EP0214804A2 - Drucksteuerungssystem für Druckpapierband - Google Patents

Drucksteuerungssystem für Druckpapierband Download PDF

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Publication number
EP0214804A2
EP0214804A2 EP86306565A EP86306565A EP0214804A2 EP 0214804 A2 EP0214804 A2 EP 0214804A2 EP 86306565 A EP86306565 A EP 86306565A EP 86306565 A EP86306565 A EP 86306565A EP 0214804 A2 EP0214804 A2 EP 0214804A2
Authority
EP
European Patent Office
Prior art keywords
sheet
moving
relative
cycle
continuous
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Withdrawn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
EP86306565A
Other languages
English (en)
French (fr)
Other versions
EP0214804A3 (de
Inventor
Reginald Douglas Brooker
David Roy George Wilkins
Stuart Weaver
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.)
INOTECH SYSTEMS Ltd
Original Assignee
INOTECH SYSTEMS Ltd
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 INOTECH SYSTEMS Ltd filed Critical INOTECH SYSTEMS Ltd
Publication of EP0214804A2 publication Critical patent/EP0214804A2/de
Publication of EP0214804A3 publication Critical patent/EP0214804A3/de
Withdrawn legal-status Critical Current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
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/02—Conveying or guiding webs through presses or machines
    • B41F13/04—Conveying or guiding webs through presses or machines intermittently

Definitions

  • the present invention relates to apparatus for and a method of controlling repetitive registering a continuous feed of sheet material in a: cyclic process.
  • the invention is particularly, but not exclusively concerned with the printing of continuous stationery.
  • apparatus for contolling repetitive registering of. a continous feed of a sheet material means for moving the continuous sheet relative to a rotatable processing member, means for determining the position of the sheet material relative to the member, and control means for controlling the means for moving to reposition the sheet of material at the end of each processing cycle ready for the next processing cycle.
  • a method of controlling repetitive registering of a continuous feed of sheet material in a cyclic process including the steps of moving the sheet of material to be processed relative to a rotatable processing member, measuring the position of the sheet of material relative to the processing member and controlling the position of sheet at the end of each processing cycle ready for the next processing cycle.
  • a continuous sheet of stationery is fed between an impression cylinder and a print control cylinder, which forms the rotatable processing member.
  • the means for moving the continuous sheet comprises pin feed tractor units which cooperate with perforations provided in the sheet.
  • the means for determining the position of the sheet comprises coarse and fine encoders.
  • a preset value representing the length of sheet or form to be printed per cycle is fed into a counter which is decremented by the coase encbderras the cycle progresses.
  • the fine encoder feeds the fine position into a reversible counter and that counter then accumulates the movement of the tractor units past the end form position.
  • the end form position can then be precisely returned to by reversing the tractor units a distance equal to the accumulated measurement.
  • the counter and encoders from part of a control system which also includes control logic for the control of the various functions of the system.
  • a continuous sheet fed machine typically has two cylinders driven by one synchronous motor, at a constant speed. The speed can be varied by the operator to give the desired quality of print.
  • One cylinder carries the impression that is to be printed onto the paper.
  • the other cylinder controls the print.
  • the print control cylinder allows the sheet of paper to move and to be printed. Normally on such machines the print control cylinder is manually moved to the print position. One sheet is printed every revolution of the two cylinders.
  • the impression cylinder, print control cylinder and synchronous motor of the sheet fed machine are retained. These are respectively referenced 1, 2 and 3 in the drawing..An automatic control is provided for the.. print control system and two pairs of pin feed tractor units 4 and 5 are provided downstream and upstream of the cylinders 1 and 2 to drive the continuous stationery (referenced P) between those cylinders. These units 4 and 5 are driven by a D.C. servo motor 6 to which a tachometer 6a is attached.
  • the automatic control and D.C. servo motor form part of the print control system, the other components of which will become apparent from the following description of the operation of the control system.
  • the continuous stationery 7 is threaded between the two cylinders 1 and 2 on the two pairs of pin-feed tractors 4 and 5.
  • the print control cylinder 2 is "down" and no printing takes place.
  • the operator positions the paper such that the..top of the form to be printed is in line with the centre line of the two cylinders. This point is known as "Top Form”.
  • the operator then commands printing to take place by an input to Control Logic 8.
  • An encoder 9 is connected to the-synchronous motor 3 and provides a signal to the control logic 8 representative of the status of the impression cylinder 1.
  • the control logic produces.
  • an output signal enabling a cylinder lift mechanism 11 attached to the print control cylinder 2.
  • an encoder 12 indicates that printing is starting.
  • a select servo control signal issues from the control logic 8, causing an analog change over switch 13 to select the impression cylinder speed signal. This signal is derived from the tachometer 10 which monitors the speed of the cylinders 1 and 2.
  • the output from the analog- change-over switch 13 is fed to a velocity servo controller 14 which causes the pin feed tractors 4 and 5 to be moved at the same speed as the peripheral speed of the cylinders 1 and 2.
  • a velocity servo controller 14 which causes the pin feed tractors 4 and 5 to be moved at the same speed as the peripheral speed of the cylinders 1 and 2.
  • two positional encoders, 15 and 16 record their movement.
  • Encoder 15 is a fine position encoder (typically detecting four thousandth of an inch) and encoder 16 is a coarse position encoder (typically detecting one eighth of an inch). Both encoders are conveniently optical having a rotatable slotted or liner disc and associated detector.
  • the output signal from the coarse position encoder 16 is fed into the decrementing counter 17.
  • the result is passed to the control logic 8.
  • the counter 17 is measuring form length
  • a reversible counter 18 is held re-set.
  • counter 18 accumulates the difference between the form length and the movement produced by the tractors 4 and 5. The difference in effect represents the overrun of the continuous stationery past the "End Form" position.
  • the print control cylinder 2 is mechanically tripped.
  • the trip position is mechanically adjustable in increments of one inch and is normally set to correspond within one inch of the present-form length.
  • the counter 18 at the end of each print cycle contains a maximum value corresponding to one inch.
  • Encoder 12 detects that the print cycle is complete from the position of the cylinder lift mechanism 11 and the select servo control signal switches 6ver the analog change over switch 13.
  • the error or overrun signal from the reversible counter 18 is converted into a d.c.voltaqe a by a digital 'to analog converter 19 which is then applied by the switch 13 to the velocity servo controller 14.
  • the continuous stationery is moved one form length every cycle to an accuracy determined by the fine position encoder.
  • the fine inaccuracies are non-cumulative.
  • the enable lift signal from logic 8 is returned to normal. This can either be commanded by the operator or automatically set by the control logic 8 when a predetermined number of forms have been printed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Handling Of Continuous Sheets Of Paper (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP86306565A 1985-09-03 1986-08-26 Drucksteuerungssystem für Druckpapierband Withdrawn EP0214804A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB858521879A GB8521879D0 (en) 1985-09-03 1985-09-03 Stationary print control system
GB8521879 1985-09-03

Publications (2)

Publication Number Publication Date
EP0214804A2 true EP0214804A2 (de) 1987-03-18
EP0214804A3 EP0214804A3 (de) 1988-06-01

Family

ID=10584657

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86306565A Withdrawn EP0214804A3 (de) 1985-09-03 1986-08-26 Drucksteuerungssystem für Druckpapierband

Country Status (3)

Country Link
EP (1) EP0214804A3 (de)
JP (1) JPS62116454A (de)
GB (1) GB8521879D0 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0350404A1 (de) * 1988-07-07 1990-01-10 Jean Lucien Sarda Formatvariable Mehrfarben-Offsetdruckmaschine für Bahnen

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102529343B (zh) * 2010-12-30 2014-09-03 北大方正集团有限公司 间歇式轮转印刷设备上多色喷墨印刷的控制方法与系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2052638A (en) * 1935-08-20 1936-09-01 American Bank Note Co Rotary web undersurface printing machine
FR2198407A5 (de) * 1972-08-29 1974-03-29 Alusuisse France Sa
US3870936A (en) * 1972-05-25 1975-03-11 Hurletron Inc Digital motor control system for web registration
US4147104A (en) * 1977-01-10 1979-04-03 Zerand Corporation Key color control system for printing press
DE3513813A1 (de) * 1985-04-17 1986-10-30 Vereinigte Numerierwerkefabriken Zeiser GmbH & Co, 7201 Emmingen Verfahren und vorrichtung zur automatischen steuerung des schrittweisen vorschubs einer folienbahn

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2052638A (en) * 1935-08-20 1936-09-01 American Bank Note Co Rotary web undersurface printing machine
US3870936A (en) * 1972-05-25 1975-03-11 Hurletron Inc Digital motor control system for web registration
FR2198407A5 (de) * 1972-08-29 1974-03-29 Alusuisse France Sa
US4147104A (en) * 1977-01-10 1979-04-03 Zerand Corporation Key color control system for printing press
DE3513813A1 (de) * 1985-04-17 1986-10-30 Vereinigte Numerierwerkefabriken Zeiser GmbH & Co, 7201 Emmingen Verfahren und vorrichtung zur automatischen steuerung des schrittweisen vorschubs einer folienbahn

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0350404A1 (de) * 1988-07-07 1990-01-10 Jean Lucien Sarda Formatvariable Mehrfarben-Offsetdruckmaschine für Bahnen
FR2633871A1 (fr) * 1988-07-07 1990-01-12 Sarda Jean Presses a imprimer offset multicolores, a format variable, pour impression de bandes continues

Also Published As

Publication number Publication date
GB8521879D0 (en) 1985-10-09
JPS62116454A (ja) 1987-05-28
EP0214804A3 (de) 1988-06-01

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Inventor name: BROOKER, REGINALD DOUGLAS

Inventor name: WILKINS, DAVID ROY GEORGE