EP0803355B1 - Cylindre de transfert - Google Patents

Cylindre de transfert Download PDF

Info

Publication number
EP0803355B1
EP0803355B1 EP97105982A EP97105982A EP0803355B1 EP 0803355 B1 EP0803355 B1 EP 0803355B1 EP 97105982 A EP97105982 A EP 97105982A EP 97105982 A EP97105982 A EP 97105982A EP 0803355 B1 EP0803355 B1 EP 0803355B1
Authority
EP
European Patent Office
Prior art keywords
transfer cylinder
channel
leading
recess
leading edge
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 - Lifetime
Application number
EP97105982A
Other languages
German (de)
English (en)
Other versions
EP0803355A1 (fr
Inventor
Günter Koppelkamm
Gerhard Zuber
Jochen Vogel
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.)
Manroland AG
Original Assignee
MAN Roland 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 MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0803355A1 publication Critical patent/EP0803355A1/fr
Application granted granted Critical
Publication of EP0803355B1 publication Critical patent/EP0803355B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B41F13/08—Cylinders
    • B41F13/085—Cylinders with means for preventing or damping vibrations or shocks
    • 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

Definitions

  • the invention relates to a transfer cylinder according to the preamble of Claim 1.
  • DE 31 25 300 C2 describes a transfer cylinder for a web-fed rotary printing press known, which is equipped with a printing blanket, the ends that can be inserted into an axis-parallel channel are held in this channel, and an elastically deformable peripheral region on the in the direction of rotation of the transfer cylinder leading edge of the channel.
  • both ends of the printing blanket are stretched approximately radially in the channel be used to prevent deformation of the elastically deformable Circumferential area by the clamping force acting on the leading end this peripheral area on the channel side through a leading edge forming rigid support element stiffened.
  • the invention has for its object a transfer cylinder to create according to the preamble of claim 1, the one hand effective reduction and on the other hand an effective damping of the occurring Channel joints allowed.
  • the chamfer in the area of the leading edge of the channel is compensated ensuring a full printout on the substrate up to this edge, above all, one that forms on the latter during operation Bead of the printing blanket so that the impact load is reduced. So that is also a lower load on the leading end of the blanket connected, thereby dispensing with its separate clamping in the channel can be, so that the elastically deformable area of the transfer cylinder in the area of the leading edge as Spring damping element to absorb the remaining channel joints and thus to avoid cylinder vibrations excitable by the latter is usable, the damping effect by the additional Introduction of a vibration-damping material - for example a casting elastomer that cures at room temperature with a Shore Hardness A 80 - 98 - is effectively reinforced in the recess.
  • a vibration-damping material for example a casting elastomer that cures at room temperature with a Shore Hardness A 80 - 98 - is effectively reinforced in the recess.
  • the associated drawing shows a schematic representation of a transfer cylinder with a leading one not fixed in the channel End of a printing blanket and a trailing one tensioned by means of a tensioning shaft The End.
  • a printing blanket 2 is arranged on the circumference of a transfer cylinder 1, whose both ends 3; 4 can be inserted in an axially parallel channel 5 are held, which is in the direction of rotation of the transfer cylinder 1 leading end 3 only by means of a side extension 6 in a Recess 7 of the leading channel surface 8 hooked in and the trailing one End 4 both held and radial by means of a tension shaft 9 is excited.
  • Printing unit cylinder in the form of an impression cylinder or forme cylinder is the leading edge 10 of channel 5 with a chamfer 11 and the trailing Edge 12 with a mirror image of the starting chamfer 11 of the same type executed run phase 13 equipped.
  • the start chamfer 11 and the drain chamfer 13 are flats on the circumference of the transfer cylinder designed at the leading or trailing edge 10 or 12 each at the greatest distance to the circular Radial contour 14 of the transfer cylinder 1 is reset radially starting with a constant reduction of this distance in the circumferential direction end after a few millimeters on the circumference. So that is on both Edges 10; 12 ensuring a full printout on the Printing material up to these edges is attached to the latter during operation forming bead of the blanket 2 in the sense of a reduction the shock load compensated.
  • the transfer cylinder 1 has 10 at the leading edge of the channel 5 an elastically deformable peripheral region B by a slot-shaped recess 15 with respect to the circumference radially inwards displaces the greatest elastic deformability at the leading channel surface 8 effective and begins to grow in the circumferential direction Distance extends to the circumference.
  • the shock absorption is further reduced by filling in the recess 15 reinforced with a particularly vibration-damping material.
  • a casting elastomer 16 pourable into the recess 15 is which then at room temperature up to a Shore hardness of A 80 to 98 cures, suitable.
  • Tension shaft 9 is mounted in a bore 17 which widens the channel 5 inside
  • Tension shaft 9 has a radial slot 18 on the circumference, in which the trailing end 4 of after hooking the leading end 3 in the recess 7 with a twist of the transfer cylinder 1 the scope of the printed blanket 2 with the corresponding position of the Clamping shaft 9 can be inserted through the channel opening 19. Then will the trailing end 4 by rotating the tension shaft 9 in the the drawing shown position excited and thus the flexible printing blanket 2 for complete installation with the circumference of the transfer cylinder 1 brought.
  • the tension shaft 9 is on its circumference with several in the circumferential direction offset flats 20 to 23 equipped with the appropriate Position of the tension shaft 9, the different functional sequences for the separate insertion of the ends 3; 4 in and securing, fixing or ensure clamping in and removal from channel 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Printing Plates And Materials Therefor (AREA)

Claims (6)

  1. Cylindre de transfert pour une rotative à bobines qui est équipé d'un blanchet (2) dont les extrémités (3, 4) pouvant être insérées dans un canal parallèle à l'axe sont maintenues dans ce dernier sous l'effet d'un serrage de l'extrémité en aval (4) dans le sens de rotation, et qui dispose d'une zone périphérique (B) déformable élastiquement sur le bord amont (10) du canal, caractérisé en ce que la déformabilité élastique de la zone périphérique (B) qui croít constamment dans le sens périphérique est maximale sur le bord amont (10), en ce que l'extrémité en amont (3) du blanchet (2) peut être fixée dans le canal (5) tout en ne pouvant pas être serrée et en ce que du côté périphérique, sur le bord amont (10) est disposé un chanfrein d'entrée (11) qui, en croissant constamment dans le sens périphérique sur le bord amont (10), est reculé à une distance radiale maximale par rapport au contour périphérique (14) circulaire du cylindre de transfert (1).
  2. Cylindre de transfert selon la revendication 1, caractérisé en ce que le cylindre de transfert (1) est muni d'un évidement (15) commençant sur la surface amont (8) du canal à une distance radiale par rapport au pourtour et passant dans le sens périphérique à une distance radiale croissant constamment par rapport au pourtour.
  3. Cylindre de transfert selon la revendication 2, caractérisé en ce que l'évidement (15) est rempli d'une matière amortissant les vibrations.
  4. Cylindre de transfert selon la revendication 3, caractérisé en ce que la matière est un élastomère de coulage (16) durcissant à température ambiante avec une dureté shore A 80 à 98.
  5. Cylindre de transfert selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le bord aval (12) du canal (5) est muni d'un chanfrein de sortie (13) qui est analogue au chanfrein d'entrée (11) du bord amont (10), qui est symétrique dans le sens périphérique opposé et reculé sur le bord aval (12) à une distance radiale maximale par rapport au contour périphérique (14) circulaire.
  6. Cylindre de transfert selon l'une quelconque des revendications 1 à 5, caractérisé en ce que l'extrémité en amont (3) du blanchet (2) peut être accrochée, au moyen d'un appendice (6) latéral, dans un évidement (7) de la surface amont (8) du canal servant d'appui et en ce que l'extrémité en aval (4) du blanchet (2) peut être serrée, au moyen d'un arbre de serrage (9) disposé dans un alésage (17) du canal (5) et muni d'une fente (18) logeant l'extrémité en aval (4), dans l'évidement (7) sous une partie restante de l'appendice (6) de l'extrémité en amont (3).
EP97105982A 1996-04-24 1997-04-11 Cylindre de transfert Expired - Lifetime EP0803355B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19616338 1996-04-24
DE19616338A DE19616338A1 (de) 1996-04-24 1996-04-24 Übertragungszylinder

Publications (2)

Publication Number Publication Date
EP0803355A1 EP0803355A1 (fr) 1997-10-29
EP0803355B1 true EP0803355B1 (fr) 1999-11-10

Family

ID=7792289

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97105982A Expired - Lifetime EP0803355B1 (fr) 1996-04-24 1997-04-11 Cylindre de transfert

Country Status (2)

Country Link
EP (1) EP0803355B1 (fr)
DE (2) DE19616338A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006044979A1 (de) * 2006-09-23 2008-04-10 Man Roland Druckmaschinen Ag Druckwerk einer Druckmaschine
DE102006058667B3 (de) * 2006-12-13 2008-02-07 Koenig & Bauer Aktiengesellschaft Druckzylinder für Rollenoffsetdruckmaschine
DE102007006042B3 (de) * 2007-02-07 2008-09-18 Koenig & Bauer Aktiengesellschaft Verfahren zum Spannen eines Aufzugs und eine Spannvorrichtung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3589285A (en) * 1970-01-20 1971-06-29 Harris Intertype Corp Cylinder with yieldable periphery
DE2613687B2 (de) * 1976-03-31 1979-05-31 Maschinenfabrik Augsburg-Nuernberg Ag, 8900 Augsburg Gununituchzylinder einer Rollen-Rotations-Offsetdruckmaschine mit einer Abflachung am Spannkanal
DE2613688C2 (de) * 1976-03-31 1983-05-26 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg Gummituchzylinder für eine Bogen-Rotationsoffsetdruckmaschine
DD204886A1 (de) * 1982-05-05 1983-12-14 Victor Hefftler Rotationsdruckmaschine
SE455848B (sv) * 1983-01-21 1988-08-15 Wifag Maschf Gummidukcylinder for valsrotationstryckmaskiner
US4635550A (en) * 1985-03-11 1987-01-13 American Roller Company Gap filler blanket for printing cylinder

Also Published As

Publication number Publication date
EP0803355A1 (fr) 1997-10-29
DE19616338A1 (de) 1997-10-30
DE59700676D1 (de) 1999-12-16

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