EP0786341A2 - Dispositif pour l'ajustement de la pression d'impression dans une machine à imprimer - Google Patents

Dispositif pour l'ajustement de la pression d'impression dans une machine à imprimer Download PDF

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Publication number
EP0786341A2
EP0786341A2 EP96250290A EP96250290A EP0786341A2 EP 0786341 A2 EP0786341 A2 EP 0786341A2 EP 96250290 A EP96250290 A EP 96250290A EP 96250290 A EP96250290 A EP 96250290A EP 0786341 A2 EP0786341 A2 EP 0786341A2
Authority
EP
European Patent Office
Prior art keywords
contact pressure
pressure adjusting
torque
wiping roller
torque sensor
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.)
Withdrawn
Application number
EP96250290A
Other languages
German (de)
English (en)
Other versions
EP0786341A3 (fr
Inventor
Hideaki c/o Komori Corp. Sekiyado Plant Toyoda
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.)
Komori Corp
Original Assignee
Komori Corp
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 Komori Corp filed Critical Komori Corp
Publication of EP0786341A2 publication Critical patent/EP0786341A2/fr
Publication of EP0786341A3 publication Critical patent/EP0786341A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0072—Devices for measuring the pressure between cylinders or bearer rings

Definitions

  • This invention relates to a contact pressure adjusting device of a printing press.
  • An intaglio printing press for example, has an intaglio cylinder, as a rotating part, which has an intaglio mounted on the peripheral surface thereof, and an impression cylinder contiguous to the intaglio cylinder.
  • a paper is fed by a feeder, conveyed to a swing arm shaft pregripper, and then gripped by a gripper of the impression cylinder.
  • the paper is printed with ink supplied to the plate surface of the intaglio to have images transferred thereto.
  • a printed paper is delivered by a discharge chain for discharge.
  • This type of intaglio printing press is equipped with a wiping device.
  • This wiping device comprises a wiping roller, as a rotating part, contiguous to the intaglio cylinder, and rotating such that the contiguous peripheral surfaces of the wiping roller and the intaglio cylinder move in opposite directions to each other; a plurality of brushes each having a pad surface contiguous to the peripheral surface of the wiping roller; and a doctor blade of steel or the like located downstream from the brushes in the direction of roller rotation and having a forward end in contact with the wiping roller.
  • Part of ink supplied from ink form rollers of an inking device to an intaglio surface, migrates and adheres to the surroundings of the ink-retaining cups as patterns.
  • This surplus part of ink is wiped off with the wiping roller rotating in contact with the plate surface, and only the patterns of the cups are transferred to a paper.
  • the wiping roller is rotating while being dipped in a solvent, such as trichloroethylene, contained in a solvent tank.
  • a solvent such as trichloroethylene
  • the wiping roller also varies in the roller diameter because of wear or thermal expansion. Every time its roller diameter changes, the contact pressure must be readjusted. This has been tiresome and difficult.
  • the wiping roller thermally expands owing to friction against the plate surface.
  • the contact pressure increases, causing variations in printing quality.
  • This wiping device includes a hydraulic cylinder having a piston rod tip pivotably mounted on the outer periphery side of the eccentric bearing; a threaded shaft being connected concentrically to the head side of the hydraulic cylinder so as to transmit a movement along the axial direction, but not to transmit a rotation, and being screwed to a threaded bearing set in place; and a contact pressure adjustment motor for rotating the threaded shaft.
  • This wiping device is designed such that the hydraulic cylinder is operated to throw the wiping roller on and off the intaglio cylinder, and the contact pressure adjustment motor is actuated during the throw-on to adjust the contact pressure of the wiping roller on the intaglio cylinder.
  • the above-described conventional wiping device performs the adjustment in the following manner: An operator sees printing products, or may look at a warning light or hear an alarm as a sign which tells that the electric current of a motor, a drive source for the wiping roller, has become too high. Only then, the operator gives a command to a contact pressure adjustment input device to drivingly control the contact pressure adjusting motor.
  • the present invention constructs a printing press having contact pressure adjusting means for adjusting the pressure of contact between cylinders contiguous to each other, wherein a torque sensor is provided for detecting the torque of a transmission shaft in a drive system of any of the cylinders, and the contact pressure is managed based on the detected value of the torque sensor.
  • the torque of the transmission shaft increases or decreases accordingly.
  • This change in the torque is detected by the torque sensor, and the contact pressure is managed based on the detected value of the torque sensor.
  • the contact pressure adjusting means comprises an eccentric bearing for supporting the shaft end of a wiping roller, and a drive device for rotating the eccentric bearing relative to a frame to vary the core-to-core distance between the wiping roller and an intaglio cylinder.
  • This makeup enables the pressure of contact between the wiping roller and the intaglio cylinder to be adjusted without requiring a considerable change in the structure of the conventional wiping device.
  • the drive device has a contact pressure adjusting motor, and the contact pressure adjusting motor is feedback controlled by a control device so that the detected value of the torque sensor will become the torque under appropriate contact pressure.
  • the contact pressure adjusting motor is feedback controlled by a control device so that the detected value of the torque sensor will become the torque under appropriate contact pressure.
  • a wiping roller 1 is journaled in an inner hole of an eccentric bearing 2.
  • the wiping roller 1 makes throw-on and throw-off motions relative to an intaglio cylinder 4.
  • a piston rod tip of a hydraulic cylinder 5 is pivotably joined to the fitment 3 by means of a pin 6.
  • a threaded shaft 8 is connected via a thrust bearing 7.
  • the thrust bearing 7 transmits a movement of the threaded shaft 8 along the axial direction to the hydraulic cylinder 5, but does not transmit the rotation of the threaded shaft 8 to the hydraulic cylinder 5.
  • the threaded shaft 8 is screwed to a threaded bearing 10 locked to a solvent tank 9.
  • a contact pressure adjusting motor 12 is locked to a coupling 11 housing the thrust bearing 7.
  • a gear 13 locked to a motor shaft 17 of the contact pressure adjusting motor 12 meshes with a gear 14 locked to the threaded shaft 8.
  • the hydraulic cylinder 5 is equipped with a detection member 15, and a direct acting potentiometer 16 is provided to detect the position of this detection member 15.
  • FIG. 2 shows the left side (the operator's side) of the wiping roller 1.
  • An apparatus of the same construction as described above is assembled to the right side (the drive side) of the wiping roller 1.
  • the contact pressure adjusting motor 12 rotates at a drive command from a control device 20.
  • a control device 20 normal rotation of the contact pressure adjusting motor 12 increases the contact pressure, whereas its reverse rotation decreases the contact pressure.
  • the control device 20 receives detection signals from a torque sensor 21 provided in a drive system for the wiping roller 1.
  • This torque sensor 21 is a high durability sensor which can detect the torque of a rotating shaft in a magnetic, non-contact manner by utilizing magnetostriction.
  • the torque sensor 21 is connected to a speed reducer 24 on the side of a drive motor 23, and a gear shaft 25 on the side of the wiping roller 1 via couplings 22a and 22b, respectively.
  • the numeral 26 denotes a drive-side frame through which the gear shaft 25 is passed and supported rotatably via a bearing 27.
  • control device 20 constantly compares a set torque value, which has been determined previously, with a detected torque value from the torque sensor 21, and performs feedback control of the contact pressure adjusting motor 12 so that the detected torque value will coincide with the set torque value.
  • the contact pressure adjusting motor 12 is rotated during contact between the wiping roller 1 and the intaglio cylinder 4 to make an initial adjustment of the contact pressure of the wiping roller 1 on the intaglio cylinder 4. Then, printing is started, whereupon the wiping roller 1 undergoes rotational resistance because of friction against the plate surface. As a result, the gear shaft 25 is subject to torque, and is twisted. This torque at the initial stage of printing is detected by the torque sensor 21, serving as the set torque value.
  • the aforementioned appropriate contact pressure increases owing to the thermal expansion of the wiping roller 1 (the roller surface comprising vinyl chloride resin thermally expands under friction with the intaglio cylinder 4), or decreases because of its wear.
  • the torque of the gear shaft 25 increases or decreases.
  • the control device 20 Based on the detected torque value from the torque sensor 21, the control device 20 carries out feedback control of the contact pressure adjusting motor 12 so that the detected torque value will become the set torque value at the appropriate contact pressure. That is, when the detected torque value increases with increasing contact pressure, the contact pressure adjusting motor 12 is reversely rotated so as to bring the detected torque value into agreement with the set torque value at the appropriate contact pressure. Whereas when the detected torque value decreases with decreasing contact pressure, the contact pressure adjusting motor 12 is normally rotated so that the detected torque value will agree with the set torque value at the appropriate contact pressure.
  • the contact pressure adjusting motor 12 is used for automatic adjustment of the contact pressure.
  • the detected torque value from the torque sensor 21 may be displayed on an indicator. An operator reading this value may adjust the contact pressure using a manually operated handle or the like.
  • the instant embodiment furthermore, discloses an example of adjusting the contact pressure between the intaglio cylinder and the wiping roller as rotating parts contiguous to each other in an intaglio printing press.
  • the claimed contact pressure adjusting device may be provided for a cylinder such as an impression cylinder, a blanket cylinder or a plate cylinder, or a roller of an inking device or a dampener in an offset printing press, or may be applied to any rotating parts which require contact pressure adjustment.
  • the present invention provides a printing press having contact pressure adjusting means for adjusting the pressure of contact between cylinders contiguous to each other, wherein a torque sensor is provided for detecting the torque of a transmission shaft in a drive system for any of the cylinders, and the contact pressure is managed based on the detected value of the torque sensor.
  • a torque sensor is provided for detecting the torque of a transmission shaft in a drive system for any of the cylinders, and the contact pressure is managed based on the detected value of the torque sensor.
  • the contact pressure adjusting means comprises an eccentric bearing for supporting the shaft end of a wiping roller, and a drive device for rotating the eccentric bearing relative to a frame to vary the core-to-core distance between the wiping roller and an intaglio cylinder.
  • the pressure of contact between the wiping roller and the intaglio cylinder can be adjusted without requiring a considerable change in the structure of the conventional wiping device. This is cost-effective.
  • the drive device has a contact pressure adjusting motor, and the contact pressure adjusting motor is feedback controlled by a control device so that the detected value of the torque sensor will become the torque under appropriate contact pressure.

Landscapes

  • Rotary Presses (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP96250290A 1996-01-24 1996-12-12 Dispositif pour l'ajustement de la pression d'impression dans une machine à imprimer Withdrawn EP0786341A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8009717A JPH09193337A (ja) 1996-01-24 1996-01-24 印刷機の接触圧調整装置
JP9717/96 1996-01-24

Publications (2)

Publication Number Publication Date
EP0786341A2 true EP0786341A2 (fr) 1997-07-30
EP0786341A3 EP0786341A3 (fr) 1998-01-07

Family

ID=11728039

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96250290A Withdrawn EP0786341A3 (fr) 1996-01-24 1996-12-12 Dispositif pour l'ajustement de la pression d'impression dans une machine à imprimer

Country Status (2)

Country Link
EP (1) EP0786341A3 (fr)
JP (1) JPH09193337A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1018426A1 (fr) * 1999-01-07 2000-07-12 Fischer & Krecke Gmbh & Co. Procedé pour regler la pression entre deux cylindres d'une machine d'impression
WO2004101282A1 (fr) * 2003-05-13 2004-11-25 Kba-Giori S.A. Rotative en creux pourvue d'un cylindre grave et d'un cylindre d'essuyage rotatif en contact avec le cylindre grave
US20080264283A1 (en) * 2007-04-26 2008-10-30 Elad Taig Printing Assembly
EP2021181A2 (fr) * 2006-06-01 2009-02-11 Goss International Americas, Inc. Vérification de la taille d'un blanchet à l'aide d'une rétroaction de couple d'entraînement
CN102145576A (zh) * 2010-02-08 2011-08-10 小森公司 印刷机的驱动控制方法和驱动控制装置
EP2392461A1 (fr) * 2010-06-04 2011-12-07 Komori Corporation Procédé de réglage à contact par pression et appareil de réglage à contact par pression pour pression d'impression

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100455482B1 (ko) * 2002-05-16 2004-11-06 한국기계연구원 인쇄기의 3축변위 제어장치
KR100911214B1 (ko) * 2007-10-10 2009-08-06 한국기계연구원 롤-투-롤 윤전인쇄시스템의 인압 제어장치
JP2011251504A (ja) * 2010-06-04 2011-12-15 Komori Corp 印刷機の接触圧調整方法及び接触圧調整装置
JP5498349B2 (ja) * 2010-10-29 2014-05-21 株式会社小森コーポレーション 凹版印刷機の接触圧調整方法及び接触圧調整装置
JP5629550B2 (ja) * 2010-10-29 2014-11-19 株式会社小森コーポレーション 凹版印刷機の接触圧調整方法及び接触圧調整装置
JP2011251506A (ja) * 2010-06-04 2011-12-15 Komori Corp 凹版印刷機の接触圧調整方法及び接触圧調整装置
JP2011251505A (ja) * 2010-06-04 2011-12-15 Komori Corp 印刷機の接触圧調整方法及び接触圧調整装置
KR101152775B1 (ko) * 2010-12-13 2012-06-12 한국기계연구원 전자회로 인쇄용 그라비어오프셋 윤전인쇄기의 투루롤링
EP2524809A1 (fr) * 2011-05-20 2012-11-21 KBA-NotaSys SA Ink wiping system for an intaglio printing press

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0437542A (ja) 1990-06-01 1992-02-07 Komori Corp 凹版印刷機のワイピング装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3148449C1 (de) * 1981-12-08 1983-06-01 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Verfahren zur Verringerung von Registerfehlern und Druckmaschine zur Durchfuehrung des Verfahrens
DE3825307C1 (fr) * 1988-07-26 1990-01-18 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
CH681875A5 (fr) * 1990-08-17 1993-06-15 De La Rue Giori Sa
CA2073118C (fr) * 1991-07-30 2004-09-14 Ernst Anton Blass Machine d'heliogravure

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0437542A (ja) 1990-06-01 1992-02-07 Komori Corp 凹版印刷機のワイピング装置

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1018426A1 (fr) * 1999-01-07 2000-07-12 Fischer & Krecke Gmbh & Co. Procedé pour regler la pression entre deux cylindres d'une machine d'impression
WO2004101282A1 (fr) * 2003-05-13 2004-11-25 Kba-Giori S.A. Rotative en creux pourvue d'un cylindre grave et d'un cylindre d'essuyage rotatif en contact avec le cylindre grave
EP2021181A4 (fr) * 2006-06-01 2011-11-30 Goss Int Americas Inc Vérification de la taille d'un blanchet à l'aide d'une rétroaction de couple d'entraînement
EP2021181A2 (fr) * 2006-06-01 2009-02-11 Goss International Americas, Inc. Vérification de la taille d'un blanchet à l'aide d'une rétroaction de couple d'entraînement
US20080264283A1 (en) * 2007-04-26 2008-10-30 Elad Taig Printing Assembly
US9547271B2 (en) * 2007-04-26 2017-01-17 Hewlett-Packard Development Company, L.P. Printing assembly
CN102145576A (zh) * 2010-02-08 2011-08-10 小森公司 印刷机的驱动控制方法和驱动控制装置
US20110192298A1 (en) * 2010-02-08 2011-08-11 Komori Corporation Drive control method and drive control apparatus for printing press
CN102145576B (zh) * 2010-02-08 2014-12-24 小森公司 印刷机的驱动控制方法和驱动控制装置
US9233530B2 (en) * 2010-02-08 2016-01-12 Komori Corporation Drive control method and drive control apparatus for printing press
EP2392461A1 (fr) * 2010-06-04 2011-12-07 Komori Corporation Procédé de réglage à contact par pression et appareil de réglage à contact par pression pour pression d'impression
CN102267276A (zh) * 2010-06-04 2011-12-07 小森公司 印刷机的接触压力调整方法和接触压力调整装置
CN102267276B (zh) * 2010-06-04 2015-08-19 小森公司 印刷机的接触压力调整方法和接触压力调整装置
US9132624B2 (en) 2010-06-04 2015-09-15 Komori Corporation Contact pressure adjusting method and contact pressure adjusting apparatus for printing press
CN105150668A (zh) * 2010-06-04 2015-12-16 小森公司 印刷机的接触压力调整方法和接触压力调整装置

Also Published As

Publication number Publication date
JPH09193337A (ja) 1997-07-29
EP0786341A3 (fr) 1998-01-07

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