EP0570689B1 - Dispositif pour tendre un cliché d'impression sur le cylindre porte-plaque d'une machine à imprimer, particulièrement une machine à imprimer offset des feuilles - Google Patents

Dispositif pour tendre un cliché d'impression sur le cylindre porte-plaque d'une machine à imprimer, particulièrement une machine à imprimer offset des feuilles Download PDF

Info

Publication number
EP0570689B1
EP0570689B1 EP93105471A EP93105471A EP0570689B1 EP 0570689 B1 EP0570689 B1 EP 0570689B1 EP 93105471 A EP93105471 A EP 93105471A EP 93105471 A EP93105471 A EP 93105471A EP 0570689 B1 EP0570689 B1 EP 0570689B1
Authority
EP
European Patent Office
Prior art keywords
tensioning rail
plate
tensioning
cylinder
rail
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP93105471A
Other languages
German (de)
English (en)
Other versions
EP0570689A1 (fr
Inventor
Georg Hartung
Helmut Schild
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
Publication of EP0570689A1 publication Critical patent/EP0570689A1/fr
Application granted granted Critical
Publication of EP0570689B1 publication Critical patent/EP0570689B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1218—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices
    • B41F27/1225—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end substantially rectilinearly
    • B41F27/1243—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end substantially rectilinearly by pivotal or swivelling motion, e.g. by means of a rocking lever

Definitions

  • the invention relates to a device for clamping printing plates on the plate cylinder of printing presses, in particular sheetfed offset printing presses, according to the preamble of claim 1.
  • a printing plate is fastened to the plate cylinder by means of tensioning rails arranged in a cylinder channel and assigned to the printing start and the printing end by first inserting (clamping) the printing start of the printing plate into the corresponding tensioning rail and then also clamping the printing end in the second tensioning rail and then is stretched with force.
  • tensioning rails arranged in a cylinder channel and assigned to the printing start and the printing end by first inserting (clamping) the printing start of the printing plate into the corresponding tensioning rail and then also clamping the printing end in the second tensioning rail and then is stretched with force.
  • DE 3 940 795 C2 From DE 3 940 795 C2, DE 3 940 796 C2 and EP 0 431 575 A2 systems for automatic printing plate change are known, in which the removal of an old printing plate and the mounting of a new printing plate from or to the plate cylinder takes place automatically.
  • these systems In addition to storage and receiving areas for the printing plates, these systems also have transport devices for supplying or removing a new or old printing plate while the plate cylinder is being rotated in the corresponding direction.
  • the pressure plates are attached by means of clamping rails the plate cylinder, which, as indicated in the individual documents, have remotely operable devices for the appropriate clamping or clamping.
  • the printing plates to be newly supplied have a bevel at the end of the print and this bevel is inserted into a radial gap between two clamping pieces. For clamping and ultimately also for tensioning, these two clamping pieces are then pivoted in an almost azimuthal direction by an eccentric shaft.
  • the disadvantage here is that the printing plates to be newly fed are to be bent at their printing end by a special device. This bending must be done very carefully, as possible. Waviness in the bent area can lead to canting and thus lead to problems when inserting it into the gap of the tensioning rail. Because of the problems to be feared due to ripples, used printing plates are hardly likely to be fed with such a system. A folded end of the print is also not easily conveyed by a transport system with a nip.
  • non-folded printing plates can be used because of the specially designed printing end clamping rails.
  • the clamping flaps causing the detection have a specially arranged pivot pole, which is known from DE 3 626 936 C1.
  • a clamping flap causing this allows the printing end of the printing plate to be placed on a lower clamping device, but results in a relatively large pivoting angle of the clamping flap. It is disadvantageous here that such a clamping flap pivoted into the open position protrudes correspondingly far out of the circumference of the circle of the plate cylinder and thus a pressure roller which causes the pressure plate to be placed on it is hindered.
  • DE-GM 6 941 597 describes a tensioning rail of a plate cylinder of printing machines which is assigned to the printing end of a printing plate known, which consists of two relatively movable clamping pieces through which the printing end of the printing plate can be detected.
  • This clamping rail consisting of the two clamping pieces, is pivotally mounted for clamping about an axis running parallel to the plate cylinder.
  • a disadvantage of the described device is that it is not possible to interact with automatic printing plate changing systems.
  • the object of the present invention is to develop a device for clamping printing plates on the plate cylinder of printing machines according to the preamble of claim 1 in such a way that simple and safe insertion of the printing end of the printing plate into the corresponding tensioning rail ensures just when interacting with an automatic printing plate changing system is.
  • the tensioning rail according to the invention can be pivoted about one of two axes running parallel to the plate cylinder, depending on the swivel position.
  • the detection area of the tensioning rail which is designed as a gap, thus executes a curved path with two radii of curvature up to a position in which the pressure plate is completely gripped in order to insert the pressure plate.
  • the pressure plate is then clamped by closing the gap, in that the lower and the upper clamping piece are braced against one another or, in the case of a self-locking clamping device, after the gap has been closed and during a first Pressure plate tensioning phase.
  • the detection area of the clamping rail is now pivoted about the axis that results in the small pivot radius of the gap. This pivoting movement continues until the necessary tensile force is exerted on the pressure end of the pressure plate.
  • the gap for the detection of the pressure plate end can thus be pivoted over an overall large distance without one or more spring (s) applying the tension force for the pressure plate having to be excessively overpressed (spring force to be stored by an actuating element).
  • the tensioning rail according to the invention simplifies the mounting of a new pressure plate considerably, since its trailing end does not have to be inserted into the detection area of the tensioning rail designed as a gap, but rather the pressure end of the pressure plate is detected by the described pivoting movement of the tensioning rail.
  • the pressure plate attached to the start of the print on the plate cylinder and drawn up according to its length around its circumference must therefore only be placed flat in the area of the print end, so that the subsequent pivoting of the tensioning rail then ensures that the trailing end of the pressure plate is securely gripped.
  • the printing end of the printing plate can be placed either by hand or when using the tensioning rail according to the invention in connection with an automatic printing plate changing system by means of a corresponding pressure roller.
  • the pressure roller with a certain force applied to the plate cylinder and then rotated the plate cylinder into a corresponding position.
  • the pressure plate can be gripped securely by pivoting the tensioning rail.
  • the force to be used to tension the pressure plate is applied by at least one spring, in particular a compression spring.
  • spring means such as torsion bars or leaf springs can also be used.
  • the compression spring which is preferably to be selected, is supported at one end in a cylinder-fixed manner and is articulated at its other end with a corresponding pretension via a pull rod on the upper clamping piece. The articulation and the set preload is such that the tensioning rail is pivoted into an open position.
  • an actuating shaft arranged in the cylinder channel and running parallel to the cylinder axis is provided, which is articulated, for example, via a lever arm and a bracket in the manner of a toggle lever mechanism on the upper clamping piece of the tensioning rail.
  • the tensioning rail arranged in the cylinder channel is divided into several identical sections and each section is pivotally mounted in the manner described and is provided with a spring means for tensioning.
  • the application of the clamping force is thus carried out in sections at the end of the printing plate, so that automatic alignment is possible, especially with a large printing plate format, and for example register corrections can also be made by changing the position of a front clamping rail.
  • the spring means assigned to the individual sections can be used for Register corrections are preloaded accordingly. As a result, an asymmetrical or one-sided warping of the pressure plate in the circumferential direction can be deliberately caused.
  • the section-by-section subdivision of the tensioning rail results in a modular system, so that plate cylinders must be equipped with a corresponding number of sections in accordance with the printing plate format to be provided.
  • the 3B format for example, seven identical sections of the tensioning rail can be provided.
  • An actuation shaft and also a clamping shaft are provided for the sections of the tensioning rail of the same design, the latter being guided through all the sections.
  • the common actuating shaft acts on a corresponding number of lever arms and tabs on the individual sections.
  • the rotation of the common clamping shaft and the actuating shaft can be carried out by motors arranged in the plate cylinder, for example compressed air motors.
  • one or more actuating devices are fixedly arranged on the frame of the printing press, which act on the shafts in a specific positioning of the plate cylinder via couplings or lever arms.
  • the tensioning rail designated overall by 1, consists of an upper and a lower clamping piece 2, 3, which are arranged in the cylinder channel 4 so that they can pivot from the plate cylinder 5.
  • the upper clamping piece 2 has the profile shown.
  • the lower clamping piece 3 essentially has a U-shaped profile and is connected, for example, to the upper clamping piece 2 with one or more retaining screws 6, so that the lower clamping piece 3 is displaceable in the plane of the drawing relative to the upper clamping piece 2.
  • This mobility is achieved, for example, by the spherical head of the retaining screw 6 and by appropriate dimensioning of bores in the clamping pieces 2, 3 (indicated by dashed lines in FIG. 1).
  • the upper outer flank of the lower clamping piece 3 and a straight surface of the upper clamping piece 2 form the clamping surfaces 7, 8 of the gap 9 for the pressure end of the printing plate 10 to be detected. Due to the described displaceability of the lower clamping piece 3 relative to the upper clamping piece 2, one can be inserted into the Gap 9 inserted pressure plate 10 with the clamping surfaces 7, 8 are detected or clamped.
  • the upper clamping piece 2 has a prismatic edge 11 in a side facing the bottom of the cylinder channel 4 and approximately diametrically to the position of the corresponding clamping surface 7.
  • This edge 11 is assigned a stop 12, which is arranged in a cylinder-fixed manner on the bottom of the cylinder channel 4 and against which the edge 11 of the upper clamping piece 2 lies in the position according to FIG.
  • the upper clamping piece 2 with the lower clamping piece 3 can thus be pivoted about the pivot axis A formed by the edge 11 and the cylinder-fixed stop 12.
  • the swivel radius from the gap 9 corresponds approximately to the distance between the clamping surface 7 and the edge 11.
  • the length of the tensioning rail 1 is divided into several sections 13 of the same type, each having a section as shown in FIGS. 1 to 3.
  • one end of a pull rod 14 is articulated on the upper clamping piece 2, which is oriented in the direction of the cylinder body and at the other end, for example via a plate 15 with a corresponding thread, engages a prestressed compression spring 16 (FIG. 1).
  • Compression spring 16 extends essentially coaxially to the tie rod 14 and is supported with its other end on a base plate 17 which is attached, for example by means of screws, to the bottom of cylinder channel 4 and has the stop 12.
  • the prestressing force of compression spring 16 can be adjustable via threads on tie rod 14 and plate 15.
  • a support surface 18 is arranged, by means of which the upper clamping piece 2 is supported on the base plate 17 precisely by the force of the compression spring 16 in the position according to FIG. 1. This position is exactly the one in which the tensioning rail 1 is fully open and thus defined by the angle of the support surface 18 with respect to the clamping surface 7.
  • actuating shaft 19 mounted in the cylinder channel 4, which, as shown in FIGS. 1 to 4, is articulated to the clamping pieces 2 in each section 13 via a lever arm 20 and bracket 21. This articulation takes place here, as can be seen in particular in FIG. 4, via two webs 2.1 attached to the rear of the upper clamping piece 2, which have the edge 11 of the pivot axis A and the support surface 18 according to FIGS. 1-3.
  • each section 13 of the tensioning rail 1 is assigned a bearing plate 22 on both sides, which is shown again in a reduced form in FIG. 5.
  • Each bearing plate 22 has on both sides a stop 23 forming the pivot axis B in the form of a cylindrical pin 23.1, about which the upper clamping piece 2 can be pivoted against the force of the compression spring 16.
  • the bearing plates 22 at the format limits have only one pin 23.1 on the side on which a section 13 of the tensioning rail 1 is also provided.
  • the upper clamping piece 2 has a contour 24 approximately in its central profile area, which corresponds in dimension to that of the pin 23.1 (FIGS. 1-3).
  • the contour 24 is attached to both ends of a section 13 in the upper clamping piece 2 such that when the upper clamping piece 2 is pivoted about the pivot axis A of the edge 11 or stop 12 it bears against the pin 23.1 of the bearing plates 22 after a certain pivoting angle. As the actuating shaft 19 continues to rotate, the upper clamping piece 2 is pivoted about an axis of the pins 23.1.
  • the edge 11 lifts off the stop 12; the swivel radius of gap 9 now essentially corresponds to the distance between the clamping surface 7 and the axis of the pin 23.1 and is smaller than that of the previous swivel angle.
  • the tensioning rail 1 can be pivoted via the actuating shaft 19 into a position according to FIG. 2. The end position of this swivel angle results either from a mechanical stop or the extended position of the toggle mechanism 20, 21.
  • the lower clamping piece 3 can be displaced with respect to the upper clamping piece 2 via a clamping shaft 25 and can be adjusted with force to the clamping surface 7.
  • Clamping shaft 25 has a cylindrical profile with a flattened side and is inserted in a correspondingly profiled recess 25.1 in a lower part of the upper clamping piece 2.
  • a strip 26 with a trapezoidal profile which has one or more bores for the passage of the retaining screws 6 (not shown).
  • the upper surface of the strip 26 acts with a roller 27 and an inner surface of the lower clamping piece 3 together like an inclined plane.
  • the lower clamping piece 3 can additionally perform a movement in the direction of the clamping surfaces 7, 8.
  • a tension exerted on the lower clamping piece 3 in the detection area 9 thus causes the bar 26 and the roller 27 to generate or increase the clamping force.
  • the detection area 9 is opened, for which purpose the lower clamping piece 3 can in turn be reset to a starting position by spring means (not shown).
  • All sections 13 of the tensioning rail 1 or the upper clamping pieces 2 are actuated by a clamping shaft 25 which is in particular continuous (FIG. 4).
  • the pivot shaft 25 is able to compensate for any deviations from the pivoting positions of the individual sections 13 by corresponding deformations in the longitudinal direction.
  • the clamping shaft 25 can also be provided between the sections 13 in the region of the bearing plates 22 with compensating couplings.
  • the bearing plates 22 provided between the individual sections 13 have two bores 28, 29 in addition to the journals 23, bore 28 serving to carry out the clamping shaft 25 and being dimensioned in accordance with the possible pivot position and bore 29 serving, for example, to support the actuating shaft 19 in sections ( 4 and 5).
  • two adjacent sections 13 of the tensioning rail 1 are each connected in the area above the bearing plates 22 with a threaded spindle 31, which is formed in the central area, for example as a hexagon, and has a right and a right at both ends Has left-hand thread.
  • the printing plate 10 is completely pulled up on the plate cylinder 5 by its rotation and the printing end of the printing plate 10 is placed, for example, by a pressure roller 30 (dashed in FIG. 1) in the region of the tensioning rail 1 pivoted into the fully open position.
  • the lower clamping piece 3 On a side facing the pressure plate 10, the lower clamping piece 3 additionally has a support surface 9.1 in the form of a bevelled continuation of the clamping surface 8.
  • FIG. 6 corresponds to the fully open position
  • FIG. 8 to the fully advanced position
  • FIG. 7 to the position in which the pivot axes A, B are changed.
  • the upper clamping piece 2 is supported in this version with an edge 11 formed on its underside in turn on a stop 12, which on the one hand by a cylindrical surface, for example a base plate 17 and on the other hand by the outer circumference of the actuating shaft 19 or one or more thereon located Bearing 32 (eg needle bearing) is formed.
  • This stop 12 formed by a cylinder-fixed surface and the outer circumference of the actuating shaft 19 or the bearing or bearings 32, thus forms the pivot axis A.
  • a prestressed spring is preferably attached to the upper clamping piece 2 in this way (with a section-wise subdivision of the tensioning rail 1 each spring) is articulated, by means of which the upper clamping piece 2 is pulled with a support surface 18 in contact with a cylinder-fixed surface, for example the base plate 17.
  • the upper clamping piece 2 thus assumes the position shown in FIG. 6, which corresponds to the fully open position of the tensioning rail 1.
  • the spring means and their articulation points are not shown;
  • the upper clamping piece 2 has the profile shown in FIGS. 6, 7, 8 which, following the edge 11, has a contour 24 which corresponds to the outer circumference of the actuating shaft 19 or the bearing 32 thereon.
  • the upper clamping piece 2 that is to say the tensioning rail 1
  • the tensioning rail 1 is pivoted about the pivot axis A from the fully open position according to FIG. 6 by rotating the actuating shaft 19, for example via a driving arm, the contour according to FIG. 7 is created 24 to the outer circumference of the actuating shaft 19 or the bearing (s) 32.
  • the tensioning rail 1 is now pivoted further in such a way that the upper clamping piece 2 is pivoted about the actuating shaft 19, which now forms the pivot axis B.
  • the edge 11 of the upper clamping piece 2 thus lifts off the stop 12 of the pivot axis A.
  • the tensioning rail 1 is now, from the position shown in FIG. 7, pivoted about the pivot axis B of the actuating shaft 19 into the fully advanced position shown in FIG. 8, by a mechanical stop (not shown) or a travel limitation the actuating shaft 19 can be defined.
  • the lower clamping piece 3, as shown in FIGS. 6, 7, 8, has an L-shaped profile and, for example, is mounted opposite the upper clamping piece 2 in a manner similar to that described above.
  • a clamping shaft 25 here also has a flattened side and is supported on a surface of the upper clamping piece 2 in the manner of an inclined plane. The clamping shaft 25 opens or closes the gap 9 formed by the clamping surfaces 7, 8 between the upper and lower clamping pieces 2, 3 for gripping / releasing the pressure plate 10.
  • the actuating shaft 19 can cause the tensioning rail 1 to pivot forward via a driving arm, which acts on a rear part of the upper clamping piece 2, for example in the region of the support surface 18.
  • the actuating shaft 19 can in turn be articulated on the upper clamping piece 2 via at least one lever arm and at least one bracket (not shown).
  • the swivel axis A is designed in the manner of a cutting joint and the swivel axis B is designed as a swivel joint, which is to be regarded as a preferred embodiment of the general inventive concept.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Claims (19)

  1. Dispositif pour tendre des plaques d'impression (10) sur le cylindre porte-plaque (5) de machines d'impression, en particulier des machines d'impression offset à feuilles, dans lequel une plaque d'impression (10) fixée au début de l'impression peut être fixée, dans la zone de la fin de l'impression, par une barre de serrage (1) agencée dans le canal (4) du cylindre, la barre de serrage (1) pour la réception de la plaque d'impression (10) présentant une fente (9) formée par deux surfaces de serrage (7,8) d'une pièce de serrage supérieure et d'une pièce de serrage inférieure (2,3), qui peut être fermée par un dispositif (25) associé aux pièces de serrage (2,3) et la barre de serrage (1), pour tendre la plaque d'impression (10), pouvant être pivotée parallèlement à l'axe du cylindre porte-plaque (5),
    caractérisé en ce que deux axes de pivotement (A,B) sont associés à la barre de serrage (1), de sorte que la barre de serrage (1) peut pivoter, par l'intermédiaire d'un dispositif d'actionnement articulé, à partir d'une position tout à fait ouverte tout d'abord autour de l'axe de pivotement (A) avec un rayon de pivotement important défini par la distance par rapport à la fente (9) et, ensuite, autour de l'axe de pivotement (B) avec un rayon de pivotement plus petit défini par la distance par rapport à la fente (9).
  2. Dispositif selon la revendication 1,
    caractérisé en ce que les axes de pivotement (A,B) sont réalisés sous forme de deux butées (12,23;12,32) agencées de façon solidaire du cylindre, qui coopèrent avec des zones (11,24) formées sur la barre de serrage (1) de sorte que la barre de serrage (1) peut pivoter, à chaque fois, autour d'une de ces butées (12,23;12,32).
  3. Dispositif selon la revendication 2,
    caractérisé en ce que la butée (12) formant l'axe de pivotement (A) est réalisée sous forme d'un gradin usiné dans le fond du canal de cylindre (4), sur lequel la barre de serrage (1) est appuyée par l'intermédiaire d'un bord (11), prévu à sa partie inférieure, à la manière d'une articulation de coupe.
  4. Dispositif selon la revendication 2 ou 3,
    caractérisé en ce que la butée (23) formant l'axe de pivotement (B) est réalisée sous forme d'un tourillon (23.1) agencé de façon solidaire du cylindre et associé aux extrémités de la barre de serrage (1), qui coopère avec un contour (24) formé sur la barre de serrage (1) à la manière d'une articulation à charnière.
  5. Dispositif selon les revendications 1 à 4,
    caractérisé en ce que les zones conformées (11,24) sont prévues sur la pièce de serrage supérieure (2) de la barre de serrage (1).
  6. Dispositif selon une des revendications précédentes,
    caractérisé en ce que la barre de serrage (1) présente, sur la face inférieure de la pièce de serrage supérieure (2), une surface d'appui (18) sur laquelle la barre de serrage (1) repose, contre une plaque de base (17) prévue au fond du canal de cylindre (4), dans la position totalement ouverte.
  7. Dispositif selon une des revendications précédentes,
    caractérisé en ce que le dispositif d'actionnement est réalisé sous forme d'un ressort précontraint tirant la barre de serrage (1) dans une position totalement ouverte, et la barre de serrage (1) peut pivoter, par l'intermédiaire du dispositif d'actionnement, à l'encontre de la force de ce ressort.
  8. Dispositif selon la revendication 7,
    caractérisé en ce que le ressort est réalisé sous forme d'un ressort de pression (16) s'appuyant de façon solidaire du cylindre, qui est articulé, à l'autre extrémité, à la barre de serrage (1) par l'intermédiaire d'un tirant (14).
  9. Dispositif selon une des revendications précédentes,
    caractérisé en ce que le dispositif d'actionnement pour pivoter la barre de serrage (1) présente un arbre d'actionnement (19) s'étendant parallèlement à l'axe du cylindre porte-plaque (5).
  10. Dispositif au moins selon les revendications 1 et 9,
    caractérisé en ce que l'arbre d'actionnement (19) forme l'axe de pivotement (B) pour la barre de serrage (1), en ce que l'arbre d'actionnement (19) est agencé au-dessous de la barre de serrage (1) et celle-ci présente un contour (24) réalisé conformément à une partie de la périphérie externe de l'arbre d'actionnement (19), sur lequel la barre de serrage (1) peut s'appuyer sur l'arbre d'actionnement (19) à la manière d'une articulation à charnière.
  11. Dispositif selon la revendication 10,
    caractérisé en ce que l'arbre d'actionnement (19) présente des paliers (32), en particulier sous forme de paliers à aiguilles, sur la périphérie desquels s'appuie la barre de serrage (1) par le contour (24).
  12. Dispositif selon une des revendications 9 à 11,
    caractérisé en ce que l'arbre d'actionnement (19) est articulé à la barre de serrage (1) par l'intermédiaire d'au moins un bras de levier (20) ainsi que d'une attache (21).
  13. Dispositif selon une des revendications 9 à 11 en liaison avec la revendication 7 ou 8,
    caractérisé en ce que l'arbre d'actionnement (19) agit sur la barre de serrage (1) par l'intermédiaire d'au moins un bras d'entraînement.
  14. Dispositif selon une des revendications précédentes,
    caractérisé en ce que la pièce de serrage supérieure et la pièce de serrage inférieure (2,3) de la barre de serrage (1) sont subdivisées, sur la largeur du format, en une pluralité de tronçons identiques (13), et les tronçons (13) peuvent être pivotés ensemble par le dispositif d'actionnement.
  15. Dispositif selon la revendication 14 en liaison avec la revendication 7 ou 8,
    caractérisé en ce qu'un ressort précontraint est associé, à chaque fois, aux tronçons (13) de la barre de serrage (1).
  16. Dispositif selon la revendication 4 et les revendications 14 ou 15,
    caractérisé en ce que, à deux tronçons (13) de la barre de serrage (1), il est associé, à chaque fois, une plaque d'appui intermédiaire (22) avec les butées (23), réalisées sous forme de tourillons (23.1), pour l'axe de pivotement (B).
  17. Dispositif selon une des revendications précédentes,
    caractérisé en ce que les butées (12) pour l'axe de pivotement (A) sont agencées sur la plaque de base (17) prévue au fond du canal de cylindre (4).
  18. Dispositif selon une des revendications précédentes,
    caractérisé en ce que, sur la pièce de serrage inférieure (3) dans la zone de la fente (9), il est prévu une surface d'appui (9.1) sous forme d'un chanfrein pour la plaque d'impression (10) à introduire.
  19. Dispositif selon la revendication 14,
    caractérisé en ce que deux tronçons voisins (13) de la barre de serrage (1) peuvent être serrés l'un contre l'autre en direction axiale du cylindre porte-plaque (5) par des tiges filetées (31) présentant, à chaque fois, un filet à droite et un filet à gauche.
EP93105471A 1992-04-30 1993-04-02 Dispositif pour tendre un cliché d'impression sur le cylindre porte-plaque d'une machine à imprimer, particulièrement une machine à imprimer offset des feuilles Expired - Lifetime EP0570689B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4214168 1992-04-30
DE4214168A DE4214168C2 (de) 1992-04-30 1992-04-30 Vorrichtung zum Aufspannen von Druckplatten auf dem Plattenzylinder von Druckmaschinen, insbesondere Bogenoffsetdruckmaschinen

Publications (2)

Publication Number Publication Date
EP0570689A1 EP0570689A1 (fr) 1993-11-24
EP0570689B1 true EP0570689B1 (fr) 1996-06-19

Family

ID=6457777

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93105471A Expired - Lifetime EP0570689B1 (fr) 1992-04-30 1993-04-02 Dispositif pour tendre un cliché d'impression sur le cylindre porte-plaque d'une machine à imprimer, particulièrement une machine à imprimer offset des feuilles

Country Status (6)

Country Link
US (1) US5325778A (fr)
EP (1) EP0570689B1 (fr)
JP (1) JP2624613B2 (fr)
AT (1) ATE139483T1 (fr)
DE (2) DE4214168C2 (fr)
ES (1) ES2089623T3 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4321751C1 (de) * 1993-06-30 1994-11-24 Roland Man Druckmasch Vorrichtung zum paßgenauen Spannen von Druckplatten auf dem Plattenzylinder von Druckmaschinen
JPH0720757U (ja) * 1993-09-06 1995-04-11 大日本スクリーン製造株式会社 ドラム型走査装置用シート保持装置
DE9401760U1 (de) * 1994-02-03 1994-03-17 Heidelberger Druckmaschinen Ag, 69115 Heidelberg Plattenzylinder von Rotationsdruckmaschinen
US5413042A (en) * 1994-02-22 1995-05-09 Heidelberg Druckmaschinen Ag Lock-up assembly for securing a printing plate on a plate cylinder
DE4407791C2 (de) * 1994-03-09 1997-07-10 Kba Planeta Ag Biegsame Druckplatte
US5485784A (en) * 1994-06-28 1996-01-23 Walschlaeger, Sr.; Alan R. Printing plate cylinder with universal lockup apparatus
JPH08156229A (ja) * 1994-11-29 1996-06-18 Nagano Japan Radio Co 印刷機の版クランプ装置
US5584242A (en) * 1995-05-04 1996-12-17 Presstek, Inc. Clamp assembly for lithographic plates
US5553545A (en) * 1995-09-26 1996-09-10 Heath Custom Press, Inc. Plate clamping and tensioning apparatus for rotary printing press
DE19634947C1 (de) * 1996-08-29 1998-01-08 Roland Man Druckmasch Justiervorrichtung für Druckplatten
DE19701955C2 (de) * 1997-01-22 1998-12-03 Roland Man Druckmasch Befestigungsvorrichtung für Druckformen
US6116160A (en) * 1998-03-13 2000-09-12 Iris Graphics, Inc. Printer drum
DE19958238B4 (de) * 1999-01-18 2006-11-16 Heidelberger Druckmaschinen Ag Klemmvorrichtung zum Festklemmen eines Zylinderaufzuges auf einem Druckmaschinenzylinder
DE102004052823A1 (de) * 2004-11-02 2006-05-04 Koenig & Bauer Ag Vorrichtung zum Klemmen und Spannen des nachlaufenden Endes einer Druckplatte
DE102004052824A1 (de) * 2004-11-02 2006-05-04 Koenig & Bauer Ag Verfahren und Vorrichtung zum Zuführen einer Druckplatte
DE102008047191A1 (de) * 2007-10-01 2009-04-02 Heidelberger Druckmaschinen Ag Vorrichtung zum Befestigen einer Druckplatte auf einem Plattenzylinder einer Druckmaschine

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1521665A (en) * 1924-06-28 1925-01-06 Mccall Company Plate-clamping device
US3107609A (en) * 1961-05-04 1963-10-22 Emric G Haramija Mechanism for holding and tensioning a printing plate on a printing cylinder
DE1922749C3 (de) * 1969-05-03 1974-05-16 Roland Offsetmaschf Vorrichtung zur Befestigung einer Druckplatte auf dem Formzylinder einer Druckmaschine
DE6941597U (de) * 1969-10-24 1970-01-22 Karl Raes Vorrichtung zum aufspannen von drueckplatten auf plattenzylinder von druckmaschinen
DE3049143A1 (de) * 1980-12-24 1982-07-22 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Formzylinder fuer bogenrotations-tiefdruck-druckmaschinen
DE3626936C1 (de) * 1986-08-08 1988-02-11 Koenig & Bauer Ag Plattenklemmeinrichtung
EP0431575B1 (fr) * 1989-12-06 1995-10-04 Komori Corporation Dispositif de montage de plaques pour machines d'impression
DE3940796A1 (de) * 1989-12-09 1991-06-13 Koenig & Bauer Ag Verfahren und einrichtung zum automatischen wechseln einer druckplatte
DE3940795A1 (de) * 1989-12-09 1991-06-13 Koenig & Bauer Ag Verfahren und einrichtung zum automatischen zufuehren bzw. abfuehren einer druckplatte
JP2509511Y2 (ja) * 1990-05-25 1996-09-04 株式会社小森コーポレーション 印刷機の版万力装置
DE4128994A1 (de) * 1990-12-31 1992-07-02 Heidelberger Druckmasch Ag Klemm- und spanneinrichtung

Also Published As

Publication number Publication date
EP0570689A1 (fr) 1993-11-24
DE59302984D1 (de) 1996-07-25
US5325778A (en) 1994-07-05
JPH0623955A (ja) 1994-02-01
DE4214168C2 (de) 1994-10-06
ATE139483T1 (de) 1996-07-15
JP2624613B2 (ja) 1997-06-25
ES2089623T3 (es) 1996-10-01
DE4214168A1 (de) 1993-11-04

Similar Documents

Publication Publication Date Title
EP0570689B1 (fr) Dispositif pour tendre un cliché d'impression sur le cylindre porte-plaque d'une machine à imprimer, particulièrement une machine à imprimer offset des feuilles
EP0654349B1 (fr) Magasin pour l'échange automatique de plaques d'impression dans une machine à imprimer
EP0238804B1 (fr) Dispositif de fixation des clichés souples sur les cylindres de clichés dans les rotatives
EP0575787B1 (fr) Appareil de pliage pour la réalisation d'exemplaires pliés à partir d'une bande de papier imprimée
EP0567746B1 (fr) Dispositif pour fixer des plaques d'impression sur le cylindre porte-plaque d'une machine à imprimer, en particulier une machine pour imprimer des feuilles en offset
DE3112964A1 (de) "bogenuebertragungszylinder von bogenrotationsdruckmaschinen mit einer einrichtung zur passerkorrektur der aufdrucke"
EP0377860B1 (fr) Tambour de transfert de feuilles pour machines à imprimer pour l'impression sur le premier côté ou en retiration
EP0154843B1 (fr) Dispositif de tension des plaques d'impression
WO1995000429A1 (fr) Convoyeur de journaux
DE3538323A1 (de) Einrichtung fuer das seitliche anlegen von flachen, zu einem fortlaufenden band geordneten gegenstaenden
EP1110887B1 (fr) Dispositif pour guider des feuilles et procédé appliquant ledit dispositif de guidage
EP0631868B1 (fr) Dispositif pour tendre en repérage des plaques d'impression sur les cylindres de machines d'impression
EP0172412A2 (fr) Cylindre de transfert de feuilles dans les rotatives d'impression de feuilles
EP0374496B1 (fr) Positionneurs pour les bords avant de feuilles
EP0581102B1 (fr) Procédé pour transférer des feuilles et transporter des feuilles vers une unité de sortie
DE19829875B4 (de) Vorrichtung zum Aufbringen einer Platte auf einen Plattenzylinder einer Druckmaschine
EP0826500B1 (fr) Dispositif d'ajustage pour plaques d'impression
EP1282519B1 (fr) Cylindre avec un dispositif servant a presser un blanchet contre ce cylindre
DE19831975A1 (de) Förderkette für einen ein Greifersystem tragenden Kettenförderer einer Druckmaschine
EP0677372A2 (fr) Appareil d'étirage longitudinal, spécialement pour feuilles thermoplastiques
EP0534214B1 (fr) Procédé et dispositif pour la correction de divergences trapézoidales des repères
DE19848453A1 (de) Kettenförderer zum Transport von Bogen in einer Druckmaschine
EP0221524B1 (fr) Disposition pour le passage de feuilles
DE10035001B4 (de) Leitwalze
DE10040580A1 (de) Vorrichtung zum Führen von Signaturen, insbesondere im Bereich eines Auslauf-Zwickels einer Schneidzylinderanordnung in einem Falzapparat einer Rotationsdruckmaschine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19930421

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU NL PT SE

17Q First examination report despatched

Effective date: 19951006

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU NL PT SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19960619

Ref country code: DK

Effective date: 19960619

REF Corresponds to:

Ref document number: 139483

Country of ref document: AT

Date of ref document: 19960715

Kind code of ref document: T

ET Fr: translation filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: E. BLUM & CO. PATENTANWAELTE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: 68794

REF Corresponds to:

Ref document number: 59302984

Country of ref document: DE

Date of ref document: 19960725

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19960701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Effective date: 19960919

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2089623

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2089623

Country of ref document: ES

Kind code of ref document: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970306

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

Ref document number: 68794

Country of ref document: IE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970430

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19980318

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000201

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20000313

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20000320

Year of fee payment: 8

Ref country code: NL

Payment date: 20000320

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20000321

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20000322

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20000405

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20000418

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010402

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010402

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010403

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010403

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010501

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010501

BERE Be: lapsed

Owner name: MAN ROLAND DRUCKMASCHINEN A.G.

Effective date: 20010430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20011101

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20010402

EUG Se: european patent has lapsed

Ref document number: 93105471.2

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20011101

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20030203

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20030408

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041231

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050402