EP0761435B1 - Dispositif pour enrouler un support d'image flexible autour un cylindre de forme - Google Patents

Dispositif pour enrouler un support d'image flexible autour un cylindre de forme Download PDF

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Publication number
EP0761435B1
EP0761435B1 EP95116776A EP95116776A EP0761435B1 EP 0761435 B1 EP0761435 B1 EP 0761435B1 EP 95116776 A EP95116776 A EP 95116776A EP 95116776 A EP95116776 A EP 95116776A EP 0761435 B1 EP0761435 B1 EP 0761435B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
image carrier
winding
plate cylinder
printing image
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
EP95116776A
Other languages
German (de)
English (en)
Other versions
EP0761435A1 (fr
Inventor
Gotthard Schmid
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
Priority claimed from DE19536884A external-priority patent/DE19536884C1/de
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0761435A1 publication Critical patent/EP0761435A1/fr
Application granted granted Critical
Publication of EP0761435B1 publication Critical patent/EP0761435B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1218—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices
    • B41F27/125—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end on a curvilinear path, e.g. by winding on a roll
    • 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
    • B41F30/06—Devices for attaching coverings or make-ready devices; Guiding devices for coverings attaching of endless or like continuously-fed coverings

Definitions

  • the invention relates to a device for Wrapping a printing form cylinder with a flexible Print image carrier, one inside the printing form cylinder first winding spool for handling a print image carrier, the can be drawn onto the outer surface of the printing form cylinder and a second winding spool for winding the on
  • the lateral surface of the printed image carrier is provided and a single one on the printing form cylinder in its lateral surface Opening to a pit is formed in its interior which arranged the first and the second winding spool together and from which the printed image carrier from the first Winding spool on the outer surface and from this to the second winding spool is windable.
  • US 4,231,652 for example a drum for a copier known, inside two spools - a supply spool and a take-up spool - are included, which is a web-shaped semiconductor material transport.
  • the drum including the one stored in it Winding spools can be removed from the storage in that the The opposite ends of the drum with the lever End holes of the drum can be pulled out and into this retractable pins are positively connected.
  • the pivot can be moved axially by means of the pivotable levers become; after the tenon the front holes released, the drum is on the side walls attached support pin.
  • DE 43 03 872 A1 shows a printing device with a Forme cylinder and a process for preparing the print Forme cylinder.
  • the forme cylinder is divided into two segments, the are positively connected.
  • the winding coils that the Record the print carrier, housed in the upper segment.
  • a withdrawal of the winding receiving segment in the machine appears cumbersome in view of the size of the component and difficult to do; a removal of the Winding spools through the end faces makes disassembly of the Forme cylinders from the machine required.
  • the advantage of the solution according to the invention is that that while performing maintenance on the Printing form cylinder when installed in the machine can remain.
  • the rewinding mechanism including the winding shafts is in a simple manner through the circumferential opening in the Removable outer surface. After removing them, the Supporting part supporting winding shafts in a simple manner be removed from the inside of the cylinder, making the entire Interior of the cylinder through the peripheral opening for Maintenance work becomes freely accessible. This will make one Dismantling of the printing form cylinder is unnecessary. Through this Circumstance will continue to be the risk of damage or Adjustment of the close to the printing form cylinder surface employed imaging units drastically reduced. At disassembly and subsequent assembly of the Printing form cylinders, however, would be a realignment of the Imaging units are essential. This necessary, however unwanted downtime can now also be eliminated.
  • the storage part in the area is one of the thoughts End faces of the printing form cylinder arranged.
  • the Storage part are the first and the second winding spool Rewinding mechanism for the print image carrier inside the Printing form cylinder supported by the bearing part.
  • the Bearing part can be attached to one of the cylinder front parts be, the winding spools one ice in the storage part and on the other hand in this opposite cylinder front part be included.
  • the storage part like that for receiving the cylinder front part serving the winding coil are with openings to accommodate the winding spools. To improve the Dimensional accuracy for surface finishes are in the Integrated cylinder end parts of the printing form cylinder Bearings provided, the treads next to the Extend the outer surface of the printing form cylinder.
  • the invention is based on a drawing below explained in detail.
  • the winding coils 5 and 6 includes inside the printing form cylinder 1 .
  • the winding coils 5 and 6 includes inside the printing form cylinder 1 .
  • the winding coils 5 and 6 one of which a stock of the print image carrier 3 receives while the others for receiving the unwound from the lateral surface 9, So used print image carrier section is used
  • Print image carrier 3 each also print job on the Shell surface 9 of the printing form cylinder 1 transported to this to be directly illustrated.
  • the imaging units are not in themselves the subject of the present invention; she should only be mentioned to the extent that they are correct to the Surface of the printing form cylinder 1 are to be adjusted to a correct illustration of the respective on the lateral surface 9 to ensure located print image carrier 3.
  • the correct setting of the imaging units to the Surface of the print image carrier 3 applies to the Carrying out maintenance work on the printing form cylinder 1 to keep as possible.
  • a storage part 30 takes the print carrier advance serving winding coils 5 and 6. To avoid Damage to the print image carrier 3 and maintenance its uniform tension is the print image carrier 3 over Roundings 7, 8, which the channel opening 2 in the Limited surface area 9, guided.
  • Fig. 2 shows a printing plate cylinder in a conventional Construction with outside the cylinder arranged, removable in the axial direction Spindle holders.
  • a helical gear 10 for driving the Printing form cylinder.
  • spindle shafts 14 When assembled are in the first Spindle holder 11 spindle shafts 14 added.
  • the spindle shafts 14 each take Compression springs 15 through which a bolt 16 passes become.
  • the bolts 16 in turn have removable Spindle heads 17, which in turn are the ends of the winding coils 5 and fix 6.
  • a second spindle holder 18 On the opposite end of the Printing form cylinder 1 is a second spindle holder 18 provided that also only from the outside from Printing form cylinder 1 is removable.
  • the second Spindle holder 18 takes both a gear 19 and Ratchet wheel 20, which with a pawl 21st cooperates, which in turn is biased by a spring 22 is.
  • a spring 22 By means of the pawl 20, one of the Winding coils 5, 6 are blocked in their position during by turning the other winding spool further Print image carrier 3 on the lateral surface 9 of the Printing form cylinder 1 can be clamped.
  • FIG. 2 shows the parts of the Rewinding mechanism 4.
  • To replace the parts of the Rewinding mechanism 4 is the dismantling of the spindle holder 18 required outside the machine. Parts 12 to 17 are without dismantling the spindle holder 22 through the Circumferential opening 2 removable.
  • the printing form cylinder 1 comprises a first cylinder end part 26 and a second Cylinder end part 28, between which a middle piece 23 is screwed, which contains a peripheral opening 2.
  • To the Cylinder end parts 26 and 28 are pins 27 and 29, respectively formed by which the printing form cylinder 1 in the Machine is stored.
  • On one of the cylinder faces 26 or 28 - here on the second cylinder end part 28 - is a Storage part 30 arranged. This storage part 30 is with Provide openings, which components of the figure 2 closer Record the rewinding mechanism 4 shown.
  • the Storage part 30 can for example have a Screw connection 31 with the second cylinder end part 28 be connected. Is the print carrier stock on one of the Winding spools 5, 6 are exhausted, these are turned by Tooth segments 12 and 13 and releasing the bias of the Compression springs 15 moved away from the spindle heads 17 and through the peripheral opening 2 removed. In the event of service, this can be done also the screw connection 31 through the peripheral opening 2 between storage part 30 and the corresponding Cylinder end part to be released; the storage part 30 together with the components of the Rewinding mechanism 4 from inside the printing form cylinder 1 removable. In comparison, it is the one in FIG. 2 reproduced configuration required the second Disassemble spindle holder 18 from the outside, which is a removal of the printing form cylinder 1 from the machine is required.
  • the storage part 30 can of course just as well first cylinder end part 26 may be included, then this cylinder front part corresponding to the second Cylinder front part 28 would be formed.
  • the cylinder end parts 26 and 28 each have Integrated bearer rings 32 and 34. This one-piece Execution does not create a joint, so that there is a Tolerance problem in the surface processing of the Treads 33 and 35 are not. So there is Possibility of finishing the first Cylinder front part 26 of this as well as the tread 35 ready to grind together.
  • the second is analogous Machining cylinder end part 28.
  • Fig. 4 shows a further variant of a Winding reel storage.
  • winding spool 5 is in one position shown to remove the supply roll while the Coil 6 is shown in the position it also in the company.
  • first cylinder end part 26 of the printing form cylinder 1 are In the area of the winding coils 5, 6, shells 44 are mounted, the one with a screw 45 on the first Cylinder front part 26 are attached.
  • the pin 27 of the Printing form cylinder 1 is in the side wall of the machine stored, which is not shown here, so that the Access to the first cylinder part 26 from the outside through the Machine side wall is very difficult.
  • the shells 44 mentioned are each of sleeves 37 enforced. There is one on each sleeve 37 Cone 42, one roller bearing and one toothed segment 38 or 39. screwed into the cylinder end part 26, take two provided with a stop pin 47 one each Compression spring 48.
  • the pin 47 serves as an abutment for the Compression spring 48 which the cone 42 in the removal position for brings the coil 5.
  • the pin 47 is in the bore in Guided cylinder part 26; is its axial displacement limited by the stop on the pin 47.
  • toothed segment 38 on each of the sleeves 37 and 39.
  • the toothing of the two toothed segments 38, 39 serves the two coils 5 and 6 in the same way to lock simultaneously.
  • the two toothed segments 38, 39 become axial from the shell 44 when rotating via axial curves moved away so that the coils 5 and 6 are tensioned.
  • By the axial curves can be the two toothed segments 38, 39 also to be placed on part 44. This will make the Coils 5 and 6 relaxed, so that removal of the coils 5th and 6 can be done from inside the cylinder.
  • each cone 42 is provided with an internal thread 51, so that the cone 42 after removal of the winding coils 5 and 6 can be easily removed from the sleeves 37. Then lie the plan sides of the two pins 47 free, so that this by means of one to be inserted into the pin thread 49 Tool can be rotated so that the pin thread 49 and the pin 47 can be removed from the first cylinder part 26 is.
  • the spring 48 holds the sleeve 37 the pin 47 in a prestressed position and thus fixed the winding spool 6 in the axial direction.
  • the spring 48 is tensioned.
  • the axial displacement the sleeves 37 always take place together; the toothed Segments 38, 39 never disengage for one reason
  • the upper sleeve 37 is a simplified illustration in FIG shown for the coil 5 in a relaxed position and the lower sleeve 37 for the coil 6 in the operating state reproduced.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Printing Plates And Materials Therefor (AREA)

Claims (10)

  1. Dispositif pour enrouler un support d'image flexible autour d'un cylindre de forme, dans lequel à l'intérieur du cylindre de forme, sont prévues une première bobine d'enroulement pour le déroulement d'un support d'image qui peut être étiré sur la surface d'enveloppe du cylindre de forme et une seconde bobine d'enroulement pour l'enroulement du support d'image étiré sur la surface d'enveloppe et dans lequel, sur le cylindre de forme dans sa surface d'enveloppe, est réalisée une seule ouverture qui forme un creux dans l'intérieur dudit cylindre, dans laquelle la première et la seconde bobine d'enroulement sont disposées ensemble et à partir de laquelle le support d'image peut être enroulé de la première bobine d'enroulement sur la surface d'enveloppe et de cette dernière sur la seconde bobine d'enroulement, caractérisé en ce qu'un élément de support (30) soutenant un dispositif de rebobinage (4) pour le support d'image (3) est disposé de façon à pouvoir être prélevé de l'intérieur du cylindre de forme (1) se trouvant dans sa position de montage.
  2. Dispositif selon la revendication 1, caractérisé en ce que l'élément de support (30) est disposé dans la zone de l'une des parties frontales du cylindre de forme (1).
  3. Dispositif selon la revendication 1, caractérisé en ce que la première et la seconde bobine d'enroulement (5, 6) du dispositif de rebobinage (4) pour le support d'image (3) sont soutenues à l'intérieur du cylindre de forme (1) par l'élément de support (30).
  4. Dispositif selon la revendication 1, caractérisé en ce que l'élément de support (30) est fixé de manière amovible sur une partie frontale du cylindre (26, 28).
  5. Dispositif selon la revendication 1, caractérisé en ce que le cylindre de forme (1) comporte une partie centrale (23), une première (26) et une seconde (28) partie frontale de cylindre ainsi qu'un élément de support (30) démontable.
  6. Dispositif selon la revendication 4, caractérisé en ce que l'élément de support (30) est fixé sur la seconde partie frontale (28) du cylindre au moyen d'un assemblage à vis (31).
  7. Dispositif selon la revendication 1, caractérisé en ce que les bobines d'enroulement (5, 6) sont montées à rotation d'une part, dans les parties frontales du cylindre (26, 28) et d'autre part, dans l'élément de support (30).
  8. Dispositif selon la revendication 4, caractérisé en ce que les parties frontales du cylindre (26, 28) et l'élément de support (30) sont munis d'ouvertures pour le logement du dispositif de rebobinage (4).
  9. Dispositif selon la revendication 4, caractérisé en ce qu'une première partie frontale (26) du cylindre de forme (1) et une seconde (28) sont munies de couronnes de cylindre (32, 34) intégrées.
  10. Dispositif selon la revendication 9, caractérisé en ce que les surfaces de roulement (33, 35) des couronnes de cylindre (32, 34) intégrées sont prévues des deux côtés de la surface d'enveloppe (9) du cylindre de forme (1).
EP95116776A 1995-09-09 1995-10-25 Dispositif pour enrouler un support d'image flexible autour un cylindre de forme Expired - Lifetime EP0761435B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19533442 1995-09-09
DE19533442 1995-09-09
DE19536884A DE19536884C1 (de) 1995-09-09 1995-10-04 Vorrichtung zur Umwicklung eines Druckformzylinders mit einem flexiblen Druckbildträger
DE19536884 1995-10-04

Publications (2)

Publication Number Publication Date
EP0761435A1 EP0761435A1 (fr) 1997-03-12
EP0761435B1 true EP0761435B1 (fr) 1999-03-31

Family

ID=26018436

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95116776A Expired - Lifetime EP0761435B1 (fr) 1995-09-09 1995-10-25 Dispositif pour enrouler un support d'image flexible autour un cylindre de forme

Country Status (2)

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EP (1) EP0761435B1 (fr)
AT (1) ATE178270T1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2756388A1 (de) 1977-12-17 1979-06-21 Eisbein Develop Trommel fuer elektrographische kopergeraete
DE4303872C2 (de) 1992-04-24 1995-08-10 Roland Man Druckmasch Druckmaschine mit einem Formzylinder und Verfahren zur Druckvorbereitung des Formzylinders
DE4329125C1 (de) * 1993-08-30 1995-01-05 Heidelberger Druckmasch Ag Einrichtung zum Erneuern einer Druckfolie auf der Mantelfläche eines Formzylinders
DE4432817A1 (de) * 1994-09-15 1996-03-21 Roland Man Druckmasch Formzylinder

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Publication number Publication date
EP0761435A1 (fr) 1997-03-12
ATE178270T1 (de) 1999-04-15

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