WO2017194299A1 - Procédé et dispositif pour imprimer une bande de matière à imprimer à l'intérieur d'une presse rotative - Google Patents

Procédé et dispositif pour imprimer une bande de matière à imprimer à l'intérieur d'une presse rotative Download PDF

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Publication number
WO2017194299A1
WO2017194299A1 PCT/EP2017/059717 EP2017059717W WO2017194299A1 WO 2017194299 A1 WO2017194299 A1 WO 2017194299A1 EP 2017059717 W EP2017059717 W EP 2017059717W WO 2017194299 A1 WO2017194299 A1 WO 2017194299A1
Authority
WO
WIPO (PCT)
Prior art keywords
printing
length
pressure
measured
roller
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.)
Ceased
Application number
PCT/EP2017/059717
Other languages
German (de)
English (en)
Inventor
Mario FRANKENBERG
Rainer Ehrenberg
Frank Westhof
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
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 Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Priority to EP17719569.0A priority Critical patent/EP3455073B1/fr
Priority to ES17719569T priority patent/ES2864766T3/es
Publication of WO2017194299A1 publication Critical patent/WO2017194299A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0081—Devices for scanning register marks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/10—Forme cylinders
    • B41F13/12—Registering devices
    • B41F13/14—Registering devices with means for displacing the cylinders

Definitions

  • the invention relates to a method for printing a printing material web within a rotary printing press according to the preamble of patent claim 1 and to a device according to the preamble of patent claim 8.
  • Rotary printing machines in which a print motif is repeatedly applied to a substrate web, are printed motifs applied by a pressure roller.
  • the printing material web runs on an impression cylinder.
  • the peripheral speeds of the pressure roller and the impression cylinder are the same.
  • the problem is that within the printing material web, the web tension can be significantly different. This can lead to the fact that the print lengths on the finished printed substrate web are also different, which often leads to disadvantages in the further processing of such printed webs.
  • Print length is the distance between two equal points within two consecutive print motifs. These can be, for example, the register points.
  • the position of the pressure on the unwound web is corrected by correction of the web tension by means of web-fed preferred in front of the pressure roller in the form that the printing material web is stretched to a constant printing length by, depending on the measured printing length, the material with A higher or lower web tension is influenced in its elongation in order to be able to supply the printing roller a printing material web, which has both a constant repeat length, which corresponds to the pressure length of the new pressure and the position of the new pressure.
  • the disadvantages of this method are that the influence on the correction of the repeat length is limited by changing the web tension.
  • the web tension must not be arbitrarily low in order to achieve a shortening of the repeat length, since a minimum web tension is always required to drive the material web safely through the machine.
  • the web tension must not be arbitrarily high in order to achieve an extension of the repeat length, since too high web tension can permanently change the printing material by causing permanent plastic deformation if the material's typical yield strength is exceeded.
  • the object of the present invention is therefore to propose a method and a device for printing a printing material web within a rotary printing press, with which the disadvantages described above can be avoided. According to the invention this object is achieved by all features of claim 1.
  • possible embodiments of the invention are given. According to the present invention, it is provided that with at least one pressure roller, a printing motif is applied to the substrate, wherein the pressure roller rotates at a peripheral speed, wherein by means of at least one arranged within the rotary printing machine measuring a pressure length is measured and wherein the peripheral speed of the at least one pressure roller changed when the measured print length deviates from a desired print length.
  • the Kemgedanke of the invention is thus to measure the print length on the substrate and to suitably change the peripheral speed of the pressure roller, when this measured pressure length deviates from a desired pressure length.
  • the printing length can now be changed, in which case the peripheral speed of the impression cylinder is not or at least not changed to the same extent. It can therefore come to different peripheral speeds of the pressure roller and the impression cylinder.
  • the context applies that at lower speeds of the format cylinder drives than the web speed longer formats are printed and at higher speed of the format cylinder drives than the web speed shorter formats are printed.
  • a big advantage of the method is that the printing material web now no longer have to be impressed on changed web tension, as was the case in the prior art. This is achieved, for example, in that the printing material web is now moved with constant tensile force. In other words, the web tension of the printing material web remain unaffected.
  • the inventive method allows in the first place the comprehensive adaptation of the printing length in stretch-stiff materials such as paper or metal foils. It is advantageous if the measurement of the printing length is carried out before the printing material reaches the printing roller. In this case, the circumferential speed of the platen roller can be set individually even for each of these print motifs in the case of existing print motifs on the back side.
  • a measured print length and the subsequently changed print length of the print roller form a new desired print length with which the print lengths of the subsequent print motifs are compared.
  • the freshly printed printing length is measured with the measuring device after the relevant print motif has left the printing roller.
  • This embodiment is directed to determining the printing length of a printing material web printed in particular only on one side and to adjust the printing length according to a predetermined nominal printing length for subsequent print motifs still to be printed. If, therefore, an excessively long printing length is measured, then the printing length of the printing cylinder must be shortened by being driven at a greater printing speed. Conversely, when too small a printing length is measured, the printing length of the printing roller is to be extended by being driven at a lower printing speed.
  • the printing of a printing material web is provided within a multi-color rotary printing press.
  • a preferred solution to this problem is disclosed in WO 2014/020083 A2, which is hereby incorporated by reference in its entirety by reference in this patent application.
  • features of this patent application may be arbitrary with features of the above WO 2014/020083 A2 are combined in order to describe and claim advantageous embodiments of the present invention.
  • FIG. 1 side view of a printing machine according to the invention, with which the inventive method is feasible.
  • FIG. 2 side view of a printing machine according to the invention, with which the inventive method can be carried out in a further embodiment.
  • FIG. 1 shows a side view of a printing press according to the invention.
  • This printing machine 1 comprises a printing unit 2, which has a central impression cylinder 3.
  • the impression cylinder 3 is rotatably mounted in a machine frame, not shown.
  • the printing material web 7 is provided in the printing press on a winding 8, which is rotatably mounted in an unwinding station 9.
  • the unwound substrate web 7 is guided over several guide rollers 10 from the unwinding station 9 to the pressure roller 11, with which the printing substrate 7 can be applied to the impression cylinder.
  • the web path between the unwinding station 9 and the pressure roller is regarded as feed path 12 of the printing material web 7.
  • the printing material 7 After the printing material 7 has passed through the printing unit 2, it is fed to the drying box 15 There it is guided over numerous guide rollers 18 to dryers not shown and / or other devices which serve to cure the ink. After leaving the dry box, the web 7 of the winding station 16 is supplied, where it is processed into a roll 17 on. The web 7 is always performed between the printing unit 2 and the winding station 16 so that it rests with the unprinted side on the guide rollers 18.
  • the print length is determined.
  • This measured value is transmitted to the computing and control unit 22 via the data line 21.
  • the computing and control unit 22 now compares the measured print length with a desired print length, which preferably corresponds to the previously measured print length. If the measured pressure length deviates from the desired pressure length, the arithmetic and control unit transmits control commands via the control line 23 to the drive M of the pressure roller 5.
  • This situation is illustrated by way of example only for the first inking unit 4, but this also applies to the further inking units 4
  • the control command or commands lead to a change in the peripheral speed of the pressure roller 5, which depends on the size of the deviation described above.
  • FIG. 2 shows a further embodiment of the invention.
  • the sensor 20 is now arranged behind the inking units 4 in the transport direction of the printing material web 7. This means that the printing substrate 7 is already printed. By contrast, it is not necessary that the sensor is also arranged behind the drying box 15.
  • the sensor 20 now monitors the printed length in the printing substrate 1 printed on the printing length and compares it with a value for the nominal printing length, which is the computer and control unit can be predetermined.
  • This target pressure length can be directly the circumference of the impression cylinder 5. If, however, a pressure length differing from this nominal pressure length is detected during the measurement, then the computing and control device sends a control command to the motor M of the pressure roller 5 in order to change the circumferential speed. In this embodiment, however, the target pressure length is preferably not changed. In this way it is possible to always obtain the same printing length even with web tension variations within the printing material web 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Abstract

L'invention concerne un procédé et un dispositif pour imprimer une bande de matière à imprimer (7) à l'intérieur d'une presse rotative (1). A cet effet, un motif d'impression est appliqué au moyen d'au moins un cylindre d'impression (5) sur la bande de matière à imprimer, ledit cylindre d'impression (5) tournant à une certaine vitesse périphérique. Une longueur d'impression est mesurée au moyen d'au moins un dispositif de mesure (20) disposé à l'intérieur de la presse rotative et la vitesse périphérique dudit au moins un cylindre d'impression (5) est modifiée si la longueur d'impression mesurée dévie d'une longueur d'impression de consigne.
PCT/EP2017/059717 2016-05-11 2017-04-25 Procédé et dispositif pour imprimer une bande de matière à imprimer à l'intérieur d'une presse rotative Ceased WO2017194299A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP17719569.0A EP3455073B1 (fr) 2016-05-11 2017-04-25 Procédé et dispositif pour imprimer une bande de matière à imprimer à l'intérieur d'une presse rotative
ES17719569T ES2864766T3 (es) 2016-05-11 2017-04-25 Procedimiento y dispositivo para imprimir una banda de soporte de impresión en el interior de una máquina impresora rotativa

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016208132 2016-05-11
DE102016208132.2 2016-05-11

Publications (1)

Publication Number Publication Date
WO2017194299A1 true WO2017194299A1 (fr) 2017-11-16

Family

ID=58632982

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/059717 Ceased WO2017194299A1 (fr) 2016-05-11 2017-04-25 Procédé et dispositif pour imprimer une bande de matière à imprimer à l'intérieur d'une presse rotative

Country Status (3)

Country Link
EP (1) EP3455073B1 (fr)
ES (1) ES2864766T3 (fr)
WO (1) WO2017194299A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117157199A (zh) * 2021-07-13 2023-12-01 柯尼格及包尔公开股份有限公司 加工机以及用于调节加工机的成型总成的加工长度的方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114523756A (zh) * 2022-02-09 2022-05-24 福建琦峰科技有限公司 一种满足套色稳定的印刷图案长度控制方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3559568A (en) * 1969-01-14 1971-02-02 Armstrong Cork Co Method of controlling pattern repeat length
US20060016359A1 (en) * 2004-07-10 2006-01-26 Ford Jerry W Method for correcting print reheat length variability in printed extensible materials and product

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3559568A (en) * 1969-01-14 1971-02-02 Armstrong Cork Co Method of controlling pattern repeat length
US20060016359A1 (en) * 2004-07-10 2006-01-26 Ford Jerry W Method for correcting print reheat length variability in printed extensible materials and product

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117157199A (zh) * 2021-07-13 2023-12-01 柯尼格及包尔公开股份有限公司 加工机以及用于调节加工机的成型总成的加工长度的方法
CN117157199B (zh) * 2021-07-13 2024-05-03 柯尼格及包尔公开股份有限公司 加工机以及用于调节加工机的成型总成的加工长度的方法

Also Published As

Publication number Publication date
EP3455073B1 (fr) 2021-02-24
EP3455073A1 (fr) 2019-03-20
ES2864766T3 (es) 2021-10-14

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