EP3169519B1 - Printing unit with plate cylinder and plate changing device - Google Patents

Description

The invention relates to a printing unit with a printing form cylinder according to the preamble of claim 1.

Such as B. from the WO 2012/148576 A1 is known to be used in the packaging industry in a device for decoration of each having a cylindrical surface having hollow bodies mostly multiple printing units. Each of these printing units each transfers a printing ink to a blanket commonly used by these printing units. The lateral surface of the respective hollow body is then by a relative movement between the lateral surface of the respective hollow body and the previously colored in particular multicolored blanket, in particular by rolling the lateral surface of the respective hollow body on this blanket, with a z. B. decorated multicolored print motif.

Such a device for printing or decoration of particular each having a preferably cylindrical outer surface having hollow bodies is z. B. used in conjunction with a plant usually having multiple workstations for the production of such hollow body, wherein the printing or the decoration of the hollow body is carried out by a printing process, which is why these hollow bodies can be generally referred to as printed products. In such a system to be printed hollow body in a mass production with z. B. several hundred or even a few thousand pieces per minute, z. B. manufactured between 1,500 and 3,000 pieces per minute. Such hollow body z. B. made of metal, especially steel or aluminum, or made of a plastic. Such hollow body made of metal z. B. used as beverage cans or aerosol cans. Such hollow plastic body z. B. prepared in the form of thermoplastic moldings and z. B. as a cup for packaging z. As used by liquid or pasty foods, especially dairy products or drinks. However, the respective hollow body may also be a round tube body produced either from a plastic or from aluminum, wherein a tube is understood to mean an elongated, firm, but malleable container which is provided for filling with a substance, in particular pasty substance. Tubes made of aluminum are z. B. produced in a Rückwärtsfließpressverfahren. Plastic tubes are z. B. produced by extrusion in each case as seamless tubes. Another type of hollow bodies to be printed in an aforementioned device may be preferably cylindrical containers or vessels made of glass, e.g. As bottles or bottles.

Beverage cans are preferably made of aluminum and are i. d. R. so-called Zweiteildosen, in which a circular bottom together with a preferably straight cylinder jacket each from a single workpiece, d. H. from a so-called Slugs or from a Ronde, d. H. a circular disc, in a forming process, for. Example, in a cold extrusion or in a Zugdruckumformverfahren, preferably by deep drawing, in particular by ironing, to a one-sided open hollow body, d. H. be made to a so-called Rohdose and wherein in a final manufacturing step, a circular cover is placed on the cylinder jacket and airtight connected by beading with the cylinder jacket.

Another type of can tinplate cans. Tinplate is a tinned sheet steel. For the production of tinplate cans, the thickness of the steel sheet z. B. 0.15 mm to 0.49 mm, the thickness of the tin layer z. B. 0.2 microns to 0.8 microns, the tin coating is used for corrosion protection. Tinplate cans are so-called three-part cans. In order to produce the jacket of a tinplate can, a rectangular strip of sheet steel is bent to a preferably straight cylinder jacket, wherein the ends of this bent into a cylinder jacket strip in a butt joint be welded. Subsequently, a circular bottom and a circular cover are placed on the cylinder jacket and the edges are crimped. In order to obtain a higher resistance to indentations for the tinplate box in question, have z. B. all three parts, ie the cylinder jacket, the bottom and the lid preferably a wave profile.

An aerosol can, also referred to as a spray can or spray can, is a metal can for spraying liquids. In an aerosol can, the filled liquid is under pressure, wherein as a propellant for discharging the liquid in question from the respective can z. As propane, butane, dimethyl ether or mixtures thereof or compressed air or nitrogen is used.

The aforementioned WO 2012/148576 A1 describes a device for decorating cans, wherein an arrangement of a plurality of printing units, each with an inking unit for multicolor decoration of a plurality of cans is provided, each of the inking units belonging to one of the printing units each having a color box for providing ink, wherein in each color box each ink fountain roller for receiving the ink from the respective ink fountain is provided, wherein in each inking unit a Farbduktor are provided, wherein the ink fountain each ink from the respective ink fountain roller receives, wherein in a respective inking machine in the following ink ductor roller compactor several iridescent Farbreiberwalzen and a plurality of ink transfer rollers cooperating with at least one of the ink fountain rollers are provided, wherein for each inking unit in each case a plate cylinder is provided with at least one pressure plate, wherein with the respective Plattenzylin for the application of the ink only a single inking roller cooperates.

By the WO 2004/109581 A2 is an apparatus for carrying out a contactless digital printing method, for. B. an inkjet printing process known to round objects, in particular second-dose, without the use of a blanket, if necessary, to print individually, wherein preferably a plurality of print heads are provided, each printing a single ink.

By the DE 10 2006 004 568 A1 a short inking unit for a printing press is known, comprising a printing form cylinder, an inking roller cooperating with the printing form cylinder and an inking roller contacting an inking roller associated with a means for ink supply, wherein at least one leveling roller between the location of the ink supply and the contact gap between the anilox roller and the Ink application roller, based on the direction of rotation of the anilox roller, is arranged, wherein the means for ink supply is formed as a chamber doctor blade.

By the DE 101 60 734 A1 a printing machine is known which comprises at least one printing forme, a dampening unit for moistening the printing forme with a dampening solution, an inking unit for coloring the printing forme with a printing ink and a dehumidifying device with a heating roller (tempering roller) for reducing a proportion of the dampening solution conveyed together with the printing ink , wherein the inking unit is designed as a lifeless short inking unit, wherein a Farbwerkswalze the inking unit has a first Abrollkontaktstelle at which the inking roller with the heating roller in rolling contact, wherein the inking roller has a second Abrollkontaktstelle and wherein a shortest conveying path of the ink from the inking roller to Printing form is specified by at most one intermediate roll.

By the DE 32 32 780 A1 is an inking unit for offset printing machines for printing sheets or webs with a plate cylinder is known which receives the required color of at most two inking rollers with elastic surface, which cooperate with a color cylinder to which the ink is fed via a Farbzuführsystem which produces a continuous color film, wherein the color cylinder a An inking roller with almost the same diameter as the plate cylinder is arranged downstream, wherein the inking cylinder is assigned a dampening unit with at least one dampening agent transferring roller and wherein the transfer of the fountain solution to the inking cylinder in the same direction of rotation takes place after the inking and before the contact point with the inking roller.

By the DE 10 2006 048 286 A1 a method for driving a printing unit with a short inking unit in a processing machine with an anilox roller and an associated doctor device and a subordinate roller of the anilox roller is known, which is arranged downstream of a plate / forme cylinder in the color flow direction, the plate / forme cylinder with a blanket cylinder and the Blanket cylinder is in operative connection with a printing cylinder leading the printing substrate, wherein the anilox roller is driven by a single drive, wherein in the printing / painting of the main drive a drive on a drive wheel of the printing cylinder and a drive wheel of the blanket cylinder and a second and first drive wheel of the plate / Form cylinder and a drive wheel of the inking roller and a drive wheel of the anilox roller is fed, wherein the single drive of the anilox roller is inactive, and wherein in the setup operation, the drive connection to the main drive between the first drive wheel and second Ant riebsrad the plate / forme cylinder is separated, the individual drive of the anilox roller is activated and by means of a single drive a drive torque to the drive wheel of the anilox roller and the drive wheel of the inking roller and the first drive wheel of the plate / forme cylinder is introduced.

By the DE 196 24 440 A1 a device for filling wells of a cylinder of a printing press with a liquid is known, wherein on the cylinder at least two squeegee means for filling wells of the cylinder are arranged with the liquid, wherein a conveying device connected to a conveying device for the liquid and one in the direction of rotation of the cylinder subordinate working doctor blade are provided, wherein the doctor blades are attached to a beam, wherein the abgesakelte liquid is discharged to a collecting trough.

By the DE 89 12 194 U1 is an inking unit for use in a printing press with a viewable on an anilox roll working doctor blade and a paint tray with inking known, the Arbeitsrakelmesser, the ink tray and the means for conveying the color to the anilox roller are combined to form a unit and the unit at one of the printing press mounted carrier is detachably fastened.

By the DE 10 2007 052 761 A1 An anilox printing unit is known, which has an inking roller and an anilox roller as inking rollers, wherein the anilox roller is mounted on pivoting levers, wherein the anilox roller and the inking roller each have bearer rings, one for pressing the bearer rings arranged one on the bearer rings of the other inking roller Device has springs to compensate for manufacturing tolerance caused diameter differences.

By the DE 28 51 426 A1 a device for printing in each case a lateral surface of hollow bodies is known, wherein a to be printed hollow body is provided about a rotation axis transporting transport means, wherein a plurality of printing units are provided, each to be printed hollow body with the transport device in a printing range of at least one of the printing units is transportable wherein at least one of the printing units has a printing form cylinder and an inking unit with a single inking roller.

By the DE 10 2006 032 204 B3 is a method for providing at least one printing plate at its mounting location on a forme cylinder of a rotary printing machine known, wherein the imaged with a print motif printing form is transported with a transport device to its mounting location on the forme cylinder, wherein the printing form is transported with a transport module connected to the transport module, wherein the mounting of the printing forme takes place at its respective mounting location on the forme cylinder from the transport module.

By the DE 10 2005 044 223 A1 is a printing unit of a web-fed rotary printing press, with a form cylinder and rolling on the forme cylinder, wherein seen on the forme cylinder in the axial direction of the same seen several printing plates side by side and in the circumferential direction of the same preferably several printing plates are tensioned one behind the other, and with a forme cylinder associated printing plate changing device to Automatically change printing plates on the forme cylinder, wherein the printing plate changing device along the forme cylinder translationally movable actuator head for releasing and unlocking and locking or locking of printing plates on the forme cylinder and / or along the forme cylinder translatorisch movable exchange cassette to keep new or einwechselnder and Includes old or replaced plates.

By the DE 40 03 445 A1 is an automatic Plattenzuführ- and cylinder loading system for a rotary printing machine with a handling device for removing a printing plate from a container and applying the printing plate on a plate cylinder of the printing unit and for removing a printing plate from a plate cylinder and for storing the printing plate in the container known, the Handling device is guided along a substantially parallel to the axis of rotation of the plate cylinder to be loaded path guide, wherein a carriage for transporting a plurality of printing plates to a printing unit towards or away from one of these printing works is provided and wherein the carriage along a for guiding the handling device substantially vertically running routing is performed.

By the DE 10 2007 035 689 B3 a method for arranging printing plates on a plate cylinder of a printing machine is known, wherein each one of the printing plates is arranged in one of a plurality of axially adjacent the mounting cylinder juxtaposed mounting locations, each of the printing plates before placing them at one of the mounting locations of the forme cylinder in each case at a storage position stored in the axial direction of the forme cylinder next to each other at a fixed distance from each other spaced memory storage device is stored, wherein after arranging a first printing form on the forme cylinder of these form cylinder and / or the storage device are axially displaced so by a travel relative to each other that by this shift another on the forme cylinder to be arranged printing form at one to the mounting location of the previously arranged printing form in a relation to the distance between two adjacent storage positions of the storage unit direction reduced distance adjacent arranged mounting location is arranged on the forme cylinder.

By the DE 196 20 997 C2 a method for axially positioning a printing plate during its application to a cylinder of a rotary printing machine is known, wherein the pressure plate is fed by means of transport to the cylinder, wherein for the application of the pressure plate, a cylinder section is selected, wherein from a plurality of possible, this cylinder section associated, preselected, axially adjacent positions a target position for the pressure plate is selected on the cylinder, wherein subsequently a position of the pressure plate in the axial direction with respect to a cylinder located on the reference position is determined and finally the pressure plate is brought into the preselected desired position.

By the DE 10 2010 001 115 A1 a supply device of at least one printing form of a printing press is known, wherein the supply device has at least one guide element and wherein at least one arranged on a holding means transport container in a respect to a with the at least one At least one printing forme from the at least one transport container out on the at least one forme cylinder is arranged, wherein at least one transport container is designed as a removable magazine and wherein the at least one removable magazine peelable at the at least one holding device is arranged and wherein at each transfer position of the supply device to which a removable magazine can be arranged, at least one other removable magazine can be arranged instead.

By the DE 198 06 579 A1 a method for the exact positioning of an exposed and provided with this image at the same time accurately stamped registration marks pressure plate known, the pressure plate on a horizontal plane in rectangular coordinates (x, y) displaceable and pivotally mounted in this plane mounted alignment table and then by moving the Alignment table according to the detection of the register marks the printing plate is moved to a desired position, are mounted in the punched and optionally bends the printing plate for positionally correct fixing to a pressure roller the image of the printing plate accordingly, the pressure plate in the course of delivery beyond the later defined target position is pushed against the coordinate system (x, y) arranged stops, wherein the pressure plate is then held in this position on the alignment table, wherein the alignment table then by means of pulse manner is moved in the direction of the target position, first in one of the coordinates (x) under detection correspondingly arranged register marks in the course of this Zustellbewegung successful Verschwenkwinkelkorrektur and then in the other coordinate (y) under detection of a correspondingly arranged register mark, which in the course of Stellstellungen the register marks are detected by means of stationary to the punching tools arranged opto-electronic sensing elements, and on the proviso that each of the actuators is moved in the feed direction until the associated scanning the associated register mark indicates as present and after driving over as no longer indicates which Überfahr-distance is stored between this message and display by counting the pulses of a distance-dependent pulse train, whereupon the actuator is stopped and driven in Gegenzustellrichtung until the associated sensing element the register mark now approached from the opposite direction as present reports which Gegenzustellwegstrecke is stored to this message by counting the pulses of a distance-dependent pulse train, which two memory values are subtracted from each other and this difference value is halved and the actuator by the distance corresponding to this pulse number proceed in Gegenzustellrichtung is, so that the switching hysteresis of the sensing element is compensated and adjusts the exact position of the register mark centered to the sensing element, after which the punching durchge leads.

The invention has for its object to provide a printing unit with a printing forme cylinder on which a register-containing printing form change is performed in a simple manner.

The object is achieved by the features of claim 1. The dependent claims relate to advantageous developments and refinements of the solution found.

An embodiment of the invention is illustrated in the drawings and will be described in more detail below. With the invention achievable advantages are mentioned in connection with the embodiment.

Fig. 1

eine Vorrichtung zum Bedrucken bzw. zur Dekoration von jeweils eine Mantelfläche aufweisenden Hohlkörpern;

Fig. 2

ein Farbwerk insbesondere für die in Fig. 1 dargestellte Vorrichtung in einer ersten Betriebsstellung;

Fig. 3

das Farbwerk insbesondere für die in Fig. 1 dargestellte Vorrichtung in einer zweiten Betriebsstellung;

Fig. 4

ein Kammerrakelsystem insbesondere für das in den Fig. 2 und 3 dargestellte Farbwerk;

Fig. 5

einen Plattenwechsler in einer ersten Betriebsstellung;

Fig. 6

den Plattenwechsler der Fig. 5 in einer zweiten Betriebsstellung.

Show it:

Fig. 1

a device for printing or for decoration of each having a lateral surface having hollow bodies;

Fig. 2

an inking in particular for the in Fig. 1 illustrated device in a first operating position;

Fig. 3

the inking especially for the in Fig. 1 illustrated device in a second operating position;

Fig. 4

a chambered doctor blade system especially for in the Fig. 2 and 3 illustrated inking;

Fig. 5

a disc changer in a first operating position;

Fig. 6

the disc changer the Fig. 5 in a second operating position.

The printing in particular of the lateral surface of a hollow body with a z. B. multicolor print motif, ie at least one printed image is carried out in a preferred embodiment in a high-pressure process. Alternative printing methods are z. B. a Screen printing method or an offset printing method or a pressure-formless digital printing method. In the following the invention will be described by way of example in connection with a high pressure process. To execute the high-pressure method, a printing plate is arranged on a lateral surface of a printing form cylinder, in particular a plate cylinder, as the printing form. The printing plate ready for use in the printing process is a printing form with a printing relief, this printing relief reflects the image intended for the printing process mirrored, wherein in a trouble-free printing operation only the printing relief on the transfer of the plate cylinder supplied by the inking ink is involved in the blanket. The printing form or the printing plate has a plate-shaped preferably flexible carrier finite length z. B. from a steel sheet, wherein a particularly flexible pressure body is arranged on this support. At least the opposite in the circumferential direction of the plate cylinder ends of the carrier can, for. B. be bent in accordance with the curvature of the lateral surface of the plate cylinder or be angled to allow easier assembly of the printing plate, ie in this case in particular of the printing plate on the plate cylinder. The support of the printing form or the printing plate has a thickness in the range of z. B. 0.2 mm to 0.3 mm. The printing plate, including its carrier has a total thickness in the range of z. B. 0.7 mm to 1.0 mm, preferably about 0.8 mm. The pressure hull is z. B. formed from a plastic. The pressure hull is used to produce the printing cliché that can be used for the printing process. B. exposed to a print image reproducing negative film, wherein unexposed areas then from the pressure body z. B. be removed by washing or by means of a laser.

A device for printing or for decoration in particular in each case a preferably cylindrical lateral surface having hollow bodies preferably has a plurality, for. B. eight or ten or even more printing units - also called printing stations - on, wherein at least one of these printing units, in the preferred embodiment, all of these printing units each have a rotatable printing plate cylinder, in particular have a printing plate cylinder designed as a plate cylinder. In this case, the printing units or printing stations and optionally also the printing form cylinder are each stored in a frame in this device and can be used in the same printing process to form on the same hollow body a corresponding to the number of participating printing units or printing forme multicolored print motif. The storage of the printing plate cylinder or plate cylinder is preferably each formed as a flying bearing, wherein the respective plate cylinder or plate cylinder at one of its end faces in each case z. B. is mounted on a preferably conical pin. On the lateral surface of each plate cylinder usually only a single printing plate is arranged in each case, wherein the support of the printing plate the circumference of the respective plate cylinder completely or at least for the most part, in particular spans more than 80%. A directed in the circumferential direction of the relevant plate cylinder length of the pressure body of the printing plate is preferably formed shorter than the circumference of the relevant plate cylinder. The printing form or the printing plate is in particular arranged magnetically on the lateral surface of each plate cylinder by means of its support, or at least can be arranged, ie the printing plate or the printing plate is or is preferably held magnetically there, ie by means of a magnetic holding force. In an alternative or additional embodiment variant of the device for printing or for decoration of a preferably cylindrical shell surface having hollow bodies at least one of the printing units or there are also several of these printing units each as a pressure in a digital printing process printing unit formed, wherein such a printing unit in particular has at least one inkjet print head or a laser.

The particular simultaneous transfer of a plurality of printing inks in particular on the lateral surface of the hollow body in question requires that this color transfer takes place in register, in order to achieve a good print quality in the printing process. For a register-containing arrangement of the printing plate or the printing plate on the lateral surface the relevant printing plate cylinder or plate cylinder are in the preferred embodiment on the lateral surface of the respective printing form cylinder or plate cylinder preferably a plurality of z. B. in their respective position each adjustable dowel pins provided, which engage in corresponding formed on the printing plate or on the printing plate recesses and the printing plate or the printing plate thereby at her or his arrangement on the lateral surface of the relevant plate cylinder or plate cylinder there a give defined position. In a preferred embodiment, each plate cylinder or plate cylinder each has a diameter in the range between 100 mm and 150 mm, in particular between 120 mm and 130 mm, wherein an axial length of the respective plate cylinder or plate cylinder in each case z. B. between 200 mm and 250 mm, in particular between 200 mm and 220 mm. The printing plate to be arranged on the lateral surface of the relevant plate cylinder has a width directed in the axial direction of the relevant plate cylinder in the range of 150 mm to 200 mm, preferably approximately 175 mm.

Each of the used in the printing process z. B. formed as a plate cylinder printing plate cylinder transmits with its printing plate or with his printing plate each have a specific ink on a blanket. The printing inks used are usually premixed, especially custom special colors that are tuned in terms of their respective printability in a special way to the material of the hollow body to be printed, depending on whether a surface z. B. of aluminum, a tinplate or a plastic is printed. In a preferred embodiment of a device for printing or for decoration of each z. B. a cylindrical surface having hollow bodies, a printing ink from the printing plate or the printing plate is provided on the lateral surface of the respective hollow body transmitting device. This ink transferring device is z. B. formed as a rotating about a preferably horizontal axis of rotation segment wheel, wherein at the periphery of this segment wheel, that is arranged along its circumference one behind the other preferably several blankets or at least can be arranged. Depending on the printing method used, the ink-transferring device can also be designed as a decoration drum or as a blanket cylinder or as a transfer cylinder as an alternative to the segmented wheel, which are rotatable about a respective axis of rotation at least during printing. The arrangement of the blankets on the circumference of the segment wheel z. B. in that the blankets on the circumference of the segment wheel each z. B. are attached by a cohesive connection, preferably by gluing. The preferably a plurality of printing plate cylinders or plate cylinders are each set radially to the printing blankets arranged on the circumference of the respective segment wheel or at least can be set. In a particularly preferred embodiment of a device for printing or for decoration of a respective z. B. cylindrical surface having hollow bodies is arranged along the circumference of the segment wheel in a row a larger number of blankets, as are each provided to the segment radially radially employed or at least adjustable pressure plate cylinder or plate cylinder. The preferably carousel-like printing ink-transferring device, in particular the segment wheel has a diameter z. B. from 1,500 mm to 1,600 mm, preferably about 1,520 mm to 1,525 mm, and has at z. B. eight associated printing forme cylinders or plate cylinders at its periphery in a row z. B. twelve blankets. The surface of each printing plate is preferably formed with a greater hardness than the hardness of the respective surface of the blankets. The surface of the blankets is preferably flat, that is formed without a profiling. In an operating state in which the printing plate cylinder or plate cylinder involved in the printing process are respectively radially engaged with the blankets of the rotationally driven segment wheel, the respective printing plates of these plate cylinders or the respective printing plates of these plate cylinders roll onto the blankets moved by the segment wheel, wherein the printing plates at least their printing relief each z. B. 0.2 mm to 0.25 mm deep into the respective blanket and thereby in the respective Drucktuck extending in the axial direction of the segment wheel flattening, ie a roll strip produce. An intensity of the flattening is z. B. before or at the beginning of a printing process z. B. by means of a remote control by adjusting a force exerted by the respective printing plate cylinder or plate cylinder on the relevant blanket of the segment wheel contact pressure adjustable or is set.

The example to be printed hollow body, z. B. to be printed Zweiteildosen be z. Example by means of a hollow body to be printed preferably along at least a portion of a circular path, d. H. a circular arc about a rotation axis transporting transport device, preferably by means of a Zuführrades, in particular by means of a Mandrelrades in a continuous movement or in a set clock to at least one of the device for printing each of a lateral surface of hollow bodies belonging printing units introduced and thus in a pressure range of at least transported one of these printing units. For example, the hollow body to be printed by means of z. B. designed as feed wheel transport device to each at least one of z. B. arranged on the segment wheel arranged blankets, or to be printed hollow body by means of this transport device each directly and directly, d. H. without the help of a z. B. as a segment wheel formed ink transferring device transported in the respective printing area of at least one of these printing units, which is the case when the printing unit in question in a direct printing method, z. B. prints in an inkjet printing process.

The like. B. the segment also about a preferably horizontal axis rotating feed wheel or mandrel has concentric with its circumferential line in preferably equidistant distribution more, z. B. 24 or 36 holder z. B. each in the form of a cantilevered from an end face of the Mandrel wheel mandrel or a spindle, wherein each holder of each one of the hollow body to be printed is held or at least can be held. A trained as Mandrelrad transport device is sometimes referred to as a turntable with spindles. One Mandrelrad is z. B. in the EP 1 165 318 A1 described. A description of suitable holders, spindles or mandrels is found for. B. in the WO 2011/156052 A1 , In the following, each mandrel is referred to briefly as a mandrel. A longitudinal axis of each mandrel is directed parallel to the axis of rotation of the Mandrel wheel. In the case of each z. B. designed as a Zweiteildose to be printed hollow bodies, each of these hollow body z. B. by means of a conveyor, for. B. a belt conveyor to the z. B. introduced as Mandrelrad transport device and there at a transfer station z. B. sucked by suction on one of the mandrels of Mandandrades and then held by the mandrel concerned, while designed as Mandrelrad transport device to the respective hollow body to be printed z. B. to the occupied with at least one blanket segment wheel and thus transported towards at least one of the printing units or in an alternative embodiment z. B. transported without segment wheel directly to at least one of the printing units. I. d. R. be supplied to the mandrel with the conveyor in rapid succession sequentially a larger amount to be printed hollow bodies. Such a conveyor is z. B. in the EP 1 132 207 A1 described.

Between an inner wall of the respective hollow body to be printed and the surface of the respective mandrel of the Mandrelrades is preferably a gap with a width of z. B. 0.2 mm, so that the hollow body to be printed is not held by a pressure on the respective mandrel. Each thorn is z. B. rotatable by means of a motor about its respective longitudinal axis and in particular adjustable to a certain peripheral speed, so that each held by a mandrel to be printed hollow body in addition to the rotation of the Mandrel wheel by a stand-alone executed by the mandrel or at least executable rotation is rotatable. The slippage of the hollow body to be printed on one of the mandrels of Mandandrades preferably takes place during a standstill phase of the mandrel in question, wherein the mandrel in question during its stoppage phase does not perform rotational movement about its own longitudinal axis. The occupancy of each spine with a printable Hollow body is preferably checked, for. B. contactless with a sensor. In a missing assignment of a mandrel with a hollow body to be printed Mandrelrad z. B. such that a contact of the respective free mandrel is reliably avoided with a blanket of the segment wheel.

To be printed Zweiteildosen be before their delivery z. B. to mandrel in a mandrel wheel upstream processing station from a Ronde z. B. deep-drawn. In another processing station, each edge of its box is trimmed at its open end. Each Zweiteildose is z in other processing stations. B. washed, her interior in particular washed out. Optionally, the z. B. also designed as a Zweiteildose hollow body painted in a painting. At least the outer surface of each Zweiteildose z. B. primed, especially with a white primer. After printing on its lateral surface Zweiteildose of their respective holder z. B. on mandrel z. B. removed by compressed air or by a preferably switchable magnet and fed to at least one mandrel downstream of the processing station, z. B. an optionally further painting station for painting the outer lateral surface of each printed second can and / or an edging station. The printed Zweiteildosen go through in particular a dryer, z. B. a hot air dryer to cure the at least one applied to their respective lateral surface ink.

The printing process for printing in particular the respective lateral surface of z. B. held on the Mandrelrad hollow bodies, in particular Zweiteildosen, begins with the fact that all of the printing on the respective outer surface of the hollow body to be printed image required in each case z. B. from the respective printing plate of z. B. applied to the segment wheel plate cylinder are applied to the same of one of the circumference of the segment wheel blankets. The relevant blanket dyed with all the required printing inks then transfers in one Touch contact between the blanket and the lateral surface of the respective hollow body to be printed these inks simultaneously on the lateral surface of this hollow body during a single revolution of the held on one of the mandrels Mandandrades to be printed hollow body about its own longitudinal axis. During the transfer of the printing inks from the blanket to the lateral surface of the hollow body of the z. B. held by one of the mandrels Mandandrades to be printed hollow body with an absolute same circumferential speed as the concerned z. B. arranged on the circumference of the segment wheel blanket. The respective peripheral speeds of the hollow body and blanket or segment wheel are therefore synchronized with each other, wherein the z. B. on one of the mandrels of the Mandrel wheel held to be printed hollow body z. B. starting from its first contact point with the relevant blanket during the rolling of its lateral surface over a distance from the first z. B. 50 mm from the peripheral length of the blanket from its stoppage in particular until reaching the peripheral speed z. B. the segment wheel is accelerated accordingly. The segmental wheel carrying the relevant printing blanket accordingly gives the z. B. at the respective mandrel of the Mandrel wheel to be set peripheral speed. Also, the peripheral speed of the printing plate-carrying printing plate cylinder or the printing plate bearing plate cylinder is or is preferably in dependence on the peripheral speed z. B. the segment wheel set. The Mandrel and the Segmentrad are z. B. driven by a same central machine drive and optionally mechanically z. B. coupled together via a gearbox. Alternatively, the Mandrel and the Segmentrad are each driven individually by a separate drive and z. B. controlled by a control unit in their respective rotational behavior.

In particular, with reference to the previously described apparatus for printing or for decoration in particular of a respective z. B. cylindrical surface having hollow bodies are exemplified still different Details explained with reference to the aforementioned six figures. However, the individual assemblies explained below can also be used on or in other printing machines or printing units than in the preferred embodiment discussed here by way of example.

Fig. 1 shows in a schematic representation simplified and exemplified a generic device for printing or for decoration in particular in each case a preferably cylindrical lateral surface having hollow bodies 01, z. B. Secondary boxes 01, said hollow body 01 with a conveyor z. B. sequentially the z. B. supplied as a rotating or at least rotatable feed wheel, in particular as Mandrelrad 02 formed transport device and there are each held on a single holder to this transport device. In the following, it is assumed on the basis of the selected exemplary embodiment of the printing machine or of the device for printing hollow bodies that this transport device is preferably designed as a mandrel wheel 02. With the Mandrelrad 02 preferably acts an ink transferring device, eg. B. a rotating or at least rotatable Segmentrad 03 together, along whose or its circumference several printing blankets are arranged one behind the other. In association with the example mentioned Segmentrad 03 along the circumference several radially to this Segmentrad 03 employed or at least adjustable pressure plate cylinder 04, in particular plate cylinder 04 is provided, on the respective lateral surface of this plate cylinder 04 and plate cylinder 04 each have a printing plate, in particular a printing plate is arranged , This pressure plate is particularly suitable for carrying out a high-pressure process. Each of the printing form cylinder 04 or plate cylinder 04 is supplied to the coloring of its printing plate or its printing plate by means of an inking unit 06 each have a specific ink. In the following, it is assumed by way of example that the printing form cylinders 04 are each designed as a plate cylinder 04 carrying at least one printing plate.

Fig. 2 and 3 show in a simplified schematic representation of some details of each cooperating with a plate cylinder 04 inking unit 06, which z. For use in the in Fig. 1 illustrated device for printing or for decoration in particular of a preferably cylindrical lateral surface having hollow bodies 01 is provided. The inking unit 06 proposed here has for the color transport from a paint reservoir to the respective plate cylinder 04 advantageously a very short, ie consisting of only a few, preferably a maximum of five rolls, in particular two-roll compactor. In the case of the two-roll compactor, this compactor only consists of a single inking roller 07 and an inking roller 08 preferably formed as an anilox roller 08. An inking unit 06 with a maximum of five rollers compactor belongs to the genus of short inking units.

Fig. 2 shows by way of example a (short) inking unit 06 with a two-roll compactor in a first operating position, in which the inking roller 07 and the anilox roller 08 set against each other, employed the inking roller 07 to the plate cylinder 04 and also the plate cylinder 04 radially to the ink from the plate cylinder 04th on the lateral surface of the respective hollow body 01 transmitting device, in particular to the segment 03 are employed. Fig. 3 shows, however, for that in the Fig. 2 illustrated inking unit 06 a second operating position in which the inking roller 07 and the anilox roller 08 parked from each other, the inking roller 07 parked from the plate cylinder 04 and the plate cylinder 04 from the ink transferring device, in particular from the segment 03 are turned off. On the arrival and Abstellmechanismus will be discussed later.

The preferably designed as a plate cylinder 04 printing forme cylinder 04 and preferably designed as an anilox roller 08 inking roller 08 are z. B. each independently by a motor 11; 12 rotatively driven, in particular in the preferred used in the Fig. 2 and 3 shown inking 06, wherein the relevant engine 11; 12 z. B. in its respective speed and / or angular position of a z. B. electronic control unit in particular regulated or at least regulated. The z. B. trained as segment wheel 03 ink transferring device is z. B. driven by a separate drive or by a central machine drive rotatively. The inking roller 07 is or is rotationally driven by the anilox roller 08 by friction. In the preferred embodiment, an outer diameter d07 of the inking roller 07 and an outer diameter d04 of the at least one printing plate, in particular at least one printing plate bearing plate cylinder 04 are equal in magnitude. On the lateral surface of the plate cylinder 04 at least one printing plate is arranged or at least arrangeable, so that in the embodiment with the same outer diameters d04; d07 of the printing plate bearing plate cylinder 04 and the inking roller 07 each have an identical circumferential length. In the preferred embodiment, in the first operating position of the inking unit 06 cooperating with the plate cylinder 04, in which the inking roller 07 and the anilox roller 08 are set against one another, the inking roller 07 is set against the plate cylinder 04 and the plate cylinder 04 is also set against the segment wheel 03, at least the respective centers of the plate cylinder 04, the inking roller 07 and the anilox roller 08 along a same straight line G arranged. For detecting the rotation of the inking roller 07 is a detection device z. B. provided in the form of a rotary encoder, said encoder is particularly rigidly connected to a shaft of the inking roller 07. The signal generated by the rotary encoder during a rotation of the inking roller 07 is used by the control unit to adjust the speed and / or angular position of the inking roller 07 by means of the rotation of the anilox roller 08 or, if necessary, track such that a synchronization between the plate cylinder 04 and the inking roller 07 is set or adjusted, so that the peripheral speed of the inking roller 07 coincides with the peripheral speed of the plate cylinder 04 within predetermined allowable tolerance limits. To achieve this goal can be provided that the control unit preferably during the adjustment phase carried out by the peripheral speed of the anilox roller 08 such that it relative to the peripheral speed of the plate cylinder 04 in particular briefly - and thus not permanently - has a lead or lag. Due to the design of plate cylinder 04 and inking roller 07 each having the same circumference in terms of magnitude and by adjusting the synchronization between the plate cylinder 04 and the inking roller 07 of the printing quality detrimental effect of stenciling is largely avoided. The drive concept described here with a friction-driven inking roller 07 also has the advantage that the inking roller 07 own drive is not required, which saves costs and also because of the simpler mechanical design z. B. facilitates replacement of the inking roller 07 during maintenance or repair work.

The inking roller 07 has in its preferred embodiment a closed, preferably rubberized lateral surface. The preferably designed as an anilox roller 08 inking roller 08 has a z. B. coated with a ceramic surface, wherein in the ceramic layer a Haschur of z. B. 80 lines per centimeter axial length of the anilox roller 08 or a cup structure is formed. In order to allow the screen roller 08 with each of their revolutions each a feed of the largest possible amount of ink in the roller train of the inking unit 06, the outer diameter d08 of the anilox roller 08 is preferably formed larger than the outer diameter d07 of the inking roller 07. The anilox roller 08 should therefore have the largest possible delivery volume. In the Fig. 2 is the respective direction of rotation of the segment gear 03, the plate cylinder 04, the inking roller 07 and the anilox roller 08 each indicated by a direction of rotation arrow.

In the preferred embodiment, at least the inking roller 08, preferably designed as an anilox roller 08, has a tempering device with the aid of which Jacket surface of this roller is tempered. The tempering of the anilox roller 08 operates z. B. with a introduced into the interior of the anilox roller 08 tempering, wherein the tempering z. B. is water or another liquid coolant. With the tempering of the anilox roller 08, the delivery volume of the anilox roller 08 can be influenced since this influences the viscosity of the ink to be transported by the inking unit 06. The delivery volume of the anilox roller 08 and the viscosity of the ink to be transported by the ink 06 in turn ultimately affect a color density of the aufzutragenden on the cylindrical surface of the hollow body 01 to be printed ink. A thickness of a to be applied on the cylindrical surface of the hollow body 01 to be printed, formed by the ink color film is z. B. at about 3 microns.

The ink reservoir of the inking unit 06 is z. B. as formed in conjunction with the anilox roller 08 chamber doctor blade system 09. Advantageously, form in this chambered doctor blade system 09 at least one ink tray, an axially parallel to the anilox roller 08 employees or at least adjustable squeegee and preferably also a pump for conveying the ink a single unit. In this case, this chamber doctor blade system 09 in the inking unit 06, that is preferably on one frame of the inking unit 06 only on one side z. B. held by a suspension or stored, so that this unit in a simple manner after its release from the frame of the inking unit 06 laterally, ie by an axially parallel to the anilox roller 08 directed movement, z. B. by pulling on a arranged on this unit handle from the inking unit 06 removable and thus interchangeable. This assembly of the chambered doctor blade system 09 preferably forms a cantilever arm on a side frame of the inking unit 06. Fig. 4 shows in a perspective view formed as a single unit chamber doctor blade system 09 in cooperation with the anilox roller 08 of the inking unit 06th

After the anilox roller 08 ink has absorbed from the ink reservoir, ie in particular from the chambered doctor blade 09, the anilox roller 08 transports them Ink directly and directly or via other rollers belonging to the inking unit 06 compactor to the preferably only one inking roller 07. In an in the direction of rotation of the anilox roller 08 to the anilox 08 salaried chambered doctor blade 09 subsequent area between the chambered doctor blade 09 and the inking roller 07 is preferably a Rider roller 13 employed to the anilox roller 08 or at least adjustable to improve uniformity of the ink application on the anilox roller 08 and their color transport. The rider roll 13 is arranged axially parallel to the anilox roller 08. The rider roll 13 is not considered to belong to the roller train of the inking unit 06 because it does not transfer ink from the anilox roller 08 to another roller. The of the anilox roller 08 z. B. by friction rotatably driven rider roller 13 has z. B. a rubberized jacket surface. The hired on the anilox roller 08 rider roller 13 sucks in their unwinding on the lateral surface of the anilox roller 08 a part of the anilox roller 08 from the chambered doctor blade 09 recorded ink from the Haschur or the wells of the anilox roller 08 and applies this ink at least partially on the lateral surface of the Anilox roller 08 trained webs. As a result, the rider roller 13 rolling on the anilox roller 08 causes the anilox roller 08 to deliver a larger quantity of printing ink to the inking roller 07. In another episode is at a z. B. a tempering having anilox roller 08 also improves the effectiveness of controlling the color density, characterized in that the rolling on the anilox roller 08 rider roller 13 contributes to the provision of a larger amount of ink. Regardless of the specific configuration of the anilox roller 08, ie with or without a tempering device, the rider roller 13 rolling on the anilox roller 08 thus reduces both differences in density which can arise due to manufacturing tolerances of the anilox roller 08 and the risk of visibility of the hematite or wells of the anilox roller 08 on the printing substrate, ie here on the lateral surface of the hollow body 01 to be printed as a result of an at least in places too low paint application.

In a very advantageous embodiment of the apparatus for printing hollow bodies is preferably a fixed assignment to at least one, preferably to each plate cylinder, in particular plate cylinder 04 each provided a plate changer 14, with which the particular for the respective printing form cylinder printing plate or for the respective plate cylinder 04 certain printing cliché within z. B. the device concerned for printing or for decoration of a particular cylindrical lateral surface having hollow bodies 01 preferably automated, d. H. can be replaced without intervention by operating personnel. With this plate changer 14, a printing forme for this particular form 04 printing form within this device is preferably interchangeable from that side of the respective printing unit forth, which is in particular diametrically opposed to the unit of the chambered doctor blade 09 holding side. The plate changer 14 is arranged in the apparatus for printing hollow bodies on the relevant printing unit in association with its printing forme cylinder 04, which has the inking unit 06 with the unilaterally held unit of the chambered doctor blade system 09, wherein this plate changer 14 for this printing forme cylinder 04 certain printing for that side of the relevant printing unit which is diametrically opposite the side of the unit of the chambered doctor blade 09 holding side, supplied or at least be supplied.

The Fig. 5 and 6 show in a perspective view of a preferred embodiment of a very advantageous formed plate changer 14 in two different operating positions for executing a preferably in a very short set-up time automatically, reliably and also in register enforceable plate change or printing plate change. Fig. 5 shows a first operating position, in which axially laterally next to the printing unit on the plate cylinder or plate changer 14 z. B. submitted a printing plate or removed from the disk changer 14. Fig. 6 shows a second operating position, in the immediately before the plate cylinder or plate cylinder 04 along to this from the plate changer 14 from z. B. a Printed cliché placed directly on the associated plate cylinder 04 or a printing plate removed from the plate cylinder 04 and can be removed with the plate changer 14 in its first operating position. The disk changer 14 has a particular plane, z. B. table-shaped support surface 16, on which z. B. a arranged on the plate cylinder 04 or to be arranged printing plate can be placed preferably completely. The bearing surface 16 is preferably arranged to be movable back and forth linearly in particular longitudinally of the axis of rotation of the associated printing plate cylinder or plate cylinder 04 between at least two defined positions. In a laterally located next to the printing unit first position of the support surface 16, this movable, in particular movable support surface 16 of the disc changer 14 assumes its first operating position, in a directly before the plate cylinder or plate cylinder 04 along this second position of the support surface 16 its second operating position , In the first operating position, the support surface 16 of the plate changer 14 is at least partially in front of a front side of the respective plate cylinder or plate cylinder 04. In the second operating position, the support surface 16 of the plate changer 14 is preferably at least partially below the lateral surface of the plate cylinder or plate cylinder 04th The movement of the support surface 16 of the disk changer 14 takes place z. B. along a longitudinally to the plate cylinder or plate cylinder 04 arranged traverse 17. The support surface 16 of the disc changer 14 thus has a reference to the respective plate cylinder or plate cylinder 04 axial travel. At the first or second operating position of the disc changer 14 defining positions, the movement of the support surface 16 z. B. each bounded by a stop. At least the carrier of the respective printing plate is z. B. formed by a particular running using registration marks trimming such that the relevant printing plate can be arranged in register on the support surface 16 of the disk changer 14. For this purpose, at least two at a right angle to each other arranged edges of the carrier of the respective printing plate in a Touched contact to arranged on the support surface 16 of the plate changer 14 stops, wherein a first edge of the carrier of the respective printing plate abuts a first stop and an orthogonal to the first edge second edge of the carrier of the respective printing plate to a second stop. In this case, one of these two stops in its position is preferably changeable and in particular adjustable. By adjusting the adjustable in its position stop the relevant printing plate is aligned in register. The adjustment of the variable in its position stop can be done manually or automatically by a control unit. Since the printing plate is supplied to the relevant plate cylinder 04 in register, is on the plate cylinder 04 z. B. no centering pin and no other register device provided. The first stop and / or the second stop are designed as a respective cylindrical or conical machine element perpendicular to the support surface 16 of the plate changer 14, preferably each as a register pin standing perpendicular to the support surface 16 of the plate changer 14.

The plate changer 14 has in its preferred embodiment except the support surface 16 for receiving a z. B. the plate cylinder 04 to be supplied in register pressure cliche z. As a subject, in which z. B. a detached from the plate cylinder 04 printing plate can be stored. A by means of its carrier in particular magnetically held on the jacket surface of the relevant plate cylinder 04 printing plate is z. B. by means of a tool guided tangentially to the printing form, for. B. lifted by means of a guided between the carrier of the printing plate and the lateral surface of the relevant plate cylinder 04 spatula of the lateral surface of the respective plate cylinder 04 or is at least lifted off from there. The lifted off from the lateral surface of the respective plate cylinder 04 one end of the respective printing plate is introduced by rotation of the relevant plate cylinder 04 in the relevant compartment of the plate cylinder 04. By a continuation of this rotation of the respective plate cylinder 04 is then the entire of the lateral surface of the relevant plate cylinder 04 dissolved printing plate inserted into the relevant tray of the disc changer 14.

A printing plate which is to be supplied in register to the relevant plate cylinder 04 is held on the bearing surface 16 of the plate changer 14 after it has been registered in register by a magnetic holding force. It is at least one stamp, preferably two in the longitudinal direction of the respective plate cylinder 04 spaced pistes each provided with a magnetic holding force oppositely directed direction of action, said effective direction to the support surface 16 of the disc changer 14 z. B. is directed substantially orthogonal. With this at least one stamp at least one of the relevant plate cylinder 04 facing the end of the bearing surface 16 of the plate changer 14 held printing plates from this support surface 16 releasably and due to a lifting movement of the at least one punch to the relevant plate cylinder 04 can be transferred. The at least one stamp is z. B. pneumatically operated or is at least so actuated. For holding the printing plate or the printing plate on the support surface 16 of the plate changer 14 or on the lateral surface of the plate cylinder 04 each magnets are used, these magnets are preferably each formed as a permanent magnet. The above-described embodiment of the plate cylinder 04 has the advantage that a conveyor for transferring the printing plate to the respective plate cylinder 04 or for removing the printing plate of the respective plate cylinder 04 is not required and the disc changer 14 can therefore be realized very inexpensively. In particular, a plate change with the disk changer 14 described above can be carried out automatically.

The respective employment and / or shutdown of printing form cylinder or plate cylinder 04, inking roller 07 and / or anilox roller 08 and / or an adjustment of each of them exerted contact pressure takes place with an example in the Fig. 2 and 3 illustrated arrival and Abstellmechanismus, which will now be described in more detail. In the Preferably, the plate cylinder 04 or plate cylinder is mounted at both ends on a load arm of a force arm and the load arm preferably one-sided first lever assembly 18, wherein the power arm and the angle fixed to the power arm arranged load arm of this first lever assembly 18 together about an axis parallel to the plate cylinder 04 directed first axis of rotation 19 are pivotable. In an operative connection to the power arm of the first lever assembly 18 is for exerting a torque about the first axis of rotation 19, a preferably controllable by a control unit first drive 21 z. B. arranged in the form of a hydraulic or pneumatic working cylinder, wherein upon actuation of this first drive 21 depending on the effective direction of the load arm of this first lever assembly 18 arranged printing form cylinder or plate cylinder 04 either from a blanket z. B. the segmented wheel 03 is turned off or employed on selbiges. To limit the printing forme cylinder or plate cylinder 04 against the relevant blanket z. B. the segment wheel 03 applied contact force, for example, a first stop 22 is provided for the power arm of the first lever assembly 18, by means of which a by the pivotal movement of the plate cylinder or plate cylinder 04 against the Segmentrad 03 zurückgelegter path is limited. With the first drive 21, the pressing force exerted by the plate cylinder or plate cylinder 04 against the segment 03 is adjustable.

In the preferred embodiment, the inking roller 07 is mounted in particular at both ends on a load arm of a force arm and the load arm preferably one-sided second lever assembly 23, wherein the power arm and the load arm of this second lever assembly 23 together about the axis of rotation parallel to the plate cylinder 04 directed first axis of rotation 19th are pivotable. Likewise, in the preferred embodiment, the z. B. formed as an anilox roller 08 inking roller 08 in particular at both ends on a load arm one consisting of a power arm and the load arm preferably one-sided third lever assembly 24, wherein the power arm and the load arm of this third lever assembly 24th together about an axis parallel to the anilox roller 08 directed second axis of rotation 26 are pivotally, wherein the second axis of rotation 26 of the third lever assembly 24 is disposed on the second lever assembly 23. In this case, the second axis of rotation 26 is preferably formed stationary on the second lever arrangement 23. On the load arm of the first lever assembly 18, a preferably controllable second drive 27 is actuated when acting on the power arm of the second lever assembly 23, by means of which the inking roller 07 depending on the direction of action of the second drive 27 to the plate cylinder 04 adjustable or offset from this. On the load arm of the second lever arrangement 23, a preferably controllable third drive 28 is actuated during its actuation on the power arm of the third lever arrangement 24, by means of which the anilox roller 08 together with the chambered doctor blade system 09, depending on the effective direction of the third drive 28, can be adjusted to the inking roller 07 or by this off. The second drive 27 and / or the third drive 28 are each z. B. also formed in the form of a hydraulic or pneumatic working cylinder. It can be provided that the second drive 27 and the third drive 28 z. B. together and preferably also be operated simultaneously or at least actuated. The pivoting movement of the load arm of the second lever assembly 23 is z. B. limited by a preferably adjustable, in particular adjustable by an eccentric first stop system 29, whereby the force exerted by the inking roller 07 against the printing plate cylinder or plate cylinder 04 contact force is limited or at least limited. The pivoting movement of the load arm of the third lever arrangement 24 is z. B. limited by a preferably adjustable, in particular adjustable by an eccentric second stop system 31, whereby the force exerted by the anilox roller 08 against the inking roller 07 contact pressure is limited or at least limited. Fig. 2 shows, by way of example, a first operating state in which the first drive 21 and the second drive 27 and the third drive 28 are respectively unactuated or in their idle state, whereby the anilox roller 08 to the inking roller 07 and the inking roller 07 to the printing plate cylinder or plate cylinder 04 and the printing plate cylinder or plate cylinder 04 are each employed on the segment wheel 03. Fig. 3 shows by way of example a second operating state in which the first drive 21 and the second drive 27 and the third drive 28 are respectively actuated or in their working state, whereby the anilox roller 08 of the inking roller 07 and the inking roller 07 from the plate cylinder or plate cylinder 04 and the Printing form cylinder or plate cylinder 04 are parked by the segment 03 each. The respective force arm and / or load arm of the three aforementioned lever arrangements 18; 23; 24 is or are each z. B. formed as a pair of opposing lever rods or side frame walls, between which in the respective above-described assignment of either the plate cylinder or plate cylinder 04 or the inking roller 07 or the anilox roller 08 is arranged. The three aforementioned lever arrangements 18; 23; 24 are each arranged in different spaced-apart vertical planes, so that they do not interfere with each other in their respective pivoting.

LIST OF REFERENCE NUMBERS

01

Hollow body; Two-piece can

02

Mandrelrad

03

segmented

04

Plate cylinder; plate cylinder

05

-

06

inking

07

Inking roller

08

Inking roller; anilox roller

09

Chambered doctor blade system

10

-

11

engine

12

engine

13

riding roller

14

record changer

15

-

16

bearing surface

17

traverse

18

Lever arrangement, first

19

Rotation axis, first

20

-

21

Drive, first

22

Stop, first

23

Lever arrangement, second

24

Lever arrangement, third

25

-

26

Rotation axis, second

27

Drive, second

28

Drive, third

29

Stop system, first

30

-

31

Stop system, second

d04

outer diameter

d07

outer diameter

d08

outer diameter

G

Just

Claims (16)

1. A printing unit with a printing form cylinder (04), wherein a plate changer (14) is arranged in allocation to the printing form cylinder (04), wherein the plate changer (14) has a contact surface (16), upon which a printing form arranged or to be arranged on the printing form cylinder (04) can be placed, wherein this contact surface (16) is arranged alongside the rotational axis of the printing form cylinder (04) to be moveable to and from between at least two defined positions, wherein the printing form is arranged on the contact surface (16) of the plate changer (14) in register, characterized in that at least two edges of a carrier of the relevant printing form arranged at a right angle to one another are brought into a contact to register pins arranged on the contact surface (16) of the plate changer (14), wherein a first edge of the carrier of the relevant printing form is arranged on a first register pin and a second edge of the carrier of the relevant printing form orthogonal to the first edge is arranged on a second register pin, in each case making contact, wherein the printing form resting on the contact surface (16) is held there by a magnetic holding force on the contact surface (16) of the plate changer (14), wherein at least one ram with an active direction directed against the magnetic holding force is provided, with which at least one ram at least one end facing the printing form cylinder (04) of the printing form held on the contact surface (16) of the plate changer (14) can be detached from this contact surface (16) and can be transferred to the printing form cylinder (04).
2. The printing unit according to claim 1, characterized in that the plate changer (14) occupies a first operating position in a first position of the contact surface (16) laterally next to the printing unit, in which on the plate changer (14) a printing form can be positioned or can be removed from the plate changer (14), and that the plate changer (14) occupies a second operating position in a second position of the contact surface (16) located directly in front of the printing form cylinder (04) along said printing form cylinder, in which, from the plate changer (14) a printing form can be placed directly on the printing form cylinder (04) or a printing form can be removed from the printing form cylinder (04) and with the plate changer (14) can be conducted away to its first operating position.
3. The printing unit according to claim 1 or 2, characterized in that the contact surface (16) of the plate changer (14) in its first operating position is located at least partly in front of a front of this printing form cylinder (04).
4. The printing unit according to claim 1 or 2 or 3, characterized in that the contact surface (16) of the plate changer (14) in its second operating position is located at least partly below the outer surface of the printing form cylinder (04).
5. The printing unit according to claim 1 or 2 or 3 or 4, characterized in that with the contact surface (16) of the plate changer (14) a travel range running parallel to the printing form cylinder (04) can be executed.
6. The printing unit according to claim 1 or 2 or 3 or 4 or 5, characterized in that the plate changer (14) has a shelf outside of the contact surface (16) for receiving a printing form to be fed to the printing form cylinder (04), in which a printing form removed from the printing form cylinder (04) can be placed.
7. The printing unit according to claim 1 or 2 or 3 or 4 or 5 or 6, characterized in that the at least one ram is or at least can be pneumatically actuated and/or that the at least one ram is configured executing a lifting movement.
8. The printing unit according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7, characterized in that the first register pin and/or the second register pin in their respective positions can each be changed and set.
9. The printing unit according to claim 8, characterized in that a setting of the relevant register pin with a variable position is automatically executed or at least can be executed.
10. The printing unit according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9, characterized in that the contact surface (16) of the plate changer (14) is configured plane and in the shape of a table.
11. The printing unit according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10, characterized in that the relevant printing form can be placed on the contact surface (16) in its entirety.
12. The printing unit according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11, characterized in that the movement of the contact surface (16) of the plate changer (14) is carried out along a traverse (17) arranged alongside the printing form cylinder (04).
13. The printing unit according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12, characterized in that the movement of the contact surface (16) at the positions defining the first operating position or the second operating position of the plate changer (14) is limited in each case by a stop.
14. The printing unit according to claim 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13, characterized in that a printing form to be placed in the shelf of the plate changer (14) is lifted from the outer surface of the relevant printing form cylinder (04) by means of a tool conducted tangentially to this printing form.
15. The printing unit according to claim 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13 or 14, characterized in that a printing form placed in the relevant shelf of the plate changer (14) is inserted into the relevant shelf by rotating the relevant printing form cylinder (04).
16. The printing unit according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13 or 14 or 15, characterized in that this printing unit is arranged in an apparatus for printing on hollow bodies.

Images