Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H3/00—Separating articles from piles
  • B65H3/08—Separating articles from piles using pneumatic force
  • B65H3/0808—Suction grippers
• • 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
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
  • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
  • B41P2227/60—Devices for transferring printing plates
  • B41P2227/62—Devices for introducing printing plates
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2701/00—Handled material; Storage means
  • B65H2701/10—Handled articles or webs
  • B65H2701/18—Form of handled article or web
  • B65H2701/182—Piled package
  • B65H2701/1826—Arrangement of sheets
  • B65H2701/18262—Ordered set of articles forming one batch
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2701/00—Handled material; Storage means
  • B65H2701/10—Handled articles or webs
  • B65H2701/19—Specific article or web
  • B65H2701/1928—Printing plate

Definitions

• the invention relates to the separation of a printing plate for offset printing from a plate assembly comprising a plurality of printing plates and a device for this purpose.
• the printing plates are preferably printing plates for roll offset printing, in particular in newspaper printing.
• a paper web is passed through a printing tower and printed on both sides in 4 colors.
• a printing unit is used for each color and web page.
• a printing unit can print several pages at the same time, depending on the type of machine.
• On a single plate cylinder several printing plates are usually mounted side by side or circumferentially one behind the other.
• Pressure plates are thin metal plates, eg aluminum plates with thicknesses of typically 0.1 mm to 0.3 mm, which have ink-carrying and non-ink-conducting areas on the upper side.
• the number of maximum in a printing unit side by side mountable printing plates and thus the number of pages that are adjacent to each other on a paper web is a design feature of a printing press.
• the number of pressure plates that can be mounted in the circumferential direction is another design feature. If two plates or printing plates can be mounted in the circumferential direction, it is possible to print the same page twice in one revolution, which is called double production. But it is also possible to print two different pages, which is referred to as collective production. These two features determine - with other features, which are less relevant in connection with the present invention - the configuration and thus the production possibilities of a printing unit, or a printing tower. Typical configurations are 4x1, 4x2 and 6x2. It is possible one Paper web to print, which does not have the maximum printing unit width, but only example, 3/4, 1/2, 1/4, 5/6, 4/6, 3/6, 2/6 or 1/6 of the maximum width.
• the fixed section length corresponds to the cylinder circumference, or half the circumference of the cylinder.
• the fastening elements for fixing the printing plates on the plate cylinder must be made as space-saving as possible.
• the printing plates are usually bent at the opposite ends, ie provided with a Abbug. The angled relative to the printing surface of the printing plate section or leg is understood as Abbug.
• a plate cylinder has fasteners to fix printing plates on its surface. Fastening elements are for example parallel to the cylinder axis, located on the surface clamping or clamping devices.
• a fastener may be a recess with an acute-angled edge. It can be used for fixing the front Abbugs (based on the direction of rotation of the plate cylinder) and the rear Abbugs the pressure plate differently acting fasteners. It is possible, for example, that the turning with the printing surface of the printing plate forms an acute angle ( ⁇ 90 °). In this case, a recess with an acute-angled edge, in which the front edge of the pressure plate is hung, be used as a fastener. A fixation of the pressure plate can then be achieved, for example, by the pressure plate is tensioned at its rear end. It is also possible for the front or rear end of a printing plate terminals to be used as fasteners. For lateral alignment of the printing plates on the plate cylinder pins and side stops can be used. The pressure plates may have at the bent ends, in particular the turn, recesses, which ensure in cooperation with the stops precise lateral positioning of the printing plates on the plate cylinder.
• Post-published EP 2 338 683 A1 discloses a method and a device for separating a single printing plate from a plate bundle. One end of the pressure plate to be separated is sucked by a suction device and lifted by a pivoting movement of the plate bundle.
• DE 103 14 344 B3 discloses an apparatus for storing an elevator to be fed to a cylinder of a printing machine, in which several elevators to be fed to the cylinder are stored side by side in the axial direction of the cylinder and the elevators are arranged in at least two different levels in the shaft.
• DE 10 2004 042 268 A1 describes a method for feeding a printing plate provided in a disk magazine.
• the disk magazine is positioned in such a way to the plate cylinder, that the pressure plate can be guided to a clamping device located on the plate cylinder.
• the disk magazine can accommodate only a single printing plate, so that after feeding the printing plate to the plate cylinder, the disk magazine must be re-equipped.
• DE 3 940 795 A1 discloses a method for automatically feeding or discharging a printing plate.
• the pressure plate is placed in a storage chamber, the plate cylinder suitably rotated, fed the pressure plate by means of transport rollers and by means of a pressure roller of a clamping device of the plate cylinder.
• the disadvantage is that the storage chamber can accommodate only a printing plate, which is adjusted by an operator.
• EP 435 410 B2 discloses an apparatus for replacing a printing plate in a printing press, in which a plurality of new and a plurality of old printing plates can be stacked and held in a cassette.
• the disadvantage is that the order of the disks to be placed is determined by the stacking order. In addition, obviously plates are used, which are bent only on one side.
• the utility model DE 20 2006 019 943 Ul discloses a device for printing plates, in which a plurality of printing plates are stored individually in cassettes. The Cartridges are moved together by a conveyor to achieve each removal positions for the individual printing plates.
• DE 10 2004 022 089 AI discloses a printing plate cassette with an old and a new book with closable openings on the top or bottom through which a new printing plate can be inserted into the cassette, the new printing plate can be fed to the forme cylinder, an old printing plate can be guided from the forme cylinder in the cassette and can be removed from the cassette by an operator.
• the disadvantage is that only a new panel and an old panel of the cassette can be fed, removed and stored.
• a printing machine which is equipped with such cassettes requires a cassette for each printing point.
• Another disadvantage is the high mechanical complexity and the deterioration of accessibility to the plate cylinder.
• EP 1 987 954 A2 discloses a method of handling printing plates in which each printing plate is coded, each printing plate is placed in a cassette which can hold a plurality of printing plates, the code of each printing plate is read out, and it is checked whether the printing plate itself is located on the correct cartridge and then released for the printing plate a defined recording position in the cassette.
• a disadvantage of the method is the design effort for the cassettes, which requires the possibility of release or non-release certain recording positions.
• a further disadvantage is that the coding of each pressure plate to be introduced into the cassette has to be read out.
• DE 4 408 025 AI discloses a printing unit. In the printing unit each form cylinder is associated with a printing plate changing device.
• MAN Roland Druckmaschinen AG introduces a system for automatic plate change. They are in magazines Side by side positioned printing plates are guided by a 4-axis robot arm to the printing cylinder and then fixed by means of a plate positioning mechanism on the plate cylinder.
• a disadvantage of the method is the high technical and safety effort. In addition, the effort to provide the printing plates in the corresponding magazines.
• DE 3 630 876 A1 discloses a process control system for a newspaper printing press.
• the publication describes a printing plate transport system and a controller.
• the printing plates are individually identified and transported by a transport system to the appropriate printing units.
• the automatic transport of individual plates requires a variety of devices and is very expensive.
• DE 10 2006 032 203 A1 discloses a feeding device for feeding printing plates to a plate cylinder.
• the printing plates are provided in magazines which have several layers for receiving printing plates.
• a disadvantage is the high mechanical complexity and the requirement that the supply of the printing plates to the individual magazines and layers of the device by an operator.
• DE 10 2004 023 434 A1 discloses a method for changing a printing forme in which the assembly or disassembly of a printing form takes place using a suction device.
• a disadvantage of the method is that a manual hooking a page of the printing form is required.
• DE 10 2005 042 756 A1 discloses a method for changing printing plates.
• printing plates are automatically on a printing form cylinder assembled.
• the disadvantage is the requirement of at least one memory location for each disk position.
• the supply of the printing forme to printing forme cylinder by pushing from the rear edge of the printing form.
• the position accuracy is reduced during assembly, or the effort for positionally accurate mounting increases.
• the object is achieved by the device according to claim 1 and the method according to claim 10.
• the basic idea of the invention is in many cases to provide not only a single plate on a printing unit, but a package or bundle of printing plates.
• a package or bundles of printing plates is referred to as a plate bundle.
• the invention is based on a printing plate separating device, which is designed such that a printing plate to be separated is separable from a plate bundle.
• the printing plate separating device comprises a Plattenbündelaufiiahme, by means of a plate bundle is receivable.
• the Plattenbündeletziiahme is preferably arranged on the printing unit, for which the printing plates of the plate bundle are provided.
• the plate bundle is provided in particular at the printing unit for which the printing plates of the plate bundle are provided.
• the plate bundle is preferably stored substantially vertically on or in the plate bundle receptacle.
• a plate bundle may consist of several, ie at least two superimposed or stacked printing plates. Adjacent printing plates of the plate bundle can abut each other.
• the advantage of a plate bundle is that the plate bundle as such and not each of the printing plates of the plate bundle individually to eg the desired Printing unit must be transported.
• the fact that not individual printing plates but plate bundles are transported between the plate making or the plate storage and the printing unit, reduces the number of transport operations, thereby reducing the risk of errors and process reliability is increased.
• a plate bundle has a higher mechanical rigidity compared with a single pressure plate, thereby reducing the risk of damage during transport.
• plate bundles in the field of plate production can be automatic or manual. It is also possible to form a plate bundle, if not all plates have been produced, which are necessary for a change. It is later possible to add the missing plates to the package, or to transport missing plates either individually or as a package to the appropriate printing unit.
• the printing plates can be non-positively, frictionally and / or positively connected, in particular jammed, nested, pressed or wedged.
• a pressure plate may at least partially surround or border at least one other pressure plate.
• a pressure plate is normally a plate-shaped, flexurally elastic body.
• the pressure plate In the longitudinal direction, ie in the rotational direction of the cylinder on which the pressure plate is arranged, the pressure plate has a leading or front end and a trailing or rear end, between which a central partial or a pressure region of the pressure plate is arranged.
• the printing plate is bevelled at the leading and trailing ends, ie provided with bends, which are folded relative to the printing area or the middle part, in particular on the same side. As a result, the respective turn can be introduced into a channel of a plate cylinder in order to fix the printing plate to the plate cylinder.
• the bends are angled at an angle between 75 ° and 105 ° with respect to the pressure range of the printing plate in the uninstalled state. Particularly preferred is the angle between 85 ° and 95 ° or 90 °.
• the printing plates are connected only in the area of the bends and separated from each other in the area between the bends, that is not connected.
• the printing plates are arranged one above the other, in particular into one another or one on top of the other, so that the bends of one printing plate are connected, jammed, nested, pressed or wedged or can be wedged with the bends of another printing plate.
• the bends of a pressure plate surround an inner, adjacent pressure plate.
• the bends of the inner pressure plate are applied to the bends of the surrounding pressure plate.
• the bends of one pressure plate surround the bends of the other, inner pressure plate.
• This type of connection of the printing plates can be done by simply pressing the printing plates together by means of a mechanical force.
• two, three or more printing plates are connected simultaneously or successively in this way.
• the combined into a plate bundle printing plates are preferably the same length or / and have an equal distance between their front and back Abbug on.
• the length of the pressure plate is greater than the distance between the turns.
• the printing plate separating device further comprises a gripping device movable relative to the plate bundle receptacle, by means of which a single printing plate of the plate bundle is graspable and detachable or separable from the plate bundle, in particular from the adjacent printing plate.
• the gripping device is designed so that they grip the pressure plate to be separated and relative to the other pressure plates of the plate bundle, that is movable relative to the plate bundle.
• the gripping device are Gripping device and pressure plate relative to each other fixed, so that the pressure plate participates the movement of the gripping device.
• the gripping device can, for. B. have a magnet or a pair of pliers, with which the pressure plate to be separated in particular force and / or form fit is tangible. It is particularly preferred that the gripping device comprises or is a suction device. Under a suction device z. B. a suction cup, which is able to suck or to capture the pressure plate to be separated, in particular by means of negative pressure.
• the gripping device is preferably designed such that it can grip the front or the rear end of the printing plate to be separated.
• the pressure plate to be separated z. B. be taken on the leading turn or on the trailing Abbug or in the middle part between the turns.
• the gripping device can be arranged on a transport device or have a transport device.
• the transport device is designed such that it can lead the gripping device to the printing plate to be separated and singulate the printing plate to be separated from the plate bundle.
• the transport device may also be intended to transport the separated printing plate to the plate cylinder for which the printing plate is provided.
• the printing plate can be moved or transported by the transport device, for example, to a transfer position in which the printing plate is attachable to the plate cylinder or taken for further transport to the plate cylinder by another transport device and transported to the desired plate cylinder.
• the transport device may, for. Example, an arm or a traverse, which is mounted on a machine frame, so that they can separate the pressure plate from the plate bundle and preferably transport in the direction of plate cylinder.
• connections between the printing plates of the plate bundle are detachable, so that a single printing plate can be separated from the plate bundle, ie removed from the combined printing plates, detached or pulled out. If several plates are combined, one, two or more plates can be used be solved in succession or singulated. In a singulation process, the connection can be solved by pulling out, bending or pushing out.
• Separation of a pressure plate is understood to be at least the release of the connection between the pressure plate to be separated and the plate bundle.
• the separation also means the lifting of the printing plate to be separated from the plate bundle.
• the lifting preferably takes place by means of a movement of the gripping device transversely or perpendicular to the plane of the plate or the middle part or the pressure region arranged between the bends.
• the gripping device in particular also the transport device when the printing plate to be separated is transported away from the plate bundle in particular in the direction of plate cylinder.
• the gripping device is mounted in particular by means of the transport device so that the pressure plate to be separated with at least one, preferably at least two rectilinear, ie linear movements of the gripping device of the plate bundle is singular or at least detachable.
• the movements are directed in different directions.
• the straight-line movements in contrast to pivotal movements have the advantage that they can be implemented mechanically in a simple manner and can separate the printing plates to be separated with only slight bending stresses.
• the gripping device for separating, in particular for releasing the connection of the pressure plate of the plate bundle along the central part, in particular the plate plane of the printing plate be movable.
• the plate plane is understood to be the part of the printing plate understood between the bends, ie the middle part or the printing area. Although a plate plane is mentioned, it may, as described herein, be curved in the plate bundle. Therefore, a plate plane is not necessarily a flat surface but also a curved surface.
• the gripping device is moved in particular so that the one turn, such as the leading Abbug, the pressure plate to be separated when loosening the connection in the direction of the other turn, such as the trailing Abbug which is moved to be separated printing plate.
• the one turn such as the leading Abbug
• the pressure plate to be separated when loosening the connection in the direction of the other turn, such as the trailing Abbug which is moved to be separated printing plate.
• a very small path from because only the preferred frictional or positive connection between the Abbugung to be separated pressure plate and applied to this Abbug must be solved the next adjacent pressure plate of the plate bundle. Since the middle part of the pressure plate is very thin, this is only minimally bulged during the movement to release
• the gripping device After releasing the connection of the printing plate with the plate bundle, the gripping device can be moved transversely, in particular perpendicular to the plane of the plate for lifting the printing plate from its adjacent printing plate.
• the movement of the gripping device is for lifting the pressure plate in particular transversely or perpendicular to the direction for releasing the connection of the pressure plate with the plate bundle.
• the directions for releasing the connection and for lifting the pressure plate are thus different.
• the gripping device can perform a movement for removing the printing plate from the plate bundle.
• This movement like the movement for releasing the pressure plate and the movement for lifting the pressure plate, may be linear and / or pointing in a different direction.
• the gripping device for removing the printing plate from the plate bundle along the plane of the plate and / or opposite and preferably parallel to the direction for releasing the connection of the pressure plate with the plate bundle movable.
• the gripping device is thus preferably also transversely, in particular perpendicular to the direction in which the lifting of the printing plate is movable for the removal of the printing plate.
• the plate to be separated when gripped by the gripping device, is separated from the plate bundle with at least one, preferably at least two rectilinear or linear movements of the gripping device.
• Movements have in particular in different directions and can each other, such. B. directly follow each other.
• each of the printing plates of the plate bundle has different information.
• the particular advantage of the plate bundle is that in the production of the plate bundle each printing plate can be detected by a data processing system based on their unique identification and assigned to the plate bundle. Thus, which printing plates are contained in the disk pack is stored in the data processing system. In addition, the order of the printing plates of the plate bundle is stored in the data processing system. It is particularly advantageous that the data processing system can identify the plate bundle and the associated printing plates if only the identification of a single one of the printing plates of the plate bundle is predetermined.
• the information of the individual printing plates are arranged so that they are all covered by the stacked printing plates, except for one, in particular those of the outermost printing plate, whereby the plate bundle is identifiable.
• the transport device in particular the arm on which the gripping device is arranged, z. B. be freely movable and due to the movement of one or more actuators, which move the arm to be movable so that the gripping device is moved linearly.
• the gripping device in particular the traverse or the arm, in alternative embodiments, for. B. be arranged by means of linear guides on the machine frame of the printing plate separating device or the printing unit.
• the gripping device can optionally execute a pivoting movement with respect to the transport device or the machine frame, ie be arranged pivotally.
• This pivoting movement is preferably carried out about a pivot axis which is arranged parallel to one of the bending edges of the bends of the pressure plate. This movement can be carried out between the linear movements for the release and the lift-off or between the linear movements for the release and the removal or after or during the removal.
• a plate bundle from which no printing plate has yet been separated consists of an integer multiple of four printing plates or of an integral multiple of six printing plates.
• the or all printing plates of a plate bundle can be provided for equipping the same printing unit. With the or all printing plates of the plate bundle several plate cylinder of the same printing unit or the same plate cylinder can be fitted. Preferably, each printing plate of the plate bundle is assigned a position on a plate cylinder.
• An advantage of the invention is that the printing plates can be summarized and provided in the correct order for equipping the plate cylinder and thus a space-consuming and time-consuming handling of many individual printing plates is avoided.
• the gathering or bundling of the printing plates is due to the nesting or clamping of the printing plates.
• This type of bundling is simple and quick to perform and also inexpensive, since preferably no additional components for holding the printing plates must be used.
• Another advantage of the invention is that an employee can be responsible for several printing presses, since he does not have to insert the printing plates individually in each Druckplattenzu Foodvorraum, but the Druckplattenzu Foodvorraum can provide a plate bundle and the inventive device required printing plates preferably singly and independently from the plate bundle can separate.
• a device comprises sensors for identifying printing plates or plate bundles; Means for transporting the plate bundle; Means for removing individual printing plates from the plate bundle; Means for transporting individual printing plates near the mounting position; and / or means for disassembling and removing printing plates. It preferably comprises a data processing system which has a network and one or more data memories and which can be used as a planning system or as a control system.
• an identification of the plate bundle can be detected. Such identification may be a separate identification added to the disk bundle.
• the identification of at least one pressure plate belonging to the plate bundle is used as identification of the packet.
• the identifications of printing plates which have to be exchanged during a production change are known, so that the information for a printing plate contained in the package is sufficient, without all plate identifications having to be visible. It does not matter which of the plates in a package can be identified.
• a sensor may include, for example, bar code readers, cameras, scanners, electromagnetic sensors or RFID sensors, or a combination thereof.
• the term sensor comprises on the one hand electronic or optoelectronic detectors, but also optionally associated controls and software functions for evaluating the detector signals. It may be advantageous to detect the identification of printing plates at different times or at different locations in order to quickly detect possible errors in the course of handling and to take appropriate measures.
• the sensors used for this purpose can be of different types.
• a sensor can detect the identifications of several or all of the disks belonging to a package. But it is also possible to record the identifications individually. It is also possible to enter the identifications by an operator. In particular, the order of the plates located in a plate bundle is detected as information and stored by the data processing system, in particular in a database.
• the identification is or is advantageously arranged or attached to the turn of a printing plate. It can be applied in connection with the plate exposure. It can also be applied with a separate device, for example a printer. It is also possible to use the printed image itself or parts thereof for identification. It is possible that the identification is permanently connected to the printing plate or is removable. It can be used repeatedly identifiable means for identification, for example, signs or RFID sensors. It is also possible to use multiple identifications.
• plate bundle data The information on the printing plates in a plate bundle is referred to below as plate bundle data.
• Disk bundle data may be more or less extensive, but may also be incomplete if, for example, it does include the information about platens but not their order.
• Disk bundle data can be provided for subsequent operations in a network accessible data store or database. It is also possible to dispense with the storage of disk data to reduce the IT effort, however, the availability of disk data provides advantages in detecting errors that can occur when handling printing plates.
• Plate bundle data may also include other, for example, production-related or machine-related data, for example the mounting positions of the plates belonging to the plate bundle, image data of the printing plates, parameters for presetting of printing units, product names, production time, or others Information. But it is also possible to provide such information in separate data stores or databases.
• the identification can also be referred to as information carrier, which can be of several parts and can be attached to one of the printing plates, in particular to the uppermost and / or lowermost printing plate, of the plate bundle.
• the innermost printing plate may, for example, be the one that can be singled out of the plate bundle first and the outermost printing plate, after the separation of the other printing plates from the plate bundle, may be the last printing plate contained in the plate bundle.
• a single information carrier is attached to the plate bundle to facilitate and / or facilitate the process of acquiring the information.
• the information carrier may be a linear bar code, a stacked bar code, a 2D code or the like.
• An RFID unit for storing information can also serve as an information carrier.
• the information carrier force, friction, form and / or cohesively connected to the pressure plate.
• the information carrier is glued to the printing plate, clamped or integrated into the printing plate.
• the information carrier is mounted in such a way that slipping or accidental removal of the information carrier is not possible.
• the information carrier has a redundant code or a system for error correction, so that despite slight contamination or damage to the information carrier, the information can be read out of the information carrier, such as in a 2D code.
• the information carrier can be mounted on the top and / or bottom of the printing plate, the edge region is preferred in this regard. It is conceivable that a plurality of information carriers are attached to one and / or more or each pressure plate in the plate bundle.
• the information carrier may be attached to or integrated into the bearing means of the plate bundle. It is advantageous if the information carrier for a scanning device or read-out device is easily accessible, so that the scanning process can be carried out quickly and without time-consuming handling of the printing plates or the plate bundle.
• the information carrier may contain information about the position of the printing plate on the plate cylinder, about the order of the printing plates, about the format to be printed and about the characterization of the plate bundle in the form of, for example, numbering contain.
• the information carrier may comprise information specifying which plate cylinder (s) should be equipped with the plates located in the plate bundle (s) and at which position on the respective plate cylinder, the printing plate is to be arranged.
• the information carrier can be detected and / or read out by means of a scanning device in order to forward the obtained information, for example, to an evaluation or control unit.
• the scanning device may be a mobile hand-held scanner, an image processing device such as a camera, or a fixed scan unit, such as a robotic arm with a scanning device.
• the scanning device may be disposed on a device for feeding the printing plate to a plate cylinder or to the plate cylinder itself.
• the scanning device has a display or the scanning device is connected to a display on which the scanned information is visualized.
• a plate bundle transported to the printing unit is provided on or in a plate bundle receptacle.
• the plate bundle receptacle can accommodate one or more plate bundles. From a printing unit dismantled printing plates can be included in a disassembly memory. It is possible to use the plate bundle receptacle as a disassembly storage, it is also possible to provide a separate disassembly storage from the plate bundle receptacle.
• the printing plate separating device may be a mounting device and comprise one or more sensors which can read the identification of the disk bundles located in the disk bundle receptacle.
• the mounting device can via one or more sensors, which can read the identification of an isolated from the plate bundle pressure plate. It is advantageous if the same sensors can be used to identify a plate bundle and to identify the separated printing plates. If the order of the printing plates contained in a plate bundle is known, identification of the separated printing plates can be dispensed with. However, it may also be advantageous to provide an identification of the individual printing plates in order to obtain increased error safety through this additional test. It is also advantageous if the sensors can also be used for the identification of printing plates, which are mounted by an operator.
• the mounting device has a controller that controls the mechanical processes.
• the controller is networked with higher-level systems for production control, for example, to exchange identification information about plate bundles and printing plates as well as status messages and to trigger production changes automatically.
• the mounting device has a control station arranged in its vicinity, with which an operator can trigger, for example, individual functions or functional sequences or read or input status information.
• the mounting device preferably comprises mechanical actuators for the following method steps:
• Disassembly of the printing plate, which must be replaced, the disassembled printing plates can be collected at a defined position in a disassembly memory.
• Step 2 If you need to change several plates, repeat steps 2 through 5. If all plates of a plate bundle have been assembled but not all plates required for the production change have been mounted, steps 1 to 5 are repeated. Step 3 may be omitted if the order of the printing plates contained in a plate bundle is known. It is also possible, for example, to partially or completely carry out the disassembly of the printing plates to be replaced.
• the process can be automatically reported and the printing unit marked as "ready for printing.” If a plate bundle or plate removed from the plate bundle is identified as being misidentified If the plate bundle does not contain all of the plates required for the production change, for example, the misrecognized plate can be transported to the disassembly store and an error message can be raised, which then requires an intervention to correct the error For example, an operator may hand over a missing printing plate to the mounting device, or manually perform the assembly and trigger an acknowledgment message to mark the printing unit as It is also possible, for example, for the missing printing plates to be brought into the plate bundle receptacle individually or as a plate bundle and for the automatic assembly of the subsequently supplied printing plates to be started manually or automatically.
• the plate bundle receptacle comprises one or more containers which can receive plates or plate bundles. It is possible for a container to contain a plurality of plate bundles.
• a container of the plate bundle receptacle may have a fixed position.
• the plate bundle receptacle may also include a positioning device, with which the containers can be brought into different positions. It is also possible that a container can be detached from the plate bundle receiver and used to transport plate bundles between plate making and printing unit.
• a container can accommodate a plurality of plate bundles.
• a positioning device of the plate bundle receptacle can bring a container into a first position - the loading position - in which plate bundles are introduced into the container.
• the loading can be done by an automatic device which, for example, also carries out the transport of the plate bundles from the plate production to the printing unit.
• the loading can also be done by an operator.
• a container can then be brought to a second position - the mounting position - which allows the removal of printing plates by the automatic mounting device.
• the order of plate bundles which are loaded into the mounting memory is adapted to the production sequence, that is, the plate bundle required for the next production change is, for example, in the front position in the plate bundle receptacle to facilitate the singulation and assembly of the plate bundle To allow in the plate bundle pressure plates. After all the plates of one plate bundle have been mounted, the next plate bundle is in the foremost position in the plate bundle holder. But it is also possible to make the mounting device so that the order with which different plate bundles in one Plattenbündelage present is irrelevant.
• the mounting device in this case is designed so that it can identify all located in a plate bundle recording plate bundle and that it can make a separation of plates from any plate bundles.
• the mounting device separates a plate from a plate bundle located in the plate bundle receptacle and identifies it.
• a gripping device In order to carry out the separation of the plates, it has a gripping device. These may be, for example, grippers or preferably one or more individually controllable suction cups.
• the gripping device moves for the singulation process preferably in a plane perpendicular to the turn.
• the plates are positioned in the plate bundle receptacle such that the baffles are parallel to the cylinder axis of the plate cylinder.
• the mounting device moves the printing plate out of the plate bundle receptacle into a first intermediate position, the identification position. In this position, an identification of the separated printing plate takes place.
• a shift of the isolated and correctly identified pressure plate in a mounting position of the printing plate For this purpose, a movement of the pressure plate on the one hand parallel to the axis of the plate cylinder, so that the plate reaches the desired axial position with respect to the plate cylinder, which corresponds to the pressure zone in which the plate is to be mounted.
• the pressure plate is moved in a plane perpendicular to the cylinder axis. It is possible to pass the plate to other holding or transport elements, as were used for the singulation process, but it is also possible to use the same gripping element, as for the singulation process.
• the plate cylinder is moved so that the plate fasteners are in a defined position with respect to angle of rotation and lateral position, the mounting position of the plate cylinder.
• the movement of the plate cylinder may be a rotational movement or a movement along the cylinder axis, it may be carried out as soon as the control of the printing unit has received the information on the position of the mounting plate.
• a slider is used.
• the slider can exert a force on the pressure plate by sliding it from the bottom of the plate against one of the bends, in particular against the front in the transport direction Abbug presses. He can also hold a pressure plate in the middle. It is moved in a plane perpendicular to the fold of the plate and transports the pressure plate from the identification position to the mounting position.
• the sliding of the plate by means of a slide located under the plate and acting on the front edge of the plate has the advantage that a high positioning accuracy of the flexible pressure plate is achieved.
• the slider may have additional positioning elements, such as pins, for precise lateral positioning of the printing plate.
• the plate is pushed against a stop located above the plate fastening elements, for example a strip, in order to improve the alignment of the pressure plate with respect to the fastening elements and their position in the circumferential direction of the plate cylinder.
• a device for handling at least one printing plate, which device may be considered as an automatic feeding device or automatic machine for feeding printing plates to a plate cylinder and comprising the separating device described herein.
• This device is intended to separate at least one printing plate from the plate bundle and to guide the printing plate to a plate cylinder and to position or center on the plate cylinder so that a Nachpositionieren is no longer required. This process is preferably carried out until the printing plates of the plate bundle are used up.
• This handling device comprises the singulation device described herein.
• the handling device has a slide, which can be multi-part and advantageously may have a centering pin.
• the slider and / or the Centering pin can / can be connected form, - friction and / or non-positively connected to the pressure plate or be.
• the slider is arranged with the centering pin at one of the two or both folded ends of the pressure plate and / or connected.
• a different position of the slider is not excluded.
• the deflection of the pressure plate has a groove, opening or opening into which the centering pin of the slider can be inserted, in particular with little play or clearance.
• the slider can be arranged centrally in the longitudinal direction of the pressure plate.
• the handling device may also include two or more slides for guiding the printing plate. Another type of connection between the slider and the pressure plate, such as by means of clamping device or magnets, is also possible.
• the handling device has a positioning device, which can be multi-part and which helps to position the printing plate on the plate cylinder.
• the positioning can be positioned or arranged in the vicinity of the plate cylinder or, in particular such that the positioning device is arranged above a channel on the plate cylinder for inserting or suspending a Abbugt a pressure plate, but preferably does not touch the plate cylinder.
• the positioning device advantageously has at least one recess which is suitable for receiving the slider and / or the centering pin and enables the exact positioning and / or centering of the slider, in particular laterally, and thus the pressure plate carried by the slider relative to the positioning device.
• other embodiments for positioning the slider are also possible.
• the recess can be aligned prior to insertion of the centering with the aid of a doctrine or a register cam, in particular laterally, so that after the insertion of the centering of the slide into the recess no repositioning of the slide and the pressure plate relative to the positioning and thus with respect to the plate cylinder more must take place.
• the pressure plate is preferably located on a stop on the positioning, which is arranged transversely to the recess and parallel to a channel of the plate cylinder.
• the stopper is provided, for example, for the axial positioning of the printing plate relative to the plate cylinder.
• the slider After positioning the slider with the pressure plate on the positioning device, the slider can be removed, wherein the pressure plate can still be held in position by the holding device.
• the properly positioned pressure plate By a jig, the properly positioned pressure plate, the turn of which rests against the stop of the positioning and is located above the channel of the plate cylinder, are suspended or pushed into the channel.
• a cam can perform the indenting process, but other possibilities are not excluded.
• a fixing device can fix the deflection of the pressure plate in the channel of the plate cylinder. After a rotation of the plate cylinder, the other loose Abbug the pressure plate in a corresponding channel of the plate cylinder can also be hung and fixed in order to then perform the printing process can.
• the used printing plate can be released from the channel of the plate cylinder by means of a Ausspannvorrichung or stretched out.
• the pressure plate is transported after unclamping via a conveyor belt to a disposal basket.
• the band is pivotally mounted and / or displaceable, so that it is able to take the stretched pressure plate at any point and transport it to the disposal basket without damaging or jeopardizing other devices.
• the tape can serve as access protection so that people can not be injured when changing the printing plate.
• the handling device can have, in addition to the devices already mentioned, other devices which can assist in loosening, holding, guiding, positioning, centering, fastening, clamping and / or unclamping the pressure plate (s).
• a slider in particular with a centering pin, can be attached to or connected to the detached printing plate and guide the printing plate to the plate cylinder and / or into the vicinity of a channel of the plate cylinder.
• the centering pin of the slide in an opening or a breakthrough on a the bends of the pressure plate are inserted or hooked.
• the pressure plate follows the movement of the slider.
• a positioning device is positionable on the plate cylinder and is provided for centering the slider and the pressure plate on the plate cylinder.
• the centering pin of the slider can be inserted into a recess of the positioning device, wherein the recess has previously been aligned or adjusted with the aid of a jig or a register cam relative to the plate cylinder, in particular laterally or laterally.
• the slider can be removed, wherein the holding device keeps the pressure plate in position.
• Adjacent to the positioning device is the pressure plate or the Abbugug the pressure plate over the channel of the plate cylinder.
• the Abbug the pressure plate can be hung in the channel of the plate cylinder and then fixed in the channel.
• a fold, a bent end, a beveled end or a beveled surface of a printing plate are used in this description as synonyms for a Abbug, unless the context indicates otherwise.
• Figure 1 is a side view of unilaterally summarized printing plates with a measuring or scanning device for determining the number of printing plates;
• Figure 2 is a side view of a printing plate bundle with one side summarized printing plates with force application point and two stops for nesting the printing plates;
• Figure 3 is a side view of a plate bundle with fully consolidated printing plates
• Figure 4 is a plate bundle receptacle holding one of two plate bundles; a printing plate separating device upon sucking a printing plate of the plate bundle to be separated;
• the printing plate separating device before separating the printing plate to be separated from a plate bundle, wherein the linear movements of a gripping device for separating the printing plate are shown as arrows;
• the printing plate separating device during or after separating the individual printing plate from the plate bundle
• FIG. 22 shows the impressions of the deflection of the pressure plate into the channel of FIG
• Figure 24 shows a second embodiment for the removal of used
• Figure 25 shows a third embodiment for the removal of used
• Figure 26a shows a second embodiment for separating a printing plate from a plate bundle
• FIG. 26b shows the separation process of the printing plate to be separated according to the exemplary embodiment shown in FIG. 26a, wherein the movements for separating the printing plate are shown as arrows;
• Figure 27a shows a second embodiment of the impressions of a Abbug a
• Figure 27b shows the lifting of the pressure plate to remove a slider according to the embodiment shown in Figure 27a;
• FIG. 27c shows the impressions of the deflection of the pressure plate into a channel of the
• Plate cylinder according to the embodiment shown in Figure 27a; Figure 28a to 28c, the formation of a plate bundle of printing plates and the detection of an information carrier or an identification by means of a
• Figure 29a to 29c a sequence of an assembly process on a printing unit, wherein
• Pressure plates are arranged on a plate cylinder.
• Figure 1 shows a plurality of pressure plates 10, which are folded both at the left end 10a and at the right end 10b of the pressure plates 10 shown in Figure 1, and thus each have a turn, wherein the beveled ends 10a and 10b protrude in the same direction.
• the folded left ends 10a of the printing plates 10 are combined and the folded opposite ends 10b of the printing plates 10 are loosely on each other.
• a scanner 11 is able to scan the combined printing plates 10 in order to calculate the number of printing plates in order to check whether the desired number of printing plates 10 is present.
• the scanner 11 is stationary in this case.
• the right-hand end of the printing plates 10 shown in FIG. 1 is guided past the scanner 11 by means of a mechanical pressure force which is exerted on the printing plates via the force introduction point 12.
• the scanner 11 detects and calculates the number of printing plates.
• the already summarized end of the printing plates 10 can be held by a holding device.
• the scanner 11 can detect an information carrier 10c adhered to the folded end 10b of the uppermost printing plate 10 in the form of a bar code.
• the information carrier 10c includes information about the printing plates and the destination of the respective printing plate.
• Figure 2 shows one-sided nested pressure plates 10 and two holding points 13, which are arranged in the vicinity of the folded ends 10a, 10b of the uppermost pressure plate 10. Via a force introduction point 12, a pressure force is exerted on the lowermost pressure plate 10, so that the pressure plates are pressed against the holding points 13.
• the folded ends 10b of the printing plates 10 are nested in one another analogous to the folded ends 10a.
• FIG. 3 shows the printing plates 10 combined or bundled into a plate bundle 14.
• FIG. 4 shows a plate bundle receptacle 22 in which two plate bundles 14 are located.
• FIG. 4 further shows a plate bundle holding device 20, which has pulled one of the two plate bundles 14 to the edge of the plate bundle receptacle and holds the plate bundle 14 in this position.
• a gripping device 23 detects with the suction cup 24 the upper bent end 10b of the printing plate 10 of the plate bundle 14 to be singulated or released, as shown in FIG.
• the gripping device is brought by means of a linear movement perpendicular to the middle part between bevelled ends of the pressure plate 10 to the pressure plate 10.
• FIG. 6 shows that the several movements directed in different directions, which the gripping device carries out for separating the pressure plate 10 to be separated.
• the frictional connection between the folded end 10 b of the separating pressure plate 10 and the folded end of the adjacent pressure plate by the pressure plate 10 taking gripping device 23 along the middle part of the pressure plate 10 is moved.
• the pressure plate 10 is lifted from its adjacent pressure plate and thus from its plate bundle with a movement of the gripping device 23 perpendicular to the movement for releasing or perpendicular to the middle part of the printing plate.
• the gripping device 23 for the removal of the pressure plate 10 is moved parallel to the direction to release, but opposite thereto. The pressure plate 10 is thus isolated.
• the upper part of the pressure plate 10 can be bent for transport to the plate cylinder by the gripping device 23 are pivoted about a pivot axis parallel to the fold 10b.
• the folded end of the plate cylinder 30 ( Figure 8) or a transfer or intermediate position is fed in the correct position.
• FIG. 8 shows the feeding of the separated printing plate 10 with the aid of the gripping device 23 to the plate cylinder 30.
• the remaining part of the printing plate 10 which may still be located in the plate bundle receptacle 22, can be pulled out of it.
• Figures 9 to 11 show the guiding or positioning of the printing plate 10 on the plate cylinder 30 by means of the gripping device 23 and a holding device 25.
• the pressure plate 10 is thereby in a transfer or intermediate position.
• the holding device 25 is a so-called inverted air cushion 25, which can hold the pressure plate 10 by means of negative pressure.
• Figures 12 and 13 show the positioning of a slider 26 at the beveled end 10b of the pressure plate 10.
• the slider 26 is provided for feeding the pressure plate 10 to the plate cylinder 30 and to a positioning device 40 disposed on the plate cylinder 30.
• the pressure plate 10 has at the beveled end 10b an opening lOd into which a centering pin 27 of the slider 26 is inserted, as shown in FIG 14 is shown.
• the holding device 25 keeps the pressure plate 10 in position.
• a plan view of the inserted centering pin 27 of the slider 26 in the opening 10d of the pressure plate 10 can be seen in FIG.
• FIG. 16 shows how the pressure plate 10 is guided to the plate cylinder 30 by means of the slider 26.
• a channel 31 of the plate cylinder 30 is provided to receive the folded end 10 b of the printing plate 10.
• the positioning device 40 has a recess 41 for the centering pin 27 of the slider 26.
• the slider 26 with the centering pin 27 the pressure plate 10 to the positioning device 40, wherein the centering pin 27 is inserted into the recess 41.
• the pressure plate 10 is laterally aligned with the plate cylinder 30.
• the positioning device 40 has a stop 42, which is arranged parallel to the channel 31 of the plate cylinder 30 and the printing plate 10 axially aligns with the positioning device 40 and on the plate cylinder 30.
• FIG. 19 shows the lateral adjustment of the positioning device 40 with the aid of a jig 43 and a register cam 40, wherein the jig 43 is inserted into the recess 41 and aligned in accordance with the register cam 40.
• Figures 20 to 22 show a clamping operation, which hangs the beveled end 10 b of the pressure plate 10 on the channel 31 of the plate cylinder 30.
• the bent end 10 b is located after positioning the pressure plate 10 by means of slider 26 on the positioning device 40 above the channel 31 of the plate cylinder 30 and abutment with the positioning device 40.
• the slider 26 is from the recess 41 of the positioning device 40 and the opening lOd the Pressure plate 10 pulled out, wherein the holding device 25 further holds the pressure plate 10 in position.
• the beveled end 10b of the pressure plate 10 can be inserted or suspended in the channel 31 of the plate cylinder 30 and subsequently fixed with a fixing device (not shown).
• FIG 23 shows two superimposed plate cylinder 30, each with a counter-pressure cylinder, which are each suitable for printing a paper web.
• Each Plate cylinder 30 is associated with a plate bundle receptacle comprising two plate bundles 14.
• Each plate cylinder 30 has a jig that unclamps the printing plate 10 after the printing operation.
• a conveyor belt or conveyor belt 53 has two pivot arms 53a and 53b, which are pivotally mounted with respect to an axis Z, in particular horizontally.
• the conveyor belt corresponds in principle to a conveyor belt which is driven by a motor M.
• the pivot arm 53b is capable of receiving the used, stretched pressure plates 10 from the plate cylinders 30. If necessary, the Schenkarm 53b must be pivoted to accommodate the used pressure plate 10 can. Subsequently, the swivel arm 53b transports the used printing plates 10 via the swivel arm 53a to a disposal basket 50 into which the printing plates 10 slide.
• Figure 24 shows a second embodiment of the disposal of printing plates 10.
• the device described in Figure 23 with two plate cylinders 30 and an associated conveyor belt 53 is present in duplicate in the second embodiment and arranged one above the other.
• the two conveyor belts 53 are each capable of transporting away the used printing plates 10 of the plate cylinders 30, analogously to the device described in FIG.
• the essential difference to the embodiment described in Figure 23 is that the used printing plates 10 are transported via the conveyor belt 53 to a hollow column 52, which leads the pressure plates 10 to the disposal basket 50. In this way, used printing plates of a plurality of plate cylinders 30 arranged one above the other can be guided via the hollow column 52 to a disposal basket 50.
• FIG. 25 shows a third exemplary embodiment of the disposal of used printing plates 10, wherein two plate cylinders 30, each having a plate bundle receptacle 22, are arranged analogously to the device described in FIG.
• the conveyor belt 53 has only one pivot arm 53b, which is arranged on a transfer carriage 54.
• the used printing plates 10 are transported via the conveyor belt 53b directly into the disposal basket 50, wherein the disposal basket 50 is arranged on the transfer carriage 54.
• the sliding carriage 54 with the disposal basket 50 can the Personnel simplified access to the plate cylinders 30 and the plate bundle receptacle 22 are made possible.
• FIGs 26a to 26c show a further embodiment for separating the printing plate 10 from a plate bundle receptacle 22 and their transport to the plate cylinder 30.
• Pressure plate 10 is gripped at its lower end 10 a by means of a gripping device 23.
• the folded end 10a of the printing plate 10 to be separated is raised by linearly moving the gripping device 23 grasping the printing plate 10 along the middle part of the printing plate 10.
• the pressure plate 10 is lifted linearly from its adjacent pressure plate and thus from its plate bundle 14 with a movement of the gripping device 23 perpendicular to the movement for lifting or perpendicular to the middle part of the pressure plate 10.
• the lower part of the pressure plate 10 can be bent for transport to the plate cylinder 30 by the gripping device 23 are pivoted about a pivot axis parallel to the fold 10a. As a result, the bent end 10a is fed to the plate cylinder 30 or a transfer or intermediate position in the correct position.
• FIG. 26c shows another embodiment for clamping the pressure plate 10 in the channel 31 of the plate cylinder 30.
• the pressure plate 10 is sucked by a press-fit and suction device 46 and raised. The slider 26 may then be removed from the positioning device 40 because the squeezing and suction device 46 holds the pressure plate 10 in position.
• FIGS. 28a to 28c show an example of the formation of plate bundles 14 consisting of a plurality of printing plates 10.
• three printing plates 10 are combined to form a plate bundle 14. It is possible to form plate bundles 14 from a larger number of printing plates 10, in particular a plate bundle 14 may contain as many printing plates 10 as there are mounting positions on a plate cylinder 30 for which the plate bundle 14 is intended.
• FIG. 28a shows a section of a printing plate 10, on the removal of which there is an information carrier or an identification 10c, which can be detected by a scanner or sensor 11.
• the identification is applied to the bend or the folded surface, for example as an optically recognizable pattern.
• the identification can also be at other locations of the printing plate, for example on the top or the bottom.
• the printed image located on the printing plate or a part thereof can also be used as identification.
• FIG. 28b shows a plate bundle 14 comprising printing plates 10, 15, 16, which are arranged so that a sensor 11 can detect the identifications 10c, 15c, 16c of the printing plates 10.
• the detection of the identifications of the individual printing plates 10 makes it possible to control the printing plates 10 combined in the plate bundle 14.
• the information about the printing plates 10 contained in the plate bundle 14 is stored in a higher-level system and can be called up as needed. This information can also be generated without a corresponding sensor, for example by manual input, by an operator or by an automatic system which monitors the production process of the individual printing plates 10.
• FIG. 28c shows a package 14 of printing plates 10, 15, 16, which are arranged so that a sensor 11 can detect at least one identification 16c of a printing plate 10.
• the arrangement of the printing plates 10 in the plate bundle 14 is such that the baffles are superimposed; This is possible because the flexible printing plates 10 can be compressed, or arched.
• An advantage of this type of plate bundling is the small space required for the plate bundle 14 and the mechanical stabilization of the plates 10 and bends. Both reduce the risk of damage during transport.
• FIGS. 29a to 29c illustrate the sequence of an assembly process on a printing unit.
• the plate cylinder 30 has juxtaposed pressure zones.
• FIG. 29 a shows a package 14 which is located in a plate bundle space 22 which is assigned to a plate cylinder 30.
• the plate bundle 14 is identified by a sensor 11.
• a slider 26 is located in the region of the plate cylinder 30.
• FIG. 29 b shows a pressure plate 10, which is removed from the plate bundle 14 and transferred to the slide 26.
• FIG. 29 c shows the transport of the pressure plate 10 by means of a slide 26 to a mounting position on the plate cylinder 30.

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• 2011
  • 2011-06-28 WO PCT/EP2011/060830 patent/WO2013000505A1/fr active Application Filing
  • 2011-06-28 EP EP11736305.1A patent/EP2673226A1/fr not_active Withdrawn

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