EP3530473A1 - Dispositif de réglage de tête d'impression - Google Patents

Dispositif de réglage de tête d'impression Download PDF

Info

Publication number
EP3530473A1
EP3530473A1 EP18158032.5A EP18158032A EP3530473A1 EP 3530473 A1 EP3530473 A1 EP 3530473A1 EP 18158032 A EP18158032 A EP 18158032A EP 3530473 A1 EP3530473 A1 EP 3530473A1
Authority
EP
European Patent Office
Prior art keywords
gear
gears
screw
screws
rail
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
Application number
EP18158032.5A
Other languages
German (de)
English (en)
Other versions
EP3530473B1 (fr
Inventor
Andreas MÜLLER
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Priority to EP18158032.5A priority Critical patent/EP3530473B1/fr
Priority to CN201811598409.2A priority patent/CN110181947B/zh
Priority to US16/252,071 priority patent/US10737516B2/en
Priority to JP2019029111A priority patent/JP7206128B2/ja
Publication of EP3530473A1 publication Critical patent/EP3530473A1/fr
Application granted granted Critical
Publication of EP3530473B1 publication Critical patent/EP3530473B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/304—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface
    • 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
    • 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
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • 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
    • B41J2/145—Arrangement thereof
    • B41J2/155—Arrangement thereof for line printing
    • 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
    • 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
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • 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
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/001—Mechanisms for bodily moving print heads or carriages parallel to the paper surface
    • 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
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/001—Mechanisms for bodily moving print heads or carriages parallel to the paper surface
    • B41J25/003—Mechanisms for bodily moving print heads or carriages parallel to the paper surface for changing the angle between a print element array axis and the printing line, e.g. for dot density changes
    • 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
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/304—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface
    • B41J25/308—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with print gap adjustment mechanisms
    • 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
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/304—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface
    • B41J25/316—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with tilting motion mechanisms relative to paper surface
    • 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
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/34—Bodily-changeable print heads or carriages
    • 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
    • B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
    • 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
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/19—Assembling head units
    • 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
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/20—Modules
    • 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
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/21—Line printing

Definitions

  • the present invention relates to a device for adjusting printheads of a printing bar.
  • Pressure bars are used for page-wide printing, eg. B. for inkjet printing.
  • a pressure bar has a series of printheads that need to be adjusted relative to each other.
  • each module comprises an adjusting device for adjusting the modules relative to each other and there is a carriage, which is movable in succession to the modules and has an actuating device for actuating the actuating devices.
  • a first motor rotates a drive spindle which drives the carriage.
  • Each module has an adjustment spindle on which a Justagerad sits. By adjusting the carriage in opposition to a module to be adjusted, the drive wheel is brought into meshing engagement with the Justagerad.
  • the drive wheel When meshed, the drive wheel can drive the adjustment wheel to adjust the module.
  • a disadvantage is the long set-up time, which is required for the adjustment of all modules. Since all modules are adjusted one after the other by a single, common slide, the adjustment takes a very long time overall.
  • the object of the invention is to provide an adjustment device that allows a short set-up time.
  • a device for adjusting printheads of a pressure beam which is characterized in that motors are arranged in a row and mounted together displaceable, that each motor carries a gear and that each gear is successively engageable with at least two gears in each case.
  • Advantage of the device according to the invention is that with this a temporally parallel adjustment of several print heads is possible. This saves set-up time.
  • FIGS. 1 to 4 are mutually corresponding components designated by the same reference numerals.
  • FIG. 1 shows a printing machine 1 with several identical pressure bar 2. Each print bar 2 prints in the page-ready inkjet another color.
  • FIG. 2 shows an example of the pressure bar 2, the printheads 3 in a row.
  • Each print head 3 has a nozzle plate 4 with nozzles for ejecting the ink.
  • Each printhead 3 has a first screw 5 and second screw 6 associated therewith to adjust the printhead 3 relative to the adjacent printhead 3.
  • Each screw 5, 6 adjusts another degree of freedom of the printhead 3; in the example, the first screw 5, the rotation about the axis z (pressure bar vertical axis) and the second screw 6, the translation along the axis x (pressure bar longitudinal axis).
  • the axis y (pressure bar transverse axis) of the orthogonal coordinate system is parallel to the printing material transport direction.
  • the screws 5, 6 are identical, which is why only the first screw 5 is described in detail.
  • the screw 5 has a cone 7, on which the print head 3 rests via a button 8. Cone 7 and button 8 together form a thrust wedge gear. If the screw 5 is screwed deeper, the cone 7 presses the print head 3 in the required direction.
  • the screw 5 has all around a ring of equally distributed wells 9, in which a spring-loaded pressure piece 10 engages.
  • the troughs 9 form a multiple catch.
  • the pressure piece 10 can engage in each screwing depth of the screw 5 in the troughs 9, these are formed as grooves which extend parallel to the axis of rotation of the screw 5.
  • the screw 5 has a gear 11 whose number of teeth corresponds to the number of wells 9.
  • the multiple catch ensures that the screw 5 stops in stepwise rotation only in those angular positions corresponding to tooth engagement positions of the gear 11.
  • the gear 11 can sit on a shaft of the screw 5 or be formed on the screw 5 as a screw head.
  • the multiple catch could be formed by the gear 11 together with the pressure piece 10, wherein this engages in the tooth gaps of the gear 11. This would save space.
  • motors 13 are mounted in a row which is parallel with the row of screws 5, 6.
  • the rail 12 is in parallel with the row of screws 5, 6 parallel direction, ie parallel to the axis x, preferably by a drive 14, for. B. a pneumatic cylinder, slidably mounted.
  • a drive 14 for. B. a pneumatic cylinder, slidably mounted.
  • the rail 12 or series of motors 13 could be manually displaceable parallel to the axis x.
  • Each motor 13 is used to drive the two screws 5, 6 of another printhead 3. With advantageously only one motor 13 per printhead 3, this is thus adjusted with respect to both degrees of freedom.
  • a gear 15 and a locking disc 16 On a shaft of the motor 13 sit a gear 15 and a locking disc 16, in which wells a spring-loaded pressure piece 17 engages.
  • the locking disk 16 and the pressure piece 17 together form a multiple catch.
  • the number of teeth of the gear 15 corresponds to the number of troughs of the locking disk 16.
  • 16 could be formed by the gear 15 together with the pressure piece 17 in the absence of the locking disc 16, the latter engages in the tooth gaps of the gear 15. This would save space.
  • the multiple catch could be completely eliminated if the rotational position of the motor 13 is detected and regulated for the correct meshing.
  • the tooth length of the gear 15 is extended, so that when screwing the screw 5 despite the axial movement of the driven gear 11, this is not disengaged from the gear 15.
  • the gear 15 is formed as a toothed shaft.
  • the gears 11 could be formed as splines at normal Vernierungswin of the gear 15.
  • the axis of rotation of the gear 15 is oriented parallel to the axis of rotation of the gears 11 of the screws 5, 6.
  • the gears 11, 15 are spur gears with straight teeth.
  • FIGS. 3a to 3c For example, various positions of the gear 15 relative to the gears 11 of the screws 5, 6 are shown, these positions being adjusted by the displacement of the rail 12.
  • the axes of rotation or centers of all gears 11, 15 of the pressure bar 2 and the adjusting device lie on a common, straight line. It does not matter if the motor gear 15 is smaller (as in Fig. 3a - 3c ) or larger than the helical gears 11 in diameter or the same size (as in Fig. 2 ).
  • FIG. 3a shows a mean neutral position of the gear 15, in which there is enough air or clearance between this and the two adjacent gears 11 to handle the printhead 3 without collision hazard for the gears 11 when inserting the print head 3 in the pressure bar 2.
  • the gear 15 In the neutral position, the gear 15 is engaged with no gear 11 and is ensured by the multiple notches of the screws 5, 6 and the gear 15, that the gear 15 with respect to the gears 11 of both screws 5, 6 in an operable gap-tooth rotational angular position stands.
  • FIG. 3b shows the gear 15 is moved to a position with engagement with the gear 11 of the screw 6 to the right and
  • Figure 3c shows the gear 15 is displaced in an opposite position with engagement in the gear 11 of the other screw 5 to the left, wherein in these two positions, the motor 13 drives a screw 5 and 6, respectively. By moving the motor 13 with its gear 15, this is brought in succession in the radial direction with the two gears 11 into engagement.
  • the motors 13 may operate in parallel to adjust all the printheads 3 first with respect to one degree of freedom and then with respect to the other.
  • the motors 13 can be controlled individually, z. B. when a print head 3 by a different level than another print head 3 with respect to the axis x must be adjusted.
  • FIG. 4 shows a modification in which three or more gears 11 are driven by one or more print heads 3 by a common motor with a gear 15 in succession.
  • the gear 15 is adjusted with the rail along a line L, which runs parallel to a common tangent of the gears 11.
  • the gear 15 rotates the gear 15. If the distance a between the axes of rotation of the gears 11 is a multiple of the tooth spacing of the teeth of the gear 11, the gear 15 moves as if rolling on a virtual rack. If the distance a is not said multiple, the gear 15 does not rotate during its entire translation, but only in the areas of the teeth of the gears 11 and the motor of the gear 15 is driven accordingly.

Landscapes

  • Ink Jet (AREA)
  • Common Mechanisms (AREA)
EP18158032.5A 2018-02-22 2018-02-22 Dispositif de réglage de tête d'impression Active EP3530473B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP18158032.5A EP3530473B1 (fr) 2018-02-22 2018-02-22 Dispositif de réglage de tête d'impression
CN201811598409.2A CN110181947B (zh) 2018-02-22 2018-12-26 印刷头调整装置
US16/252,071 US10737516B2 (en) 2018-02-22 2019-01-18 Print head adjustment device
JP2019029111A JP7206128B2 (ja) 2018-02-22 2019-02-21 印刷ヘッド調整装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18158032.5A EP3530473B1 (fr) 2018-02-22 2018-02-22 Dispositif de réglage de tête d'impression

Publications (2)

Publication Number Publication Date
EP3530473A1 true EP3530473A1 (fr) 2019-08-28
EP3530473B1 EP3530473B1 (fr) 2020-07-15

Family

ID=61256771

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18158032.5A Active EP3530473B1 (fr) 2018-02-22 2018-02-22 Dispositif de réglage de tête d'impression

Country Status (4)

Country Link
US (1) US10737516B2 (fr)
EP (1) EP3530473B1 (fr)
JP (1) JP7206128B2 (fr)
CN (1) CN110181947B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202000019255A1 (it) * 2020-08-05 2022-02-05 Durst Austria Gmbh Sistema di stampa con attuatore di regolazione per la regolazione di diverse testine di stampa
DE102023107319B3 (de) 2023-03-23 2024-02-15 Heidelberger Druckmaschinen Aktiengesellschaft Vorrichtung zur Justage eines Druckkopfes

Families Citing this family (1)

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US11827035B2 (en) 2021-10-01 2023-11-28 Xerox Corporation System and method for printing color images on substrates in an inkjet printer

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US20090244124A1 (en) * 2008-04-01 2009-10-01 Olympus Corporation Image recording apparatus
DE102016209945A1 (de) 2015-07-07 2017-01-12 Heidelberger Druckmaschinen Ag Drucker
DE102016214253A1 (de) * 2016-08-02 2018-02-08 Koenig & Bauer Ag Positioniereinrichtung zum Einstellen einer Lage zumindest einer zumindest einen Druckkopf aufweisenden Baugruppe

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US20090244124A1 (en) * 2008-04-01 2009-10-01 Olympus Corporation Image recording apparatus
DE102016209945A1 (de) 2015-07-07 2017-01-12 Heidelberger Druckmaschinen Ag Drucker
DE102016214253A1 (de) * 2016-08-02 2018-02-08 Koenig & Bauer Ag Positioniereinrichtung zum Einstellen einer Lage zumindest einer zumindest einen Druckkopf aufweisenden Baugruppe

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202000019255A1 (it) * 2020-08-05 2022-02-05 Durst Austria Gmbh Sistema di stampa con attuatore di regolazione per la regolazione di diverse testine di stampa
WO2022028733A3 (fr) * 2020-08-05 2022-04-21 Durst Group Ag Système d'impression avec actionneur d'ajustement pour l'ajustement de plusieurs têtes d'impression
DE102023107319B3 (de) 2023-03-23 2024-02-15 Heidelberger Druckmaschinen Aktiengesellschaft Vorrichtung zur Justage eines Druckkopfes

Also Published As

Publication number Publication date
EP3530473B1 (fr) 2020-07-15
US20190255867A1 (en) 2019-08-22
CN110181947A (zh) 2019-08-30
US10737516B2 (en) 2020-08-11
JP2019142224A (ja) 2019-08-29
JP7206128B2 (ja) 2023-01-17
CN110181947B (zh) 2021-03-12

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