EP0539773A1 - Dispositif de commande pour un agencement élévateur de piles d'une machine de traitement de feuilles, notamment pour machines à imprimer des feuilles - Google Patents
Dispositif de commande pour un agencement élévateur de piles d'une machine de traitement de feuilles, notamment pour machines à imprimer des feuilles Download PDFInfo
- Publication number
- EP0539773A1 EP0539773A1 EP92117162A EP92117162A EP0539773A1 EP 0539773 A1 EP0539773 A1 EP 0539773A1 EP 92117162 A EP92117162 A EP 92117162A EP 92117162 A EP92117162 A EP 92117162A EP 0539773 A1 EP0539773 A1 EP 0539773A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control device
- sheet
- stack
- pile
- motor
- 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
Links
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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 through 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 stack lifting drive, which ensures that the top sheet is always 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 only executes slower or faster tracking movements in accordance with the deviations of the target / actual height difference determined by a stack height scanner.
- 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 for controlling the tracking movements of the sheet stack by assigning a pulse generator to the motor of the stack lifting drive.
- the size of the tracking movements is calculated 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 therefore 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 one another on a level 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 stack lifting 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.
- the 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 a 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 frequency-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 such 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 is undershot, 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.
- FIG. 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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4135752 | 1991-10-30 | ||
DE4135752A DE4135752C1 (fr) | 1991-10-30 | 1991-10-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0539773A1 true EP0539773A1 (fr) | 1993-05-05 |
EP0539773B1 EP0539773B1 (fr) | 1994-12-21 |
Family
ID=6443734
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92117162A Expired - Lifetime EP0539773B1 (fr) | 1991-10-30 | 1992-10-08 | Dispositif de commande pour un agencement élévateur de piles d'une machine de traitement de feuilles, notamment pour machines à imprimer des feuilles |
Country Status (4)
Country | Link |
---|---|
US (1) | US5295678A (fr) |
EP (1) | EP0539773B1 (fr) |
JP (1) | JPH0741996B2 (fr) |
DE (2) | DE4135752C1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0673865A2 (fr) * | 1994-03-25 | 1995-09-27 | MAN Roland Druckmaschinen AG | Dispositif de levage d'une pile |
EP1342682A2 (fr) * | 2002-03-06 | 2003-09-10 | MAN Roland Druckmaschinen AG | Entraînement de levage de piles |
Families Citing this family (18)
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 |
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 (fr) * | 1999-04-17 | 2001-12-19 | Koenig & Bauer Aktiengesellschaft | Dispositif pour contrôler un dispositif de levage de piles travaillant en continu |
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 |
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 |
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 |
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 |
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 |
US10745231B2 (en) * | 2015-11-30 | 2020-08-18 | Hewlett-Packard Development Company, L.P. | Media stackers |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2659511A1 (de) * | 1976-03-15 | 1977-09-22 | Polygraph Leipzig | Diskontinuierliche stapelsteuereinrichtung |
DE3607979A1 (de) * | 1985-04-02 | 1986-10-09 | VEB Kombinat Polygraph "Werner Lamberz" Leipzig, DDR 7050 Leipzig | Steuereinrichtung an papieran- und -auslagen polygraphischer maschinen |
DE3631456A1 (de) * | 1986-09-16 | 1988-03-24 | Heidelberger Druckmasch Ag | Einrichtung zum steuern einer stapelhebevorrichtung |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3125337A (en) * | 1964-03-17 | Stack height control apparatus for a sheet feeder | ||
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 |
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 |
-
1991
- 1991-10-30 DE DE4135752A patent/DE4135752C1/de not_active Expired - Lifetime
-
1992
- 1992-10-08 EP EP92117162A patent/EP0539773B1/fr not_active Expired - Lifetime
- 1992-10-08 DE DE59201024T patent/DE59201024D1/de not_active Expired - Fee Related
- 1992-10-29 US US07/968,450 patent/US5295678A/en not_active Expired - Lifetime
- 1992-10-29 JP JP4291051A patent/JPH0741996B2/ja not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2659511A1 (de) * | 1976-03-15 | 1977-09-22 | Polygraph Leipzig | Diskontinuierliche stapelsteuereinrichtung |
DE3607979A1 (de) * | 1985-04-02 | 1986-10-09 | VEB Kombinat Polygraph "Werner Lamberz" Leipzig, DDR 7050 Leipzig | Steuereinrichtung an papieran- und -auslagen polygraphischer maschinen |
DE3631456A1 (de) * | 1986-09-16 | 1988-03-24 | Heidelberger Druckmasch Ag | Einrichtung zum steuern einer stapelhebevorrichtung |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0673865A2 (fr) * | 1994-03-25 | 1995-09-27 | MAN Roland Druckmaschinen AG | Dispositif de levage d'une pile |
EP0673865A3 (fr) * | 1994-03-25 | 1996-03-20 | Roland Man Druckmasch | Dispositif de levage d'une pile. |
EP1342682A2 (fr) * | 2002-03-06 | 2003-09-10 | MAN Roland Druckmaschinen AG | Entraînement de levage de piles |
EP1342682A3 (fr) * | 2002-03-06 | 2004-11-10 | MAN Roland Druckmaschinen AG | Entraínement de levage de piles |
Also Published As
Publication number | Publication date |
---|---|
JPH0741996B2 (ja) | 1995-05-10 |
JPH05278872A (ja) | 1993-10-26 |
US5295678A (en) | 1994-03-22 |
DE59201024D1 (de) | 1995-02-02 |
DE4135752C1 (fr) | 1992-11-12 |
EP0539773B1 (fr) | 1994-12-21 |
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