DE102019125130A1 - Device for printing the respective outer surface of hollow bodies - Google Patents

Abstract

The invention relates to a device for printing the respective outer surface of hollow bodies, with a mandrel wheel having a plurality of holding devices, a hollow body can be arranged on each of these holding devices, a mechanical friction brake being arranged in the periphery of the mandrel wheel, with a friction body of the friction brake at least one on one of the holding devices of the mandrel wheel held rotating hollow body is arranged to be braked by friction, the friction body of the friction brake being moved relative to the hollow body held on one of the holding devices of the mandrel wheel, the movement of the friction body of the friction brake to the outer surface of the hollow body having a tangential speed component, wherein In the transport direction of the hollow body after the mandrel wheel there is a rotating or at least rotatable transfer disk for taking over the hollow bodies held on the mandrel wheel, with the being tangent iale speed component having movement of the friction body of the friction brake is mechanically coupled to the rotational movement of the transfer disk.

Description

The invention relates to a device for printing the respective outer surface of hollow bodies according to the preamble of claim 1.

Such as B. from the WO 2012/148576 A1 is known, several printing units are mostly used in the packaging industry in a device for decorating hollow bodies each having a cylindrical outer surface. In this case, each of these printing units transfers one printing ink to a printing blanket used jointly by these printing units. The outer surface of the hollow body in question is then by a relative movement between the outer surface of the hollow body in question and the previously in particular multi-colored printing blanket, in particular by rolling the outer surface of the hollow body in question on this printing blanket, with a z. B. decorated multicolored print motif.

Such a device for printing or for decorating hollow bodies, in particular each having a preferably cylindrical outer surface, is e.g. B. used in connection with a production plant, which usually has several workstations, for the manufacture and further processing of such hollow bodies, the printing or decoration of the hollow bodies being carried out by an industrially executed or at least executable printing process, which is why these hollow bodies can generally also be referred to as printed products. In such a production facility, the hollow bodies to be printed are mass-produced with z. B. several hundred or even a few thousand pieces per minute, e.g. B. between 1,500 and 2,500 pieces per minute, particularly preferably between 1,800 and 2,200 pieces per minute. Such hollow bodies are z. B. made of metal, in particular steel or aluminum, or made of a plastic. Such hollow bodies made of metal are z. B. used as beverage cans or as aerosol cans. Such hollow bodies made of plastic are z. B. manufactured in the form of thermoplastic moldings and z. B. as a cup for packaging z. B. used by liquid or pasty foods, especially dairy products or beverages. The respective hollow body can also be a round tube body made either from a plastic or from aluminum, whereby a tube is understood to be an elongated, solid, but malleable container which is intended to be filled with a particularly paste-like substance. Tubes made of aluminum are z. B. produced in a reverse extrusion process. Tubes made of plastic are z. B. each produced as seamless tubes by means of extrusion. Another type of hollow bodies to be printed in an aforementioned device can be preferably cylindrical containers or vessels made of glass, e.g. B. Bottles or flacons.

Beverage cans are preferably made of aluminum and are i. d. Typically so-called two-part cans, in which a circular base together with a preferably straight cylinder jacket each consist of a single workpiece, i. H. from a so-called slug or from a round blank, d. H. a circular disc, in a forming process, e.g. B. in a cold extrusion process or in a tensile compression forming process, preferably by deep drawing, in particular by ironing deep drawing, to form a hollow body open on one side, d. H. can be manufactured into a so-called raw can, and in a production step carried out at the end of production, a circular cover is placed on the cylinder jacket and connected to the cylinder jacket in an airtight manner by flanging.

Another type of can are tinplate cans. Tinplate is a tin-plated steel sheet. For the production of tinplate cans, the thickness of the steel sheet is 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 into a preferably straight cylinder jacket, the ends of this strip bent to form a cylinder jacket being welded in a butt joint. Then a circular base and a circular cover are placed on the cylinder jacket and the edges are flanged. In order to obtain a higher resistance to impressions for the tinplate can in question, z. B. all three parts, d. H. the cylinder jacket, the base and the cover preferably have a wave profile.

An aerosol can, also known as a spray can or spray can, is a metal can for spraying liquids. In an aerosol can, the liquid filled is under pressure, the propellant gas used to dispense the liquid in question from the can in question, for. B. 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, an arrangement of several printing units, each with an inking unit, being provided for the multicolored decoration of a plurality of cans. Each of the inking units belonging to one of the printing units has an ink fountain for providing printing ink, in each of which Ink fountain is provided with an ink fountain roller for receiving the printing ink from the relevant ink fountain. In each inking unit there is an inking ductor, the inking ductor taking up printing ink from the respective ink fountain roller, with several oscillating ink distributor rollers and several ink transfer rollers each cooperating with at least one of the ink distributor rollers being provided in a roller train following the respective ink fountain roller in the relevant inking unit. For each inking unit there is a plate cylinder with at least one printing plate, with only a single inking roller cooperating with the respective plate cylinder for applying the printing ink.

Through the U.S. 4,741,266 A a device for decorating cans is known, with several inking stations and plate cylinder devices, each of the plate cylinder devices being driven separately by a main gear, the main gear being associated with a pressure roller device so as to be completely independent of the roller drive device of each inking station.

Through the WO 2018/013465 A1 a decorator with a mandrel wheel, a segment wheel, a transfer disk and a transport chain is known, the mandrel wheel, the segment wheel, the transfer disk and the transport chain each having a motor and a decoder, a controller being provided, the controller being based on a Information received from the decoders adapts or sets the respective speed of the mandrel wheel, the segment wheel, the transfer disk and the transport chain.

Through the DE 10 2018 201 033 B3 A device for decorating hollow bodies is known, a braking belt being provided in the periphery of the mandrel wheel in the transport direction of the hollow body after a paint application roller of a painting device, the braking belt being arranged to brake at least one rotating hollow body held on one of the holding devices of the mandrel wheel by friction.

The invention is based on the object of creating a device for printing the respective outer surface of hollow bodies.

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

An embodiment of the invention is shown in the drawings and is described in more detail below. Advantages that can be achieved with the invention are mentioned in connection with the exemplary embodiment.

• 1 eine Vorrichtung zum Bedrucken bzw. zur Dekoration der jeweiligen Mantelfläche von Hohlkörpern;
• 2 die Vorrichtung gemäß der 1 mit mehreren Einzelantrieben;
• 3 die Vorderseite einer Anordnung mit einer Kopplung der Bewegung eines Reibkörpers einer Reibungsbremse mit der Rotationsbewegung einer Transferscheibe;
• 4 die Rückseite der Anordnung der 3 mit der Kopplung der Bewegung des Reibkörpers der Reibungsbremse mit der Rotationsbewegung der Transferscheibe;
• 5 eine Draufsicht auf die Anordnung gemäß den 3 und 4.

Show it:

• 1 a device for printing or decorating the respective outer surface of hollow bodies;
• 2 the device according to 1 with several individual drives;
• 3 the front of an arrangement with a coupling of the movement of a friction body of a friction brake with the rotational movement of a transfer disk;
• 4th the back of the arrangement of the 3 with the coupling of the movement of the friction body of the friction brake with the rotational movement of the transfer disk;
• 5 a plan view of the arrangement according to FIG 3 and 4th .

The printing of the outer surface of a hollow body with a z. B. multicolored print motif, ie at least one print image, takes place in a preferred embodiment in a letterpress process. Alternative or additional printing processes are e.g. B. a screen printing process or an offset printing process or a printing formless digital printing process. In the following, the invention is described by way of example in connection with an indirect letterpress printing process, in which printing ink is first applied to a printing blanket and only from there onto the outer surface of a hollow body. To carry out this special letterpress process, a printing plate is arranged as a printing form on a lateral surface of a plate cylinder, which is why this cylinder is sometimes also referred to as a plate cylinder, especially when the printing plate is e.g. B. is or is arranged on a sleeve sleeve pulled onto the cylinder. The more general term “printing forme cylinder” used in the following should basically include both embodiments, ie the classic design as a plate cylinder as well as the design as a “cliche cylinder”. The printing cliché ready for use for the printing process is a printing form with a printing relief, this printing relief reproducing the printing image provided for the printing process of the indirect letterpress printing process without mirroring, in contrast to the classic, i.e. direct letterpress printing process, whereby in a trouble-free printing operation only the printing relief on the transfer of the plate cylinder is involved in the printing ink supplied by the inking unit on at least one printing blanket that interacts with this plate cylinder. The printing form or the printing block to be drawn on a plate cylinder has z. B. a plate-shaped preferably flexible support of finite length z. B. from a steel sheet, with on a particularly flexible pressure body is arranged on this carrier. At least the opposite ends of the carrier in the circumferential direction of the plate cylinder can, for. B. be pre-bent or angled according to the curvature of the lateral surface of the plate cylinder in order to allow easier assembly of the printing forme, ie here in particular the printing cliché on the plate cylinder. The carrier of the printing form or the printing plate has a thickness in the range of, for. B. 0.2 mm to 0.3 mm. The printing block including its carrier has a total thickness in the range of, for. B. 0.7 mm to 1.0 mm, preferably about 0.8 mm. The pressure body is z. B. formed from a plastic. The printing body is used for the production of the printing cliché z. B. exposed with a negative film reproducing the print image, with unexposed areas then from the printing body z. B. can be removed by washing or by means of a laser.

A device for printing or decorating hollow bodies, each preferably having a cylindrical outer surface, is also referred to as a decorator and preferably has several, e.g. B. eight or ten or even more printing units - also called printing stations - on, at least one of these printing units, in the preferred embodiment all these printing units each have an inking unit and a rotatable printing forme cylinder, in particular a printing forme cylinder designed as a plate cylinder. In this case, the printing units or printing stations, optionally together with the printing forme cylinders, are each stored in a frame in this device and can be used in the same printing process to form a multicolored printing motif on the same hollow body according to the number of printing units or printing forme cylinders involved. The storage of the printing forme cylinder or plate cylinder is preferably carried out at both ends, but it can also be designed as a cantilever bearing in which the printing forme cylinder or plate cylinder in question only on one of its front sides, for. B. is mounted on a preferably conical pin. On the outer surface of each printing forme cylinder usually only a single printing cliché is arranged, with the carrier of the printing cliché completely or at least largely, in particular more than 80%, of the circumference of the printing forme cylinder in question. A length of the printing body of the printing block directed in the circumferential direction of the printing forme cylinder in question is preferably shorter than the circumferential length of the printing forme cylinder in question. The printing form or the printing cliché is, in particular, magnetically arranged on the lateral surface of each printing form cylinder by means of its carrier, or at least can be arranged, d. H. the printing form or the printing cliché is preferably magnetic there, d. H. held by means of a magnetic holding force. In an alternative or additional embodiment of the device for printing or decorating hollow bodies, each preferably having a cylindrical outer surface, at least one of the printing units or several of these printing units are each designed as a printing unit that prints without printing form in a digital printing process, such a printing unit in particular has at least one inkjet print head or a laser.

The, in particular, simultaneous transfer of several printing inks, in particular to the outer surface of the hollow body in question, requires this color transfer to take place in register in order to achieve a good print quality in the printing process. For a register-based arrangement of the printing form or the printing cliché on the lateral surface of the relevant printing form cylinder or plate cylinder, in the preferred embodiment, several z. B. in their respective position adjustable dowel pins are provided, which engage in corresponding recesses formed on the printing forme or on the printing cliché and the printing forme or the printing cliché thereby with its or its arrangement on the outer surface of the printing forme cylinder or plate cylinder there a give a defined position. In particular, a page register of the printing form or the printing block can be attached to a z. B. cut side edge of this printing form or this printing cliché and a circumferential register of this printing form or this printing cliché be aligned with a stop. In a preferred embodiment, each printing forme cylinder or plate cylinder has a diameter in the range between 100 mm and 150 mm, in particular between 120 mm and 130 mm, with an axial length of the respective printing forme cylinder or plate cylinder, for. B. between 200 mm and 250 mm, in particular between 200 mm and 220 mm. The printing block to be arranged on the lateral surface of the relevant printing forme cylinder or plate cylinder has a width in the axial direction of the relevant plate cylinder in the range from 150 mm to 200 mm, preferably approximately 175 mm.

Each of the e.g. B. designed as a plate cylinder printing forme cylinder transfers with its printing forme or with its printing cliché in each case a certain printing ink on a printing blanket. The printing inks used are usually premixed, in particular order-specific special colors, which are e.g. B. with regard to their respective printability in a special way are matched to the material of the hollow body to be printed, depending on whether a surface z. B. made of aluminum, a tinplate or a plastic is printed. These order-specific special colors usually also differ in their respective hue. In a preferred embodiment of a device for printing or for decoration of each z. B. a cylindrical outer surface having hollow bodies, a printing ink is provided from the printing form or the printing block to the surface of the hollow body in question transferring device. This ink-transferring device is preferably designed as a segment wheel rotating about a particularly horizontal axis, wherein on the periphery of this segment wheel, ie along its circumference one behind the other, preferably several, z. B. eight, ten, twelve or even more printing blankets are arranged or at least can be arranged. As an alternative to the segmented wheel, the printing ink-transferring device can, depending on the printing process used, also be designed as a decoration drum or as a blanket cylinder or as a transfer cylinder, each of which can be rotated around a rotation axis at least during printing. The arrangement of the printing blankets on the circumference of the segment wheel takes place, for. B. in that the printing blankets on the circumference of the segment wheel each z. B. are attached by an integral connection, preferably by an adhesive bond. The preferably several printing forme cylinders or plate cylinders are each adjusted radially or at least adjustable against the printing blankets arranged on the circumference of the segment wheel in question. In a particularly preferred embodiment of a device for printing or decorating one z. B. cylindrical outer surface having hollow bodies - ie a decorator - a larger number of printing blankets is arranged one behind the other along the circumference of the segmented wheel than are provided in each case on the segmented wheel radially adjusted or at least adjustable printing forme cylinders or plate cylinders. The preferably carousel-like printing ink-transferring device, in particular the segment wheel has a diameter of, for. B. 1,400 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 on its circumference one behind the other z. B. twelve blankets. The surface of each printing plate is preferably designed with a greater hardness than the hardness of the respective surface of the printing blankets. The surface of the printing blankets is preferably flat, that is, it is designed without profiling. In an operating state in which the printing form cylinders or plate cylinders involved in the printing process are each positioned radially on the printing blankets of the rotatively driven segmented wheel, the respective printing forms of these printing forme cylinders or the respective printing blocks of these plate cylinders roll on the printing blankets moved by the segmented wheel, with the printing plates press at least their printing relief into the respective printing blanket or at least press them on. An intensity of the impression is e.g. B. before or at the beginning of a printing process z. B. by means of a remote control by setting a pressure force exerted by the relevant printing forme cylinder or plate cylinder on the relevant printing blanket of the segmented wheel, or is set in such a way.

The hollow bodies to be printed here by way of example, e.g. B. the two-part cans to be printed, z. B. by means of a hollow body to be printed, preferably along at least part of a circular path, d. H. of a circular arc around an axis of rotation, preferably by means of at least one feed wheel, in particular by means of a mandrel wheel, continuously or at a set cycle, to at least one of the printing units belonging to the device for printing on a lateral surface of hollow bodies and thus to a printing area of at least one of these Printing units transported. In particular, the hollow body to be printed by means of the transport device to at least one of the z. B. brought up on the segment wheel arranged printing blankets, or the hollow bodies to be printed are each directly and immediately by means of this transport device, d. H. without the help of a z. B. designed as a segment wheel printing ink-transmitting device in the respective printing area of at least one of these printing units transported what z. B. is the case when the relevant printing unit in a direct printing process, for. B. prints in an inkjet printing process.

That like z. B. the segment wheel also rotating about a preferably horizontal axis feed wheel or mandrel wheel concentrically to its circumferential line in preferably equidistant distribution several, z. B. 24 or 36 holding devices - in short: holder - z. B. each in the form of a mandrel protruding from an end face of the mandrel wheel or a spindle, each holder holding one of the hollow bodies to be printed or at least being able to hold them. A transport device designed as a mandrel wheel is sometimes also referred to as a turntable with spindles. A mandrel wheel is z. B. in the EP 1 165 318 A1 described. A description of suitable holders, spindles and mandrels can be found, for. B. in the WO 2011/156052 A1 . In the following, each mandrel is briefly referred to as a mandrel. A longitudinal axis of each mandrel is directed parallel to the axis of the mandrel wheel. In the case of each z. B. designed as a two-part box to be printed hollow bodies, each of these hollow bodies z. B. by means of a conveyor, e.g. B. a belt conveyor and / or a conveyor wheel to which z. B. designed as a mandrel wheel transport device and there at a transfer station z. B. by means of vacuum suction on one of the mandrels of the mandrel wheel and then held by the mandrel in question, while the transport device designed as a mandrel wheel the respective hollow body to be printed z. B. to the segment wheel covered with at least one printing blanket and thus transported in the direction of at least one of the printing units or, in an alternative embodiment, for. B. transported directly to at least one of the printing units without a segment wheel. I. d. As a rule, a larger amount of hollow bodies to be printed are fed to the mandrel wheel with the conveyor in rapid succession. 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 relevant mandrel of the mandrel wheel, there is preferably a gap with a width of less than 1 mm, e.g. B. formed of 0.2 mm, so that the hollow body to be printed is not held by pressing on the mandrel in question. Each mandrel can be rotated almost smoothly about its respective longitudinal axis. Each of the mandrels is driven by a drive means cooperating with the respective mandrel, e.g. B. is set to a certain circumferential speed by means of friction or is at least adjustable so that each hollow body to be printed on held by a mandrel is arranged rotating or at least rotatable in addition to the rotation of the mandrel wheel by an independently executed or at least executable rotation by the mandrel. The hollow body to be printed is slipped onto one of the mandrels of the mandrel wheel preferably during a standstill phase of the relevant mandrel, the relevant mandrel not rotating about its own longitudinal axis during its standstill phase. The occupancy of each mandrel with a hollow body to be printed is preferably checked, e.g. B. contactless with a sensor. If there is no assignment of a mandrel with a hollow body to be printed, the mandrel wheel z. B. moved in such a way that contact of the relevant free mandrel and possibly a few other mandrels with a printing blanket of the segment wheel is reliably avoided.

Two-part cans to be printed are z. B. to the mandrel wheel in a machining station upstream of the mandrel wheel, z. B. deep-drawn from a round blank. In a further processing station, the edge of each two-piece can is trimmed on its open end. Each two-part box is z. B. washed, in particular their inside washed out, if necessary, the inner wall and the bottom of the two-part box in question are also painted. At least the outer surface of each two-part box is z. B. primed, especially with a white primer. After printing on its outer surface, each two-part can is held by its respective holder, for. B. on the mandrel wheel z. B. removed by compressed air or by a preferably switchable magnet and fed to at least one processing station downstream of the mandrel wheel, z. B. a painting station for painting the outer surface of each printed two-piece can and / or an edge processing station. The printed two-part cans go through in particular a dryer, for. B. a hot air dryer in order to cure the at least one printing ink applied to its respective lateral surface.

The printing process for printing in particular the respective outer surface of z. B. held on the mandrel wheel hollow bodies, in particular two-part cans, begins with all of the printing inks required for the print image to be printed on the respective outer surface of the hollow body, e.g. B. from the respective printing cliché of the z. B. on the segment wheel employed plate cylinder can be applied to the same by one of the printing blankets arranged on the circumference of the segment wheel. The relevant printing blanket colored with all the necessary printing inks then transfers these printing inks simultaneously during a single rotation of the hollow body to be printed on one of the mandrels of the mandrel wheel around its longitudinal axis to the circumferential surface of this hollow body in a touch contact between the printing blanket and the outer surface of the hollow body to be printed. During the transfer of the printing inks from the blanket to the outer surface of the hollow body, the z. B. held by one of the mandrels of the mandrel wheel to be printed hollow body with a circumferential speed of the same amount as the relevant z. B. arranged on the circumference of the segment wheel printing blanket. The respective circumferential speeds of the hollow body and printing blanket or segment wheel are therefore synchronized with one another, the z. B. held on one of the mandrels of the mandrel wheel to be printed hollow body in particular by a drive means acting on the mandrel in question z. B. from its standstill in particular until reaching the peripheral speed z. B. the segment wheel is accelerated accordingly, the peripheral speed of the mandrel in question of the mandrel wheel, preferably starting from a first contact point of the hollow body to be printed with the printing blanket in question during the rolling of its outer surface on a distance z. B. is synchronized by the first 50 mm of the circumferential length of the blanket with the circumferential speed of the segment wheel. In the preferred embodiment, the segment wheel carrying the printing blanket in question is the z. B. on the respective mandrel of the mandrel wheel circumferential speed to be set. The peripheral speed of the printing forme cylinder carrying the printing form or of the plate cylinder carrying the printing block is or is preferably depending on the peripheral speed, for. B. set the segment wheel. In the preferred embodiment, at least the mandrel wheel and the segment wheel are each individually driven by their own drive and their respective rotational behavior is controlled or regulated by a control unit.

With reference to the device described so far for printing or for decoration in particular of one z. B. cylindrical outer surface having hollow bodies are explained below by way of example various details. 1 shows, in a simplified schematic representation and by way of example, a device for printing or for decorating hollow bodies, in particular each having a preferably cylindrical outer surface 01 , e.g. B. two-part cans 01 , this hollow body 01 with a conveyor sequentially the z. B. as a rotating or at least rotatable feed wheel, in particular as a mandrel wheel 02 trained transport device and held there on this transport device individually on a holder each designed as a mandrel or a spindle. In the following, on the basis of the exemplary embodiment selected for the printing press or the device for printing hollow bodies, it is assumed that this transport device is preferably designed as one about an axis of rotation 41 rotating or at least rotatable mandrel wheel 02 is trained. With the mandrel wheel 02 preferably acts a printing ink-transmitting device, for. B. a about an axis of rotation 34 rotating or at least rotatable segment wheel 03 together, along the or its circumference, one behind the other, several printing blankets 33 are arranged. In association with the segment wheel mentioned as an example 03 are along its circumference several radially on this segment wheel 03 employed or at least adjustable printing forme cylinders 04 , especially plate cylinders 04 provided, on the respective lateral surface of this printing forme cylinder 04 or plate cylinder 04 in each case a printing form, in particular a printing plate, is arranged, this printing plate being designed in particular to carry out a letterpress process. Each of the printing forme cylinders 04 or plate cylinder 04 is used to color its printing form or its printing cliché by means of an inking unit 06 each supplied with a specific ink. In the following it is assumed by way of example that the printing forme cylinder 04 each as a plate cylinder carrying at least one printing block 04 are trained.

Along the circumference of the segment wheel 03 are in the direction of rotation in a row several, z. B. eight, ten or twelve, preferably each other different printing inks printing units each with a plate cylinder 04 and an inking unit 06 arranged, preferably each inking unit 06 is designed as a short inking unit and z. B. only a single inking roller 07 and an anilox roller 08 having ( 2 ). At the circumference of the segment wheel 03 are one behind the other preferably equidistant several, z. B. 12 blankets 33 arranged, with a mandrel wheel having 24 holding devices 02 compared to a segment wheel 03 with 12 segments 32 is set to rotate at half speed. Each of the on the circumference of the segment wheel 03 each on one segment 32 arranged printing blankets 33 is z. B. formed as a metal printing blanket and preferably by a magnetic force on the segment in question 32 of the segment wheel 03 held. The segment wheel 03 preferably has a base body, wherein the several, z. B. twelve segments 32 along the circumference of the base body, for. B. each arranged at a joint, in particular at a distance from one another, or at least can be arranged. The segment wheel 03 is therefore not in one piece in the preferred embodiment, with already molded segments 32 formed, but the segments 32 each form a separate machine element that can be separated from the base body and are attached to the base body, for. B. arranged interchangeably by loosening at least one connecting element.

In the preferred embodiment, each is the one on the segment wheel 03 to be arranged printing blankets 33 each on a preferably flat tabular metal support with a material thickness of z. B. 0.2 mm cohesively, in particular applied by an adhesive. The respective preferably magnetizable metal carrier is then together with the printing blanket arranged on it 33 on one of the segments 32 on the circumference of the segment wheel 03 z. B. by at least one there on the circumference for each blanket 33 or its carrier provided holding magnets in particular arranged in the correct position. About the correct positioning of the respective metal support on the relevant segment 32 on the circumference of the segment wheel 03 to support is z. B. on the direction of rotation of the segment wheel 03 leading edge 37 of the respective metal support each have an acute-angled suspension leg 38 provided, this suspension leg 38 with the arrangement of the respective metal support on one of the segments 32 on the circumference of the segment wheel 03 into one on the circumference of this segment wheel 03 parallel to its axis of rotation 34 directed z. B. formed as a groove recess 36 engages and one in the direction of rotation of the segment wheel 03 leading edge 39 the recess in question 36 especially form-fitting to the system comes. The printing blankets 33 are each preferably designed as a rubber blanket. The direction of rotation of the segment wheel carried out during the printing process 03 is in the 1 indicated by an arrow indicating the direction of rotation. The dated around the axis of rotation 41 rotating mandrel wheel 02 each on a mandrel on the segment wheel 03 brought up hollow body 01 are made in the printing process by a primarily radial movement of the mandrel in question individually and one after the other for a short time, ie for a single rotation of the hollow body to be printed 01 to the relevant currently printing blanket 33 pressed on.

2 shows a simplified and schematic embodiment of the device for printing hollow bodies 01 , in which several hollow bodies 01 with a conveyor 74 sequentially a conveyor wheel in the transport direction indicated by an arrow 76 and from there the mandrel wheel 02 and then the segment wheel 03 are fed. The conveyor wheel 76 and the mandrel wheel 02 form a device for sequential feeding of the hollow bodies 01 to the circumference of the segment wheel 03 . At the circumference of the conveyor wheel 76 are several, e.g. B. eight or ten drivers and on the circumference of the mandrel wheel 02 are several, e.g. B. 24 or 36 holding devices each for receiving one in each case in cooperation with the segment wheel 03 hollow body to be printed 01 arranged. The carriers of the conveyor wheel 76 are z. B. formed by recesses on its circumference, with each recess always exactly a single hollow body at a specific point in time 01 record and during the rotation of the feed wheel 76 can convey. The inclusion of a hollow body 01 into the relevant recess of the feed wheel 76 is z. B. by one in the periphery of the feed wheel 76 arranged blown air device 98 supported, depending on an angular position of the conveyor wheel 76 from the blown air device 98 at least one of the hollow bodies in question 01 puffing blast of air in the direction of the feed wheel 76 is triggered. The conveyor wheel 76 is designed in an advantageous embodiment as a star wheel with several drivers each in the form of pointed prongs, with a hollow body received in a space between adjacent prongs 01 is conveyed during the rotation of the star wheel.

The mandrel wheel 02 and the conveyor wheel 76 each have one from the drive 13th of the segment wheel 03 separate own each z. B. designed as a motor drive 77 ; 78 on, with the drive 13th of the segment wheel 03 and the drive 77 of the mandrel wheel 02 and the drive 78 of the conveyor wheel 76 through a common data bus 79 are connected to each other in terms of data technology. This the drives 13th ; 77 ; 78 connecting preferably digitally designed data bus 79 is z. B. formed in a ring topology or in a star topology. One controls the data bus 79 connected, e.g. B. designed as a central machine control unit 82 by means of each via the common data bus 79 transported control data at least both the drive 78 of the conveyor wheel 76 as well as the drive 77 of the mandrel wheel 02 , preferably also the drive 13th of the segment wheel 03 and others, especially all of them, to this data bus 79 connected drives. In a decorator with several over a common data bus 79 connected individual drives is z. B. the drive 77 of the mandrel wheel 02 or the drive 13th of the segment wheel 03 each defined as a master, so that the other drives each align as slaves in their respective rotational behavior according to the previously defined master. By the drive 78 of the conveyor wheel 76 and the drive 77 of the mandrel wheel 02 controlling control data are at least a pair of discrete angular positions φ1 ; φ2 , which consists of one of one of the drivers on the circumference of the conveyor wheel 76 assumed or to be assumed first angular position φ1 and from one of one of the holding devices on the periphery of the mandrel wheel 02 assumed or to be assumed second angular position φ2 each on one of the respective hollow bodies 01 from the conveyor wheel 76 to the mandrel wheel 02 transfer position 81 exists, in each case with reference to this transfer position 81 fixed to each other. That means that the relevant pair of angular positions φ1 ; φ2 forming angular positions φ1 ; φ2 during a respective rotation of the conveyor wheel 76 and mandrel wheel 02 each with reference to the transfer position 81 remain unchanged, preferably for all drivers of the conveyor wheel 76 and all holding devices on the circumference of the mandrel wheel 02 at least during a production of the device for printing the hollow body 01 in each case on the respective hollow body 01 from the conveyor wheel 76 to the mandrel wheel 02 transfer position 81 are to be positioned. The over the data bus 79 to the respective drive 13th ; 77 ; 78 The transmitted control data preferably include at least one angular position to be assumed by its shaft and / or the respective speed of the shaft of the relevant drive 13th ; 77 ; 78 . This control data practice with reference to the decorator in question so z. B. the function of a virtual master axis. The control data transported via the virtual master axis are a reference variable for the axes to be coordinated with this data bus 79 connected drives 13th ; 77 ; 78 . The control data forming a position value of the virtual master axis, ie the master value of the virtual master axis, is used for each by the drives 13th ; 77 ; 78 A position setpoint is calculated for the given following axis. At least the drive 77 of the mandrel wheel 02 and the drive 13th of the segment wheel 03 and possibly also the drive 78 of the conveyor wheel 76 are each considered a electrical, from the control unit 82 position-regulated and / or motorized direct drive set in their respective speed. The drive 13th of the segment wheel 03 is z. B. designed as a torque motor. In an advantageous embodiment, at least the respective drives 13th ; 77 ; 78 from the conveyor wheel 76 , Mandrel wheel 02 and segment wheel 03 one each to the data bus 79 connected own drive controller 83 and its own power unit 84 assigned.

The z. B. by means of vacuum suction one after the other individually on one of the mandrels of the mandrel wheel 02 turned up and then held by the relevant mandrel hollow body 01 are in addition to the rotation of the mandrel wheel 02 rotates by an independently executed or at least executable rotation by the mandrel, because each mandrel can be rotated about its respective longitudinal axis and in particular is set or at least adjustable to a certain circumferential speed. In a preferred embodiment, at least one hollow body is used 01 , preferably several are each on one of the mandrels of the mandrel wheel 02 held hollow body 01 before their respective printing by means of at least one of the on the circumference of the segment wheel 03 arranged printing blankets 33 z. B. by a particular in the periphery of the mandrel wheel 02 arranged, preferably endlessly revolving with these hollow bodies 01 Accelerating band in contact with each other 86 , ie each set in rotation by friction and adjusted to the peripheral speed required for the printing process. This acceleration band 86 preferably has its own of the drives 13th ; 77 ; 78 of the conveyor wheel 76 , the mandrel wheel 02 and / or the segment wheel 03 separate, but z. B. also to the data bus 79 connected drive 87 on, the peripheral speed of the acceleration belt 86 is optionally adjustable. The peripheral speed of the acceleration belt 86 is thus by its drive 87 z. B. for each hollow body 01 individually adjustable and / or changeable depending on the requirements of the printing process. Also the drive 87 of the acceleration belt 86 is z. B. a dedicated drive controller 83 and its own power unit 84 assigned.

At least one in the periphery of the mandrel wheel 02 after printing the hollow body 01 arranged processing station is z. B. as a painting device 88 for painting the outer surface of each printed hollow body 01 and / or designed as an edge processing station in particular in the case of two-part cans. As a painting facility 88 trained processing station has one on the lateral surface of at least one of the mandrel wheel 02 held printed hollow body 01 employed or at least adjustable paint application roller 89 on. The paint application roller 89 the painting facility 88 is preferably of its own drive 91 driven in rotation, one on the mandrel wheel 02 held hollow body 01 after printing by means of at least one of the on the circumference of the segment wheel 03 arranged printing blankets 33 by the drive 91 driven paint application roller 89 set in rotation by means of friction and z. B. is set to a certain peripheral speed depending on the requirements of the painting process. In particular, is the circumferential speed of the hollow body 01 through the drive 91 the paint application roller 89 independent of the drives 13th ; 77 ; 78 of the conveyor wheel 76 , the mandrel wheel 02 and / or the segment wheel 03 set or at least adjustable. The drive is also advantageous 91 the paint application roller 89 its own drive controller 83 and its own power unit 84 assigned.

In the embodiment according to the invention, the mandrel wheel is in the periphery 02 , e.g. B. at its lower edge in the transport direction of the hollow body 01 especially after the paint application roller 89 the painting facility 88 arranged a mechanical friction brake, wherein a friction body 96 this friction brake at least one on one of the holding devices of the mandrel wheel 02 held rotating hollow body 01 is arranged to be braked by friction. The friction body 96 the friction brake is relative to one of the holding devices of the mandrel wheel 02 held rotating hollow body 01 moves, with the movement of the friction body 96 the friction brake to the outer surface of the hollow body 01 has a tangential velocity component. In a preferred embodiment, the friction body is 96 the friction brake as one of a drive roller 97 driven revolving braking belt acting on at least one of the holding devices 96 is formed, wherein the braking band 96 at least one on one of the holding devices of the mandrel wheel 02 held rotating hollow body 01 by acting on at least one of the holding devices of the mandrel wheel 02 is arranged to be braked by friction. The braking tape 96 is preferably arranged circumferentially on deflection rollers and through the drive roller 97 driven in terms of its orbital motion. At least one on the mandrel wheel 02 held rotating hollow body 01 that of the friction body 96 or from the braking belt 96 is braked by friction, is according to this braking process after its printing by at least one of the circumference of the segment wheel 03 arranged printing blankets 33 set to a peripheral speed required for further transport. This peripheral speed of the hollow body 01 is independent of the drives 13th ; 77 ; 78 ; 91 of the conveyor wheel 76 and / or the mandrel wheel 02 and / or the segment wheel 03 and / or the paint application roller 89 the painting facility 88 set or at least adjustable. The z. B. as a braking band 96 trained friction body 96 The friction brake enables an optimal braking process for the rotating hollow body which is about to be passed on 01 . This braking process is particularly important at high speeds of rotation of the mandrels in connection with mandrels for large-volume hollow bodies 01 with a high mass moment of inertia is advantageous or necessary. The braking process increases operational safety when the hollow bodies are transferred 01 from the mandrel wheel 02 significantly increased to another transport device.

In the transport direction of the hollow body 01 is a z. B. as a rotatable transfer disk 92 trained conveyor to take over the mandrel wheel 02 held, by means of at least one of the circumference of the segment wheel 03 arranged printing blankets 33 printed hollow body and optionally lacquered on its outer surface 01 intended. A peripheral speed of the transfer disk 92 is either by its own drive 73 ( 5 ) or z. B. depending on the rotation of the feed wheel 76 z. B. with the drive 78 this conveyor wheel 76 z. B. set by means of a belt drive or at least adjustable. In the latter case it is the drive 73 the transfer disc 92 z. B. with the drive 78 of the conveyor wheel 76 z. B. mechanically or electrically, in particular coupled in terms of control technology. In the aforementioned alternative embodiment, the shaft is the transfer disk 92 from one of its own, ie from the other drives 13th ; 77 ; 78 ; 87 ; 91 separate drive 73 driven in rotation, this drive 73 is preferably designed as a motor.

In the transport direction of the hollow body 01 is after the transfer disc 92 preferably another conveyor 93 for conveying printed and / or lacquered hollow bodies 01 z. B. provided in a dryer, this conveyor 93 z. B. as a circulating transport chain 93 with several, e.g. B. twenty sensors each for receiving one of the hollow bodies to be conveyed 01 is formed and preferably its own drive 94 , in particular has a chain drive, this drive 94 preferably at least with the drives 13th ; 77 ; 78 of segment wheel 03 , Mandrel wheel 02 and conveyor wheel 76 connecting data bus 79 connected is. Also the drive 94 this funding facility 93 is z. B. a dedicated drive controller 83 and its own power unit 84 assigned.

According to the drive concept described here by way of example for a decorator, at least the drives 13th ; 77 ; 78 of segment wheel 03 , Mandrel wheel 02 and conveyor wheel 76 each designed as a single drive and via a common data bus 79 connected with each other. Advantageously, in the device for printing hollow bodies 01 others to the common data bus 79 connected individual drives provided, e.g. B. the drive 87 for the acceleration belt 86 and / or the drive 91 for the paint application roller 89 the painting facility 88 and / or your own drive, if applicable 73 for the transfer disc 92 and / or the drive 94 for the transport chain 93 . All of these drives 13th ; 73 ; 77 ; 78 ; 87 ; 91 ; 94 are from one to the common data bus 79 connected, e.g. B. designed as a central machine control control unit 82 by means of this common data bus 79 controlled controlled data transported, these control data preferably at least the respective speed of the shaft of the drive concerned 13th ; 73 ; 77 ; 78 ; 87 ; 91 ; 94 and at least one angular position to be assumed by its shaft. The control unit designed as a central machine control 82 is z. B. designed as a control station belonging to the decorator in question, with the for the drives in question 13th ; 73 ; 77 ; 78 ; 87 ; 91 ; 94 have the required control data set at this control station.

In a preferred embodiment, the conveyor wheel 76 , the mandrel wheel 02 , the segment wheel 03 and the transfer disc 92 by controlling their respective drives 13th ; 77 ; 78 by means of the via the common data bus 79 transported control data are synchronized with one another in such a way that at a certain point in time at which the conveyor wheel 76 a hollow body 01 to the mandrel wheel 02 hands over, another already at the mandrel wheel 02 arranged hollow body 01 straight through one on the segment wheel 03 arranged printing blanket 33 is printed and another already printed hollow body 01 from the mandrel wheel 02 to the transfer disc 92 is passed.

One advantage of the drive concept that uses individual drives for a decorator instead of a central drive is the very high positioning accuracy, which is particularly important for the mandrel wheel 02 and the segment wheel 03 is achievable, whereby on the lateral surface of the hollow body 01 a sharp print is made possible. The separate drive 87 for the acceleration belt 86 allows individual control of the rotation of each one on a mandrel of the mandrel wheel 02 arranged hollow body 01 , with an advance or lag of the rotation of the hollow body in question, if necessary 01 each with reference to one on the circumference of the segment wheel 03 arranged printing blanket 33 is set or at least adjustable. The separate drive 94 for the transport chain 93 enables an exact counting of the transported hollow bodies 01 and / or a targeted discharge of faulty hollow bodies 01 . The separate drives 73 ; 77 ; 78 ; 94 for those directly involved in the transport Hollow body 01 participating institutions, ie in particular conveyor wheel 76 , Mandrel wheel 02 , Transfer disk 92 and / or transport chain 93 offer the advantage that the time required for the various transfer actions to transfer the relevant hollow body 01 can be adjusted from one conveying element to the other without mechanical intervention on the respective drive elements.

A motor is also advantageous 11 of the plate cylinder 04 and an engine 12th the anilox roller 08 of the respective with the segment wheel 03 cooperating inking system 06 each with its own drive controller 83 and its own power unit 84 assigned. With the electronic control unit described above 82 is also the engine in question 11 of the plate cylinder 04 and the engine in question 12th the anilox roller 08 each e.g. B. regulated or at least controllable in its angular position and / or in its respective speed. The respective drive controller 83 and the associated power unit 84 are preferably via the data bus 79 with the control unit designed as a central machine control 82 connected, this central control unit 82 z. B. is designed as the control center belonging to the decorator in question.

In the preferred embodiment, several, preferably all, are connected to the common data bus 79 connected drives or motors 11 ; 12th ; 13th ; 77 ; 78 ; 87 ; 91 ; 94 each individually and independently controlled or at least controllable. It is preferably provided that for the respective motors 11 ; 12th ; 13th ; 77 ; 78 ; 87 ; 91 ; 94 for their respective control in each case at least one family of characteristics z. B. in the central control unit 82 or z. B. in the respective engine 11 ; 12th ; 13th ; 77 ; 78 ; 87 ; 91 ; 94 associated drive controller 83 is stored. To z. B. a production change, in particular a changeover of the machine arrangement to a production of hollow bodies 01 other format, e.g. B. to facilitate cans with a shorter or longer can height and / or a different can diameter compared to the current production, it is advantageous that the respective motors 11 ; 12th ; 13th ; 77 ; 78 ; 87 ; 91 ; 94 are controlled or at least controllable in accordance with coordinated characteristic curves. As a result, the respective motors are or are each individually and independently controlled or at least controllable 11 ; 12th ; 13th ; 77 ; 78 ; 87 ; 91 ; 94 depending on the respective, previously in particular on the central control unit 82 , ie in particular the production set or selected at the control station is synchronized with one another. On the other hand, it is also possible with a drive concept each using individual drives, e.g. B. for the purposes of maintenance or repair or setting up or upgrading a first subset of each of one of the engines 11 ; 12th ; 13th ; 77 ; 78 ; 87 ; 91 ; 94 drivable assemblies 02 ; 03 ; 04 ; 08 ; 76 ; 86 ; 89 ; 92 ; 93 , especially a single one from one of the engines 11 ; 12th ; 13th ; 77 ; 78 ; 87 ; 91 ; 94 driven assembly 02 ; 03 ; 04 ; 08 ; 76 ; 86 ; 89 ; 92 ; 93 individually, ie selectively to be put into operation, so that they each execute or execute a rotational movement while at least one other assembly 02 ; 03 ; 04 ; 08 ; 76 ; 86 ; 89 ; 92 ; 93 , ie a second subset of each from one of the engines 11 ; 12th ; 13th ; 77 ; 78 ; 87 ; 91 ; 94 drivable assemblies 02 ; 03 ; 04 ; 08 ; 76 ; 86 ; 89 ; 92 ; 93 always remains at a standstill.

In the embodiment according to the invention, the movement of the friction body which has the tangential speed component is 96 the friction brake with the rotational movement of the transfer disc 92 mechanically coupled. In the preferred embodiment this means that the braking band 96 from the transfer disc 92 is driven by the fact that the drive roller 97 of the braking band 96 with one from the drive 73 rotatively driven shaft 42 the transfer disc 92 is mechanically coupled. This coupling is in the 2 indicated by a dashed line. The mechanical coupling of the movement of the friction body 96 the friction brake with the rotational movement of the transfer disc 92 is advantageous because the hollow body is at this point in the transport path 01 the tangential speed component in the movement of the friction body 96 the friction brake for trouble-free operation of the device for printing the respective outer surface of hollow bodies 01 does not necessarily have to be adhered to exactly and therefore a dynamic speed correction does not necessarily have to be carried out. At this point in the transport path of the hollow body 01 can therefore easily find a more economical solution than providing a further individual drive for the friction body 96 the friction brake can be used.

An embodiment for the mechanical coupling of the movement of the friction body 96 the friction brake with the rotational movement of the transfer disc 92 is in the 3 to 5 shown by way of example, where 3 shows a front of this arrangement and 4th a rear view of this arrangement. 5 shows an example of a top view of this arrangement. In this arrangement, there is on the shaft 42 the transfer disc 92 additionally a belt pulley 43 arranged, this pulley 43 on the wave 42 the transfer disc 92 is arranged axially displaceable. The pulley 43 drives via a traction device, e.g. B. a self-contained drive belt 44 who have favourited the drive roller 97 of the braking band 96 on, with the drive belt 44 z. B. on a pinion 53 is deflected, the drive roller 97 of the braking band 96 and that the drive belt 44 deflecting pinions 53 on the same wave 52 Are rotatably arranged. The preferably a self-contained braking band 96 is via at least one pulley 46 diverted. The drive belt 44 can be used as a non-positive traction drive z. B. in the form of a flat belt or a round belt or a V-belt or as a positive traction drive z. B. in the form of a toothed belt or a chain. With the pulley 43 and the drive belt 44 takes place in relation to the speed of rotation of the braking belt 96 usually a faster translation. The pulley 43 and the drive belt 44 possibly together with the drive belt 44 deflecting pinion 53 are in a first vertical plane E1 arranged and the drive roller 97 , the braking tape 96 and the at least one pulley 46 are in a second vertical plane E2 arranged, the first vertical plane E1 and the second vertical plane E2 are arranged parallel to each other. The drive belt 44 is z. B. by a preferably spring-loaded belt tensioner 47 stretched, whereas the braking band 96 by a z. B. with the pulley 46 cooperating clamping device 48 is tensioned, the mechanical tension of the braking band 96 at the z. B. on a lever 49 swiveling clamping device 48 is set or, in particular, is preferably variably adjustable by remote adjustment. The adjustment of the mechanical tension of the braking band 96 takes place through a z. B. pneumatic actuator 51 . The correct mechanical tension of the braking band 96 is z. B. monitored by sensors, whereby a possible break of the braking band 96 is detectable.

The pulley 43 is in the same way as the transfer disc 92 on the wave 42 arranged axially displaceable. The axial displacement of the pulley 43 takes place z. B. via a threaded guide, the pulley 43 at its axial position to be set z. B. is fixed by means of at least one clamping ring or is at least fixable there. The transfer disc 92 must for a trouble-free takeover of the hollow body 01 depending on their size, ie on their axial length 101 , in their axial position relative to the position of the mandrel wheel 02 adjusted, ie the axial position of the transfer disc 92 depends on the axial length 101 the hollow body 01 , ie e.g. the can height 101 the one from the mandrel wheel 02 to the transfer disc 92 cans to be transferred, especially two-part cans 01 each a different one. The pulley 43 is in a preferred embodiment with an axial displacement of the transfer disk 92 based on the axial length 101 the hollow body 01 in the first production to the axial length 101 the hollow body 01 in the case of a second production following the first production, by a travel of the same amount Δx on the wave 42 axially displaceable in the same direction. This facilitates z. B. a production change, in particular a changeover of the machine arrangement to a production, in particular a printing process of hollow bodies 01 other format, e.g. B. on cans with a shorter or longer can height compared to the current production 101 . Therefore the amount and the direction of the travel Δx the axial displacement of the transfer disk 92 and pulley 43 on the axial length 101 the hollow body 01 dependent. The axial displacement of the pulley 43 and transfer disc 92 therefore takes place when there is a change in the axial length 101 the hollow body 01 compared to a previous printing process. In the 5 is the second production in which hollow bodies 01 with a greater axial length compared to the previous first production 101 from the mandrel wheel 02 to the transfer disc 92 are transferred, shown in dashed lines.

List of reference symbols

01

Hollow body; Two-part box

02

Mandrel wheel

03

Segment wheel

04

Printing form cylinder; Plate cylinder

05

-

06

Inking unit

07

Inking roller

08

Anilox roller

09

-

10

-

11

Engine ( 04 )

12th

Engine ( 08 )

13th

Drive; Engine ( 03 )

14th

-

15th

-

30th

-

31

-

32

Segment ( 03 )

33

Printing blanket

34

Axis of rotation ( 03 )

35

-

36

Recess

37

Edge ( 33 )

38

Suspension leg ( 33 )

39

Edge ( 36 )

40

-

41

Axis of rotation ( 02 )

42

wave

43

Pulley

44

Drive belt

45

-

46

Pulley

47

Belt tensioner

48

Clamping device

49

lever

50

-

51

Adjusting device

52

wave

53

pinion

54

-

55

-

70

-

71

-

72

-

73

Drive ( 92 )

74

Conveyor

75

-

76

Conveyor wheel

77

Drive ( 02 )

78

Drive ( 76 ; 92 )

79

Data bus

80

-

81

Transfer position

82

Control unit

83

Drive controller

84

Power section

85

-

86

Acceleration band

87

Drive ( 86 )

88

Painting facility

89

Paint application roller

90

-

91

Drive ( 89 )

92

Transfer disc

93

Conveyor; Transport chain

94

Drive ( 93 )

95

-

96

Friction body; Deceleration band

97

Drive roller

98

Blown air device

E1

first vertical plane

E2

second vertical plane

101

Length ( 01 ); Can height

φ1

Angular position, first

φ2

Angular position, second

Δx

Travel

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• WO 2012/148576 A1 [0002, 0007]
• US 4741266 A [0008]
• WO 2018/013465 A1 [0009]
• DE 102018201033 B3 [0010]
• EP 1165318 A1 [0020]
• WO 2011/156052 A1 [0020]
• EP 1132207 A1 [0020]

Claims (11)

Device for printing the respective outer surface of hollow bodies (01), with a mandrel wheel (02) having several holding devices, a hollow body (01) can be arranged on each of these holding devices, a mechanical friction brake being arranged in the periphery of the mandrel wheel (02) , wherein a friction body (96) of the friction brake is arranged to brake at least one rotating hollow body (01) held on one of the holding devices of the mandrel wheel (02) by friction, wherein the friction body (96) of the friction brake is arranged relative to one of the holding devices of the mandrel wheel (02 ) held hollow body (01) is moved, the movement of the friction body (96) of the friction brake to the outer surface of the hollow body (01) having a tangential speed component, wherein in the transport direction of the hollow body (01) after the mandrel wheel (02) a rotating or at least rotatable Transfer disk (92) held on the mandrel wheel (02) to take over en hollow bodies (01), characterized in that the movement of the friction body (96) of the friction brake having the tangential speed component is mechanically coupled to the rotational movement of the transfer disk (92). Device according to Claim 1 , characterized in that the holding devices of the mandrel wheel (02) are each designed in the form of a mandrel or a spindle protruding from an end face of the mandrel wheel (02), with a longitudinal axis of each mandrel or each spindle directed parallel to the axis of the mandrel wheel (02) is, wherein one of the hollow bodies (01) is held or at least can be held by each of the holding devices, each mandrel or each spindle being arranged or at least rotatable about its respective longitudinal axis. Device according to Claim 2 , characterized in that each of the mandrels or spindles of the friction body (96) of the friction brake is set to a certain circumferential speed by means of friction or is at least adjustable in such a way that each hollow body (01) held by one of the mandrels or by one of the spindles in addition to the rotation of the Mandrel wheel (02) is rotatably arranged or at least rotatable by a rotation performed or at least executable independently by the relevant mandrel or the relevant spindle. Device according to Claim 1 or 2 or 3 , characterized in that the friction body (96) of the friction brake is arranged in the transport direction of the hollow body (01) after a paint application roller (89) of a painting device (88). Device according to Claim 1 or 2 or 3 or 4th , characterized in that the friction body (96) of the friction brake is designed as a revolving braking belt (96) driven by a drive roller (97) and acting on at least one of the holding devices of the mandrel wheel (02), the braking belt (96) from the transfer disk ( 92) is driven in that the drive roller (97) of the braking belt (96) is mechanically coupled to a shaft (42) of the transfer disk (92). Device according to Claim 5 , characterized in that a belt wheel (43) is also arranged on the shaft (42) of the transfer disk (92), this belt wheel (43) driving the drive roller (97) of the braking belt (96) by means of a self-contained drive belt (44) is arranged. Device according to Claim 6 , characterized in that the transfer disk (92) and the belt wheel (43) are each arranged axially displaceably on the shaft (42) of the transfer disk (92), the transfer disk (92) and the belt wheel (43) on this shaft (42 ) are each axially displaceable by an amount of the same amount of travel (Δx) on the shaft (42) in the same direction, the amount and direction of the travel (Δx) of the axial displacement of the transfer disk (92) and belt wheel (43) of one in comparison the axial length (101) of the hollow bodies (01) changed in relation to a previous printing process are dependent. Device according to Claim 6 or 7th , characterized in that the belt pulley (43) and the drive belt (44) are arranged in a first vertical plane (E1) and that the drive roller (97), the braking belt (96) and at least one deflecting pulley ( 46) are arranged in a second vertical plane (E2), the first vertical plane (E1) and the second vertical plane (E2) being arranged parallel to one another. Device according to Claim 6 or 7th or 8th , characterized in that the drive belt (44) is tensioned by a spring-loaded belt tensioner (47) and / or that the braking belt (96) is tensioned by a tensioning device (48), the tension of the braking belt (96) on the tensioning device (48 ) or can be variably adjusted by remote adjustment. Device according to Claim 9 , characterized in that a setting of the tension of the braking band (96) is monitored by sensors and / or that a possible breakage of this braking band (96) is monitored. Device according to Claim 1 or 2 or 3 or 4th or 5 or 6th or 7th or 8th or 9 or 10 , characterized in that the shaft (42) of the transfer disk (92) is driven by its own drive (73) independent of the drive (77) of the mandrel wheel (02).

Images