EP1896260B1 - Revetement de cylindre d'impression, combinaison d'un cylindre d'impression et d'un revetement de cylindre d'impression, et cylindre d'impression comprenant un revetement de cylindre d'impression fixe par serrage - Google Patents

Revetement de cylindre d'impression, combinaison d'un cylindre d'impression et d'un revetement de cylindre d'impression, et cylindre d'impression comprenant un revetement de cylindre d'impression fixe par serrage Download PDF

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Publication number
EP1896260B1
EP1896260B1 EP06741657A EP06741657A EP1896260B1 EP 1896260 B1 EP1896260 B1 EP 1896260B1 EP 06741657 A EP06741657 A EP 06741657A EP 06741657 A EP06741657 A EP 06741657A EP 1896260 B1 EP1896260 B1 EP 1896260B1
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EP
European Patent Office
Prior art keywords
clamping
printing cylinder
flange
leading
trailing
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.)
Not-in-force
Application number
EP06741657A
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German (de)
English (en)
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EP1896260A2 (fr
Inventor
Andreas Zahnd
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.)
Wifag Maschinenfabrik AG
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Wifag Maschinenfabrik AG
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Publication date
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Publication of EP1896260A2 publication Critical patent/EP1896260A2/fr
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Publication of EP1896260B1 publication Critical patent/EP1896260B1/fr
Not-in-force 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
    • B41F27/1281—Devices for attaching printing elements or formes to supports for attaching flexible printing formes details of the printing plate ends

Definitions

  • the invention relates to a covering which can be placed on a circumference of a printing cylinder of a rotary printing press and clamped in a clamping channel or two circumferentially offset from one another arranged clamping channels of the printing cylinder.
  • the coating is referred to below as Druckzylinderbelag. It is used for ink transfer and can be in particular a printing plate, preferably a printing plate, for a printing form cylinder or a blanket for a blanket cylinder.
  • the invention further relates to a combination of printing cylinder and printing cylinder pad and finally also a printing cylinder to which a printing cylinder pad is attached by clamping.
  • the invention generally aims at rotary printing, but in particular it is concerned with web offset printing.
  • impression cylinder linings are angled at their relative to the direction of rotation of the respective printing cylinder end and an opposite, trailing end, so that at the leading end and the trailing end ever a short clamping flange is obtained, with which the respective impression cylinder cover in the clamping channel or a respective clamping channel protrudes and is clamped there by means of a clamping device.
  • the printing cylinder coverings are usually plate-shaped, flexurally elastic body, such as printing plates, or have such a body as a carrier for a softer covering, as may be the case, for example, in Kunststofftüchem.
  • the leading and the trailing clamping flange are angled in each case in the known pressure cylinder linings dimensionally stable.
  • the leading clamping flange closes with the area of the pressure cylinder lining, which is located on the other Side of the edge obtained by the bend adjoins an acute angle of, for example, 40, 50 or 60 ° to engage in the respective clamping channel projecting its congruent, leading edge behind and in this way to secure the leading end positively and non-positively.
  • the trailing clamping flange is angled for attachment separately from the leading end in its own nip at a right angle or for attachment together with the leading end of the same or another Druckzylinderbelags obtuse, for example, including an angle of 120 °.
  • Such Druckzylinderbeläge are from the DE 103 14 343 A1 , of the USP 4,421,024 , of the USP 4,577,560 and the DE 195 09 561 A1 known. While these pressure cylinder pads at the leading and trailing end each have a flat clamping flange, suggests the DE 100 03 937 A1 a Druckzylinderbelag before, which is initially angled at its leading end at right angles and then bent in order to secure the leading end in the clamping channel.
  • the trailing clamping flange can be shaped accordingly or simply angled right angled and flat.
  • Printing cylinder coverings are also in the DD 261 765 A1 disclosed.
  • the invention is based on a pressure cylinder lining, which has a dimensionally stable angled clamping flange at a leading end and an opposite, trailing end.
  • the trailing end may be conventionally shaped, i. H. its clamping flange, which is referred to below as a trailing clamping flange, can be angled at least substantially at right angles. At least this corresponds to preferred embodiments.
  • the trailing clamping flange with the adjoining region of the printing cylinder pad from which it is angled also include a significantly greater angle than 90 °, for example, an angle of 110, 120 or 130 ° or possibly also an even blunter angle.
  • the clamping flange of the leading pressure cylinder end which is referred to below as the leading clamping flange, is under an at least substantially right angle to the connection region of the printing cylinder pad from which the leading clamping flange protrudes to form a leading edge. Therefore, the leading end can be particularly easily introduced into a clamping channel, namely simply pressed into the clamping channel, and from the clamping channel, ie a clamping gap formed in the clamping channel, to be pulled.
  • a change machine must perform for attaching and detaching the leading pressure forming end only one of home inevitable, with respect to the axis of rotation of the printing cylinder radial or at least substantially radial feed or Abstellieri.
  • the invention is based essentially on the recognition that the impression cylinder lining does not have to be brought into a rear grip for a secure hold on the impression cylinder even with its leading clamping flange. Rather, it is sufficient a purely non-positive attachment in a nip.
  • the leading end and the trailing end are at least as far as the same shape that when attaching and loosening the impression cylinder pad either the leading or the trailing end can be attached or detached first.
  • the direction of rotation of the printing cylinder can be freely selected for the purpose of changing the lining.
  • the trailing end can be hung first and the printing cylinder driven in rotation against the production direction or the leading end hung first and the printing cylinder driven in the production direction to be driven in rotation.
  • the freedom of choice achieved by the invention makes it possible, in particular, for printing units of so-called H-type construction to be mounted and removed on all printing forme cylinders of the printing unit in the same orientation relative to the respective printing forme cylinder.
  • the shape symmetry of the impression cylinder linings with respect to the covering ends is particularly beneficial for the fully automatic pad change, in which both ends are automatically clamped and released by means of a change machine. For example, all Druckzylinderbeläge be aligned horizontally when the first clamped clamping flange is inserted into the respective clamping channel. When releasing the respectively last to be solved clamping flange all printing cylinder coverings can also be held in horizontal alignment.
  • the printing cylinder lining according to the invention is formed completely symmetrical with respect to its two ends.
  • the direction of rotation of the printing cylinder plays in preferably exactly symmetrical coating ends irrelevant.
  • they are so largely the same shape that, in this case too, the direction of rotation plays no role for the practical handling of the printing cylinder lining.
  • the leading clamping flange can be angled several times to increase the rigidity, ie be polygonal in longitudinal section of the impression cylinder pad.
  • a clamping flange bent everywhere is conceivable and in principle also a combination of straight and bent flange sections:
  • Such a clamping flange is concave polygonal or round or mixed polygonal and round to the underside of the impression cylinder covering everywhere.
  • a polygonal clamping flange should have at most three bends. Preferably, he is Angled only twice.
  • the substantially right angle is measured between the adjoining the clamping flange portion of the printing cylinder pad, ie between the bottom or bearing surface of the printing cylinder pad, and a tangent to the free end, ie the outer free edge of the clamping flange.
  • the angle between the outermost of the flange sections and the underside of the impression cylinder lining is measured.
  • a preferably double-angled clamping flange whose inner flange portion which forms the edge with the adjoining portion of the impression cylinder cover should enclose an angle in the range of 90 ° to 105 ° with the underside of the impression cylinder lining and everywhere an equal length measured on the edge 2 to 5 mm.
  • the outer flange section enclosing the inner flange section should have an equal length of 5 to 10 mm everywhere and be angled away from the inner flange section by 5 to 20 °. The blunter the angle included between the underside of the impression cylinder pad and the inner flange portion, the greater the angle that the outer flange portion is angled from the inner flange portion.
  • a triple angled clamping flange whose innermost flange portion is preferably also at an angle from the range of 90 ° to 105 ° to the underside of the printing cylinder pad angle and has a length in the range of 2 to 4 mm.
  • the central flange portion should have a length in the range of 2 to 4 mm and angled from the innermost flange portion by 5 to 15 °.
  • the outermost flange portion should have a length in the range of 5 to 10 mm and be angled from the central flange portion by 5 to 15 mm.
  • the multiple angled clamping flange is preferably clamped only in its outer and outermost flange portion.
  • the flange sections are each plan in both versions.
  • leading clamping flange is simply flat.
  • leading clamping flange and the trailing clamping flange preferably both correspond to either the first embodiment or the second embodiment, it should not be excluded that the two embodiments are combined with each other by, for example, a flat leading clamping flange with a polygonal trailing clamping flange or more preferably a polygonal leading edge Clamping flange is combined with a plane trailing clamping flange.
  • the clamping flanges are each at most 15 mm and more preferably in each case at most 10 mm long.
  • this length specification corresponds to the height of the front free flange end measured on the edge formed with the adjoining region of the impression cylinder pad, which can be measured on the underside of the impression pad.
  • leading clamping flange with the adjoining region of the printing cylinder pad preferably includes exactly an angle of 90 °
  • the advantages of the invention, but basically in existence minor deviations from the 90 ° angle will be achieved. Accordingly, at least substantially at right angles, angles of 90 ° ⁇ 15 ° are also considered.
  • An angle of exactly 90 ° in both the leading and the trailing end is also advantageous in terms of narrowest possible channel opening on the peripheral surface of the cylinder, in particular in preferred embodiments in which the leading end and the trailing end or a trailing end of another Pressure cylinder pads are clamped in the same clamping channel in each case a separate nip.
  • a multiple angled Clamping flange is advantageous due to its increased rigidity, which is desired for insertion into the clamping channel.
  • the invention also relates, via the printing cylinder lining as such, to a combination of at least one printing cylinder and at least one printing cylinder lining.
  • the at least one pressure cylinder lining forms both at a leading end and at a trailing end depending a dimensionally stable angled clamping flange, hereinafter also referred to as leading clamping flange and subsequent clamping flange, the leading clamping flange is angled at least substantially at right angles.
  • the pressure cylinder is provided at its periphery with a clamping channel or with a plurality of clamping channels, which are arranged offset in the circumferential direction of the cylinder to each other.
  • three-width printing cylinder side by side for example, six single-sided printing cylinder coverings or three printing cylinder coverings can be arranged in panoramic format.
  • the pressure cylinder is adjusted with respect to its clamping channel or its clamping channels to the inventively shaped leading end of the printing cylinder cover or the plurality of printing cylinder coverings.
  • the clamping surface of a clamping gap against which the clamping flange is clamped adjacent is preferably shaped so that the clamping flange are not deformed by the clamping force and thus a conditional by the acting clamping force behind engagement can not take place. This ensures easy removal of the clamping flange.
  • the invention furthermore also relates to a printing cylinder, on the circumference of which the impression cylinder covering described above for the combination is arranged.
  • the printing cylinder has a clamping channel in which a clamping member is arranged, which forms a clamping gap for the leading clamping flange of the impression cylinder lining with a leading counter surface.
  • the clamping member is elastically tensioned against the leading mating surface.
  • the leading clamping flange of the printing cylinder pad is clamped in the clamping gap thus formed.
  • the mating surface is referred to as leading, because it forms the clamping gap for the leading clamping flange with the clamping member.
  • a leading edge of the clamping member arrangement of the leading counter surface is not mandatory, d. H. the leading counter surface can be arranged in principle trailing the cooperating clamping member.
  • the trailing end of the printing cylinder lining or, more preferably, a trailing end of a further impression cylinder lining is clamped in the clamping channel.
  • a further, trailing clamping gap for the trailing clamping flange is formed in the clamping channel with a further clamping member and a trailing counter surface, against which the further clamping member is elastically stretched.
  • only one nip can be formed in the clamping channel, in which the leading and the trailing clamping flange are clamped on each other.
  • the leading clamping flange would form the trailing mating surface in such a configuration, and the same clamping member would clamp both the leading and trailing clamping flanges. What has been said above with regard to the leading nip is preferably also valid for the trailing nip.
  • the clamping member and, if present, the further clamping member is or are advantageously set in a direction parallel to the clamping flange in the clamping channel so that the position of the center of gravity of the clamping member and, if another clamping member is present, also the position of its center of gravity, itself can not change in a direction which is parallel both to the clamping flange and radially to the axis of rotation of the printing cylinder. This prevents that the clamping member follow the clamping flange when pulling out of the clamping channel and thereby the adhesion can strengthen.
  • a guide is formed, which guides the clamping member movable at least substantially at right angles to a radial on the axis of rotation of the printing cylinder, wherein the radial extends through the opening of the clamping channel.
  • the clamping member is advantageously also supported radially outwards at the same time and fixed in this way as described above in order to prevent the frictional connection from being reinforced by pulling out the clamping flange.
  • the clamping member is preferably movably mounted in the clamping channel.
  • it is rigid in itself, so that it does not deform under the forces acting on the clamping member during operation, including the clamping force to be exerted by it.
  • the clamping member forms in preferred embodiments a clamping portion in which it forms the clamping gap, and a guide portion in which it is guided itself, preferably in the manner described above.
  • the clamping portion protrudes finger-like from the guide portion and towards the opening of the clamping channel.
  • a clamping force generating clamping device is preferably supported on the one hand on the clamping member and on the other hand on the other clamping member, so that the one of the clamping members each receives the clamping force for the other.
  • the tensioning means acts between the guide portions and more preferably, when the tensioning means is arranged and tensioned between the guide portions.
  • the clamping members lead with their guide sections advantageously each other, d. H.
  • the guide sections form a compact unit, which are accommodated in a geometrically simple design receiving space, which forms the guide for both clamping members.
  • a filler which also forms one of the two boundary edges of the channel opening at the same time, the leadership of at least one clamping member, preferably the clamping member and the further clamping member form.
  • clamping gaps are rotationally inverted in preferred embodiments.
  • FIG. 1 shows a printing cylinder pad 8 of a first embodiment in a longitudinal section.
  • the printing cylinder pad 8 is an elastically bendable printing form for offset printing.
  • Such Druckzylinderbeläge are generally formed as thin metal plates, which are each provided with an angled clamping flange before mounting on a printing cylinder, in the embodiment of a printing forme cylinder, in the imaged or still to be imaged area plan and at opposite ends.
  • the impression cylinder pad 8 corresponds to the usual printing forms. He has based on the direction of rotation of the printing cylinder at a leading end a leading clamping flange 8a and at a trailing end on a trailing clamping flange 8b.
  • the clamping flanges 8a and 8b are dimensionally stable, so that the printing cylinder pad 8 can be pressed with two clamping flanges 8a and 8b in a nip formed in a clamping channel of the printing cylinder for a clamping attachment of the printing cylinder pad 8.
  • the clamping flanges 8a and 8b are angled in a dimensionally stable manner from the respectively adjacent area of the impression cylinder pad 8.
  • Dimensionally stable means that the impression cylinder pad 8 under Retention of its angled clamping flanges 8a and 8b can be handled, especially when mounting on the impression cylinder and when removing.
  • the leading end and the trailing end of the printing cylinder pad 8 with the respective clamping flange 8a or 8b can be regarded as inherently stiff.
  • the two clamping flanges 8a and 8b are each angled at the same angle ⁇ , d. H. they conclude with the adjoining area of the printing cylinder pad 8 in each case the angle ⁇ .
  • the angle ⁇ is 90 °.
  • the impression cylinder pad 8 is symmetrical not only with respect to the included angle ⁇ , but also with respect to the length A of the clamping flanges 8a and 8b, d. H. the clamping flanges 8a and 8b have the same length A, measured in each case on the flange edge, d. H. on the subsequent region of the impression cylinder pad 8 in the plan state.
  • the length A should be at most 15 mm and at least 7 mm, in the embodiment it is 9 mm.
  • FIG. 2 shows a printing cylinder 1 in sections in a cross section.
  • an axially extending clamping channel is formed, in which a separate clamping gap is formed for a leading clamping flange 8a and a trailing clamping flange 8b.
  • the clamping flanges 8a and 8b belong to the same pressure cylinder lining 8.
  • a pressure cylinder 1 double or even larger circumference is the clamping flanges 8a and 8b different Druckzylinderbeläge 8.
  • the clamping flanges 8a and 8b in the respective Clamping gap with a in all operating conditions of the printing cylinder 1 always the same, predetermined clamping force held.
  • a clamping device is arranged, which comprises a clamping member 11, a further clamping member 15 and a tensioning device 19 arranged between the clamping members 11 and 15.
  • the clamping device consists only of the clamping members 11 and 15 and the clamping device 19.
  • the clamping device 19 is formed as a helical spring and acts as a compression spring.
  • the illustrated compression spring can already form the tensioning device 19 alone or in combination with only one further compression spring or with a plurality of further compression springs.
  • the compression spring or Compression springs of the tensioning device 19 is or are individually received in one or more holes of the clamping member 11 and on the one hand at the bottom of its bore and on the other hand supported and biased on the other clamping member 15.
  • the further clamping member 15 could be provided with the bore or the plurality of holes.
  • the clamping members 11 and 15 already store alone the tensioning device 19, so that the clamping device can be completely inserted according to the installed state in a receiving space of the clamping channel.
  • the clamping members 11 and 15 are each perpendicular to a radial R on the axis of rotation of the printing cylinder 1 back and forth movable and are guided in this movement linearly in the clamping channel.
  • the axis of mobility is denoted by T.
  • the radial R extends through the opening of the clamping channel and forms an axis of symmetry for the opening and an immediately adjacent portion extending radially inwardly to at least the ends of the clamping flanges 8a and 8b, ie the clamping channel is in this outer area to the radial R axisymmetric.
  • a leading channel wall forms a mating surface 3 for the clamping member 11 and a trailing channel wall a counter surface 4 for the further clamping member 15.
  • the clamping member 11 forms with the mating surface 3 a clamping gap for the leading clamping flange 8a
  • the further clamping member 15 forms with the mating surface 4 a clamping gap for the trailing clamping flange 8b.
  • the clamping device 19 presses the clamping member 11 against the clamping flange 8a and the further clamping member 15 against the clamping flange 8b. If no clamping flange 8a or 8b is clamped in the respective clamping gap, the clamping device 19 presses the clamping members 11 and 15 against the respective associated counter surface 3 or 4.
  • the clamping flanges 8a and 8b lie flat on the respective associated counter surface 3 or 4.
  • the mating surfaces 3 and 4 are parallel to the radial R.
  • the clamping flanges 8a and 8b are therefore preferably angled accordingly, ie they include even in the unloaded state of the printing cylinder pad 8 or the impression cylinder 8 with the respective plan area of the relevant printing cylinder pad 8 each a congruent slightly smaller angle than 90 °. However, the deviation from the exact right angle is so small that it does not matter for practical purposes. With the same orientation of the mating surfaces 3 and 4, the clamping flanges 8a and 8b could therefore also be angled exactly at 90 °. Likewise, the mating surfaces 3 and 4 could point exactly radially to the axis of rotation of the printing cylinder 1.
  • the drawn direction of rotation of the printing cylinder 1 can be reversed if necessary, so that the clamping flange 8b then the leading and the clamping flange 8a forms the trailing clamping flange.
  • the clamping members 11 and 15 are each designed as rigid in itself, in the embodiment of one-piece components.
  • the clamping member 11 is composed of a guide portion 12 and a right angle from the guide portion 12, in the installed state radially outwardly projecting clamping portion 13 together.
  • the clamping portion 13 is formed in the circumferential direction, ie in the direction of rotation of the printing cylinder 1, slender like a finger, in the embodiment as a plate-shaped, even axially narrow strip, the extent in the axial direction but significantly larger than in the circumferential direction.
  • the further clamping member 15 is composed of a guide portion 16 and a clamping portion 17, for which the above to the clamping member 11 said also applies.
  • the clamping channel expands to form a receiving space and a guide for the guide portions 12 and 16.
  • the guide is, as already stated, a linear guide along the movement axis T. Against movements in the axial direction of the printing cylinder 1, the clamping members 11 and 15 are also secured.
  • the guide is a radially outer guide 5 and a radially inner guide 6, which are each formed as a plane guide surfaces.
  • the outer guide 5 further assumes the function of a support surface on which the clamping member 11 and the clamping member 11 and the further clamping member 15 are supported in a direction parallel to the clamped clamping flanges 8a and 8b directly on the.
  • the delimiting walls of the clamping channel are formed directly by a cylinder body of the impression cylinder 1 and by a filler 7 inserted on the outer periphery.
  • the filler 7 sits snugly in an axial groove on the outer circumference of the cylinder body.
  • the filler 7 forms in particular the receiving space and the guide for the clamping members 11 and 15. Furthermore, the filler 7 forms the leading counter surface 3.
  • the trailing counter surface 4 forms directly the cylinder body.
  • FIG. 3 shows the introduction of the leading clamping flange 8a in the nip.
  • a suction and rolling device with rollers 9 and pneumatic suction cups 10 is used, which is deliverable from a parked position substantially in a direction radially to the axis of rotation of the printing cylinder 1 against the printing cylinder 1 and the printing cylinder 1 can be turned off.
  • the suction and rolling device is located directly above the printing cylinder 1 or arranged to be movable in a substantially tangential direction to the printing cylinder 1 back and forth.
  • the intake and Abstellhub is advantageously very short, for example, only a few inches long.
  • FIG. 3 shows the last step in the introduction of the leading clamping flange 8a.
  • the trailing end was previously already clamped in the clamping channel or at another clamping channel of the printing cylinder 1. Subsequently, the rollers 9, the printing pad 8 rolled over in the direction of its leading end and the impression cylinder pad 8 thereby applied to the cylinder surface.
  • FIG. 4 shows the extraction of the leading clamping flange 8a by means of the suction cups 10.
  • the suction cups 10 are brought as close as possible at the edge of the leading end in suction connection with the pressure pad 8 and the clamping flange 8a then simply pulled out of the nip. Further interventions are not required for the extraction, since it is ensured that only the clamping force of the clamping device 19 predetermined by the construction acts in the clamping gap. In particular, the clamping device does not have to be actuated.
  • a preferred suction and rolling device is from the PCT / EP2005 / 004937 (55 114 XI) known.
  • the PCT / EP2005 / 004937 relates to a so-called semi-automatic, which is described in this application only in combination with a conventional pressure cylinder lining and accordingly also only able to automatically draw a trailing clamping flange corresponding to the clamping flange 8b from the nip, while there conventionally formed leading clamping flange attached by hand and pulled out of the nip.
  • the suction and rolling device can be used both for automatic introduction and for automatic withdrawal of the leading clamping flange 8a and the trailing clamping flange 8b.
  • FIG. 5 shows the pressure cylinder 1 in a plan view of the clamping channel.
  • the printing cylinder 1 is, as usual, divided into a plurality of pressure zones formed axially side by side. Accordingly, the printing cylinder 1 with axially adjacent to each other several printing plates 8 assignable.
  • FIG. 5 are four single-sided printing plates 8 arranged axially next to each other on the printing cylinder 1 distributed over the circumference turn several printing cylinder pads 8 can be arranged one behind the other.
  • the clamping channel extends axially from the one end of the impression cylinder 1 to the other continuously.
  • a Register device for adjusting the side register of the respective impression cylinder pad 8 is arranged.
  • On both sides of the register devices a respective clamping device 11, 15 is arranged.
  • Each clamping flange 8a and 8b is thus clamped by means of two pairs of clamping members 11 or 15.
  • FIG. 6 shows a printing unit arrangement with two printing columns for a continuous web.
  • the arrangement comprises two printing unit bridges, with four printing cylinders 1 and 2 per bridge.
  • the upper bridge is in the shape of a flat V.
  • the lower bridge corresponds to a flat V that is upside down.
  • a so-called H-bridge is formed in this way.
  • the impression cylinders 1 are covered with printing cylinder coverings 8 according to the invention and correspond to the printing cylinder 1 described above.
  • the impression cylinders 2 are transfer cylinders and can in particular be blanket cylinders. They are each covered with at least one transfer cloth, which may be fastened in particular on a lining carrier having a leading end and a trailing end according to the invention.
  • the printing cylinders 1 are each assigned a suction and rolling device 9, 10.
  • FIG. 6 shows how the printing cylinder coverings 8 for all printing cylinders 1 of the H-bridge the respective clamping channel in the same orientation, in the embodiment, each horizontally, fed and can be inserted in this orientation in the respective nip.
  • the automatic change machines carry out the same feed movement in each of the printing cylinders 1 and the same discharge movement during removal. If each of the printing cylinder 1 is assigned its own change machine, all change machines can be formed equal in terms of their movement possibilities.
  • a common change machine is provided on both sides of the web depending on the pair of printing cylinders 1, this may be particularly simple due to the symmetry of the printing cylinder coverings 8, since it is for the two of him to be operated printing cylinder 1 for feeding and discharging the impression cylinder coverings 8 movements in each case in the same direction only needs to perform.
  • a preferred change machine which optionally one of several printing cylinders 1 with Druckzylinderbelägen 8 can operate, is disclosed in German Patent Application no. 10 2004 052 021.
  • magazines 20 are shown, one magazine 20 per printing cylinder 1.
  • the magazines 20 each receive the printing cylinder coverings 8 of the associated printing cylinder 1.
  • the magazines 20 are aligned so that the automatic change the new printing cylinder pad 8 in the feed from the associated magazine 20 and the removed impression cylinder pad 8 in the discharge in the associated Magazine 20 can move.
  • the change machine thus comes with two movements, a movement in the supply and Abhebrides, which preferably points perpendicular to the web, and the supply and Abstellterrorism.
  • FIG. 7 shows a pressure cylinder lining 8 of a second embodiment in a longitudinal section.
  • the printing cylinder pad 8 has at its leading end and its trailing end per a polygonal clamping flange 8a and 8b.
  • the impression cylinder pad 8 is symmetrical with respect to a central transverse axis of the impression cylinder pad 8 extended in the axial direction of the impression cylinder.
  • the clamp flanges 8a and 8b are each angled twice.
  • An inner flange portion forming the edge with the adjoining area of the impression cylinder pad 8 has a length A and an adjoining outer flange portion has a length B, measured on the next inner edge.
  • the length A is 3 mm.
  • the length B is 6 mm.
  • the inner flange portion encloses with the underside of the impression cylinder pad 8 an angle ⁇ of 95 °.
  • the outer flange portion is angled from the inner flange portion toward the bottom of the impression cylinder pad 8 by an angle ⁇ of 15 °.
  • the outer flange portion closes with the underside of the impression cylinder pad 8, the impression cylinder pad being seen in the plan condition, thus the angle ⁇ - ⁇ of 80 °.
  • the included between the two flange portions angle of 165 ° on the one hand is still so dull that the clamping flange 8a and 8b can be introduced as a simple flat clamping flange in the clamping channel and the respective intended nip, on the other hand is by the bending of the respective clamping flange 8a and 8b increases in their rigidity and thereby facilitates insertion into the clamping gap.
  • FIGS. 8 and 9 each show a pressure cylinder lining 8 of the first embodiment, ie, each with a simple planar clamping flange 8a and 8b.
  • the clamping flanges 8a and 8b in the modified embodiment of FIG. 8 each at an angle ⁇ of less than 90 ° and in the modification of FIG. 9 each angled at an angle ⁇ of more than 90 °.
  • the angle ⁇ is 80 ° and in the more obtuse modification of FIG. 9 each 95 °.
  • angles ⁇ are conceivable which deviate from the right angle by up to 15 °.
  • the printing cylinder coverings 8 and the two modifications with respect to their covering ends are exactly symmetrical.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)

Claims (24)

  1. Cylindre d'impression, comprenant :
    a) un canal de serrage (3-6),
    b) dans le canal de serrage (3-6), un organe de serrage (11) et une face d'appui précédente (3) contre laquelle l'organe de serrage (11) est serré élastiquement,
    c) dans le canal de serrage (3-6), un autre organe de serrage (15) et une face d'appui suivante (4), contre laquelle l'autre organe de serrage (15) est serré élastiquement,
    d) dans lequel une bride de serrage antérieure (8a) d'un revêtement de cylindre d'impression (8), de forme stable et pliée à peu près perpendiculairement, peut être serrée entre l'organe de serrage (11) et la face d'appui précédente (3), et
    e) dans lequel une bride de serrage postérieure (8b) du même ou d'un autre revêtement de cylindre d'impression (8), de forme stable et pliée à peu près perpendiculairement, peut être serrée entre l'autre organe de serrage (15) et la face d'appui suivante (4),
    caractérisé en ce que
    f) les organes de serrage (11, 15) sont respectivement déplaçables en mouvement de va-et-vient perpendiculairement à une radiale (R) par rapport à l'axe de rotation du cylindre d'impression (1) et sont guidés linéairement dans le canal de serrage (3-6) pendant ce mouvement.
  2. Cylindre d'impression selon la revendication précédente, caractérisé en ce que le centre de gravité de l'organe de serrage (11) est déplaçable de façon non parallèle à la bride de serrage (8a).
  3. Cylindre d'impression selon l'une quelconque des revendications précédentes, comportant un guidage (5, 6), qui guide en mouvement l'organe de serrage (11) au moins à peu près perpendiculairement à une radiale (R), et qui s'étend depuis l'axe de rotation du cylindre d'impression à travers une ouverture du canal de serrage.
  4. Cylindre d'impression selon l'une quelconque des revendications précédentes, comportant un guidage (5, 6), qui guide l'organe de serrage (11) linéairement.
  5. Cylindre d'impression selon l'une quelconque des revendications précédentes, caractérisé en ce que l'organe de serrage (11) et la face d'appui précédente (3) serrent la bride de serrage (8a, 8b) sans aucune force de flexion.
  6. Cylindre d'impression selon l'une quelconque des revendications précédentes, caractérisé en ce que la face d'appui précédente (3) est formée par une paroi latérale plane du canal de serrage (3-6), qui est au moins à peu près parallèle à une radiale (R) par rapport à l'axe de rotation du cylindre d'impression (2).
  7. Cylindre d'impression selon l'une quelconque des revendications précédentes, caractérisé en ce que la bride de serrage antérieure (8a) est plane au moins dans la région qui présente un contact de serrage avec l'organe de serrage (11).
  8. Cylindre d'impression selon l'une quelconque des revendications précédentes, caractérisé en ce que l'organe de serrage (11) présente une partie de guidage (12) et une partie de serrage (13) s'étendant en forme de doigt en section transversale à partir de la partie de guidage (12) en direction d'une ouverture du canal de serrage (3-6), et en ce qu'un guidage (5, 6) est formé dans le canal de serrage (3-6) et guide la partie de guidage (12) dans une direction transversale à la bride de serrage (8a), de telle manière que la partie de serrage (13) soit mobile en direction de la face d'appui précédente (3) et dans la direction opposée à la face d'appui précédente (3).
  9. Cylindre d'impression selon l'une quelconque des revendications précédentes, comprenant un dispositif de serrage (19), qui exerce sur l'organe de serrage (11) une force élastique, qui presse l'organe de serrage (11) contre la bride de serrage (8a).
  10. Cylindre d'impression selon l'une quelconque des revendications précédentes, caractérisé en ce que la bride de serrage postérieure (8b) est plane au moins dans la région qui présente un contact de serrage avec un organe de serrage (15) dans le même ou dans un autre canal de serrage (3-6).
  11. Cylindre d'impression selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de serrage (19) prend appui dans une direction sur l'organe de serrage (11) et dans la direction opposée sur l'autre organe de serrage (15).
  12. Cylindre d'impression selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de serrage (19) est disposé entre les deux organes de serrage (11, 15).
  13. Cylindre d'impression selon l'une quelconque des revendications précédentes, caractérisé en ce que les organes de serrage (11, 15) se guident linéairement l'un sur l'autre.
  14. Cylindre d'impression selon l'une quelconque des revendications précédentes, caractérisé en ce que les organes de serrage (11, 15) présentent chacun au moins une partie de serrage (13, 17) touchant la bride de serrage associée (8a, 8b), et en ce que ladite au moins une partie de serrage (13) de l'organe de serrage (11) et ladite au moins une partie de serrage (17) de l'autre organe de serrage (15) sont disposées l'une à côté de l'autre en alignement avec l'axe du cylindre d'impression (2) et se chevauchent au moins partiellement l'une l'autre en direction périphérique.
  15. Cylindre d'impression selon l'une quelconque des revendications précédentes, dans lequel un revêtement de cylindre d'impression est disposé à la périphérie du cylindre d'impression, la bride de serrage antérieure (8a) du revêtement de cylindre d'impression (8) est serrée entre l'organe de serrage (11) et la face d'appui précédente (3), et la bride de serrage postérieure (8b) du même ou d'un autre revêtement de cylindre d'impression (8) est serrée entre l'autre organe de serrage (15) et la face d'appui suivante (4) de la bride de serrage postérieure (8b) du même ou d'un autre revêtement de cylindre d'impression (8), dans lequel le revêtement de cylindre d'impression présente une bride de serrage antérieure pliée de forme stable (8a) et une bride de serrage postérieure pliée de forme stable (8b), et les brides de serrage (8a, 8b) sont formées de manière identique et forment un angle au moins à peu près droit (α; α-β) avec une région adjacente respective du revêtement de cylindre d'impression (8), dans lequel l'angle (α; α-β) est mesuré entre la région adjacente respective du revêtement de cylindre d'impression (8) et une tangente à l'extrémité libre de la bride de serrage respective (8a, 8b).
  16. Cylindre d'impression selon la revendication précédente 1, caractérisé en ce que l'angle (α; α-β) vaut au moins 75° et au plus 105°.
  17. Cylindre d'impression selon l'une quelconque des revendications 15 et 16, caractérisé en ce que les brides de serrage (8a, 8b) sont de forme ronde ou de préférence polygonale par rapport à la région adjacente respective du revêtement de cylindre d'impression (8) et présentent partout une courbure concave.
  18. Cylindre d'impression selon l'une quelconque des revendications 15 à 17, caractérisé en ce que les brides de serrage (8a, 8b) sont pliées plusieurs fois, de préférence deux fois, en direction d'une face inférieure du revêtement de cylindre d'impression (8).
  19. Cylindre d'impression selon la revendication précédente, caractérisé en ce que les brides de serrage (8a, 8b) présentent chacune une partie de bride intérieure, qui forme une arête avec la région adjacente respective du revêtement de cylindre d'impression (8) et forme un angle d'au moins 80° et d'au plus 110°.
  20. Cylindre d'impression selon la revendication précédente, caractérisé en ce que les brides de serrage (8a, 8b) présentent chacune une deuxième partie de bride, qui est pliée d'au moins 5° et d'au plus 20° par rapport à la partie de bride intérieure respective.
  21. Cylindre d'impression selon l'une quelconque des revendications 1 à 14, dans lequel un revêtement de cylindre d'impression est disposé à la périphérie du cylindre d'impression, la bride de serrage antérieure (8a) du revêtement de cylindre d'impression (8) est serrée entre l'organe de serrage (11) et la face d'appui précédente (3), et la bride de serrage postérieure (8b) du même ou d'un autre revêtement de cylindre d'impression (8) est serrée entre l'autre organe de serrage (15) et la face d'appui suivante (4), dans lequel le revêtement de cylindre d'impression présente à une extrémité antérieure une bride de serrage antérieure (8a) plane de forme stable et pliée au moins à peu près perpendiculairement et à une extrémité postérieure une bride de serrage postérieure (8b) plane, de forme stable et pliée au moins à peu près perpendiculairement ou en angle obtus.
  22. Cylindre d'impression selon la revendication précédente, caractérisé en ce que la bride de serrage antérieure (8a) et la bride de serrage postérieure (8b) sont formées de manière identique.
  23. Cylindre d'impression selon l'une quelconque des revendications 15 à 22, caractérisé en ce que la bride de serrage antérieure (8a) et la bride de serrage postérieure (8b) présentent chacune une longueur (A; A, B) de 15 mm au maximum, mesurée sur une arête autour de laquelle la bride de serrage respective (8a, 8b) est pliée.
  24. Cylindre d'impression (2) selon l'une quelconque des revendications 1 à 14, dans lequel un revêtement de cylindre d'impression est disposé à la périphérie du cylindre d'impression, la bride de serrage antérieure (8a) du revêtement de cylindre d'impression (8) est serrée entre l'organe de serrage (11) et la face d'appui précédente (3), et la bride de serrage postérieure (8b) du même ou d'un autre revêtement de cylindre d'impression (8) est serrée entre l'autre organe de serrage (15) et la face d'appui suivante (4), dans lequel le revêtement de cylindre d'impression présente à une extrémité antérieure et à une extrémité postérieure chaque fois une bride de serrage pliée, plane et de forme stable (8a, 8b) pour un serrage dans un seul ou chacune dans un canal de serrage (3-6) du cylindre d'impression (2), dans lequel la bride de serrage antérieure (8a) est pliée au moins à peu près perpendiculairement.
EP06741657A 2005-06-23 2006-06-16 Revetement de cylindre d'impression, combinaison d'un cylindre d'impression et d'un revetement de cylindre d'impression, et cylindre d'impression comprenant un revetement de cylindre d'impression fixe par serrage Not-in-force EP1896260B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005029167A DE102005029167A1 (de) 2005-06-23 2005-06-23 Druckzylinderbelag, Kombination aus Druckzylinder und Druckzylinderbelag sowie Druckzylinder mit klemmend befestigtem Druckzylinderbelag
PCT/CH2006/000332 WO2006136047A2 (fr) 2005-06-23 2006-06-16 Revetement de cylindre d'impression, combinaison d'un cylindre d'impression et d'un revetement de cylindre d'impression, et cylindre d'impression comprenant un revetement de cylindre d'impression fixe par serrage

Publications (2)

Publication Number Publication Date
EP1896260A2 EP1896260A2 (fr) 2008-03-12
EP1896260B1 true EP1896260B1 (fr) 2010-01-06

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EP06741657A Not-in-force EP1896260B1 (fr) 2005-06-23 2006-06-16 Revetement de cylindre d'impression, combinaison d'un cylindre d'impression et d'un revetement de cylindre d'impression, et cylindre d'impression comprenant un revetement de cylindre d'impression fixe par serrage

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Country Link
EP (1) EP1896260B1 (fr)
AT (1) ATE454268T1 (fr)
DE (2) DE102005029167A1 (fr)
WO (1) WO2006136047A2 (fr)

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DE102006032263B3 (de) * 2006-07-12 2008-01-31 Maschinenfabrik Wifag Klemmvorrichtung mit überlappenden Klemmmitteln
DE102006050908A1 (de) * 2006-10-28 2008-05-15 Man Roland Druckmaschinen Ag Druckplatte sowie Gummituchplatte für eine Druckmaschine
DE102007028955B3 (de) * 2007-06-22 2008-08-21 Koenig & Bauer Aktiengesellschaft Verfahren zum Betreiben einer Druckeinheit mit mindestens einem Druckwerk
WO2008064960A1 (fr) 2006-12-01 2008-06-05 Koenig & Bauer Aktiengesellschaft Procédé d'exploitation d'une unité d'impression dotée d'au moins un mécanisme d'impression et mécanisme d'impression destiné à la mise en œuvre du procédé
DE202006020717U1 (de) 2006-12-01 2009-08-27 Koenig & Bauer Aktiengesellschaft Neun-Zylinder_Satellitendruckeinheit
EP1927468B1 (fr) 2006-12-01 2011-12-07 Koenig & Bauer Aktiengesellschaft Unités d'imprimante satellite comprenant neuf cylindres
DE102006056831B4 (de) * 2006-12-01 2008-10-02 Koenig & Bauer Aktiengesellschaft Satellitendruckeinheit
DE102006056830B4 (de) * 2006-12-01 2008-08-14 Koenig & Bauer Aktiengesellschaft Verfahren zum Betreiben einer Neun-Zylinder-Satellitendruckeinheit
EP1938985A3 (fr) 2006-12-01 2011-11-16 Koenig & Bauer Aktiengesellschaft Plaque d'impression pour un cylindre à plaque ou plaques d'impression pour cylindres à plaques
DE102007005338B3 (de) * 2007-02-02 2008-04-17 Maschinenfabrik Wifag Rollenrotationsdruckmaschine mit einem Belagspeicher
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EP2047994A1 (fr) 2007-10-10 2009-04-15 WIFAG Maschinenfabrik AG Cylindre d'impression avec un canal de serrage pour une plaque d'impression
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Publication number Publication date
DE502006005859D1 (de) 2010-02-25
EP1896260A2 (fr) 2008-03-12
DE102005029167A1 (de) 2006-12-28
WO2006136047A3 (fr) 2007-03-15
ATE454268T1 (de) 2010-01-15
WO2006136047A2 (fr) 2006-12-28

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