EP0144334B1 - Halterung für eine druckplatte - Google Patents

Halterung für eine druckplatte Download PDF

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Publication number
EP0144334B1
EP0144334B1 EP84901345A EP84901345A EP0144334B1 EP 0144334 B1 EP0144334 B1 EP 0144334B1 EP 84901345 A EP84901345 A EP 84901345A EP 84901345 A EP84901345 A EP 84901345A EP 0144334 B1 EP0144334 B1 EP 0144334B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
bracket
bracket according
printing
shaft
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
Application number
EP84901345A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0144334A1 (de
Inventor
Reiner Roosen
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT84901345T priority Critical patent/ATE28057T1/de
Publication of EP0144334A1 publication Critical patent/EP0144334A1/de
Application granted granted Critical
Publication of EP0144334B1 publication Critical patent/EP0144334B1/de
Expired 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
    • B41F27/005—Attaching and registering printing formes to supports
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/36—Means for registering or alignment of print plates on print press structure

Definitions

  • the invention relates to a holder for printing plates to be applied to printing cylinders of a flexographic printing machine, the longitudinal axis of the holder being aligned with the longitudinal axis of the cylinder and the holder comprising a rail which can be detachably arranged on the cylinder.
  • Flexographic printing is a rotary high-pressure process for, for example, imprints on packaging, forms, brochures or the like, in which printing plates consisting of photopolymers or rubber are preferably glued to the printing cylinders.
  • US-A-2,641,181 describes a holder of the type described at the outset, which is fixedly connected to the cylinder by means of holes drilled in the cylinder surface. Due to the type of attachment alone, an undesirable installation effort is required, and an interchangeable insert for several cylinders is not possible or is only possible with difficulty.
  • the rail has projections or recesses which interact with recesses or projections present in the pressure plates and that the holder aligned with the longitudinal axis of the cylinder can be supported by centering elements on the shaft of the cylinder and / or this at least partially surrounds.
  • This bracket is attached to the printing cylinder when a new plate or a new printing plate is to be glued to the printing cylinder. In doing so, there must always be a clear orientation with respect to the pressure cylinder axis. This is ensured according to the invention by the self-centering of the holder. After this has been done, the section which alternates with the rail is detached from the rail in order - after the holder itself has been removed - to also glue this area onto the printing cylinder.
  • the clichés are applied to the other printing cylinders, which have a clear orientation to one another in the machine. This ensures that the individual printing plates are arranged with an exact fit to one another, so that the finished printing work has no undesired overlaps originating from the individual clichés.
  • FIG. 1 shows, by way of example, a printing cylinder 14 of a flexographic printing press with a removable holder 10 which is intended for aligning printing plates to be arranged on the printing cylinder 14.
  • the holder 10 preferably has the shape of a rail 12 which has laterally angled end sections 20 and 22 which in turn interact with the shaft 18 of the pressure cylinder 14.
  • sections 20 and 22 have hollow cylindrical sections 28 and 30, the inside diameter of which is adapted to the outside diameter of shaft 18. Accordingly, if the sections 28 and 30 are placed on the shaft 18, the rail 12 is aligned in the longitudinal axis direction of the printing cylinder 14.
  • Sections 20 and 22 of rail 12 can also be designed differently, e.g. B. have a portion that engages around the shaft 18 from below.
  • the sections 20 and 22 run parallel or almost parallel to the end faces 26 of the printing cylinder 14 and can be attached to this by means of a fastening device such.
  • a screw 24 can be positioned non-rotatably. So that the rail can assume a desired position not only parallel to the longitudinal axis of the cylinder 14, but also with respect to the circumferential surface, without extensive adjustment work, longitudinal slots 32 and 34 are provided, which are in the longitudinal direction of the rail 12, that is to say parallel to the longitudinal axis of the cylinder 14 , run.
  • the surface of the printing cylinder 14 now has marking lines, not shown, to which the slots 32 and 34 are aligned will.
  • the holder 10 assumes the desired position relative to the cylinder 14 in order to be able to apply printing plates or clichés, not shown, which are then arranged with a precise fit on the printing cylinder 14 and in relation to further printing cylinders.
  • the rail 12 in the exemplary embodiment has projections 16, which are assigned corresponding recesses on one edge of the pressure plate.
  • the recesses are penetrated by the projections 16. This gives the cliché the precise alignment with the printing cylinder 14.
  • the section of the printing plate located outside the rail can then be glued to the printing plate without difficulty. Then the section of the plate that interacts with the rail 12 is lifted off the cliché in order to be able to remove the holder 10.
  • the corresponding section of the pressure plate is also pressed onto the pressure plate 14 and glued.
  • the holder 10 is - as described above - applied to further printing cylinders of the flexographic printing press which are clearly oriented towards the printing cylinders 14 in order to allow the projections 16 to interact with the recesses of further clichés , which ensures that the other clichés to be used also have the exact fit on the printing cylinders, which is required that the finished printing does not show any undesired overlaps from the individual printing plates.
  • the printing plates applied by means of the holder according to the invention then print in register.
  • a holder 38 is shown in side view, which is arranged on the shaft 18 of the printing cylinder 14 precisely, but releasably.
  • the holder 38 also comprises a rail 40 with projections 42 which can pass through recesses of a cliché, not shown.
  • Cheeks 46 and 48 which can be separated, run along the end faces (the end face 44 of the cylinder 14 is shown), which together form sections which correspond to the function according to the elements 20, 22, 24, 28, 30 of the exemplary embodiment according to FIG. 1.
  • the jaws 46 and 48 which are rotatable about the axis 50, have V-shaped recesses 52 and 54 in the regions facing one another, which, when assembled, form a quadrangular shape and which have their boundaries 56, 58, 60 and 62 on the cylinder 14 attached bracket 38 come to rest in sections on the core or the shaft 18. This results in a self-centering, for which the jaws 46 and 48, due to spring force, show the endeavor to keep the free area formed by the recesses 52 and 54 as small as possible.
  • a locking element 64 which can be pivoted and can be introduced into a recess 66 of the jaw 48 in such a way that after the holder 38 has been aligned in a precise position on the cylinder 14 by means of the knurled screw 68 or a similarly acting element the jaws 46 and 48 are tightened in order to rest non-rotatably on the shaft 18. This ensures that the holder 38 can no longer be rotated in an uncontrolled manner.
  • FIGS. 3 to 5 show a further embodiment of a holder 70 according to the invention which is to be positioned precisely on a printing cylinder 72 of a flexographic printing press with respect to the longitudinal axis 74 of the cylinder 72.
  • the bracket comprises a bar 76 which has projections 78 on which clichés are to be arranged in the manner described above.
  • the strip 76 is slidably arranged on a wedge 79, which in turn is preferably a square tube 80 as a carrier.
  • the slidability of the bar 76 takes place via a sliding block 84 which is embedded in the wedge 79 on the one hand and on the other hand received by the rear of the bar 76.
  • the bar 76 is preferably fixed in relation to the connecting tube 80 by means of a knurled screw 82.
  • the displaceability of the bar 76 in relation to the support tube 80 has the advantage that the bar 76 and thus the cliché can be moved horizontally to the pressure cylinder 72.
  • connection plate 90 extends on both sides of the end faces 88 of the pressure cylinder 72, to which in turn a centering element 92 and a tensioning lever 94 are fastened. Furthermore, the connection plate 90 has in the upper region a web 96 which runs parallel to or approximately parallel to the square tube 80 and is angled from the connection plate 90 and which is penetrated by a tensioning screw 98 for interacting with the tensioning lever 94.
  • the centering element 92 now has a preferably V-shaped recess 100, which can be placed on the pin or the shaft 102 of the pressure cylinder 72. This results in self-centering. So that the exact alignment of the bar 76 and thus the cliché takes place in relation to the pressure cylinder 72, the centering element 92 is adjustable via an adjusting screw 104 with respect to the connecting plate 90 in order to carry out pinning when the positional alignment with the longitudinal axis 74 of the pressure cylinder 72 is achieved to be able (indicated by reference numerals 106, 108).
  • the pin 102 is removed from the tensioning lever 94 grips, which ensures immovability of the bracket 70 on the pin 102.
  • the tensioning lever 94 is moved in the direction of the pin by means of the tensioning screw 98 in order to interact with a lower leg 110 on the underside or a cut on the underside of the shaft 102.
  • the clamping lever 94 is pivotable about a pin 112 and must be moved against the spring force exerted by a compression spring 114 in the direction of the pin 102 by means of the clamping screw 98; because in the normal position, the clamping lever 94 is pivoted away from the pin 102, so that it can also be used as a handle for the holder 70.
  • clichés can now be applied to the bar 76 or the projections 78 in a precise position on the circumference of the printing cylinder 72, elements of the holder 70 then having to be exchanged if the circumference, pin diameter or length of the printing cylinder 72 should change. If the circumference and the pin 102 of the pressure cylinder 72 remain constant as the length changes, then only the connecting tube 80 has to be exchanged without changes in the connection plates 90 connected via the pins 86, the centering elements 92 emanating from them or the tensioning lever 94 being necessary is.
  • the diameter of the cylinder pin 102 is changed without the circumference and length of the pressure cylinder 72 being varied, only the centering plates 92 need to be replaced. Otherwise, the other elements can be retained in order to ensure a positionally accurate alignment of the holder 70 with respect to the longitudinal axis 74 of the printing cylinder 72. If only the circumference of the cylinder is changed and the length of the pressure cylinder is kept constant, an exchange of both the centering elements and the clamping levers is necessary in order to enable the holder 70 to be aligned in the correct position.
  • the holder according to the invention can be included from the outset with an assortment of centering elements, tensioning levers or holding tubes adapted to different cylinder dimensions, in order to be able to use the holder according to the invention without problems in connection with different cylinder types.
  • centering elements 92 can also be inserted vertically displaceably in the connecting plates 90, in order to enable adaptation to different cylinder circumferences and / or pin diameters. In these cases, the clamping levers only have to be replaced if necessary.
EP84901345A 1983-06-11 1984-03-29 Halterung für eine druckplatte Expired EP0144334B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84901345T ATE28057T1 (de) 1983-06-11 1984-03-29 Halterung fuer eine druckplatte.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8317151U 1983-06-11
DE19838317151U DE8317151U1 (de) 1983-06-11 1983-06-11 Halterung fuer eine druckplatte

Publications (2)

Publication Number Publication Date
EP0144334A1 EP0144334A1 (de) 1985-06-19
EP0144334B1 true EP0144334B1 (de) 1987-07-01

Family

ID=6754187

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84901345A Expired EP0144334B1 (de) 1983-06-11 1984-03-29 Halterung für eine druckplatte

Country Status (9)

Country Link
US (1) US4604811A (un)
EP (1) EP0144334B1 (un)
JP (1) JPS60501549A (un)
AU (1) AU569204B2 (un)
DE (2) DE8317151U1 (un)
DK (1) DK39785D0 (un)
FI (1) FI72466C (un)
NO (1) NO850489L (un)
WO (1) WO1984004900A1 (un)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6273166B1 (en) * 1996-08-15 2001-08-14 Reiner Roosen Adhesive tape feeding device for a pressure cylinder

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4878407A (en) * 1986-05-01 1989-11-07 The Ward Machinery Company Vacuum die mount
US4825558A (en) * 1987-09-14 1989-05-02 Adflex Corporation Pin bar for mounting flexographic printing plates
DE8912428U1 (un) * 1989-10-19 1991-02-21 Roosen, Reiner, 6450 Hanau, De
US5511479A (en) * 1994-06-27 1996-04-30 Tension Envelope Corporation System and method for providing pin register holes in flexible printing plates and apparatus and method for aligning plates on a flexographic printing press plate cylinder
US5537927A (en) * 1994-08-26 1996-07-23 Tension Envelope Corporation Apparatus and method for precisely drilling alignment pin register holes in pre-marked flexible printing plates
US5701823A (en) * 1997-01-27 1997-12-30 Morris; Jerry L. Self aligning tool for registering rotary printing plates and method of registering plates
US6389705B1 (en) * 2000-03-24 2002-05-21 Silitek Corporation Optical calibration plate and the assembling method for the same

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2559533A (en) * 1944-11-22 1951-07-03 Joseph S Daniels Printing plate positioner
US2641181A (en) * 1950-11-03 1953-06-09 Leeberg Edward Means for positioning and registering printing members on cylinders of rotary presses
US2810204A (en) * 1954-02-08 1957-10-22 Arnold L Imshaug Color plate register gauge device
US2902771A (en) * 1957-08-07 1959-09-08 Diamond Gardner Corp Method of and apparatus for preregistering printing plates
GB851841A (en) * 1959-01-27 1960-10-19 Timsons Ltd Means facilitating the positioning of printing plates upon rotary printing components
US3206859A (en) * 1960-06-17 1965-09-21 John P Walsh Printing apparatus
DE1611383A1 (de) * 1967-10-06 1970-12-10 Koenig & Bauer Schnellpressfab Verfahren zum Aufbringen von registerhaltig gelochten Offsetplatten auf Plattenzylinder von Offsetdruckwerken
US3550283A (en) * 1968-04-02 1970-12-29 Eugene L Bernardi Method and apparatus for applying a printing plate to a support saddle
DE2526446A1 (de) * 1975-06-13 1976-12-23 Roland Offsetmaschf Vorrichtung zum justieren von druckplatten auf dem plattenzylinder von druckmaschinen mit hilfe einer ablesevorrichtung und auf den druckplatten einkopierten passkreuzen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6273166B1 (en) * 1996-08-15 2001-08-14 Reiner Roosen Adhesive tape feeding device for a pressure cylinder

Also Published As

Publication number Publication date
AU569204B2 (en) 1988-01-21
FI72466B (fi) 1987-02-27
US4604811A (en) 1986-08-12
EP0144334A1 (de) 1985-06-19
NO850489L (no) 1985-02-08
FI850404A0 (fi) 1985-01-31
FI850404L (fi) 1985-01-31
DK39785A (da) 1985-01-29
DE3464472D1 (en) 1987-08-06
WO1984004900A1 (fr) 1984-12-20
FI72466C (fi) 1987-06-08
AU2740084A (en) 1985-01-04
JPS60501549A (ja) 1985-09-19
DE8317151U1 (de) 1983-11-24
DK39785D0 (da) 1985-01-29

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