EP3543013B1 - Machine à imprimer à bobines - Google Patents

Machine à imprimer à bobines Download PDF

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Publication number
EP3543013B1
EP3543013B1 EP18163065.8A EP18163065A EP3543013B1 EP 3543013 B1 EP3543013 B1 EP 3543013B1 EP 18163065 A EP18163065 A EP 18163065A EP 3543013 B1 EP3543013 B1 EP 3543013B1
Authority
EP
European Patent Office
Prior art keywords
web
roll
printing machine
machine according
openings
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.)
Active
Application number
EP18163065.8A
Other languages
German (de)
English (en)
Other versions
EP3543013A1 (fr
Inventor
Peter Hachmann
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
Priority to EP18163065.8A priority Critical patent/EP3543013B1/fr
Priority to CN201910187797.3A priority patent/CN110293773B/zh
Priority to JP2019052737A priority patent/JP7222769B2/ja
Priority to US16/360,241 priority patent/US10717301B2/en
Publication of EP3543013A1 publication Critical patent/EP3543013A1/fr
Application granted granted Critical
Publication of EP3543013B1 publication Critical patent/EP3543013B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/02—Platens
    • B41J11/04—Roller platens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
    • B41J15/005—Forming loops or sags in webs, e.g. for slackening a web or for compensating variations of the amount of conveyed web material (by arranging a "dancing roller" in a sag of the web material)
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
    • B41J15/02—Web rolls or spindles; Attaching webs to cores or spindles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
    • B41J15/04—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/21—Ink jet for multi-colour printing
    • 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
    • B65H23/24—Registering, tensioning, smoothing or guiding webs longitudinally by fluid action, e.g. to retard the running web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/31—Features of transport path
    • B65H2301/311—Features of transport path for transport path in plane of handled material, e.g. geometry
    • B65H2301/31122—Omega-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/15—Digital printing machines

Definitions

  • the present invention relates to a printing machine for printing on a web, comprising a first roll and a second roll, between which the web forms a loop.
  • a web printing machine comprising a system of driven axes for feeding a web to processing stations and for guiding the web in at least one compensating loop forming a material store.
  • the object of the invention is to create a printing machine in which the web is guided gently.
  • a printing machine for printing a web comprising a first roll and a second roll, between which the web forms a loop, characterized in that between the first roll and the second roll a simply curved shell is arranged with suction openings and / or blow openings for the pneumatic guidance of the loop which is equidistant with respect to a predominant length of curvature of the shell.
  • the printing machine can be a digital printing machine, preferably for inkjet printing.
  • the shell can have suction openings and blow openings for the contactless guiding of the loop.
  • the suction openings and blowing openings can be active at the same time in order to keep the web at a defined distance from the tray.
  • the suction openings can be grooves which run in the transport or running direction of the web or at an angle to it.
  • the grooves can preferably run parallel to one another or diverge from one another in the machine direction, for example in order to tighten the web in the transverse direction.
  • the blow openings can form rows of nozzles which are arranged alternately with the suction openings.
  • the rows of nozzles can consist of bores, for example, which eject the blown air in a radial direction with respect to the nozzle surface of the shell.
  • the shell can be arranged on the outside of the loop and a support roller can be arranged on the inside of the loop, which is out of contact with the web in the trouble-free printing operation.
  • the strength of the suction air of the suction openings and the blowing air of the blowing openings can be balanced in such a way that the web runs floating between the two without contact with the shell and the support roller.
  • the support roller only needs to support the web when the suction air of the tray is not active, e.g. if the vacuum generator to which the tray is connected fails or is switched off, e.g. when the web is being fed in or during another set-up process.
  • An inner peripheral surface of the shell and an outer peripheral surface of the support roller can be parallel to each other.
  • the shell and support roller can delimit a semicircular gap between them through which the web runs without contact during printing.
  • a format setting device for setting the suction openings to the respective width of the web can be present.
  • the same format setting device or an additional format setting device can be used to adjust the blow openings to the respective width of the web.
  • Each format setting device can be a valve with a gate valve.
  • the blower openings can be throttle nozzles in which the air flow is throttled by a filter insert or a channel labyrinth.
  • the filter insert can be a Be a piece of foam that sits in the nozzle bore.
  • the channel labyrinth can be a perforated plate labyrinth which forms a channel for connecting the blow openings to a blower air generator.
  • the first roller and / or the second roller can be a cooling roller for cooling the web, the cooling roller having a cooling fluid flowing through it.
  • each cooling roller can be integrated into a circuit through which the cooling fluid is circulated with a pump.
  • the first roller, the second roller and the tray can be arranged along a transport path of the web between a drying or pinning device and at least one subsequent inkjet print head.
  • the web guide, to which the two rollers and the tray belong can be arranged after a primer or primer coating device, e.g. for opaque white, and in front of a device for multi-color inkjet printing, e.g. with four or more pressure bars.
  • Figure 1 shows a digital printing machine through which a web B of printing material runs in a direction R indicated by the arrow.
  • a primer or a primer is applied to the web B with a coating device 10, which is designed as an inkjet print head.
  • the applied primer or the applied primer is dried with a pinning device 8.
  • one or more inkjet print heads 9 are used to print a print image on the primer or the primer.
  • a first roller 1 and a second roller 2 are arranged along the path B between the pinning device 8 and the inkjet printing head 9, and a tray 3 and a support roller 6 are arranged between the two rollers 1, 2. Between the two rolls 1, 2, the web B forms a loop or loop S.
  • the shell 3 is on the same side of the web B as the rolls 1, 2, namely the back of the web B which is not coated by the coating device 10 the opposite side, namely the front side of the web B coated by the coating device 10, is the support roller 6.
  • the shell 3 ensures that the loop S is stable, so that the web B wraps around the rolls 1, 2 over a maximized circumferential angle.
  • the area of contact between the web B and the roller 1 or 2 is large and the heat transfer from the web B to the respective roller 1 or 2 is also correspondingly large.
  • the web B When the web B is treated with the pinning device 8, the web B is heated in an undesirable manner, which is an unavoidable side effect. This heating of the web B would be detrimental to the print quality when printing the web B with the inkjet print head 9 if no countermeasures are taken. Without a countermeasure, longitudinal folds would occur in the web B, which would be visible in the print image of the inkjet print head 9.
  • the countermeasure consists in cooling the web B by means of one or preferably both rollers 1, 2, for which purpose these are designed as cooling rollers.
  • the roles 1, 2 are traversed by a coolant, for example cooling water, and bring about a lowering of the temperature of the web B to a value at which the longitudinal folds do not occur and the subsequent inkjet printing is not impaired.
  • Figure 2 shows that the shell 3 has a length of curvature L which, in the present case of the ideally circular-arc-shaped shell 3, is a circular arc length.
  • L the length of curvature
  • the distance a is constant along almost the entire length of the curvature L. Only in the two end sections of the length of curvature L, namely the inlet area and outlet area of the web B, the distance a can be different, for example smaller, than in the main section of the length of curvature L lying in between, due to special pneumatic features.
  • Figure 3 shows the shell 3 as an individual part in a developed view with a view of the nozzle surface of the shell 3, which faces the web B.
  • the one-dimensionally curved guide surface or nozzle surface of the shell 3 has the geometric axis of rotation of the support roller 6 as its center of curvature.
  • the inner peripheral surface or guide surface of the shell 3 thus runs concentrically with the outer peripheral surface of the support roller 6 - cf. Figure 2 .
  • Suction openings 4 and blow openings 5 are made in the guide surface or nozzle surface.
  • the suction openings 4 are connected via a format setting device 7 to a vacuum generator, not shown in detail, and the blow openings 5 are connected via the format setting device 7 to a compressed air source not shown in detail.
  • the blow openings 5 are designed as throttle nozzles and are arranged in rows which run parallel to the running direction R of the web B.
  • the suction openings 4 are designed as grooves which also run parallel to the direction R of travel. Viewed transversely to the direction of travel R, the suction openings 4 are arranged alternating with the blow openings 5.
  • Deviating from the in Figure 3 The pattern shown can also run several rows of throttle nozzles between two suction grooves and / or several suction grooves can also run between two rows of throttle nozzles.
  • the suction openings 4 and / or blowing openings 5 lying outside the format width of the web B and not covered by it can be deactivated.
  • the strength of the vacuum applied to the suction openings 4 and the strength of the blown air ejected from the vacuum openings 5 are balanced to one another so that the air drawn in through the suction openings 4 and at the same time carried by the blow openings 5 on an air cushion Web B without contact with the shell 3 and also without contact with the support roller 6 runs floating between the two as long as the printing operation is free of disruptions.
  • the web B can contact the support roller 6 and cling to it during a fault in the printing operation or during a foreseen or unforeseen interruption in printing. If the web B continues to run during the disturbance or printing interruption, the web B can drive the support roller 6 around which it wraps by means of circumferential surface friction. The support roller 6 can run along with the web B without its own drive.
  • Figure 4 shows a modification which differs from the example in Figure 3 only differs in that the grooves (suction openings 4) and the rows of throttle nozzles (Blowing openings 5) run obliquely at a preferably acute angle relative to the running direction R of the web B.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ink Jet (AREA)
  • Handling Of Continuous Sheets Of Paper (AREA)
  • Advancing Webs (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Handling Of Sheets (AREA)

Claims (10)

  1. Machine à imprimer pour impression d'une bande (B), comprenant un premier rouleau (1) et un deuxième rouleau (2), entre lesquels la bande (B) forme une boucle (S), caractérisée en ce
    qu'entre le premier rouleau (1) et le deuxième rouleau (2) se trouve un bac (3) à courbure simple avec des ouvertures d'aspiration (4) et/ou des ouvertures de soufflage (5) pour le guidage pneumatique, sans contact et équidistant de la boucle (S) par rapport à une longueur de courbure prédominante (L) du bac (3).
  2. Machine à imprimer selon la revendication 1,
    caractérisée en ce
    que le bac (3) présente des ouvertures d'aspiration (4) et des ouvertures de soufflage (5) pour le guidage sans contact de la boucle (S).
  3. Machine à imprimer selon la revendication 2,
    caractérisée en ce
    que les ouvertures d'aspiration (4) sont des rainures qui sont soit parallèles au sens de déplacement (R) de la bande (B), soit obliques par rapport au sens de déplacement (R).
  4. Machine à imprimer selon la revendication 2 ou 3,
    caractérisée en ce
    que les ouvertures de soufflage (5) forment des rangées de buses disposées en alternance avec les ouvertures d'aspiration (4).
  5. Machine à imprimer selon l'une des revendications 1 à 4,
    caractérisée en ce
    que le bac (3) est logé du côté extérieur de la boucle (S) et, qu'à l'intérieur de la boucle (S), se trouve un rouleau d'appui (6) qui n'est pas en contact avec la bande (B) en mode impression sans perturbation.
  6. Machine à imprimer selon la revendication 5,
    caractérisée en ce
    qu'une surface circonférentielle intérieure du bac (3) et une surface circonférentielle extérieure du rouleau d'appui (6) sont parallèles l'une à l'autre.
  7. Machine à imprimer selon l'une des revendications 2 à 6,
    caractérisée en ce
    qu'un dispositif de réglage de format (7) est prévu pour régler les ouvertures d'aspiration (4) à la largeur respective de la bande (B).
  8. Machine à imprimer selon l'une des revendications 2 à 7,
    caractérisée en ce
    que les ouvertures de soufflage (5) sont des buses d'étranglement, dans lesquelles le flux d'air est étranglé par un insert filtrant ou un labyrinthe de canaux.
  9. Machine à imprimer selon l'une des revendications 1 à 8,
    caractérisée en ce
    que le premier rouleau (1) et/ou le deuxième rouleau (2) est un rouleau refroidisseur pour refroidir la bande (B), le rouleau refroidisseur étant traversé par un fluide de refroidissement.
  10. Machine à imprimer selon l'une des revendications 1 à 9,
    caractérisée en ce
    que le premier rouleau (1), le deuxième rouleau (2) et le bac (3) sont disposés le long d'un chemin de transport de la bande (B) entre un dispositif de séchage ou d'ancrage (8) et au moins une tête à imprimer à jet d'encre (9) située en aval.
EP18163065.8A 2018-03-21 2018-03-21 Machine à imprimer à bobines Active EP3543013B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP18163065.8A EP3543013B1 (fr) 2018-03-21 2018-03-21 Machine à imprimer à bobines
CN201910187797.3A CN110293773B (zh) 2018-03-21 2019-03-13 幅带印刷机
JP2019052737A JP7222769B2 (ja) 2018-03-21 2019-03-20 ウェブ印刷機
US16/360,241 US10717301B2 (en) 2018-03-21 2019-03-21 Web-fed printing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18163065.8A EP3543013B1 (fr) 2018-03-21 2018-03-21 Machine à imprimer à bobines

Publications (2)

Publication Number Publication Date
EP3543013A1 EP3543013A1 (fr) 2019-09-25
EP3543013B1 true EP3543013B1 (fr) 2021-06-09

Family

ID=61731677

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18163065.8A Active EP3543013B1 (fr) 2018-03-21 2018-03-21 Machine à imprimer à bobines

Country Status (4)

Country Link
US (1) US10717301B2 (fr)
EP (1) EP3543013B1 (fr)
JP (1) JP7222769B2 (fr)
CN (1) CN110293773B (fr)

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3061159A (en) * 1958-09-15 1962-10-30 A C T Inc Air actuated self-energizing tensioning system
DE1951002C3 (de) * 1969-10-09 1974-02-07 Vits-Maschinenbau Gmbh, 4018 Langenfeld Einrichtung zur berührungslosen Stabilisierung einer in ihrer Längsrichtung gespannten und bewegten Warenbahn
US3807612A (en) * 1973-05-15 1974-04-30 Fmc Corp Web feeding apparatus for blank making machine
DE2365668C3 (de) * 1973-08-27 1979-10-25 Juergen 1000 Berlin Schulz Vorrichtung zur Verarbeitung bahnförmigen Materials mit einem Rotationsdruckwerk
DD228795A1 (de) * 1984-11-19 1985-10-23 Polygraph Leipzig Bogenleiteinrichtung im auslagetrommelbereich von druckmaschinen
JP2001301301A (ja) * 2000-04-26 2001-10-31 Riso Kagaku Corp 孔版印刷装置
DE10032675B4 (de) * 2000-07-05 2006-06-14 Aradex Ag Bahnverarbeitende Maschine
JP2005305794A (ja) * 2004-04-21 2005-11-04 Komori Corp シート状物の乾燥機
DE102007034246B4 (de) 2007-07-23 2010-10-28 OCé PRINTING SYSTEMS GMBH Einrichtung mit einer Vorzentriervorrichtung und einer Puffervorrichtung für die Zufuhr einer Bedruckstoffbahn zu einer Druckeinrichtung
JP4963683B2 (ja) * 2008-03-31 2012-06-27 富士フイルム株式会社 インクジェット記録装置
JP5885335B2 (ja) 2012-01-06 2016-03-15 東レエンジニアリング株式会社 エアダンサー
JP2014101159A (ja) 2012-11-16 2014-06-05 Bellmatic Ltd 搬送装置
KR102023581B1 (ko) * 2012-11-23 2019-09-24 해성디에스 주식회사 릴-투-릴 검사장치 및 릴-투-릴 검사방법
CN103465621B (zh) * 2013-09-11 2015-07-08 上海美声服饰辅料有限公司 一种气浮式丝网印刷品干燥系统和方法
CN204894762U (zh) * 2015-07-27 2015-12-23 天津中荣印刷科技有限公司 一种印刷机烘干装置

Also Published As

Publication number Publication date
CN110293773B (zh) 2021-04-09
US10717301B2 (en) 2020-07-21
JP7222769B2 (ja) 2023-02-15
US20190291470A1 (en) 2019-09-26
CN110293773A (zh) 2019-10-01
JP2019167245A (ja) 2019-10-03
EP3543013A1 (fr) 2019-09-25

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