EP3044000B1 - Adaptateur de nettoyage et procede de nettoyage de têtes d'impression - Google Patents

Adaptateur de nettoyage et procede de nettoyage de têtes d'impression Download PDF

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Publication number
EP3044000B1
EP3044000B1 EP14766692.9A EP14766692A EP3044000B1 EP 3044000 B1 EP3044000 B1 EP 3044000B1 EP 14766692 A EP14766692 A EP 14766692A EP 3044000 B1 EP3044000 B1 EP 3044000B1
Authority
EP
European Patent Office
Prior art keywords
cleaning
printhead
adapter
printing
printed
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.)
Active
Application number
EP14766692.9A
Other languages
German (de)
English (en)
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EP3044000A1 (fr
Inventor
Volker Till
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dekron GmbH
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Dekron GmbH
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Filing date
Publication date
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Publication of EP3044000A1 publication Critical patent/EP3044000A1/fr
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Publication of EP3044000B1 publication Critical patent/EP3044000B1/fr
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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
    • 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
    • B41J2/16505—Caps, spittoons or covers for cleaning or preventing drying out
    • 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
    • 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
    • B41J2/16535—Cleaning of print head nozzles using wiping constructions
    • 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
    • B41J2/16535—Cleaning of print head nozzles using wiping constructions
    • B41J2/16544—Constructions for the positioning of wipers
    • B41J2/16547—Constructions for the positioning of wipers the wipers and caps or spittoons being on the same movable support
    • 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
    • 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

Definitions

  • the present invention relates to a cleaning device in the form of a cleaning adapter for cleaning printheads, in particular inkjet printheads, in a system for printing three-dimensional containers, in particular bottles made of plastic or glass, wherein the container to be printed in the system by a transport system to a Printing machine are spent with the at least one print head and a region to be printed on the container in front of the print head is positioned. Furthermore, the invention relates to a corresponding cleaning method and an installation set up for carrying out the cleaning process.
  • Systems for printing on containers are used primarily in the industrial sector. Such a plant is exemplary in the DE 10 2009 058 219 A1 described.
  • This plant has to print on containers on several consecutively formed as a carousel printing presses through which the containers to be printed on a constructed of different systems, such as jig, transport devices and brackets transport system.
  • the containers are moved in each carousel past the printheads of the printing presses and so provided with a print pattern before being transferred to the subsequent carousel. After passing through the system, the containers are provided with the desired motif.
  • systems with only one printing press in particular one known as a carousel printing machine, to which the invention relates to the same dimensions.
  • a high throughput rate is a competitive factor in the industrial application of these systems.
  • An example of this is a system for bottle processing in which up to 36,000 bottles per hour are passed through the system. Inside the plant, the bottles are guided past printheads of the printing press and printed with liquid inks over the inkjet printheads.
  • Printing machines for inkjet printers within such systems typically operate with one or more printheads having multiple nozzles. These are arranged in the number of about 1000 pieces in series on the printhead to obtain the desired resolution in the area to be printed. Since a high throughput rate is required for large and lasting print quality especially in industrial applications, efficient maintenance and cleaning of the print heads is also necessary.
  • the printheads pollute due to the continuous operation due to the nature of the application. For example, dust and ink deposits can contaminate the nozzles. This problem is exacerbated by the use of UV-curable inks when the printed container is still irradiated in the printing machine with UV light after printing to fix the printed ink. Excessive UV light can also harden the ink still in the nozzles and render the printhead unusable if it is not regularly and effectively cleaned.
  • a printhead must therefore be cleaned at certain intervals.
  • several basically known cleaning methods are available.
  • a first possibility is to wipe off the contaminants from the print head by means of a scraper or the like in the manner of a mechanical cleaning.
  • Such a working system is, for example, in the US 2003/0218654 A1 described.
  • This is a printhead for the purpose of cleaning moved from his work area in a maintenance area in which moves a cleaning device of a wiper unit with a kind of windshield wiper along the bottom of the print head with the nozzles, so that residues of the hydraulic fluid are removed by the wiper or wiper. After cleaning, the printhead is moved back into its working area.
  • the cleaning system brings an increased space requirement.
  • the cleaning process is complex due to the method of the print head, because a corresponding adjustment is provided, which must also ensure a very reliable and accurate repositioning, so that the print quality is not affected.
  • printhead movement into the cleaning position negatively affects the throughput of the entire equipment because the printhead can not be used for a significant amount of time within the equipment.
  • Another known way to clean a printhead is to rinse the printhead. Cleaning and rinsing solutions can be used here. Also, all nozzles, possibly even multiple, are controlled, so that the nozzles are flushed through, which are rarely used. In this case, a rinse can also be done with the actually used for printing ink. In both cases, however, it is necessary to collect the escaping liquid and to dispose of it in a targeted manner. However, especially when the nozzles are purged under pressure, the immediate vicinity of the printhead, for example other printheads, may be soiled by ink, ink splashed detergent spatter or the like. It can also lead to a paint mist, which deposits on undesirable sites.
  • a cleaning apparatus for cleaning ink jet printers wherein the printhead is as described above is cleaned.
  • the ink ejected from the ink-jet printhead during the cleaning process is collected in a receptacle.
  • the printhead to be cleaned is moved from its working position to a maintenance and cleaning position.
  • the print head is rinsed for a certain time by means of overpressure in the ink system, so that at the same time from all nozzles ink flows and dust or dirt particles, as well as hardened ink residues, are washed away.
  • a lamellar arrangement on the collecting device catches the dirt and directs it into the collecting container.
  • a printing device and a method for printing on a print carrier with a print head and a transport device for the print carrier are known from US 6,182,566 B1 known.
  • the print head is not moved during printing, but by a transport means and a displacement means, the print carrier is moved relative to the print head.
  • the print head is pivoted about an axis in a predetermined position to a cleaning and sealing station.
  • the US 2015/0062240 A1 describes one of the US 6,182,556 B1 similar printing station, in which cleaning adapter is installed on a transport carousel to move with the transport carousel on different printheads over.
  • the cleaning adapter can be installed, for example, in a receptacle for objects to be printed.
  • a printing apparatus for printing on bottles or the like container is known from US 2011/232514 A1 known. This has several printing positions on a circumferentially drivable transport element, with which the printing position and the container on a self-contained trajectory of a Container task to be moved to a container acceptance.
  • a protective sleeve is provided, which surrounds the container to be printed during printing. During printing, when the protective cover is closed, an air flow is generated through the protective sleeve, and atomized printing ink is sucked out of discharge tubes.
  • the cleaning adapter which in particular comprises means for cleaning the print head, in particular for mechanically cleaning and / or flushing the nozzles of the print head, be designed such that the cleaning adapter instead of one or more of the container to be printed in the transport system of the system and introduced by the transport system for cleaning purposes to the printhead and can be positioned in front of this.
  • the cleaning adapter can therefore be positioned in a position in front of the print head in which a container to be printed is printed.
  • containers such as bottles
  • the cleaning adapter can now be queued directly into the row of bottles or containers to be printed and drives instead of a container to be printed in the system or through the system.
  • the means for cleaning are matched with regard to their position on the cleaning adapter on the printing process and can be arranged in particular with regard to their vertical position on the adapter so that they are located at the same height as the area to be printed on the bottle.
  • the cleaning adapter can be positioned in front of the print head, for example by turning a turntable in a simple manner so that the means for cleaning are positioned immediately before the print head and its nozzles to be cleaned or. As a result, the cleaning process can be started immediately during operation without the printhead having to be moved from the printing position into a cleaning position.
  • the inventive design of a cleaning device ie the cleaning adapter, thus offers the possibility to the transport system to to place the cleaning adapter in front of the button in the same manner as the container being printed, with the cleaning adapter simulating the presence of the 3-dimensional container in the system's pressure system.
  • the cleaning adapter cleans the printhead, for which purpose the printhead and / or the cleaning adapter may be appropriately controlled.
  • the existing cleaning devices are not adapted to the printing system or the system that they would be moved over the transport system to the print head. Rather, the printhead is moved to the cleaning system.
  • the solution according to the invention offers the possibility of cleaning the printhead without having to move it to a cleaning position, which proves to save time, is less complex in terms of equipment and ensures accurate positioning of the printhead in the printing machine (also referred to as a printing system or printing system) because the printhead is not moved.
  • the positioning of the cleaning adapter is carried out according to the invention by utilizing the existing transport system for the containers to be printed.
  • the cleaning adapter according to the invention has an outer shape corresponding to the container to be printed, in particular in the areas of the cleaning adapter or of the container in which the transport port system acts on the cleaning adapter or container during transport.
  • the cleaning adapter may easily include wiping elements for wiping the printheads and / or openings for receiving detergent or ink ejected from the nozzles of the printhead.
  • a corresponding, inventive cleaning method for the inventive use of the proposed cleaning adapter for inkjet printheads in a corresponding system for printing on containers provides to carry out the cleaning process at least one of the described cleaning adapter according to the invention introduce into the transport system and lead by the transport system for cleaning purposes to the print head. The print head is then cleaned by the cleaning adapter in the appropriate manner, in particular as described in detail below.
  • An inventive cleaning adapter will be formed by an at least partially hollow container having at least one opening, which may act in particular as a means for cleaning the print head.
  • Such a cleaning adapter is particularly suitable for cleaning the nozzles of a printhead by means of overpressure.
  • the cleaning adapter may e.g. be a special cleaning bottle. This is retracted into the machine or placed in the transport system of the system and aligned directly in front of the print nozzle rows of a printhead. In this case, the opening or openings of the bottle-shaped cleaning adapter, which are distributed over the circumference, placed directly in front of the nozzles of the print head.
  • the cleaning adapter also referred to below as a bottle, provides a receptacle for cleaning solution, rinsing solution or ink, which is preferably rinsed under pressure from the nozzles.
  • the adapter can serve as a common receptacle for several, for example, two or more printheads, for example, are arranged around the bottle in the printing machine and are cleaned at the same time can.
  • a division or subdivision can be provided, in particular in the sense of a partition wall, which prevents it from becoming lodged Distribute liquid or particles ejected from the nozzles of the printhead in the vicinity of the printhead and deposit, for example, on other printheads. It is possible, for example, for the container interior of the cleaning adapter to be subdivided in segments, wherein preferably each opening is assigned to an (otherwise closed) own segment within the cleaning adapter. Above all, the subdivision offers the possibility of cleaning several print heads at the same time, without the nozzle jet of one print head contaminating another print head.
  • these segments may be formed by walls which extend from the outer periphery towards the center of the bottle to form walls which are oriented obliquely to the opening.
  • walls which extend from the outer periphery towards the center of the bottle to form walls which are oriented obliquely to the opening.
  • the liquid ejected from the nozzles can be collected in the cleaning adapter in a basin or reservoir, for example in the form of a bottle bottom, which is formed according to the invention at the bottom of the cleaning adapter, preferably adjoining the opening. Subsequently, the bottle or the cleaning adapter on the transport system again out of the press eg. The entire system drove out. It is so ensured that cleaning without contamination of the system can be carried out automatically.
  • a further embodiment of a cleaning adapter according to the invention provides that it has at least one wiper element for cleaning the print head.
  • the cleaning adapter moved over the transport system to the print head and the wiper element is placed in front of the print head. There, the wiping element in immediate Contact the printhead and dab or wipe off the remnants of the print process or wipe off any dirt.
  • the wiping element is designed to receive ink.
  • it may be an absorbent element, such as a sponge, which absorbs the ink by wicking and removes excess residue from the printhead.
  • wipes preferably lint-free wipes, or other suitable means for this purpose, such as. Cleaning wipes, are suitable according to the invention.
  • a particularly efficient cleaning can be achieved when the wiper element is moved up to the print head and then moved relative to the print head, so that dirt is mechanically removed, so wiped.
  • the cleaning adapter for bringing the wiper element to the print head has a traversing device (traversing means), which is preferably activatable in that the cleaning adapter is pressurized from the inside.
  • a traversing device preferably activatable in that the cleaning adapter is pressurized from the inside.
  • Suitable for this purpose is air pressure or a pressure generated by a similar medium or fluid, for example a hydraulic system.
  • the traversing device is formed by a membrane disposed behind the wiper element, which sealingly covers the opening and which brings the wiper element to the print head or pushes when the cleaning adapter is pressurized from the inside and the membrane pushes out through the opening.
  • a membrane disposed behind the wiper element, which sealingly covers the opening and which brings the wiper element to the print head or pushes when the cleaning adapter is pressurized from the inside and the membrane pushes out through the opening.
  • a pressurized medium such as. Compressed air
  • the cleaning adapter is additionally moved or moved in such a way after being subjected to pressure relative to the print head that it also mechanically cleans the nozzles.
  • This is possible, for example, via a lifting system with which e.g. Flasks are driven in a system in the printhead assembly or printing press.
  • the wiper element on the cleaning bottle wipes the surfaces of the print heads and collects mechanical dirt.
  • the diaphragm retracts and the bottle can be removed from the system.
  • the suction nozzle which is preferably integrated into the cleaning adapter, can be moved vertically along the print head and in the ideal case even receive surplus liquid without contact.
  • the vacuum generation can be carried out by a battery-operated pump, which is arranged in a separate vacuum chamber to which the suction nozzle is connected.
  • the software module can be set up in such a way that It monitors the quality of the printed image and decides whether a cleaning process must be performed.
  • the software module is set up in such a way that it is decided on the basis of the printed image which of the cleaning methods according to the invention is used.
  • a mechanical cleaning may be necessary to remove a speck of dust. Lack of color may indicate a clogged nozzle, so nozzle flushing by ejecting ink and / or cleaning fluid under pressure is recommended.
  • the software module can also be set up in such a way that automatic loading of the corresponding printing press is prevented if a necessary cleaning is detected.
  • the software module is set up to decide whether an immediate cleaning should be performed, because this brings a lower production loss with it as moving the cleaning up to a planned production stop and a continuation of the entire system until then a reduced number of printing stations or machines.
  • the object underlying the invention is further achieved by a system for printing three-dimensional containers, such as bottles made of plastic or glass, with the features of claim 9, wherein the containers to be printed in the system by a transport system for printing led to at least one print head be or are feasible.
  • the system is set up such that the cleaning of the at least one print head is carried out according to the above-described method or parts thereof using a cleaning adapter according to the invention.
  • the cleaning adapter proposed according to the invention and the cleaning method based on the use of this adapter prove to be particularly cost-efficient, in particular in systems with several print heads per printing press and / or several printing presses, each with one or more print heads. Multiple arrays of printheads can be successively cleaned by a cleaning adapter by placing the adapter in the system's transport system where it cleans one or more printheads and then moves to the next printing station or press after completing the cleaning process.
  • Fig. 1 shows a cleaning adapter 1 in the form of a bottle, as it is usually suitable for receiving liquids.
  • the bottle 1 has a bottle body 3 extending to a bottle neck 2, which conically tapers in the transition to the bottle neck 2.
  • the bottle neck 2 has an upper opening 4 in the manner of a regular bottle.
  • the illustrated cleaning adapter 1 is used in particular in systems for printing on bottles and simulated in terms of its shape so the product to be printed. Such systems have in particular several printing presses or printing stations, each with one or more print heads.
  • an opening 5 is visible, which lies in the area of the surface to be printed on a normal bottle.
  • liquids from a (in Fig. 2 shown) print head 6 are ejected, get into the interior of the bottle 1 and collected there. How out Fig. 1 As can be seen, the opening 5 does not extend to the bottom of the bottle 1. Between the bottom of the bottle 1 and the opening 5 so formed a reservoir 11 for collecting liquids.
  • the cleaning bottle (cleaning adapter 1) is inserted into a non-illustrated transport system of the system and moved to the print head 6 or transported. About transport system, the bottle 1 is positioned positioned immediately in front of the print head. In this case, the bottle is 1 is rotated via a rotary drive, also not shown, so that the opening 5 to the print head 6 aligned, that is positioned directly in front of the print head 6, as in the sectional view XX in Fig. 2 is shown.
  • the bottle 1, here compared to Fig. 1 shown rotated by 90 °, is positioned with its opening 5 directly in front of or a print head 6.
  • the opening 5 is slightly larger in size (width, height) than the array of nozzles (indicated only by the arrows extending from the surface of the print head 6) on the print head 6, from which the ink when printing on the surface of a normal Bottle is sprayed.
  • a printing liquid supply system 7 is connected, via which the ink is supplied to the print heads. Ink passes into the print head 6 via an ink feed 8a, while excess ink can leave the print head 6 accordingly via an ink return 8b. For cleaning, ink from the ink supply is pumped into the print head 6 and injected via the nozzles under pressure through the opening 5 in the bottle 1.
  • the printhead 6 can be brought closer to the bottle 1 beforehand, provided that, for example, this is also provided during a normal printing operation. Preferably, the print head 6 occupies the same position as during the printing operation.
  • a valve system 9a, 9b can additionally be provided, with which the ink supply can be separated from the print head 6 and the print head 6 with a feed line 10a and a return line 10b for a cleaning agent, e.g. a cleaning fluid, can be connected.
  • a cleaning agent e.g. a cleaning fluid
  • the ink supply system 7 via the valves 9a, 9b separated from the print head.
  • the cleaning fluid enters via the flow in the print head 6 and rinses dirt particles and ink residues, preferably under pressure, in the bottle 1.
  • the valves 9a, 9b are switched back and the pressure fluid supply system 7 to the Printhead 6 connected.
  • the detergent system 10a, 10b is separated from the print head 6.
  • the cleaning liquid is now driven out of the printhead 6 by the reconnected ink and conveyed into the bottle 1. Now the print head 6 is available again for printing purposes.
  • the liquids (ink, cleaning liquid) sprayed into the bottle 1 collect below the opening 5 in the reservoir 11.
  • the bottle 1 can be transported to the next print head 6, which is cleaned according to the method described above.
  • the bottle 1 can be removed along the transport system from the plant, the liquid collected in it can be easily disposed of outside the system. After cleaning, the cleaning adapter 1 can be used again.
  • FIG. 3 A further education of in Fig. 1 shown cleaning adapter 1 is in Fig. 3 shown.
  • a bottle cleaning adapter 1 in a plan view along the YY line Fig. 1 shown.
  • This bottle 1 differs from the one in the Fig. 1 illustrated bottle 1 but in that it has additional openings 5 and an inner partition 12. The total of four openings 5 are evenly distributed over the circumference of the bottle 1.
  • the Subdivision 12 within the bottle 1 is made up of intersecting walls which prevent liquid sprayed from the nozzles of a printhead 6 into an opening 5 from escaping from the other openings 5 again, thus causing soiling.
  • segment-like chambers 13 form for each of the openings 5.
  • the walls of the subdivision 12 of each segment chamber 13 are aligned obliquely to the opening 5, so that liquid which is injected from the print head 6 into the segment chamber 13, can not get back directly to the opening 6. In this way, it is effectively avoided that injected liquid injected back through the opening 5 to the outside and a resulting color mist the environment and the print head 6 again dirty.
  • FIG. 4 shows the cleaning adapter 1 in a side view
  • Fig. 5 in a sectional view along the line XX Fig. 4
  • the bottle 1 has a central or central bottle body 3 and a bottle neck 2, wherein the bottle body 3 tapers conically towards the bottle neck 2.
  • An upper opening 4 is provided at the outer end of the bottle neck 2, as common in bottles.
  • a region 14 set back towards the interior of the bottle 1 with two openings 5 located opposite one another.
  • a membrane 15 is arranged which covers and closes the opening 5.
  • a wiper element 16 is arranged in the form of a sponge. In the Fig. 5 the bottle 1 is aligned towards a printhead 6 to be cleaned.
  • Air pressure is passed through the upper opening 4 via the neck 2 into the bottle 1 via a compressed air supply 17.
  • the pressure medium supply 17 has a line 18 for carrying out the compressed air and has at its the bottle 1 end facing a conically tapered in directions of the line 18 centering 19, by means of which the line 18 and the bottle 1 as in Fig. 6 are centered on each other and which ensures a firm, sealing connection of the compressed air supply to the bottle 1.
  • the pressure in the bottle 1 rises.
  • the membranes 15 expand due to the increased internal pressure to the outside. They act as traversing device 15 and bring the sponge 16 attached to them directly to the print head 6 zoom.
  • the sponge 16 abuts the surface of the print head 6 and can absorb ink and debris.
  • an additional stroke 20 is indicated, with which the cleaning of the print head 6 can be improved.
  • the sponge 16 wipes along the surface of the print head 6. It collects all dirt mechanically and takes on its suction in addition also existing ink residues etc. on.
  • the air pressure can be reduced again via the compressed air supply 18, whereby the membranes 15 relax and move the wiper element 16 again in the direction of the bottle interior.
  • a suction nozzle 21 is provided, which of the above-described pressure system separated arranged in a vacuum chamber 22 and aligned with a suction opening in the direction of the print head 6 and is alignable.
  • the suction nozzle 21 sucks from the print head 6 emerging ink or cleaning liquid from, wherein the suction nozzle 21 according to the lifting movement 20 relative to the print head 6 can be moved up and down.
  • a not shown, battery or akkumulator Seaene pump is provided in the vacuum chamber 22, which is able to in the relatively small volume of the opposite to the rest of the bottle 1 closed vacuum chamber for the Aspirate to produce suitable negative pressure.
  • Fig. 6 represents an overpressure system and a vacuum system in a bottle 1
  • the invention also relates to cleaning adapter 1, in particular in bottle form, in which only an overpressure system or only a vacuum system is implemented as described in each case for themselves.
  • the bottle 1 can be further transported and removed from the system.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Ink Jet (AREA)

Claims (9)

  1. Adaptateur de nettoyage pour le nettoyage de têtes d'impression (6) dans une installation d'impression de récipients tridimensionnels, cette installation comprenant une machine d'impression qui présente au moins une tête d'impression (6) réalisée sous forme d'une tête d'impression à jet d'encre, et un système de transport grâce auquel les récipients imprimés sont emportés pour impression vers l'au moins une tête d'impression (6), une zone à imprimer sur le récipient étant positionnée en amont de la tête d'impression (6), le récipient étant déplacé devant la tête d'impression (6) et alors imprimé avec des encres d'impression liquides à l'aide de la tête d'impression à jet d'encre, et l'adaptateur de nettoyage (1) étant conçu pour que l'adaptateur de nettoyage (1) puisse être rentré à la place d'un récipient à imprimer dans le système de transport et puisse être approché par le système de transport à des fins de nettoyage de la tête d'impression (6) et soit positionnable en amont de la tête d'impression, caractérisé en ce que l'adaptateur de nettoyage (1) est constitué par un récipient creux du moins par sections qui présente au moins une ouverture (5), l'adaptateur de nettoyage (1) présentant, dans les zones de l'adaptateur de nettoyage (1) dans lesquelles le système de transport s'engrène pendant le transport au niveau de l'adaptateur de nettoyage (1), une forme extérieure correspondant avec le récipient imprimé, de sorte que le positionnement de l'adaptateur de nettoyage (1) se fait en utilisant le système de transport pour les récipients à imprimer.
  2. Adaptateur de nettoyage selon la revendication 1, caractérisé en ce que l'espace intérieur de récipient de l'adaptateur de nettoyage (1) est divisé en segments, un segment (13) étant de préférence associé à chaque ouverture (5).
  3. Adaptateur de nettoyage selon une des revendications précédentes, caractérisé en ce que l'adaptateur de nettoyage (1) présente au moins un élément d'essuyage (16) pour nettoyer la tête d'impression (6).
  4. Adaptateur de nettoyage selon une des revendications précédentes, caractérisé par une ou plusieurs buses d'aspiration (21) pour aspirer le liquide excédentaire de la surface de la tête d'impression (6).
  5. Procédé de nettoyage de têtes d'impression (6) dans une installation d'impression de récipients tridimensionnels, dans lequel les récipients à imprimer dans l'installation sont emportés par un système de transport pour impression vers au moins une tête d'impression (6) et une zone à imprimer sur le récipient est positionnée en amont de la tête d'impression (6), caractérisé en ce qu'au moins un adaptateur de nettoyage (1) selon une des revendications précédentes est rentré dans le système de transport et approché par le système de transport à des fins de nettoyage de la tête d'impression (6) et est positionné en amont de la tête d'impression.
  6. Procédé selon la revendication 5, caractérisé en ce que, pour le nettoyage, de l'encre et/ou de la solution de nettoyage ou de lavage est expulsée des buses de la tête d'impression (6).
  7. Procédé selon la revendication 5 ou 6, caractérisé en ce que, pour le nettoyage, l'adaptateur de nettoyage (1) est sollicité par l'intérieur avec de la pression.
  8. Procédé selon une des revendications 5 à 7, caractérisé en ce que l'au moins un adaptateur de nettoyage (1) présentant un élément d'essuyage (16) pour le nettoyage de la tête d'impression (6) est déplacé par rapport à la tête d'impression (6) de manière à ce que la tête d'impression (6) soit nettoyée mécaniquement par essuyage.
  9. Installation d'impression de récipients tridimensionnels, comprenant une machine d'impression qui présente au moins une tête d'impression (6) réalisée sous forme d'une tête d'impression à jet d'encre devant laquelle on fait passer les récipients et on les imprime avec des encres d'impression liquides à l'aide de la tête d'impression à jet d'encre, et un système de transport grâce auquel les récipients à imprimer peuvent être conduits dans l'installation d'impression vers au moins une tête d'impression (6), caractérisée en ce que l'installation est conçue de manière à ce que le nettoyage de l'au moins une tête d'impression (6) ait lieu selon le procédé selon une des revendications 5 à 8.
EP14766692.9A 2013-09-13 2014-09-12 Adaptateur de nettoyage et procede de nettoyage de têtes d'impression Active EP3044000B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013110122.4A DE102013110122A1 (de) 2013-09-13 2013-09-13 Reinigungsadapter und Verfahren zum Reinigen von Druckköpfen
PCT/EP2014/069536 WO2015036559A1 (fr) 2013-09-13 2014-09-12 Adaptateur de nettoyage et procédé de nettoyage de têtes d'impression

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EP3044000A1 EP3044000A1 (fr) 2016-07-20
EP3044000B1 true EP3044000B1 (fr) 2018-10-31

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US (1) US9944081B2 (fr)
EP (1) EP3044000B1 (fr)
DE (1) DE102013110122A1 (fr)
WO (1) WO2015036559A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE102014225405A1 (de) * 2014-12-10 2016-06-16 Krones Ag Direktdruckmaschine zur Bedruckung von Behältern
JP6839508B2 (ja) * 2016-09-13 2021-03-10 株式会社ミマキエンジニアリング 印刷装置及び発色制御方法
JP6904028B2 (ja) * 2017-04-11 2021-07-14 株式会社リコー 液体を吐出する装置、メンテナンス方法

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DE4035507A1 (de) * 1989-11-09 1991-06-13 Dataproducts Corp Vorrichtung und verfahren zur pflege von tintenstrahldruckkoepfen
US5572245A (en) 1994-03-10 1996-11-05 Hewlett-Packard Company Protective cover apparatus for an ink-jet pen
DE19740396A1 (de) * 1997-09-05 1999-03-11 Francotyp Postalia Gmbh Druckeinrichtung und Verfahren für den Druck auf einen Druckträger
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DE102006052154A1 (de) 2006-11-02 2008-05-08 Kba-Metronic Ag Vorrichtung zur Reinigung von Tintenstrahldruckköpfen
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Publication number Publication date
US20160214386A1 (en) 2016-07-28
EP3044000A1 (fr) 2016-07-20
DE102013110122A1 (de) 2015-03-19
WO2015036559A1 (fr) 2015-03-19
US9944081B2 (en) 2018-04-17

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