EP0225455A2 - Delivery device for a sheet-fed rotary printing machine - Google Patents

Delivery device for a sheet-fed rotary printing machine Download PDF

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Publication number
EP0225455A2
EP0225455A2 EP86114659A EP86114659A EP0225455A2 EP 0225455 A2 EP0225455 A2 EP 0225455A2 EP 86114659 A EP86114659 A EP 86114659A EP 86114659 A EP86114659 A EP 86114659A EP 0225455 A2 EP0225455 A2 EP 0225455A2
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EP
European Patent Office
Prior art keywords
roller
sheet
speed
delivery device
suction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP86114659A
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German (de)
French (fr)
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EP0225455B1 (en
EP0225455A3 (en
Inventor
Albrecht Josef Germann
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Koenig and Bauer AG
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Koenig and Bauer AG
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Publication date
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Publication of EP0225455A2 publication Critical patent/EP0225455A2/en
Publication of EP0225455A3 publication Critical patent/EP0225455A3/en
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Publication of EP0225455B1 publication Critical patent/EP0225455B1/en
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Classifications

    • 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
    • B65H29/68—Reducing the speed of articles as they advance
    • B65H29/683—Slowing-down from chain delivery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means

Definitions

  • the invention relates to a suction roll used as a sheet brake according to the preamble of patent claim 1.
  • Bow brakes are e.g. made known by DE-PS 721 545. It consists of a plurality of absorbent bodies, the circumferential speed of which when the sheet is taken over is approximately the same as the conveying speed of the gripper chain and decreases continuously from the absorbent body until the moment the sheet end is left.
  • the invention has for its object to provide a sheet brake in a sheet delivery device of a sheet-fed rotary printing press, which can also be used in a perfecting sheet-fed rotary printing press without the sheet brake smearing the freshly printed page.
  • a suction roll 1 is rotatably mounted in a known manner.
  • the suction roll 1 is driven by means of a speed-controllable direct current motor 2.
  • the suction roll 1 has an ink-repellent, for example, chrome-plated outer surface 3.
  • the suction roll 1 is equipped with suction holes 4, which penetrate the suction roll 1 radially.
  • the suction holes 4 are arranged starting from a center of the suction roll 1 on a right-hand or left-hand screw line. Beneath the suction roller 1, a suction bar 5, which can be acted upon by suction air and sealed against the suction roller 1, is mounted between the side frames.
  • a dampening unit 6 known per se is employed on the suction roller 1, which comprises a dampening unit 7, a chrome-coated ductor roller 8 and a rubber-coated application roller 9.
  • the ductor roller 8 and the application roller 9 are driven by the suction roller 1 via gears (not shown) such that a relative speed is generated between the suction roller 1 and the application roller 9, or the application roller 9 and the ductor roller 8, preferably the peripheral speed of the application roller 9 is smaller than the peripheral speed of the suction roller 1.
  • FIG. 3 shows a sheet delivery device in which a moist wiper belt 11 is pressed onto the suction roller 1 described above by means of a pressure bar 12.
  • the wiper belt 11 is wound on a spool 13 and is gradually pulled past the direction of rotation of the suction roller 1 via a driven winding spool 14.
  • FIG. 4 shows a second variant of the arrangement described in FIG. 3, in which the wiper belt 11 is pulled between the suction roller 1 and the suction bar 5, so that the pressure bar 12 can be omitted.
  • a rotating roller 16 placed against the suction roller 1 with a textile cover 15 e.g. Moltex can be used.
  • the textile cover 15 is preferably moistened in cycles by means of spray nozzles 17.
  • the devices for dampening and cleaning the suction roller 1 described above are each mounted below a sheet guide plate 18 in tabs 19 which are fastened to the sheet guide plate 18.
  • the sheet guide plate 18 is preferably pivotable upwards, so that the devices for dampening and cleaning (6, 11, 16) are easily accessible.
  • a dirt trough 23 is attached to a two-part cross member 21, 22 fixed to the frame.
  • the crossbeam 21, 22 also serves to receive the spray nozzles 17.
  • FIG. 6 shows a speed curve of a peripheral speed v s of the suction roll 1 in a time-speed diagram.
  • a delivery speed v a of the sheets and a speed range v k of the gripper chain speed are shown in the diagram.
  • the speed range v k is limited by a maximum gripper chain speed v k max and a minimum gripper chain speed v k min .
  • a (inclination) denotes a range of the peripheral speed v s of the suction roll 1 in which the suction roll 1 experiences a deceleration.
  • the inclination a is independent of the hook chain speed v k .
  • the peripheral speed v are each s and the design speed v s is equal.
  • P is a gripper opening time.
  • the sheets 24 printed on face and reverse printing are each transported to a stacking table 32 by means of gripper carriages 28 attached to gripper chains 27, the gripper carriages 28 having controllable rows of grippers 29.
  • the suction roll initial speed v s is in each case equal to the gripper chain speed v k .
  • the grippers 29 are opened by means of an adjustable gripper control curve, not shown, which is known per se, before a front edge 33 of the sheets 24 reaches a stop 24 of the stacking table 32.
  • the sheet 24 becomes free and floats up to the stop 34.
  • the suction roller 1 is braked by means of the direct current motor 2 until its peripheral speed v s is equal to the constant design speed v a (eg 10% of the maximum gripper chain speed v k max .
  • the sheets 24 are decelerated to their constant laying speed v a .
  • a thyristor set a tacho generator (setpoint generator) coupled to the main drive of the sheet-fed rotary printing press, a tacho generator (actual setpoint generator) coupled to the direct current motor 2 and electronic setpoint formers are provided to regulate the speed of the DC motor 2.
  • the control described above keeps the peripheral speed v s of the suction roller 1 equal to the gripper chain speed v k . If the grippers 29 open, the speed setpoint becomes the same Current motor 2 from the setpoint generator "tachogenerator" to the setpoint generator “setpoint generator”. In accordance with the impressed target values of the target value generator, the peripheral speed v s of the roller 1 is continuously reduced until it has reached the peripheral speed v a .
  • the suction roller 1 has coupled a tachometer generator as the actual value transmitter.
  • the control device for the direct current motor 2 has a setpoint input unit.
  • the suction roller 1 is accelerated again by the direct current motor 2 until the peripheral speed v s of the suction roller 1 is equal to the speed v k of the gripper chains 27.
  • the roller 1 must have reached the speed v s again before the next sheet 24 arrives at the suction roller 1.
  • the hydrophilic, chrome-plated outer surface 3 of the suction roller 1 is damply cleaned of adhering ink particles by the above-described devices (6, 11, 16), so that no ink particles have a printed underside 36 of the Bow 24 are pulled away.
  • An adjustable gripper control curve makes it possible, depending on the production speed, to open the grippers earlier or later and thus to achieve a constant deceleration of the suction roll 1. Because the gripper opening time P depends on the variable speed speed v k of the gripper chains 27, each corresponding to a production speed range of a sheet-fed rotary printing press, is adjustable, the gripper opening time P is shifted with increasing speed v k so that a longer braking distance is available for braking the sheet 24.
  • FIG. 6 shows a profile of the peripheral speed v s of the suction roll 1 at a maximum speed v k max of the gripper chains 27 and at a minimum speed v k min of the gripper chains 27.
  • the acceleration of the roller 1 increases with increasing production speed, while the deceleration preferably remains the same over the entire production speed range.
  • the holding force exerted by the roller 1 on the sheet 24 can of course also be generated with an electrostatically charged roller 1 instead of suction air.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Abstract

Bei einer Vorrichtung in einem Bogenausleger ist zur Abbremsung eines Bogens (24) eine Walze (1) angeordnet, die bei Übernahme des Bogens (24) mit höherer Geschwindigkeit umläuft als bei Abgabe des Bogens (24). Die Walze (1) ist als durchgängiger Zylinderkörper mit druckfarbeabstoßendem Mantel (3) ausgeführt und mit einer Einrichtung zum Halten des Bogens (24) auf der Walze (1) versehen und wirkt mit einer Feuchteinrichtung zusammen. In a device in a sheet delivery, a roller (1) is arranged to brake a sheet (24) and rotates at a higher speed when the sheet (24) is taken over than when the sheet (24) is delivered. The roller (1) is designed as a continuous cylinder body with a coating (3) repelling ink and is provided with a device for holding the sheet (24) on the roller (1) and cooperates with a dampening device.

Description

Die Erfindung betrifft eine als Bogenbremse benutzten Saugwalze gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to a suction roll used as a sheet brake according to the preamble of patent claim 1.

Bogenbremsen sind z.B. durch die DE-PS 721 545 bekannt­geworden. Sie besteht aus einer Mehrzahl von Saugkörpern, deren Umfangsgeschwindigkeit bei Übernahme des Bogens einer annäherend der Fördergewchwindigkeit der Greifer­kette gleich ist und sich bis zum Augenblick des Ver­lassens des Bogenendes von den Saugkörpern fortlaufend abnimmt.Bow brakes are e.g. made known by DE-PS 721 545. It consists of a plurality of absorbent bodies, the circumferential speed of which when the sheet is taken over is approximately the same as the conveying speed of the gripper chain and decreases continuously from the absorbent body until the moment the sheet end is left.

Bei Anwendung einer derartigen Bogenbremse in Schön- und Widerdruckmaschinen besteht die Gefahr, daß die Bogen auf der Saugwalze mit der frisch bedruckten Seite auf den Saug­körpern abschmieren, da im Zeitpunkt der Bogenübernahme durch die Saugwalze die Umfangsgechwindigkeit der Saug­körper und die Bogengeschwindigkeit unterschiedlich sind. Je höher die Maschinengeschwindigkeit, umso höher ist die Abschmiergefahr.When using such a sheet brake in perfecting machines there is a risk that the sheets on the suction roll will smear with the freshly printed side on the suction bodies, since the circumferential speed of the suction bodies and the sheet speed are different when the sheet is taken over by the suction roll. The higher the machine speed, the higher the risk of greasing.

Der Erfindung liegt die Aufgabe zugrunde, eine Bogenbremse in einer Bogenauslegevorrichtung einer Bogenrotationsdruck­maschine zu schaffen, die auch bei einer Schön- und Wider­druck-Bogenrotationsdruckmaschine benutzt werden kann, ohne daß die Bogenbremse die frisch bedruckte Seite verschmiert.The invention has for its object to provide a sheet brake in a sheet delivery device of a sheet-fed rotary printing press, which can also be used in a perfecting sheet-fed rotary printing press without the sheet brake smearing the freshly printed page.

Die Aufgabe wird erfindungsgemäß durch den kennzeichnenden Teil des Anspruchs 1 gelöst.The object is achieved by the characterizing part of claim 1.

Die mit der Erfindung erzielbaren Vorteile bestehen insbe­sondere darin, daß eine sichere und verschmierfreie Bogen­ablage auch bei im Schön- und Widerdruck bedruckten Bogen bei z.Zt. höchster Geschwindigkeit gewährleistet ist.The advantages that can be achieved with the invention are, in particular, that a secure and smear-free sheet deposit even with sheets printed in face and reverse printing at the moment. highest speed is guaranteed.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben. Es zeigen:

  • Fig. 1: eine schematische Seitenansicht einer Bogen­auslage;
  • Fig. 2: eine Saugwalze mit angestelltem Feuchtwerk;
  • Fig. 3: eine Saugwalze mit einer Wischbandanordnung;
  • Fig. 4: eine Variante zu Figur 3;
  • Fig. 5: eine Saugwalze mit angestellter Walze mit Textilüberzug;
  • Fig. 6: ein Zeit-Geschwindigkeitsdiagramm.
An embodiment of the invention is shown in the drawing and will be described in more detail below. Show it:
  • 1: a schematic side view of a sheet delivery;
  • 2: a suction roll with the dampening unit switched on;
  • 3: a suction roller with a wiper belt arrangement;
  • 4: a variant of FIG. 3;
  • Fig. 5: a suction roll with an attached roller with a textile cover;
  • Fig. 6: a time-speed diagram.

In nicht dargestellten Seitengestellen einer Bogenauslege­vorrichtung ist in bekannter Weise eine Saugwalze 1 drehbar gelagert. Die Saugwalze 1 wird mittels eines drehzahlsteu­erbaren Gleichstrommotors 2 angetrieben. Die Saugwalze 1 weist eine farbabstoßende z.B. verchromte Mantelfläche 3 auf. Die Saugwalze 1 ist mit Sauglöchern 4 ausgestattet, die die Saugwalze 1 radial durchdringen. Die Sauglöcher 4 sind von einer Mitte der Saugwalze 1 ausgehend auf einer rechts- bzw. linksgängigen Schraubenlinie angeordnet. Unter­halb der Saugwalze 1 ist eine mit Saugluft beaufschlagbare und gegen die Saugwalze 1 abgedichtete Saugleiste 5 zwischen den Seitengestellen gelagert.In side frames of a sheet delivery device, not shown, a suction roll 1 is rotatably mounted in a known manner. The suction roll 1 is driven by means of a speed-controllable direct current motor 2. The suction roll 1 has an ink-repellent, for example, chrome-plated outer surface 3. The suction roll 1 is equipped with suction holes 4, which penetrate the suction roll 1 radially. The suction holes 4 are arranged starting from a center of the suction roll 1 on a right-hand or left-hand screw line. Beneath the suction roller 1, a suction bar 5, which can be acted upon by suction air and sealed against the suction roller 1, is mounted between the side frames.

In einer ersten Ausführungsform (Fig. 2) der erfindungsge­mäßen Bogenauslegevorrichtung ist an die Saugwalze 1 ein an sich bekanntes Feuchtwerk 6 angestellt, das aus einer Feucht­wanne 7, einer chrombeschichteten Duktorwalze 8 und einer gummibeschichteten Auftragswalze 9 besteht. Die Duktorwalze 8 und die Auftragswalze 9 werden über nicht dargestellte Zahnräder von der Saugwalze 1 so angetrieben, daß eine Re­lativgeschwindigkeit zwischen der Saugwalze 1 und der Auf­tragswalze 9, bzw. der Auftragswalze 9 und der Duktorwalze 8 erzeugt wird, wobei vorzugsweise die Umfangsgeschwindig­keit der Auftragswalze 9 kleiner ist als die Umfangsgeschwin­digkeit der Saugwalze 1.In a first embodiment (FIG. 2) of the sheet delivery device according to the invention, a dampening unit 6 known per se is employed on the suction roller 1, which comprises a dampening unit 7, a chrome-coated ductor roller 8 and a rubber-coated application roller 9. The ductor roller 8 and the application roller 9 are driven by the suction roller 1 via gears (not shown) such that a relative speed is generated between the suction roller 1 and the application roller 9, or the application roller 9 and the ductor roller 8, preferably the peripheral speed of the application roller 9 is smaller than the peripheral speed of the suction roller 1.

Die Figur 3 zeigt eine Bogenauslegevorrichtung, bei der ein feuchtes Wischband 11 mittels einer Andruckleiste 12 an die oben beschriebene Saugwalze 1 angedrückt wird. Das Wischband 11 ist auf einer Spule 13 aufgewickelt und wird über eine angetriebene Aufwickelspule 14 an der Saugwalze 1 entgegen ihrer Drehrichtung schrittweise vorbeigezogen. In der Figur 4 wird eine zweite Variante der in Fig. 3 beschrie­benen Anordnung gezeigt, bei der das Wischband 11 zwischen der Saugwalze 1 und der Saugleiste 5 hindurchgezogen wird, so daß die Andruckleiste 12 entfallen kann.FIG. 3 shows a sheet delivery device in which a moist wiper belt 11 is pressed onto the suction roller 1 described above by means of a pressure bar 12. The wiper belt 11 is wound on a spool 13 and is gradually pulled past the direction of rotation of the suction roller 1 via a driven winding spool 14. FIG. 4 shows a second variant of the arrangement described in FIG. 3, in which the wiper belt 11 is pulled between the suction roller 1 and the suction bar 5, so that the pressure bar 12 can be omitted.

Wie in Fig. 5 dargestellt kann eine, an die Saugwalze 1 angestellte, rotierende Walze 16 mit einem Textilüberzug 15 z.B. Moltex verwendet werden. Der Textilüberzug 15 wird vorzugsweise mittels Sprühdüsen 17 taktmäßig gefeuchtet.As shown in Fig. 5, a rotating roller 16 placed against the suction roller 1 with a textile cover 15 e.g. Moltex can be used. The textile cover 15 is preferably moistened in cycles by means of spray nozzles 17.

Die oben beschriebenen Einrichtungen zum Feuchten und Rei­nigen der Saugwalze 1 sind jeweils unterhalb eines Bogenleit­bleches 18 in Laschen 19 gelagert, die an dem Bogenleitblech 18 befestigt sind. Das Bogenleitblech 18 ist vorzugsweise nach oben verschwenkbar, so daß die Einrichtungen zum Feuch­ten und Reinigen (6, 11, 16) gut zugänglich sind. Unterhalb der Einrichtungen zum Feuchten und Reinigen (6, 11, 16) der Saugwalze 1 ist an einer gestellfesten, zweiteiligen Traverse 21, 22 eine Schmutzwanne 23 befestigt. Die Traverse 21, 22 dient zudem zur Aufnahme der Sprühdüsen 17.The devices for dampening and cleaning the suction roller 1 described above are each mounted below a sheet guide plate 18 in tabs 19 which are fastened to the sheet guide plate 18. The sheet guide plate 18 is preferably pivotable upwards, so that the devices for dampening and cleaning (6, 11, 16) are easily accessible. Below the devices for dampening and cleaning (6, 11, 16) of the suction roller 1, a dirt trough 23 is attached to a two-part cross member 21, 22 fixed to the frame. The crossbeam 21, 22 also serves to receive the spray nozzles 17.

In der Figur 6 wird in einem Zeit-Geschwindigkeitsdiagramm ein Geschwindigkeitsverlauf einer Umfangsgeschwindigkeit vs der Saugwalze 1 dargestellt. Dazu sind im Diagramm eine Auslagegeschwindigkeit va der Bogen und ein Geschwin­digkeitsbereich vk der Greiferkettengeschwindigkeit darge­stellt. Der Geschwindigkeitsbereich vk wird durch eine maximale Greiferkettengeschwindigkeit vk max und eine minimale Greiferkettengeschwindigkeit vk min begrenzt. Mit a (Neigung) ist ein Bereich der Umfangsgeschwindigkeit vs der Saugwalze 1, in dem die Saugwalze 1 eine Verzö­gerung erfährt, bezeichnet. Die Neigung a ist unabhängig von der Greiferkettengeschwindigkeit vk. Während der über alle Maschinengeschwindigkeiten konstanten Bogenauslegezeit ta sind jeweils die Umfangsgeschwindigkeit vs und die Auslegegeschwindigkeit vs gleich. Mit P ist ein Greifer­öffnungszeitpunkt bezeichnet.FIG. 6 shows a speed curve of a peripheral speed v s of the suction roll 1 in a time-speed diagram. For this purpose, a delivery speed v a of the sheets and a speed range v k of the gripper chain speed are shown in the diagram. The speed range v k is limited by a maximum gripper chain speed v k max and a minimum gripper chain speed v k min . A (inclination) denotes a range of the peripheral speed v s of the suction roll 1 in which the suction roll 1 experiences a deceleration. The inclination a is independent of the hook chain speed v k . During the constant for all machine speeds Bogenauslegezeit t a, the peripheral speed v are each s and the design speed v s is equal. P is a gripper opening time.

Die Schön- und Widerdruck bedruckten Bogen 24 werden jeweils mittels an Greiferketten 27 befestigter Greiferwagen 28 auf einen Stapeltisch 32 transportiert, wobei die Greiferwagen 28 steuerbare Greiferreihen 29 aufweisen. Solange die Bogen 24 in den Greifern 29 eingeklemmt sind, ist die Saugwalzen­unfangsgeschwindigkeit vs jeweils gleich der Greiferketten­geschwindigkeit vk.The sheets 24 printed on face and reverse printing are each transported to a stacking table 32 by means of gripper carriages 28 attached to gripper chains 27, the gripper carriages 28 having controllable rows of grippers 29. As long as the sheets 24 are clamped in the grippers 29, the suction roll initial speed v s is in each case equal to the gripper chain speed v k .

Mittels einer nicht dargestellten, verstellbaren an sich be­kannten Greifersteuerkurve werden die Greifer 29 geöffnet, bevor eine Vorderkante 33 der Bogen 24 einen Anschlag 24 des Stapeltisches 32 erreicht. Der Bogen 24 wird frei und schwebt bis zum Anschlag 34. Gleichzeitig mit dem Öffnen des Greifers 29 beginnt ein Abbremsen der Saugwalze 1 mittels des Gleich­strommotors 2, bis ihre Umfangsgeschwindigkeit vs gleich der konstanten Auslegegeschwindigkeit va (z.B. 10% der max. Greiferkettengeschwindigkeit vk max ist. Entsprechend der abnehmenden Umfangsgeschwindigkeit vs der Saugwalze 1 werden die Bogen 24 biz zu ihrer konstanten Auslegegeschwindigkeit va verzögert.The grippers 29 are opened by means of an adjustable gripper control curve, not shown, which is known per se, before a front edge 33 of the sheets 24 reaches a stop 24 of the stacking table 32. The sheet 24 becomes free and floats up to the stop 34. Simultaneously with the opening of the gripper 29, the suction roller 1 is braked by means of the direct current motor 2 until its peripheral speed v s is equal to the constant design speed v a (eg 10% of the maximum gripper chain speed v k max . In accordance with the decreasing peripheral speed v s of the suction roll 1, the sheets 24 are decelerated to their constant laying speed v a .

Zur Regelung der Drehzahl des Gleichstrommotors 2 sind ein Thyristorsatz, ein mit dem Hauptantrieb der Bogenrotations­druckmaschine gekuppelter Tachogenerator (Sollwertgeber), ein mit dem Gleichstrommotor 2 gekuppelter Tachogenerator (Ist­wertgeber) und elektronische Sollwertbildner vorgesehen.A thyristor set, a tacho generator (setpoint generator) coupled to the main drive of the sheet-fed rotary printing press, a tacho generator (actual setpoint generator) coupled to the direct current motor 2 and electronic setpoint formers are provided to regulate the speed of the DC motor 2.

Bis zum Öffnen der Greifer 29 hält die oben beschriebene Regelung die Umfangsgeschwindigkeit vs der Saugwalze 1 gleich der Greiferkettengeschwindigkeit vk. Öffnen die Greifer 29, so wird der Drehzahlsollwert für den Gleich­ strommotor 2 vom Sollwertgeber "Tachogenerator" auf den Sollwertgeber "Sollwertbildner". Entsprechend der einge­prägten Sollwerte des Sollwertbildners wird die Umfangsge­schwindigkeit vs der Walze 1 laufend reduziert bis sie die Umfangsgeschwindigkeit va erreicht hat. Als Istwert­geber hat die Saugwalze 1 ein Tachogenerator angekuppelt. Zur Vorgabe einer gewünschten Auslegegeschwindigkeit va weist das Steuergerät für den Gleichstrommotor 2 einen Sollwerteingabesteller auf.Until the grippers 29 open, the control described above keeps the peripheral speed v s of the suction roller 1 equal to the gripper chain speed v k . If the grippers 29 open, the speed setpoint becomes the same Current motor 2 from the setpoint generator "tachogenerator" to the setpoint generator "setpoint generator". In accordance with the impressed target values of the target value generator, the peripheral speed v s of the roller 1 is continuously reduced until it has reached the peripheral speed v a . The suction roller 1 has coupled a tachometer generator as the actual value transmitter. In order to specify a desired design speed v a , the control device for the direct current motor 2 has a setpoint input unit.

Sobald eine Hinterkante 37 des Bogens 24 die Saugwalze 1 verlassen hat, wird die Saugwalze 1 vom Gleichstrommotor 2 wieder so beschleunigt, bis die Umfangsgeschwindigkeit vs der Saugwalze 1 gleich der Geschwindigkeit vk der Greifer­ketten 27 ist. Die Walze 1 muß die Geschwindigkeit vs vor einem Eintreffen des nächsten Bogens 24 an der Saug­walze 1 wieder erreicht haben.As soon as a trailing edge 37 of the sheet 24 has left the suction roller 1, the suction roller 1 is accelerated again by the direct current motor 2 until the peripheral speed v s of the suction roller 1 is equal to the speed v k of the gripper chains 27. The roller 1 must have reached the speed v s again before the next sheet 24 arrives at the suction roller 1.

Zur Vermeidung eines Abschmierens des im Schön- und Wider­druck hergestellten Bogens 24 wird die hydrophile, ver­chromte Mantelfläche 3 der Saugwalze 1 feucht von anhaf­tenden Druckfarbenpartikeln durch die vorbeschriebenen Einrichtungen (6, 11, 16) gereinigt, so daß keine Druck­farbenpartikel über eine bedruckte Unterseite 36 des Bogens 24 hinweggezogen werden.In order to avoid smearing the sheet 24 produced in face and reverse printing, the hydrophilic, chrome-plated outer surface 3 of the suction roller 1 is damply cleaned of adhering ink particles by the above-described devices (6, 11, 16), so that no ink particles have a printed underside 36 of the Bow 24 are pulled away.

Durch eine verstellbare Greifersteuerkurve ist es möglich, je nach Produktionsgeschwindigkeit ein früheres oder spä­teres Öffnen der Greifer und damit eine konstante Verzö­gerung der Saugwalze 1 zu erreichen. Da der Greiferöffnungs­zeitpunkt P in Abhängigkeit von der variablen Geschwindig­ keit vk der Greiferketten 27, kei jeweils einem Produk­tionsgeschwindigkeitsbereich einer Bogenrotationsdruckma­schine entspricht, einstellbar ist, wird mit steigender Geschwindigkeit vk der Greiferöffnungszeitpunkt P so verschoben, daß zum Abbremsen des Bogens 24 ein längerer Bremsweg zur Verfügung steht.An adjustable gripper control curve makes it possible, depending on the production speed, to open the grippers earlier or later and thus to achieve a constant deceleration of the suction roll 1. Because the gripper opening time P depends on the variable speed speed v k of the gripper chains 27, each corresponding to a production speed range of a sheet-fed rotary printing press, is adjustable, the gripper opening time P is shifted with increasing speed v k so that a longer braking distance is available for braking the sheet 24.

Dazu ist in der Fig. 6 ein Verlauf der Umfangsgeschwin­digkeit vs der Saugwalze 1 bei einer maximalen Geschwin­digkeit vk max der Greiferketten 27 und bei einer mini­malen Geschwindigkeit vk min der Greiferketten 27 dar­gestellt.6 shows a profile of the peripheral speed v s of the suction roll 1 at a maximum speed v k max of the gripper chains 27 and at a minimum speed v k min of the gripper chains 27.

Wie aus Fig. 6 ersichtlich, steigt die Beschleunigung der Walze 1 mit steigender Produktionsgeschwindigkeit, während die Verzögerung vorzugsweise über den gesammten Produktions­geschwindigkeitsbereich gleich bleibt.As can be seen from FIG. 6, the acceleration of the roller 1 increases with increasing production speed, while the deceleration preferably remains the same over the entire production speed range.

Die Festhaltekraft, die die Walze 1 auf den Bogen 24 aus­übt, kann selbstverständlich auch anstatt von Saugluft mit elektrostratisch aufgeladener Walze 1 erzeugt werden.The holding force exerted by the roller 1 on the sheet 24 can of course also be generated with an electrostatically charged roller 1 instead of suction air.

TeilelisteParts list

  • 1 Saugwalze1 suction roller
  • 2 Gleichstrommotor2 DC motor
  • 3 Mantelfläche (1)3 lateral surface (1)
  • 4 Sauglöcher4 suction holes
  • 5 Saugleiste5 suction bar
  • 6 Feuchtwerk6 dampening system
  • 7 Feuchtwanne7 wet tub
  • 8 Duktorwalze8 duct roller
  • 9 Auftragswalze9 applicator roller
  • 10 -10 -
  • 11 Wischband11 wiper belt
  • 12 Andruckleiste12 pressure bar
  • 13 Spule13 coil
  • 14 Aufwickelspule14 take-up spool
  • 15 Textilüberzug15 textile cover
  • 16 Walze16 roller
  • 17 Sprühdüse17 spray nozzle
  • 18 Bogenleitblech18 sheet baffle
  • 19 Lasche19 tab
  • 20 -20 -
  • 21 Traverse21 traverse
  • 22 Traverse22 traverse
  • 23 Schmutzwanne23 dirt tray
  • 24 Bogen24 sheets
  • 25 -25 -
  • 26 -26 -
  • 27 Greiferkette27 gripper chain
  • 28 Greiferwagen28 grab cars
  • 29 Greifer29 grippers
  • 30 -30 -
  • 31 Greifer31 grippers
  • 32 Stapeltisch32 stacking table
  • 33 Vorderkante (24)33 leading edge (24)
  • 34 Anschlag (32)34 stop (32)
  • 35 -35 -
  • 36 Unterseite (24)36 bottom (24)
  • 37 Hinterkante (24)37 trailing edge (24)
  • 3838
  • vk Geschwindigkeitsbereich Greiferkettenv k Speed range of gripper chains
  • vs Umfangsgeschwindigkeit Saugwalzev s Suction roller peripheral speed
  • va Auslegegeschwindigkeitv a design speed
  • vk max maximale Geschwindigkeit der Greiferkettenv k max maximum speed of the gripper chains
  • vk min minimale Geschwindigkeit der Greiferkettenv k min minimum speed of the gripper chains
  • P GreiferöffnungszeitpunktP Gripper opening time
  • a Neigunga slope
  • ta Auslegezeitt a design time

Claims (6)

1. Bogenauslegevorrichtung mit einer Walze als Bogenbremse, wobei die Walze bei einer Übernahme eines Bogens mit höherer Umfangsgeschwindigkeit umläuft als bei der Ab­lage des Bogens, dadurch gekennzeichnet, daß die Walze (1) als durchgängiger, nicht abgesetzter Zylinderkörper ausgeführt ist, daß eine Mantelfläche (3) der Walze (1) druckfarbeabstoßend ist, daß die Walze (1) derart mit ungleichförmiger Geschwindigkeit umläuft, daß die Um­fangsgeschwindigkeit der Walze (1) bei Übernahme des Bogens mit der Geschwindigkeit des Bogens gleich ist, daß eine mit der Walze (1) zusammenwirkende Feuchtein­richtung (6, 7, 8, 9, 11, 12, 13, 14, 15, 16, 17) an­geordnet ist, daß die Walze (1) mit einer Einrichtung (4) zur Erzeugung einer Haftkraft zwischen Bogen (24) und Walze (1) versehen ist.1. Sheet delivery device with a roller as a sheet brake, the roller rotating at a higher peripheral speed when taking over a sheet than when depositing the sheet, characterized in that the roller (1) is designed as a continuous, non-offset cylinder body that a lateral surface ( 3) the roller (1) repels the ink, so that the roller (1) rotates at a non-uniform speed such that the peripheral speed of the roller (1) when the sheet is taken over is the same as the speed of the sheet that one with the roller (1) cooperating dampening device (6, 7, 8, 9, 11, 12, 13, 14, 15, 16, 17) is arranged that the roller (1) with a device (4) for generating an adhesive force between the sheet (24) and Roller (1) is provided. 2. Bogenauslegevorrichtung nach Anspruch 1, dadurch ge­kennzeichnet, daß die Walze (1) mit Sauglöchern (4) versehen ist.2. Sheet delivery device according to claim 1, characterized in that the roller (1) is provided with suction holes (4). 3. Bogenauslegevorrichtung nach Ansprüchen 1 und 2, da­durch gekennzeichnet, daß eine Ablegegeschwindigkeit ( va) unabhängig von der Produktionsgeschwindigkeit ( vk) einstellbar ist.3. Sheet delivery device according to claims 1 and 2, characterized in that a filing speed (v a ) is adjustable independently of the production speed (v k ). 4. Bogenauslegevorrichtung nach Ansprüchen 1, 2 und 3, da­durch gekennzeichnet, daß ein Feuchtwerk (6) bestehend aus einer Feuchtwanne (7), einer Duktorwalze (8) und einer Auftragswalze (9) an die Walze (1) anstellbar ist.4. Sheet delivery device according to claims 1, 2 and 3, characterized in that a dampening unit (6) consisting of a dampening tray (7), a duct roller (8) and an application roller (9) on the roller (1) can be set. 5. Bogenauslegevorrichtung nach Ansprüchen 1, 2 und 3, da­durch gekennzeichnet, daß ein endliches Wischband (11) als Feuchtwerk (6) an die Walze (1) anstellbar ist, daß das Wischband (11) auf Spulen (13, 14) gelagert ist, daß das Wischband durch Leisten (5, 12) an die Walze (1) andrückbar ist.5. Sheet delivery device according to claims 1, 2 and 3, characterized in that a finite wiper belt (11) as a dampening unit (6) on the roller (1) is adjustable that the wiper belt (11) is mounted on spools (13, 14) that the wiper belt can be pressed against the roller (1) by strips (5, 12). 6. Bogenauslegevorrichtung nach Ansprüchen 1, 2 und 3, da­durch gekennzeichnet, daß als Feuchtwerk (6) eine Walze (16) an die Walze (1) angestellt ist, daß die Walze (16) einen textilen Überzug (15) aufweist, daß die Walze (16) von Düsen (17) gefeuchtet wird.6. Sheet delivery device according to claims 1, 2 and 3, characterized in that as a dampening unit (6) a roller (16) on the roller (1) is employed, that the roller (16) has a textile cover (15) that the Roller (16) is moistened by nozzles (17).
EP86114659A 1985-12-05 1986-10-22 Delivery device for a sheet-fed rotary printing machine Expired - Lifetime EP0225455B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3543026A DE3543026C1 (en) 1985-12-05 1985-12-05 Delivery device for a sheet-fed rotary printing machine
DE3543026 1985-12-05

Publications (3)

Publication Number Publication Date
EP0225455A2 true EP0225455A2 (en) 1987-06-16
EP0225455A3 EP0225455A3 (en) 1988-03-02
EP0225455B1 EP0225455B1 (en) 1990-01-03

Family

ID=6287719

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86114659A Expired - Lifetime EP0225455B1 (en) 1985-12-05 1986-10-22 Delivery device for a sheet-fed rotary printing machine

Country Status (7)

Country Link
US (1) US4717141A (en)
EP (1) EP0225455B1 (en)
JP (1) JPS62153057A (en)
CS (1) CS270214B2 (en)
DD (1) DD252590A5 (en)
DE (2) DE3543026C1 (en)
SU (1) SU1544183A3 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3812678C3 (en) * 1988-04-16 1996-04-11 Heidelberger Druckmasch Ag Device for cleaning cylindrical surfaces in rotary printing machines
DE4220582A1 (en) * 1991-08-16 1993-02-18 Heidelberger Druckmasch Ag DEVICE FOR REGULATING AND / OR CONTROLLING INDIVIDUAL CONTROL ELEMENTS IN THE BOOM AREA OF A PRINTING MACHINE
US5969274A (en) * 1997-02-25 1999-10-19 Hewlett-Packard Company Alternate method of sensing paper entry
US6354591B1 (en) * 2000-01-19 2002-03-12 Quad/Tech, Inc. Printed product slow down apparatus and method
JP2016074517A (en) * 2014-10-07 2016-05-12 大日本印刷株式会社 Suction brake vehicle control system, and sheet printer
DE102021102597A1 (en) 2021-02-04 2022-08-04 Koenig & Bauer Ag Method for operating a delivery of a sheet processing machine with a sheet brake
DE102021115291A1 (en) 2021-06-14 2022-12-15 Koenig & Bauer Ag Method for operating a delivery of a sheet processing machine with a sheet brake and delivery

Citations (5)

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Publication number Priority date Publication date Assignee Title
DE721545C (en) * 1940-11-29 1942-06-12 Roland Offsetmaschf Delivery device with a suction roll used as a sheet brake for printing machines
US3432161A (en) * 1966-10-13 1969-03-11 Lamb Grays Harbor Co Inc Sheet control apparatus
US3730517A (en) * 1971-05-03 1973-05-01 Harris Intertype Corp Sheet conveyor apparatus and method
EP0096276A2 (en) * 1982-06-03 1983-12-21 Koenig & Bauer Aktiengesellschaft Delivery mechanism for rotary presses
DE3331129A1 (en) * 1982-10-01 1984-04-05 VEB Kombinat Polygraph "Werner Lamberz" Leipzig, DDR 7050 Leipzig Method and device for feeding damping medium in offset printing machines

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US2969980A (en) * 1958-09-08 1961-01-31 Miehle Goss Dexter Inc Vacuum slow down device for sheet delivery mechanism
US3686771A (en) * 1970-07-23 1972-08-29 Polygraph Leipzig Humidity regulating system for printing machines
DE2348320C3 (en) * 1973-09-26 1978-12-14 Vits-Maschinenbau Gmbh, 4018 Langenfeld Device for stacking individual sheets of the same length
JPS517423U (en) * 1974-07-06 1976-01-20
FR2285997A1 (en) * 1974-09-11 1976-04-23 Moestue Hans DEVICE FOR CLEANING A CYLINDER OF A PRINTING MACHINE
DE2845932A1 (en) * 1978-10-21 1980-04-24 Heidelberger Druckmasch Ag COMBINED MOISTURE INK FOR OFFSET PRINTING
JPS56132353A (en) * 1980-03-22 1981-10-16 Canon Inc Transfer material conveyor
JPS5892565A (en) * 1981-11-30 1983-06-01 Dainippon Printing Co Ltd Method of and apparatus for washing ink roller
JPS60155461A (en) * 1983-09-29 1985-08-15 Akiyama Insatsuki Seizo Kk Sheet delivery mechanism for sheet-press
DE3418344A1 (en) * 1984-05-17 1985-11-21 Georg Spiess Gmbh, 8906 Gersthofen DEVICE FOR FORMING AN ARC PACK

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE721545C (en) * 1940-11-29 1942-06-12 Roland Offsetmaschf Delivery device with a suction roll used as a sheet brake for printing machines
US3432161A (en) * 1966-10-13 1969-03-11 Lamb Grays Harbor Co Inc Sheet control apparatus
US3730517A (en) * 1971-05-03 1973-05-01 Harris Intertype Corp Sheet conveyor apparatus and method
EP0096276A2 (en) * 1982-06-03 1983-12-21 Koenig & Bauer Aktiengesellschaft Delivery mechanism for rotary presses
DE3331129A1 (en) * 1982-10-01 1984-04-05 VEB Kombinat Polygraph "Werner Lamberz" Leipzig, DDR 7050 Leipzig Method and device for feeding damping medium in offset printing machines

Also Published As

Publication number Publication date
CS270214B2 (en) 1990-06-13
US4717141A (en) 1988-01-05
JPS62153057A (en) 1987-07-08
DE3667956D1 (en) 1990-02-08
DD252590A5 (en) 1987-12-23
EP0225455B1 (en) 1990-01-03
SU1544183A3 (en) 1990-02-15
DE3543026C1 (en) 1987-04-02
CS766786A2 (en) 1989-10-13
EP0225455A3 (en) 1988-03-02

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