EP0518181A1 - Controllable gripper unit in printing machines - Google Patents

Controllable gripper unit in printing machines Download PDF

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Publication number
EP0518181A1
EP0518181A1 EP92109269A EP92109269A EP0518181A1 EP 0518181 A1 EP0518181 A1 EP 0518181A1 EP 92109269 A EP92109269 A EP 92109269A EP 92109269 A EP92109269 A EP 92109269A EP 0518181 A1 EP0518181 A1 EP 0518181A1
Authority
EP
European Patent Office
Prior art keywords
curve
gripper unit
unit according
controllable
gripper
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
EP92109269A
Other languages
German (de)
French (fr)
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EP0518181B1 (en
Inventor
Volkmar Rolf Schwitzky
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer Albert AG
Koenig and Bauer AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Publication of EP0518181A1 publication Critical patent/EP0518181A1/en
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Publication of EP0518181B1 publication Critical patent/EP0518181B1/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
    • B65H29/02—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
    • 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
    • B65H29/045—Details of grippers
    • 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
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/176—Cardboard
    • 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 controllable gripper unit for sheet delivery in printing machines according to the preamble of claim 1.
  • the conveying speed of the sheet to be deposited must be reduced at the moment the sheet is deposited or must be decelerated to zero in order to obtain an evenly deposited, well-stacked stack .
  • a sheet delivery device for slowing the depositing of sheets in which gripper carriages are attached to circulating transport chains via coupling and the speed is reduced by separating the path of the gripper carriages from the chain conveyor in that an eccentric for deflecting the transport chain Circular arc-shaped gripper carriage deflection path is provided, the axis of the deflection wheel being arranged below the center of the gripper carriage deflection path.
  • the transport chain with the articulation point is the coupling of the gripper carriage from the gripper carriage track through the deflection wheel arranged eccentrically to the gripper carriage track distracted.
  • the transport chain travels a larger distance than the gripper carriage, which reduces the speed of the gripper carriage and thus the speed of the sheet to be deposited.
  • a disadvantage of this sheet delivery device is that two guideways must be used, one for the transport chain and the other for the gripper carriage.
  • the slowing of the grippers in the depositing area which is brought about in this way, is about 20 to 30 percent of the machine running speed and remains constant, since the chain has only a limited possibility of deflection in relation to the gripper carriage in the deflection area, which leads to the differential speed between the gripper carriage and chain mentioned.
  • a suction roller or similar suction elements must also be used to brake the printing material, which is particularly disadvantageous if printing is done using the perfecting method and thus the printed back is damaged.
  • the high suction forces required in cardboard processing, which are necessary due to the large kinetic energy of the sheets, are not achieved in most cases.
  • the sheets are deposited on the sheet stops with a relatively high residual speed, which leads to damage to the leading edge of the sheet.
  • the invention has for its object to provide a gripper control in sheet delivery of printing machines for slowing the depositing of sheets, the speed of the gripper during the depositing process can be varied from the full transport chain speed to almost zero and reduces the effect of inertia forces on the transport chains will.
  • the controllable gripper unit according to the invention has made it possible to deposit the sheet at the desired speed. Due to the adjustability of the curve part of the curve, it is also possible to curve the sheet over the entire speed range of the machine at the same speed to file. By delaying the grippers, reduced suction power can be used on the suction roller or other suction elements, which has a particularly favorable effect on the perfecting. In addition, less blown air is applied to the sheet, which facilitates stacking as a result of reduced air cushion formation and counteracts the signs of smearing when the sheets are deposited. Likewise, overshooting of the sheets over the sheet stop shaft is avoided, or the sheet front edges are no longer deformed when being deposited due to the inertia of the printed material.
  • the transport chain 1 is guided over a chain wheel 2 and a chain deflection wheel 3 and is supported by chain guides, not shown.
  • the transport chain 1 is equipped at certain intervals with gripper units 4, the gripper units 4 u. a.
  • Known grippers 7, which are seen in a case according to FIG. 1 in the direction of movement A of the transport chain 1, just before the chain deflection wheel 3.
  • the gripper 7 runs with a roller lever 8 against a gripper opening curve 9, the sheet 11 being released and placed against the sheet stops 12 on the sheet stack 13.
  • FIG. 1 The detail D according to FIG. 1 is shown in an enlarged view in FIG. 2.
  • FIG. 2 the perspective view of a gripper unit 4 is shown.
  • Fig. 3 shows the schematic representation of a gripper unit 4 according to the invention in the rest position.
  • two plates 14 are arranged laterally, which are articulated by means of bearing pins 16 on the transport chains 1 according to FIGS. 1 and 2.
  • the signs 14 have two guides 17 arranged parallel to the direction of movement A, in which a slide 18 is arranged so as to be displaceable.
  • Located on the carriage 18 are the grippers, identified overall by 7, which consist of the gripper stop 19, the gripper lever 21, the roller lever 8 and the gripper shaft 22.
  • a tension spring 25 is arranged between the joint 23 on the shield 14 and the joint 24 on the slide 18.
  • toggle lever 26 consisting of two couplings are supported.
  • the toggle lever 26 has a cam roller 27 on the knee joint.
  • the gripper unit 4 is shown in the working position, ie the toggle lever 26 was actuated via the cam roller 27 and the slide 18 was counter to the force of the tension spring 25 against the transport direction A in the Guides 17 moved in direction B.
  • the angle of the toggle lever 26 has increased from the value x to the value y.
  • FIG. 5 the enlarged representation of the chain deflection is shown, without showing the chain deflection wheel 3.
  • a gripper unit 4 which has a compression spring 32, i. H. the carriage 18 is moved in the direction of arrow B against the force of the compression spring 32.
  • the compression spring 32 is fastened between the joint 24 and a fixed point 33 on the shield 14.
  • equivalent means can also be used, e.g. B. gas springs or leg springs.
  • the use of a leg spring would then take place in the knee joint, at the seat of the cam roller 27 and act against the two couplers.
  • a torsion bar spring can also be used, which are arranged in hollow cross members between the plates 14.
  • a curve 29 is formed such that at the time of the curve entry of the lower gripper unit 4 and the passage of the curve roller 27 in the curve entry 31, the previous gripper unit 4 'seen in the direction of transport A simultaneously passes the curve entry 31' with its curve roller 27 '.
  • FIG. 7 shows a further embodiment variant according to FIG. 5, the details of the gripper units being omitted for simplification.
  • the Curve 28 articulated with an adjustable curve part 34.
  • the curve part 34 is adjusted via an actuating element 35, which consists of an actuating motor or can be actuated otherwise mechanically, pneumatically, hydraulically or the like.
  • the control element 35 can also be controlled independently of the speed via the machine control.
  • the function is as described below.
  • the transport chain 1 rotates in the direction of arrow A. 7, the gripper unit 4 runs into the area of the movable cam part 34.
  • the cam roller 27 is acted upon in the knee joint of the knee lever 26 and spreads the knee lever 26, so that the angle between the coupling of the knee lever 26, as shown in FIGS. 3 and 4, changes from the value x to the value y.
  • the carriage 18 moves in the guides 17 in the direction of arrow B, that is, counter to the direction of transport A.
  • This relative movement delays the gripper 7 to the chain circulation speed, allows it to open and the sheet 11 is brought onto the sheet stack.
  • a depositing speed of approximately zero compared to the chain circulation speed is possible.
  • the curve part 34 in the direction of arrow C according to FIG. 7 the deceleration of the carriage 18 increases. The deceleration of the carriage 18 can thus be readjusted as a function of the machine speed. As a result, the same sheet depositing speeds can be achieved for different machine speeds.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Discharge By Other Means (AREA)

Abstract

The invention relates to a controllable gripper unit (4) for sheet feeders in printing machines for the retarded deposition of sheets, which unit is distinguished according to the invention by the fact that the grippers (7) are located on a slide (18) which executes a relative movement in an opposite direction to the running direction of the transport chain (1), which movement is controllable via a cam roller (27) and cams (28). In this way, retardation of the grippers is achieved while the speed of the transport chain remains constant. <IMAGE>

Description

Die Erfindung betrifft eine steuerbare Greifereinheit für Bogenausleger in Druckmaschinen gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to a controllable gripper unit for sheet delivery in printing machines according to the preamble of claim 1.

Bei Bogenauslegern, bei denen die Bogen durch mit gleichförmiger Geschwindigkeit laufende Ketten zum Auslagestapel geführt werden, muß die Fördergeschwindigkeit des abzulegenden Bogens im Augenblick der Bogenablage verringert bzw. muß bis auf den Wert Null verzögert werden, um einen gleichmäßig abgelegten, gut geschichteten Stapel zu erhalten.In the case of sheet delivery, in which the sheets are guided to the delivery stack by chains running at a uniform speed, the conveying speed of the sheet to be deposited must be reduced at the moment the sheet is deposited or must be decelerated to zero in order to obtain an evenly deposited, well-stacked stack .

Gemäß DD-WP 87 048 ist eine Bogenauslageeinrichtung zur verlangsamten Ablage von Bogen bekannt, bei welcher Greiferwagen über Koppeln an umlaufenden Transportketten befestigt sind und die Geschwindigkeitsverringerung über eine Trennung der Bahn der Greiferwagen von der Kettenbahn dadurch erfolgt, daß zur Auslenkung der Transportkette ein exzentrisch zur kreisbogenförmigen Greiferwagenumlenkbahn angeordnetes Umlenkrad vorgesehen ist, wobei die Achse des Umlenkrades unterhalb des Mittelpunktes der Greiferwagenumlenkbahn angeordnet ist. Dabei wird die Transportkette mit dem Anlenkpunkt der Koppel des Greiferwagens von der Greiferwagenbahn durch das exzentrisch zur Greiferwagenbahn angeordnete Umlenkrad abgelenkt. Die Transportkette legt dabei einen größeren Weg als der Greiferwagen zurück, wodurch sich die Geschwindigkeit des Greiferwagens und somit die Geschwindigkeit des abzulegenden Bogens verringert.According to DD-WP 87 048, a sheet delivery device for slowing the depositing of sheets is known, in which gripper carriages are attached to circulating transport chains via coupling and the speed is reduced by separating the path of the gripper carriages from the chain conveyor in that an eccentric for deflecting the transport chain Circular arc-shaped gripper carriage deflection path is provided, the axis of the deflection wheel being arranged below the center of the gripper carriage deflection path. The transport chain with the articulation point is the coupling of the gripper carriage from the gripper carriage track through the deflection wheel arranged eccentrically to the gripper carriage track distracted. The transport chain travels a larger distance than the gripper carriage, which reduces the speed of the gripper carriage and thus the speed of the sheet to be deposited.

Nachteilig an dieser Bogenauslageeinrichtung ist, daß zwei Führungsbahnen eingesetzt werden müssen, einmal für die Transportkette und zum anderen für den Greiferwagen. Die auf diese Art und Weise herbeigeführte Verlangsamung der Greifer im Ablegebereich beträgt etwa 20 bis 30 Prozent der Maschinenlaufgeschwindigkeit und bleibt konstant, da die Kette gegenüber dem Greiferwagen im Umlenkbereich nur eine begrenzte Auslenkmöglichkeit besitzen, was zur genannten Differenzgeschwindigkeit zwischen Greiferwagen und Kette führt.A disadvantage of this sheet delivery device is that two guideways must be used, one for the transport chain and the other for the gripper carriage. The slowing of the grippers in the depositing area, which is brought about in this way, is about 20 to 30 percent of the machine running speed and remains constant, since the chain has only a limited possibility of deflection in relation to the gripper carriage in the deflection area, which leads to the differential speed between the gripper carriage and chain mentioned.

Aus diesen Gründen muß weiterhin eine Saugwalze oder ähnliche Saugelemente zum Abbremsen des Bedruckstoffes eingesetzt werden, was besonders nachteilig ist, wenn im Schön- und Widerdruckverfahren gedruckt wird und somit die bedruckte Rückseite beschädigt wird. Die bei der Kartonverarbeitung benötigten hohen Saugkräfte, welche infolge der großen kinetischen Energie der Bogen notwendig sind, werden in den meisten Fällen nicht erreicht. Dadurch kommt es zur Ablage der Bogen an den Bogenanschlägen mit relativ großer Restgeschwindigkeit, was zur Beschädigung der Bogenvorderkante führt.For these reasons, a suction roller or similar suction elements must also be used to brake the printing material, which is particularly disadvantageous if printing is done using the perfecting method and thus the printed back is damaged. The high suction forces required in cardboard processing, which are necessary due to the large kinetic energy of the sheets, are not achieved in most cases. As a result, the sheets are deposited on the sheet stops with a relatively high residual speed, which leads to damage to the leading edge of the sheet.

Darüberhinaus nimmt die Gefahr des Überschießens eines Bogens über die Bogenanschläge mit steigender Maschinengeschwindigkeit zu.In addition, the risk of a sheet overshooting the sheet stops increases with increasing machine speed.

Zum Reduzieren des Überschießens der Bogenanschläge muß wiederum viel Blasluft eingesetzt werden, was noch insofern ungünstig ist, als daß zwischen den einzelnen abgelegten Bogen infolge der Ausbildung von Luftpolstern eine schlechte Stapelbildung erfolgt.To reduce the overshooting of the sheet stops again a lot of blown air must be used, which is still disadvantageous in that bad stack formation occurs between the individual sheets deposited due to the formation of air cushions.

Weiterhin ist bei der Bogenauslageeinrichtung nach DD-WP 87 048 nachteilig, daß die bei der Verlangsamung der Greiferwagen auftretenden Massenträgheitskräfts sich vollständig auf die Zugkräfte in den Ketten auswirken.Another disadvantage of the sheet delivery device according to DD-WP 87 048 is that the mass inertia occurring when the gripper car slows down has a complete effect on the tensile forces in the chains.

Der Erfindung liegt die Aufgabe zugrunde, eine Greifersteuerung in Bogenauslegern von Druckmaschinen zur verlangsamten Ablage von Bogen zu schaffen, wobei die Geschwindigkeit der Greifer während des Ablagevorganges von der vollen Transportketten-Umlaufgeschwindigkeit bis annähernd Null variiert werden kann und die Wirkung der Massenträgheitskräfte auf die Transportketten reduziert werden.The invention has for its object to provide a gripper control in sheet delivery of printing machines for slowing the depositing of sheets, the speed of the gripper during the depositing process can be varied from the full transport chain speed to almost zero and reduces the effect of inertia forces on the transport chains will.

Diese Aufgabe wird erfindungsgemäß nach dem kennzeichnenden Teil des Anspruchs 1 gelöst. Zweckmäßige Ausgestaltungen sind den Unteransprüchen zu entnehmen.This object is achieved according to the characterizing part of claim 1. Appropriate configurations can be found in the subclaims.

Durch die erfindungsgemäße steuerbare Greifereinheit ist es möglich geworden, den Bogen mit gewünschter Geschwindigkeit abzulegen. Infolge der Einstellbarkeit des Kurventeiles der Kurve ist es auch möglich, die Bogen über den gesamten Drehzahlbereich der Maschine mit gleicher Geschwindigkeit abzulegen. Durch die Verzögerung der Greifer kann mit verminderter Saugkraft an der Saugwalze oder anderen Saugelementen gearbeitet werden, was sich besonders für den Schön- und Widerdruck günstig auswirkt. Darüberhinaus wird weniger Blasluft auf den Bogen aufgebracht, was die Stapelbildung infolge verminderter Luftpolsterbildung erleichtert und den Abschmiererscheinungen beim Ablegen der Bogen engegenwirkt. Gleichfalls wird das Überschießen der Bogen über die Bogenanschlagwelle vermieden oder die Bogenvorderkanten werden bei der Ablage infolge der Massenträgheit des Bedruckgutes nicht mehr deformiert. Die Wirkung der Massenträgheitskräfte auf die Greiferwagen infolge Verzögerung derselben, werden einerseits dadurch verringert, daß sich der größere Teil dieser Kräfte innerhalb der Greifereinheit aufhebt. Andererseits kann der restliche Teil dieser Kräfte durch eine entgegengesetzte Ausbildung der Kurveneinläufe der Kurve kompensiert werden, denn die Schlitten der Greifereinheiten werden zur gleichen Zeit in jeweils entgegengesetzter Richtung, bezogen auf die Transportrichtung A, bewegt.The controllable gripper unit according to the invention has made it possible to deposit the sheet at the desired speed. Due to the adjustability of the curve part of the curve, it is also possible to curve the sheet over the entire speed range of the machine at the same speed to file. By delaying the grippers, reduced suction power can be used on the suction roller or other suction elements, which has a particularly favorable effect on the perfecting. In addition, less blown air is applied to the sheet, which facilitates stacking as a result of reduced air cushion formation and counteracts the signs of smearing when the sheets are deposited. Likewise, overshooting of the sheets over the sheet stop shaft is avoided, or the sheet front edges are no longer deformed when being deposited due to the inertia of the printed material. The effect of the inertial forces on the gripper car due to the deceleration of the same is reduced on the one hand by the fact that the greater part of these forces cancel each other out within the gripper unit. On the other hand, the remaining part of these forces can be compensated for by an opposite formation of the curve inlets of the curve, because the carriages of the gripper units are moved at the same time in the opposite direction with respect to the transport direction A.

Die Erfindung soll nachstehend an einem Ausführungsbeispiel näher erläutert werden. In der zugehörigen Zeichnung zeigen

Fig. 1
die schematische Darstellung der Transportkettenführung mit Greifereinheit einer Bogenrotationsdruckmaschine;
Fig. 2
die Einzelheit D nach Fig. 2;
Fig. 3
die schematische Darstellung einer erfindungsgemäßen Greifereinheit in Ruhestellung;
Fig. 4
eine Darstellung nach Fig. 2, jedoch in Arbeitsstellung;
Fig. 5
die vergrößerte Darstellung der Transportkettenumlenkung an der Bogenauslage nach Fig. 1;
Fig. 6
die vergrößerte und vereinfachte Darstellung der Transportkettenumlenkung gemäß Fig. 5, jedoch in einer weiteren Ausführungsvariante;
Fig. 7
die vergrößerte und vereinfachte Darstellung der Transportkettenumlenkung gemäß Fig. 5, jedoch in einer weiteren Ausführungsvariante.
The invention will be explained in more detail below using an exemplary embodiment. Show in the accompanying drawing
Fig. 1
the schematic representation of the transport chain guide with gripper unit of a sheet-fed rotary printing press;
Fig. 2
the detail D of Fig. 2;
Fig. 3
the schematic representation of a gripper unit according to the invention in the rest position;
Fig. 4
a representation of Figure 2, but in the working position.
Fig. 5
the enlarged view of the transport chain deflection on the sheet delivery of Fig. 1;
Fig. 6
the enlarged and simplified representation of the transport chain deflection according to FIG 5, but in a further embodiment.
Fig. 7
the enlarged and simplified representation of the transport chain deflection according to FIG. 5, but in a further embodiment.

Gemäß Fig. 1 ist der gesamte Verlauf der Transportkette 1 dargestellt. Die Transportkette 1 ist über ein Kettenrad 2 und ein Kettenumlenkrad 3 geführt und wird durch nicht dargestellte Kettenführungen abgestützt.1, the entire course of the transport chain 1 is shown. The transport chain 1 is guided over a chain wheel 2 and a chain deflection wheel 3 and is supported by chain guides, not shown.

Die Transportkette 1 ist in bestimmten Abständen mit Greifereinheiten 4 ausgestattet, Die Greifereinheiten 4 besitzen u. a. bekannte Greifer 7, welche in einem Falle gemäß Fig. 1 in Bewegungsrichtung A der Transportkette 1 gesehen, kurz vor dem Kettenumlenkrad 3, dargestellt sind. Der Greifer 7 läuft mit einem Rollenhebel 8 gegen eine Greiferöffnungskurve 9, wobei der Bogen 11 freigegeben und gegen die Bogenanschläge 12 auf dem Bogenstapel 13 abgelegt wird.The transport chain 1 is equipped at certain intervals with gripper units 4, the gripper units 4 u. a. Known grippers 7, which are seen in a case according to FIG. 1 in the direction of movement A of the transport chain 1, just before the chain deflection wheel 3. The gripper 7 runs with a roller lever 8 against a gripper opening curve 9, the sheet 11 being released and placed against the sheet stops 12 on the sheet stack 13.

An dieser Stelle wird darauf hingewiesen, daß die Kettenräder 2; 3 jeweils beidseitig in der Maschine vorhanden und durch eine Welle verbunden sind. Demzufolge sind die Greifereinheiten 4 zwischen den beiden Transportketten 1 angeordnet.At this point it should be noted that the chain wheels 2; 3 are available on both sides of the machine and are connected by a shaft. As a result the gripper units 4 are arranged between the two transport chains 1.

In Fig. 2 wird in vergrößerter Darstellung die Einzelheit D nach Fig. 1 gezeigt. Insbesondere ist die perspektivische Darstellung einer Greifereinheit 4 gezeigt.The detail D according to FIG. 1 is shown in an enlarged view in FIG. 2. In particular, the perspective view of a gripper unit 4 is shown.

Fig. 3 zeigt die schematische Darstellung einer erfindungsgemäßen Greifereinheit 4 in Ruhestellung. An der Greifereinheit 4 sind seitlich zwei Schilder 14 angeordnet, welche mittels Lagerbolzen 16 an den Transportketten 1 nach Fig. 1 und 2 angelenkt sind. Die Schilder 14 besitzen zwei längs zur Bewegungsrichtung A parallel angeordnete Führungen 17, in welchen ein Schlitten 18 verschiebbar angeordnet ist. Auf dem Schlitten 18 befinden sich die insgesamt mit 7 bezeichneten Greifer, welche aus dem Greiferaufschlag 19, dem Greiferhebel 21, dem Rollenhebel 8 sowie der Greiferwelle 22 bestehen. Zwischen dem Gelenk 23 auf dem Schild 14 und dem Gelenk 24 auf dem Schlitten 18 ist eine Zugfeder 25 angeordnet.Fig. 3 shows the schematic representation of a gripper unit 4 according to the invention in the rest position. On the gripper unit 4, two plates 14 are arranged laterally, which are articulated by means of bearing pins 16 on the transport chains 1 according to FIGS. 1 and 2. The signs 14 have two guides 17 arranged parallel to the direction of movement A, in which a slide 18 is arranged so as to be displaceable. Located on the carriage 18 are the grippers, identified overall by 7, which consist of the gripper stop 19, the gripper lever 21, the roller lever 8 and the gripper shaft 22. A tension spring 25 is arranged between the joint 23 on the shield 14 and the joint 24 on the slide 18.

Ebenfalls an den beiden Gelenken 23; 24 sind die Enden eines aus zwei Koppeln bestehenden Kniehebels 26 gelagert. Der Kniehebel 26 besitzt am Kniegelenk eine Kurvenrolle 27.Also on the two joints 23; 24, the ends of a toggle lever 26 consisting of two couplings are supported. The toggle lever 26 has a cam roller 27 on the knee joint.

Gemäß Fig. 4 wird die Greifereinheit 4 in Arbeitsstellung gezeigt, d. h. der Kniehebel 26 wurde über die Kurvenrolle 27 betätigt und der Schlitten 18 wurde gegen die Kraft der Zugfeder 25 entgegen der Transportrichtung A in den Führungen 17 in Richtung B bewegt. Der Winkel des Kniehebels 26 hat sich vom Wert x auf den Wert y vergrößert.4, the gripper unit 4 is shown in the working position, ie the toggle lever 26 was actuated via the cam roller 27 and the slide 18 was counter to the force of the tension spring 25 against the transport direction A in the Guides 17 moved in direction B. The angle of the toggle lever 26 has increased from the value x to the value y.

In Fig. 5 wird die vergrößerte Darstellung der Kettenumlenkung gezeigt, ohne Darstellung des Kettenumlenkrades 3. Es wird eine Greifereinheit 4 verwendet, welche eine Druckfeder 32 besitzt, d. h. der Schlitten 18 wird gegen die Kraft der Druckfeder 32 in Pfeilrichtung B bewegt. Die Druckfeder 32 ist zwischen dem Gelenk 24 und einem Festpunkt 33 auf dem Schild 14 befestigt. Statt der Zugfeder 25 oder der Druckfeder 32 können auch äquivalente Mittel eingesetzt werden, z. B. Gasfedern oder Schenkelfedern. Der Einsatz einer Schenkelfeder würde jedoch dann im Kniegelenk, am Sitz der Kurvenrolle 27 erfolgen und gegen die beiden Koppeln wirken.In Fig. 5 the enlarged representation of the chain deflection is shown, without showing the chain deflection wheel 3. A gripper unit 4 is used, which has a compression spring 32, i. H. the carriage 18 is moved in the direction of arrow B against the force of the compression spring 32. The compression spring 32 is fastened between the joint 24 and a fixed point 33 on the shield 14. Instead of the tension spring 25 or the compression spring 32, equivalent means can also be used, e.g. B. gas springs or leg springs. However, the use of a leg spring would then take place in the knee joint, at the seat of the cam roller 27 and act against the two couplers.

Es kann auch eine Drehstabfeder verwendet werden, welche in hohlen Quertraversen zwischen den Schildern 14 angeordnet sind.A torsion bar spring can also be used, which are arranged in hollow cross members between the plates 14.

Die bei der Verlangsamung und der später folgenden Beschleunigung des Schlittens 18 auftretenden Massenträgheitskräfte wirken sich nur zu einem kleinen Teil auf die Zugkräfte in den Ketten und damit auf das Drehmoment der Maschine aus. Der größere Teil dieser Kräfte hebt sich innerhalb der Greifereinheit 4 auf.The inertia forces occurring during the deceleration and the subsequent acceleration of the carriage 18 only have a small effect on the tensile forces in the chains and thus on the torque of the machine. The greater part of these forces cancel each other out within the gripper unit 4.

Gemäß Fig. 6 ist eine weitere Ausführungsvariante gemäß Fig. 5 gezeigt, wobei die Einzelheiten der Greifereinheiten zur Vereinfachung weggelassen worden sind. Hierbei ist eine Kurve 29 so ausgebildet, daß zum Zeitpunkt des Kurveneinlaufes der unteren Greifereinheit 4 und dem Passieren der Kurvenrolle 27 im Kurveneinlauf 31, die in Transportrichtung A gesehen vorangegangene Greifereinheit 4' mit ihrer Kurvenrolle 27' gleichzeitig den Kurveneinlauf 31' passiert.6 shows a further embodiment variant according to FIG. 5, the details of the gripper units having been omitted for the sake of simplicity. Here, a curve 29 is formed such that at the time of the curve entry of the lower gripper unit 4 and the passage of the curve roller 27 in the curve entry 31, the previous gripper unit 4 'seen in the direction of transport A simultaneously passes the curve entry 31' with its curve roller 27 '.

Durch die Ausbildung der Kurveneinläufe 31; 31' für die Greifereinheiten 4; 4' wird gewährleistet, daß der noch verbliebene geringe Teil der Massenträgheitskräfte, die auf die Transportketten 1 wirken, durch die entgegengesetzt wirkenden Massenträgheitskräfte der Greifereinheiten 4; 4' ausgeglichen werden, indem der Schlitten 18' der Greifereinheit 4' mit Beginn des Durchfahrens der Kurve 29 im Kurveneinlauf 31' eine Beschleunigung erfährt, während der Schlitten 18 der Greifereinheit 4 mit Beginn des Durchfahrens der Kurve 29 im Kurveneinlauf 31 eine Verzögerung erfährt. Dabei ist die Kurve 29 mit den Kurveneinläufen 31; 31' so ausgebildet, daß die Kurvenrollen 27; 27' der Greifereinheiten 4; 4' gleichzeitig den jeweiligen Kurveneinlauf 31; 31' passieren.By forming the curve inlets 31; 31 'for the gripper units 4; 4 'it is ensured that the remaining small part of the inertial forces which act on the transport chains 1 by the opposing inertial forces of the gripper units 4; 4 'can be compensated by the carriage 18' of the gripper unit 4 'experiencing an acceleration when the curve 29 begins to enter the curve 31', while the slide 18 'of the gripper unit 4 is decelerated when the curve 29 begins to be entered in the curve 31. The curve 29 with the curve inlets 31; 31 'designed so that the cam rollers 27; 27 'of the gripper units 4; 4 'at the same time the respective curve entry 31; 31 'happen.

Gemäß Fig. 7 ist eine weitere Ausführungsvariante gemäß Fig. 5 gezeigt, wobei die Einzelheiten der Greifereinheiten zur Vereinfachung weggelassen worden sind. Hierbei ist die Kurve 28 mit einem verstellbaren Kurventeil 34 gelenkig verbunden. Die Verstellung des Kurventeiles 34 erfolgt über ein Stellelement 35, welches aus einem Stellmotor bestehen oder anderweitig mechanisch, pneumatisch, hydraulisch oder dgl. betätigt werden kann. Das Stellelement 35 kann auch drehzahlunabhängig über die Maschinensteuerung angesteuert werden.7 shows a further embodiment variant according to FIG. 5, the details of the gripper units being omitted for simplification. Here is the Curve 28 articulated with an adjustable curve part 34. The curve part 34 is adjusted via an actuating element 35, which consists of an actuating motor or can be actuated otherwise mechanically, pneumatically, hydraulically or the like. The control element 35 can also be controlled independently of the speed via the machine control.

Die Funktion ist wie nachfolgend beschrieben. Die Transportkette 1 läuft in Pfeilrichtung A um. Gemäß Fig. 7 läuft die Greifereinheit 4 in den Bereich des beweglichen Kurventeiles 34 ein. Die Kurvenrolle 27 wird im Kniegelenk des Kniehebels 26 beaufschlagt und spreizt den Kniehebel 26, so daß sich der Winkel zwischen den Koppeln des Kniehebels 26, wie in Fig. 3 und 4 gezeigt, vom Wert x zum Wert y ändert.The function is as described below. The transport chain 1 rotates in the direction of arrow A. 7, the gripper unit 4 runs into the area of the movable cam part 34. The cam roller 27 is acted upon in the knee joint of the knee lever 26 and spreads the knee lever 26, so that the angle between the coupling of the knee lever 26, as shown in FIGS. 3 and 4, changes from the value x to the value y.

Somit bewegt sich der Schlitten 18 in den Führungen 17 in Pfeilrichtung B, also entgegen der Transportrichtung A. Durch diese Relativbewegung wird der Greifer 7 zur Kettenumlaufgeschwindigkeit verzögert, kann öffnen und der Bogen 11 wird auf den Bogenstapel gebracht. Durch Veränderung der Lage des Kurventeiles 34 ist eine Ablagegeschwindigkeit von annähernd Null gegenüber der Kettenumlaufgeschwindigkeit möglich. Durch Verstellen des Kurventeiles 34 in Pfeilrichtung C nach Fig. 7 nimmt die Verzögerung des Schlittens 18 zu. Somit läßt sich die Verzögerung des Schlittens 18 in Abhängigkeit von der Maschinengeschwindigkeit nachregeln. Dadurch können für unterschiedliche Maschinengeschwindigkeiten gleiche Bogenablagegeschwindigkeiten erzielt werden.Thus, the carriage 18 moves in the guides 17 in the direction of arrow B, that is, counter to the direction of transport A. This relative movement delays the gripper 7 to the chain circulation speed, allows it to open and the sheet 11 is brought onto the sheet stack. By changing the position of the curve part 34, a depositing speed of approximately zero compared to the chain circulation speed is possible. By adjusting the curve part 34 in the direction of arrow C according to FIG. 7, the deceleration of the carriage 18 increases. The deceleration of the carriage 18 can thus be readjusted as a function of the machine speed. As a result, the same sheet depositing speeds can be achieved for different machine speeds.

TeilelisteParts list

11
TransportketteTransport chain
22nd
KettenradtrommelSprocket drum
33rd
KettenumlenkradChain deflection wheel
44th
GreifereinheitGripper unit
4'4 '
GreifereinheitGripper unit
55
--
66
--
77
GreiferGripper
88th
RollenhebelRoller lever
99
GreiferöffnungskurveGripper opening curve
1010th
--
1111
Bogenarc
1212
BogenanschlagBow stop
1313
BogenstapelSheet stack
1414
Schildsign
1515
--
1616
LagerbolzenBearing bolt
1717th
Führungguide
1818th
Schlittencarriage
18'18 '
Schlittencarriage
1919th
GreiferaufschlagGripper impact
2020th
--
2121
GreiferhebelGripper lever
2222
GreiferwelleGripper shaft
2323
Gelenkjoint
2424th
Gelenkjoint
2525th
ZugfederTension spring
2626
KniehebelToggle
2727th
KurvenrolleCam roller
27'27 '
KurvenrolleCam roller
2828
KurveCurve
2929
KurveCurve
3030th
--
3131
KurveneinlaufCornering
31'31 '
KurveneinlaufCornering
3232
DruckfederCompression spring
3333
FestpunktBenchmark
3434
KurventeilPart of the curve
3535
StellelementActuator
AA
TransportrichtungDirection of transport
BB
Bewegungsrichtung des SchlittensDirection of movement of the slide
CC.
Bewegungsrichtung des KurventeilesDirection of movement of the curve part
DD
EinzelheitDetail
xx
Winkelangle
yy
Winkelangle

Claims (9)

Steuerbare Greifereinheit (4) für Bogenausleger in Druckmaschinen zum verlangsamten Ablegen von Bogen (11) auf einen Stapel (13) mittels Greifern (7), welche an Greiferwagen angeordnet sind, und die mittels endloser Ketten (1) über eine Kettenradtrommel (2) und ein Kettenumlenkrad (3) umlaufen, dadurch gekennzeichnet, daß sich die Greifer (7) auf einem Schlitten (18) befinden, welcher in Führungen (17) gegen die Kraft einer Feder entgegen der Laufrichtung (A) der Transportkette (1) verschiebbar auf Schildern (14) einer Greifereinheit (4) angeordnet ist, daß zwei durch ein Gelenk miteinander verbundene Koppeln (26) jeweils auf dem Schild (14) und dem Schlitten (18) gelagert und im Kniegelenk über eine Kurvenrolle (27) gegen eine Kurve betätigbar sind.Controllable gripper unit (4) for sheet delivery in printing machines for the slow depositing of sheets (11) on a stack (13) by means of grippers (7), which are arranged on gripper carriages, and by means of endless chains (1) via a sprocket drum (2) and circulate a chain deflection wheel (3), characterized in that the grippers (7) are located on a carriage (18) which is displaceable on labels in guides (17) against the force of a spring against the direction of travel (A) of the transport chain (1) (14) a gripper unit (4) is arranged in such a way that two couplings (26) connected to one another by a joint are each mounted on the shield (14) and the slide (18) and can be actuated against a curve in the knee joint via a cam roller (27) . Steuerbare Greifereinheit nach Anspruch 1, dadurch gekennzeichnet, daß die Feder als Zugfeder (25), Druckfeder (32) oder Gasfeder ausgebildet ist.Controllable gripper unit according to claim 1, characterized in that the spring is designed as a tension spring (25), compression spring (32) or gas spring. Steuerbare Greifereinheit nach Anspruch 1, dadurch gekennzeichnet, daß dem die Koppeln (26) verbindenden Gelenk eine Schenkelfeder zugeordnet ist.Controllable gripper unit according to claim 1, characterized in that a leg spring is associated with the joint connecting the couplers (26). Steuerbare Greifereinheit nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß die Kurve aus einer festen Kurve (29) besteht, deren Einlaufkurve (31) und Auslaufkurve (31') einen entgegengesetzten Verlauf besitzt, daß der Anfang der Kurven (31; 31') jeweils zum gleichen Zeitpunkt mit einer Kurvenrolle (27; 27') einer Greifereinheit (4; 4') in Wirkverbindung steht.Controllable gripper unit according to claims 1 to 3, characterized in that the curve consists of a fixed curve (29), the inlet curve (31) and Run-out curve (31 ') has an opposite course so that the beginning of the curves (31; 31') is in operative connection with a curve roller (27; 27 ') of a gripper unit (4; 4') at the same time. Steuerbare Greifereinheit nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß die Kurve aus einer festen Kurve (28) und einem verstellbaren Kurventeil (34) besteht.Controllable gripper unit according to claims 1 to 4, characterized in that the curve consists of a fixed curve (28) and an adjustable curve part (34). Steuerbare Greifereinheit nach Anspruch 1 bis 5, dadurch gekennzeichnet, daß das verstellbare Kurventeil (34) durch ein Stellelement (35) betätigbar ist.Controllable gripper unit according to claims 1 to 5, characterized in that the adjustable cam part (34) can be actuated by an adjusting element (35). Steuerbare Greifereinheit nach Anspruch 6, dadurch gekennzeichnet, daß das Stellelement (35) aus einem Stellmotor, einem Pneumatikzylinder oder Hydraulikzylinder besteht.Controllable gripper unit according to claim 6, characterized in that the adjusting element (35) consists of an actuator, a pneumatic cylinder or hydraulic cylinder. Steuerbare Greifereinheit nach Anspruch 6 und 7, dadurch gekennzeichnet, daß das Stellelement (35) drehzahlabhängig über die Maschinensteuerung ansteuerbar ist.Controllable gripper unit according to claims 6 and 7, characterized in that the adjusting element (35) can be controlled in a speed-dependent manner via the machine control. Steuerbare Greifereinheit nach Anspruch 6, dadurch gekennzeichnet, daß das Stellelement (35) aus einer Stellspindel besteht und manuell betätigbar ist.Controllable gripper unit according to claim 6, characterized in that the adjusting element (35) consists of an adjusting spindle and can be operated manually.
EP92109269A 1991-06-11 1992-06-02 Controllable gripper unit in printing machines Expired - Lifetime EP0518181B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4119188A DE4119188C1 (en) 1991-06-11 1991-06-11
DE4119188 1991-06-11

Publications (2)

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EP0518181A1 true EP0518181A1 (en) 1992-12-16
EP0518181B1 EP0518181B1 (en) 1995-09-13

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ID=6433668

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92109269A Expired - Lifetime EP0518181B1 (en) 1991-06-11 1992-06-02 Controllable gripper unit in printing machines

Country Status (5)

Country Link
US (1) US5179900A (en)
EP (1) EP0518181B1 (en)
JP (1) JPH0780296B2 (en)
DE (3) DE9116357U1 (en)
RU (1) RU2070113C1 (en)

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US4812033A (en) * 1985-02-26 1989-03-14 Canon Kabushiki Kaisha Ophthalmic apparatus
DE19516132C2 (en) * 1995-05-03 1997-04-17 Roland Man Druckmasch Sample sheet collection
DE19642804C2 (en) * 1996-10-17 2002-11-07 Heidelberger Druckmasch Ag Adjustment device for a gripper opening curve in a chain arm of a sheet-fed printing machine
DE102009008856B4 (en) 2008-03-10 2018-02-22 Heidelberger Druckmaschinen Ag sheet delivery
DE102008034763A1 (en) * 2008-07-25 2010-01-28 Heidelberger Druckmaschinen Ag Sheet punching and embossing machine i.e. flat bed sheet punching and embossing machine, operating method for machining sheet of e.g. paper, involves passing gripper bars through curved rail lines with specific speed profile
DE102010001805B4 (en) * 2010-02-11 2020-10-15 Koenig & Bauer Ag Device for depositing sheets in displays of sheet processing machines
JP2013039820A (en) * 2011-08-19 2013-02-28 Fujifilm Corp Apparatus and method for forming image
DE102012007606A1 (en) * 2012-04-16 2013-10-17 Heidelberger Druckmaschinen Aktiengesellschaft Method for sheet transfer and punching machine with gripper transport system
DE102013220052A1 (en) 2012-10-05 2014-04-10 Koenig & Bauer Aktiengesellschaft Delivery device for sheet printing machine, has sheet conveyed to leading edge gripper and trailing edge gripper carriages that are fixed to sheet stack, where trailing edge gripper carriage is connected to pulling unit through slots
JP2015059043A (en) * 2013-09-20 2015-03-30 大日本印刷株式会社 Paper discharge device and method thereof
DE102015218130B4 (en) * 2015-09-22 2019-02-14 Koenig & Bauer Ag Delivery devices and methods for controlling a storage of printing material sheet
US9840389B2 (en) * 2016-05-04 2017-12-12 Tecnau, Inc. Sheet stacker
US11174114B2 (en) * 2016-08-18 2021-11-16 Hewlett-Packard Development Company, L.P. Clamps
CN111645415B (en) * 2020-07-19 2021-02-12 深圳市汇亿丰印刷科技有限公司 Printing equipment for packaging carton and working method thereof

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US1513438A (en) * 1920-11-06 1924-10-28 Wallace S Warnock Printing press
US1551678A (en) * 1922-02-09 1925-09-01 American Bank Note Co Sheet-delivery mechanism for printing machines
GB589389A (en) * 1944-06-29 1947-06-19 Frank Romeo Belluche Sheet delivery mechanism for printing presses and kindred machines
DE2149151A1 (en) * 1970-10-29 1972-05-10 Polygraph Leipzig Sheet delivery device

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DE2040670B1 (en) * 1970-08-17 1971-08-05 Maschf Augsburg Nuernberg Ag Gripper control on chain arms of sheet-fed printing machines

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Publication number Priority date Publication date Assignee Title
US1513438A (en) * 1920-11-06 1924-10-28 Wallace S Warnock Printing press
US1551678A (en) * 1922-02-09 1925-09-01 American Bank Note Co Sheet-delivery mechanism for printing machines
GB589389A (en) * 1944-06-29 1947-06-19 Frank Romeo Belluche Sheet delivery mechanism for printing presses and kindred machines
DE2149151A1 (en) * 1970-10-29 1972-05-10 Polygraph Leipzig Sheet delivery device

Also Published As

Publication number Publication date
EP0518181B1 (en) 1995-09-13
DE59203636D1 (en) 1995-10-19
US5179900A (en) 1993-01-19
RU2070113C1 (en) 1996-12-10
JPH0780296B2 (en) 1995-08-30
DE4119188C1 (en) 1992-12-10
JPH05169629A (en) 1993-07-09
DE9116357U1 (en) 1992-07-30

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