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
  • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
  • B41J11/0085—Using suction for maintaining printing material flat
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
  • B31B50/02—Feeding or positioning sheets, blanks or webs
  • B31B50/04—Feeding sheets or blanks
  • B31B50/07—Feeding sheets or blanks by air pressure or suction
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
  • B31B50/74—Auxiliary operations
  • B31B50/88—Printing; Embossing
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
  • B65H5/22—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device
  • B65H5/222—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by suction devices
  • B65H5/224—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by suction devices by suction belts
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
  • B31B50/02—Feeding or positioning sheets, blanks or webs
  • B31B50/04—Feeding sheets or blanks
  • B31B50/06—Feeding sheets or blanks from stacks
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2406/00—Means using fluid
  • B65H2406/30—Suction means
  • B65H2406/31—Suction box; Suction chambers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2406/00—Means using fluid
  • B65H2406/30—Suction means
  • B65H2406/36—Means for producing, distributing or controlling suction
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2406/00—Means using fluid
  • B65H2406/40—Fluid power drive; Fluid supply elements
  • B65H2406/41—Valves
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2406/00—Means using fluid
  • B65H2406/40—Fluid power drive; Fluid supply elements
  • B65H2406/42—Distribution circuits
  • B65H2406/423—Distribution circuits distributing fluid from stationary elements to movable element
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2701/00—Handled material; Storage means
  • B65H2701/10—Handled articles or webs
  • B65H2701/17—Nature of material
  • B65H2701/176—Cardboard
  • B65H2701/1764—Cut-out, single-layer, e.g. flat blanks for boxes

Definitions

• Vacuum transport method and vacuum chamber for an ink jet printing machine, and ink jet printing machine are Vacuum transport method and vacuum chamber for an ink jet printing machine, and ink jet printing machine.
• the invention relates to the field of vacuum transport and more particularly the vacuum transport of cardboard plate elements in inkjet printing machines.
• Vacuum transport devices are known: these devices make it possible to accurately transport cardboard plate elements within machines by pressing them against strips or conveyor belts under which one or more vacuum boxes are located.
• the conveyor belts or conveyor belts are conventionally provided with holes for the vacuum effect to properly apply to the transported cartonboard elements.
• These transport devices have been designed in particular for the transport of flat or corrugated boardboard elements, in printing or converting machines, particularly in the packaging manufacturing industry.
• These cardboard sheet elements are frequently of large size, they are fragile and can be damaged by roller transport devices, the latter being more particularly adapted to the sheets, for example sheets of paper or fabric, which support the pressure and are flexible.
• the invention particularly aims to overcome all or part of these disadvantages of the prior art.
• ink composition comprising a vacuum transport device and at least one print head.
• a vacuum effect is applied through the vacuum transport device to each cardboard plate element when it passes under a print head and during a phase of shutter, the vacuum effect is interrupted under any print head below which passes an interval separating two plate elements.
• the succession of the plating and sealing phases ensures a good positioning of the substrates under the printing heads, while avoiding the formation of turbulence when a gap between two plate elements passes under a print head.
• the print quality is optimal over the entire surface of the substrate, including in areas near the front and rear edges of the plate member.
• the vacuum effect can also be interrupted under a print head by one or more additional shutter phases.
• one or more shutter phases interrupt the vacuum effect fleetingly under the substrate without affecting the quality of printing, which simplifies the implementation of the process.
• the invention also relates to a vacuum chamber for transporting cardboard plate elements in an inkjet printing machine comprising a vacuum transport device and at least one printing head, said vacuum chamber comprising a shutter device for interrupting the vacuum effect.
• a vacuum chamber according to the invention can be connected to a standard vacuum box or directly placed inside such a box, and allows to implement the transport method according to the invention, thanks to the shutter device allowing to interrupt the vacuum effect.
• the shutter device makes it possible to interrupt the vacuum effect on a surface substantially corresponding to the printing zone of an inkjet printing head.
• the vacuum effect is interrupted only in an area where it could generate turbulence harmful to the print quality in areas near the front and rear edges of the substrate.
• the shutter device is rotatable.
• the control of the implementation of the transport method is simplified and achieves high printing rates.
• the shutter device can be oscillating.
• the vacuum chamber comprises a device for adjusting the length of application of the vacuum effect.
• the vacuum effect can be applied over a length corresponding for example to the width of the substrate, to eliminate the risk of turbulence detrimental to the quality of printing in areas near the lateral edges of the substrate.
• the invention also relates to an inkjet printing machine comprising a vacuum transport device for transporting cardboard sheet elements, a print head for inkjet printing on the plate elements and a vacuum chamber as defined above.
• a vacuum transport device for transporting cardboard sheet elements
• a print head for inkjet printing on the plate elements
• a vacuum chamber as defined above.
• Such a machine is capable of ink jet printing on cartonboard members at a high rate while providing good print quality even in areas near the front and back edges of the substrates.
• an ink jet printing machine comprises a device for detecting the edge of the cardboard plate elements and a control device capable of synchronizing the rotation of the shutter device with the detection of the edge of a plate element.
• Fig. 1 schematically shows an inkjet printing machine according to the invention
• FIG. 2 to FIG. 4 represent different steps of a vacuum transport method and a vacuum chamber according to the invention
• Fig. 5 represents another example of a vacuum chamber according to the invention.
• FIG. 1 Shown schematically in FIG. 1 an inkjet printing machine
• a stack of cardboard plate elements is arranged in an insertion station 11.
• the cardboard plate elements 12 are deposited one after the other on a device
• Many types of introductory stations have been described which, for example, enable the cardboard plate element on the top of a substantially horizontal pile to be grasped, or the element at the base of such a battery, or even using inclined batteries, or even a manual introduction. All types of introduction station can be used for the implementation of the invention.
• Fig. 1 represents a succession of four elements in cardboard plates 12, carried by the transport device 13.
• the transport device 13 shown is a carpet through which there are numerous openings for applying a vacuum effect to the cardboard plate elements 12.
• Any type of vacuum transport device 13 may naturally be used in the context of the invention in place of the carpet, such as for example a plurality of vacuum strips.
• the cardboard plate elements 12 are held by the vacuum effect on the transport device 13 which moves them under one or more inkjet printing heads 14.
• the machine shown in FIG. 1 has four printhead bars 14, but the invention relates to inkjet printing machines having any number of printhead bars 14.
• print head 14 will be used to designate a print head bar, each bar having one or more printheads aligned to produce a continuous print throughout the length of the print head. the print bar 14.
• the vacuum effect is applied to each carton element 12 as it passes under a print head 14; and during a shutter phase shown in FIG. 3, the vacuum effect is interrupted under any print head 14 below which passes an interval separating two successive cardboard board members 12 and 12 '.
• the plating phase ensures an excellent position of the substrate 12 on which the ink is projected, and thus to obtain excellent print quality.
• the shutter phase avoids that the vacuum effect generates turbulence when a gap between two successive cardboard plate members 12 and 12 'passes under a print head 14.
• the closing phase ends when a new cardboard plate member 12 'is under the print head 14. Then begins a new plating phase of the cardboard plate member 12' on the device vacuum transport 13.
• the print head 14 projects ink with good print quality, including the areas near the trailing edge and the leading edge respectively of the cardboard plate members 12 and 12 '.
• the invention also relates to a vacuum chamber 20 for transporting cardboard plate elements 12 in an inkjet printing machine 10 comprising a vacuum transport device 13 and at least one printing head 14.
• the chamber 20 comprises a shutter device 21 for interrupting the vacuum effect.
• the printing machine 10 shown in FIG. 1 comprises four vacuum chambers 20 according to the invention, each placed under the transport device 13 facing a printing head 14.
• FIG. 2 The operation of a vacuum chamber 20 according to the invention is illustrated in FIG. 2 to
• FIG. 4 The vacuum chamber 20 shown in FIG. 2 to FIG. 4 is placed under the transport 13, facing a print head 14, in a larger vacuum box not shown.
• the vacuum chamber allows the application of the vacuum effect to a substrate 12 passing under a print head 14 which can project ink to the surface of the substrate.
• the closure device 21 of the vacuum chamber 20 interrupts the vacuum effect when a gap between two successive plate elements 12 and 12 'passes under the print head 14.
• the shutter device 21 makes it possible to interrupt the vacuum effect on an interruption surface substantially equal to the printing surface of a print head 14.
• the surface interruption is defined by the space between two cardboard plates 22, but many other examples of construction in accordance with the invention are conceivable by the person skilled in the art.
• the shutter device 21 is of rotary type.
• the shutter device 21 may be oscillating, or even perform translational movements.
• the parallelepipedal shape of the chamber 20 on the FIG. 1 to Fig. 4 serves only to materialize the location in the room within a machine, but is not limiting.
• the vacuum chamber 20 takes the form of a cylinder containing a shutter device 21, said shutter device 21 rotating or oscillating about the cylinder axis.
• the vacuum effect is generated within a box in which is placed or to which the vacuum chamber 20 is connected, an opening in the cylinder of the chamber 20 for propagating the vacuum effect inside the cylinder and then the to apply to a plate element 12 of cardboard.
• the vacuum chamber 20 may comprise an adjustment device 23 of the length L of application of the vacuum effect.
• the adjustment device 23 makes it possible to adjust the length L of the zone of application of the vacuum effect to the width of the element made of cardboard plate 12.
• the vacuum effect does not produce turbulence on the edges. side of the cardboard plate elements 12 which ensures good print quality on the substrate areas close to these edges.
• the adjusting device 23 takes the form of a cylinder which fits into the cylindrical shape of the chamber 20 so as to limit the propagation of the vacuum effect within the chamber 20.
• Other constructions of the adjustment device 23 are naturally conceivable for the person skilled in the art, such as for example a sliding shutter on the surface of the plates. carton 22.
• the invention also relates to a printing machine 10 implementing the vacuum transport method, comprising a vacuum transport device 13 for transporting cardboard plate elements 12, a printing head 14 intended to print by jet d ink on the cardboard plate elements 12, and a vacuum chamber 20 having a shutter device 21 for interrupting the vacuum effect, said vacuum chamber being placed under the print head 14.
• the 10 comprises four print heads 14, and four vacuum chambers 20. These vacuum chambers can be placed each in a different vacuum box, or several in a single box, or all four in a single box. The shape and the number of vacuum boxes are therefore not decisive for the invention. Naturally, the invention relates to machines comprising at least one printing head 14 and a vacuum chamber 20.
• the printing machine 10 comprises a device 15 for detecting the edge of the cardboard plate elements 12, and a control device 16 for synchronizing the rotation of the shutter device 21 with the detection of the edge of a cardboard plate element 12.
• the device for detecting the edges of the cardboard plate elements 12 may for example comprise an optical sensor, or a mechanical sensor. Many other constructions of the detection device 15 are conceivable by the person skilled in the art without departing from the scope of the invention.
• the control device 16 is of the microprocessor or microcontroller type. On the basis of the signals emitted by the detection device 15, it synchronizes the closure device 21 of each of the vacuum chambers 20 with the detection of the edges of the cardboard plate elements 12.
• control device 16 can also furtively interrupt the vacuum effect when a cardboard plate element 12 passes under a print head 14.
• the shutter devices 21 are of rotary type, when the rate of the printing machine 10 is high and when the intervals between two plate elements successive cardboard 12 and 12 'vary little, this control mode makes it possible to vary the rotation of the shutter devices 21 by limiting abrupt acceleration and deceleration.
• This mode of operation corresponds to the vacuum transport method according to the invention as defined above but where, during the plating phase, the vacuum effect is also interrupted under a print head 14 by one or more shutter phases additional.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Handling Of Sheets (AREA)
• Ink Jet (AREA)
• Delivering By Means Of Belts And Rollers (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=54708048

Family Applications (1)

Country Status (6)

Families Citing this family (3)

Family Cites Families (12)

• 2015
  • 2015-10-23 FR FR1560173A patent/FR3042734A1/fr active Pending
• 2016
  • 2016-10-21 CN CN201680062076.4A patent/CN108137252A/zh active Pending
  • 2016-10-21 WO PCT/EP2016/075470 patent/WO2017068167A1/fr not_active Ceased
  • 2016-10-21 JP JP2018521299A patent/JP2019502614A/ja active Pending
  • 2016-10-21 EP EP16791341.7A patent/EP3377430A1/de not_active Withdrawn
• 2018
  • 2018-04-12 IL IL258678A patent/IL258678A/en unknown

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