EP0212366B1 - Spring-mounted gripper for sheet-fed rotary printing machines - Google Patents

Spring-mounted gripper for sheet-fed rotary printing machines Download PDF

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Publication number
EP0212366B1
EP0212366B1 EP86110488A EP86110488A EP0212366B1 EP 0212366 B1 EP0212366 B1 EP 0212366B1 EP 86110488 A EP86110488 A EP 86110488A EP 86110488 A EP86110488 A EP 86110488A EP 0212366 B1 EP0212366 B1 EP 0212366B1
Authority
EP
European Patent Office
Prior art keywords
gripper
sheet
finger
shaft
leaf springs
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
Application number
EP86110488A
Other languages
German (de)
French (fr)
Other versions
EP0212366A3 (en
EP0212366A2 (en
Inventor
Manfred Rüger
Valentin Gensheimer
Hans-Otto Haas
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.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen 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
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Priority to AT86110488T priority Critical patent/ATE46859T1/en
Publication of EP0212366A2 publication Critical patent/EP0212366A2/en
Publication of EP0212366A3 publication Critical patent/EP0212366A3/en
Application granted granted Critical
Publication of EP0212366B1 publication Critical patent/EP0212366B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B41F21/10—Combinations of transfer drums and grippers
    • B41F21/104—Gripper details

Definitions

  • the invention relates to a resilient gripper for sheet-fed rotary printing machines according to the preamble of the first claim.
  • DD-PS-66 634 From DD-PS-66 634 it is known to support a one-piece gripper lever on a gripper shaft and to adjust its pretensioning force by means of two compression springs.
  • the disadvantage is that the gripper lever loses its statically determined position if the most possible possible compensation of the bearing force is to be achieved. At very high machine speeds and increased preload forces, insufficient centering, e.g. B. due to spurious vibrations that are introduced into the machine, more possible.
  • Another disadvantage is the relatively large radius of inertia and the mass of the vibrating parts for initiating the holding process.
  • a gripper is known in which the axis of the gripper finger joint is pivotally mounted in a swivel joint parallel to the gripper shaft, the axis of the gripper finger joint being located approximately on the extension of a straight line pointing away from the gripper tip, which is the Support surface for the hook tip connects to the axis of the hook shaft.
  • the geometry shown in FIG. 1 shows that the force exerted by the gripper tip on the gripper support still has a component in the direction of sheet travel. As a result, there is still a risk of the arc shifting, as well as a possible torsion of the gripper shaft under high pretensioning forces, although an improvement over conventional grippers with a circular movement about the gripper shaft axis can be achieved.
  • a vertically closing gripper with a controlled gripper shaft is known from DE-PS-2 030 040.
  • a disadvantage is the frictional control of the gripper shaft relative to the fulcrum of a control lever by means of a guide on a control cam.
  • the additional control effort leads to an increase in the inertial forces of the system vibrating with a large radius of inertia and thus to a reduction in the performance of the printing press.
  • the control cam is heavily soiled, it is no longer possible to guide the second vertical movement phase exactly.
  • the object of the invention is to optimize a resilient gripper of the type mentioned with regard to the mass and the radii of inertia of the components and to give the gripper finger a slight pulling movement without play during the closing process.
  • the advantages of the solution according to the invention are that by deliberately bulging the two leaf springs 4, 5, their effective length can be slightly shortened. As a result, the holding effect is improved by an increased forced operation during a closing operation that takes place with a small pulling movement.
  • a soft gripper pad without bulging the gripper tip in an extended speed range with high pretensioning forces and overpressures in the direction of sheet travel, neither disturbing forces nor vibrations have an effect.
  • the gripper finger maintains its statically determined position and does not react so slowly.
  • There are also minimal gripper masses and minimal acceleration forces when using only two components, which act directly as a clamping piece and as a gripper finger sheet metal part. H. are connected to one another by clamping.
  • the gripper finger 2 cooperating with the gripper support 1 is formed in one piece as a sheet metal part by leaf springs 4, 5 which are prestressed via stop screw 9 and stop 13 and are elastically deformable.
  • the leaf springs 4, 5 are directly connected to a clamping piece 3, which consists of preformed sheet metal strips 11, 12 which are interlocked and which can be clamped on the gripper shaft 7 by means of a screw.
  • the clamping piece 3 is fastened on a gripper shaft 7 which can be arranged as deep as possible with a fixed axis within a cylinder 6.
  • the leaf springs 4, 5 provided as part of the gripper finger 2 have articulation points at the end which lie on a connecting line which runs through the fixed axis of the gripper shaft 7 and press the gripper finger 2 resiliently against the sheet 10 lying between the gripper support 1 and a gripper tip 8
  • the gripper finger 2 is under the pretension that can be regulated with the stop screw 9.
  • the leaf spring 4 is slightly S-shaped, while the leaf spring 5 cannot be significantly deformed, but overall the effective length is shortened.
  • the slight pulling movement of the gripper finger 2 avoids any sliding movement between the gripper tip 8 and the gripper support 1, without the elastic system being able to bulge indefinitely at high transverse forces, and at the same time brings about an improved dynamic behavior of the oscillating system because of the small number, mass and smaller radii of inertia of the components.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Discharge By Other Means (AREA)

Abstract

A resilient sheet gripper for a sheet-fed rotary printing press having a gripper finger resiliently connected to a clamping member secured to a gripper shaft is provided including prestressed spring strips for connecting the gripper finger to the clamping member with each spring strip having articulation points disposed along a line passing substantially through the axis of the gripper shaft.

Description

Die Erfindung betrifft einen federnden Greifer für Bogenrotationsdruckmaschinen nach dem Oberbegriff des ersten Patentanspruchs.The invention relates to a resilient gripper for sheet-fed rotary printing machines according to the preamble of the first claim.

Aus der CH-A-485 579 ist es bekannt, einen Greifer mittels Klemmstück an einer eine ortsfeste Achse aufweisenden schwenkbaren Greiferwelle zu lagern und einem Greiferfinger in einer ersten Bewegungsphase eine Kreisbewegung um die Greiferwellenachse und in einer zweiten Bewegungsphase eine in Bezug auf die Greiferauflage annähernd senkrechte Bewegung zu erteilen. Diese Greiferanordnung wirkt mit einer kraftschlüssig arbeitenden parallelen Blattfederanordnung zusammen.From CH-A-485 579 it is known to mount a gripper by means of a clamping piece on a swiveling gripper shaft having a fixed axis, and a gripper finger in a first movement phase a circular movement around the gripper shaft axis and in a second movement phase approximately with respect to the gripper support to give vertical movement. This gripper arrangement interacts with a non-positive parallel leaf spring arrangement.

Da nur eine mittelbare Verbindung des Greiferfingers mit dem Klemmstück über die zwei vorgespannten Blattfedern besteht, treten infolge schädlichen Lagerspiels in den vorhandenen Dreh- und Schubgelenken von Greiferbauteilen unbeherrschbare Bewegungen des Greiferfingers auf, ggf. Verschleiß in den Gelenken, insbesondere im Moment des Zugreifens. Gleiches gilt für den aus der DE-C-371 756 bekannten Greifer, weil der mit einer Blattfeder verbundene Greiferfinger lose drehbar auf der Greiferwelle sitzt. Passerprobleme sind die Folge.Since there is only an indirect connection between the gripper finger and the clamping piece via the two preloaded leaf springs, uncontrollable movements of the gripper finger occur in the existing rotary and thrust joints of gripper components as a result of harmful bearing play, possibly wear in the joints, especially when the gripper is gripped. The same applies to the gripper known from DE-C-371 756, because the gripper finger connected to a leaf spring is loosely rotatable on the gripper shaft. Registration problems are the result.

Aus der DD-PS-66 634 ist es bekannt, einen einteiligen Greiferhebel auf einer Greiferwelle abzustützen und dessen Vorspannkraft durch zwei Druckfedern einzustellen. Von Nachteil ist, daß der Greiferhebel seine statisch bestimmte Lage verliert, wenn eine möglichst vollständige Kompensation der Lagerkraft erreicht werden soll. Bei sehr hohen Maschinengeschwindigkeiten und erhöhten Vorspannkräften ist keine ausreichende Zentrierung, z. B. infolge Störschwingungen, die in die Maschine eingebracht werden, mehr möglich. Von Nachteil sind ferner der verhältnismäßig große Trägheitsradius und die Masse der schwingenden Teile für das Einleiten des Haltevorganges.From DD-PS-66 634 it is known to support a one-piece gripper lever on a gripper shaft and to adjust its pretensioning force by means of two compression springs. The disadvantage is that the gripper lever loses its statically determined position if the most possible possible compensation of the bearing force is to be achieved. At very high machine speeds and increased preload forces, insufficient centering, e.g. B. due to spurious vibrations that are introduced into the machine, more possible. Another disadvantage is the relatively large radius of inertia and the mass of the vibrating parts for initiating the holding process.

Aus der DE-OS-1 908 181 ist ein Greifer bekannt, bei dem die Achse des Greiferfingergelenkes in einem zur Greiferwelle parallelen Drehgelenk schwenkbar gelagert ist, wobei die Achse des Greiferfingergelenks annähernd auf der von der Greiferspitze wegweisenden Verlängerung einer Geraden gelegen ist, welche die Abstützfläche für die Greiferspitze mit der Achse der Greiferwelle verbindet. Aus der in Fig. 1 gezeigten Geometrie geht hervor, daß die von der Greiferspitze auf die Greiferauflage ausgeübte Kraft weiterhin eine Komponente in Bogenlaufrichtung aufweist. Die Gefahr des Verschiebens des Bogens besteht dadurch, sowie durch eine mögliche Torsion der Greiferwelle bei hohen Vorspannkräften auch weiterhin, wenn auch eine Verbesserung gegenüber üblichen Greifern mit kreisförmiger Bewegung um die Greiferwellenachse erreichtbar ist.From DE-OS-1 908 181 a gripper is known in which the axis of the gripper finger joint is pivotally mounted in a swivel joint parallel to the gripper shaft, the axis of the gripper finger joint being located approximately on the extension of a straight line pointing away from the gripper tip, which is the Support surface for the hook tip connects to the axis of the hook shaft. The geometry shown in FIG. 1 shows that the force exerted by the gripper tip on the gripper support still has a component in the direction of sheet travel. As a result, there is still a risk of the arc shifting, as well as a possible torsion of the gripper shaft under high pretensioning forces, although an improvement over conventional grippers with a circular movement about the gripper shaft axis can be achieved.

Ein senkrecht schließender Greifer mit einer gesteuerten Greiferwelle ist aus der DE-PS-2 030 040 bekannt. Von Nachteil ist die kraftschlüssige Steuerung der Greiferwelle relativ zum Drehpunkt eines Steuerhebels mittels einer Führung auf einer Steuerkurve. Der zusätzliche Steuerungsaufwand führt zu einer Erhöhung der Massenkräfte des mit großem Trägheitsradius schwingenden Systems und damit zu einer Verminderung des Leistungsvermögens der Druckmaschine. Außerdem ist bei größeren Verschmutzungen der Steuerkurve keine exakte Führung der zweiten senkrechten Bewegungsphase mehr möglich.A vertically closing gripper with a controlled gripper shaft is known from DE-PS-2 030 040. A disadvantage is the frictional control of the gripper shaft relative to the fulcrum of a control lever by means of a guide on a control cam. The additional control effort leads to an increase in the inertial forces of the system vibrating with a large radius of inertia and thus to a reduction in the performance of the printing press. In addition, if the control cam is heavily soiled, it is no longer possible to guide the second vertical movement phase exactly.

Ferner ist es aus der DE-OS-3 130 689 bekannt, in Verbindung mit einer weichen Greiferauflage einen eine flache Greiferflugbahn ausführenden und in der letzten Bewegungsphase senkrecht schließenden Greiferfinger mit einer in dem Greiferfinger angeordneten und gegen den Bogengreiferaufschlag wirkenden federnden Anschlagschraube zu versehen. Eine weitere Stellschraube ist erforderlich, um federnd miteinander gekoppelte Halter einzustellen, mittels denen der Greiferfinger der Greiferwelle zugeordnet ist. Von Nachteil ist, daß der Greiferfinger einer weichen Greiferauflage zugeordnet werden muß und an zwei Stellschrauben umständliche Einstellungen erforderlich sind um eine lagegenaue Übergabe zu erreichen. Bei höheren Maschinengeschwindigkeiten wird der Schließvorgang unsauber eingeleitet.Furthermore, it is known from DE-OS-3 130 689 to provide, in conjunction with a soft gripper pad, a gripper finger that executes a flat gripper trajectory and closes vertically in the last movement phase with a resilient stop screw arranged in the gripper finger and acting against the bow gripper impact. A further set screw is required in order to set resiliently coupled holders by means of which the gripper finger is assigned to the gripper shaft. The disadvantage is that the gripper finger must be assigned to a soft gripper pad and cumbersome adjustments are required on two adjusting screws in order to achieve an accurate transfer. The closing process is initiated improperly at higher machine speeds.

Der Erfindung liegt die Aufgabe zugrunde, einen federnden Greifer genannter Art hinsichtlich der Masse und der Trägheitsradien der Bauteile zu optimieren und beim Schließvorgang dem Greiferfinger spielfrei eine geringe Zugbewegung zu erteilen.The object of the invention is to optimize a resilient gripper of the type mentioned with regard to the mass and the radii of inertia of the components and to give the gripper finger a slight pulling movement without play during the closing process.

Die Aufgabe wird durch die kennzeichnenden Merkmale des ersten Patentanspruchs gelöst. Weiterbildungen der Erfindung ergeben sich aus dem Unteranspruch, der Zeichnung und der Beschreibung.The object is achieved by the characterizing features of the first claim. Further developments of the invention result from the subclaim, the drawing and the description.

Die Vorteile der erfindungsgemäßen Lösung bestehen darin, daß durch ein gezieltes Ausbeulen der beiden Blattfedern 4, 5 sich deren wirksame Länge geringfügig verkürzen läßt. Dadurch wird der Halteeffekt durch einen erhöhten Zwangslauf bei einem mit geringer Zugbewegung erfolgenden Schließvorgang verbessert. Unabhängig von einer weichen Greiferauflage wirken sich ohne Ausbeulen der Greiferspitze in einem erweiterten Geschwindigkeitsbereich bei hohen Vorspannkräften und Überdrückungen in Bogenlaufrichtung weder störende Kräfte noch Schwingungen aus. Der Greiferfinger behält seine statisch bestimmte Lage und reagiert nicht so träge. Es ergeben sich ferner minimale Greifermassen und minimale Beschleunigungskräfte bei Verwendung von nur zwei Bauteilen, die als Klemmstück und als Greiferfingerblechformteil unmittelbar, d. h. durch Einspannen miteinander verbunden sind.The advantages of the solution according to the invention are that by deliberately bulging the two leaf springs 4, 5, their effective length can be slightly shortened. As a result, the holding effect is improved by an increased forced operation during a closing operation that takes place with a small pulling movement. Regardless of a soft gripper pad, without bulging the gripper tip in an extended speed range with high pretensioning forces and overpressures in the direction of sheet travel, neither disturbing forces nor vibrations have an effect. The gripper finger maintains its statically determined position and does not react so slowly. There are also minimal gripper masses and minimal acceleration forces when using only two components, which act directly as a clamping piece and as a gripper finger sheet metal part. H. are connected to one another by clamping.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand einer Zeichnung näher beschrieben.An embodiment of the invention is described below with reference to a drawing.

Hierzu zeigt:

  • Fig. 1 eine Seitenansicht eines erfindungsgemäßen Greiferfingers im Prinzip,
  • Fig. 2 eine Draufsicht auf Fig. 1,
  • Fig. 3 eine Seitenansicht eines erfindungsgemäß konstruierten Greifers.
This shows:
  • 1 is a side view of a gripper finger according to the invention in principle,
  • 2 is a plan view of FIG. 1,
  • Fig. 3 is a side view of a gripper constructed according to the invention.

Gemäß einer in der Zeichnung in Fig. 3 dargestellten konstruktiven Ausführung der Erfindung ist der mit der Greiferauflage 1 zusammenarbeitende Greiferfinger 2 einstückig als Blechformteil durch über Anschlagschraube 9 und Anschlag 13 vorgespannte Blattfedern 4, 5 sind gebildet, die elastisch verformbar sind. Die Blattfedern 4, 5 sind unmittelbar mit einem Klemmstück 3 fest verbunden, welches aus vorgeformten ineinander gehängten Blechstreifen 11, 12 besteht, die mittels einer Schraube auf der Greiferwelle 7 klemmbar sind.According to a constructive embodiment of the invention shown in the drawing in FIG. 3, the gripper finger 2 cooperating with the gripper support 1 is formed in one piece as a sheet metal part by leaf springs 4, 5 which are prestressed via stop screw 9 and stop 13 and are elastically deformable. The leaf springs 4, 5 are directly connected to a clamping piece 3, which consists of preformed sheet metal strips 11, 12 which are interlocked and which can be clamped on the gripper shaft 7 by means of a screw.

Das Klemmstück 3 ist auf einer Greiferwelle 7 befestigt, welche mit ortsfester Achse innerhalb eines Zylinders 6 möglichst tief angeordnet werden kann. Die als Bestandteil des Greiferfingers 2 vorgesehenen Blattfedern 4, 5 weisen am Ende Anlenkpunkte auf, die auf einer Verbindungslinie liegen, welche durch die ortsfeste Achse der Greiferwelle 7 verläuft und drücken den Greiferfinger 2 nachgiebig gegen den zwischen Greiferauflage 1 und einer Greiferspitze 8 liegenden Bogen 10. Im geöffneten Zustand steht der Greiferfinger 2 unter der mit der Anschlagschraube 9 regulierbaren Vorspannung. Beim Schließen des Greifers erfolgt eine leicht S-förmige Verformung der Blattfeder 4, während die Blattfeder 5 nicht nennenswert verformt werden kann, insgesamt aber eine Verkürzung der wirksamen Länge. Die geringe Zugbewegung des Greiferfingers 2 vermeidet jede Schiebebewegung zwischen Greiferspitze 8 und Greiferauflage 1, ohne daß bei großen Querkräften das elastische System undefiniert ausbeulen kann und bewirkt zugleich ein verbessertes dynamisches Verhalten des schwingenden Systems wegen der geringen Anzahl, Masse und kleineren Trägheitsradien der Bauteile.The clamping piece 3 is fastened on a gripper shaft 7 which can be arranged as deep as possible with a fixed axis within a cylinder 6. The leaf springs 4, 5 provided as part of the gripper finger 2 have articulation points at the end which lie on a connecting line which runs through the fixed axis of the gripper shaft 7 and press the gripper finger 2 resiliently against the sheet 10 lying between the gripper support 1 and a gripper tip 8 In the open state, the gripper finger 2 is under the pretension that can be regulated with the stop screw 9. When the gripper closes, the leaf spring 4 is slightly S-shaped, while the leaf spring 5 cannot be significantly deformed, but overall the effective length is shortened. The slight pulling movement of the gripper finger 2 avoids any sliding movement between the gripper tip 8 and the gripper support 1, without the elastic system being able to bulge indefinitely at high transverse forces, and at the same time brings about an improved dynamic behavior of the oscillating system because of the small number, mass and smaller radii of inertia of the components.

BezugszeichenlisteReference symbol list

  • 1 Greiferauflage1 gripper pad
  • 2 Greiferfinger2 gripper fingers
  • 3 Klemmstück3 clamping piece
  • 4 Blattfeder4 leaf springs
  • 5 Blattfeder5 leaf spring
  • 6 Zylinder6 cylinders
  • 7 Greiferwelle7 gripper shaft
  • 8 Greiferspitze8 gripper tip
  • 9 Anschlagschraube9 stop screw
  • 10 Bogen10 sheets
  • 11 Blechstreifen11 metal strips
  • 12 Blechstreifen12 metal strips
  • 13 Anschlag13 stop

Claims (2)

1. Resiliently mounted gripper for sheet for fed rotary printing presses which consists of a clamping piece (3) carrying out a rotational movement which is fixed on a gripper shaft (7) mounted with fixed position axis within a cylinder (6) or a drum and has a gripper finger (2) which is connected with the clamping piece (3) directly via two pretensioned leaf springs (4, 5), characterised in that both of the leaf springs (4, 5) are directly connected with the clamping piece (3), that both of the leaf springs (4, 5) are components of a gripper finger (2) constructed as a resiliently mounted sheet metal formed part (Fig. 3) and that the ends of each leaf spring (4, 5) lie on a connection line which runs through the positionally fixed axis of the gripper shaft (7). 3
2. Resiliently mounted gripper according to Claim 1, characterised in that the leaf springs (4, 5) can be. pretensioned by means of stop screw (9) and stop (13).
EP86110488A 1985-08-19 1986-07-30 Spring-mounted gripper for sheet-fed rotary printing machines Expired EP0212366B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86110488T ATE46859T1 (en) 1985-08-19 1986-07-30 RESILIENT GRIPPER FOR SHEET ROTARY PRINTING MACHINES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853529612 DE3529612A1 (en) 1985-08-19 1985-08-19 SPRING GRIPPER FOR ARC ROTATION PRINTING MACHINES
DE3529612 1985-08-19

Publications (3)

Publication Number Publication Date
EP0212366A2 EP0212366A2 (en) 1987-03-04
EP0212366A3 EP0212366A3 (en) 1987-11-04
EP0212366B1 true EP0212366B1 (en) 1989-10-04

Family

ID=6278821

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86110488A Expired EP0212366B1 (en) 1985-08-19 1986-07-30 Spring-mounted gripper for sheet-fed rotary printing machines

Country Status (5)

Country Link
US (1) US4719854A (en)
EP (1) EP0212366B1 (en)
JP (1) JPS6251448A (en)
AT (1) ATE46859T1 (en)
DE (1) DE3529612A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3806526A1 (en) * 1988-03-01 1989-09-14 Heidelberger Druckmasch Ag DEVICE FOR TENSIONING FLEXIBLE PRINTING PLATES ON THE PLATE CYLINDER OF ROTARY PRINTING MACHINES
DE4101987A1 (en) * 1991-01-24 1992-07-30 Roland Man Druckmasch Sheet gripper for rotary printing machine - has self-aligning claw attached by leaf spring to gripper finger
DE4127713C2 (en) * 1991-08-22 1996-03-21 Koenig & Bauer Albert Ag Grippers for sheet-fed rotary printing machines
GB2268928B (en) * 1992-07-22 1995-10-18 Heidelberger Druckmasch Ag Sheet gripper for a paper-carrying cylinder of a sheet-fed printing press
DE19816512B4 (en) * 1997-08-18 2008-08-28 Heidelberger Druckmaschinen Ag Sheet gripper in a sheet-fed rotary printing machine
CN101024328B (en) * 2006-02-20 2010-12-15 海德堡印刷机械股份公司 Sheet-transporting apparatus
DE102007005958B4 (en) * 2006-02-20 2015-07-16 Heidelberger Druckmaschinen Ag Device for sheet transport
DE102009027508A1 (en) * 2009-07-07 2011-01-20 Manroland Ag Grip arm for sheet-handling machine, has longitudinal strut lying against gripper segment, where relative movement between longitudinal strut and cross member takes place by force acting on longitudinal strut

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD66634A (en) *
DE371756C (en) * 1923-03-21 Schnellpressenfabrik Act Ges H On the gripper rod rotatably arranged gripper for attaching and depositing devices as well as for printing cylinders on printing machines
DD67992A (en) *
DE356241C (en) * 1920-02-22 1922-07-18 Maschf Augsburg Nuernberg Ag Gripper for the printing cylinders of printing machines
DE670298C (en) * 1937-02-28 1939-01-16 Albert Schnellpressen Sheet gripper for printing machines loosely arranged on a pivoting spindle
US2378478A (en) * 1943-02-18 1945-06-19 Goss Printing Press Co Ltd Printing press gripper mechanism
US2906204A (en) * 1957-06-24 1959-09-29 Cottrell Company Gripper assemblies
US2935937A (en) * 1957-10-29 1960-05-10 Davidson Corp Plate clamp for printing machine
US3044771A (en) * 1960-04-18 1962-07-17 Harris Intertype Corp Sheet handling cylinder
AT298522B (en) * 1968-02-21 1972-04-15 Polygraph Leipzig DEVICE FOR CLAMPING MATERIAL SHEETS
US3536321A (en) * 1968-06-13 1970-10-27 Planeta Veb Druckmasch Werke Device for clamping sheet material
DE1908181A1 (en) * 1969-02-19 1970-11-05 Roland Offsetmaschf Clamp gripper for sheet-fed rotary printing machines
US3606308A (en) * 1969-06-20 1971-09-20 Miller Printing Machinery Co Sheet gripping device
ES230780Y (en) * 1977-08-26 1978-07-01 CLAMP AND CLAMP ASSEMBLY FOR THE TRANSPORT OF SHEETS IN LITHOGRAPHIC MACHINES.
DD154083A1 (en) * 1980-11-17 1982-02-24 Arndt Jentzsch ARCH OVERALL DEVICE
EP0073955B1 (en) * 1981-09-04 1985-11-13 Motter Printing Press Co. Gripper for sheet handling equipment
US4647031A (en) * 1985-07-22 1987-03-03 The Dow Chemical Company Gripper finger device

Also Published As

Publication number Publication date
JPH0530383B2 (en) 1993-05-07
US4719854A (en) 1988-01-19
EP0212366A3 (en) 1987-11-04
JPS6251448A (en) 1987-03-06
ATE46859T1 (en) 1989-10-15
DE3529612A1 (en) 1987-02-26
DE3529612C2 (en) 1990-01-18
EP0212366A2 (en) 1987-03-04

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