EP0173868B1 - Bogenanleger an Druckmaschinen - Google Patents

Bogenanleger an Druckmaschinen Download PDF

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Publication number
EP0173868B1
EP0173868B1 EP85109796A EP85109796A EP0173868B1 EP 0173868 B1 EP0173868 B1 EP 0173868B1 EP 85109796 A EP85109796 A EP 85109796A EP 85109796 A EP85109796 A EP 85109796A EP 0173868 B1 EP0173868 B1 EP 0173868B1
Authority
EP
European Patent Office
Prior art keywords
stack
sheet
separating
height
signals
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
Application number
EP85109796A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0173868A1 (de
Inventor
Bertold Dr. Grützmacher
Karl-Heinz Krestyn
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
Publication of EP0173868A1 publication Critical patent/EP0173868A1/de
Application granted granted Critical
Publication of EP0173868B1 publication Critical patent/EP0173868B1/de
Expired legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/08—Separating articles from piles using pneumatic force
    • B65H3/0808—Suction grippers
    • B65H3/0891—Generating or controlling the depression
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/18—Modifying or stopping actuation of separators

Definitions

  • the invention relates to a sheet feeder on printing machines according to the preamble of claim 1.
  • a known sheet feeder with a device for lifting the stacking table uses the presser foot resting on the stacking surface to control the stacking means. If individual sheets are removed from the surface of the sheet stack and continued, the presser foot or the stacking button triggers a displaceable control pin, which is attached to the tip of the sensor and to which an electrical switch is assigned, via a nose and movable sensor tip. This in turn actuates the lifting means in such a way that the surface of the stack reaches the effective area of the separating means and the suction cups.
  • the disadvantage of the known design is that the presser foot or the stacking button comes to rest on the outer edge of the sheet stack and, because of the often low flatness of the sheet, detects any height dimension that e.g. does not have to match the height in the area of the separating suction cups.
  • the known design can lead to malfunctions in the system, e.g. caused by a sheet stack not lying flat. The known design is therefore not able to ensure safe and precise suction of the separating and conveying means in every working position.
  • the object of the invention is to improve a sheet feeder with a controlled lifting drive of the sheet stack in such a way that the cutting and conveying means are guaranteed to work safely at all machine speeds and with each sheet material to be processed.
  • the object is achieved with the inventive features of claim 1.
  • the main advantage of the solution listed can be seen in the fact that the stacking stroke drive and thus the respective position of the uppermost sheet is controlled by the position of the separating and conveying means themselves, so that the sheet surface is held in an optimal position in the area of the separating and conveying means can. Even in the case of a wavy or uneven stack surface, it is thus ensured that the separating and conveying means find a working height of the respective area of the sheet to be applied, which ensure safe and exact working of the same even at high speed.
  • the subclaims characterize advantageous embodiments of the invention and relate firstly to a special time control, secondly to a control according to the respective angle changes when the sheet stack is decreasing and to a pressure-speed-dependent control of the intake time taking into account the delays in the intake of the sheet.
  • Figure 1 shows a printing unit 1, which receives the individual sheets via a stacking table 2.
  • the paper stack 4 is provided in the sheet feeder 3 and can be raised by means of a lifting drive 5.
  • the top sheet in each case is raised in the working position of the separating suction device 6 and fed to the feed table 2 via a suction device 7.
  • the lifting drive 5 lifts the sheet stack 4 via chains 8 and support arms 9 which are fastened to the chain 8.
  • the lifting drive 5 is controlled in such a way that it lifts the sheet stack to such an extent that the uppermost sheet is in the working position for the separating and conveying means.
  • a pressure sensor 11 is provided on the suction line 10 of the separating suction device 6 (FIG. 2), which detects pressure fluctuations in the suction line 10. These occur when the squeegee moving towards the stack to pick up the sheet touches the top sheet. This creates an abrupt drop in pressure in the suction line, which occurs later relative to the machine rotation, the longer the distance that the vacuum cleaner has to travel to touch the uppermost sheet, i.e. that the relative time of the pressure drop is a measure of the respective stack height. It can be assumed here that the suction line 10 is connected to a vacuum source 12, which keeps the vacuum generated by a pump constant at a certain level.
  • a rotary pulse or angle pulse generator is assigned to the drive 13 of the separating or conveying suction device 6, 7, which is driven synchronously with the machine rotation. Both the pulse of the pressure sensor 11 and the pulses 16 of the rotary or angle pulse generators are fed to a time or angle measurement 14, which feeds the signal 17 corresponding to the respective stack height to a comparison circuit 15, which controls this signal with a synchronous to the printing press Signal 18 of a rotary pulse encoder or angular step encoder, not shown, is compared.
  • the angular step encoder can be a coding disk with several segments, as is generally known.
  • a signal 18 for the optimum stack height can be entered via the rotary pulse generator or angle step generator, so that the deviation of the two signals 17, 18 of the rotary pulse generator or the angle step generator from the optimal signal 18 is measured and the difference 19 of a control device for the linear drive 5 is fed, which turns on the drive for the linear actuator for a corresponding period of time and thus raises the stack by the necessary amount.
  • the signal which is generated at When the separating suction device 6 is triggered it is continuously delayed in relation to the signal for the optimum stack height, so that a steady or, if desired, pulse-shaped sequence of control signals is fed to the stack lifting drive and in this case causes the stack to be lifted, so that the uppermost sheet to be lifted is in the area the separating suction 6 is always in an optimally favorable working position.
  • FIG. 2 shows a control diagram in which the signal flow and the switching means provided are shown, the generally known control means used being omitted for the sake of clarity.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Controlling Sheets Or Webs (AREA)
EP85109796A 1984-09-01 1985-08-05 Bogenanleger an Druckmaschinen Expired EP0173868B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3432198A DE3432198C2 (de) 1984-09-01 1984-09-01 Verfahren zum Steuern des Hubantriebs am Bogenanleger von Druckmaschinen und Bogenanleger zur Durchführung des Verfahrens
DE3432198 1984-09-01

Publications (2)

Publication Number Publication Date
EP0173868A1 EP0173868A1 (de) 1986-03-12
EP0173868B1 true EP0173868B1 (de) 1987-10-28

Family

ID=6244438

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85109796A Expired EP0173868B1 (de) 1984-09-01 1985-08-05 Bogenanleger an Druckmaschinen

Country Status (4)

Country Link
US (1) US4624454A (enrdf_load_stackoverflow)
EP (1) EP0173868B1 (enrdf_load_stackoverflow)
JP (2) JPS6164631A (enrdf_load_stackoverflow)
DE (1) DE3432198C2 (enrdf_load_stackoverflow)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3631456C3 (de) * 1986-09-16 1995-07-13 Heidelberger Druckmasch Ag Einrichtung zum Steuern einer Stapelhebevorrichtung
JPS63114653A (ja) * 1986-11-01 1988-05-19 Sakurai Seisakusho:Kk オフセツト印刷機
US4730823A (en) * 1986-11-28 1988-03-15 International Business Machines Corporation Adaptive document feed pick mechanism
DE3706810C1 (de) * 1987-03-03 1988-03-31 Nixdorf Computer Ag Regelung einer Abzugseinrichtung fuer Blattmaterial
DE3923884C2 (de) * 1989-07-19 1994-08-04 Heidelberger Druckmasch Ag Vorrichtung zur Abtastung der Höhe von Karton- oder Papierstapeln am Ausleger oder Anleger einer Druckmaschine
JP2802807B2 (ja) * 1990-03-26 1998-09-24 キヤノン株式会社 フィルム残量検知機構
DE4135752C1 (enrdf_load_stackoverflow) * 1991-10-30 1992-11-12 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
DE4331610A1 (de) * 1993-09-17 1995-03-23 Roland Man Druckmasch Bogenanlegereinheit
JP2000185829A (ja) * 1998-12-23 2000-07-04 Xerox Corp 給紙装置
US6505832B2 (en) * 1998-12-23 2003-01-14 Xerox Corporation Variable acceleration take-away roll (TAR) for high capacity feeder
US6186492B1 (en) * 1998-12-23 2001-02-13 Xerox Corporation Adjusting air system pressures stack height and lead edge gap in high capacity feeder
JP2000191151A (ja) * 1998-12-23 2000-07-11 Xerox Corp シ―トの角度および高さを制御する方法
DE10316364A1 (de) * 2003-04-10 2004-11-04 Koenig & Bauer Ag Bogenanleger zum Vereinzeln von Bogen
SE530098C2 (sv) * 2006-07-19 2008-03-04 Xerex Ab Sätt och anordning varmed alstras och tilll ett ark i en arkmatad tryckpress fördelas ett från atmosfärtryck skilt lufttryck för att verkställa eller påverka arkets transport i tryckpressen
CN109878210B (zh) * 2019-04-30 2020-10-16 漯河市慧光印刷科技有限公司 一种印刷机刮刀和回墨刀调节装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL298992A (enrdf_load_stackoverflow) * 1962-10-11
DE1181717B (de) * 1962-11-14 1964-11-19 Mabeg Maschb Ges Mit Beschraen Steuerung an Vorrichtung zum Heben eines Stapeltisches
DE1230042B (de) * 1965-06-29 1966-12-08 Siemens Ag Stapelhubvorrichtung
CS152475B2 (enrdf_load_stackoverflow) * 1969-07-26 1973-12-19
DE2318443A1 (de) * 1972-05-05 1973-11-22 Polygraph Leipzig Verfahren und einrichtungen zur vereinzelung und kontrolle von bogen
US3922114A (en) * 1974-07-19 1975-11-25 Dunham Bush Inc Hermetic rotary helical screw compressor with improved oil management
JPS58127037U (ja) * 1982-02-23 1983-08-29 株式会社大阪クリップ 層積み部品供給装置
US4480826A (en) * 1982-03-11 1984-11-06 Hamada Printing Press Mfg. Co., Ltd. Paper feeder
JPS58140924U (ja) * 1982-03-16 1983-09-22 三和エンジニアリング株式会社 自動供給装置
DE3405366A1 (de) * 1984-02-15 1985-08-22 MTU Motoren- und Turbinen-Union München GmbH, 8000 München Schmiermittelversorgungssystem
JPH0633811B2 (ja) * 1984-03-14 1994-05-02 ヤマハ発動機株式会社 Ｖベルト無段変速機用プ−リの潤滑装置

Also Published As

Publication number Publication date
JPS6164632A (ja) 1986-04-03
DE3432198A1 (de) 1986-03-13
US4624454A (en) 1986-11-25
DE3432198C2 (de) 1986-08-21
EP0173868A1 (de) 1986-03-12
JPH0251824B2 (enrdf_load_stackoverflow) 1990-11-08
JPH0251825B2 (enrdf_load_stackoverflow) 1990-11-08
JPS6164631A (ja) 1986-04-03

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