WO2009143854A1 - Rouleau à déplacement axial dans une unité d’impression - Google Patents

Rouleau à déplacement axial dans une unité d’impression Download PDF

Info

Publication number
WO2009143854A1
WO2009143854A1 PCT/DK2009/050121 DK2009050121W WO2009143854A1 WO 2009143854 A1 WO2009143854 A1 WO 2009143854A1 DK 2009050121 W DK2009050121 W DK 2009050121W WO 2009143854 A1 WO2009143854 A1 WO 2009143854A1
Authority
WO
WIPO (PCT)
Prior art keywords
roller
printing machine
slide
bearing
sleeve
Prior art date
Application number
PCT/DK2009/050121
Other languages
English (en)
Inventor
Klaus Nordby
Søren MAARSSØ
Original Assignee
Tresu A/S
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 Tresu A/S filed Critical Tresu A/S
Publication of WO2009143854A1 publication Critical patent/WO2009143854A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/10—Devices for attaching printing elements or formes to supports for attaching non-deformable curved printing formes to forme cylinders
    • B41F27/105—Devices for attaching printing elements or formes to supports for attaching non-deformable curved printing formes to forme cylinders for attaching cylindrical printing formes
    • 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
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/26—Arrangement of cylinder bearings
    • B41F13/30—Bearings mounted on sliding supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F30/00—Devices for attaching coverings or make-ready devices; Guiding devices for coverings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
    • B41P2227/20—Means enabling or facilitating exchange of tubular printing or impression members, e.g. printing sleeves, blankets
    • B41P2227/21—Means facilitating exchange of sleeves mounted on cylinders without removing the cylinder from the press

Definitions

  • the present invention concerns a method for dismounting as well as mounting a replaceable sleeve on a rotatable and radially displaceable roller which is a roller for a printing unit in a printing machine, e.g. a flexo-printing machine.
  • the invention furthermore concerns such a printing machine with at least one printing unit, wherein the roller at a first end is provided with a first shaft end in a first bearing and at the other end is provided with a second shaft end in a second bearing, where these bearings are arranged in two radially displaceable slides on the printing machine, and where the roller can be released from the printing machine at one end of the roller by the roller being displaced axially in its longitudinal direction prior to dismounting a sleeve, whereby the roller is withdrawn from engagement with one radially displaceable slide.
  • rollers with different exchangeable surfaces may be so-called sleeves which are cylindric shells mounted on a mandrel which constitutes the innermost part of a roller for a printing machine.
  • sleeves which are cylindric shells mounted on a mandrel which constitutes the innermost part of a roller for a printing machine.
  • sleeves are i.a. known from EP 1 361 073, EP 0 787 597 and EP 0 732 201.
  • These sleeves may be with an internal conical shape or with cylindric shape.
  • the inner part of the roller may advantageously be with a number of openings through which compressed air is conducted during mounting and dismounting.
  • the sleeve By the outflowing air is obtained a supporting layer of air allowing the sleeve to be positioned in a correct and precise position.
  • This solution requires that the sleeve is elastic, or that at least the inner part of the sleeve is elastic.
  • the sleeve may therefore be entirely or partly elastic.
  • the sleeve may e.g. be of a rubber material, possibly several different layers with different properties.
  • Another solution is an outer layer which is very rigid and one or more inner layers which are elastic and compressible during mounting.
  • Such sleeves require that the roller on which they are to be mounted is released at one end, and that the bearing pedestal on which the roller is seated during operation, is removed prior to mounting or replacement of the sleeve on the roller. This is typically provided by dismounting the pedestal, or at least releasing it from the machine so much that access to the machine is obtained from the operator side of the machine.
  • This disassembling of the machine is, however, rather inexpedient, as disassembling and subsequent assembling are cost-increasing processes that advantageously could be omitted.
  • the construction of the machine itself is complex, cumbersome and costly.
  • the invention concerns a method for dismounting as well as mounting a replaceable sleeve on a rotatable and radially displaceable roller which is a roller for a printing unit in a printing machine, e.g. a flexo-printing machine.
  • the invention furthermore concerns such a printing machine with at least one printing unit, wherein the roller at a first end is provided with a first shaft end in a first bearing and at the other end is provided with a second shaft end in a second bearing, where these bearings are arranged in two radially displaceable slides on the printing machine, and where the roller can be released from the printing machine at one end of the roller by the roller being displaced axially in its longitudinal direction prior to dismounting a sleeve, whereby the roller is withdrawn from engagement with one radially displaceable slide.
  • the method and the printing unit according to the invention are adapted such that the roller is provided with displacing means, and by these it is displaced in its longitudinal direction prior to dismounting a sleeve, whereby the roller is drawn out of engagement with the one fixed and radially displaceable slide.
  • the axial displacement is preferably between 30 and 80 mm, more specifically between 40 and 60 mm.
  • the new feature according to the invention is that the slide and the roller are displaced radially in relation to each other, whereafter the sleeve can be released and dismounted by being drawn off the roller in its longitudinal direction.
  • the mechanical solution itself may be designed much more stable, as the slide at the released end of the roller is not to be designed such as to be readily disassembled or such that the slide at the other end of the roller has to be adapted to turning or pivoting the roller to a side. Therefore, this is a fixed slide which only can be moved in radial direction.
  • Such a solution is cheaper to make as well as being more robust and stable. Moreover, minor inaccuracies do not arise after disassembling and assembling which otherwise entail fine adjustment before restarting the machine.
  • the slide may be adapted to be pivoted aside after releasing the roller from the slide in order to provide space for replacing the sleeve.
  • both a radial displacement and a pivoting movement of the slide can be applied at the first end of the roller.
  • the axial displacement of the roller in its longitudinal direction includes a displacement of at least part of the other slide in which the second end of the roller is suspended by the second bearing.
  • the roller at the second end is seated in a displaceable bearing housing in the second slide, where the bearing housing is displaceable in axial direction of the roller, and where the bearing housing and the shaft end are preferably with more than one bearing.
  • the bearing housing may be with more than one bearing, entailing the advantage that the roller can be released at the first end without requiring support of the roller during replacement of the sleeve. Such a support is space- demanding and cumbersome to handle as it must not interfere with the sleeve during the replacement.
  • Another advantage of using more than one bearing is that it is easier to ensure a precise disposition of the two slides opposite each other after replacing a sleeve.
  • the displaceable bearing housing in the second slide also has the function that it is used for regulating the lateral position of the roller relative to other printing units in a printing machine. It is important that successive prints are placed exactly over each other, both in longitudinal and transverse direction of the print.
  • This displacing mechanism may advantageously be the same which is used for both regulation of the side register and for disassembly by replacement of a sleeve.
  • the solution is simple as a printing machine is typically with a displaceable device which only is used for controlling the side register.
  • This displaceable device may easily be extended by a suitable length, e.g. 50 mm.
  • the solution can be realised in that the prior art side displacement rails are purchased with the said additional length and subsequently incorporated in the actual slide. It is thus a rather simple solution that may readily be performed.
  • the radial movement of the two slides is effected by means which already are on a printing machine as these are equipped with displacement means in radial direction, by which respective rollers in a printing unit in a printing machine are mutually adjusted. This is usual in that rollers with the same diameter are not always used and because during reconfiguration of the machine it may be necessary to create space.
  • the axial movement of the roller may be intended for the first bearing at the first end of the roller being drawn out of the first slide by the said axial movement.
  • the printing machine is provided with means for receiving, retaining and releasing one or more bearings that remain secured on the first shaft end of the roller during separation of the roller from the slide.
  • the first shaft end at the first end of the roller is drawn out of the first bearing, which e.g. may be a needle bearing, by the axial movement.
  • the printing machine is provided at the first slide with one or more permanently mounted bearings, where the first shaft end of the roller is provided with means for receiving, retaining and releasing one or more bearings.
  • the said means for retaining and releasing the bearing/bearings in relation to either the shaft end or the slide may be arranged on or in connection with the bearing/bearings.
  • the invention as described above may advantageously be used in replacing the sleeve on printing cylinders with cliches, but may also be used in connection with replacing sleeves on screen rollers/anilox rollers.
  • Fig. 1 shows a roller in a printing unit in operating position.
  • Fig. 2 shows a roller in a printing unit in axially displaced position.
  • a roller 1 which at its first end 2 is provided with a shaft end 3 that is seated in a recess 5 via a bearing 4 in a first slide 6.
  • This first slide 6 is on the side of the printing machine called the operator side. This is of course the side from which the machine is operated.
  • a somewhat longer shaft end 8 which is here suspended by two bearings 9 in a recess 10.
  • the recess 10 is in a displaceable bearing housing 11 which may be displaced in axial direction of the roller in the second slide 12.
  • the bearing housing 11 is displaced with a spindle arrangement 13 which is shown here with a handwheel 14 for operating the spindle and thereby the axial displacement of the roller 1.
  • This regulation may of course also be performed automatically, e.g. by an electric motor.
  • a coupling 15 which via a gear 16 forms connection with the driving motor 17.
  • Fig. 2 is seen the same variant of the invention as in Fig. 1, but here shown with the roller 1 in an axially displaced position where the shaft end 3 is drawn free of the bearing 4 and thereby of the first slide 6.
  • This axial displacement is effected by using the spindle arrangement 13 connected with the displaceable bearing housing 11.
  • the roller 1 comes with the displaceable bearing housing 11, coupling 15, gear 16 and motor 17, and disassembly of any parts is thus not required.
  • a subsequent radial displacement of the first slide 6 relative to the second slide 12 may then be performed whereby free access to the roller 1 is provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Rotary Presses (AREA)

Abstract

L’invention se rapporte à un procédé de démontage ainsi que de montage d’un manchon remplaçable sur un rouleau rotatif et à déplacement radial (1) pour une unité d’impression d’une machine à imprimer. L’invention se rapporte en outre à une telle machine à imprimer comportant au moins une unité d’impression. Le rouleau est équipé, à ses extrémités, de paliers (4, 9) placés dans deux coulisseaux à déplacement radial (6, 12) sur la machine à imprimer, le rouleau pouvant être dégagé de la machine à imprimer par une extrémité du rouleau. Les nouvelles caractéristiques du procédé et de l’unité d’impression selon l’invention sont les suivantes : le rouleau est équipé de moyens de déplacement grâce auxquels il se déplace dans sa direction longitudinale avant le démontage d’un manchon, le rouleau étant dégagé du coulisseau fixe et à déplacement radial, après quoi le coulisseau et le rouleau peuvent ainsi se déplacer radialement l’un par rapport à l’autre, et ensuite le manchon est dégagé et démonté par le retrait du rouleau dans sa direction longitudinale.
PCT/DK2009/050121 2008-05-28 2009-05-28 Rouleau à déplacement axial dans une unité d’impression WO2009143854A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA200800731 2008-05-28
DK200800731A DK200800731A (da) 2008-05-28 2008-05-28 Udskiftning af kappe på valse i et trykværk

Publications (1)

Publication Number Publication Date
WO2009143854A1 true WO2009143854A1 (fr) 2009-12-03

Family

ID=41055253

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2009/050121 WO2009143854A1 (fr) 2008-05-28 2009-05-28 Rouleau à déplacement axial dans une unité d’impression

Country Status (2)

Country Link
DK (1) DK200800731A (fr)
WO (1) WO2009143854A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110053357A (zh) * 2019-05-26 2019-07-26 上海瑞源印刷设备有限公司 一种网纹辊安装结构
CN113414152A (zh) * 2021-06-28 2021-09-21 欣旺达电动汽车电池有限公司 除尘装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5601021A (en) * 1995-02-17 1997-02-11 Toshiba Kikai Kabushiki Kaisha Printing cylinder holding apparatus for printing machine
EP0955161A2 (fr) * 1998-05-05 1999-11-10 UTECO S.p.A. ROTO-FLEXO & CONVERTING MACHINERY Machine rotative d'impression flexographique polychrome avec un tambour principal et des unités d'impression des couleurs separées indépendantes
EP1080890A1 (fr) * 1999-08-20 2001-03-07 Paper Converting Machine Company Procédé et dispositif pour remplacer un cylindre ou un manchon dans une machine à imprimer
WO2005018936A1 (fr) * 2003-08-25 2005-03-03 Officine Curioni S.P.A. Machine a imprimer equipee d'un cylindre d'impression extensible permettant le changement facile du manchon d'impression
EP1745929A1 (fr) * 2005-07-21 2007-01-24 Fischer & Krecke GmbH & Co. KG Machine d'impression
DE102007017097A1 (de) * 2006-09-15 2008-03-27 Sdf Schnitt-Druck-Falz Spezialmaschinen Gmbh Druckzylinder-Wechselsystem für drucklängenveränderbare Druckwerke in einer Vollrotations-Druckmaschine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5601021A (en) * 1995-02-17 1997-02-11 Toshiba Kikai Kabushiki Kaisha Printing cylinder holding apparatus for printing machine
EP0955161A2 (fr) * 1998-05-05 1999-11-10 UTECO S.p.A. ROTO-FLEXO & CONVERTING MACHINERY Machine rotative d'impression flexographique polychrome avec un tambour principal et des unités d'impression des couleurs separées indépendantes
EP1080890A1 (fr) * 1999-08-20 2001-03-07 Paper Converting Machine Company Procédé et dispositif pour remplacer un cylindre ou un manchon dans une machine à imprimer
WO2005018936A1 (fr) * 2003-08-25 2005-03-03 Officine Curioni S.P.A. Machine a imprimer equipee d'un cylindre d'impression extensible permettant le changement facile du manchon d'impression
EP1745929A1 (fr) * 2005-07-21 2007-01-24 Fischer & Krecke GmbH & Co. KG Machine d'impression
DE102007017097A1 (de) * 2006-09-15 2008-03-27 Sdf Schnitt-Druck-Falz Spezialmaschinen Gmbh Druckzylinder-Wechselsystem für drucklängenveränderbare Druckwerke in einer Vollrotations-Druckmaschine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110053357A (zh) * 2019-05-26 2019-07-26 上海瑞源印刷设备有限公司 一种网纹辊安装结构
CN110053357B (zh) * 2019-05-26 2024-04-30 上海瑞源印刷设备有限公司 一种网纹辊安装结构
CN113414152A (zh) * 2021-06-28 2021-09-21 欣旺达电动汽车电池有限公司 除尘装置
CN113414152B (zh) * 2021-06-28 2024-04-30 欣旺达动力科技股份有限公司 除尘装置

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Publication number Publication date
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