EP3527390B1 - Dispositif d'ajustement d'une tête d'impression - Google Patents

Dispositif d'ajustement d'une tête d'impression Download PDF

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Publication number
EP3527390B1
EP3527390B1 EP18156645.6A EP18156645A EP3527390B1 EP 3527390 B1 EP3527390 B1 EP 3527390B1 EP 18156645 A EP18156645 A EP 18156645A EP 3527390 B1 EP3527390 B1 EP 3527390B1
Authority
EP
European Patent Office
Prior art keywords
screw
spring
holder
cone
head
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
EP18156645.6A
Other languages
German (de)
English (en)
Other versions
EP3527390A1 (fr
Inventor
Andreas MÜLLER
Dr. Burkhard Wolf
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 EP18156645.6A priority Critical patent/EP3527390B1/fr
Priority to CN201910112406.1A priority patent/CN110154529B/zh
Priority to JP2019000496U priority patent/JP3221875U/ja
Publication of EP3527390A1 publication Critical patent/EP3527390A1/fr
Application granted granted Critical
Publication of EP3527390B1 publication Critical patent/EP3527390B1/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
    • B41J25/001—Mechanisms for bodily moving print heads or carriages parallel to the paper surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • 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
    • 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
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04505—Control methods or devices therefor, e.g. driver circuits, control circuits aiming at correcting alignment
    • 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
    • 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
    • B41J29/393—Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns

Definitions

  • the present invention relates to a device for adjusting a printhead, comprising a holder, a screw with a cone, the screw being screwed into the holder and the printhead resting on the cone.
  • Adjustment devices are used for this purpose, each of which has a screw with a cone.
  • the respective printhead lies directly on the cone or indirectly via an intermediate piece.
  • the cone forms a thrust wedge gear, which converts an axial movement of the screw into a radial movement of the printhead.
  • the object of the invention is to provide an adjustment device for a printhead that works precisely.
  • a device for adjusting a print head which comprises a holder and a screw with a cone, the screw being screwed into the holder and the print head resting on the cone.
  • the device according to the invention is characterized in that a spring is present in order to reduce a thread play between the holder and the screw, and in that there is a detent in order to determine an increment when the screw is turned.
  • the device according to the invention works with high precision because the spring compensates for the play between the external thread of the screw and the internal thread of the holder.
  • An additional advantage of the spring is its effect as securing the screw against unintentional twisting.
  • the thread friction is increased by the spring and the screw is thereby braked so that it cannot turn itself.
  • the step-by-step or step-by-step turning of the screw which is made possible by the detent, enables a more precise adjustment than the stepless turning of the screw in the prior art.
  • the detent ensures that a very precise adjustment movement with haptic feedback can be transmitted with each detent step. This reliably prevents oversteering and understeering.
  • a head of the screw can form a locking disk of the locking.
  • the detent can have grooves that run axially parallel with the screw.
  • the spring can be arranged so that it acts axially with respect to the screw.
  • the spring can be placed on the screw.
  • the spring is arranged such that it acts radially with respect to the screw.
  • the holder can have a clamping bush which is loaded by the spring.
  • Figure 1 shows a printing press with a plurality of printing bars 1 for inkjet printing on printing material made of paper or cardboard.
  • the printing material is in the form of a sheet, but could also be in the form of a web.
  • the pressure bars 1 are structurally identical, so that only one pressure bar 1 needs to be described.
  • the print bar 1 has print heads 2 in a row that are perpendicular to the plane of the drawing Figure 1 runs. The row of print heads 2 extends across the width of the format of the printing material and the printing bar 1 is used for page-wide printing.
  • An adjustment device is associated with each print head 2, with which the print head 2 can be adjusted relative to its adjacent print heads 2. This adjustment movement of the print head 2, which is driven by the adjustment device, can be translational or rotary.
  • the adjustment device in the Figures 2 and 3 comprises a holder 9 into which a screw 4 is screwed.
  • the screw 4 has a cone 7, against which the print head 2 rests via an intermediate piece.
  • the screw 4 has a head 8, which serves as a handle or rotary knob for turning the screw 4 without tools.
  • a catch 9 which comprises a spring-loaded pressure piece 11, for example a ball, and index depressions.
  • the detent 9 is a multiple detent.
  • the Pressure piece 11 enters a different index recess with each turning step of screw 4.
  • the screw 4 is thus rotated in a very controlled manner, index-by-index.
  • the row of index depressions is introduced along the circumference of a locking disk, the index depressions being uniformly distributed at a constant angular distance from one another.
  • the locking disc is formed by the head 8 of the screw 4.
  • the head 8 in double function forms the handle for turning the screw 4 on the one hand and the locking disk of the detent 9 on the other hand.
  • the index depressions are designed as grooves 10 and are referred to as such below.
  • the grooves 10 run in the longitudinal direction parallel to the axis of rotation of the screw 4.
  • Each groove 10 is longer than the maximum axial displacement of the screw 4 when adjusting.
  • the path difference that results from screwing the screw 4 into the holder 3 is compensated for by the groove length. Regardless of how deep the screw 4 is screwed into the holder 3, the pressure piece 11 can enter a groove 10.
  • the grooves 10 are introduced into the head 8 and thus increase the grip of the rotary knob formed by the head 8, which is advantageous.
  • the clamping device comprises a pair of clamping pliers or clamping bushing 12 which is formed on the holder 3.
  • a slot 13 is made in the holder 3, which runs parallel to the axis of rotation of the screws 4.
  • a wall of the bore is interrupted, which is introduced into the holder 3 and receives the screw 4.
  • the slot 13 has an open end that in the edge said wall opens.
  • the slot 13 has a closed end, in which the slot width is expanded in a circular shape to form a type of flexible joint.
  • a spring 14 loads the clamping bush 12 in the radial direction with respect to the screw 4.
  • the clamping bush 12 is compressed by the spring 14, the two side walls of the slot 13 approaching each other somewhat.
  • the internal thread 6 closes more tightly around the external thread 5, as a result of which the thread play is minimized.
  • the spring 14 is supported at one end on the clamping bush 12 and at the other end on a screw 15. This screw 15 is screwed into the holder 3 transversely to the screw 4.
  • the spring 14 is a helical spring which can be subjected to pressure and is seated on the shaft of the screw 15. The pretensioning of the spring 14 can be adjusted by turning the screw 15.
  • the clamping device is formed by a spring 16 which is supported at one end on the head 8 of the screw 4 and at the other end on the holder 3.
  • the spring 16 is a coil spring which can be subjected to pressure and is seated on the screw 4 which is inserted through the spring 16.
  • the spring 16 acts with respect to the screw 4 in the axial direction and strives to push the screw 4 out of the holder 3. As a result, the external thread 5 of the screw 4 is pressed against the internal thread 6 of the holder 3, as a result of which the thread play between the two is minimized.

Landscapes

  • Ink Jet (AREA)
  • Common Mechanisms (AREA)

Claims (7)

  1. Dispositif d'ajustage d'une tête d'impression (2), comprenant un support (3), une vis (4) avec un cône (7), pour lequel la vis (4) est vissée dans le support (3) et la tête d'impression (2) vient en appui sur le cône (7),
    caractérisé en ce
    qu'il existe un ressort (14, 16) pour réduire un jeu des filetages entre le support (3) et la vis (4) et qu'il existe un crantage (9) pour déterminer un pas lorsque l'on tourne la vis (4).
  2. Dispositif selon revendication 1,
    caractérisé en ce
    qu'une tête (8) de la vis (4) forme une rondelle de crantage du crantage (9).
  3. Dispositif selon revendication 1 ou 2,
    caractérisé en ce
    que le crantage (9) présente des rainures (10) parallèles à l'axe avec la vis (4).
  4. Dispositif selon l'une des revendications 1 à 3,
    caractérisé en ce
    que le ressort (16) exerce une action axiale par rapport à la vis (4).
  5. Dispositif selon revendication 4,
    caractérisé en ce,
    que le ressort (16) est enfiché sur la vis (4).
  6. Dispositif selon l'une des revendications 1 à 3,
    caractérisé en ce
    que le ressort (14) exerce une action radiale par rapport à la vis (4).
  7. Dispositif selon revendication 6,
    caractérisé en ce
    que le support 3 présente une bague de serrage (12) précontrainte par le ressort (14).
EP18156645.6A 2018-02-14 2018-02-14 Dispositif d'ajustement d'une tête d'impression Active EP3527390B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP18156645.6A EP3527390B1 (fr) 2018-02-14 2018-02-14 Dispositif d'ajustement d'une tête d'impression
CN201910112406.1A CN110154529B (zh) 2018-02-14 2019-02-13 用于校准印刷头的设备
JP2019000496U JP3221875U (ja) 2018-02-14 2019-02-14 印刷ヘッドを調整する装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18156645.6A EP3527390B1 (fr) 2018-02-14 2018-02-14 Dispositif d'ajustement d'une tête d'impression

Publications (2)

Publication Number Publication Date
EP3527390A1 EP3527390A1 (fr) 2019-08-21
EP3527390B1 true EP3527390B1 (fr) 2020-02-19

Family

ID=61223797

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18156645.6A Active EP3527390B1 (fr) 2018-02-14 2018-02-14 Dispositif d'ajustement d'une tête d'impression

Country Status (3)

Country Link
EP (1) EP3527390B1 (fr)
JP (1) JP3221875U (fr)
CN (1) CN110154529B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023107319B3 (de) 2023-03-23 2024-02-15 Heidelberger Druckmaschinen Aktiengesellschaft Vorrichtung zur Justage eines Druckkopfes
DE102024104484A1 (de) 2023-03-23 2024-09-26 Heidelberger Druckmaschinen Aktiengesellschaft Druckwerk einer Tintendruckmaschine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110293774B (zh) * 2019-07-26 2023-11-14 河南印都数码科技有限公司 一种打印机喷头调节结构
JP7435108B2 (ja) 2020-03-19 2024-02-21 京セラドキュメントソリューションズ株式会社 インクジェット記録装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5428375A (en) * 1992-05-29 1995-06-27 Simon; Robert J. Multiple print head ink jet printer
US5713674A (en) * 1994-10-06 1998-02-03 Pfu Limited Paper feed method and apparatus for a printer
US5870117A (en) * 1997-01-21 1999-02-09 Xerox Corporation Liquid ink printer including a camming printhead to enable increased resolution printing
JPH10235965A (ja) * 1997-02-28 1998-09-08 Tec Corp インクジェットプリンタ
US6554398B2 (en) * 2001-03-08 2003-04-29 Agfa-Gevaert Ink-jet printer equipped for aligning the printheads
US7270387B2 (en) * 2004-01-30 2007-09-18 Konica Minolta Holdings Inc. Recording head position adjusting structure and inkjet printer provided with said adjusting structure
KR100863244B1 (ko) * 2004-10-07 2008-10-15 삼성전자주식회사 잉크젯 헤드 마운트 및 이를 구비하는 잉크젯 프린트 장치.
CN101456302B (zh) * 2007-12-10 2011-06-22 旭丽电子(广州)有限公司 打印头微调机构
ES2370632B1 (es) * 2010-02-09 2012-11-06 Tkt Brainpower S.L. Sistema de ajuste de la base del cabezal de impresión de una máquina trazadora.
DE102010060412B4 (de) * 2010-11-08 2017-10-26 Océ Printing Systems GmbH & Co. KG Vorrichtung zur mechanischen Einstellung eines Druckkopfes bei einem Tintendruckgerät
GB2528843B (en) * 2014-07-30 2020-06-03 Inca Digital Printers Ltd Printhead attachment system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023107319B3 (de) 2023-03-23 2024-02-15 Heidelberger Druckmaschinen Aktiengesellschaft Vorrichtung zur Justage eines Druckkopfes
DE102024104484A1 (de) 2023-03-23 2024-09-26 Heidelberger Druckmaschinen Aktiengesellschaft Druckwerk einer Tintendruckmaschine

Also Published As

Publication number Publication date
JP3221875U (ja) 2019-06-27
CN110154529B (zh) 2020-11-03
CN110154529A (zh) 2019-08-23
EP3527390A1 (fr) 2019-08-21

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