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EP1745929B1 - Machine d'impression - Google Patents

Machine d'impression Download PDF

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Publication number
EP1745929B1
EP1745929B1 EP20050015861 EP05015861A EP1745929B1 EP 1745929 B1 EP1745929 B1 EP 1745929B1 EP 20050015861 EP20050015861 EP 20050015861 EP 05015861 A EP05015861 A EP 05015861A EP 1745929 B1 EP1745929 B1 EP 1745929B1
Authority
EP
European Patent Office
Prior art keywords
mandrel
cylinder sleeve
printing machine
bearing
machine according
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.)
Expired - Fee Related
Application number
EP20050015861
Other languages
German (de)
English (en)
Other versions
EP1745929A1 (fr
Inventor
Wolfgang Brusdeilins
Bodo Steinmeier
Andreas Kückelmann
Gordon Whitelaw
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.)
Fischer and Krecke GmbH and Co KG
Original Assignee
Fischer and Krecke GmbH and Co 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 Fischer and Krecke GmbH and Co KG filed Critical Fischer and Krecke GmbH and Co KG
Priority to DE200550010760 priority Critical patent/DE502005010760D1/de
Priority to EP20050015861 priority patent/EP1745929B1/fr
Publication of EP1745929A1 publication Critical patent/EP1745929A1/fr
Application granted granted Critical
Publication of EP1745929B1 publication Critical patent/EP1745929B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • 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
    • B41F30/04—Devices for attaching coverings or make-ready devices; Guiding devices for coverings attaching to transfer cylinders
    • 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
    • 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 invention relates to a printing machine with a rotatably mounted in a frame mandrel, a cylinder sleeve and a clamping device for releasably clamping the cylinder sleeve on the mandrel.
  • the cylinder sleeve for example, the sleeve of a printing plate cylinder
  • a mandrel which passes coaxially through the cylinder sleeve and is rotatably mounted with both ends in the machine frame.
  • clamping devices for clamping the cylinder sleeve on the mandrel can serve, for example, two hydraulic bushings, as in US 3,378,902 to be discribed.
  • the object of the invention is to provide a printing machine, which has a simplified structure and therefore can be produced more cost-effectively and in which nevertheless a simple change of the cylinder sleeve and a precise storage of this cylinder sleeve is possible.
  • the cylinder sleeve If the cylinder sleeve is to be replaced, needs to be solved in the printing cylinder sleeve according to the invention, only the single clamping device and to be removed at the other end, the detachable bearing. The cylinder sleeve is then temporarily held cantilevered with the aid of the single tensioning device on the mandrel until it is withdrawn axially from the mandrel. In this way, the process of cylinder change is simplified.
  • a particularly compact construction is achieved according to a development in that the removable, frame-fixed bearing is formed by a bearing mandrel which engages in the end of the cylinder sleeve.
  • the radially outer bearing shell of this bearing is then formed by an insert which is fixedly mounted in the end of the cylinder sleeve.
  • the mandrel is extended by a guide tube, which almost comes close to the frame-fixed bearing.
  • the insert in the cylinder sleeve can then be designed so that it slides on pushing the cylinder sleeve onto the mandrel on the end of the guide tube and so causes a centering of this end, so that the bearing mandrel can then introduce easily.
  • the tensioning device is preferably formed by a hydraulic bush, which works with a liquid or a paste as a hydraulic medium.
  • the clamping and releasing the clamping device can be done by the hydraulic medium is pressurized or relieved of pressure.
  • the mandrel and the clamping device are located on the drive side of the machine frame, ie, on the side on which the rotary drive for the mandrel and possibly an adjustment mechanism for adjusting the side register is located.
  • the removal and pushing the cylinder sleeve can then be done from the opposite side, the operating side, the machine frame forth.
  • the driving force of the side register adjusting mechanism is used to pressurize or relieve pressure of the hydraulic medium.
  • the mandrel and the cylinder sleeve can be adjusted by means of this adjusting mechanism as a unit in the axial direction within a limited working range so that the side register of the cylinder sleeve can be precisely adjusted.
  • the tensioner is to be released, the side register is moved beyond the normal working range and against a stop. The further movement of the side register can then be used to relieve pressure on the hydraulic medium, which is kept under pressure, for example by means of an energy accumulator. If after retraction of the new cylinder sleeve, the adjustment mechanism for the side register is returned to the normal working range, the energy storage is released again, so that the hydraulic medium is pressurized again and thus the tensioning device is tensioned.
  • the pressurization of the hydraulic medium takes place by means of a coaxially through the cylinder sleeve and possibly the guide tube extending actuating rod, which is in threaded engagement with a connected to the piston of the hydraulic system part, so that by rotation of the control rod relative to the mandrel axial movement of the piston and thus a pressurization of the hydraulic system can be effected.
  • the rotation of the control rod relative to the mandrel can be done in one embodiment by means of the rotary drive for the mandrel.
  • one end of the control rod and the bearing mandrel form a releasable plug-in coupling, by which, when the bearing mandrel is in position, the control rod is rotatably held with respect to the machine frame.
  • the mandrel With the help of the rotary drive for the mandrel then the mandrel can be rotated relative to the control rod.
  • the rotation of the control rod relative to the mandrel by hand for example by means of a tool such as one Compressed air screwdriver or the like.
  • a tool such as one Compressed air screwdriver or the like.
  • the clamping device is only actuated when the free end of the cylinder sleeve is already mounted on the bearing mandrel. This can be enforced by the fact that the provided at the end of the control rod engagement member for the tool is designed so that it can not be operated directly by the tool, but only via a rotatably received in the bearing mandrel adapter, which in turn operated by means of the compressed air screwdriver can be.
  • FIG. 1 shows a printing cylinder 10 of a printing machine, such as a flexographic printing machine, which is rotatably mounted in a machine frame with a drive-side frame member 12 and a user-side frame member 14.
  • the printing cylinder has a cylinder sleeve 16 made of carbon fiber reinforced plastic (CFRP), which is detachably attached to a mandrel 18.
  • CFRP carbon fiber reinforced plastic
  • the mandrel 18 has a bearing portion 20 which is mounted axially adjustable in the drive-side frame member 12 by means of a radial bearing 22.
  • bearing portion 20 is not shown Axial bearing mounted in an adjusting mechanism 24 which is displaceable by means of a drive, not shown, in the axial direction of the printing cylinder with respect to the frame member 12 and serves to adjust the side register of the printing cylinder 10.
  • the located outside of Verstellmechmechanismus 24 end of the bearing portion 20 is connected via a length compensation clutch 26 and a drive shaft 28 with a rotary drive for the printing cylinder, not shown.
  • the mandrel 18 engages with a cylindrical, designed as a hydraulic bush 30 section into the local end of the cylinder sleeve 16 a.
  • a sleeve 32 is used, which allows the interior of the cylinder sleeve to supply via a conduit system 34 with compressed air.
  • the compressed air can escape via radial bores 36 from the cylinder sleeve 16 and serves to form a friction-reducing air cushion when pushing a sleeve, not shown, on the cylinder sleeve 16.
  • the hydraulic sleeve 30 abuts with its outer peripheral wall on the inner surface of the sleeve 32 and includes a hydraulic system 38, with which the peripheral wall of the hydraulic jack can be expanded so that the drive end of the cylinder sleeve 16 fixed to the hydraulic sleeve 30 and thus on the mandrel 18th is strained.
  • the hydraulic sleeve 30 projects only a relatively short distance into the cylinder sleeve 16 but is elongated at the inner end by a smaller diameter guide tube 40 which extends freely to approximately the opposite end of the cylinder sleeve 16 through the interior of this sleeve and at its end engages in a tubular insert 42 which is fixed in the operation-side end portion of the cylinder sleeve 16.
  • This insert 42 also forms the outer ring of a radial bearing 44, with which this end of the cylinder sleeve 16 is mounted directly on the drive-side frame member 14.
  • the inner ring of this bearing is formed by a bearing mandrel 46, which is removably attached to the frame member 14 and projects into the end of the cylinder sleeve 16 and in the insert 42.
  • the storage of the printing cylinder 10 in the machine frame thus takes place on the drive side via the mandrel 18, on which the cylinder sleeve 16 is clamped by means of the hydraulic sleeve 30, while on the operating side, the cylinder sleeve 16 is mounted without participation of the mandrel 18 directly on the frame-fixed bearing mandrel 46.
  • the bearing mandrel 46 When the cylinder sleeve 16 is to be replaced, first the bearing mandrel 46 is removed, as in FIG. 2 is shown.
  • the bearing mandrel 46 may for example be mounted on the frame member 14 so that it can be moved back axially by means of a motor drive and so pulled out of the cylinder sleeve 16 and then can swing in the manner of a folding bearing to the side. In this way, an opening 48 is released in the frame member 14, through which the operator access to the end of the cylinder sleeve 16 has.
  • the cylinder sleeve is then held in a cantilever-like manner by the hydraulic bush 30 which is seated only at one end. It proves to be advantageous that the cylinder sleeve 16 is made of relatively lightweight carbon fiber material.
  • FIG. 1 shows accordingly the state in which the pistons of the piston / cylinder units 50 are retracted into the associated cylinder.
  • a stopper plate 54 which extends outwardly beyond the outer periphery of this bearing portion and engages the inner edge of the piston of the piston / cylinder units 50.
  • the new cylinder sleeve 16 is then pushed onto the mandrel 18 and clamped on one side.
  • the chamfered lug 46 slides on the end of the guide tube 40, so that the cylinder sleeve 16 is centered and aligned axially with respect to the mandrel 18.
  • the hydraulic system 38 is put back under pressure and thus the cylinder sleeve 16 is tightened so that it is fixed like a cantilever only at its drive end to the mandrel 18.
  • the bearing mandrel 46 is returned to position and thus completes the storage for the printing cylinder 10.
  • FIG. 3 shows a modified embodiment in which the actuation of the hydraulic bushing 30 is not the side register drive but instead the rotary drive is used, which normally serves to drive the pressure cylinder 10 via the drive shaft 28.
  • a centrally located piston / cylinder unit 50 is provided, the piston 56 is in threaded engagement with an axially extending through the guide tube 40 control rod 58.
  • the piston 56 is rotationally fixed with respect to the hydraulic sleeve 30 so that it can be displaced axially and thus build up pressure in the hydraulic system when the control rod 58 is rotated relative to the hydraulic sleeve 30.
  • the opposite end of the control rod 58 has a spring-loaded plug-in coupling 60.
  • the bearing mandrel 46 forms a plug-in coupling 60 complementary plug-in receptacle 62 and is rotationally fixed but axially adjustable mounted in a frame-fixed holder 64.
  • the bearing mandrel 46 When the hydraulic bushing 30 is to be released, the bearing mandrel 46 is retracted deeper, in the in FIG. 3 dot-dash line position, so that it pushes back the plug-in coupling 60. Subsequently, the unit of mandrel 18, cylinder sleeve 16 and control rod 58 is slowly rotated by means of the rotary drive until the plug-in coupling 60 engages in the plug-in receptacle 62. The control rod 58 is then locked against rotation on the frame member 14, so that upon further rotation of the mandrel, the piston 56 deeper into the control rod 58 is screwed and thus extends out of the associated cylinder, so that the hydraulic system 38 is depressurized. Subsequently, as in the embodiment described above, the bearing mandrel 46 is removed and the cylinder sleeve 16 replaced.
  • the clamping of the hydraulic bush 30 is also carried out with the aid of the rotary drive, while the bearing mandrel 46 is located in the dot-dash line position and with the plug-in coupling 60 is engaged.
  • the piston 56 is actively retracted into the cylinder, so that the pressure can be built without a power storage is needed.
  • the bearing mandrel 46 is then withdrawn into the position shown in solid lines, so that the control rod 58 can rotate together with the mandrel 18 relative to the machine frame.
  • the plug-in receptacle 62 may also be formed in a plunger, which is axially displaceable in the bearing mandrel 46 and pneumatically actuated, for example, so that one need not move the bearing mandrel 46 as a whole. In the case, the plug-in coupling 60 does not need to be spring-loaded.
  • FIG. 4 shows a variant in which the actuation of the hydraulic bush 30 is carried out manually or, for example, with the aid of a compressed air-driven screwing tool.
  • the bearing mandrel 46 here receives a spring-loaded, axially movable and rotatable intermediate member 66, on which the plug-in receptacle 62 is formed.
  • the outer end of this intermediate member 66 forms a plug-in receptacle 68 for the screwing tool, not shown.
  • the intermediate member 66 and the control rod 58 can be rotated, and thus the hydraulic system can be relieved of pressure. Subsequently, the bearing mandrel 46 is removed, so that the cylinder sleeve can be replaced. Before the hydraulic system with the help of the intermediate member 66 can be re-pressurized, the bearing mandrel 46 must be reintroduced into the end of the cylinder sleeve 16. This ensures that the hydraulic sleeve 30 can only be tensioned when the free end of the cylinder sleeve 16 again is mounted on the bearing mandrel 46. In this way, the risk of incorrect clamping of the cylinder sleeve 16 is avoided.

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  • Rotary Presses (AREA)

Claims (11)

  1. Machine d'impression comportant un mandrin (18) supporté dans un bâti (12, 14) de manière rotative, un manchon cylindrique (16) et un dispositif de serrage (30) pour serrer le manchon cylindrique (16) sur le mandrin (18) de manière amovible, caractérisée en ce que le dispositif de serrage (30) n'est agencé que sur l'une des deux extrémités du manchon cylindrique (16), et en ce que l'autre extrémité du manchon cylindrique est directement supportée dans le bâti (12, 14) à l'aide d'un palier démontable (46).
  2. Machine d'impression selon la revendication 1, caractérisée en ce que le palier démontable est formé par un mandrin de palier (46) qui est maintenu sur un élément de bâti (14) de manière amovible et qui est en prise dans l'extrémité du manchon cylindrique (16).
  3. Machine d'impression selon la revendication 2, caractérisée en ce qu'une pièce d'insertion (42) est agencée dans le manchon cylindrique (16), laquelle pièce d'insertion est en prise avec le mandrin de palier (46) et forme la bague extérieure du palier.
  4. Machine d'impression selon la revendication 3, caractérisée en ce que le mandrin (18) comporte un tube de guidage (40) qui s'étend librement dans une direction axiale à travers l'intérieur du manchon de palier (16) et qui est en prise dans la pièce d'insertion (42) lorsque le manchon cylindrique (16) est poussé sur le mandrin (18).
  5. Machine d'impression selon l'une quelconque des revendications précédentes, caractérisée en ce que le manchon cylindrique (16) est majoritairement constitué d'une matière plastique renforcée par des fibres de carbone.
  6. Machine d'impression selon l'une quelconque des revendications précédentes, caractérisée en ce que le dispositif de serrage est une bague hydraulique (30).
  7. Machine d'impression selon l'une quelconque des revendications précédentes, caractérisée en ce que le mandrin (18) est axialement réglable par rapport au bâti (12, 14) à l'aide d'un mécanisme de réglage (24) qui sert à régler le registre latéral, et en ce que le dispositif de serrage (30) peut être actionné par un mécanisme (50, 52, 54) qui utilise le mouvement relatif produit par le mécanisme de réglage (24) entre le mandrin (18) et un élément de bâti (12) comme source d'entraînement.
  8. Machine d'impression selon l'une quelconque des revendications 1 à 6, caractérisée en ce qu'un mécanisme pour actionner le dispositif de serrage (30) comporte une tige de réglage (58) qui s'étend axialement à travers l'intérieur du manchon cylindrique (16) et qui peut tourner par rapport au mandrin (18).
  9. Machine d'impression selon la revendication 8, caractérisée en ce que la tige de réglage (58) peut être bloquée en rotation sur le palier démontable (46) et le mandrin (18) peut être entraîné en rotation à l'aide d'un arbre d'entraînement (28) et être ainsi tourner par rapport à la tige de réglage (58).
  10. Machine d'impression selon la revendication 8, caractérisée en ce que la tige de réglage (58) comporte, sur son extrémité opposée au dispositif de serrage (30), un accouplement enfichable (60) au moyen duquel elle peut tourner par rapport au mandrin (18).
  11. Machine d'impression selon les revendications 2 et 10, caractérisée en ce que le mandrin de palier (46) reçoit un organe intermédiaire rotatif (66) qui peut être mis en prise avec l'accouplement enfichable (60) sur une extrémité et qui comporte sur l'autre extrémité un logement d'enfichage (68) pour un outil rotatif.
EP20050015861 2005-07-21 2005-07-21 Machine d'impression Expired - Fee Related EP1745929B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE200550010760 DE502005010760D1 (de) 2005-07-21 2005-07-21 Druckmaschine
EP20050015861 EP1745929B1 (fr) 2005-07-21 2005-07-21 Machine d'impression

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20050015861 EP1745929B1 (fr) 2005-07-21 2005-07-21 Machine d'impression

Publications (2)

Publication Number Publication Date
EP1745929A1 EP1745929A1 (fr) 2007-01-24
EP1745929B1 true EP1745929B1 (fr) 2010-12-29

Family

ID=35463735

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20050015861 Expired - Fee Related EP1745929B1 (fr) 2005-07-21 2005-07-21 Machine d'impression

Country Status (2)

Country Link
EP (1) EP1745929B1 (fr)
DE (1) DE502005010760D1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK200800731A (da) * 2008-05-28 2009-11-29 Tresu As Udskiftning af kappe på valse i et trykværk
DE102008040328B4 (de) * 2008-07-10 2011-02-24 Windmöller & Hölscher Kg Farbwerk einer Druckmaschine und Verfahren zum Aufschieben einer Zylinderhülse
DE102012206972B4 (de) * 2012-04-26 2019-03-14 Spm Steuer Gmbh & Co. Kg Werkzeugzylinder mit auswechselbarer Werkzeughülse sowie Präge- oder Druckmaschine mit einem solchen Werkzeugzylinder sowie Werkzeugzylinder-Set
DE202016102779U1 (de) * 2016-05-25 2017-08-28 Bobst Bielefeld Gmbh Vorrichtung zur Betätigung einer hydraulischen Trägerstange einer Rotationsdruckmaschine
WO2020193680A1 (fr) * 2019-03-26 2020-10-01 Windmöller & Hölscher Kg Dispositif et procédé pour remplacer des manchons sur des mandrins ou des manchons d'adaptation
US12097693B2 (en) 2019-05-23 2024-09-24 Bobst Bielefeld Gmbh Clamping shaft, printing cylinder unit and method for operating a clamping shaft
CN114347634B (zh) * 2021-12-20 2024-05-14 西安航天华阳机电装备有限公司 一种印刷机版辊充气结构

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3378902A (en) 1966-07-05 1968-04-23 Mosstype Corp Hydraulically actuated demountable printing cylinders
DE19848184C2 (de) * 1998-10-20 2002-02-28 Roland Man Druckmasch Zylinder einer Rotationsdruckmaschine
DE20012929U1 (de) * 2000-07-25 2000-11-23 Polywest Kunststofftechnik Saueressig & Partner GmbH & Co. KG, 48683 Ahaus Adapterhülse, insbesondere für Druckmaschinen

Also Published As

Publication number Publication date
EP1745929A1 (fr) 2007-01-24
DE502005010760D1 (de) 2011-02-10

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