem Wellenstumpf an je einer Seitenwand der Druckmaschine gelagert. Jeder Wellenstumpf weist außerhalb der Seitenwand der Druckmaschine ein Zahnrad auf, welches beispielsweise mit je einem mit dem bogenführenden Zylinder verbundenen Zahnrad kämmt. Die Teilkreisdurchmesser der beiden Zahnradpaare sind dabei an die nötige Umfangsgeschwindigkeit der Greiferwagen bei der Bogenübernahme/Bogenübergabe angepaßt. Somit erfolgt die Synchronisierung der Drehbewegung der beiden Kettenräder über je ein Zahnrad, welches an beiden Seiten des bogenführenden Zylinders angebracht ist.The two sprockets around which the two chains with the gripper carriages are guided in the region of the transfer of the sheets from or to a sheet-guiding cylinder are each mounted on a stub shaft on one side wall of the printing press. Each stub shaft has a gear outside the side wall of the printing press, which meshes, for example, with a gear connected to the sheet-guiding cylinder. The pitch circle diameters of the two pairs of gears are adapted to the required peripheral speed of the gripper carriage when taking over / transferring the sheet. The rotation of the two is thus synchronized Sprockets each have a gear which is attached to both sides of the sheet-guiding cylinder.
Anstelle der beidseitigen Anbringung von Zahnrädern an dem bogenführenden Zylinder kann alternativ hierzu eine zusätzliche Welle von einer Seitenwand der Druckmaschine zur anderen sich erstreckend vorgesehen sein, die jeweils an ihren Enden ein Zahnrad aufweist, welches mit dem entsprechenden Zahnrad der Wellenstümpfe der Kettenräder kämmt. Diese sich zwischen den Seitenwänden erstreckende Welle kann dabei derart angeordnet sein, so daß die Bogen an dieser nicht abschmieren können.Instead of the two-sided attachment of gearwheels to the sheet-guiding cylinder, an additional shaft can alternatively be provided extending from one side wall of the printing press to the other, each having a gearwheel at its ends, which meshes with the corresponding gearwheel of the stub shafts of the chain wheels. This shaft extending between the side walls can be arranged in such a way that the sheets cannot smear on it.
Die erfindungsgemäße Vorrichtung kann nicht nur als Ersatz für eine herkömmliche Abnahmetrommel dienen, durch welche ein bedruckter Bogen von einem Gegendruckzylinder zu dem Auslegerstapel gefördert wird, sondern selbstverständlich auch als Ersatz einer herkömmlichen Zuführtrommel, beispielsweise für die Zuführung von Bogen zu einer Lackiereinheit, verwendet werden. Wenn spezielle Maßnahmen hinsichtlich einer spielfreien Synchronisierung der Drehbewegungen der beiden Kettenräder (spielfreie Verzahnung) vorgesehen werden, kann die erfindungsgemäße Vorrichtung auch als entsprechende Zubzw. Abnahmetrommel bei den Greiferwagensystemen Verwendung finden, welche die Bogen zwischen den einzelnen Druckwerken bei Druckmaschinen beispielsweise in Fünfzylinderbauweise transportieren. An den Kettenrädern befinden sich dann noch zusätzlich Einrichtungen, um die Greiferwagen bei der Bogenübernahme registergenau zu führen (Fanggabeln o.ä.).The device according to the invention can not only serve as a replacement for a conventional take-up drum, through which a printed sheet is conveyed from an impression cylinder to the delivery stack, but of course also as a replacement for a conventional feed drum, for example for feeding sheets to a coating unit. If special measures with regard to a play-free synchronization of the rotary movements of the two sprockets (play-free toothing) are provided, the device according to the invention can also be used as a corresponding accessory. Acceptance drum are used in the gripper carriage systems, which transport the sheets between the individual printing units in printing presses, for example in a five-cylinder construction. There are also additional devices on the chain wheels to guide the gripper carts precisely when registering the sheet (catch forks or similar).
Desweiteren erfolgt die Erläuterung eines Ausführungsbeispiels der Erfindung anhand der Zeichnung.Furthermore, an embodiment of the invention is explained with reference to the drawing.
Es zeigt:
- Fig. 1
- eine Draufsicht auf eine erfindungsgemäße Vorrichtung,
- Fig. 2
- das Schema einer Lackiereinheit mit einer erfindungsgemäßen Bogenzu- und -abförderung.
- Fig. 1
- a plan view of a device according to the invention,
- Fig. 2
- the scheme of a painting unit with a sheet feeding and removal according to the invention.
Fig.2 zeigt einen bogenführenden Zylinder 1, der beispielsweise der Gegendruckzylinder einer Lackiereinheit oder eines Druckwerkes sein kann. Dieser bogenführende Zylinder 1 weist doppeltgroßen Durchmesser auf und wirkt mit einem entsprechenden Gummituchzylinder 2 zusammen, der beispielsweise der Formzylinder der Lackiereinheit ist.2 shows a sheet-guiding
Die in dieser nur schematisch dargestellten Lackiereinheit zu lackierenden Bogen werden über Greiferwagen 3 die an endlos umlaufenden Ketten 4 angelenkt sind, dem bogenführenden Zylinder 1 zugeführt. Die Ketten 4 sind um je ein Paar von Kettenrädern 5 geführt, welche auch dem Antrieb der Ketten 4 dienen. Die Übergabe eines Bogens vom Greiferwagen 3 zum bogenführenden Zylinder 1 (dieser weist entsprechend seinem Durchmesser eine Anzahl von Greifersystemen auf) erfolgt also im Bereich der Kettenräder 5. Der an den bogenführenden Zylinder 1 übergebende Bogen erhält somit durch den Gummituchzylinder 2 einen Aufdruck bzw. Lackauftrag und wird nach vollständigem Bedrucken bzw. nach vollständigem Lackauftrag an wiederum einen Greiferwagen 6 übergeben, der ebenfalls zwischen zwei endlos umlaufenden Ketten 7, die über Kettenräder 8 angetrieben werden, angelenkt ist. Das Paar der Kettenräder 5 wirkt somit, wie aus dem Stand der Technik bekannt, als Zuführtrommel, das Paar der Kettenräder 8 entsprechend als Abnahmetrommel. Die Ketten 4, 7 und/oder die Greiferwagen 3, 6 werden in an sich bekannter Weise durch gestellfeste Führungen geführt, was aber in den Fig.1 und 2 nicht dargestellt ist.The sheets to be painted in this painting unit, which is only shown schematically, are fed to the sheet-guiding
Fig.1 zeigt den Bereich der Bogenabnahme gemäß Fig. 2 noch einmal in Draufsicht. Der bogenführende Zylinder 1 ist über je einen Zapfen 9 in den beiden Seitengestellwänden 10 der Druckmaschine gelagert. Die Kettenräder 8 um welche die beiden Ketten 7 im Bereich der Bogenabnahme laufen, sind jeweils auf einem Paar miteinander fluchtender Wellenstümpfe 11 angebracht, die ihrerseits drehbar in je einer Seitengestellwand 10 der Druckmaschine gelagert sind. An dem anderen Ende ist an jedem Wellenstumpf 11 ein Zahnrad 12 angebracht, das gemäß diesem Ausführungsbeispiel der Erfindung mit je einem Zahnrad 13 kämmt, welches an den beiden Zapfen 9 des bogenführenden Zylinders 1 angebracht ist.1 shows the area of the sheet removal according to FIG. 2 again in a top view. The sheet-guiding
Die Synchronisierung der Drehbewegung der beiden der Kettenräder 8 erfolgt somit über die beiden Zahnradpaare 12, 13 von beiden Seiten des bogenführenden Zylinders 1 her. Es sei hier nur kurz erwähnt, daß selbstverständlich die Zahnräder 12, 13 in einem Durchmesserverhältnis stehen, die sich aus der Bedingung ergibt, daß die Greiferwagen 3, 6 bei der Bogenübergabe bzw. der Bogenübernahme die gleiche Umfangsgeschwindigkeit wie das Greifersystem des bogenführenden Zylinders 1 haben muß.The synchronization of the rotational movement of the two of the
Anstelle über zwei an beiden Enden der Zapfen 9 des bogenführenden Zylinders 1 angebrachte Zahnräder 13 kann selbstverständlich eine Synchronisierung der Drehbewegung der Kettenräder 5, 8 auch durch eine gesonderte Welle 14 erfolgen. Diese ist in Fig. 1 gestrichelt angedeutet und erstreckt sich zwischen den beiden Seitengestellwänden 10 der Druckmaschine. In den Seitengestellwänden 10 ist die Welle 14 drehbar gelagert. An beiden Enden weist diese Welle 14 jeweils ein Zahnrad 15 auf (ebenfalls gestrichelt dargestellt), welches mit den Zahnrädern 12 der Wellenstümpfe 11 kämmt. Hier erfolgt somit die Synchronisierung der Drehbewegung des Paares der Kettenräder 8 über die Welle 14 sowie die Zahnradpaare 12, 15. Der bogenführende Zylinder 1 weist dann nur an einem Zapfen 9 ein Zahnrad 13 auf, welches mit einem Zahnrad 12 eines Kettenrades kämmt. In Fig.2 ist ein möglicher Ort für die Anordnung der Welle 14 gestrichelt dargestellt.Instead of two
Der Abstand der in Fig.1 stirnseitig sich gegenüberliegenden Enden der Wellenstümpfe 11 ist erfindungsgemäß größer als die Breite des großten in der Druckmaschine zu verarbeitenden Bogens. Ein vom bogenführenden Zylinder 1 über den Greiferwagen 6 abgenommener Bogen kann somit trotz einer stark s-förmigen Bewegung an keinem Teil zwischen den Kettenrädern 8 abschmieren (vgl. Fig. 2).The distance between the ends opposite each other in FIG. 1 According to the invention, the
Im bisher beschriebenen Ausführungsbeispiel weisen die Kettenräder einfachgroßen Durchmesser (bezogen auf den Gummituchzylinder 2 bzw. den das maximale Druckformat definierenden Formzylinder) auf. Selbstverständlich kann die erfindungsgemäße Vorrichtung auch als Ersatz für doppelt oder mehrfachgroße Zuführ- oder Abnahmetrommeln verwendet werden.In the exemplary embodiment described so far, the chain wheels have single-large diameters (based on the
- 11
- bogenführender Zylinderbow-guiding cylinder
- 22nd
- GummituchzylinderBlanket cylinder
- 33rd
- GreiferwagenGrab car
- 44th
- KetteChain
- 55
- KettenradSprocket
- 66
- GreiferwagenGrab car
- 77
- KetteChain
- 88th
- KettenradSprocket
- 99
- Zapfen (bogenführender Zylinder 1)Pin (sheet-guiding cylinder 1)
- 1010th
- SeitengestellwandSide frame wall
- 1111
- WellenstumpfWave stump
- 1212th
- Zahnradgear
- 1313
- ""
- 1414
- Wellewave
- 1515
- Zahnradgear
Claims (4)
- Device for transport of sheets within a printing press in which the sheet is forwarded by gripper carriages (3, 6) which are linked to endless chains (4, 7) driven by chain wheels (5, 8) and a transfer of the sheet between the gripper carriages (3, 6) and a neighbouring sheet guiding cylinder (1), to which a forme cylinder (2) is arranged, takes place in the region of chain wheels (5, 8) characterised in that chain wheels (5, 8) are arranged each on one end of two stub axles (11) mounted matching with one another and in each case in a side frame wall (10), to the other end of which is fixed in each case a gear (12) and that for synchronous running of the chain wheels (5, 8) each gear (12) is engaged in each case with a gear (13, 15) driven from the sheet guiding cylinder (1).
- Device according to Claim 1, characterised in that parallel to the axis of the stub axles (11), a shaft (14) is arranged extending between the side frame walls (10) and mounted rotatably in these, which has on its ends in each case a gear (15) which meshes in each case with a gear (12) of the stub axle (11).
- Device according to Claim 1 or 2, characterised in that the chain wheels (5) and the stub axles (11) carrying the gears (12) are arranged upstream of the sheet guiding cylinder (1) in the sheet running direction.
- Device according to Claim 1 or 2, characterised in that the chain wheels (8) and the stub axles (11) carrying the gears (12) are arranged downstream in the sheet running direction relative to the sheet guiding cylinder (1).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4214604A DE4214604A1 (en) | 1992-05-08 | 1992-05-08 | Device for transporting sheets within a printing machine |
| DE4214604 | 1992-05-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0568847A1 EP0568847A1 (en) | 1993-11-10 |
| EP0568847B1 true EP0568847B1 (en) | 1996-06-19 |
Family
ID=6458055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93106207A Expired - Lifetime EP0568847B1 (en) | 1992-05-08 | 1993-04-16 | Device for conveying sheets in a printing machine |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5341738A (en) |
| EP (1) | EP0568847B1 (en) |
| JP (1) | JPH0623950A (en) |
| AT (1) | ATE139480T1 (en) |
| DE (2) | DE4214604A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100219601B1 (en) * | 1996-05-15 | 1999-09-01 | 윤종용 | Ohp print face sensing device of heat transfer printer and method thereof |
| DE10142544B4 (en) * | 2000-09-15 | 2010-05-27 | Heidelberger Druckmaschinen Ag | Gear transmission stage with tensioning moment |
| CN107984894B (en) * | 2017-11-27 | 2019-09-24 | 安徽颍美科技股份有限公司 | A kind of color press and the shaftless synchronizing device of drying oven |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1597941A (en) * | 1922-04-18 | 1926-08-31 | White Maria Louisa | Sheet feeder for printing presses |
| US1999587A (en) * | 1931-07-18 | 1935-04-30 | David M Davis | Conveyer mechanism |
| US1997290A (en) * | 1934-03-03 | 1935-04-09 | Cottrell C B & Sons Co | Sheet delivery mechanism for printing presses |
| US2620033A (en) * | 1946-05-27 | 1952-12-02 | Harris Seybold Co | Sheet delivery mechanism |
| DE863808C (en) * | 1950-05-20 | 1953-01-19 | Maschf Augsburg Nuernberg Ag | Chain boom for sheet-fed printing machines |
| US2940387A (en) * | 1958-08-21 | 1960-06-14 | Harris Intertype Corp | Sheet delivery means for rotary printing press |
| US3054348A (en) * | 1959-08-19 | 1962-09-18 | Edgar C Gutweniger | Skeleton roll printing press |
| CH392564A (en) * | 1961-09-26 | 1965-05-31 | Color Metal Ag | Transfer drum for rotary printing machines |
| FR1426449A (en) * | 1965-01-22 | 1966-01-28 | Druckmaschinenwerk Victoria Ve | Device for lifting printed sheets on high speed presses, in particular machines with stop cylinders |
| US3662496A (en) * | 1969-05-27 | 1972-05-16 | Terry Lewis | Apparatus for the vibratory finishing of workpieces |
| US4443094A (en) * | 1982-11-22 | 1984-04-17 | Am International, Inc. | Duplicating machine with duplexing capability |
| DD255703A1 (en) * | 1986-10-31 | 1988-04-13 | Polygraph Leipzig | DEVICE FOR CLAMPING CHAINS IN PRESSURE MACHINES |
| DE3827071A1 (en) * | 1988-08-10 | 1990-02-15 | Roland Man Druckmasch | AIR PILLOW DRUM FOR BOW PRINTING MACHINES |
| DE3930747A1 (en) * | 1989-09-14 | 1991-03-28 | Roland Man Druckmasch | ARCH GUIDE DRUM IN ROTARY PRINTING MACHINES |
| US5150652A (en) * | 1991-03-11 | 1992-09-29 | Fuji Kikai Kogyo Kabushiki Kaisha | Device for pushing printing material for use in a printing apparatus |
-
1992
- 1992-05-08 DE DE4214604A patent/DE4214604A1/en not_active Withdrawn
-
1993
- 1993-04-16 AT AT93106207T patent/ATE139480T1/en active
- 1993-04-16 DE DE59302980T patent/DE59302980D1/en not_active Expired - Fee Related
- 1993-04-16 EP EP93106207A patent/EP0568847B1/en not_active Expired - Lifetime
- 1993-04-28 US US08/055,225 patent/US5341738A/en not_active Expired - Fee Related
- 1993-05-06 JP JP5105343A patent/JPH0623950A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE59302980D1 (en) | 1996-07-25 |
| ATE139480T1 (en) | 1996-07-15 |
| JPH0623950A (en) | 1994-02-01 |
| US5341738A (en) | 1994-08-30 |
| EP0568847A1 (en) | 1993-11-10 |
| DE4214604A1 (en) | 1993-11-11 |
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