EP3245071A1 - Erfassungseinheit sowie vorrichtung und verfahren zur bedruckung von behältern - Google Patents
Erfassungseinheit sowie vorrichtung und verfahren zur bedruckung von behälternInfo
- Publication number
- EP3245071A1 EP3245071A1 EP15816794.0A EP15816794A EP3245071A1 EP 3245071 A1 EP3245071 A1 EP 3245071A1 EP 15816794 A EP15816794 A EP 15816794A EP 3245071 A1 EP3245071 A1 EP 3245071A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- container
- unit
- printing
- holding
- centering
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
- B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
- B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
- B41J3/40733—Printing on cylindrical or rotationally symmetrical objects, e. g. on bottles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/40—Printing on bodies of particular shapes, e.g. golf balls, candles, wine corks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/0082—Digital printing on bodies of particular shapes
- B41M5/0088—Digital printing on bodies of particular shapes by ink-jet printing
Definitions
- the invention relates to a detection unit according to the preamble of claim 1, to an apparatus for printing containers according to the preamble of claim 13 and to a method of printing containers according to the preamble of claim 18.
- Devices for printing containers are known in different designs.
- printing systems for printing on containers using digital ink jet or ink jet printing heads are known.
- printing systems or printing machines eg DE10 2007 050 490 A1
- a plurality of treatment or printing stations for receiving a respective container to be printed are formed on a transport element driven circumferentially about at least one vertical axis, on which the containers are used be printed by electronically controllable according to the inkjet or ink-jet principle working digital printheads.
- From the document DE 10 201 1 1 12 106 B3 a device for printing on containers has become known, which consists of several directly in the transport direction adjoining transport elements, wherein at least some of the transport elements act as the imprint causing treatment units.
- the publications DE 10 2013 208 061 A1 and DE 20 2013 004 057 IM disclose devices for printing on containers in which an orientation of the container takes place before the printing. Furthermore, the document DE 199 27 668 A1 discloses a method and a device for aligning a container.
- a problem with known printing devices is that so far no accurate printing of a container with respect to an existing container on the container feature, such as an embossing, a seam, a container decoration or a compensation area for hot filling (so-called hotfill panel) could be done, which optical disadvantages at the printed container result.
- the invention relates to a detection unit.
- the detection unit is intended for use in a device for printing on containers.
- the detection unit has at least one image recording device for detecting an optical feature of a container.
- This image recording device is preferably a camera, in particular a line scan camera, by means of which image information of a container to be printed can be obtained prior to its printing in order to detect a predefined container feature.
- the detection unit also has a holding and centering unit for holding a container, or means for holding and re-releasing holding and centering units.
- the container held on a holding and centering unit is rotatably drivable about its container vertical axis in order to be able to move the container relative to the image recording device.
- the holding and centering unit or the means for holding and re-releasing the holding and centering units are mechanically connected via a housing or other support structure of the detection unit with the image pickup device, so that no or only negligible relative movements between the image pickup device and the container fixing holding and centering occur.
- the detection unit has a sensor unit or an interface for coupling to a sensor unit.
- the sensor unit can be part of the detection unit or can be provided on the holding and centering unit that can be detachably connected to the detection unit.
- the sensor unit is for
- the coding can in particular be part of an absolute encoder, by means of which the angular position of a part of the holding and centering unit rotating with the container, referred to below as the secondary part, can be detected.
- a computer unit is provided in the detection unit, which is connected to the image recording device and the sensor unit at least temporarily to exchange information.
- the computer unit is designed to determine an alignment quantity based on the coding provided on the holding and centering unit and the detected optical characteristic of the container.
- the detection unit has communication means for passing on the alignment variable to at least one container pressure device in order to be able to transmit the orientation variable to the container pressure device.
- the detection unit has the decisive advantage that containers can be printed aligned to recognized container features in a subsequent printing device and thus a visually appealing container printing is possible.
- the detection unit is provided on a circulating around a vertical machine axis transport element.
- the optically detectable container is moved together with the image pickup device by the transport element.
- the detection unit is a fully interchangeable detection module.
- the detection unit has a housing or another
- Support structure in / on which all necessary for the operation of the detection unit components are arranged.
- These are in particular the image recording device, the computer unit, the communication means or communication interfaces and the holding and centering unit or the means for holding and releasing the holding and centering unit.
- a lighting unit for illuminating the area to be recorded or a memory unit for storing information about which container features are to be detected may be provided in the detection unit.
- the detection module is preferably equipped with a quick change mechanism, so that the detection module can be replaced without or substantially without a tool insert.
- a first part of an electrical connector is provided which cooperates with a provided on a transport element second part of an electrical connector so that when attaching the detection module to the transport element, ie without additional mechanical Working, an electrical connection or a data connection between the detection module and the other components of the container treatment device are produced.
- the computer unit is designed to determine an angular difference between a reference mark and the detected optical feature of the container.
- the reference mark may, for example, be a reference mark fixed independently of the rotational position of the container or of the rotatable secondary part of the holding and centering device, with respect to which the rotational position or rotational position of a container feature to be observed in the printing is indicated by an angular difference.
- the printing of the container is usually carried out starting or in relation to this reference mark.
- the container is driven based on the coding controlled by a rotary drive.
- a motor drive can be provided, by means of which a rotatably mounted in the holding and centering unit, connected to the container secondary part is rotatably driven.
- the motor drive can be in particular a direct drive.
- the image recording device is designed to record image information of at least a partial region of the container circumference, preferably of the entire container circumference, by rotation of the container relative to the image recording device.
- a full-circumference image for example, taking a 360 ° rotation
- a pre-alignment of the container can take place already before the detection unit on the transport path of the container, for example by at least one further detection device and rotating the container such that the container feature used for alignment at a desired location or in a defined Angular range comes to rest. This time can be saved in the detection of the container feature on the basis of an alignment to be saved.
- means for storing information regarding a sought-after container feature are provided in the detection unit.
- a memory unit may be provided in the detection unit, in which information regarding the container characteristics to be detected is stored.
- the computer unit is designed to evaluate the image information recorded by the image recording device and to compare this recorded image information with the stored information regarding a searched container feature. After the detection of the optical characteristics of the container, a comparison between the information stored in the memory unit and the image information acquired by the image recording device is carried out by means of the arithmetic unit. Thus, the subsequent printing of the container based on a predetermined, carried out by the computer unit in the recorded image information to be recognized container feature.
- the computer unit is designed to use a block matching algorithm in the evaluation of the image information and / or the comparison of the image information with the stored information regarding a sought-after container feature.
- a similarity comparison of gray scale distributions between two blocks of the same size, in particular pixel matrices is carried out.
- the arithmetic unit is designed for the parallelized processing of image information, in particular by using a graphics card programming, for calculation on one or more graphics processor units.
- Such a GPU General Purpose Computation on Graphics Processing Unit designates the use of a GPU for computations beyond its original scope, such as calculations for technical or economic simulations, which can dramatically increase the speed of parallel algorithms compared to the main processor.
- the communication with the subsequent container printing device takes place via wireless or wired communication means.
- the communication means can be any communication means for transmitting data, for example a wireless interface (radio, for example WLAN, Bluetooth etc. or optical interface) or else a wired transmission interface.
- the communication means may be designed for a directed near-field communication.
- the communication means are formed by an infrared interface, by means of which emitted by emitted optical signals (in the infrared range) information is transmitted.
- the detection unit is designed for relaying a holding and centering device aligned with respect to the rotational position of the container to a subsequent container pressure device.
- the detection unit is designed such that the container is rotated prior to transfer to a printing station of the container printing device such that the Container area at which the printing is to begin, opposite to the printhead provided at the printing station (in the case where several printheads are provided, the printhead first causing the printing).
- the time for a rotation of the container to the position at which the printing is to be started can be substantially reduced, which in turn brings advantages for the processing speed.
- the invention relates to an apparatus for printing on containers with a container transport path, on which the containers are moved for treatment in a transport direction from a container inlet to a container outlet.
- the container transport path is formed by a plurality of transport elements that can be driven circumferentially about a vertical machine axis, at which the containers are held, centered and / or controlled, at least one first transport element having a plurality of detection stations for detecting container characteristics and at least one in the transport direction to the first transport element the following second transport element has a plurality of printing stations for printing on the container.
- a detection unit is provided in each case at the detection stations, the detection unit comprising: ⁇ at least one image recording device for detecting an optical image
- a holding and centering unit for holding a container, or means for holding and releasing again holding and centering units, wherein a held on a holding and centering container to the container
- Container vertical axis is driven in rotation
- Centering unit held container is formed by detecting a provided on the holding and centering unit coding
- a computer unit which is connected to the image recording device and the sensor unit.
- the computing unit is for determining an alignment amount based on the at Holding and Zentheratti provided coding and the detected optical feature of the container.
- the detection unit has communication means for passing on the orientation variable to at least one subsequent printing station.
- the printing device has the decisive advantage that containers aligned with recognized container features can be printed in a printing station following the detection station and thus a visually appealing container printing is made possible.
- a transfer of holding and centering units with containers held thereon takes place between the first and second transport elements.
- a unit of a container and a holding and centering unit is transferred between the detection station and the printing station, said unit, in particular the rotational position of the container to the rotating part of the holding and centering unit (secondary part), also during or after the transfer preserved.
- a coding provided on the holding and centering unit, in particular on the secondary part, in the printing station can be used to detect the rotational position of the container.
- the device is designed to determine an orientation variable for each container held on a holding and centering unit and to selectively pass on the orientation variable to a printing station which subsequently performs the printing.
- a printing station which subsequently performs the printing.
- the alignment size is only selectively passed to the printing station, which requires this alignment to align the container for its printing.
- a plurality of second transport elements are provided in each case comprising a plurality of printing stations, the device for determining an orientation variable for each container held on a holding and centering unit and is designed for specific disclosure of Ausrichtificat only to the printing stations, where the printing of the respective container is completed.
- the Ausricht only to those printing stations
- the passing on of the alignment variable between the detection unit and the subsequent printing stations takes place successively by near-field communication, for example by means of an infrared interface.
- the registration quantity is transmitted by the registration unit to the printing station at the moment in which the transfer of the container held on the holding and centering unit takes place.
- the detection unit and the printing station face each other in such a way that a transfer can take place by means of a near-field communication, in particular an infrared interface.
- the invention relates to a method for
- Printing on containers by means of a printing device comprises the following steps: Detection of an optical feature of a container by means of a
- containers are understood to mean all containers, in particular bottles, cans etc.
- the expression “substantially” or “approximately” in the sense of the invention means deviations from the exact value by +/- 10%, preferably by +/- 5% and / or deviations in the form of changes insignificant for the function.
- FIG. 1 shows by way of example a printing device in a perspective representation
- FIG. 2a by way of example a printing device in a schematic plan view
- FIG. 2b shows by way of example and schematically the transport path through a printing device in a schematic plan view
- Fig. 3 by way of example several arranged on a transport element
- FIG. 4 shows by way of example a treatment segment with a holding and centering device arranged thereon in a perspective view
- FIG. 5 shows, by way of example, a detection unit for detecting container characteristics and for providing an orientation variable in a plan view with the upper housing cover removed;
- FIG. 6 shows by way of example a container with a relief-like container feature
- Fig. 7 shows by way of example the position of a container feature zero mark with respect to a reference mark of the holding and centering device.
- the device 1 generally designated by the reference numeral 1 is used to apply equipment, for example in the form of a print or multiple printing on container 2, for example in the form of bottles, either directly on the outer or outer surface of the wall of the container 2 or on there already applied, eg provided with a partial equipment labels.
- the transport path of the packaging means 2 during feeding, when moving through the device 1 and when removing it from the device 1 is indicated schematically in FIGS. 2a and 2b by TW.
- the device 1 consists of several in the transport direction A immediately adjacent machine modules 3.1 - 3.n, in the illustrated embodiment of a total of eight machine modules 3.1 - 3.8, all machine modules 3.1 - 3.8 are each formed by an identical basic unit 4, which is equipped with the functional elements necessary for the specific task of the respective machine module 3.1 - 3.8.
- Each basic unit 4 includes, for example, a drive and control unit accommodated in a module housing 5 and a transport element 6 which is arranged on the upper side of the module housing 5 and can be driven in rotation by the drive and control unit, inter alia, about a vertical machine axis MA of the respective machine module 3.1-3.8
- Transport element 6 is Preferably designed such that at its periphery a plurality of similar treatment units, hereinafter also called treatment segments or treatment modules, are attachable to equip the respective machine module 3.1 - 3.8 for a specific functionality.
- pre-treatment units designed to sterilize the containers etc.
- detection units eg for detecting certain container features, etc.
- printing units eg for printing the containers according to the ink jet principle, etc.
- after-treatment units eg curing units for drying the container
- Each treatment unit has either one of the respective treatment unit associated holding and centering unit 10, which is for holding and centering of the container 2 to be printed during the passage through the printing device
- the treatment unit has means for holding and re-enabling such a holding and centering unit 10, i. at the treatment unit is a receptacle to which a holding and centering unit 10 is releasably fastened.
- the container 2 to be treated is held during the rotation of the respective transport element 6 by the holding and centering unit 10 with respect to the respective treatment unit and transported simultaneously with the treatment in the transport direction A.
- the transport elements 6 of the individual machine modules 3.1 - 3.8 are arranged immediately adjacent to each other and transport in opposite directions, but synchronously driven such that these transport elements 6 in their entirety form a transport device with which the container 2 within the printing device 1 on the in the figure 2b shown repeatedly deflected transport path TW between the container inlet 1 .1 and the container outlet 1 .2 are moved.
- the individual containers 2 are in each case forwarded directly from the transport element 6 of a machine module 3.1-3.7 to the transport element 6 of the machine module 3.2-3.8 following in the direction of transport A.
- the basic function of the individual machine modules 3.1 - 3.8 is, for example, the following:
- the machine module 3.1 forms, inter alia, the inlet module of the printing device 1.
- a pretreatment of the container 2 takes place at least on the packaging area to be printed,
- a plasma or corona treatment which is particularly useful when the application of the multiple pressure in the
- the machine module 3.2 following the machine module 3.1 is equipped, for example, with a plurality of circumferentially arranged detection units in order to detect one or more container features BM as described in more detail below and to be able to subsequently print the containers 2 taking into account these container features BM.
- each color set of color printing is printed, for example in yellow, magenta, cyan and black.
- the machine module 3.7 is e.g. formed as a drying module in which the respective previously generated multiple pressure in a suitable manner, for example by energy input, e.g. is finally dried or cured by heat and / or by UV radiation (Curing).
- the last machine module 3.8 forms the outlet module or the container outlet 1 .2 of the device 1, at which the finished printed containers 2 leave the device 1.
- the machine module 3.8 may preferably also be designed as a drying module. It is understood that in the chain of machine modules 3.1-3.8 further machine modules can be provided (for example an inspection module) or else certain machine modules can be omitted in order to be able to adapt the printing device 1 as required.
- FIG. 2b in particular shows, the containers 2 with the transport elements 7 of the machine modules 3.1 and 3.8 are each moved over an angular range of approximately 90 ° about the vertical machine axis MA of the machine modules 3.1 and 3.8.
- the packaging means 2 are carried along with the respective transport elements 6 over an angular range of 180 ° about the vertical machine axis MA of the machine modules 3.2-3.7. Within this angular range or within this distance of the rotational movement of the respective transport element 6 takes place in particular in the modules 3.1 - 3.7 of the respective module associated process (pretreatment, detecting container position, printing, Curing).
- the machine modules 3.1-3.n have a plurality of treatment units 7 designed as treatment units, each as complete functional units or modules on a rotor driven peripherally around the respective vertical machine axis MA of the respective machine module 3.1 - 3.n are exchangeably mounted.
- the rotor can in this case in particular be continuously circulating or intermittently driven.
- the treatment segments 7 are provided on the circumference of the rotor, preferably in such a way that the treatment segments 7 are cake-like in plan view and adjoin one another in the circumferential direction of the rotor 10 such that the treatment segments 7 of a machine module 3.1 - 3.n form a circular ring form (see Fig. 3).
- the treatment segments 7 form on their relative to the machine axis MA radially outer side each have a recess 7.1, in which the container 2 are at least partially received during treatment, preferably in the region of its container top or container mouth hanging and centering units 10 hanging held, ie oriented with its container vertical axis in the vertical direction and parallel to the machine axis MA.
- the holding and centering units 10 are in turn each held on a support 1 1, which is fixed in the associated lateral grooves 12.
- the carrier 1 1 slidably moved in the grooves 12 or moved, for example, driven by suitable Ant ebsmittel to ensure an adaptation to different container formats.
- the holding and centering units 10, are preferably used for holding and centering a container 2 and also for the controlled turning or pivoting thereof. In particular, by means of the holding and centering units 10 during the treatment or during printing of the containers 2, an alignment and controlled turning or pivoting of the containers 2 about their container vertical axis.
- the primary part 10.1 essentially serves the secure and aligned fastening of the respective holding and centering unit 10 on the treatment segment 7, in particular the support 11 or the receptacle on the treatment segment 7.
- the primary part 10.1 has this u.a. a reference surface 5, whose complementary counterpart in the treatment segment 7 serves as a reference plane or surface for abutment and thus for adjustment relative to treatment means (e.g., camera, printhead, hardener, etc.) provided on the treatment segment 7.
- treatment means e.g., camera, printhead, hardener, etc.
- the function of the secondary part 10.2 is u.a. It is to keep the respective container 2 hanging.
- the secondary part 10.2 is, for example, designed like a claw, in particular as a mechanical and / or pneumatically actuated gripper and / or as a vacuum gripper.
- the required holding force is applied passively to the primary part 10. 1 and actively removed or released in order to increase safety in the event of current or media loss, for example by one or more permanent magnets.
- the secondary part 10.2 comprises the active components, ie in particular all necessary for the alignment and controlled turning or pivoting of the container 2 during the treatment components, including elements that are required for aligning and / or turning the packaging when printing, and / or the elements for supplying compressed air and / or vacuum, etc.
- rotatable or pivotally mounted secondary part 10.2 forms in the illustrated embodiment, the rotor of an electric actuator or angle drive for aligning and controlled turning or pivoting of the container 2 during the treatment.
- the secondary part 10.2 is for this purpose, inter alia, provided with a permanent magnet arrangement 10.3, which has a plurality of permanent magnets.
- the permanent magnet arrangement 10.3, which alternately has magnetic north and south poles in a circumferential direction, cooperates therewith with an electromagnet arrangement provided on the treatment segment 7, in particular on the support 11, which forms the stator of the actuator or of the electromagnetic direct drive.
- a coding is provided which, in cooperation with an incremental sensor provided on the treatment segment 7, forms an encoder system with which the respective random orientation of the primary part 10.1 and thus of the holding and centering unit 10 is detected.
- the alignment and / or controlled rotation of the container 2 in the container treatment is then carried out, for example, taking into account this determined by the encoder system orientation and known from construction or assignment between primary part 10.1 and rotational position of the secondary part 10.2, and only by turning the secondary part 10.2 when the primary part is not rotating 10.1.
- the secondary-part encoder system can in particular be an absolute-coder system, ie an encoder system by means of which the absolute rotational position of the secondary part 10.2 or of the container 2 can be determined.
- FIG. 5 shows a detection unit 20 embodied as a detection module in a higher degree of detail.
- This detection unit 20 may in particular be part of the detection engine module 3.2.
- the detection unit 20 has a housing or at least one support structure, in / on which all functional elements necessary for the function of the detection unit 20 are arranged.
- the detection unit 20 has at least one image recording device 21, by means of which image information can be obtained from a container 2 to be treated.
- the image recording device 21 may be, for example, a digital camera, in particular a digital line scan camera.
- the detection unit 20 has a receptacle 22 for a holding and centering unit 10, as described above in connection with FIGS. 3 and 4.
- a container 2 held on a holding and centering unit 10 can be rotated about its container vertical axis.
- the image recording device 21 can be detected by rotation of the container 2 around its container vertical axis on the container side circumferentially provided container features BM.
- container features BM may in particular be container seams, pre-applied container decorations, embossings (relief-like structures on the container wall) or hot-fill panels (expansion areas in the filling of hot filling media).
- the detection unit 20 may have suitable adaptation means.
- the receptacle 22 can be height-adjustable, ie designed to be movable in the vertical direction.
- the image recording device 21 may be provided movably in the detection unit 20 in order to be able to vary the distance to the container 2 to be detected, or an image recording device 21 with adjustable focusing may be provided, so that an optimal recording of image information of the container 2 to be detected is also possible can be done with changing distance between container 2 and image pickup device 21.
- an illumination device 23 can be provided in the detection unit 20, by means of which a container region facing the detection unit 20 or the image recording device 21 can be illuminated in order to improve the light conditions for the acquisition of image information.
- the detection unit 20 may have a computer unit 24.
- This computer unit 24 is, for example, coupled to the image recording device 21 and is designed to process the image information provided by the image recording device 21.
- the image information obtained by the image pickup device 21 may be modulated, i. be processed separately for each detection unit 20. Due to the distribution of image processing tasks on the individual detection units 20, even at high
- the computer unit 24 is designed in particular for providing an alignment variable.
- This alignment variable can be, for example, angle information, an angular difference or other information enabling an orientation of the container in a desired rotational position, for example coding information used in conjunction with the coding provided on the holding and centering unit 10.
- a communication unit can be provided in the detection unit 20, by means of which alignment information is forwarded to the treatment units (in particular pressure stations) following the detection unit 20 in the transport direction.
- the container 2 After the transfer of a container 2 held on a holding and centering unit 10 to a detection unit 20 of the detection machine module 3.2, during the rotation of the rotor of the detection machine module 3.2 by the Image pickup 21 image information taken from the peripheral side wall of the container 2.
- the container 2 is rotated at least by a full revolution or at least a part of a revolution about the container vertical axis relative to the detection unit 20. This rotation takes place, as described above, by rotation of the secondary part 10.2 of the holding and centering unit 10 relative to the primary part 10.1 held fixed.
- the image data acquired by the image recording device 21 are then transmitted to the computer unit 24.
- This computer unit 24 compares the image information provided by the image pickup device 21 with pattern image information provided in, for example, a storage unit.
- the storage unit can be, for example, a central storage unit provided for all on the acquisition machine module 3.2 or else a decentralized storage unit, ie the storage unit associated with the respective acquisition unit 20.
- the comparison of the image information provided by the image recording device 21 with the pattern image information can be realized, for example, by means of a so-called block matching algorithm.
- An attempt is made to find in a digital data stream, which contains the image data recorded by the image recording device 21, a block of image information that corresponds to or essentially corresponds to the pattern image information.
- a parallelized processing of the image data can take place, for example by means of a graphics card programming.
- the embossing-related image information may be stored as pattern image information, and within the image information provided by the image recording device 21, sub-image information corresponding to this pattern image information may be searched. It is then determined at which rotational position of the container 2 the embossing or the container feature BM has been detected. To be able to specify the rotational position exactly, for example, the beginning of the embossing, the center of the embossing or else the end of the embossing can be determined.
- the exact rotational position can be specified, at which the embossing (or the beginning, the middle or the end of embossing) is.
- the rotational position can for example be defined by an angle information or a coding information used by the respective encoder and stored as a container feature zero mark.
- Container feature zero mark is container-specific and thus applies only to a holding and centering container arrangement.
- the thus determined rotational position can either be forwarded directly to the subsequent container printing device as alignment information or alignment variable, or an orientation variable derived from the determined rotational position can be calculated.
- an encoder system having a reference mark.
- the rotational positioning of the container 2 is offset with a corresponding rotation angle, which corresponds to the angular difference between the reference mark and the container feature zero mark.
- the printing of the container is not started at the reference mark but at the container feature zero mark.
- FIG. 7 shows the image information, acquired by way of example by an image recording device 21, of a container 2 according to FIG.
- the reference mark of the encoder system is located at any point in the development of the container 2, whereas the container feature zero mark at the beginning of embossing "KHS" was set.
- the angle difference ⁇ between the reference mark and the container feature zero mark or a variable derived therefrom can be forwarded to the following container printing device by the detection unit 20, so that the printing of the container 2 is started not aligned with the reference mark but aligned with the container feature zero mark ,
- a targeted transfer of Ausrichthim or the alignment information to the subsequent container printing device in such a way that only the treatment segments 7 and printing stations of the printing executive machine modules 3.3 - 3.6, which print the respective container 2, receive the necessary alignment.
- Information regarding an alignment size for printing a particular container only to a respective treatment segment 7 and a printing station each machine module 3.3 - 3.6 transferred. This is preferably carried out by a successive transfer of information, with a treatment segment 7 of a machine module 3.2 - 3.5 passing the information on to a treatment segment 7 of a machine module 3.3 - 3.6 following in the direction of transport. In other words, a gradual information transfer takes place between two treatment segments 7, the other treatment segments 7 of the respective machine modules 3.2 - 3.6 preferably not receiving the alignment variable or the alignment information.
- the registration unit 20 transmits the alignment variable or the alignment information to a treatment segment 7 (printing station) of the in.
- the transfer of the Ausrichtiere or the alignment information by means of a direct Nahfeldkommunikation, ie by a directed transfer from one treatment segment Transport direction A subsequent machine module 3.2, this treatment segment 7 turn the alignment size or the alignment information to a treatment segment 7 (printing station) of the Machine module 3.3, etc.
- the information transfer is preferably carried out simultaneously with the transfer of the holding and centering unit 10 between 2 adjacent machine modules 3.2 - 3.6, ie at a moment in which the two treatment segments 7 face each other frontally.
- an infrared interface or an alternative transmission method that enables directional message transmission can be used to transmit the alignment variable or the alignment information (eg RFID, Bluetooth, WLAN, etc.).
- the essential advantage of the direct passing of the alignment variable or the alignment information between the individual treatment segments 7 is that the machine network, by means of which the individual machine modules 3.1 - 3.n are interconnected, is not loaded and no time-critical communication between the rotating treatment segments 7 and fixed machine parts has to be done. Thus, a timely transmission of the alignment size or the alignment information can be ensured even at a high processing speed (treated container per unit time).
- the Ausricht standing or the alignment information contributes significantly to the fact that a printed in a multi-color print image has a high quality, as this Ausricht Anlagen or the Ausrichtinformation significantly determines the superposition of the individual partial print images (black, cyan, magenta, yellow).
- this Ausricht or the Ausrichtinformation significantly determines the superposition of the individual partial print images (black, cyan, magenta, yellow).
- a container in the sub-second range with sufficient resolution eg precision pixel about 10 ⁇
- container characteristics determined by comparison with sample image information e.g precision pixel about 10 ⁇
- an alignment or alignment determined passed to the following in the direction of transport A treatment segments 7 and based on Alignment or the alignment information to be aligned.
- the processing speed increasing mechanisms used or facilities are provided:
- the registration unit 20 can preferably pre-align with the subsequent printing station so that after the transfer Holding and centering unit 10 of the detection unit 20 to the printing station of the container 2 at least substantially already assumes a position relative to the print head, in which the printing has to begin, ie that only a slight twisting of the container 2 has to take place around its container vertical axis.
- the printing of the container 2 can take place directly or almost immediately after the transfer of the holding and centering unit 10 with the container 2 provided thereon to the printing station.
- the encoder system used on the holding and centering unit and 10 can be an absolute encoder.
- the absolute rotational position can be determined directly.
- the desired rotational position can thus be approached on the shortest path.
- a pre-alignment of the container 2 can take place on the transport path TW before the transfer to the acquisition machine module 3.2.
- the advance direction of the container 2 can in particular be accomplished in such a way that the container feature, in relation to which the printing of the container 2 is to take place, after the transfer of the container 2 to a detection unit 20 of the acquisition machine module 3.2 of the image pickup device 21 comes to rest. It can thereby be achieved that the container 2 only has to be rotated by a limited angular range ( ⁇ 360 °, preferably ⁇ 180 °).
- the container 2 in front of the detection machine module 3.2 is a detection device 30,
- an optical detection device in particular a camera provided, by means of which the rotational position of a container feature can be detected.
- a plurality of detection devices 30 may be provided to accommodate image information of the container 2 from two different spatial directions.
- the at least one detection device 30 may be provided fixedly on the transport path TW. After detecting the rotational position of the container feature BM, taking into account the further transport path on which a further pivoting of the container 2 can take place about the container vertical axis, the container 2 is rotated and preceded so that the container feature BM after the transfer of the container 2 at a detection unit 20 of the detection engine module 3.2 of the image pickup device 21 comes to lie facing.
- the container 2 in the detection unit 20 only has to be rotated by a limited angle range ( ⁇ 360 °, preferably ⁇ 180 °) in order to detect the container feature.
- the finding of the container feature in the image information recorded by the image recording device 21 is thus possible faster.
- the detection unit 20 or the detection machine module 3.2 for quality assurance of the container 2 supplied to the printing device 1, ie not only for detecting the container features BM but also for inspection tasks.
- the image information obtained by the image pickup device 21 for example, a 3D camera
- the image information obtained by the image recording device 21 or information derived therefrom can be compared with desired information to determine that a container 2 is rotationally symmetric or substantially rotationally symmetrical and thus suitable for printing in the subsequent direct printing process.
- a printing of the container 2 can be carried out only in a rotationally symmetric region or the container 2 excluded entirely from the printing and then discharged blank.
- a detection device can be provided in front of the detection machine module 3.2, by means of which the bottom area of a container 2 can be detected.
- the detection device can be arranged such that the container 2 can be analyzed on the underside in the region of its installation surface.
- the detection device may be, for example, a camera. This can be moved with the respective transport element 6 or be provided stationary.
- at least two detection devices can be provided distributed along the multiply deflected transport path TW in the area of the machine module 3.1 and / or 3.2. These detection devices can be provided in particular for detecting the injection point (central elevation on the underside of the container 2) of the respective container 2 moved past.
- the detection means By means of the detection means at least two different image information can be obtained at different rotational positions of the container 2. By evaluating this at least two image information obtained, the centering of the injection point on the container 2 can be analyzed. The centering of the injection point provides information about the fundamental rotational symmetry of the container 2. Thus, the basic printability of the container 2 can be assessed by means of the subsequent direct printing method on the basis of its rotational symmetry properties. In the event that it is determined based on the information about the injection point that a lying outside the target range Rotationsunsymmetrie the container 2 is present, the printing process for this container 2 can be suppressed and the container 2 are then discharged. To capture the Container symmetry can also be provided at least a 3D camera or a 3-laser scanner.
- the outer contour of the container 2 can be detected and analyzed with respect to the container symmetry.
- a deviation of the container symmetry from a desired symmetry value can be determined.
- the printing process for this container 2 can be prevented and the container 2 can then be discharged.
- the direct printing method used in the printing apparatus 1 uses printing heads which operate according to the inkjet principle.
- the print head in this case has a plurality of nozzles, by means of which the printing ink or printing ink is applied to the container wall.
- the delivery of the printing ink or printing ink is controlled such that a respective present contour of the container 2 is printed in an optimal manner.
- the amount of printing ink or printing ink delivered, the delivery rate of the printing ink or printing ink, or else the discharge direction of the printing ink or printing ink can be suitably controlled based on the information obtained.
- the discharge direction of the printing ink or printing ink can be achieved, for example, by applying an electrical potential in the region of the print head nozzles and effecting deflection of the discharged printing ink or printing ink.
- optimal application of the printing ink or printing ink to the container wall can take place as a function of the container contour or container features BM (for example embossings, grooves, etc.) provided on the container wall.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
- Specific Conveyance Elements (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015100334.1A DE102015100334A1 (de) | 2015-01-12 | 2015-01-12 | Erfassungseinheit sowie Vorrichtung und Verfahren zur Bedruckung von Behältern |
PCT/EP2015/081001 WO2016113090A1 (de) | 2015-01-12 | 2015-12-22 | Erfassungseinheit sowie vorrichtung und verfahren zur bedruckung von behältern |
Publications (1)
Publication Number | Publication Date |
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EP3245071A1 true EP3245071A1 (de) | 2017-11-22 |
Family
ID=55025091
Family Applications (1)
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EP15816794.0A Withdrawn EP3245071A1 (de) | 2015-01-12 | 2015-12-22 | Erfassungseinheit sowie vorrichtung und verfahren zur bedruckung von behältern |
Country Status (5)
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US (1) | US10144225B2 (de) |
EP (1) | EP3245071A1 (de) |
JP (1) | JP6687631B2 (de) |
DE (1) | DE102015100334A1 (de) |
WO (1) | WO2016113090A1 (de) |
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CN108472972A (zh) | 2015-12-28 | 2018-08-31 | 宝洁公司 | 用预畸变的转移部件将材料施加到制品上的方法和设备 |
US10940685B2 (en) | 2015-12-28 | 2021-03-09 | The Procter & Gamble Company | Method and apparatus for applying a material onto articles using a transfer component that deflects on both sides |
DE102016109895A1 (de) * | 2016-05-30 | 2017-11-30 | Khs Gmbh | Behandlungssegment sowie Vorrichtung zur Bedruckung von Behältern |
DE102016110316A1 (de) * | 2016-06-03 | 2017-12-07 | Khs Gmbh | Vorrichtung und Verfahren zur Bedruckung von Behältern |
DE102017215481A1 (de) * | 2017-09-04 | 2019-03-07 | Krones Ag | Direktdruckvorrichtung zum Aufbringen eines umlaufenden Druckbildes |
US20190180392A1 (en) | 2017-12-12 | 2019-06-13 | Gpcp Ip Holdings Llc | Personalized food service material printing systems |
US11472579B2 (en) | 2018-12-04 | 2022-10-18 | Gpcp Ip Holdings Llc | Film securing apparatus and method |
US11752779B2 (en) | 2017-12-12 | 2023-09-12 | Gpcp Ip Holdings Llc | Food service cup dispensers, systems, and methods |
DE102018105202A1 (de) * | 2018-03-07 | 2019-09-12 | Khs Gmbh | Vorrichtung zum Bedrucken von Behältern und Verfahren zur Inspektion von Behältern in einer Druckvorrichtung |
CN111546762B (zh) * | 2019-02-12 | 2022-04-19 | 宝洁公司 | 使用传送部件将材料施加到制品上的方法和设备 |
WO2021183350A1 (en) | 2020-03-09 | 2021-09-16 | The Procter & Gamble Company | Method and apparatus for applying a material onto articles using a transfer component |
CN115352722B (zh) * | 2022-10-20 | 2022-12-23 | 江苏尚纯自动化技术有限公司 | 一种粉末灌装机 |
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- 2015-12-22 US US15/543,079 patent/US10144225B2/en not_active Expired - Fee Related
- 2015-12-22 EP EP15816794.0A patent/EP3245071A1/de not_active Withdrawn
- 2015-12-22 WO PCT/EP2015/081001 patent/WO2016113090A1/de active Application Filing
- 2015-12-22 JP JP2017536791A patent/JP6687631B2/ja not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
---|---|
DE102015100334A1 (de) | 2016-07-14 |
US10144225B2 (en) | 2018-12-04 |
WO2016113090A1 (de) | 2016-07-21 |
JP6687631B2 (ja) | 2020-04-22 |
US20180001624A1 (en) | 2018-01-04 |
JP2018504330A (ja) | 2018-02-15 |
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