EP1525997A1 - Habillage placé sur un cylindre et groupes d'impression d'une machine à imprimer comportant ledit cylindre - Google Patents

Habillage placé sur un cylindre et groupes d'impression d'une machine à imprimer comportant ledit cylindre Download PDF

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Publication number
EP1525997A1
EP1525997A1 EP04105168A EP04105168A EP1525997A1 EP 1525997 A1 EP1525997 A1 EP 1525997A1 EP 04105168 A EP04105168 A EP 04105168A EP 04105168 A EP04105168 A EP 04105168A EP 1525997 A1 EP1525997 A1 EP 1525997A1
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EP
European Patent Office
Prior art keywords
elevator
layer
printing unit
less
unit 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.)
Granted
Application number
EP04105168A
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German (de)
English (en)
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EP1525997B1 (fr
Inventor
Ralf Christel
Oliver Hahn
Karl Schaschek
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Koenig and Bauer AG
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Koenig and Bauer AG
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Publication of EP1525997A1 publication Critical patent/EP1525997A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N10/00—Blankets or like coverings; Coverings for wipers for intaglio printing
    • B41N10/02—Blanket structure

Definitions

  • the invention relates to elevators on a roller and printing units of a printing press with the roller according to the preamble of claim 1, 2 or 3 or 21, 23 or 46.
  • a printing blanket which consists of several layers and in extreme cases has a total thickness of 0.55 to 3.65 mm.
  • the Modulus of elasticity of cellular rubber layers is between 0.2 and 50 MPa or 0.1 to 25 MPa. Due to the special construction of the printing blanket and the properties of the Layers a blanket is achieved, which, when pressed together, not to lateral displacement or protuberance tends.
  • DE 19 40 852 A1 discloses a printing blanket for offset printing, which has a total thickness of approximately 1.9 mm.
  • a shear modulus as stress at 0.25 mm deformation is given at approximately 4.6, 1.9 and 8.23 kg / cm 2 in the case of a thickness of the printing blanket.
  • the goal here is to achieve a rapid recovery after a depression and a narrow thickness tolerance.
  • CH 426 903 A discloses an offset printing blanket, wherein usual indentation depths of 0 to 0.1 mm are present.
  • An increase in the indentation from 0.05 to 0.1 mm requires or has a consequence in the surface pressure of about 20.6 N / cm 2 . That is, in this range for the indentation depth and surface pressures of up to about 40 N / cm 2 there would be a linearized "spring characteristic" with a slope of about 412 N / cm 2 / mm.
  • EP 1 208 997 A1 discloses a printing blanket for offset applications, preferably for Printing surface structured substrates such as corrugated board.
  • a printing blanket for offset applications, preferably for Printing surface structured substrates such as corrugated board.
  • a compressible Intermediate layer of a thickness of 1 to 2 mm is the adaptation of the outer layer the surface profile of the printing material (eg corrugated cardboard) is possible.
  • EP 1 078 777 A2 discloses a rubber blanket sleeve with a compressible elastomer layer whose compression is in the range between 7% and 15% at 100 N / m 2 load.
  • one Printing machine is, for. B. in the inking and / or dampening unit and in particular in the offset method between printing cylinders, regularly soft on the material combination resorted.
  • the required for the color transfer surface pressure is through Impressing a yielding, z.
  • elastomeric layer soft elastomeric cover / elevator, Blanket, metal blanket, sleeve
  • the contact force has become permanent due to external conditions changed (long-wave interference), so there is a risk of too pale or too color intensive printed product until the time of a correction (waste). Changes the contact force dynamic by vibrations (short-wave interference) so expresses this in the formation of visible stripes in the printed product.
  • the invention is based on the object, an elevator for or on a roller, as well Printing units of a printing press, in particular paper-printing press, too create.
  • Printing units of a printing press in particular paper-printing press, too create.
  • u.a. a sensitivity to Cylinder vibration and / or channel bumps caused disturbances in the contact pressure, and so that the resulting from the printing system disadvantages in color transfer minimized become.
  • the achievable with the present invention consist in particular that a lower sensitivity to changes or fluctuations in the Anstellkraft (surface pressure) is achieved, and thus a high quality of Print product is easier to reach and can be maintained.
  • Anstellkraft surface pressure
  • an optimized design of the cylinder and their arrangement can the influence of the cylinder movements on the color transfer be reduced.
  • narrow points interrupted or reduced contact also reduces the vibration excitation itself.
  • the transfer of the fluid is by the execution of the elevator and / or the Arrangement of the rollers to each other significantly less affected by vibrations.
  • a spring characteristic, ie a slope in the dependence of the surface pressure of the indentation is at least in an advantageous range for the indentation in pressure-on position highest 700 (N / cm 2 ) / mm.
  • Favorable are less than 400 (N / cm 2 ) / mm.
  • An advantageous range of relative depression of the elevator in the operating state is z. B. between 10% and 25% between form and Carrying cylinder and 25% to 35% between transfer cylinder and paper.
  • z. B between 10% and 25% between form and Carrying cylinder and 25% to 35% between transfer cylinder and paper.
  • Areas for relative indentation are preferred for optimal results With regard to the required transition of the fluid while at the same time as small as possible Influence of fluctuations.
  • the surface pressure varies in pressure-on position in an advantageous embodiment highest in a range between 60 and 220 N / cm 2 , or different sub-ranges for fluids, eg. As printing inks, with greatly different rheological properties and / or different printing processes.
  • the surface pressure varies in even lower work areas (eg 40 to 60 or 80 N / cm 2 , or even 25 to 40 N / cm 2 , in each case in conjunction with the stated slope).
  • the curve should meet the condition of the said slope.
  • the width of the contact zone created by the pressing of the rollers in the nip has been i. d. R. kept as small as possible.
  • a broadened nipple brings one higher line force and thus a greater static deflection with it.
  • This Disadvantage is the elevator of the invention or the arrangement, however overcompensated.
  • the insertion of the elevator is e.g. at least 0.18 mm, in one advantageous embodiment with min. 0.25 mm.
  • the resulting width of the nip is z. B. in an advantageous embodiment at least 10 mm, in particular larger or equal to 12 mm. This can be achieved a favorable surface pressure.
  • the elevator or the layer allows the use slimmer or even longer impression cylinder, d. H. one opposite the diameter large length of the Cylinder.
  • the substrate is - in contrast to textile or inferior packaging printing - preferably paper with low strength, eg. B. at most 0.2 mm, which has a macroscopically substantially unstructured, flat surface.
  • These are, for example, papers with a basis weight of 8 to 150 g / m 2 , in particular 30 to 80 g / m 2 .
  • the surface can be uncoated (natural papers) or with small coating weights of up to 25 g / m 2 , in particular as for mass applications in web offset from 5 to 20 g / m 2 coating weight.
  • a printing machine, z. B. for newspaper or commercial printing, in particular a web-fed rotary printing press has rollers 01 rolling against each other; 02, which in the region of their touch a nip 03, z. B. a nip 03, form.
  • rolls 01; 02 an inking unit, a coating unit, or cylinder 01; 02 be a printing unit.
  • the cylinder 01; 02 is a forme cylinder 01 with an effective diameter D wPZ and a transfer cylinder 02 of an offset printing unit which interacts with a printing material, in particular paper ( see above ), printing ink on the printing material.
  • One of the cylinders 01; 02, z. B. the transfer cylinder 02 has on the lateral surface of a substantially incompressible, non-elastic core 04 with a diameter D GZK an elevator 05 or coating 05 with a soft, elastomeric layer 06 of a thickness t (or sum corresponding to effective layers) on.
  • a total thickness T of the elevator 05 is z. B. from the thickness t of the layer 06 and a thickness of an optionally associated with the layer 06 is substantially incompressible, inelastic support layer 10, for example, a metal plate (shown by way of example in Fig. 8) together. If the elevator 05 has no additional carrier layer 10, then the thickness t corresponds to the total thickness T.
  • the layer 06 can be constructed as an inhomogeneous layer 06 of multiple layers, which in total have the required property for the layer 06.
  • Core 04 and elevator 05 or coating 05 together form an effective diameter D wGZ of the transfer cylinder 02.
  • the effective diameter D wPZ is determined by the effective for rolling lateral surface of the forme cylinder 01 and optionally includes an applied on the outer surface of a main body 07 elevator 08, z. B. a printing plate 08.
  • the cylinder 01 hard surface can also be designed as acting together with the transfer cylinder 02 impression cylinder 01.
  • the embodiment of the layer 06 set forth below is not dependent on the design of the rollers 01; 02 as a transfer and forme cylinder 01; 02 or bound to the execution with a printing plate 08.
  • a profile for a surface pressure P in the nip of the two rollers 01 and 02 is shown schematically.
  • the surface pressure P extends over the entire area of the contact zone, wherein it reaches a maximum surface pressure P max at standstill at the level of a connecting plane V of the axes of rotation. This shifts in production to the incoming gap side due to the viscous force component.
  • the contact zone and thus the profile has a width B.
  • the maximum surface pressure P max is ultimately responsible for the color transfer and adjust accordingly.
  • Fig. 2 shows schematically the profile of the surface pressure P in the case of a larger indentation S, which simultaneously causes a broadening of the width B. If, nevertheless, the maximum surface pressure Pmax be achieved, the integration of the surface pressure P over the entire width B leads to an increase in a force between the two rollers 01; 02.
  • the absolute height of the surface pressure P in the nip 03 and their variation in the variation of the indentation S is largely determined by a spring characteristic of the layer 06 or the elevator 05 used with the layer 06.
  • the spring characteristic represents the surface pressure P as a function of the indentation S.
  • FIG. 3 shows by way of example some spring characteristics of conventional elevators 05, in particular blankets 05 with a corresponding layer 06.
  • the curves of FIG. 3 are determined by way of example on a quasi-static stamp test bench in the laboratory with the following results:
  • the Ambos is immobile and stiff (compared to the sample considered).
  • the sample, here the elevator 05 or the layer 06 is arranged between the stamp surface and the anvil surface.
  • the values determined in this way are subject to greater or lesser variations than the true material constant (without edge effects), depending on the measuring arrangement and measuring method. Due to edge effects, the measured values are usually slightly higher than the actual material constants (borderline case of infinitely large sample, stamp and anvil surface). These deviations are for example in the range of a few% (eg ⁇ 10%, in particular ⁇ 5% for the above-mentioned and customary arrangements) and can generally be estimated in their size. Due to this fact (small and possibly estimable errors), the values listed below should be considered as absolute errors for the material constant "surface pressure".
  • the surface pressures specified below as the intrinsic size, ie as the material constant absolute (or also as erroneous measured value) preferably apply to printing conditions of 20 ° to 35 ° C., for example, in particular at a test temperature of 25 ° C., and normal ambient pressure (eg 1013 mbar).
  • a slope .DELTA.P / .DELTA.S of the spring characteristic determines the fluctuation in the surface pressure P when the depression S (for example, when oscillating) changes.
  • the magnitude of a fluctuation ⁇ P of the required maximum surface pressure P max in the nip 03 about the average surface pressure P is approximately proportional to the slope ⁇ P / ⁇ S of the spring characteristics at the point S.
  • FIG a lift a FIG.
  • An elevator b has a lower pitch.
  • Lifts 05 which as a whole or whose layer 06 as such has a large pitch ⁇ P / ⁇ S, in particular in the range of the required maximum surface pressure P max in the pressure-relevant area, are referred to below as “hard”, those with a small pitch ⁇ P / ⁇ S referred to as “soft”.
  • the elevator 05 or the layer 06 is now called “soft" elevator 05 or "soft” Layer 06 executed.
  • a "hard” elevator 05 or a hard layer 06 performs a same relative movements of the rollers 01; 02 (or change of the distance A )
  • the soft elevator 05 thus causes a lower sensitivity of the printing process Vibrations and / or deviations at intervals from a setpoint.
  • the surface pressure varies in pressure-on position in an advantageous embodiment highest in a range between 60 and 220 N / cm 2 .
  • fluids e.g. As printing inks, with very different rheological properties, different areas within the above-mentioned area for the surface pressure may be preferred.
  • the slope should meet the condition on the slope.
  • the pressure-relevant area for the surface pressure P max is in a first advantageous embodiment between 60 to 220 N / cm 2 .
  • different areas within the above-mentioned area for the surface pressure may be preferred.
  • the range for the wet offset z. B. between 60 and 120 N / cm 2 , in particular from 80 to 100 N / cm 2 (shaded in Fig. 3 and marked with area I), while in the case of dry offset z. B. between 100 and 220 N / cm 2 , in particular from 120 to 180 N / cm 2 varies.
  • a soft elevator 05 (or its layer 06) at least in the range of 80 to 100 N / cm 2, a slope .DELTA.P / .DELTA.S of z. B. ⁇ P / ⁇ S ⁇ 700 (N / cm 2 ) / mm, especially ⁇ P / ⁇ S ⁇ 500 (N / cm 2 ) / mm, in particular less than 400 (N / cm 2 ) / mm.
  • the slope .DELTA.P / .DELTA.S should be smaller in the area concerned for the surface pressure P by at least a factor of two than is currently the case for elevators 05 in offset printing.
  • a pressure-relevant area for example, between 40 - 60 N / cm 2 (in Fig. 3 marked with area II) is selected.
  • the blanket 05 or the layer (s) 06 is in this case designed such that at least in a (test or working) region of the surface pressure P of 40-60 N / cm 2, a pitch of less than 350 (N / cm 2 ) / mm, in particular at most 300 (N / cm 2 ) / mm, in a special embodiment even highest 200 (N / cm 2 ) / mm or in the entire larger range of 40 - 80 N / cm 2 at least less than 400 (N / cm 2 ) / mm).
  • the characterization of the blanket 22 in this work area can be used alone or in addition to the above characterization in the areas mentioned, so that the blanket 22 is characterized by several support points.
  • the transfer cylinder 02 is equipped with such an elevator and with a pressure for a resulting surface pressure P of 40-60 N / cm 2 with the cooperating cylinder, ie with the forme cylinder 01 or the pressure point with forming impression cylinder to each other hired.
  • the work area is even selected with only one surface pressure P of 25-40 N / cm 2 (marked with area III in FIG. 3), the layer 06 or the soft elevator then being placed in a (testing or Working area) of the surface pressure P of 25-40 N / cm 2 should only have a slope of only at most 200 (N / cm 2 ) / mm, in particular at most 150 (N / cm 2 ) / mm.
  • the areas mentioned for the surface pressure I; II; III can represent both preferred working areas with respect to employment but also test areas for the layer 06 or the blanket 05. It is advantageous if, for a specific work area intended for employment, the test area used for the characterization corresponds to the work area.
  • the layer 06 a greater strength t or the elevator 05 a greater total strength T than before usual on.
  • the strength t the in terms of elasticity or compressibility functional layer 06 is, for example, 1.3 to 6.3 mm, especially 1.7 to 5.0 mm, in particular more than 1.9 mm.
  • the strength of one or more u. U. connected to the layer 06 (or more layers 06), essentially incompressible and inelastic layers on the side facing the core 04, which with the layer 06 for the purpose of dimensional and / or dimensional stability are connected (not shown).
  • inelastic Support layers for example in the area of the surface of the elevator 05 come.
  • the functional not for the "softness” of the elevator, but for the Form stability effective carrier layer 10 or carrier layers 10 or support layers can also be arranged between the "soft" layers.
  • she can for example, designed as metal, in particular stainless steel sheet, about 0.1 to 0.3 mm be strong. As a fabric, this can vary depending on the design of the elevator 05 from 0.1 to 0.6 mm thick.
  • the specified thickness t of the layer 06 refers in the case of several Layers of layers 06 on the sum of the functional for the above Characteristic (dependence surface pressure / indentation) and the elasticity or Compressibility competent "sublayers".
  • An elevator 05 then has, for example together with carrier layer (s) 10 the total thickness T from 2.0 to 6.5 mm, especially 2.3 to 5.9 mm.
  • the elastic layer 06 or its thickness t is understood as meaning the layer 06 or the sum of the layers 06 whose material has a modulus of elasticity in the radial direction of less than 50 N / mm 2 .
  • the layers possibly provided for support (fabric) or dimensional stability (support) have significantly greater modulus of elasticity, e.g. B. greater than 70, in particular greater than 100 N / mm 2 or even greater 300 N / mm 2 .
  • At least one partial layer of the layer 06, referred to here as an elastic layer, is made of porous material in an advantageous embodiment.
  • the elastic layer 06 may also include a cover layer 15 indicated by dashed lines in FIG. 8, the modulus of elasticity of which in the radial direction is less than 50 N / mm 2 .
  • a cover layer serves to form a closed surface and in this case contributes to the formation of "softness".
  • cover layers larger elastic modulus, z. B. greater than 70 N / mm 2 , in particular greater than 100 N / mm 2 or even greater than 300 N / mm 2 used, and then for this reason are not attributed to the elastic and / or compressible layer 06 here.
  • the "soft" elevator 05 (or layer 06) is preferably operated with a higher indentation S in comparison to conventional indentations S (shown schematically in FIG. 2 in comparison to FIG. 1), ie the two rollers 01; 02 are related to their respective effective but undisturbed diameter D wGZ , D wPZ further hired.
  • an optimal maximum surface pressure P max is achieved despite a smaller pitch .DELTA.P / .DELTA.S.
  • the employment of the rollers 01; 02 together takes place in an advantageous embodiment such that the indentation S to at least 0.18 mm, z. B. to 0.18 to 0.60 or even to 0.80 mm, in particular 0.25 to 0.50 or even to 70 mm, amounts.
  • the slope .DELTA.P / .DELTA.S of the spring characteristic is in an advantageous embodiment, at least in an area for the indentation of 0.22 to 0.38 mm less than 500 (N / cm 2 ) / mm, in particular even less than 250 (N / cm 2 ) / mm.
  • the slope or the differential quotient ⁇ P / ⁇ S is less than 125 (N / cm) at least in an indentation range of 0.30 to 0.50 mm 2 ) / mm.
  • a resulting by indentation S of the layer 06 width B of the contact zone in a projection perpendicular to a joint plane V of their axes of rotation is advantageously at least 5%, in particular at least 7% of the undisturbed effective diameter D wGz the roller 02 with layer 06 in Nipp with the forme cylinder 01, and at least 7%, in particular at least 9%, of the undisturbed effective diameter D wGz of the roller 02 with layer 06 in the nip of the nip traversed by the web 13 with a counterpressure cylinder forming the pressure point (eg a second transfer cylinder 14).
  • the design and / or arrangement of the "soft" elevator is 05 particularly advantageous if one of the two co-acting rollers 01; 02 (or also both) at least one interference affecting the unwinding 09; 11 on her having effective lateral surface.
  • This disorder 09; 11 can as a break 09; 11 an axially extending shock 09; 11 two ends of one or more elevators 05; 08 be.
  • This channel 09; 11 has an opening towards the lateral surface, through which the ends are guided.
  • the channel 09; 11 a device for clamping and / or tensioning the elevator 05; 08 or the elevators 05; 08 exhibit.
  • width B09; B11 of the channel 09; 11 smaller to choose as the width B of the contact zone.
  • Softer lifts 05 or softer layers 06 lead in narrow channels 09 11 thus to a Attenuation and a temporal extension of the channel strike.
  • the transfer cylinder 02 ends of a metal blanket in the channel 11 be arranged.
  • the layer 06 is in this case on a dimensionally stable support, z.
  • a thin metal plate a plate
  • the folded ends in the Channel 11 are arranged.
  • the channel 11 can then be extremely narrow in the circumferential direction, z. B. less than or equal to 5 mm, in particular less than or equal to 3 mm.
  • the channel 09 is in an advantageous embodiment with a Width in the circumferential direction is less than or equal to 5 mm, in particular less than or equal to 3 mm, executed.
  • the allowable ratio B09: B or B11: B is smaller by compared to the usual jobs larger Touch zone (footprint width) the allowable ratio B09: B or B11: B.
  • the width B09; B11 of the channel 09; 11 in the region of its opening or mouth to the lateral surface of the core 04 or Main body 07 in the circumferential direction at most in the ratio 1: 3 to that by the Pressing resulting width B of the contact zone (impression strip) is.
  • the soft layer 06 preferably has a relation to more commonly used Materials on a reduced damping constant, so despite the due to the higher indentation S occurring during unwinding higher load and Relief speeds no higher heat is generated.
  • the must Layer 06 be designed such that a sufficiently fast regression or -spring after passing through the nip 03 or the Nipps with the Form cylinder 01 takes place in the starting position, so that, for example, at next contact with a roller or cylinder or again the Output strength is present.
  • Fig. 4 and 5 is an advantageously configured with the layer 06, as so-called double printing unit 12 executed printing unit 12 shown.
  • the forme cylinder 01 associated transfer cylinder 02 of a first cylinder pair 01; 02 works over a printing material 13, z. B. a web 13 with a likewise as a transfer cylinder 14 executed impression cylinder 14 together, which also has a forme cylinder 16 is assigned.
  • All four cylinders 01; 02; 14; 16 are different Drive motors 17 mechanically independently driven (Fig. 4).
  • a Modification are forming and transfer cylinders 01; 02; 14; 16 in pairs coupled by a paired drive motor 17 (on the forme cylinder 01, 16, on Transfer cylinder 02; 14 or parallel) (FIG. 5).
  • the form cylinder 01; 16 and the transfer cylinder 02; 14 are in a first embodiment (Example 1) as a cylinder 01; 02; 14; 16 double circumference, ie with a circumference of substantially two stationary printed pages, in particular of two newspaper pages executed. They are with effective diameters D wGZ ; D wPZ made between 260 to 400 mm, in particular 280 to 350 mm.
  • the transfer cylinder 02; 14 On the lateral surface of the core 04, the transfer cylinder 02; 14 in each case at least one elevator 05 a total thickness T from 2.0 to 6.5 mm, in particular from 2.3 to 5.9 mm.
  • the slope .DELTA.P / .DELTA.S of the spring characteristic is at least in the pressure-relevant area (see above) below 700 (N / cm 2 ) mm, in particular below 500 (N / cm 2 ) mm.
  • Shaping and transfer cylinder 01; 02; 14; 16 are set in pairs in such a way that the width B of the contact zone between the forming and transfer cylinders 01; 02; 14; 16 in Anstellage 10 to 25 mm, in particular 12 to 21 mm.
  • This configuration largely minimizes the sensitivity to vibration and inexact positioning while maintaining high print quality.
  • the individual drives by the drive motor 17 support this by the mechanical decoupling.
  • the forme cylinders 01; 16 and the transfer cylinder 02; 14 as a cylinder 01; 02; 14; 16 simple circumference, ie with a circumference of substantially a standing pressure side, especially from a newspaper page executed. They are with effective diameters D wGZ ; D wPZ running between 150 to 190 mm.
  • the transfer cylinder 02; 11 each at least one elevator 05 a total thickness T from 2.0 to 6.5 mm, in particular from 2.3 to 5.9 mm.
  • the slope .DELTA.P / .DELTA.S of the spring characteristic is at least in the pressure-relevant area (see above) again below 700 (N / cm 2 ) mm, in particular below 500 (N / cm 2 ) mm.
  • Shaping and transfer cylinder 01; 02; 14; 16 are set in pairs in such a way that the width B of the contact zone between the forming and transfer cylinders 01; 02; 14; 16 in Anstellage 7 to 18 mm, in particular 9 to 15 mm.
  • z. B. coated papers for the advantageous width of the contact zone z. B. 10 to 25 mm, in particular 14 to 19 mm.
  • the transfer cylinder 02; 14 each at least one elevator 05 a total thickness T from 2.0 to 6.5 mm, in particular from 2.3 to 5.9 mm.
  • the slope .DELTA.P / .DELTA.S of the spring characteristic is at least in the pressure-relevant area (see above) again below 700 (N / cm 2 ) mm, in particular below 500 (N / cm 2 ) mm.
  • Shaping and transfer cylinder 01; 02; 14; 16 are set in pairs in such a way that the width B of the contact zone between the forming and transfer cylinders 01; 02; 14; 16 in Anstellage 8 to 20 mm, in particular 9 to 17 mm.
  • z. B. coated papers for the advantageous width of the contact zone z. B. again 14 to 35 mm, in particular 17 to 21 mm.
  • a printing unit 19 is shown, which is either part of a larger Printing unit, such. B. a five-cylinder, nine-cylinder or ten-cylinder printing unit, is, or is operable as a three-cylinder printing unit 19.
  • the transfer cylinder 02 acts here with a no ink leading cylinder 18, z. B. a counter-pressure cylinder 18 as in particular a satellite cylinder 18, together.
  • the "soft" lateral surface the transfer cylinder 02 now acts with the "hard” lateral surface of the forme cylinder 01 on the one side, and with the "hard” lateral surface of the satellite cylinder 18 the other side together.
  • Form cylinder 01, transfer cylinder 02 and satellite cylinder 18 are in a first embodiment (Example 4) for Figure 6 or 7 as a cylinder 01; 02; 18 double circumference with effective diameters D wGZ ; D wPZ ; D wSZ made between 260 to 400 mm, especially 280 to 350 mm.
  • the transfer cylinder 02; 11 each at least one elevator 05 a total thickness T from 2.0 to 6.5 mm, in particular from 2.3 to 5.9 mm.
  • the slope .DELTA.P / .DELTA.S of the spring characteristic is at least in the pressure-relevant area (see above) below 700 (Ncm 2 /) mm, in particular below 500 (Ncm 2 /) mm.
  • Shaping and transfer cylinder 01; 02 and transfer cylinder 02; and satellite cylinders 18 are each paired in such a position that the width B of the contact zone in Anstellage each 10 to 25 mm, in particular 12 to 21 mm. This applies - especially for smooth papers (see above) - eg both for the Nipp between transfer and forme cylinder 02; 01 and those between transmission and satellite cylinder 02; 18.
  • For rough paper increase the width B in the transmission satellite cylinder knob by at least 2 mm, preferably by 3 mm.
  • a second embodiment (Example 5) for Fig. 6 or 7 are forme cylinder 01, transfer cylinder 02 and satellite cylinder 18 as a cylinder 01; 02; 18 simple circumference, ie with a circumference of substantially a standing pressure side, in particular from a newspaper page executed. They are with effective diameters D wGZ ; D wPZ ; D wSZ performed between 120 to 180 mm, in particular 130 to 170 mm.
  • the transfer cylinder 02; 11 each at least one elevator 05 a total thickness T from 2.0 to 6.5 mm, in particular from 2.3 to 5.9 mm.
  • the slope .DELTA.P / .DELTA.S of the spring characteristic is at least in the pressure-relevant area (see above) again below 700 (N / cm 2 ) mm, in particular below 500 (N / cm 2 ) mm.
  • Shaping and transfer cylinder 01; 02 and transfer cylinder 02; and satellite cylinders 18 are each paired in such a position that the width B of the contact zone in Anstellage each 7 to 18 mm, in particular 9 to 15 mm. This applies - especially for smooth papers (see above) - eg both for the Nipp between transfer and forme cylinder 02; 01 and those between transmission and satellite cylinder 02; 18.
  • For rough paper increase the width B in the transmission satellite cylinder knob by at least 2 mm, preferably by 3 mm.
  • Fig. 6 or 7 are Transfer cylinder 02 and satellite cylinder 18 as a cylinder 01; 02; 18 double Scope, d. H. with a circumference of substantially two standing printed pages, especially newspaper pages, and the forme cylinder 01 executed with a simple scope.
  • the jobs are to be selected in such an advantageous manner that in the Nipp between form and transfer cylinders 01, 02, the widths B from the o.g. Not shown third embodiment (Example 3) of the double printing, are achieved while for the Nippstelle between transmission and satellite cylinders 02, 18 the one of the first embodiment (Example 4) to FIGS. 6 and 7 are to be applied.
  • Fig. 6 or 7 are Formund Transfer cylinder 01; 02 as a cylinder 01; 02; 18 simple size, d. H.
  • a circumference of substantially a stationary pressure side, in particular Newspaper page, and carried out the satellite cylinder 18 with double the circumference. in this connection are to choose the employment in such an advantageous manner that in the Nipp between Form and transfer cylinders 01, 02 the widths B from the o.g. second Embodiment (Example 2) of the double printing unit can be achieved while for the Nip between transmission and satellite cylinders 02, 18 that of the second Embodiment (Example 5) to the figures 6 and 7 are to be applied.
  • the aforementioned elevator 05 or the layer 06 is z. B. in a printing unit with a or several long but slim cylinders 01; 02; 14; 16 arranged.
  • the forme cylinder 01; 16 and the transfer cylinder 02; 14 z. B. in the region of their bales each have a length which four or more widths of a printed page, z. B. a newspaper page, z. B. 1100 to 1,800 mm, in particular 1,500 to 1,700 mm corresponds.
  • the diameter D wGZ ; D wPZ at least of the forme cylinder 01; 16 is z. B. 150 to 190 mm, in particular 145 to 185 mm, which corresponds in scope substantially a length of a newspaper page ("single circumference").
  • the device is advantageous in which the ratio between the diameter and length of the cylinder 01, 02; 14; 16; 18 is less than or equal to 0.16, in particular less than 0.12, or even less than or equal to 0.08.
  • the diameter of at least the forme cylinder 01; 16 is z. B. at 260 to 400 mm, in particular at 260 to 340 mm, which corresponds in scope substantially two lengths of a newspaper page ("double circumference").
  • a ratio of the diameter D wGZ ; D wPZ at least of the forme cylinder 01; 16 to its length here is 0.11 to 0.17, in particular 0.13 to 0.16.

Landscapes

  • Printing Plates And Materials Therefor (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Friction Gearing (AREA)
EP04105168A 2003-10-21 2004-10-20 Habillage placé sur un cylindre et groupes d'impression d'une machine à imprimer comportant ledit cylindre Not-in-force EP1525997B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10349387 2003-10-21
DE10349387 2003-10-21

Publications (2)

Publication Number Publication Date
EP1525997A1 true EP1525997A1 (fr) 2005-04-27
EP1525997B1 EP1525997B1 (fr) 2006-03-22

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EP04105168A Not-in-force EP1525997B1 (fr) 2003-10-21 2004-10-20 Habillage placé sur un cylindre et groupes d'impression d'une machine à imprimer comportant ledit cylindre

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Country Link
EP (1) EP1525997B1 (fr)
AT (1) ATE320923T1 (fr)
DE (1) DE502004000383D1 (fr)
ES (1) ES2258254T3 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH426903A (de) 1958-10-16 1966-12-31 Grace W R & Co Offset-Drucktuch oder zum Ersatz der abgenutzten oberen Schichten eines solchen verwendbares Schichtgebilde
DE1940852A1 (de) 1968-08-10 1970-02-12 Dunlop Co Ltd Druckdecke
EP0448469A1 (fr) * 1990-03-23 1991-09-25 Rollin S.A. Elément élastique et compressible d'impression formant blanchet
US5884559A (en) * 1996-12-13 1999-03-23 Sumitomo Rubber Industries, Ltd. Helical thread printing blanket
EP1078777A2 (fr) 1999-08-26 2001-02-28 ContiTech Elastomer-Beschichtungen GmbH Blanchet d'impression offset tubulaire en caoutchouc
WO2001039974A2 (fr) * 1999-12-02 2001-06-07 Koenig & Bauer Aktiengesellschaft Cylindre de transfert d'une rotative
EP1208997A1 (fr) 2000-11-24 2002-05-29 ContiTech Elastomer-Beschichtungen GmbH couverture pour l'impression offset
WO2003086774A2 (fr) * 2002-04-18 2003-10-23 Koenig & Bauer Aktiengesellschaft Habillage place sur un cylindre, agencements dudit cylindre par rapport a un second cylindre et groupes d'impression d'une machine a imprimer comportant ledit cylindre

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH426903A (de) 1958-10-16 1966-12-31 Grace W R & Co Offset-Drucktuch oder zum Ersatz der abgenutzten oberen Schichten eines solchen verwendbares Schichtgebilde
CH467169A (de) 1958-10-16 1969-01-15 Grace W R & Co Kompressibles Schichtmaterial für Druckzwecke
DE1940852A1 (de) 1968-08-10 1970-02-12 Dunlop Co Ltd Druckdecke
EP0448469A1 (fr) * 1990-03-23 1991-09-25 Rollin S.A. Elément élastique et compressible d'impression formant blanchet
DE69107317T2 (de) 1990-03-23 1995-09-28 Rollin Sa Elastisches und kompressibles Drucktuch.
US5884559A (en) * 1996-12-13 1999-03-23 Sumitomo Rubber Industries, Ltd. Helical thread printing blanket
EP1078777A2 (fr) 1999-08-26 2001-02-28 ContiTech Elastomer-Beschichtungen GmbH Blanchet d'impression offset tubulaire en caoutchouc
WO2001039974A2 (fr) * 1999-12-02 2001-06-07 Koenig & Bauer Aktiengesellschaft Cylindre de transfert d'une rotative
EP1208997A1 (fr) 2000-11-24 2002-05-29 ContiTech Elastomer-Beschichtungen GmbH couverture pour l'impression offset
WO2003086774A2 (fr) * 2002-04-18 2003-10-23 Koenig & Bauer Aktiengesellschaft Habillage place sur un cylindre, agencements dudit cylindre par rapport a un second cylindre et groupes d'impression d'une machine a imprimer comportant ledit cylindre

Also Published As

Publication number Publication date
EP1525997B1 (fr) 2006-03-22
ATE320923T1 (de) 2006-04-15
ES2258254T3 (es) 2006-08-16
DE502004000383D1 (de) 2006-05-11

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