EP0539773B1 - Steuervorrichtung für einen Stapelhubantrieb bei bogenverarbeitenden Maschinen, insbesondere Bogendruckmaschinen - Google Patents

Steuervorrichtung für einen Stapelhubantrieb bei bogenverarbeitenden Maschinen, insbesondere Bogendruckmaschinen Download PDF

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Publication number
EP0539773B1
EP0539773B1 EP92117162A EP92117162A EP0539773B1 EP 0539773 B1 EP0539773 B1 EP 0539773B1 EP 92117162 A EP92117162 A EP 92117162A EP 92117162 A EP92117162 A EP 92117162A EP 0539773 B1 EP0539773 B1 EP 0539773B1
Authority
EP
European Patent Office
Prior art keywords
control device
sheet
stack
motor
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.)
Expired - Lifetime
Application number
EP92117162A
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German (de)
English (en)
French (fr)
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EP0539773A1 (de
Inventor
Bernd Lindner
Albrecht Völz
Joachim Blumör
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.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
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Publication date
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Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0539773A1 publication Critical patent/EP0539773A1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H1/00—Supports or magazines for piles from which articles are to be separated
    • B65H1/08—Supports or magazines for piles from which articles are to be separated with means for advancing the articles to present the articles to the separating device
    • B65H1/18—Supports or magazines for piles from which articles are to be separated with means for advancing the articles to present the articles to the separating device controlled by height of pile

Definitions

  • the invention relates to a control device for a stacking stroke drive in sheet-processing machines, in particular sheet-fed printing machines, according to the preamble of claim 1.
  • the sheets to be printed are removed from the top of a stack and, in particular, conveyed under shingled via a feed table.
  • the devices effecting the sheet removal can only securely grasp the sheets within a relatively narrow height range of the top edge of the stack in order to ensure trouble-free transport of the sheets.
  • the pallet on which the sheets are stacked is therefore provided with a stacking stroke drive, which causes the top sheet to always be within a certain height range.
  • the uppermost sheet or the top edge of the stack is detected by means of a stack height scanner.
  • the stack lifting drive for lifting the pallet is controlled by a control device.
  • the stack lifting drive can carry out continuous or discontinuous movements of the pallet during the subsequent conveying.
  • a control device for a continuously operating stack lifting drive in which the motor of the stack lifting drive always remains activated according to the deviations of the target / actual height difference determined by a stack height scanner, only executes slower or faster tracking movements.
  • the disadvantage here is that the motor and the drive upstream of it must be designed for a very large adjustment range, so that the top edge of the stack can be kept within a narrow height range at all processing speeds of the printing press and all substrate thicknesses.
  • the device for controlling a stack lifting device expands the possibilities with regard to the control of the tracking movements of the sheet stack in that a pulse generator is assigned to the motor of the stack lifting drive.
  • the size of the tracking movements is calculated in the control device from the signals of the pulse generator.
  • the control device also detects the processing speed of the printing press.
  • the described pulse generator is very complex due to the provided pulse generator.
  • the object of the present invention is thus to design a control device for a stacking stroke drive in sheet-processing machines in accordance with the preamble of claim 1 such that an expensive motor and drive for large adjustment ranges can be dispensed with.
  • a switch is made between a continuous and a discontinuous stacking stroke operation depending on the processing speed of the printing press and the substrate thickness. Switching between the two operating modes results in a control device in which a characteristic curve, which is worked out according to the setting range of the motor and the drive, is stored.
  • the characteristic curve separates the areas with continuous and discontinuous stacking stroke operation from each other in a plane formed by the axes processing speed of the printing press and the substrate thickness.
  • the invention thus makes it possible to dispense with a high-quality and expensive motor and drive (large adjustment range). Nevertheless, the advantages of continuous stacking can be used at high processing speeds and large substrate thicknesses.
  • the sheets to be printed on a printing press 11 lie in the form of a stack 1 on a pallet 2 (FIG. 1).
  • a lifting gear 3 is indicated, through which the pallet 2 and thus the stack 1 can be lifted.
  • the lifting gear 3 is driven by a motor 4, which is additionally associated with an electromagnetically controllable brake 5.
  • the task of brake 5 is to keep the stack 1 against its weight at a certain height when the motor 4 is not activated.
  • Brake 5 can also be integrated directly in the motor 4 in the form of a lifting armature motor and can be switched either by pulses from the control device 8 or inevitably by the motor current.
  • Motor 4 is supplied with voltage by a speed controller 6 in order to achieve a predeterminable speed.
  • motor 4 is designed as a three-phase asynchronous motor, with a speed controller 6 having a small adjustment range being assigned to it.
  • Speed controller 6 takes the voltage on the input side directly from the mains.
  • the upper edge of stack 1 is detected by a stack height scanner 7, the output signal of which can be seen whether the upper edge of stack 1 is within or outside a certain height range.
  • the output of the stack height scanner 7 is connected to the control device 8, in which the corresponding control signals for the speed controller 6 are formed.
  • the control device 8 is supplied with the processing speed of the printing press 11 shown symbolically here.
  • the processing speed can be a tachometer signal from the main drive or a pulse sequence of speed-dependent frequency.
  • the substrate thickness can also be supplied to the control device 8, which, as indicated in FIG. 1, can be done via manual data input, in particular via a control center computer 9, from which the entire printing press 11 can be monitored and operated.
  • the control device 8 is now designed to switch the speed controller 6 between continuous and discontinuous operation depending on the processing speed of the printing press 11 and the printing material thickness entered via the control center computer 9.
  • the control device 8 specifies a speed setpoint to the speed controller 6 in such a way that the upper edge of stack 1 is always within a height range controlled by the stack height scanner 7.
  • the speed setpoint is calculated from the processing speed of the printing press 11 and the substrate thickness, the translation of the lifting gear 3 being taken into account.
  • the output signals from the stack height scanner 7 are monitored in the control device 8 for compliance with a target height of the top edge of the stack. If the setpoint height is exceeded and undershot, the calculated setpoint speed values are passed on to the speed controller 6 with additional corrections by the control device 8.
  • control device 8 In the case of discontinuous operation, control device 8 only monitors whether the upper edge of stack 1 is exceeded or undershot, which is determined by stack height scanner 7. If the height falls below, the control device 8 causes the stack 1 to be raised via the speed controller 6 until, for example, an upper limit is reached. After a certain time, i.e. after a certain number of sheets removed, control device 8 again causes stack 1 to be lifted.
  • the control device 8 switches over between continuous and discontinuous stacking stroke operation on the basis of a comparison of the current processing speed of the printing press 11 and the previously entered printing material thickness.
  • the control device 8 is operatively connected to a characteristic curve memory 10 in that a characteristic curve is stored.
  • 2 shows a quantitative example of the stored characteristic curve which lies in a plane formed by the axis of the processing speed V of the machine with the printing material thickness B.
  • D denotes the area of discontinuous and K the area of continuous stacking operation.
  • the characteristic curve memory 10 thus contains the processing speed V for a large number of printing material strengths B, at which it is necessary to switch between continuous and discontinuous operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Pile Receivers (AREA)
  • Handling Of Cut Paper (AREA)
  • Controlling Sheets Or Webs (AREA)
EP92117162A 1991-10-30 1992-10-08 Steuervorrichtung für einen Stapelhubantrieb bei bogenverarbeitenden Maschinen, insbesondere Bogendruckmaschinen Expired - Lifetime EP0539773B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4135752 1991-10-30
DE4135752A DE4135752C1 (enrdf_load_stackoverflow) 1991-10-30 1991-10-30

Publications (2)

Publication Number Publication Date
EP0539773A1 EP0539773A1 (de) 1993-05-05
EP0539773B1 true EP0539773B1 (de) 1994-12-21

Family

ID=6443734

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92117162A Expired - Lifetime EP0539773B1 (de) 1991-10-30 1992-10-08 Steuervorrichtung für einen Stapelhubantrieb bei bogenverarbeitenden Maschinen, insbesondere Bogendruckmaschinen

Country Status (4)

Country Link
US (1) US5295678A (enrdf_load_stackoverflow)
EP (1) EP0539773B1 (enrdf_load_stackoverflow)
JP (1) JPH0741996B2 (enrdf_load_stackoverflow)
DE (2) DE4135752C1 (enrdf_load_stackoverflow)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4228664C2 (de) * 1992-08-28 1994-07-28 Heidelberger Druckmasch Ag Verfahren zur Steuerung des Antriebs für einen Stapeltisch einer Stapelhubeinrichtung an einer Bogendruckmaschine
JP3276441B2 (ja) * 1993-03-05 2002-04-22 理想科学工業株式会社 給紙台装置の昇降制御装置
DE4410384C1 (de) * 1994-03-25 1995-05-24 Roland Man Druckmasch Steuerung für eine Stapelhubvorrichtung
DE19543634A1 (de) * 1995-11-23 1997-05-28 Giesecke & Devrient Gmbh Vorrichtung und Verfahren zum Vereinzeln von Blattgut aus einem Stapel
US5988629A (en) * 1996-09-30 1999-11-23 Eastman Kodak Company Control for a sheet stack supporting platform
US6095512A (en) 1998-03-25 2000-08-01 Vijuk Equipment, Inc. Accumulator station with stack height control
EP1059251B1 (de) * 1999-04-17 2001-12-19 Koenig & Bauer Aktiengesellschaft Einrichtung zum Steuern einer kontinuierlich arbeitenden Stapelhebevorrichtung
CH693850A5 (fr) * 2000-05-16 2004-03-15 Bobst Sa Dispositif d'asservissement des organes délivrant des feuilles à une machine.
US6698747B2 (en) * 2001-02-06 2004-03-02 Heidelberger Druckmaschinen Ag Method and system for providing sheet stack level control
US7048273B2 (en) * 2002-02-28 2006-05-23 Bowe Bell + Howell Company System and method for monitoring grouped resources
DE20203617U1 (de) * 2002-03-06 2002-05-16 MAN Roland Druckmaschinen AG, 63075 Offenbach Stapelhubantrieb
JP2004175532A (ja) * 2002-11-28 2004-06-24 Ryobi Ltd 給紙装置
US20070063423A1 (en) * 2005-09-16 2007-03-22 Kirby Alfred D Media bed
JP4253852B2 (ja) * 2007-03-15 2009-04-15 村田機械株式会社 画像読取装置及びイメージスキャナ装置
JP4297173B2 (ja) * 2007-03-15 2009-07-15 村田機械株式会社 画像読取装置及びイメージスキャナ装置
JP4324808B2 (ja) * 2007-03-15 2009-09-02 村田機械株式会社 画像読取装置及びイメージスキャナ装置
US8342512B2 (en) * 2009-09-28 2013-01-01 Kabushiki Kaisha Toshiba Paper sheet pick up device
JP5943784B2 (ja) * 2012-09-07 2016-07-05 キヤノン株式会社 シート給送装置及び画像形成装置
JP2015131699A (ja) * 2014-01-10 2015-07-23 キヤノン株式会社 シート給送装置及び画像形成装置
KR20180053380A (ko) * 2015-11-30 2018-05-21 휴렛-팩커드 디벨롭먼트 컴퍼니, 엘.피. 매체 적층기

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125337A (en) * 1964-03-17 Stack height control apparatus for a sheet feeder
DD124786A1 (enrdf_load_stackoverflow) * 1976-03-15 1977-03-16
US4273323A (en) * 1977-11-24 1981-06-16 Ricoh Co., Ltd. Sheet feeding apparatus for copying machine, printing machine, etc.
US4457508A (en) * 1981-05-08 1984-07-03 Veb Kombinat Polygraph "Werner Lamberz" Leipzig Stack control apparatus for sheet feeders
DE3432198C2 (de) * 1984-09-01 1986-08-21 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Verfahren zum Steuern des Hubantriebs am Bogenanleger von Druckmaschinen und Bogenanleger zur Durchführung des Verfahrens
DD235858A1 (de) * 1985-04-02 1986-05-21 Polygraph Leipzig Steuereinrichtung an papieran- und -auslagen polygraphischer maschinen
DE3631456C3 (de) * 1986-09-16 1995-07-13 Heidelberger Druckmasch Ag Einrichtung zum Steuern einer Stapelhebevorrichtung
JPS6397525A (ja) * 1986-10-14 1988-04-28 Ricoh Co Ltd 給紙トレイの駆動装置
JPH01294125A (ja) * 1988-05-20 1989-11-28 Hitachi Koki Co Ltd カット紙供給テーブル制御方法
JPH0295627A (ja) * 1988-09-30 1990-04-06 Omron Tateisi Electron Co 紙葉類の繰出・集積装置

Also Published As

Publication number Publication date
EP0539773A1 (de) 1993-05-05
JPH05278872A (ja) 1993-10-26
JPH0741996B2 (ja) 1995-05-10
DE59201024D1 (de) 1995-02-02
US5295678A (en) 1994-03-22
DE4135752C1 (enrdf_load_stackoverflow) 1992-11-12

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