EP3684620A1 - Direktdruckmaschine und -verfahren zur bedruckung von behältern mit einem mehrfarbigen direktdruck - Google Patents
Direktdruckmaschine und -verfahren zur bedruckung von behältern mit einem mehrfarbigen direktdruckInfo
- Publication number
- EP3684620A1 EP3684620A1 EP18737611.6A EP18737611A EP3684620A1 EP 3684620 A1 EP3684620 A1 EP 3684620A1 EP 18737611 A EP18737611 A EP 18737611A EP 3684620 A1 EP3684620 A1 EP 3684620A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ink
- printing
- direct printing
- direct
- tanks
- 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.)
- Granted
Links
- 238000007639 printing Methods 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims description 17
- 239000000976 ink Substances 0.000 claims abstract description 153
- 238000010017 direct printing Methods 0.000 claims abstract description 111
- 238000003860 storage Methods 0.000 claims description 51
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 238000004062 sedimentation Methods 0.000 claims description 11
- 238000004140 cleaning Methods 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 8
- 238000005086 pumping Methods 0.000 claims description 8
- 239000012080 ambient air Substances 0.000 claims description 7
- 239000002699 waste material Substances 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 239000011159 matrix material Substances 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000013502 plastic waste Substances 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 235000013361 beverage Nutrition 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000007641 inkjet printing Methods 0.000 description 2
- 230000005499 meniscus Effects 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000010897 cardboard waste Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000000825 pharmaceutical preparation Substances 0.000 description 1
- 229940127557 pharmaceutical product Drugs 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
-
- 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
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
- B41J2/17503—Ink cartridges
- B41J2/17506—Refilling of the cartridge
-
- 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
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
- B41J2/17503—Ink cartridges
- B41J2/17553—Outer structure
-
- 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
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/18—Ink recirculation systems
-
- 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
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/17—Cleaning arrangements
-
- 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
-
- 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
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
- B41J2/16517—Cleaning of print head nozzles
- B41J2/16552—Cleaning of print head nozzles using cleaning fluids
Definitions
- the invention relates to a direct printing machine and a direct printing method for printing on containers with a multicolor direct printing according to the preamble of claim 1 or 13.
- containers such as beverage containers
- a label in a labeling machine to mark and / or advertise the container contents.
- the containers are provided instead of or in addition to the labels with a direct print on the ink jet principle. This makes it possible to individually print the containers in a container stream.
- Such direct printing machines typically include a conveyor for transporting the containers and a plurality of stationary direct printing stations having direct print heads attached thereto for printing the containers with multicolor direct printing.
- the containers are, for example, taken up in container receptacles and transported to the stationary direct printing stations.
- the containers are each rotated by means of the container receptacles and thereby printed with one or more direct print heads from a plurality of printing nozzles with a printing ink.
- the print nozzles are controlled so that the ink drops delivered to the container produce the desired print image.
- the containers are transported past the direct printing stations where they are printed sequentially with different printing inks, for example white, cyan, magenta, yellow and black. Also conceivable is the printing with special colors, such as silver or gold.
- such direct printing machines include an ink supply system for supplying the direct printing stations with the printing inks, which comprises a storage tank for each printing ink at the stationary direct printing station.
- a disadvantage of the known ink supply systems that the refilling of the ink in the storage tanks by an operator often perform and is time consuming. Furthermore, in the known ink supply systems, there is no control of operating errors by the operator, whereby, for example, contamination of the machine or refilling of unsuitable or expired ink is prevented. can come. In addition, the printing inks must be refilled in the storage tanks at a high container throughput correspondingly often from plastic containers, creating a correspondingly high waste volume of plastics.
- the object of the present invention is therefore to provide a direct printing machine and a direct printing method for printing on containers with a direct printing, in which the ink supply system is improved with respect to the abovementioned disadvantages.
- the invention provides a direct printing machine with the features of claim 1 ready.
- Advantageous embodiments of the invention are mentioned in the subclaims.
- the direct printing machine includes the refill station with multiple locations for replaceable refill tanks
- the operator can bring the replaceable refill tanks centrally in the receiving stations of the refill. Consequently, the operator no longer has to fill the storage tanks at the individual direct printing stations, which saves corresponding travel paths. Due to the automatic pumping of the ink from the replaceable refill tanks in the storage tanks also refilling the printing inks can be done without intervention of the operator, resulting in a further time savings.
- By accommodating the replaceable refill tanks in the receiving locations it is possible to machine control the correct allocation of the replaceable refill tanks and / or the quality of the ink filled therein. As a result, incorrect operation by the operator can be prevented.
- the direct printing machine can be arranged in a beverage processing plant.
- the direct printing machine can be arranged downstream of a filling plant for filling a product into the containers and / or a capper for closing the containers with closures.
- the direct printing machine can also be connected upstream of the filling process and / or be connected directly downstream of a container production process. Detached from this, it can also be a direct printing press, which is not assigned to any system, but operates in the so-called stand-alone mode.
- the containers may be intended to contain drinks, toiletries, pastes, chemical, biological and / or pharmaceutical products.
- the containers may be provided for any flowable or fillable media.
- the containers may be made of plastic, glass and / or metal, but also hybrid containers with material mixtures are conceivable.
- the containers may be bottles, cans, beverage containers and / or tubes.
- the feed dog may comprise a carousel and / or container receptacles arranged in a revolving manner with it.
- the containers can be transported in a predetermined pattern and rotated relative to the direct printing station during printing.
- the carousel may be rotatable about a vertical axis by means of a drive.
- vertical it may be meant the direction that points to the center of gravity or the direction of gravity.
- the transporter may be designed to transport the containers intermittently or continuously.In the case of an intermittent transport, the containers are opposite each other during printing The at least one stationary direct printing station is briefly stopped and then transported further, however, it is also conceivable for the continuous transport in which the containers are transported on through the conveyor during the printing process.
- the stationary direct printing stations may each include one or more direct print heads to print one of the inks.
- the stationary direct printing stations each comprise one of the storage tanks of the ink supply system for the respective printing ink.
- the direct print heads can use a digital or inkjet printing process in which the ink is delivered to the containers by means of a plurality of printing nozzles.
- "Ink-jet printing process” here may mean that in chambers of a printing nozzle, a sudden increase in pressure via piezoelectric elements or thermocouples is generated such that a small amount of pressure fluid is forced through the pressure nozzle and discharged as a pressure drop to the container.
- the direct printing heads may each have a number of printing nozzles in a range of 100 to 10,000, in particular in a range of 500 to 5000 nozzles.
- the pressure nozzles can be arranged in one or more rows of nozzles (for example 1 to 4), which are arranged in particular parallel to the container axis.
- stationary direct printing stations it may be meant here that the direct printing stations are arranged stationary or stationary relative to a machine base or a standing surface for the direct printing machine.
- the ink supply system may include at least one header tank for each direct print head to adjust a direct print head meniscus pressure. This ensures a particularly high print quality.
- meniscus pressure it may be meant a pressure difference between a flow and a return at the direct print head, as well as an operating pressure of the ink in the direct print head
- the direct print heads from the same storage tank can be supplied with the same printing ink which increases the pressure area on the containers.
- the ink supply system per storage tank may include a supply and / or a return to circulate the ink from the corresponding storage tank through at least one of the direct print heads or to promote at least one of the direct print heads. This avoids sedimentation in the ink supply system.
- the flow and / or the return can be divided over the distribution unit to a plurality of direct print heads. Consequently, the ink can be circulated from a storage tank through multiple direct print heads.
- the ink supply system may comprise at least one ink pump for each storage tank in order to extract the printing ink therefrom and to convey it to one or more of the direct print heads. It is conceivable that in each case an ink pump is arranged in the flow and / or in the return.
- the storage tanks may be the same or larger in volume than the replaceable refill tanks for pumping all the ink content of a replaceable refill tank into one of the storage tanks at one time.
- the storage tanks can each be provided to receive a supply of printing ink for the respective direct printing station.
- the exchangeable refill tanks can be designed to be coupled to an operator with the refill station, preferably with a connection for removing the printing ink.
- "Interchangeable” can mean here that the replaceable refilling tanks are removably formed during a printing operation of the direct printing press, for example by placing them in the receiving spaces Likewise, “interchangeable” may mean that the refill tanks are directly accessible to the operator from outside during the printing operation in order to replace them.
- the direct printing machine may include or be associated with a control unit for controlling the direct printing stations, the direct printing heads and / or the transporter, preferably the container receptacles and / or the ink supply system disposed thereon.
- the control unit may comprise a CPU, a screen and / or an input unit.
- All recording locations can be arranged together as a unit in the refill station.
- the refill station may be arranged separately from the direct printing stations.
- the receiving sites may each be adapted to receive or hold one of the replaceable refill tanks.
- the receiving locations may each include a receptacle for holding one of the replaceable refill tanks.
- the recording sites can be arranged adjacent in a shelf-like receiving front, preferably one above the other, next to each other or as a matrix. In order for the receiving stations can be arranged very compact in the refill, so that the operator can easily and quickly reach for replacing the refill tanks.
- the fact that the "receiving places are arranged adjacently in a shelf-like receiving front" may mean here that they are arranged in cascade fashion in the receiving front.
- the refilling station can be designed as a separate cabinet unit from the stationary direct printing stations and the storage tanks and thus connected via connecting lines for the printing ink. This allows the operator to replace the replaceable refill tanks at a central location very quickly.
- the connecting lines can each connect at least one of the replaceable refill tanks to a storage tank.
- the receiving front may be a front or top of the separate cabinet unit.
- the refill station comprises at least one further receiving space for a supply tank with a cleaning fluid and / or for a refuse tank for the printing ink.
- the refilling station can also be used for a cleaning procedure of the direct printing stations.
- the cleaning fluid can be refilled centrally or the waste tank can be emptied centrally.
- cleaning fluid may here be meant a fluid which can be used to clean the direct print heads.
- Drain tank may here mean a receptacle into which spent ink is disposed of, for example after rinsing the ink supply system or purge at least one of the direct print heads can.
- the replaceable refill tanks may each comprise a bag for receiving the ink and a support structure at least partially surrounding the bag, the bag having the port for removing the ink, preferably wherein the bag is at least partially made of plastic and / or the support structure is formed as a support box , As a result, less disposable plastic waste accumulates after the removal of the ink for the replaceable refill tanks.
- bag it may be meant herein a self-contained bladder to receive the ink, and the port may include a coupling member for connecting the replaceable refill tank to a connection coupling of one of the receiving locations
- Support structure may be a frame structure or a box-like structure to provide mechanical stability to the bag
- the support structure formed as a support box may be made of cardboard and / or a paper-like material, thus producing cardboard waste that is easier to recycle instead of plastic waste.
- As the support box may have an opening through which the connection of the bag for removing the ink protrudes outward.
- the support structure, in particular the support box may be foldable designed to fold them together after use particularly space-saving.
- the receiving locations may each include a receptacle for one of the replaceable refill tanks, a connection coupling for releasable connection to the received replaceable refill tank, and / or an ink pump for pumping the ink from the retrieved replaceable refill tank to one of the storage tanks.
- the replaceable refill tanks can be stored particularly easily at the receiving locations and connected to automatically circulate the printing ink.
- recording here can be meant a shelf, a rail and / or a tool-free attachment for one of the replaceable refill tanks.
- connection coupling can here be meant a connection element which can be coupled to the connection of the replaceable refill tank. This may preferably be the connection for removing the printing ink of the bag described above.
- connection coupling can be designed to connect and remove the printing ink from the accommodated, exchangeable refill tank, for example as couplable pipe elements.
- the ink pump may be connected on the one hand via a first hose member with the recorded replaceable refill tank and on the other hand with a second hose member to the storage tank.
- the receiving locations may each include a valve block upstream of the ink pump to selectively pump ink from the received, replaceable refill tank or ambient air to the storage tank.
- the connecting lines to the storage tank can be filled both with printing ink and with the ambient air. Consequently, the remaining in the connecting lines after the automatic pumping ink in the storage tank can be emptied to avoid sedimentation in the connecting lines.
- the recording sites can each comprise at least one display element for displaying an operating state. This allows the operator to detect very easily and reliably whether the inks in the replaceable refill tanks are in a proper condition. You can also see if you need to replace one of the replaceable refill tanks.
- the recording sites can each have a data transmitter, preferably an RFID-writing read head and the replaceable refill tanks each have a data mark, preferably a RFID tag to preferably exchange encrypted data on the existing in the respective replaceable refill ink and / or store.
- a data transmitter preferably an RFID-writing read head
- the replaceable refill tanks each have a data mark, preferably a RFID tag to preferably exchange encrypted data on the existing in the respective replaceable refill ink and / or store.
- all accumulating data on the replaceable refill tanks or the ink contained therein in the data marks are stored, so that a central database is unnecessary.
- the expiration date of the ink contained in the associated replaceable refill tank may be stored in the data mark. It is also conceivable that a date is stored in the data mark, at which the replaceable refill tank was shaken last or must be shaken in the future. This avoids sedimentation of the ink in the replaceable refill tank.
- the data marks it is possible to prevent the feeding of printing ink of a foreign manufacturer into the storage tanks. If the data in the data tag is encrypted, it is particularly well protected against manipulation. It is also conceivable that ink consumptions of the printing inks are stored in the data marks in order to give the operator in good time an indication for the reordering of new replaceable refilling tanks.
- the data mark and the data transmitter can preferably be designed for wireless data transmission. If the replaceable refill tanks each contain an RFID tag, you do not need your own power supply and can still be read out or written wirelessly.
- the receiving sites can each be designed as an exchangeable module and be connected via at least one fastener to the refill. This allows you to be replaced very quickly by the operator during maintenance and / or failure.
- the receiving sites can be arranged on a support wall of the separate cabinet unit and thus connected in each case via the at least one fastening element.
- the receiving locations may each comprise a support for the ink pump and / or the valve block and a housing at least partially surrounding the housing with the receptacle for the replaceable refill tank, wherein the receptacle is preferably arranged on an outer side of the housing as a storage surface.
- the control unit may be designed to control the refilling station with the receiving stations, in particular the ink pump, the valve block, the display element and / or the data transmitter.
- the control unit may be configured to encrypt the data transmitted between the data transmitter and the data tag.
- the invention provides a replaceable refill tank with the features of claim 12 to solve the problem. As a result, less disposable plastic waste accumulates after the removal of the ink for the replaceable refill tank.
- the replaceable refill tank may include the features described above in this regard, individually or in any combination.
- the invention provides a direct printing method for printing on containers with a multicolor direct printing according to the features of claim 13 to solve the task.
- Advantageous embodiments of the direct printing method are called the subclaims.
- the direct printing method can be carried out with the direct printing machine described above, preferably according to one of claims 1-11.
- the direct printing method may include the features described above with respect to the direct printing machine individually or in any combination mutatis mutandis.
- the replaceable refill tanks can each be replaced by an operator to refill the ink as a whole. As a result, the replaceable refill tanks are not filled but replaced, whereby the operator a corresponding time savings is possible.
- the storage tanks may have the same or a larger volume, as the replaceable refill tanks.
- One of the refill tanks may be shaken by an operator to avoid sedimentation and a time of shaking may be deposited in a data tag of the refill tank, preferably in an RFI D mark. This can prevent the quality of the ink contained in the refilling tank from being reduced by sedimentation. Alternatively, a future time for shaking again in the data mark can be stored.
- Figure 1 shows an embodiment of a direct printing machine according to the invention for
- FIG. 2 shows the refilling station of the direct printing machine shown in FIG. 1 in a perspective view
- Figure 3A - 3B one of the receiving positions of the refill station shown in Figure 2 in two perspective views, with or without replaceable refill tank.
- FIG. 4 shows the receiving location of FIGS. 3A-3B in a disassembled perspective view
- Figure 5 shows an embodiment of an inventive replaceable refill tank in a plan view.
- FIG. 1 shows an embodiment of a direct printing machine 1 according to the invention for printing containers 2 is shown with a multi-color direct printing in a plan view.
- the containers 2 for example, coming from a filler and a capper, passed with the feed star 8 to the feed dog 3 and there are included in the container receptacles 4.
- they are transported by the transporter 3 past the stationary direct printing stations 5w, 5c, 5M, 5Y, 5S, 5K attached thereto and each printed with different inks by means of the direct printing heads 52, here for example white, cyan, magenta, yellow, a special film work (eg silver) and black.
- the direct printing heads 52 here for example white, cyan, magenta, yellow, a special film work (eg silver) and black.
- the conveyor 3 is exemplified as a carousel, which rotates in the transport direction T about the vertical axis A, but also conceivable is a linear transporter.
- the arranged on the conveyor 3 container receptacles 4 each comprise a turntable and a centering, so that the container 2 can be rotated in the printing operation relative to the respective stationary direct printing station 5w, 5c, 5M, 5 ⁇ , 5s, 5K about their longitudinal axes. As a result, a flat direct pressure can be generated.
- the direct printing stations 5w, 5c, 5M, 5 ⁇ , 5s, 5K each comprise a storage tank 51 of the ink supply system and several associated direct print heads 52, in this embodiment, for example, three direct print heads 52.
- the direct printing heads 52 are located in the other storage tanks 51 5w, 5c, 5M, 5Y, 5S, 5K a supply of the inks cyan, magenta, yellow, the special color and black to supply the direct print heads 52nd
- the direct print heads 52 each comprise at least one row of nozzles with printing nozzles, which operate on the ink jet principle. This makes it possible to deliver to the container 2 in a grid pressure drops and so together with the rotational movement of the container 2 to generate about their longitudinal axes a flat direct pressure. In addition, each of the printed inks superimposed on the containers 2 to a multicolor direct printing.
- the ink supply system comprises in the direct printing stations 5w, 5c, 5M, 5 ⁇ , 5s, 5 ⁇ arranged in each case a distribution unit to divide the ink from the storage tank 51 in a flow and optionally a return to the direct print heads 52.
- the ink supply system comprises each between the storage tank 51 and the associated Direct print head 52 at least one header tank, not shown here, to ensure an operating pressure of the associated direct print head.
- the refill station 6 can be seen, with which the storage tanks 51 in turn can be supplied with the respective printing ink.
- the refilling station comprises a plurality of receiving locations 630 w, 630c, 630M, 630 ⁇ , 630s, 630K for the exchangeable refilling tanks 631w, 631c, 631M, 631Y, 631s, 631K, each for automatically circulating ink from the refilling tanks into the respective storage tanks 51 are formed.
- the refilling station 6 is designed as a separate cabinet unit from the stationary direct printing station 5w, 5c, 5M, 5Y, 5S, 5K and the storage tanks 51 and is thus connected via connecting lines for the printing inks.
- the receiving locations 630w, 630c, 630M, 630 ⁇ , 630s, 630K are arranged adjacent in the shelf-like receiving front 610, which will be explained in more detail below with reference to FIG. This makes it possible for the operator to manage the ink supply centrally at the refilling station 6 by means of an exchange of the refilling tanks 631 w, 631c, 631M, 631y, 631s, 631K. This makes a safe and fast refilling of the ink supply possible.
- the refill station 6 comprises two further receiving spaces 650, 660 for a supply tank with cleaning fluid or for a waste tank for the printing ink.
- the measures necessary for cleaning the direct printing machine 1 can also be carried out centrally at the refilling station 6.
- the refilling station 6 will be explained in more detail below with reference to FIGS. 2-4.
- FIG. 2 shows an exemplary embodiment of the refilling station 6 from FIG. 1 in a perspective view.
- the refilling station 6 comprises a plurality of adjacent receiving places 630 w , 630c, 630M, 630Y, 630 s , 630 k for the replaceable refilling tanks 631 w , 631c, 631M, 631Y, 631S, 631K, the shelf-like ones in the receiving front 610 are arranged as a matrix.
- the three inks for the six printing inks white, cyan, magenta, yellow, the spot color and black each have three recording locations which are arranged in the 6 ⁇ 3 matrix.
- the refilling station 6 is designed as a separate cabinet unit from the stationary direct printing station 5w, 5c, 5M, 5Y, 5S, 5K shown in FIG. 1 and the storage tanks 51.
- the receiving places 630w, 630c, 630M, 630Y, 630S, 630K and the replaceable refilling tanks 631w, 631c, 631M, 631Y, 631S, 631K, respectively, have the same structure and will continue to be below with reference to Figures 3A, 3B and 4 and 5 explained in more detail.
- the refill tanks 631w, 631c, 631M, 631Y, 631S, 631K do not differ as such but only through the ink filled therein.
- the refilling station 6 comprises two further receiving spaces 650, 660 for a supply tank with a cleaning fluid and for a waste tank for the printing ink.
- the direct printing machine 1 can be supplied with the cleaning liquid during cleaning and the rejects of printing ink can be discharged into the waste tank. Consequently, the operator can also replace the supply tank and the waste tank centrally at the refilling station 6.
- FIGS. 3A-3B one of the receiving locations 630 of the refilling station 6 shown in FIG. 2 is shown in two perspective views, with or without an exchangeable refill tank 631.
- the replaceable refill tank 631 is deposited in the receptacle 632 of the receiving space 630.
- the replaceable refill tank 631 includes a port 631a which is connected to the take-up place 630 for taking out the ink via the connection coupling 633.
- the connection coupling 633 is in turn connected via the ink line 634 to the valve block 639 shown below in FIG. 4 and the ink pump 638 to pump the ink to the reservoir 51 shown in FIG.
- the receiving location 630 includes the display element 635 to indicate the operating state to the operator. If the display element 635 is illuminated green, the receiving space 630 is in a proper condition and a sufficient ink supply is available in the accommodated replaceable refill tank 631.
- catch element 636 can be seen, to which the connection coupling 633 can be coupled, if there is no replaceable refill tank 631 on the receptacle 632. As a result, an inadvertent flow out of ink is avoided.
- a data transmitter 637 is arranged on the rear side of the receiving location 630, which is embodied here, for example, as an RFID read-write head.
- data mark 631 d shown only in FIG. 5
- RFI D mark encrypted data on the existing in the replaceable refill tank 631 ink read and / or stored therein.
- the data transmitter 637 and the data tag it is possible to store an expiration date of the ink and, if exceeded, to indicate a corresponding operating condition with the display element 635.
- a coding is stored in the data mark, so that only authorized by the manufacturer of the direct printing machine 1 ink is used.
- the receiving location 630 is designed as an exchangeable module and is connected via the fastening elements B to the refilling station 6 (screws in this case). These can be easily solved, so that the receiving space 630 can be easily removed from the refill station 6 in case of failure or maintenance.
- FIG. 3A-3B shows a perspective view of the disassembled receiving space 630 from FIGS. 3A-3B.
- the receiving space 630 comprises the carrier 642 and the housing 643, which can be pushed together and connected to each other via screws. As a result, the receiving space 630 can be easily opened for maintenance or repair.
- the valve block 639 is shown in detail, which is connected via the port 639 a and the ink line 634 to the connection coupling 633 for removing ink from the replaceable refill tank 631.
- the valve block 639 has an intake opening 639b for ambient air.
- the intermediate pipe 640 is in turn connected to the ink pump 638, through which the printing ink or the ambient air is conveyed into the connecting line 641.
- the ink pump 638 is first connected to the replaceable refill tank 631 via the valve block 639 and the connection coupling 633.
- the printing ink can be pumped automatically from the exchangeable refill tank 631 into the storage tank 51 shown in FIG.
- the valve block 639 is switched over to the suction opening 639b, above that the ambient air is sucked in and pumped into the connecting line 641 as far as the storage tank 51.
- the printing ink is largely removed from the connecting line 641, so that sedimentation is prevented.
- the ink pump 638 and the valve block 639 are mounted on the carrier 642, which can be inserted and screwed into the housing 643.
- the housing 643 has at the top the receptacle 632 for the replaceable refill tank 631.
- the opening 644 for the rearward arrangement of the data transmitter 634 shown in FIG. 3B can be seen. As a result, the wireless transmission of the data and the inductive power supply through the data transmitter 637 are disturbed as little as possible.
- FIG. 5 illustrates an exemplary embodiment of a replaceable refill tank 631 according to the invention in a plan view.
- the replaceable refill tank 631 comprises the ink receiving bag 631b and a support structure 631c surrounding the bag 631b.
- the bag 631b here consists of plastic film and the support structure 631c is designed as a support box made of cardboard.
- the supporting structure 631c will give the bag 631b the necessary stability.
- the port 631a can be seen, via which the printing ink D can be removed from the bag 631b.
- the connection 631a is guided through the opening 631e of the support structure 631c to the outside.
- the hybrid construction of the replaceable refill tank 631 of bag 631b and the support structure 631c avoids high plastic waste so that it is easier to recycle. Since the support structure 631c as a support box made of cardboard, this can be recycled environmentally friendly.
- the direct printing machine 1 with the feed dog 3, the attached stationary direct printing station 5w, 5c, 5M, 5 ⁇ , 5s, 5 ", the ink supply system, the refilling station 6 and the replaceable refill tank 631 of FIGS. 1-5 is used as follows:
- the containers 2 are transported with the conveyor 3 to the attached stationary direct printing stations 5W, 5C, 5M, 5Y, 5S, 5K.
- the containers 2 are rotated by means of the container receptacles 4 about their longitudinal axes and thereby printed by the direct printing heads 52 arranged in the stationary direct printing station 5W, 5C, 5M, 5Y, 5S, 5K with a multicolored direct printing.
- the direct printing stations 5W, 5C, 5M, 5Y, 5S, 5K are supplied by the ink supply system with a plurality of printing inks from a respective storage tank 51.
- an operator inserts the replaceable refill tanks 631W, 631C, 631M, 631Y, 631S, 631K with appropriate inks into the receiving locations 630w, 630c, 630M, 630Y, 630S, 630K of the refilling station 6, where necessary automatic pumping of the printing inks from the replaceable refill tanks 631W, 631C, 631M, 631Y, 631S, 631K into the respectively associated storage tanks 51 is started.
- a replaceable refilling tank 631 W, 631C, 631M, 631 Y, 631S, 631 K is pumped into the associated storage tank 51, so that the least possible sedimentation occurs.
- replaceable refill tanks 631 W, 631 C, 631 M, 631 Y, 631 S, 631 K are shaken by an operator at regular intervals to avoid sedimentation and the time of shaking is stored in the respective data mark 631d. This ensures a consistent quality of the ink.
- replaceable refill tanks 631w, 631c, 631M, 631Y, 631S, 631K are each replaced as a whole by the operator.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Ink Jet (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017215431.4A DE102017215431A1 (de) | 2017-09-04 | 2017-09-04 | Direktdruckmaschine und -verfahren zur Bedruckung von Behältern mit einem mehrfarbigen Direktdruck |
PCT/EP2018/068174 WO2019042633A1 (de) | 2017-09-04 | 2018-07-05 | Direktdruckmaschine und -verfahren zur bedruckung von behältern mit einem mehrfarbigen direktdruck |
Publications (2)
Publication Number | Publication Date |
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EP3684620A1 true EP3684620A1 (de) | 2020-07-29 |
EP3684620B1 EP3684620B1 (de) | 2023-06-21 |
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ID=62837937
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP18737611.6A Active EP3684620B1 (de) | 2017-09-04 | 2018-07-05 | Direktdruckmaschine und -verfahren zur bedruckung von behältern mit einem mehrfarbigen direktdruck |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3684620B1 (de) |
CN (1) | CN212604065U (de) |
DE (1) | DE102017215431A1 (de) |
WO (1) | WO2019042633A1 (de) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
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US7350890B2 (en) * | 2004-08-26 | 2008-04-01 | The Boeing Company | Apparatus and methods for applying images to a surface |
DE102010055783B3 (de) * | 2010-12-23 | 2012-06-14 | Marabu Gmbh & Co. Kg | Tintenkartusche für Tintenstrahldrucker |
DE102013208065A1 (de) * | 2013-05-02 | 2013-07-04 | Krones Ag | Rundläufermaschine zur Bedruckung von Behältern |
DE102013217679A1 (de) * | 2013-09-04 | 2015-03-05 | Heidelberger Druckmaschinen Ag | Druckmaschine für den Tintenstrahldruck auf Behälter |
DE102015215227A1 (de) * | 2015-08-10 | 2017-02-16 | Krones Ag | Behälterbehandlungsmaschine und Verfahren zur Bedruckung von Behältern |
DE102015215224A1 (de) * | 2015-08-10 | 2017-02-16 | Krones Ag | Behälterbehandlungsmaschine und Verfahren zur Bedruckung von Behältern |
DE102015220287A1 (de) * | 2015-10-19 | 2017-04-20 | Krones Ag | Direktdruckverfahren und Behälterbehandlungsmaschine zur Bedruckung einer Vielzahl von gleichartigen Behältern |
-
2017
- 2017-09-04 DE DE102017215431.4A patent/DE102017215431A1/de not_active Withdrawn
-
2018
- 2018-07-05 EP EP18737611.6A patent/EP3684620B1/de active Active
- 2018-07-05 CN CN201890001150.6U patent/CN212604065U/zh active Active
- 2018-07-05 WO PCT/EP2018/068174 patent/WO2019042633A1/de unknown
Also Published As
Publication number | Publication date |
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DE102017215431A1 (de) | 2019-03-07 |
EP3684620B1 (de) | 2023-06-21 |
CN212604065U (zh) | 2021-02-26 |
WO2019042633A1 (de) | 2019-03-07 |
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