EP0390750A2 - Prozess und Vorrichtung zur Zugregelung des Papiers in einer Druck- und/oder Schneidemaschine zur Herstellung kommerzieller Drucke auf Papierbahnen - Google Patents

Prozess und Vorrichtung zur Zugregelung des Papiers in einer Druck- und/oder Schneidemaschine zur Herstellung kommerzieller Drucke auf Papierbahnen Download PDF

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Publication number
EP0390750A2
EP0390750A2 EP90830104A EP90830104A EP0390750A2 EP 0390750 A2 EP0390750 A2 EP 0390750A2 EP 90830104 A EP90830104 A EP 90830104A EP 90830104 A EP90830104 A EP 90830104A EP 0390750 A2 EP0390750 A2 EP 0390750A2
Authority
EP
European Patent Office
Prior art keywords
paper
tension
printing
rollers
path
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Withdrawn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
EP90830104A
Other languages
English (en)
French (fr)
Other versions
EP0390750A3 (de
Inventor
Klaus Peter Jacob
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0390750A2 publication Critical patent/EP0390750A2/de
Publication of EP0390750A3 publication Critical patent/EP0390750A3/de
Withdrawn legal-status Critical Current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
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
    • B65H23/1888—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web and controlling web tension
    • 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

Definitions

  • the invention relates to a method for regulating the paper tension in a printing machine for the formation of commercial printed matter on continuous paper and a device for carrying out said method.
  • a fine-tuning of the machine is carried out by removing at the outlet after a brief period of operation a section of treated paper of approximately three meters; the distance between the first and the last punched hole is then measured and the value of the paper tension in the machine is corrected as follows: if the distance proves to be excessive compared to tolerances, the tension is increased, if it turns out to be insufficient, the tension is reduced. To achieve sufficient accuracy and reliability, it is necessary to perform several tests which result in wasted time, waste paper and ultimately cost increases which are no longer acceptable in the industry.
  • the first consists in incorporating into the printing machine a system for detecting, measuring and regulating the voltage in an automatic closed circuit; But this solution has proved to be unsuitable because the detection of the distance between the perforated holes is carried out on the paper under tension, without first knowing the exact value of the coefficient of elasticity of the paper.
  • the second system consists in providing, in the output group, for example in the folder or in the winder, a zone of paper without tension on which the detection is carried out; however, this solution also proves to be inappropriate in that said output group can only operate correctly with stretched paper, which leads to serious reliability problems throughout the line.
  • the object of the present invention is to eliminate the aforementioned drawbacks by adopting a method and a device which allow the detection and measurement of the paper tension in a printing and / or cutting machine, on a section of unstretched paper. , and to allow precise regulation without loss of time or waste of material, and above all without interfering with the operation of the production line.
  • a device for implementing said method comprises: - two rolls for driving the paper web, one at the start and one at the end of a section of paper of predetermined length and free of tension, which are arranged downstream of the printing machine and / or cutting with a cookie cutter and associated with a corresponding anti-slip binding wheel; - two idle rollers, each arranged parallel and close to a corresponding drive roller, and respectively downstream of the first and upstream of the second drive roller so as to delimit two horizontal sections of paper; - several paper return rollers interposed between said two idle rollers so as to delimit a yaw course of the paper predetermined length and with at least one of said deflection rollers movable between a position with the paper under tension and a position with the paper without tension; - Means for detecting perforated holes by cookie cutter along the longitudinal edges of the paper strip, arranged in correspondence with said horizontal sections of the paper.
  • said detection means are constituted by optical or magnetic detectors which, through a unit for comparing the values recorded with the reference values predetermined by said predetermined distance, are connected to the means for regulating the tension of the paper upstream or in the printing and / or cutting machine.
  • the solution proposed by the present invention allows the realization of a method and a device for detecting and regulating the tension of the paper precise and reliable because they are carried out with the tension-free paper, without interfering with the neither the machine operator groups located upstream, nor the output group downstream, that is to say the sheet output device, the folder or the winder, thanks to the engagement of the paper on the drive rollers at the ends of the measurement path, with considerable time savings in material, and with the possibility of continuous regulation throughout work cycle and therefore with an improvement of the finished product.
  • FIG. 1 shows a longitudinal side view of a traditional printing and punching line for commercial prints, and which relates to the present invention
  • FIG. 2 shows the schematic side view of a voltage detection and regulation device, in accordance with the invention
  • FIG. 3 shows the side view of the device of FIG. 2 installed on a line of the type shown in FIG. 1.
  • a conventional rotary printing machine for commercial prints comprises, in the direction of advancement of the paper: an unwinder 1 with the corresponding mother reel 2 of the paper strip 3 being processed; a group 4 of return rollers with a tension roller 40 and with, at the outlet, a drive drum 41; three groups 6 for offset printing and one group 7 for numeration printing; a paper transformation group 8 with a section 9 for punching out the holes for archiving, a section 10 for punching out the driving holes and a section 11 for transverse perforation; and, at the output, a winder 12.
  • the invention proposes to regulate the paper tension at the level of the unwinder 1 and in all cases, upstream of the first printing machine 6.
  • a device 5 for regulating the tension of the paper in a printing and die-cutting line for commercial prints includes: - two rollers 51, 52 for driving the paper strip, one 51 at the entry and the other 52 at the exit from the section 30 of controlled paper which is provided downstream of the last group 8 of paper transformation and upstream of the winder 12; said rollers 51, 52 being connected directly to the transmission of the printing line and each being associated with a non-slip binding wheel or roller 53 mounted on a corresponding movable axis; - two crazy rollers 54,55, each arranged parallel, coplanar and close to one of said rollers 51,52 for driving and respectively downstream of the first and upstream of the second roller so as to delimit two horizontal sections 56,57 of paper; - Five rollers 58 for returning the paper 3 distributed respectively downstream of said roller 54 and upstream of said roller 55 and in such a way as to define a lace
  • These detection means can be constituted by fixed marks and by a stroboscopic lamp, synchronized with the printing machine and which makes it possible to detect the position and the possible displacement of the perforated holes with respect to the fixed marks and therefore to regulate the tension upstream paper to get the exact match between them.
  • said detection means are constituted by optical readers, or magnetic, compressed air or other types of sensors, which are connected to the paper tension regulation means, through a programmable unit for comparing the values read with the reference values corresponding to the predetermined length of said section of paper without tension.
  • the operation is as follows.
  • the paper, at the outlet of the last transformation group 8, and before being wound up on the outlet winder 12, is passed through the device 5 along a yaw path 30.
  • the seizing rollers 53 are lowered on the driving rollers 51,52, so that that, during the movement of the roller 59 downwards to remove the tension of the paper, the latter remains adherent to the drive rollers 51, 52 thereby making precise and reliable detection possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Handling Of Continuous Sheets Of Paper (AREA)
  • Rotary Presses (AREA)
EP19900830104 1989-03-31 1990-03-15 Prozess und Vorrichtung zur Zugregelung des Papiers in einer Druck- und/oder Schneidemaschine zur Herstellung kommerzieller Drucke auf Papierbahnen Withdrawn EP0390750A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT938889 1989-03-31
IT899388A IT1233276B (it) 1989-03-31 1989-03-31 Metodo e dispositivo per la regolazione della tensione della carta in una macchina da stampa, e/o fustellatura per la formazione di moduli continui commerciali

Publications (2)

Publication Number Publication Date
EP0390750A2 true EP0390750A2 (de) 1990-10-03
EP0390750A3 EP0390750A3 (de) 1991-03-27

Family

ID=11129378

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900830104 Withdrawn EP0390750A3 (de) 1989-03-31 1990-03-15 Prozess und Vorrichtung zur Zugregelung des Papiers in einer Druck- und/oder Schneidemaschine zur Herstellung kommerzieller Drucke auf Papierbahnen

Country Status (8)

Country Link
EP (1) EP0390750A3 (de)
JP (1) JPH02281946A (de)
AR (1) AR245648A1 (de)
BR (1) BR9001477A (de)
CA (1) CA2013308A1 (de)
FI (1) FI901567A0 (de)
IT (1) IT1233276B (de)
NO (1) NO901467L (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005124470A2 (de) * 2004-06-21 2005-12-29 Oce Printing Systems Gmbh Drucker oder kopierer zum bedrucken eines endlosen trägermaterials mit querfalzen sowie verfahren zum steuern eines solchen druckers oder kopierers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012155170A (ja) * 2011-01-27 2012-08-16 Seiko Epson Corp 搬送装置、画像形成装置及び搬送方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2250696A1 (de) * 1973-11-13 1975-06-06 Bobst Fils Sa J
WO1986002318A1 (en) * 1984-10-18 1986-04-24 Mitsubishi Jukogyo Kabushiki Kaisha Rotary press starting structure

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2250696A1 (de) * 1973-11-13 1975-06-06 Bobst Fils Sa J
WO1986002318A1 (en) * 1984-10-18 1986-04-24 Mitsubishi Jukogyo Kabushiki Kaisha Rotary press starting structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005124470A2 (de) * 2004-06-21 2005-12-29 Oce Printing Systems Gmbh Drucker oder kopierer zum bedrucken eines endlosen trägermaterials mit querfalzen sowie verfahren zum steuern eines solchen druckers oder kopierers
WO2005124470A3 (de) * 2004-06-21 2006-06-08 Oce Printing Systems Gmbh Drucker oder kopierer zum bedrucken eines endlosen trägermaterials mit querfalzen sowie verfahren zum steuern eines solchen druckers oder kopierers
US8437681B2 (en) 2004-06-21 2013-05-07 OCéPRINTING SYSTEMS GMBH Printer or copier for printing an endless support material comprising transversal folds, and method for controlling such a printer or copier

Also Published As

Publication number Publication date
JPH02281946A (ja) 1990-11-19
IT1233276B (it) 1992-03-26
EP0390750A3 (de) 1991-03-27
FI901567A0 (fi) 1990-03-29
NO901467D0 (no) 1990-03-30
CA2013308A1 (en) 1990-09-30
AR245648A1 (es) 1994-02-28
BR9001477A (pt) 1991-04-16
NO901467L (no) 1990-10-01
IT8909388A0 (it) 1989-03-31

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