EP0660776B1 - Printing plates feeding process - Google Patents

Printing plates feeding process Download PDF

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Publication number
EP0660776B1
EP0660776B1 EP93920645A EP93920645A EP0660776B1 EP 0660776 B1 EP0660776 B1 EP 0660776B1 EP 93920645 A EP93920645 A EP 93920645A EP 93920645 A EP93920645 A EP 93920645A EP 0660776 B1 EP0660776 B1 EP 0660776B1
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EP
European Patent Office
Prior art keywords
plate
cylinder
plate cylinder
printing
printing plate
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
EP93920645A
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German (de)
French (fr)
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EP0660776A1 (en
Inventor
Wolfgang Günter Ruckmann
Erich Georg Wieland
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Koenig and Bauer AG
Original Assignee
Koenig and Bauer Albert AG
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Publication date
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Publication of EP0660776A1 publication Critical patent/EP0660776A1/en
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Anticipated expiration legal-status Critical
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    • 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
    • B41F27/1206—Feeding to or removing from the forme cylinder

Definitions

  • the invention relates to a method for feeding printing plates according to the preamble of patent claim 1.
  • a feed and discharge device for a printing press is known from EP 02 14 549 A1.
  • the printing plates are held when they are removed from the plate cylinder by means of guide rollers which can be adjusted to the circumference of the plate cylinder and associated actuating devices.
  • This is disadvantageous in that these adjustable plate pressure rollers, plus their actuating devices, both make access to the plate cylinder more difficult and require additional equipment.
  • it occupies a large part of the circumference of the plate cylinder with the aforementioned devices, so that only a limited number of rollers, for. B. inking rollers, may be present on the plate cylinder or the plate cylinder must be oversized.
  • the invention has for its object to provide a method for feeding printing plates to a plate cylinder of a rotary printing press.
  • a rotary printing machine has several printing units 1, z. B. four printing units, each containing, among other things, a plate cylinder 2, a blanket cylinder 3 and an impression cylinder 4. Furthermore, a number of inking rollers 6, 7, 8 and a dampening and inking roller 9 are arranged on the circumference of the plate cylinder 2, which can be adjusted to the plate cylinder 2 by known means, not shown. With the rollers 6 to 9 are still unspecified rubbing rollers in connection.
  • the cylinders 2 to 4 and rollers 6 to 9 are mounted directly or indirectly in side frames.
  • a discharge and feed device 12 for printing plates 13, 14 is provided on an access side 11 to the cylinders 2, 3, 4 of the printing unit 1.
  • This device 12 consists of an approximately printing plate-wide housing with two storage shafts 16, 17.
  • the housing viewed in section, has a slight curvature such that an upper part of the housing is initially oriented almost vertically and a lower part approximately in cross section expanded trapezoidal and runs in the direction of plate cylinder 2.
  • a front wall 18 of the housing extends over a pressure roller 19.
  • the pressure roller 19 is arranged approximately below the plate cylinder 2 and can be adjusted to the plate cylinder 2 by means of a working cylinder 21 fixed to the front wall and an angle lever 22 likewise mounted on the front wall 18.
  • the pressure roller 19 has a soft surface in relation to a pressure plate 13, 14, for. B. made of rubber or plastic.
  • a rear wall 23 of the housing extends to just before the last inking roller 8 above a line of contact 24 on which the inking roller 8 touches the plate cylinder 2 or the printing plate 13 on the plate cylinder 2, so that the rear wall 23 has a larger radius of curvature than the front wall 18.
  • the intermediate wall 26 is, however, shorter than the walls 18, 23 and ends in front of a transport device for pressure plates 13, 14, designated overall by 27.
  • the air ducts 28, 29 are delimited by air duct walls 32, 33 spaced apart from the front wall 18 and rear wall 23.
  • the air channels 28, 29 are not one shown compressed air supply system fed.
  • the air duct walls 32, 33, the front and rear walls 18, 23 and the intermediate wall 26 are each connected by end faces 34, which are symbolically represented by two tabs - shown in detail in FIG. 1. These end faces 34 extend from the upper part running in the vertical direction to the end of the trapezoidally widened part of the removal and supply device 12 on the periphery of the plate cylinder 2.
  • the transport device 27 consists of a drive roller 36 which is fixed on the end face and which has comb-like recesses in the axial direction on its periphery, into which fingers 37 engage, which are attached at approximately the bottom end of the intermediate wall 26.
  • This transport roller 36 is driven by a motor, e.g. B. driven a torque adjustable pneumatic motor.
  • a pressure roller 38 which can be adjusted at the lower end of the storage shaft 17 for printing plates 13 to be removed is arranged, which is connected to the piston rod of a working cylinder 41 likewise fixed to the rear wall via an angle lever 39 mounted on the rear wall.
  • a pressure roller 42 which can be set at the lower end of the storage shaft 16 for pressure plates 14 to be fed is arranged on this transport roller 36, which pressure roller 42 is attached to the piston rod of a likewise fixed to the front wall by means of an angle lever mounted on the front wall Working cylinder 44 is connected.
  • the pressure rollers 38, 42 have a soft, elastic surface, e.g. B. made of rubber.
  • a guide bar 46 which is trapezoidal in cross section and extends in the axial direction of the plate cylinder 2.
  • the underside and the top of the guide bar 46 are each concave and the radius of the plate cylinder 2 or the transport roller 36 aligned.
  • a first end face 47 of the guide bar 46 forms below the transport device 27 the boundary of the storage shaft 16 for the plate feed relative to the front wall 18.
  • a second end face 48 of the guide bar 46 forms below the transport device 27 the boundary of the storage shaft 17 for plate guiding with respect to the rear wall 23, or the lower end of the rear wall 23 pointing in the direction of the plate cylinder 2 is arranged at such a distance, forming an introduction 49, from the line of contact 24 of the last inking roller 8 seen in the direction of rotation with the plate cylinder 2, so that the printing plate 13 to be removed finds its way into this introduction 49 and can be further promoted by the storage shaft 17.
  • This insertion 49 tapers from the plate cylinder 2 in the direction of the transport device 27 and thus runs in a wedge shape in cross section.
  • the plate leading edge alignment unit 52 consists of a rotatable shaft 53 mounted in the end faces 34 of the discharge and supply device 12 with at least two dowel pins or register stops 51 protruding radially from the periphery of this shaft 53, which are fitted with fitting devices 54 at the beginning of the pressure plates 13 , 14 correspond.
  • the shaft 53 is connected via a rocker arm 50 via a joint to the piston rod of an articulated working cylinder 55 fixed to the front wall.
  • the removal and supply device 12 can be pivoted vertically upwards for repair and maintenance purposes of the printing unit 1 by two bearings 56, 57 fixed to the frame by means of a rocker 59 articulated on the front wall 18 and a double-armed lever 60 articulated on the front wall 18.
  • the double-armed lever 60 is connected with its first lever arm 58 via a frame-fixed bearing and with its second lever arm 61 via a joint to the piston rod of a working cylinder 62 fixed to the frame.
  • the plate cylinder 2 has a plate clamping device 64 and a plate clamping and clamping device 66 in a pit 63.
  • a plate clamping device 64 and a plate clamping and clamping device 66 in a pit 63.
  • Such a device is known from DE 36 04 071 C2.
  • On the plate clamps 64, 66 of the plate cylinder 2 2 openable and closable clamping flaps or gripper devices 67, 68 are arranged in the vicinity of the periphery of the plate cylinder, each of which cooperates with a gripper support surface 70.
  • the gripper device 67 is connected to the front edge, ie the start of the print, and the gripper device 68 is always connected to the rear edge, ie the print end of the respective printing plate 13, 14.
  • actuating means for actuating the gripper device 67, 68 or the plate clamping device 64, 66 are supplied with working medium via a rotary entry (not shown) on a pin of the plate cylinder 2.
  • the actuating means can be designed as hydraulic, pneumatic or electrical units.
  • the gripper device 67, 68 is usually designed as a gripper support bar.
  • the printing plate should be changed.
  • the plate cylinder 2 travels past the application rollers 9, 6, 7 with the start 69 of the printing plate 13, with the application rollers 6 to 9 turned on, up to a contact line 24 between the last application roller 8 seen in the direction of rotation of the plate cylinder 2 (counterclockwise) and the plate cylinder 2 with the printing plate 13 located therebetween
  • the gripper device 67 opens, and the pressure plate beginning 69 springs due to its inherent tension to the lower end 71 of the rear wall 23, so that the plate beginning 69 takes at least a tangential position to the plate cylinder 2 from the line of contact 24 (Fig. 1).
  • the printing plate start 69 reaches the tapering gap 49.
  • a new printing plate 14 may already be in the waiting position.
  • the pressure plate beginning 69 passes through the curved lower part of the storage shaft 17 as a result of the frictional engagement with the application rollers 6 to 9, the pressure roller 38 of the transport device 27 located in the lower part of the removal and supply device 12 being switched off and the air channels 28, 29 are permanently pressurized with compressed air, so that the sensitive side of the pressure plate 13, 14 is always spaced from the front wall 18 and the rear wall 23 of the feed and discharge device 12 (FIG. 2).
  • the new printing plate 14 with its printing plate start 72 is fed to the plate cylinder 2 and fastened thereon.
  • the end of the printing plate 13 reaches the line of contact 24 between the last application roller 8 and the plate cylinder 2 with the intermediate end of the pressure plate 13.
  • the gripper device 67 opens and the pressure roller 38 presses the pressure plate 13 with its flexible coating against the driven transport roller 36, so that the pressure plate 13 is conveyed further in the vertical direction to the outlet of the discharge and feed device 12.
  • the application rollers 6 to 9 can be turned off (Fig. 3).
  • the printing plate 14 is further applied by rotating the plate cylinder 2.
  • the pressure plate 13 While the plate cylinder 2 continues to rotate in the direction of production rotation, the pressure plate 13, as a result of the conveying movement of the transport device 27, reaches the fingers 37 with its end of the pressure plate, on which the pressure plate 13 is now provided for removal (FIG. 4). At the same time, the new printing plate 14 rests with its plate end on the plate cylinder 2 and is clamped.
  • the start of the plate removal from the plate cylinder 2 can also take place in such a way that after reaching a line of contact 73 between the circumference of the dampening roller 9 and the circumference of the plate cylinder 2 through the plate start 69, all on the circumference of the plate cylinder 2 adjacent application rollers 6 to 9 are parked, ie they are removed a few millimeters by known means.
  • the gripper bar 67 opens, so that the pressure plate 13 relaxes and loosely rests with its start 69 against the application rollers 6 to 9, so that the pressure plate 13 is conveyed to the storage shaft 17 in a positive and non-positive manner by the gripper bar 68.
  • the plate feed of a new printing plate 14 to the plate cylinder 2 is shown in more detail below.
  • the pressure plate 14 to be fed is inserted with its pressure plate start 72 into the storage shaft 16 of the discharge and feed device 12 when the pressure roller 42 of the transport device 27 is not in contact and engages with its fitting slots 54 located at the start of the plate into the shaft 53 located on the shaft 53 and in the lower part of the shaft Memory shaft 16 protruding dowel pins 51, whereby the printing plate 14 is aligned.
  • the pressure plate 14 is thus on the plate alignment unit 52 in the waiting position (FIG. 1).
  • the shaft 53 is rotated by 90 °, so that the dowel pins 51 disengage from the fitting slots 54 at the plate start 72 of the pressure plate 14 with a soft elastic covering pressure roller 42 pressed against the pressure plate 14 and thus against the driven and counterclockwise transport roller 36 of the transport device 27.
  • the pressure roller 42 and the transport roller 36 run with a Peripheral speed, which is 1.1 to 1.2 times the peripheral speed of the plate cylinder 2, so that the aligned pressure plate 14 is fed to the plate cylinder 2 accelerated and moves with the fitting slots 54 against stops or dowel pins 51 which are on the plate cylinder 2, but in particular is mounted on the plate clamping device 64 located in the cylinder pit 63.
  • the gripper device 67 then closes and holds the pressure plate start 72 in a positive and non-positive manner.
  • the pressure roller 19, which is provided with a soft, elastic covering, is set against the plate cylinder 2 or against the pressure plate 14 located therebetween (FIG. 2).
  • the plate cylinder 2 now rotates further in the direction of production rotation and the pressure roller 42 pressing against the pressure plate 14 is pivoted away and thus brought into the rest position (FIG. 3).
  • the pressure plate 13 to be removed leaves the plate cylinder 2 and the gripper bar 68 thereby opened can grip the end of the pressure plate 14 in a non-positive and positive manner.
  • the pressure roller 19 is turned off.
  • the plate changing process is now complete (Fig. 4).
  • the plate feed to the plate cylinder 2 can also take place in such a way that a pressure plate 14 provided with fitting devices 54 at its plate start 72 from the storage shaft 16 in the direction of the plate cylinder 2 up to the plate front edge alignment unit 52 guided, then aligned there and held on hold.
  • the plate cylinder 2 then interrupts its rotational movement and the transport device 27 consisting of the pressure roller 42 and the driven transport roller 36 conveys the pressure plate 14 in the tangential direction to a gripper support surface 70 on the plate cylinder 2 (FIG. 10), on which register stops 51 are arranged.
  • the control computer 74 receives its information on the one hand from a position transmitter 76 for monitoring the contact of the printing plate 13, 14 with its fitting devices 54 on the stop 51 on the plate cylinder 2. On the other hand, the control computer receives 74 Information about a position sensor 77 attached to the plate cylinder 2. Furthermore, the control computer 74 is connected to a number of electro-magnetic valves 78 which, when a command is given, change the printing plate depending on the positions of the plate cylinder 2 and in connection with suitable software in the correct order and the working cylinder with working medium, e.g. B. supply compressed air from a pressure source 79. All electric drives, e.g. B.
  • control computer 74 works according to a flow chart (FIGS. 8 and 9), so that the Steps 101 to 107 or 201 to 216 are carried out automatically one after the other.
  • FIG. 8 shows the flowchart for releasing and removing the printing plate 13 from the plate cylinder 2 or inserting it into the storage shaft 17 of the removal and supply device 12.
  • a query 102 of the safety conditions is carried out, e.g. B. is the discharge and feed device 12 in the working position.
  • the device 12 could also be in a position remote from the cylinder by means of the manually operated working cylinder 62.
  • Appropriate sensors are then activated. Among other things there is also a query as to whether the storage slot 17 is free. If these conditions are not met, an interference signal 103 is generated. If all safety conditions are met, a start-up warning signal 104 is generated.
  • the plate cylinder 2 is rotated at creep speed into the plate cylinder position A (PZ position A) 105 according to FIG. 1.
  • the beginning 69 of the printing plate 13 has straight contact with the application roller 8 and the plate cylinder 2 at the contact line 24.
  • the plate tension is switched off in a step 106, the gripper bar 67 of the plate clamping device 69 is opened and the pressure roller 38 is issued by the working cylinder 41.
  • the end of the pressure plate 13 is reached in one step after further rotation of the plate cylinder 2 107 (FIG. 3) the line of contact 24 between the last application roller 8 and the plate cylinder 2 (PZ position B).
  • the gripper bar 68 of the plate clamping and tensioning device 66 opens and the pressure roller 38 in the storage shaft 17 is started.
  • the pressure plate 13 is ready for removal on the fingers 37.
  • FIG. 9 shows a flow chart according to which the control computer 74 works in conjunction with the other position indicators (for example rotary angle transmitter 77) so that the printing plate 14 is fed to the plate cylinder 2.
  • a start trigger 201 By actuating a start trigger 201, an interrogation 202 of the safety conditions is carried out (for example, the discharge and supply device 12 is in the working position). Appropriate sensors are then activated. If all safety conditions are not met, an interference signal 203 is generated. A start warning signal 204 is given when all safety conditions are met. A renewed actuation of the start trigger 201 activates the drive 81 of the plate cylinder 2.
  • a subsequent query 205 relates to the presence of a new pressure plate 14 in the storage shaft 16, the pressure plate start 72 of the pressure plate 14 with its fitting devices 54 receiving the stops or dowel pins 51 in a form-fitting manner. If the pressure plate 14 is missing, an interference signal 206 is generated. While the plate cylinder 2 with its open gripper device 67 is in a cylinder position C (FIG. 2) approaches the lower end of the storage shaft 16, the alignment unit 52 is switched off in a step 207 by actuating the working cylinder 55 and at the same time the pressure roller 42 is pressed in the direction of the rotating transport roller 38 by actuating the working cylinder 44. In a subsequent step 208, the plate cylinder 2 is rotated into a position C (FIG.
  • step 209 it is checked again whether the gripper bar 67 is still open and in a step 210 it is checked whether the pressure plate start 72 of the aligned pressure plate 14 is in contact with the stops 51 on the plate cylinder 2.
  • the position sensor 76 and the rotary angle sensor 77 are switched on. If the pressure plate start 72 is not applied or is not properly applied, an interference signal is generated.
  • a step 211 the gripper device 67 is closed and the pressure plate start 72 of the pressure plate 14 is held in a non-positive and positive manner and the pressure roller 19 is pivoted to the periphery of the plate cylinder 2 by means of the working cylinder 21.
  • a plate cylinder position D (FIG. 4) is reached in a next step 213, in which the end of the printing plate 14 lies on the plate cylinder 2 and subsequently in a step 214 through the Gripper bar 68 is held non-positively.
  • the pressure plate 14 is tensioned.
  • the pressure roller 19 is turned off in a step 215 by actuation by the working cylinder 21.
  • the plate changing process is finished.
  • an end 216 signal is generated.
  • the working cylinders 21, 41, 44, 55, 62 are designed as double-acting pneumatic working cylinders, the supply and discharge connections for the compressed air are not shown.
  • the plate clamping device 64 arranged in the cylinder pit 63 for fastening the pressure plate start 69, 72 can also be designed as a combined plate clamping and tensioning device.
  • the inking roller 8 can also be designed as a separate roller, i. H. for example, perform the function of a deflecting roller and can be actuated separately, d. H. from the inking rollers 6, 7, 9 can be adjusted separately to the plate cylinder 2.
  • FIG. 10 shows a section X - X according to FIG. 6 with an enlarged detailed illustration according to FIG. 2.
  • a circle 83 with the radius r 1 runs for the circumference of the plate cylinder 2 with its outer surface.
  • a Radisu r 2 extends from the axis of rotation 82 of the plate cylinder 2, a further circle 84, which almost reaches the gripper support surface 70.
  • the radius r 2 is smaller than the radius r 1 .
  • the storage slot 16 points at his part near the plate cylinder has a shaft end 86 which extends tangentially to a circle 83 or 84, the radius of which lies between the radius r 1 and r 2 .
  • the shaft end 86 extends tangentially to the plate cylinder 2 in III. Quadrants of a right-angled coordinate system related to the plate cylinder cross-section.
  • the storage shaft 17 has on its part near the plate cylinder a shaft end 87 which extends tangentially to a circle 83 or 84, the radius of which lies between the radius r 1 and r 2 .
  • the shaft end 87 extends tangentially to the plate cylinder 2 in the second quadrant of a right-angled coordinate system (FIG. 1).
  • the shaft ends 86, 87 lie opposite each other in the area of two adjacent quadrants II and III. However, they can also face each other in the adjacent quadrants I or IV or I and II.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)

Abstract

In a process and device for carrying away and supplying printing plates (13, 14), the problem consists in gently supplying to and carrying away from a plate cylinder (2) a printing plate with its colour-bearing side. During removal of the plate, at least one inking roller (6, 7, 8, 9) presses against the printing plate located on the plate cylinder, the printing plate beginning (69) is then released and elastically inserted into a storage shaft (17) by means of its own elasticity and is carried away by transport means.

Description

Die Erfindung betrifft ein Verfahren zum Zuführen von Druckplatten gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to a method for feeding printing plates according to the preamble of patent claim 1.

Durch die EP 02 14 549 A1 ist eine Zu- und Abführeinrichtung für eine Druckmaschine bekannt. Bei dieser Einrichtung werden die Druckplatten beim Abführen vom Plattenzylinder mittels an den Umfang des Plattenzylinders anstellbarer Führungsrollen sowie dazugehöriger Betätigungseinrichtungen gehalten werden. Dies ist insofern von Nachteil, als daß diese anstellbaren Plattenandrückrollen zuzüglich ihrer Betätigungseinrichtungen sowohl den Zugang zum Plattenzylinder erschweren als auch einen zusätzlichen gerätetechnischen Aufwand erfordern. Darüberhinaus wird dadurch ein Großteil des Umfanges des Plattenzylinders mit den vorgenannten Einrichtungen belegt, so daß nur eine begrenzte Anzahl von Walzen, z. B. Farbauftragswalzen, am Plattenzylinder vorhanden sein können oder der Plattenzylinder muß überdimensional groß ausgeführt sein. Weiterhin ist es nachteilig, daß beim Plattenzuführvorgang eine angetriebene Führungsrolle zum Einsatz kommt, die mit der sensitiven Seite der Druckplatte in Berührung steht..Dies kann zu Beschädigungen dieser sensitiven Seite der Druckplatte führen, insbesondere dann, wenn die Zuführgeschwindigkeit der Druckplatte veränderbar ist, so wie dies nach der EP 02 14 549 A1 durch die Beschleunigung und nachfolgende Verzögerung der Plattenzuführung gehandhabt wird, also eine schonende Zu- bzw. Abführung erfolgen kann.A feed and discharge device for a printing press is known from EP 02 14 549 A1. With this device, the printing plates are held when they are removed from the plate cylinder by means of guide rollers which can be adjusted to the circumference of the plate cylinder and associated actuating devices. This is disadvantageous in that these adjustable plate pressure rollers, plus their actuating devices, both make access to the plate cylinder more difficult and require additional equipment. In addition, it occupies a large part of the circumference of the plate cylinder with the aforementioned devices, so that only a limited number of rollers, for. B. inking rollers, may be present on the plate cylinder or the plate cylinder must be oversized. Furthermore, it is disadvantageous that a driven guide roller is used in the plate feeding process, which is in contact with the sensitive side of the printing plate. This can lead to damage to this sensitive side of the printing plate, in particular if the feeding speed of the printing plate is variable, so how this is handled according to EP 02 14 549 A1 by the acceleration and subsequent deceleration of the plate feed, that is to say a gentle feed or discharge can take place.

Darüberhinaus ist es bei dem Plattenherauszieh- bzw. Plattenabführvorgang nachteilig, daß hier ebenfalls eine angetriebene Führungsrolle eingesetzt wird, die mit der sensitiven Seite der Druckplatte in Berührung steht, so daß eine Beschädigung derselben nicht auszuschließen ist, was einer Wiederverwendung der Druckplatte entgegensteht.In addition, it is disadvantageous in the plate pull-out or plate removal process that a driven guide roller is also used here, which is in contact with the sensitive side of the printing plate, so that damage to the printing plate cannot be ruled out, which prevents reuse of the printing plate.

Durch die EP 02 14 549 A1 ist es weiter bekannt, eine Druckplatte mittels einer Transporteinrichtung in Form von Transportrollen auf eine Geschwindigkeit zu beschleunigen, die größer ist als die Umfangsgeschwindigkeit des in Produktionsrichtung laufenden Plattenzylinders. Die Druckplatte schlägt gegen gewölbte Führungsplatten, von denen sie bis zu 1 mm zurückprallen dürfen, um das Eingreifen von Registerstiften in die Registerlochung der Druckplatte zu ermöglichen. Der Druckplattenanfang wird durch eine Greifereinrichtung formschlüssig festgehalten. In dieser Lage der Druckplatte auf dem Plattenzylinder wird dieser in Produktionsrichtung weiter verdreht bis ein Ende der Druckplatte auf dem Mantel des Plattenzylinders aufliegt. Das Ende der Druckplatte wird schließlich in eine Zylindergrube hineingedrückt und Haken einer steuerbaren Einrichtung greifen in eine Lochung im Druckplattenende ein, halten es fest und spannen die Druckplatte.From EP 02 14 549 A1 it is also known to accelerate a printing plate by means of a transport device in the form of transport rollers to a speed which is greater than the peripheral speed of the plate cylinder running in the production direction. The pressure plate strikes against curved guide plates, from which they can rebound up to 1 mm to allow register pins to engage in the register perforation of the pressure plate. The start of the printing plate is held in a form-fitting manner by a gripper device. In this position of the printing plate on the plate cylinder, the latter is rotated further in the production direction until one end of the printing plate lies on the jacket of the plate cylinder. The end of the pressure plate is finally pressed into a cylinder pit and hooks of a controllable device engage in a perforation in the end of the pressure plate, hold it in place and tension the pressure plate.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zum Zuführen von Druckplatten auf einen Plattenzylinder einer Rotationsdruckmaschine zu schaffen.The invention has for its object to provide a method for feeding printing plates to a plate cylinder of a rotary printing press.

Erfindungsgemäß wird diese Aufgabe entsprechend dem Kennzeichen des Patentanspruches 1 gelöst.According to the invention, this object is achieved in accordance with the characterizing part of patent claim 1.

Durch die Erfindung werden insbesondere folgende Vorteile erzielt.The following advantages are achieved in particular by the invention.

Angetriebene Förderorgane für die Druckplatten, wie Antriebsrollen, kommen nicht mit der farbführenden sensitiven Seite der Druckplatte in Verbindung, so daß die Druckplatte beim Wechseln nicht beschädigt wird und somit einer Wiederverwendung derselben nichts im Wege die Druckplatte beim Wechseln nicht beschädigt wird und somit einer Wiederverwendung derselben nichts im Wege steht. Durch den gleichzeitigen Einsatz der Farbauftragwalzen als Hilfsmittel zur Plattenführung haben die Farbauftragswalzen eine mehrfache Funktion. Darüberhinaus können eine Vielzahl Von Farbauftragswalzen an den Plattenzylinder angestellt werden. Infolge der Anordnung von Luftkanälen und durch das Beblasen der sensitiven Seite der Druckplatte im Speicherschacht wird gesichert, daß keine Berührung dieser Seite mit dem Speicherschacht erfolgt.Driven conveying elements for the printing plates, such as drive rollers, do not come into contact with the ink-carrying sensitive side of the printing plate, so that the printing plate is not damaged when changing and thus nothing stands in the way of reusing it the pressure plate is not damaged when changing and thus nothing stands in the way of reusing it. Due to the simultaneous use of the inking rollers as tools for plate guidance, the inking rollers have a multiple function. In addition, a variety of inking rollers can be placed on the plate cylinder. As a result of the arrangement of air ducts and by blowing the sensitive side of the pressure plate in the storage shaft, it is ensured that this side does not come into contact with the storage shaft.

In den dazugehörigen Zeichnungen zeigen

Fig. 1 bis 4
jeweils eine schematische Seitenansicht einer erfindungsgemäßen Zu- und Abführvorrichtung für Druckplatten in verschiedenen Stellungen des Plattenzylinders;
Fig. 5
eine ausschnittsweise vergrößerte Darstellung nach Fig. 3;
Fig. 6
eine Darstellung des Plattenanfanges einer Druckplatte in der Platten-Ausrichteeinheit;
Fig. 7
eine Steuereinrichtung und einen Steuerrechner;
Fig. 8
einen Ablaufplan für das Abführen einer Druckplatte vom Plattenzylinder;
Fig. 9
einen Ablaufplan für das Zuführen einer Druckplatte zum Plattenzylinder;
Fig. 10
einen Schnitt X - X nach Fig. 6 mit einer vergrößerten Detaildarstellung nach Fig. 2.
Show in the accompanying drawings
1 to 4
each a schematic side view of a feed and discharge device according to the invention for printing plates in different positions of the plate cylinder;
Fig. 5
a fragmentary enlarged view of FIG. 3;
Fig. 6
a representation of the plate start of a printing plate in the plate alignment unit;
Fig. 7
a control device and a control computer;
Fig. 8
a flowchart for removing a printing plate from the plate cylinder;
Fig. 9
a flowchart for feeding a printing plate to the plate cylinder;
Fig. 10
6 shows a section X-X according to FIG. 6 with an enlarged detailed illustration according to FIG. 2.

In den Fig. 1 bis 4 ist in schematischen Darstellungen der Aufbau einer erfindungsgemäßen Einrichtung gezeigt in den verschiedenen Plattenzylinderstellungen. Eine Rotationsdruckmaschine weist mehrere Druckwerke 1, z. B. vier Druckwerke, auf, die jeweils u. a. einen Plattenzylinder 2, einen Gummituchzylinder 3 und einen Gegendruckzylinder 4 enthalten. Weiterhin sind am Umfang des Plattenzylinders 2 eine Anzahl von Farbauftragswalzen 6, 7, 8 sowie eine Feucht- und Farbauftragswalze 9 angeordnet, die durch nicht dargestellte bekannte Mittel an den Plattenzylinder 2 anstellbar sind. Mit den Walzen 6 bis 9 stehen weiterhin nicht näher bezeichnete Verreibewalzen in Verbindung. Die Zylinder 2 bis 4 und Walzen 6 bis 9 sind direkt bzw. indirekt in Seitengestellen gelagert. An einer Zugansseite 11 zu den Zylindern 2, 3, 4 des Druckwerkes 1 ist eine Abführ- und Zuführeinrichtung 12 für Druckplatten 13, 14 vorgesehen. Diese Einrichtung 12 besteht aus einem etwa druckplattenbreiten Gehäuse mit zwei Speicherschächten 16, 17. Das Gehäuse weist, im Schnitt betrachtet, eine leichte Krümmung derart auf, daß ein oberes Teil des Gehäuses zunächst nahezu vertikal ausgerichtet ist und ein unteres Teil im Querschnitt etwa trapezförmig erweitert und in Richtung Plattenzylinder 2 verläuft. Eine Vorderwand 18 des Gehäuses erstreckt sich dabei bis über eine Andrückwalze 19.1 to 4, the structure of a device according to the invention is shown in the various plate cylinder positions in schematic representations. A rotary printing machine has several printing units 1, z. B. four printing units, each containing, among other things, a plate cylinder 2, a blanket cylinder 3 and an impression cylinder 4. Furthermore, a number of inking rollers 6, 7, 8 and a dampening and inking roller 9 are arranged on the circumference of the plate cylinder 2, which can be adjusted to the plate cylinder 2 by known means, not shown. With the rollers 6 to 9 are still unspecified rubbing rollers in connection. The cylinders 2 to 4 and rollers 6 to 9 are mounted directly or indirectly in side frames. On an access side 11 to the cylinders 2, 3, 4 of the printing unit 1, a discharge and feed device 12 for printing plates 13, 14 is provided. This device 12 consists of an approximately printing plate-wide housing with two storage shafts 16, 17. The housing, viewed in section, has a slight curvature such that an upper part of the housing is initially oriented almost vertically and a lower part approximately in cross section expanded trapezoidal and runs in the direction of plate cylinder 2. A front wall 18 of the housing extends over a pressure roller 19.

Die Andrückwalze 19 ist etwa unterhalb des Plattenzylinders 2 angeordnet und mittels eines vorderwandfesten Arbeitszylinder 21 und eines ebenfalls an der Vorderwand 18 gelagerten Winkelhebels 22 an den Plattenzylinder 2 anstellbar. Die Andrückwalze 19 weist im Verhältnis zu einer Druckplatte 13, 14 eine weiche Oberfläche auf, z. B. aus Gummi oder Kunststoff. Eine Rückwand 23 des Gehäuses erstreckt sich bis kurz vor die letzte Farbauftragswalze 8 oberhalb einer Berührungslinie 24, an welcher die Farbauftragswalze 8 den Plattenzylinder 2 bzw. die Druckplatte 13 auf dem Plattenzylinder 2 berührt, so daß die Rückwand 23 eine größeren Krümmungsradius aufweist als die Vorderwand 18. Zwischen der Vorderwand 18 und der Rückwand 23 ist eine Zwischenwand 26 angeordnet, welche die beiden Speicherschächte 16, 17 voneinander trennt. Die Zwischenwand 26 ist jedoch kürzer als die Wände 18, 23 und endet vor einer insgesamt mit 27 bezeichneten Transporteinrichtung für Druckplatten 13, 14. Parallel zur jeweiligen Wand 18, 23 und außerhalb der Schächte 16, 17 verläuft jeweils ein Luftkanal 28, 29, welcher über eine Anzahl von Öffnung 31 mit dem jeweiligen Speicherschacht 16, 17 verbunden ist. Die Luftkanäle 28, 29 werden durch zur Vorderwand 18 bzw. Rückwand 23 beabstandete Luftkanalwände 32, 33 begrenzt. Die Luftkanäle 28, 29 werden von einer nicht dargestellten Druckluftversorgungsanlage gespeist. Die Luftkanalwände 32, 33, die Vorder- und Rückwand 18, 23 sowie die Zwischenwand 26 sind jeweils durch Stirnseiten 34 verbunden, die symbolisch durch zwei Laschen dargestellt sind, - in Fig. 1 ausschnittsweise dargestellt. Diese Stirnseiten 34 erstrecken sich von dem in vertikaler Richtung verlaufenden oberen Teil bis zum Ende des trapezförmig erweiterten Teils der Ab- und Zuführeinrichtung 12 an der Peripherie des Plattenzylinders 2.The pressure roller 19 is arranged approximately below the plate cylinder 2 and can be adjusted to the plate cylinder 2 by means of a working cylinder 21 fixed to the front wall and an angle lever 22 likewise mounted on the front wall 18. The pressure roller 19 has a soft surface in relation to a pressure plate 13, 14, for. B. made of rubber or plastic. A rear wall 23 of the housing extends to just before the last inking roller 8 above a line of contact 24 on which the inking roller 8 touches the plate cylinder 2 or the printing plate 13 on the plate cylinder 2, so that the rear wall 23 has a larger radius of curvature than the front wall 18. Between the front wall 18 and the rear wall 23 there is an intermediate wall 26 which separates the two storage shafts 16, 17 from one another. The intermediate wall 26 is, however, shorter than the walls 18, 23 and ends in front of a transport device for pressure plates 13, 14, designated overall by 27. Parallel to the respective wall 18, 23 and outside the shafts 16, 17, an air duct 28, 29 runs in each case is connected to the respective storage shaft 16, 17 via a number of openings 31. The air ducts 28, 29 are delimited by air duct walls 32, 33 spaced apart from the front wall 18 and rear wall 23. The air channels 28, 29 are not one shown compressed air supply system fed. The air duct walls 32, 33, the front and rear walls 18, 23 and the intermediate wall 26 are each connected by end faces 34, which are symbolically represented by two tabs - shown in detail in FIG. 1. These end faces 34 extend from the upper part running in the vertical direction to the end of the trapezoidally widened part of the removal and supply device 12 on the periphery of the plate cylinder 2.

Die Transporteinrichtung 27 besteht aus einer stirnseitenfesten angetriebenen Transportwalze 36, welche in axialer Richtung an ihrer Peripherie kammartige Aussparungen aufweist, in welche Finger 37 eingreifen, die am unteren Ende der Zwischenwand 26 etwa rechtwinklig angebracht sind. Diese Transportwalze 36 ist durch einen Motor, z. B. einen drehmomenteinstellbaren Pneumatikmotor angetrieben. An diese Transportwalze 36 ist einerseits eine am unteren Ende des Speicherschachtes 17 für abzuführende Druckplatten 13 anstellbare Andrückrolle 38 angeordnet, welche über einen rückwandfest gelagerten Winkelhebel 39 mit der Kolbenstange eines ebenfalls rückwandfest gelagerten Arbeitszylinders 41 verbunden ist. Andererseits ist an diese Transportwalze 36 eine am unteren Ende des Speicherschachtes 16 für zuzuführende Druckplatten 14 anstellbare Andrückrolle 42 angeordnet, welche über einen vorderwandfest gelagerten Winkelhebel mit der Kolbenstange eines ebenfalls vorderwandfest gelagerten Arbeitszylinders 44 verbunden ist. Die Andrückrollen 38, 42 weisen eine weiche, elastische Oberfläche auf, z. B. aus Gummi.The transport device 27 consists of a drive roller 36 which is fixed on the end face and which has comb-like recesses in the axial direction on its periphery, into which fingers 37 engage, which are attached at approximately the bottom end of the intermediate wall 26. This transport roller 36 is driven by a motor, e.g. B. driven a torque adjustable pneumatic motor. On this transport roller 36, on the one hand, a pressure roller 38 which can be adjusted at the lower end of the storage shaft 17 for printing plates 13 to be removed is arranged, which is connected to the piston rod of a working cylinder 41 likewise fixed to the rear wall via an angle lever 39 mounted on the rear wall. On the other hand, a pressure roller 42 which can be set at the lower end of the storage shaft 16 for pressure plates 14 to be fed is arranged on this transport roller 36, which pressure roller 42 is attached to the piston rod of a likewise fixed to the front wall by means of an angle lever mounted on the front wall Working cylinder 44 is connected. The pressure rollers 38, 42 have a soft, elastic surface, e.g. B. made of rubber.

Unterhalb der Transporteinrichtung 27 in dem trapezartig erweiterten Teil befindet sich eine im Querschnitt trapezförmig ausgebildete und sich in axialer Richtung des Plattenzylinders 2 erstreckende Führungsleiste 46. Die Unterseite und die Oberseite der Führungsleiste 46 ist jeweils konkav ausgebildet und dem Radius des Plattenzylinders 2 bzw. der Transportwalze 36 angeglichen. Eine erste Stirnseite 47 der Führungsleiste 46 bildet unterhalb der Transporteinrichtung 27 die Begrenzung des Speicherschachtes 16 zur Plattenzuführung gegenüber der Vorderwand 18. Eine zweite Stirnseite 48 der Führungsleiste 46 bildet unterhalb der Transporteinrichtung 27 die Begrenzung des Speicherschachtes 17 zur Plattenbführung gegenüber der Rückwand 23, bzw. ist das untere in Richtung Plattenzylinder 2 weisende Ende der Rückwand 23 in einem solchen, eine Einführung 49 bildenden Abstand von der Berührungslinie 24 der in Drehrichtung gesehen letzten Farbauftragswalze 8 mit dem Plattenzylinder 2 angeordnet, daß die abzuführende Druckplatte 13 in diese Einführung 49 Eingang findet und weiter durch den Speicherschacht 17 gefördert werden kann. Diese Einführung 49 verjüngt sich von dem Plattenzylinder 2 aus gesehen in Richtung Transporteinrichtung 27 und verläuft somit im Querschnitt gesehen keilförmig.Below the transport device 27 in the trapezoidally widened part there is a guide bar 46 which is trapezoidal in cross section and extends in the axial direction of the plate cylinder 2. The underside and the top of the guide bar 46 are each concave and the radius of the plate cylinder 2 or the transport roller 36 aligned. A first end face 47 of the guide bar 46 forms below the transport device 27 the boundary of the storage shaft 16 for the plate feed relative to the front wall 18. A second end face 48 of the guide bar 46 forms below the transport device 27 the boundary of the storage shaft 17 for plate guiding with respect to the rear wall 23, or the lower end of the rear wall 23 pointing in the direction of the plate cylinder 2 is arranged at such a distance, forming an introduction 49, from the line of contact 24 of the last inking roller 8 seen in the direction of rotation with the plate cylinder 2, so that the printing plate 13 to be removed finds its way into this introduction 49 and can be further promoted by the storage shaft 17. This insertion 49 tapers from the plate cylinder 2 in the direction of the transport device 27 and thus runs in a wedge shape in cross section.

Zwischen der Transporteinrichtung 27 und der Andrückwalze 19 befindet sich in dem Speicherschacht 16 eine Plattenvorderkante-Ausrichteeinheit, die insgesamt mit 52 bezeichnet ist. Die Plattenvorderkante-Ausrichteeinheit 52 besteht aus einer in den Stirnseiten 34 der Ab- und Zuführeinrichtung 12 gelagerten drebaren Welle 53 mit zumindest zwei aus der Peripherie dieser Welle 53 in radialer Richtung herausstehenden Paßstiften oder Registeranschlägen 51, die mit Paßeinrichtungen 54 an den Anfängen der Druckplatten 13, 14 korrespondieren. Die Welle 53 ist über eine Schwinge 50 über ein Gelenk mit der Kolbenstange eines vorderwandfesten, gelenkig gelagerten Arbeitszylinders 55 verbunden.Between the transport device 27 and the pressure roller 19, there is a plate front edge alignment unit in the storage shaft 16, which is designated as a whole by 52. The plate leading edge alignment unit 52 consists of a rotatable shaft 53 mounted in the end faces 34 of the discharge and supply device 12 with at least two dowel pins or register stops 51 protruding radially from the periphery of this shaft 53, which are fitted with fitting devices 54 at the beginning of the pressure plates 13 , 14 correspond. The shaft 53 is connected via a rocker arm 50 via a joint to the piston rod of an articulated working cylinder 55 fixed to the front wall.

Die Ab- und Zuführeinrichtung 12 ist zu Reparatur- und Wartungszwecken des Druckwerkes 1 um zwei gestellfeste Lagerungen 56, 57 mittels einer an der Vorderwand 18 angelenkter Schwinge 59 sowie eines an der Vorderwand 18 angelenkten doppelarmigen Hebels 60 vertikal nach oben schwenkbar. Der doppelarmige Hebel 60 ist mit seinem ersten Hebelarm 58 über ein gestellfestes Lager und mit seinem zweiten Hebelarm 61 über ein Gelenk mit der Kolbenstange eines gestellfesten Arbeitszylinders 62 verbunden.The removal and supply device 12 can be pivoted vertically upwards for repair and maintenance purposes of the printing unit 1 by two bearings 56, 57 fixed to the frame by means of a rocker 59 articulated on the front wall 18 and a double-armed lever 60 articulated on the front wall 18. The double-armed lever 60 is connected with its first lever arm 58 via a frame-fixed bearing and with its second lever arm 61 via a joint to the piston rod of a working cylinder 62 fixed to the frame.

Der Plattenzylinder 2 weist in einer Grube 63 eine Plattenklemmvorrichtung 64 und eine Plattenklemm- und Spannvorrichtung 66 auf. Eine derartige Vorrichtung ist durch die DE 36 04 071 C2 bekannt. Auf den Plattenklemmvorrichtungen 64, 66 des Plattenzylinders 2 sind in der Nähe der Peripherie des Plattenzylinders 2 öffen- und schließbare Klemmklappen oder Greifereinrichtungen 67, 68 angeordnet, die jeweils mit einer Greiferauflagefläche 70 zusammenwirken. Dabei steht die Greifereinrichtung 67 mit der Vorderkante, d. h. dem Druckanfang, und die Greifereinrichtung 68 stets mit der Hinterkante, d. h. dem Druckende der jeweiligen Druckplatte 13, 14 in Verbindung. Vorgesehene Stellmittel für die Betätigung der Greifereinrichtung 67, 68 bzw. der Plattenspannvorrichtung 64, 66 werden über eine nicht dargestellte Dreheinführung an einem Zapfen des Plattenzylinders 2 mit Arbeitsmedium versorgt. Es ist aber auch möglich, Einrichtungen vorzusehen, die den Plattenzylinder 2 über dessen Stirnseite oder Mantelfläche mit einem Arbeitsmedium versorgen. Die Stellmittel können als hydraulische, pneumatische oder elektrische Aggregate ausgeführt sein. Die Greifereinrichtung 67, 68 ist in der Regel als Greiferauflageleiste ausgeführt.The plate cylinder 2 has a plate clamping device 64 and a plate clamping and clamping device 66 in a pit 63. Such a device is known from DE 36 04 071 C2. On the plate clamps 64, 66 of the plate cylinder 2 2 openable and closable clamping flaps or gripper devices 67, 68 are arranged in the vicinity of the periphery of the plate cylinder, each of which cooperates with a gripper support surface 70. The gripper device 67 is connected to the front edge, ie the start of the print, and the gripper device 68 is always connected to the rear edge, ie the print end of the respective printing plate 13, 14. Provided actuating means for actuating the gripper device 67, 68 or the plate clamping device 64, 66 are supplied with working medium via a rotary entry (not shown) on a pin of the plate cylinder 2. However, it is also possible to provide devices which supply the plate cylinder 2 with a working medium via its end face or lateral surface. The actuating means can be designed as hydraulic, pneumatic or electrical units. The gripper device 67, 68 is usually designed as a gripper support bar.

Nach Beendigung des laufenden Druckauftrages soll die Druckplatte gewechselt werden. Dazu verfährt der Plattenzylinder 2 bei angestellten Auftragswalzen 6 bis 9 mit dem Anfang 69 der Druckplatte 13 an den Auftragswalzen 9, 6, 7 vorbei, weiter bis zu einer Berührungslinie 24 zwischen der in Produktionsdrehrichtung des Plattenzylinders 2 gesehen (entgegen dem Uhrzeigersinn) letzten Auftragswalze 8 und dem Plattenzylinder 2 mit der dazwischen befindlichen Druckplatte 13. Nachdem der Druckplattenanfang 69 die Berührungslinie 24 passiert hat, öffnet die Greifereinrichtung 67, und der Druckplattenanfang 69 federt infolge seiner Eigenspannung an das untere Ende 71 der Rückwand 23, so daß der Plattenanfang 69 ab dem Berührungslinie 24 zumindest eine tangentiale Stellung zum Plattenzylinder 2 einnimmt (Fig. 1). Somit gelangt der Druckplattenanfang 69 in den sich verjüngenden Spalt 49. Zu diesem Zeitpunkt, wie später noch ausführlich beschrieben, kann eine neue Druckplatte 14 bereits in Warteposition stehen. Infolge Weiterdrehens des Plattenzylinders 2 in Produktionsdrehrichtung entgegen dem Uhrzeigersinn durchläuft der Druckplattenanfang 69 den gekrümmten unteren Teil des Speicherschachtes 17 infolge des Reibschlusses mit den Auftragswalzen 6 bis 9, wobei die Andrückrolle 38 der im unteren Teil der Ab- und Zuführeinrichtung 12 befindlichen Transporteinrichtung 27 abgestellt ist und die Luftkanäle 28, 29 permanent mit Druckluft beaufschlagt werden, so daß die sensitive Seite der Druckplatte 13, 14 stets von der Vorderwand 18 bzw. der Rückwand 23 der Zu- und Abführeinrichtung 12 beabstandet ist (Fig. 2).After the current print job has been completed, the printing plate should be changed. For this purpose, the plate cylinder 2 travels past the application rollers 9, 6, 7 with the start 69 of the printing plate 13, with the application rollers 6 to 9 turned on, up to a contact line 24 between the last application roller 8 seen in the direction of rotation of the plate cylinder 2 (counterclockwise) and the plate cylinder 2 with the printing plate 13 located therebetween Has passed line of contact 24, the gripper device 67 opens, and the pressure plate beginning 69 springs due to its inherent tension to the lower end 71 of the rear wall 23, so that the plate beginning 69 takes at least a tangential position to the plate cylinder 2 from the line of contact 24 (Fig. 1). Thus, the printing plate start 69 reaches the tapering gap 49. At this time, as will be described in detail later, a new printing plate 14 may already be in the waiting position. As a result of further rotation of the plate cylinder 2 counterclockwise in the direction of production rotation, the pressure plate beginning 69 passes through the curved lower part of the storage shaft 17 as a result of the frictional engagement with the application rollers 6 to 9, the pressure roller 38 of the transport device 27 located in the lower part of the removal and supply device 12 being switched off and the air channels 28, 29 are permanently pressurized with compressed air, so that the sensitive side of the pressure plate 13, 14 is always spaced from the front wall 18 and the rear wall 23 of the feed and discharge device 12 (FIG. 2).

Zu diesem Zeitpunkt wird die neue Druckplatte 14 mit ihrem Druckplattenanfang 72 dem Plattenzylinder 2 zugeführt und darauf befestigt.At this time, the new printing plate 14 with its printing plate start 72 is fed to the plate cylinder 2 and fastened thereon.

Infolge Weiterdrehens des Plattenzylinders 2 in Produktinsdrehrichtung erreicht das Ende der Druckplatte 13 die Berührungslinie 24 zwischen der letzten Auftragswalze 8 und dem Plattenzylinder 2 mit dem dazwischen angeordneten Ende der Druckplatte 13. Die Greifereinrichtung 67 öffnet und die Andrückrolle 38 drückt die Druckplatte 13 mit ihrem weichelastischen Belag gegen die angetriebene Transportwalze 36, so daß die Druckplatte 13 weiter in vertikaler Richtung zum Ausgang der Ab- und Zuführeinrichtung 12 gefördert wird. Die Auftragswalzen 6 bis 9 können abgestellt werden (Fig. 3).As a result of further rotation of the plate cylinder 2 in the direction of product rotation, the end of the printing plate 13 reaches the line of contact 24 between the last application roller 8 and the plate cylinder 2 with the intermediate end of the pressure plate 13. The gripper device 67 opens and the pressure roller 38 presses the pressure plate 13 with its flexible coating against the driven transport roller 36, so that the pressure plate 13 is conveyed further in the vertical direction to the outlet of the discharge and feed device 12. The application rollers 6 to 9 can be turned off (Fig. 3).

Zu diesem Zeitpunkt wird die Druckplatte 14 durch Drehung des Plattenzylinders 2 weiter aufgebracht.At this time, the printing plate 14 is further applied by rotating the plate cylinder 2.

Während der Plattenzylinder 2 in Produktionsdrehrichtung weiterdreht, erreicht die Druckplatte 13 infolge der Förderbewegung der Transporteinrichtung 27 mit ihrem Druckplattenende die Finger 37, auf welchen die Druckplatte 13 nunmehr zum Herausnehmen bereitgestellt ist (Fig. 4). Zeitgleich liegt die neue Druckplatte 14 mit ihrem Plattenende auf dem Plattenzylinder 2 auf und wird festgeklemmt.While the plate cylinder 2 continues to rotate in the direction of production rotation, the pressure plate 13, as a result of the conveying movement of the transport device 27, reaches the fingers 37 with its end of the pressure plate, on which the pressure plate 13 is now provided for removal (FIG. 4). At the same time, the new printing plate 14 rests with its plate end on the plate cylinder 2 and is clamped.

Alternativ zu dem in Fig. 1 beschriebenen Verfahrensschritt kann der Beginn der Plattenabführung vom Plattenzylinder 2 auch so erfolgen, daß nach Erreichen eines zwischen dem Umfang der Feuchtauftragswalze 9 und dem Umfang des Plattenzylinders 2 liegenden Berührungslinie 73 durch den Plattenanfang 69 alle am Umfang des Plattenzylinders 2 anliegenden Auftragswalzen 6 bis 9 abgestellt werden, d. h. sie werden durch bekannte Mittel einige Millimeter entfernt.As an alternative to the method step described in FIG. 1, the start of the plate removal from the plate cylinder 2 can also take place in such a way that after reaching a line of contact 73 between the circumference of the dampening roller 9 and the circumference of the plate cylinder 2 through the plate start 69, all on the circumference of the plate cylinder 2 adjacent application rollers 6 to 9 are parked, ie they are removed a few millimeters by known means.

Gleichzeitig dazu öffnet die Greiferleiste 67, so daß sich die Druckplatte 13 entspannt und sich mit ihrem Anfang 69 lose gegen die Auftragswalzen 6 bis 9 legt, so daß die Förderung der Druckplatte 13 zum Speicherschacht 17 form- und kraftschlüssig durch die Greiferleiste 68 erfolgt.At the same time, the gripper bar 67 opens, so that the pressure plate 13 relaxes and loosely rests with its start 69 against the application rollers 6 to 9, so that the pressure plate 13 is conveyed to the storage shaft 17 in a positive and non-positive manner by the gripper bar 68.

Nachfolgend wird die Plattenzuführung einer neuen Druckplatte 14 zu dem Plattenzylinder 2 ausführlicher dargestellt. Die zuzuführende Druckplatte 14 ist mit ihrem Druckplattenanfang 72 in den Speicherschacht 16 der Ab- und Zuführeinrichtung 12 bei nicht anliegender Andrückrolle 42 der Transporteinrichtung 27 eingeführt und greift mit ihren am Plattenanfang befindlichen Paßschlitzen 54 in die auf der Welle 53 befindlichen und in den unteren Teil des Speicherschachtes 16 hineinragenden Paßstifte 51 ein, womit ein Ausrichten der Druckplatte 14 erfolgt. Die Druckplatte 14 befindet sich somit auf der Platten-Ausrichteeinheit 52 in Warteposition (Fig. 1). Während sich der Plattenzylinder 2 mit seiner geöffneten Greiferleiste 67 dem unteren Ende des Speicherschachtes 16 nähert, wird die Welle 53 um 90° gedreht, so daß die Paßstifte 51 außer Eingriff kommen mit den Paßschlitzen 54 am Plattenanfang 72 der Druckplatte 14. Zeitgleich dazu wird die mit einem weichelastischen Belag versehene Andrückrolle 42 gegen die Druckplatte 14 und somit gegen die angetriebene und im Gegenuhrzeigersinn laufende Transportwalze 36 der Transporteinrichtung 27 gedrückt. Die Andrückrolle 42 und die Transportwalze 36 laufen mit einer Umfangsgeschwindigkeit, die das 1,1 bis 1,2-fache der Umfangsgeschwindigkeit des Plattenzylinders 2 beträgt, so daß die ausgerichtete Druckplatte 14 dem Plattenzylinder 2 beschleunigt zugeführt wird und mit den Paßschlitzen 54 gegen Anschläge oder Paßstifte 51 fährt, die auf dem Plattenzylinder 2, insbesondere aber auf der in der Zylindergrube 63 befindlichen Plattenklemmvorrichtung 64 angebracht wird. Nachfolgend schließt die Greifereinrichtung 67 und hält den Druckplattenanfang 72 form- und kraftschlüssig fest. Die mit einem weichelastischen Belag versehene Andrückwalze 19 wird gegen den Plattenzylinder 2 bzw. gegen die dazwischenliegende Druckplatte 14 angestellt (Fig. 2). Der Plattenzylinder 2 dreht nunmehr in Produktionsdrehrichtung weiter und die gegen die Druckplatte 14 drückende Andrückrolle 42 wird abgeschwenkt und somit in Ruhestellung bebracht (Fig. 3). Infolge Weiterdrehens des Plattenzylinders 2 verläßt die abzuführende Druckplatte 13 den Plattenzylinder 2 und die dadurch geöffnete Greiferleiste 68 kann das Ende der Druckplatte 14 kraft- und formschlüssig erfassen. Die Andrückwalze 19 wird abgestellt. Der Plattenwechselvorgang ist nunmehr abgeschlossen (Fig. 4).The plate feed of a new printing plate 14 to the plate cylinder 2 is shown in more detail below. The pressure plate 14 to be fed is inserted with its pressure plate start 72 into the storage shaft 16 of the discharge and feed device 12 when the pressure roller 42 of the transport device 27 is not in contact and engages with its fitting slots 54 located at the start of the plate into the shaft 53 located on the shaft 53 and in the lower part of the shaft Memory shaft 16 protruding dowel pins 51, whereby the printing plate 14 is aligned. The pressure plate 14 is thus on the plate alignment unit 52 in the waiting position (FIG. 1). While the plate cylinder 2 with its open gripper bar 67 approaches the lower end of the storage shaft 16, the shaft 53 is rotated by 90 °, so that the dowel pins 51 disengage from the fitting slots 54 at the plate start 72 of the pressure plate 14 with a soft elastic covering pressure roller 42 pressed against the pressure plate 14 and thus against the driven and counterclockwise transport roller 36 of the transport device 27. The pressure roller 42 and the transport roller 36 run with a Peripheral speed, which is 1.1 to 1.2 times the peripheral speed of the plate cylinder 2, so that the aligned pressure plate 14 is fed to the plate cylinder 2 accelerated and moves with the fitting slots 54 against stops or dowel pins 51 which are on the plate cylinder 2, but in particular is mounted on the plate clamping device 64 located in the cylinder pit 63. The gripper device 67 then closes and holds the pressure plate start 72 in a positive and non-positive manner. The pressure roller 19, which is provided with a soft, elastic covering, is set against the plate cylinder 2 or against the pressure plate 14 located therebetween (FIG. 2). The plate cylinder 2 now rotates further in the direction of production rotation and the pressure roller 42 pressing against the pressure plate 14 is pivoted away and thus brought into the rest position (FIG. 3). As a result of further rotation of the plate cylinder 2, the pressure plate 13 to be removed leaves the plate cylinder 2 and the gripper bar 68 thereby opened can grip the end of the pressure plate 14 in a non-positive and positive manner. The pressure roller 19 is turned off. The plate changing process is now complete (Fig. 4).

Alternativ zu dem nach Fig. 2 beschriebenen Verfahrensschritt kann die Plattenzuführung zum Plattenzylinder 2 auch so erfolgen, daß eine mit Paßeinrichtungen 54 an ihrem Plattenanfang 72 versehene Druckplatte 14 aus dem Speicherschacht 16 in Richtung des Plattenzylinders 2 bis zur Plattenvorderkante-Ausrichteeinheit 52 geführt, anschließend dort ausgerichtet und in Wartestellung gehalten wird. Anschließend unterbricht der Plattenzylinder 2 seine Drehbewegung und die aus der Andrückrolle 42 und aus der angetriebenen Transportwalze 36 bestehende Transporteinrichtung 27 fördert die Druckplatte 14 in tangetialer Richtung zu einer Greiferauflagefläche 70 am Plattenzylinder 2 (Fig. 10), auf welcher Registeranschläge 51 angeordnet sind.As an alternative to the process step described in FIG. 2, the plate feed to the plate cylinder 2 can also take place in such a way that a pressure plate 14 provided with fitting devices 54 at its plate start 72 from the storage shaft 16 in the direction of the plate cylinder 2 up to the plate front edge alignment unit 52 guided, then aligned there and held on hold. The plate cylinder 2 then interrupts its rotational movement and the transport device 27 consisting of the pressure roller 42 and the driven transport roller 36 conveys the pressure plate 14 in the tangential direction to a gripper support surface 70 on the plate cylinder 2 (FIG. 10), on which register stops 51 are arranged.

Fig. 7 zeigt die Darstellung einer Steuereinrichtung und eines Steuerungsrechners 74. Der Steuerungsrechner 74 erhält seine Informationen einerseits von einem Postionsgeber 76 zur Überwachung des Anliegens der Druckplatte 13, 14 mit ihren Paßeinrichtungen 54 an dem Anschlag 51 auf dem Plattenzylinder 2. Andererseits erhält der Steuerungsrechner 74 Informationen über einen am Plattenzylinder 2 angebrachten Positionsgeber 77. Weiterhin ist der Steuerungsrechner 74 mit einer Anzahl von Elektro-Magnetventilen 78 verbunden, die bei einem Kommando Druckplattenwechsel in Abhängigkeit von den Stellungen des Plattenzylinders 2 und in Verbindung mit einer geeigneten Software in richtiger Reihenfolge schalten und die Arbeitszylinder mit Arbeitsmedium, z. B. Druckluft aus einer Druckquelle 79 versorgen. Es werden ebenfalls sämtliche elektrischen Antriebe, z. B. Antrieb 81 für das Druckwerk und somit auch für den Plattenzylinder 2, mittels des Steuerungsrechners 74 gesteuert. Die Software des Steuerungsrechners 74 arbeitet nach einem Ablaufplan (Fig. 8 und 9), so daß die Schritte 101 bis 107 bzw. 201 bis 216 automatisch nacheinander durchgeführt werden.7 shows the representation of a control device and a control computer 74. The control computer 74 receives its information on the one hand from a position transmitter 76 for monitoring the contact of the printing plate 13, 14 with its fitting devices 54 on the stop 51 on the plate cylinder 2. On the other hand, the control computer receives 74 Information about a position sensor 77 attached to the plate cylinder 2. Furthermore, the control computer 74 is connected to a number of electro-magnetic valves 78 which, when a command is given, change the printing plate depending on the positions of the plate cylinder 2 and in connection with suitable software in the correct order and the working cylinder with working medium, e.g. B. supply compressed air from a pressure source 79. All electric drives, e.g. B. drive 81 for the printing unit and thus also for the plate cylinder 2, controlled by the control computer 74. The software of the control computer 74 works according to a flow chart (FIGS. 8 and 9), so that the Steps 101 to 107 or 201 to 216 are carried out automatically one after the other.

Fig. 8 zeigt den Ablaufplan für das Lösen und Abführen der Druckplatte 13 vom Plattenzylinder 2 bzw. Einbringen in den Speicherschacht 17 der Ab- und Zuführeinrichtung 12. Durch Betätigen eines Startauslösers 101 wird eine Abfrage 102 der Sicherheitsbedingungen durchgeführt, z. B. ist die Ab- und Zuführeinrichtung 12 in Arbeitsstellung. So könnte sich die Einrichtung 12 auch mittels des manuell betätigbaren Arbeitszylinders 62 auch in einer zylinderfernen Stellung befinden. Entsprechende Sensoren werden daraufhin aktiviert. U. a. erfolgt auch die Abfrage, ob der Speicherschacht 17 frei ist. Sind diese Bedingungen nicht erfüllt, so wird ein Störsignal 103 erzeugt. Sind sämtliche Sicherheitsbedingungen erfüllt, so wird ein Anlaufwarnsignal 104 erzeugt. Durch eine erneute Betätigung des Startauslösers 101 wird der Plattenzylinder 2 im Schleichgang in die Plattenzylinderstellung A (PZ-Stellung A) 105 nach Fig. 1 verdreht. In der Plattenzylinderstellung A hat der Anfang 69 der Druckplatte 13 an der Berührungslinie 24 gerade Kontakt mit der Auftragswalze 8 und dem Plattenzylinder 2. Nach Passieren der Berührungslinie 24 durch den Plattenanfang 69, wird in einem Schritt 106 die Plattenspannung abgestellt, die Greiferleiste 67 der Plattenklemmvorrichtung 69 wird geöffnet und die Andrückrolle 38 wird durch den Arbeitszylinder 41 ausgestellt. Danach erreicht das Ende der Druckplatte 13 nach Weiterdrehen des Plattenzylinders 2 in einem Schritt 107 (Fig. 3) die Berührungslinie 24 zwischen der letzten Auftragswalze 8 und dem Plattenzylinder 2 (PZ-Stellung B). In einem nachfolgenden Schritt 108 öffnet die Greiferleiste 68 der Plattenklemm- und Spanneinrichtung 66 und die Andrückrolle 38 im Speicherschacht 17 wird angestellt. Die Druckplatte 13 steht auf den Fingern 37 zum Herausnehmen bereit.FIG. 8 shows the flowchart for releasing and removing the printing plate 13 from the plate cylinder 2 or inserting it into the storage shaft 17 of the removal and supply device 12. By actuating a start trigger 101, a query 102 of the safety conditions is carried out, e.g. B. is the discharge and feed device 12 in the working position. Thus, the device 12 could also be in a position remote from the cylinder by means of the manually operated working cylinder 62. Appropriate sensors are then activated. Among other things there is also a query as to whether the storage slot 17 is free. If these conditions are not met, an interference signal 103 is generated. If all safety conditions are met, a start-up warning signal 104 is generated. By actuating the start trigger 101 again, the plate cylinder 2 is rotated at creep speed into the plate cylinder position A (PZ position A) 105 according to FIG. 1. In plate cylinder position A, the beginning 69 of the printing plate 13 has straight contact with the application roller 8 and the plate cylinder 2 at the contact line 24. After passing the contact line 24 through the plate start 69, the plate tension is switched off in a step 106, the gripper bar 67 of the plate clamping device 69 is opened and the pressure roller 38 is issued by the working cylinder 41. Thereafter, the end of the pressure plate 13 is reached in one step after further rotation of the plate cylinder 2 107 (FIG. 3) the line of contact 24 between the last application roller 8 and the plate cylinder 2 (PZ position B). In a subsequent step 108, the gripper bar 68 of the plate clamping and tensioning device 66 opens and the pressure roller 38 in the storage shaft 17 is started. The pressure plate 13 is ready for removal on the fingers 37.

Die Fig. 9 zeigt einen Ablaufplan, nach welchem der Steuerungsrechner 74 in Verbindung mit den anderen Stellungsanzeigern (z. B. Drehwinkelgeber 77) arbeitet, damit die Druckplatte 14 dem Plattenzylinder 2 zugeführt wird. Durch Betätigen eines Startauslösers 201 wird eine Abfrage 202 der Sicherheitsbedingungen durchgeführt (z. B. ist die Ab- und Zuführeinrichtung 12 in Arbeitsstellung). Entsprechende Sensoren werden daraufhin aktiviert. Sind nicht sämtliche Sicherheitsbedingungen erfüllt, so wird ein Störsignal 203 erzeugt. Bei Erfüllung sämtlicher Sicherheitsbedingungen wird ein Anlaufwarnsignal 204 gegeben. Eine erneute Betätigung des Startauslösers 201 aktiviert den Antrieb 81 des Plattenzylinders 2. Eine anschließende Abfrage 205 betrifft das Vorhandensein einer neuen Druckplatte 14 in dem Speicherschacht 16, wobei der Druckplattenanfang 72 der Druckplatte 14 mit seinen Paßeinrichtungen 54 die Anschläge oder Paßstifte 51 formschlüssig aufnimmt. Fehlt die Druckplatte 14, so wird ein Störsignal 206 erzeugt. Während sich der Plattenzylinder 2 mit seiner geöffneten Greifereinrichtung 67 einer Zylinderstellung C (Fig. 2) am unteren Ende des Speicherschachtes 16 nähert, wird die Ausrichteeinheit 52 in einem Schritt 207 mittels Betätigung des Arbeitszylinders 55 ausgeschaltet und zeitgleich die Andrückrolle 42 mittels Betätigung des Arbeitszylinders 44 in Richtung umlaufender Transportwalze 38 gedrückt. In einem nachfolgenden Schritt 208 wird der Plattenzylinder 2 in eine Stellung C (Fig. 2) gedreht, so daß die Druckplatte 14 dem Plattenzylinder 2 beschleunigt zugeführt wird. In einem weiteren Schritt 209 wird nochmals geprüft, ob die Greiferleiste 67 noch geöffnet ist und in einem Schritt 210 wird geprüft, ob der Druckplattenanfang 72 der ausgerichteten Druckplatte 14 an den Anschlägen 51 auf dem Plattenzylinder 2 anliegt. Der Positionsgeber 76 und der Drehwinkelgeber 77 sind eingeschaltet. Bei Nichtanliegen oder nicht ordnungsgemäßem Anliegen des Druckplattenanfangs 72 wird ein Störsignal erzeugt. Nachfolgend wird in einem Schritt 211 die Greifereinrichtung 67 geschlossen und der Druckplattenanfang 72 der Druckplatte 14 kraft- und formschlüssig gehalten sowie die Andrückwalze 19 mittels des Arbeitszylinders 21 an die Peripherie des Plattenzylinders 2 geschwenkt. In einem weiteren Schritt 212 wird die Andrückrolle 38 mittels Betätigung des Arbeitszylinders 41 abgestellt. Nach weiterer Drehung des Plattenzylinders 2 in Produktionsrichtung entgegen dem Uhrzeigersinn wird in einem nächsten Schritt 213 eine Plattenzylinderstellung D (Fig. 4) erreicht, in welcher das Ende der Druckplatte 14 auf dem Plattenzylinder 2 liegt und nachfolgend in einem Schritt 214 durch die Greiferleiste 68 kraftschlüssig gehalten wird. Die Druckplatte 14 wird gespannt. Die Andrückwalze 19 wird in einem Schritt 215 mittels Betätigung durch den Arbeitszylinder 21 abgestellt. Der Plattenwechselvorgang ist beendet. Danach wird ein Signal Ende 216 erzeugt.FIG. 9 shows a flow chart according to which the control computer 74 works in conjunction with the other position indicators (for example rotary angle transmitter 77) so that the printing plate 14 is fed to the plate cylinder 2. By actuating a start trigger 201, an interrogation 202 of the safety conditions is carried out (for example, the discharge and supply device 12 is in the working position). Appropriate sensors are then activated. If all safety conditions are not met, an interference signal 203 is generated. A start warning signal 204 is given when all safety conditions are met. A renewed actuation of the start trigger 201 activates the drive 81 of the plate cylinder 2. A subsequent query 205 relates to the presence of a new pressure plate 14 in the storage shaft 16, the pressure plate start 72 of the pressure plate 14 with its fitting devices 54 receiving the stops or dowel pins 51 in a form-fitting manner. If the pressure plate 14 is missing, an interference signal 206 is generated. While the plate cylinder 2 with its open gripper device 67 is in a cylinder position C (FIG. 2) approaches the lower end of the storage shaft 16, the alignment unit 52 is switched off in a step 207 by actuating the working cylinder 55 and at the same time the pressure roller 42 is pressed in the direction of the rotating transport roller 38 by actuating the working cylinder 44. In a subsequent step 208, the plate cylinder 2 is rotated into a position C (FIG. 2), so that the printing plate 14 is fed to the plate cylinder 2 at an accelerated rate. In a further step 209 it is checked again whether the gripper bar 67 is still open and in a step 210 it is checked whether the pressure plate start 72 of the aligned pressure plate 14 is in contact with the stops 51 on the plate cylinder 2. The position sensor 76 and the rotary angle sensor 77 are switched on. If the pressure plate start 72 is not applied or is not properly applied, an interference signal is generated. Subsequently, in a step 211, the gripper device 67 is closed and the pressure plate start 72 of the pressure plate 14 is held in a non-positive and positive manner and the pressure roller 19 is pivoted to the periphery of the plate cylinder 2 by means of the working cylinder 21. In a further step 212, the pressure roller 38 is switched off by actuating the working cylinder 41. After further rotation of the plate cylinder 2 counterclockwise in the production direction, a plate cylinder position D (FIG. 4) is reached in a next step 213, in which the end of the printing plate 14 lies on the plate cylinder 2 and subsequently in a step 214 through the Gripper bar 68 is held non-positively. The pressure plate 14 is tensioned. The pressure roller 19 is turned off in a step 215 by actuation by the working cylinder 21. The plate changing process is finished. Then an end 216 signal is generated.

Die Arbeitszylinder 21, 41, 44, 55, 62 sind als doppeltwirkende pneumatische Arbeitszylinder ausgeführt, deren Zuführ- und Abführstutzen für die Druckluft nicht dargestellt sind. Die in der Zylindergrube 63 angeordnete Plattenklemmvorrichtung 64 zum Befestigen des Druckplattenanfanges 69, 72 kann auch als kombinierte Plattenklemm- und Spannvorrichtung ausgeführt sein. Die Farbauftragswalze 8 kann auch als separate Walze ausgeführt sein, d. h. beispielsweise die Funktion einer Umlenkwalze ausüben und getrennt betätigbar, d. h. von den Farbauftragswalzen 6, 7, 9 getrennt an den Plattenzylinder 2 anstellbar sein.The working cylinders 21, 41, 44, 55, 62 are designed as double-acting pneumatic working cylinders, the supply and discharge connections for the compressed air are not shown. The plate clamping device 64 arranged in the cylinder pit 63 for fastening the pressure plate start 69, 72 can also be designed as a combined plate clamping and tensioning device. The inking roller 8 can also be designed as a separate roller, i. H. for example, perform the function of a deflecting roller and can be actuated separately, d. H. from the inking rollers 6, 7, 9 can be adjusted separately to the plate cylinder 2.

Fig. 10 zeigt einen Schnitt X - X nach Fig. 6 mit einer vergrößerten Detaildarstellung nach Fi. 2. Von einer Rotationsachse 82 des Plattenzylinder 2, ausgehend als Kreismittelpunkt, verläuft ein Kreis 83 mit dem Radius r1 für den Umfang des Plattenzylinders 2 mit seiner Mantelfläche. Mit einem Radisu r2 verläuft von der Rotationsachse 82 des Plattenzylinders 2 ein weiterer Kreis 84, der fast die Greiferauflagefläche 70 erreicht. Der Radius r2 ist kleiner als der Radius r1.FIG. 10 shows a section X - X according to FIG. 6 with an enlarged detailed illustration according to FIG. 2. Starting from a rotation axis 82 of the plate cylinder 2, starting from the center of the circle, a circle 83 with the radius r 1 runs for the circumference of the plate cylinder 2 with its outer surface. With a Radisu r 2 extends from the axis of rotation 82 of the plate cylinder 2, a further circle 84, which almost reaches the gripper support surface 70. The radius r 2 is smaller than the radius r 1 .

Der Speicherschacht 16 weist an seinem plattenzylindernahen Teil ein Schachtende 86 auf, welches tangential zu einem Kreis 83 oder 84 verläuft, dessen Radius zwischen dem Radius r1 und r2 liegt. Das Schachtende 86 verläuft tangential zum Plattenzylinder 2 im III. Quadranten eines rechtwinkligen Koordinatensystems bezogen auf den Plattenzylinderquerschnitt. Der Speicherschacht 17 weist an seinem plattenzylindernahen Teil ein Schachtende 87 auf, welches tangential zu einem Kreis 83 oder 84 verläuft, dessen Radius zwischen dem Radius r1 und r2 liegt. Das Schachtende 87 verläuft tangential zum Plattenzylinder 2 im II. Quadranten eines rechtwinkligen Koordinatensystems (Fig. 1). Die Schachtenden 86, 87 liegen sich jeweils gegenüber im Bereich zweier benachbarter Quadranten II und III. Sie können sich aber auch in den benachbarten Quadranten I oder IV oder I und II gegenüberliegen.The storage slot 16 points at his part near the plate cylinder has a shaft end 86 which extends tangentially to a circle 83 or 84, the radius of which lies between the radius r 1 and r 2 . The shaft end 86 extends tangentially to the plate cylinder 2 in III. Quadrants of a right-angled coordinate system related to the plate cylinder cross-section. The storage shaft 17 has on its part near the plate cylinder a shaft end 87 which extends tangentially to a circle 83 or 84, the radius of which lies between the radius r 1 and r 2 . The shaft end 87 extends tangentially to the plate cylinder 2 in the second quadrant of a right-angled coordinate system (FIG. 1). The shaft ends 86, 87 lie opposite each other in the area of two adjacent quadrants II and III. However, they can also face each other in the adjacent quadrants I or IV or I and II.

Der Druckplattenanfang 72 der Druckplatte 14 wird, nachdem sie direkt oder indirekt gegen auf dem Plattenzylinder 2 angeordnete Registeranschläge 51 gefördert wurde, mittels Greifereinrichtung 67 kraft- und / oder formschlüssig festgehalten.The pressure plate start 72 of the pressure plate 14, after it has been conveyed directly or indirectly against register stops 51 arranged on the plate cylinder 2, is held in a non-positive and / or positive manner by means of gripper device 67.

TeilelisteParts list

11
Druckwerk, SeitengestellPrinting unit, side frame
22nd
PlattenzylinderPlate cylinder
33rd
GummituchzylinderBlanket cylinder
44th
GegendruckzylinderImpression cylinder
55
--
66
FarbauftragswalzeInking roller
77
FarbauftragswalzeInking roller
88th
FarbauftragswalzeInking roller
99
Farb- und FeuchtauftragswalzeInk and dampening roller
1010th
--
1111
ZugangsseiteAccess page
1212th
Ab- und ZuführeinrichtungExhaust and feed device
1313
Druckplatte, abzuführendePressure plate to be discharged
1414
Druckplatte, zuzuführendePressure plate to be fed
1515
--
1616
Speicherschacht, Zuführung (14)Storage shaft, feeder (14)
1717th
Speicherschacht, Abführung (13)Storage shaft, discharge (13)
1818th
VorderwandFront wall
1919th
AndrückwalzePressure roller
2020th
--
2121
Arbeitszylinder (19)Working cylinder (19)
2222
WinkelhebelAngle lever
2323
RückwandBack wall
2424th
Berührungslinie (8, 2)Contact line (8, 2)
2525th
--
2626
--
2727
ZwischenwandPartition
2828
LuftkanalAir duct
2929
LuftkanalAir duct
3030th
--
3131
Öffnungopening
3232
LuftkanalwandAir duct wall
3333
LuftkanalwandAir duct wall
3434
Stirnseite (12)End face (12)
3535
--
3636
TransportwalzeTransport roller
3737
Fingerfinger
3838
AndrückrollePressure roller
3939
Winkelhebel (38)Angle lever (38)
4040
--
4141
Arbeitszylinder (38)Working cylinder (38)
4242
AndrückrollePressure roller
4343
Winkelhebel (42)Angle lever (42)
4444
Arbeitszylinder (42)Working cylinder (42)
4545
--
4646
FührungsleisteGuide bar
4747
Stirnseite, erste (46)End face, first (46)
4848
Stirnseite, zweite (46)Front, second (46)
4949
Einführungintroduction
5050
SchwingeSwingarm
5151
RegisteranschlagRegister stop
5252
Plattenvorderkante-AusrichteeinheitPlate front edge alignment unit
5353
Wellewave
5454
PaßeinrichtungFitting device
5555
Arbeitszylinder (52)Working cylinder (52)
5656
Lagerung (58)Storage (58)
5757
Lagerung (59)Storage (59)
5858
Hebelarm, ersterLever arm, first
5959
Hebelarm, doppelarmigLever arm, double-armed
6060
Hebelarm, doppelarmigLever arm, double-armed
6161
Hebelarm, zweiterLever arm, second
6262
Arbeitszylinder (12)Working cylinder (12)
6363
Grube (2)Pit (2)
6464
PlattenklemmvorrichtungPlate clamping device
6565
--
6666
Plattenklemm- und SpannvorrichtungPlate clamping and tensioning device
6767
Greifereinrichtung (2)Gripper device (2)
6868
Greifereinrichtung (2)Gripper device (2)
6969
Druckplattenanfang (13)Printing plate start (13)
7070
Greiferauflagefläche (64, 66)Gripper support surface (64, 66)
7171
Druckplattenende (23)Pressure plate end (23)
7272
Druckplattenanfang (14)Printing plate start (14)
7373
Berührungslinie (9, 2)Contact line (9, 2)
7474
SteuerungsrechnerControl computer
7575
--
7676
PositionsgeberPosition transmitter
7777
DrehwinkelgeberAngle of rotation encoder
7878
Elektro-MagnetventilElectric solenoid valve
7979
DruckquellePressure source
8080
--
8181
Antriebdrive
8282
Rotationsachse (2)Rotation axis (2)
8383
Kreis Plattenzylinder - Mantel (r1)Circle plate cylinder - jacket (r 1 )
8484
Kreis (r2)Circle (r 2 )
8585
--
8686
Schachtende (16)Shaft end (16)
8787
Schachtende (17)Shaft end (17)
r1 r 1
Radius Plattenzylinder - MantelRadius plate cylinder - jacket
r2 r 2
Radiusradius
101 bis 107101 to 107
Folgeschritte des Ablaufplanes "Druckplattenabfuhr"Follow-up steps of the "Printing plate removal" schedule
201 bis 216201 to 216
Folgeschritte des Ablaufplanes "Druckplattenzufuhr"Follow-up steps of the flow chart "pressure plate feed"
I bis IVI to IV
Quadranten des Querschnittes des Plattenzylinders 2Quadrants of the cross section of the plate cylinder 2
A bis DA to D
Stellung des Plattenzylinders 2Position of the plate cylinder 2

Claims (3)

  1. A process for supplying printing plates to a plate cylinder of a rotary printing machine, in which
    first a printing plate (14) provided with a register means (54) at its printing plate start (72) is guided from a storage chute (16) in the direction of the plate cylinder (2) as far as a register stop (51) of a plate front edge aligning unit (52), and there
    is then aligned and kept in the wait position,
    then the printing plate (14) is accelerated by means of a transporting means (42, 36) to a speed which is higher than the peripheral speed of the plate cylinder (2) running in the production direction and is conveyed towards register stops (51) arranged directly or indirectly on the plate cylinder (2), and is aligned there,
    then the printing plate start (72) of the printing plate (14) is held fixed there with force-fit and/or with form-fit by gripping means (67),
    then the plate cylinder (2), together with the printing plate (14), is turned further in the production direction, bearing against a pressure contact roller (19), until one end of the printing plate (14) lies on the outer surface of the plate cylinder (2), and
    finally, in the operating region of a cylinder cavity (63), is held with force-fit by gripping means (68).
  2. A process for supplying printing plates to a plate cylinder of a rotary printing machine,
    first a printing plate (14) provided with register means (54) at its printing plate start (72) is guided from a storage chute (16) in the direction of the plate cylinder (2) as far as a plate front edge aligning unit (52), and there
    is then aligned and kept in the wait position, and
    then the plate cylinder (2) interrupts its rotary motion, then the printing plate (14) is conveyed by means of a transporting means (42, 36) towards register stops (51) arranged directly or indirectly on the plate cylinder (2),
    then, the printing plate start (72) of the printing plate (14) is held fixed there with force-fit and/or with form-fit by gripping means (67), in that the plate cylinder (2) subsequently continues to turn in the production direction, bearing against a pressure contact roller (19), until the end of the printing plate (14) lies on the plate cylinder (2), and
    finally, in the operating region of a cylinder cavity (63), is held with force-fit by gripping means (68).
  3. A process according to Claim 1 or 2, characterized in that the end of the printing plate (14) is additionally held with form-fit.
EP93920645A 1992-09-18 1993-09-16 Printing plates feeding process Expired - Lifetime EP0660776B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4231900 1992-09-18
DE4231900 1992-09-18
PCT/DE1993/000874 WO1994006628A1 (en) 1992-09-18 1993-09-16 Printing plates feeding process

Publications (2)

Publication Number Publication Date
EP0660776A1 EP0660776A1 (en) 1995-07-05
EP0660776B1 true EP0660776B1 (en) 1996-12-27

Family

ID=6468663

Family Applications (2)

Application Number Title Priority Date Filing Date
EP93920645A Expired - Lifetime EP0660776B1 (en) 1992-09-18 1993-09-16 Printing plates feeding process
EP93920648A Expired - Lifetime EP0660778B1 (en) 1992-09-18 1993-09-17 Process and device for the removal of printing plates

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP93920648A Expired - Lifetime EP0660778B1 (en) 1992-09-18 1993-09-17 Process and device for the removal of printing plates

Country Status (5)

Country Link
US (2) US5555811A (en)
EP (2) EP0660776B1 (en)
JP (2) JPH08501036A (en)
DE (4) DE4394496D2 (en)
WO (2) WO1994006628A1 (en)

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JPH07148911A (en) * 1993-11-26 1995-06-13 Sakurai Graphic Syst:Kk Auxiliary device for setting press plate for printer
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JP2691974B2 (en) * 1994-11-16 1997-12-17 株式会社東京機械製作所 Plate support device and plate attachment / detachment device
DE19507908C2 (en) * 1995-03-07 1999-12-09 Heidelberger Druckmasch Ag Device for pulling and holding a printing plate, which was removed from a plate cylinder of a rotary printing press
FR2732268B1 (en) * 1995-03-31 1997-06-20 Heidelberg Harris Sa DEVICE FOR EXCHANGING PRINTING PLATES
FR2735418B1 (en) * 1995-06-19 1997-08-22 Heidelberg Harris Sa DEVICE FOR EXCHANGING PLATES OF PRINTING UNITS OF PRINTING MACHINES
US6113346A (en) 1996-07-31 2000-09-05 Agfa Corporation Method for loading and unloading a supply of plates in an automated plate handler
DE19803727A1 (en) * 1998-01-30 1999-08-05 Heidelberger Druckmasch Ag Method and device for automatically feeding and / or removing printing plates to / from the plate cylinder of a printing press
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US6729234B2 (en) * 2002-04-05 2004-05-04 Agfa Corporation Actuation system in an imaging system
DE102004022866A1 (en) 2003-07-11 2005-01-27 Koenig & Bauer Ag Devices and methods for raising and/or lowering a printing form
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DE102020209465B3 (en) * 2020-07-28 2021-07-15 Heidelberger Druckmaschinen Aktiengesellschaft Printing plate gripping system

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Also Published As

Publication number Publication date
WO1994006628A1 (en) 1994-03-31
JPH08501038A (en) 1996-02-06
DE59304916D1 (en) 1997-02-06
WO1994006630A1 (en) 1994-03-31
DE59304918D1 (en) 1997-02-06
EP0660778A1 (en) 1995-07-05
DE4394496D2 (en) 1995-09-21
EP0660778B1 (en) 1996-12-27
DE4394497D2 (en) 1997-07-24
US5540151A (en) 1996-07-30
EP0660776A1 (en) 1995-07-05
JPH08501036A (en) 1996-02-06
US5555811A (en) 1996-09-17

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