EP2047993B1 - Cylindre d'impression supportant par friction un dispositif de registre - Google Patents

Cylindre d'impression supportant par friction un dispositif de registre Download PDF

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Publication number
EP2047993B1
EP2047993B1 EP20070118239 EP07118239A EP2047993B1 EP 2047993 B1 EP2047993 B1 EP 2047993B1 EP 20070118239 EP20070118239 EP 20070118239 EP 07118239 A EP07118239 A EP 07118239A EP 2047993 B1 EP2047993 B1 EP 2047993B1
Authority
EP
European Patent Office
Prior art keywords
clamping
printing cylinder
tool
register
register device
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
EP20070118239
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German (de)
English (en)
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EP2047993A1 (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
Original Assignee
Wifag Maschinenfabrik AG
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Publication date
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Priority to EP20070118239 priority Critical patent/EP2047993B1/fr
Publication of EP2047993A1 publication Critical patent/EP2047993A1/fr
Application granted granted Critical
Publication of EP2047993B1 publication Critical patent/EP2047993B1/fr
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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
    • 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
    • B41F27/1262—Devices for attaching printing elements or formes to supports for attaching flexible printing formes without tensioning means
    • B41F27/1268—Devices for attaching printing elements or formes to supports for attaching flexible printing formes without tensioning means by self-locking or snap-on means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
    • B41P2227/10—Attaching several printing plates on one cylinder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
    • B41P2227/40—Adjusting means for printing plates on the cylinder
    • B41P2227/41—Adjusting means for printing plates on the cylinder axially

Definitions

  • the invention relates to a printing cylinder with a register device for adjusting the side register of a auflegbaren on an outer periphery of the printing cylinder pressure pad.
  • the printing cylinder is part of a rotary printing press or intended for installation in a rotary printing machine. It is preferably a printing cylinder for a web-fed printing press, particularly preferably for an offset printing press, for example a newspaper offset printing press.
  • Printing cylinders have register means which, in engagement with ends of printing pads, determine the position of the respective printing pad with respect to the longitudinal direction of the printing cylinder.
  • the register devices are axially movable relative to a cylinder body of the printing cylinder, on the outer circumference of the pressure pads are wound to compensate for on the way of a web to be printed, for example, a variable due to different transverse strains web width. Web width variations may occur especially in wet offset printing, a preferred printing process of the invention, due to dampening solution pickup and the associated FAN-OUTS. For example, a web to be printed in multicolor printing widens from printing site to printing site.
  • the printing plates of the printing forme cylinder are arranged from point to location a little further axially outward.
  • the printing plate cylinders which are otherwise the same from printing point to printing point, accordingly have axially adjustable register devices.
  • the register devices are received in a recess incorporated on the cylinder body on the outer circumference and supported axially movable by means of a filler inserted there.
  • the axial adjustment is usually accomplished by means of an eccentric mechanism.
  • the eccentric mechanism may be part of the register device, namely an axially movable register body, or rotatably mounted in the printing cylinder.
  • Such register devices are complex, increase the cost of manufacturing the printing cylinder. They require installation space and thereby contribute to the enlargement of the cross section of the recess to be provided in the cylinder body. The latter reduces the flexural rigidity of the printing cylinder, which can be problematic especially for slim cylinders.
  • the WO 01/83215 A1 discloses an apparatus for registering an elevator on a cylinder.
  • adjustable register pins are clamped between a carrier strip and a terminal strip in the longitudinal direction of a cylinder.
  • the clamping is generated with a designed as a spindle actuating means.
  • a plate cylinder has a register pin which is adjustable in the longitudinal direction of the plate cylinder and is clamped with a screw which is arranged on the register pin.
  • the DE 199 20 132 A1 shows a side register means of a forme cylinder, in which a register pin is easy and adjustable with little time.
  • the invention relates to a printing cylinder, which has on an outer periphery an axially extending channel with a channel opening, a register disposed axially adjustable register means, a first clamping means and a second clamping means, between which the register means is clamped and fixed in each case a frictional engagement.
  • the first clamping means has a first clamping surface and the second clamping means a second clamping surface, which face each other via the clamped therebetween, with each of these clamping surfaces in frictional engagement register device.
  • the two clamping surfaces are parallel to each other.
  • the second clamping means on a clamping surface, which is movable in the direction of the first clamping means and its clamping surface and of the first clamping means and the clamping surface thereof, wherein the second clamping means is supported on a side facing away from the second clamping surface side on the printing cylinder , so that the described mobility of the second clamping surface is obtained.
  • the two clamping surfaces are thus produced in particular not by means of a claimed for the fixation of the register device on train screw or a similar fastener that the register device protrudes, but of clamping means and clamping surfaces, one for the fixation in the desired Insert axial position required clamping force from the outside into the register device.
  • a storage for an axially adjustable and within its adjustment axially fixable register means is provided which does not require a form-fitting transversely to the axial engaging engagement means on the side of the printing cylinder and on the side of the register means.
  • a positive engagement is made only for the adjustment of the axial position and preferably only by a tool during the adjustment process. This simplifies the design and reduces the volume of the register device and corresponding to the space required for the storage of the register device within the channel.
  • the register device is connected in preferred embodiments with at least one of the clamping means, preferably two clamping means, only frictionally engaged.
  • the movable second clamping surface can be formed directly by a spring element acting as a pressing device.
  • the second clamping means and the second clamping surface are formed by a pressure piece which can be moved back and forth in the direction of the first clamping surface and away from it.
  • a pressure piece is preferably guided linearly movable by the printing cylinder, preferably secured against rotation.
  • the pressure piece in turn is supported by a pressure device, preferably a spring member, on the pressure cylinder.
  • the spring member may in particular be a mechanical spring, but alternatively, for example, also a pneumatic spring member. However, a mechanical spring greatly simplifies the construction.
  • the pressing device advantageously comprises a holding member on which the spring member is supported.
  • the spring member may be clamped between the clamping means formed as a pressure piece and the holding member.
  • the holding member is preferably mounted.
  • the spring member is supported on the pressure piece in the spring opposite side.
  • the holding member may be movable in the direction of the spring force relative to the pressure cylinder and the clamping means back and forth and preferably fixed in any position. Preferably, it is movable in a screw engagement with the impression cylinder.
  • the holding member can also be formed by a wall of the printing cylinder in a firmly integrated form. An assembled holding member facilitates However, the installation of the pressing device.
  • the holding member may guide the second clamping means to and fro.
  • the first clamping surface can in particular be formed by a channel wall of the printing cylinder.
  • the first clamping surface is fixed in preferred embodiments relative to the printing cylinder and not yielding.
  • the pressure cylinder comprises in preferred embodiments, a cylinder body which forms a major part of the outer circumference of the impression cylinder and having at its outer periphery an axially extending recess in which a filler is arranged.
  • the filler supports the register device.
  • a plurality of register devices preferably of the same type, are arranged in the channel spaced apart from one another in the longitudinal direction, preferably exactly one register device for one of the pressure coatings, which can be axially pulled next to one another on the printing cylinder. Strictly speaking, however, this assignment applies only to printing surfaces of the same type, i. substantially the same axial width.
  • printing pads of different widths can be mounted on the printing cylinder, for example, simply wide printing pads and double-width printing pads (Panoramformat), preferably for the single-width printing pads each register means and for the double-width printing pads each have a further register means provided only for this panoramic saw and stored in accordance with the invention ,
  • the filler piece When storing the register device or the plurality of register devices by means of a filler piece, the filler piece in preferred embodiments forms the first clamping surface, wherein the first clamping surface is advantageously a stationary, unyielding filler wall with respect to the filler.
  • the filler piece preferably supports the second clamping means, at least one part of the second clamping means comprising the second clamping face, in a movable manner. In the case of a pressure piece, this is preferably guided by the holding member or the filler back and forth movable. Said holding member is preferably also held on the filler.
  • the filler and the register device or devices form in advantageous embodiments, a preassembled mounting unit, which is used as a whole in the recess of the cylinder body.
  • the register device is preferably mounted in an axially extending recess of the filler and held frictionally.
  • the recess has opposing walls facing one another, one of which forms the first clamping surface and the other has a passage for the second clamping means, so that the second clamping surface relative to the passage of the wall of the filler and preferably orthogonal to the first clamping surface and advantageously also to this wall is movable back and forth.
  • the register device has, in preferred embodiments, a support section for its own storage and a register section which points at an angle to the support section.
  • the register device can be advantageously formed overall as an angle piece with the two said sections as legs of the angle piece.
  • the support portion protrudes between the first and second clamping surfaces, and the register portion projects toward the channel opening.
  • the support portion preferably projects into said recess of the filler.
  • the register device has an oblong hole which is arranged so that a tool which can be inserted through the channel opening into the channel for the axial adjustment can engage in the oblong hole. After adjusting the axial position, the tool is removed again, so that the slot is then free again.
  • the register device may advantageously be a whole as a unit movable register body without moving fixtures or attachments.
  • the register body can be joined or formed in one piece from a plurality of immovable, fixedly connected, for example welded together parts.
  • a tool for the axial adjustment of the register device can be formed in particular as an eccentric, with a first tool section having a tool axis of rotation determined, and a second tool portion, with which the tool cooperates with the form-fitting register means to effect the adjustment.
  • the two tool sections are arranged eccentrically with respect to the tool axis of rotation relative to each other. One of the tool sections projects beyond the other along the tool axis of rotation.
  • the projecting tool section engages in the adjustment in the slot of the register device.
  • the projecting tool portion can pass through the slot and form in a positive engagement radially inwardly of the register means with the impression cylinder the tool rotation axis about which the other to this rotation axis eccentric tool portion for the adjustment is pivoted.
  • the tool is more preferably between the channel opening and the register means with the impression cylinder in a positive engagement, which determines the stationary with respect to the impression cylinder during the adjustment tool rotation axis.
  • the other, projecting over this tool axis of rotation defining portion of the tool section engages in the slot of the register device.
  • the elongated hole of the register means extends in the circumferential direction of the impression cylinder, so that the register device is axially displaced therefrom during the pivoting of the engaging tool section.
  • the elongated hole extends in the axial direction, and the tool section, which is pivoted about the tool rotation axis during adjustment, is in another position, advantageously between the channel opening and the slot, in the form-fitting engagement with the register device required for the adjustment ,
  • the tool rotation axis is formed by a positive engagement of the tool and the pressure cylinder between the channel opening and the slot of the register device, is on a channel wall which extends from the register means to the channel opening and the one in the circumferential direction another channel wall opposite, a form-fitting with the tool rotation axis determining tool portion cooperating recess provided by which the tool is inserted into the slot of the register means in the channel.
  • a recess may advantageously be formed on the filler.
  • the recess is at the tool rotation axis shaped shaped tool section adapted, so that in a positive engagement of this tool section in the recess, the tool rotation axis is axially fixed.
  • FIG. 1 shows a printing cylinder in a view and partially in section along a rotation axis L of the cylinder.
  • the printing cylinder has a cylinder body 1, left and right each projecting from the cylinder body 1 cylinder pin for the pivot bearing and an inserted into the cylinder body 1 on the outer periphery filler 2 to form a clamping channel for printing pads.
  • the cylinder body 1 has measured between the cylinder pin an axial width corresponding to four printed pages of a printed product, which can be produced by means of a rotary printing machine, which includes the printing cylinder 1, 2 or for which the printing cylinder is provided.
  • the printed products may in particular be newspaper copies.
  • the printing cylinder is a printing form cylinder, the pressure pads according to printing forms. A total of four pressure pads can be mounted on the outer circumference of the printing cylinder, that is, the pressure cylinder has a circumference corresponding to a pressure side.
  • the filler 2 is arranged in a recess which is incorporated on the outer periphery in the cylinder body 1.
  • the recess and the filler 2 extend over the entire axial length of the cylinder body. 1
  • FIG. 1 shows only part of the length of the Cylinder body 1, which corresponds approximately to the width of a print page and, accordingly, a one-page wide printing pad.
  • said four easy wide pressure pads aufziehbar or alternatively two double-wide pressure pads in the so-called panoramic format.
  • FIG. 2 shows the filler 2 alone in the length corresponding to a pressure side portion.
  • the filler piece 2 forms a bearing device for a clamping device for clamping the ends of the pressure pads and also for a register device for adjusting the side register of the pressure pads. All clamping body of the clamping device and the register body of the register device are held on the filling piece 2.
  • the filler 2 forms with the clamping device and the register means a mounting unit by the components of the clamping device and register device are mounted on the filler 2 and the filler 2 is inserted with the pre-assembled components of the clamping device and register device in the recess of the cylinder body 1 and secured therein.
  • the filler 2 is fitted in a form-fitting manner in the recess of the cylinder body 1 and fastened by means of fastening means, fastening screws in the embodiment.
  • the attachment is in the FIGS. 1 and 5 recognizable.
  • the clamping device comprises for each of the pressure pads a plurality of first clamping body 4 and a plurality of second clamping body 4.
  • the first clamping body 4 are for clamping a first end of the respective pressure pad and the second clamping body 4 are provided for the other, second end of the same pressure pad.
  • the clamping body 4 are arranged in recesses 2b of the filler 2.
  • the recesses 2b are at an underside of the filler 2, which faces the axis of rotation L of the printing cylinder 1, 2, incorporated and open at the bottom.
  • the recesses 2b take in each case two clamping bodies 4, namely in each case a first clamping body 4 and in each case a second clamping body 4.
  • each two clamping body 4 are arranged axially close to each other.
  • the recesses 2b have axially measured in each case a width which is slightly larger than the sum of the axial widths of the respectively received clamping body. 4
  • a register device 9 is provided per printing pad, each in the form of a register body.
  • the Registering devices 9 are mounted separately from each other individually axially adjustable, wherein the storage is realized as already mentioned on the filling piece 2.
  • the filler 2 has for each one of the register means 9, a further recess 2c, in which the respective register means 9 is held purely by friction only by clamping.
  • the register devices 9 have no engagement means which cooperate with the filler 2 or the cylinder body 1 in adjusting the axial position of the respective register device 9. Accordingly, the register means 9 do not project any shear stressable engaging means into the filler 2 or the cylinder body 1 nor any such engagement means from the filler 2 or the cylinder body 1 into any of the register means 9.
  • the register means 9 are axially moved by means of an externally engaging tool adjusted.
  • FIG. 3 shows in cross section BB of FIG. 1 one of the first clamping body 4, and FIG. 4 shows in cross-section CC one of the second clamping body 4, which are each arranged in pairs next to one another in one of the recesses 2b.
  • the cylinder body 1 and the filler 2 form the clamping channel for the pressure pads in a particularly space-saving manner.
  • a first end of a pressure pad 3 is clamped in a clamping gap formed by the cylinder body 1 and the first clamping body 4, and in FIG. 4 the other, second end of the same pressure pad 3 is held in a clamping manner in a second clamping gap formed between the filling piece 2 and the second clamping body 4.
  • the clamping channel has on the outer circumference of the printing cylinder 1, 2 a channel opening, along which the outer circumference of the printing cylinder 1, 2 passes over in each case an edge with a small radius of curvature in adjoining the respective edge channel walls 1a and 2a, which faces in the circumferential direction are opposite.
  • the cylinder body 1 forms the channel wall 1a and the filler 2, the channel wall 2a.
  • the channel wall 1a forms a counter surface for the first clamping body 4 in the clamping gap, while the channel wall 2a forms such a counter surface in the clamping gap for the second clamping body 4.
  • the clamping channel is from the channel opening up to and including the two clamping gaps over the entire axial length in each case symmetrically to a through the clamping channel and the channel opening extending symmetry plane.
  • the Channel walls 1a and 2a extend parallel to the plane of symmetry containing the radial Rs.
  • the channel walls 1a and 2a therefore extend in a good approximation orthogonal to a tangent at the respective edge to the outer circumference of the printing cylinder tangent.
  • the clamped to the ends of the pressure pad 3 are shaped in a good approximation corresponding to each as a right-angled Abbug.
  • Printing pads 3 of this type are used for example in the DE 10 2005 029 167 A1 disclosed in this regard.
  • the turn at the leading end or the turn at the trailing end of the pressure pad 3 as shown in the exemplary embodiment simply plan or in an projecting between the channel walls 1a and 2a section again be angled, for example in the direction of the outer periphery of the impression cylinder 1, 2nd resting region of the pressure pad 3 or away from it in the direction of the opposite channel wall 2a or 1a facing.
  • By repeated bending within at least one of the two turns of the pressure pad 3 can be clamped by clamping by means of the clamping body 4 of the pressure pad 3 in the circumferential direction.
  • Each of the sprags 4 is assigned its own pressing device 7, which is formed as a spring member, in the embodiment as a mechanical spring, to press the respective associated clamping body 4 against the channel wall 1a or the channel wall 2a and in the nip the required for the clamping of Drucklagagendes To generate clamping force.
  • the pressing means 7 are arranged in the form of coil springs and the effect as compression springs.
  • the pressing devices 7 are based on the filling piece 2. They are accommodated in a respective cavity of the filler 2 and act in the case the second clamping body 4 in the region of the recess 2b on the respective associated clamping body. 4
  • the clamping bodies 4 are individually positioned and held on the filling piece 2, namely in each case by means of a positioning element 8.
  • the positioning elements 8 are fixedly connected to the filling piece 2, screwed in the exemplary embodiment, and each protrude into the recess 2b with a shank portion. They pass through in the region of the recess 2b the respective clamping body 4, which has a passage at the appropriate point.
  • the passages of the clamping body 4 have in comparison with the passing shaft portion to an excess, so that the clamping body 4 is positioned and held on the filler 2 by means of the positioning elements 8, the necessary for introducing the ends of the respective pressure pad 3 Abstell- and Zustellierien of the channel wall 1a or 2a away and on this but not hindered.
  • the recesses 2b of the filler 2 is a wall 1b of the cylinder body 1 facing.
  • the wall 1b forms a bottom of the incorporated in the cylinder body 1 for the filler 2 recess. In the embodiment contacted the filler 2 axially left and right of the recesses 2b each of these wall 1b.
  • the wall 1b bounds the recesses 2b.
  • the wall 1b is flat and smooth over the entire axial length of the recess of the cylinder body 1 and over its entire, measured in the circumferential direction of the impression cylinder 1, 2 width.
  • the channel wall 1a extends orthogonally to the wall 1b. In the region of the recesses 2b, the wall 1b also forms a channel wall.
  • the channel wall 1a is once set down between the bottom of the clamping channel and the channel opening by widening in the form of a small step once in their vicinity near the channel opening, substantially to the thickness of the end to be clamped pressure pad 3.
  • the channel walls 1a and 2a Furthermore, each have in the region of that clamping body 4, with the respective channel wall 1a or 2a forms no nip, a recess into which the respective clamping body 4 can escape during its Abstellieri, as better in the FIGS. 16 and 17 is recognizable.
  • the clamping body 4 each have a support portion 5 and an angle to the support portion 5 facing clamping portion 6.
  • the clamping portion 6 protrudes like a finger from the support portion 5 towards the channel opening too.
  • the clamping body 4 each form an angle profile.
  • the support section 5 protrudes into the recess 2b and is received therein with at least a predominant volume fraction.
  • the clamping body 4 have at their side facing away from the channel opening lower sides in each case in cross-section on a bulging bulging rounding, with which they are supported on the cylinder body wall 1b and form a tilting axis for the clamping body 4 in contact with the wall 1b.
  • the tilting axis is at least substantially radially below the clamping gap of the clamping body 4, that is formed at least substantially at the same rotational angular position as the clamping gap, based on the axis of rotation L of the printing cylinder 1, 2.
  • the clamping body 4 are rigid tilting pieces.
  • the pressing means 7 are radially arranged approximately at the level of the clamping gap on the clamping gap opposite side of the clamping portion 6 acting.
  • the second clamping bodies 4 FIG. 4
  • the two turns of the pressure pad 3 are provided in the region of the respective non-clamping terminal body 4 with a recess and accordingly of the non-clamping clamping bodies 4 and in the case of the first clamping body 4 and the pressing means 7 free.
  • the pressing devices 7 of the second clamping body 4 act on the support section 5 in the region of the recesses 2b and on the respective clamping body 4 via a lever arm extending up to the tilting axis.
  • the clamping body 4 form with that channel wall 1a or 2a, with which they form the nip, an insertion funnel for clamping the Druckbelags 3.
  • the clamping portions 6 are tapered to form the insertion funnel of the channel wall 1a or 2a, with which they the nip form, in the direction of the opposite channel wall radially outward.
  • FIG. 5 shows in the cross section AA of FIG. 1 a portion of the filler 2 adjacent to the recesses 2b and 2c.
  • the filler has 2 at all located within the recess sides contact with the Recess bounding walls of the cylinder body 1 in order to best Schwarzsteifen the cylinder body 1 in the region of the recess.
  • the filler 2 is in these cross sections, wherein in FIG.
  • a cross section is shown with a fastening element for fastening the filler 2 on the cylinder body 1, substantially cuboid, in the embodiment, it is in cross section in the first approximation square.
  • the recess has two mutually parallel side walls which extend from the bottom of the recess at right angles and parallel to the plane of symmetry of the clamping gap formed between the channel walls 1a and 2a up to the outer surface of the cylinder body 1.
  • Such a cross section is particularly easy to manufacture and weakens the cylinder body 1 in its decisive for bending stiffness cross-sectional area near the outer periphery only minimally.
  • FIG. 6 shows the clamping channel in a cross section with one of the register devices 9.
  • the register device 9 has a support portion 10 and an angularly projecting from the support portion 10 register portion 11.
  • the support portion 10 is received in one of the recesses 2c of the filler 2 and frictionally clamped between a first clamping surface 2d and a second clamping surface 13a and held purely frictionally engaged.
  • the clamping surface 2d is a solid, non-compliant wall of the filler 2, which forms a first clamping means for the register device 9 in this sense.
  • the clamping surface 13a is formed by a second clamping means 13 acting as a pressure piece.
  • the filler 2 supports the clamping means 13 in the direction of the clamping surface 2d and from this way back and forth.
  • the clamping means 13 is in a passage of the filler 2, which leads into the recess 2c and is directed to the clamping surface 2d, guided linearly and preferably secured against rotation.
  • the clamping means 13 is plate-shaped and has on its clamping surface 2d side facing the clamping surface 13a.
  • the clamping means 13 is supported by a spring member 14 and a holding member 15 on the filler piece 2.
  • the holding member 15 is arranged in the same passage as the clamping means 13 and in the direction of the mobility of the clamping means 13 to a stop of the filler 2 back and forth adjustable.
  • the spring member 14 is supported in one spring direction on the holding member 15 and in the other Direction of the clamping means 13 from.
  • the spring member 14 is a mechanical compression spring, the geometry of a coil spring.
  • the clamping means 13 has a clamping plate 13a forming plate-shaped plate and a protruding from this pin, with which it projects into a passage of the holding member 15.
  • the holding member 15 leads the clamping means 13 in the region of the pin to and fro.
  • the clamping surface 2d is a radially outer clamping surface
  • the clamping means 13 forms the clamping surface 13a as a radially inner clamping surface.
  • the holding member 15 is screwed in the passage of the filler piece 2 against the stop.
  • the frictional engagement between the register means 9 and the clamping means 2 and 13 is designed so that d. H. according to spring tension, size of the clamping surfaces 2d and 13a and their coefficients of friction that the register means 9 may be axially displaced in the clamping engagement by means of a tool and thereby the side register of an associated pressure pad is specified, the once set axial position but under all conceivable conditions in the operation of the Pressure cylinder 1, 2 is maintained.
  • the register device 9 is formed as an angle piece, with the protruding into the recess 2c support portion 10 and the angle projecting therefrom in the direction of the channel opening register section 11. If the impression cylinder 1, 2 occupied with pressure pads, the register section 11 engages in a register recess of the Abbug arranged on the corresponding axial height pressure pads and thus determines its axial position, ie its side register.
  • the filler piece 2 has a local recess 2e in its channel wall 2a which faces the opposite channel wall 1a and forms a passage up to a slot 12 in the support section 10 of the register device 9.
  • a tool can be brought through the recess 2e into engagement with the register device 9, namely with its slot 12.
  • FIGS. 7 to 9 show the register device 9 in two views and in a plan view of the slot 12 containing part.
  • the slot 12 extends with its longitudinal axis in the circumferential direction of the printing cylinder 1, 2nd
  • FIGS. 10 and 11 show a tool 16 with which the axial position of the register device 9 is adjustable.
  • the tool 16 comprises a first tool section 17 and a second tool section 18.
  • the tool section 17 has a central longitudinal axis W, which forms an axis of rotation of the tool 16 during the adjustment of the register device 9.
  • the tool portion 18 is eccentric with respect to this tool rotation axis W and extends the tool portion 17 along the tool rotation axis W.
  • the tool portion 18 forms an eccentric axis Z of the tool 16 eccentric to the tool rotation axis W.
  • Both portions 17 and 18 are circular cylindrical.
  • FIGS. 12 to 14 The tool 16 is inserted with the tool portion 18 first into the recess 2e of the filler until the tool portion 18 projects into the slot 12 ,
  • the diameter of the tool section 18 and the width of the slot 12 are precisely matched to each other, so that the tool section 18 just fits into the slot 12.
  • the width of the recess 2e and the diameter of the tool portion 17 are precisely matched to one another.
  • FIG. 14 shows this in plan view through an in FIG. 14 as a handle 16a shown transparent of the tool 16.
  • the tool portion 17 is in the recess 2e axially tight, so that the tool rotation axis W relative to Pressure cylinder 1, 2 is determined axially stationary.
  • the eccentric tool portion 18 Upon rotation of the tool 16 about the tool axis of rotation W (arrow on the right edge of the handle 16a) pivots the eccentric tool portion 18 about the axis W. Since the tool portion 18 in the slot 12 of the register device 9 axially also narrow, the Registering device 9 axially displaced by the engaging in the slot 12 tool portion 18 during the rotational movement of the tool 16 (arrow at the bottom of the handle 16a).
  • the eccentricity of the two axes W and Z of the tool 16 may be for example 1 mm, so that the register device 9 can be adjusted from an imaginary center position to both sides axially by a maximum of 1 mm.
  • FIGS. 15 to 20 show a further developed embodiment with an automatically operable clamping device.
  • the further developed embodiment corresponds to that already disclosed, so that the explanations given here also apply to the further developed exemplary embodiment. Differences exist only insofar as they are due to the automatic operation.
  • the clamp bodies are designated by the reference numeral 24 only for the sake of formal distinction.
  • the register means 9 of the embodiment of FIGS. 1 to 14 are used identically. Their presentation is therefore omitted for the sake of simplicity.
  • FIG. 15 shows an end portion of the printing cylinder 1, 2, wherein the cylinder pin and the pivot bearing of the printing cylinder 1, 2 have been omitted for the sake of simplicity.
  • the illustrated end section has a width measured along the axis of rotation L, which substantially corresponds to the width of a one-side-wide pressure pad.
  • the printing cylinder further such axial sections, in the exemplary embodiment, a total of four such sections for the occupancy of four juxtaposed pressure pads in the width of a single printed page, preferably newspaper page.
  • the clamping channel are distributed over the width of each pressure pad eight clamping body 24, four first clamping body 24 for a leading end and four other, second clamping body 24 for the trailing end of the same pressure pad.
  • the one for the pressure pad end provided first clamp body 24 and provided for the other pressure pad end second clamping body 24 are arranged symmetrically with respect to the respective end to be clamped.
  • the sequence is seen in the axial direction from left to right: first, second, second, first, first, second, second, first clamping bodies 24.
  • FIGS. 16 and 17 show the clamping channel with the clamping bodies 24 each in a cross section.
  • the cross section of the FIG. 16 includes one of the first clamping body 24 for clamping a Abbugungs a pressure pad, not shown, and the cross section of FIG. 17 includes one of the second clamping body 24 for clamping the other Abbugs the same pressure pad.
  • the printing cylinder 1, 2 is a printing cylinder having a circumference which corresponds substantially only to the circumferentially measured length of a single printing pad. In a circumferentially larger pressure cylinder, for example, twice or even larger circumference of the second clamping body 24 would clamp a Abbug a circumferentially offset further pressure pad or terminals serve such another pressure pad.
  • the printing cylinder 1, 2 is equipped with an actuating device for the automatic actuation of the clamping body 24.
  • the actuator comprises an elongate transfer structure 19 which extends axially over the entire or nearly entire length of the impression cylinder 1, 2 and is axially reciprocable relative to the impression cylinder 1, 2 and the pinch bodies 24.
  • the transfer structure 19 is guided by the printing cylinder 1, 2 axially secured against rotation linear.
  • a linear guide forms both the cylinder body 1 and the filler 2, each having a recess within which the transmission structure 19 extends.
  • the transmission structure 19 is arranged in the region of the side facing away from the channel opening underside of the filler 2 and from the channel opening at a rear edge of the clamping channel.
  • the transmission structure 19 transmits tensile and compressive forces in the axial direction. It is shaped as a rectangular bar. The transfer structure 19 forms a slide.
  • the actuating device further comprises engagement members 20, one engaging member 20 per clamping body 24.
  • the engagement members 20 protrude from the transfer structure 19 in each case in the recess 2b in the direction of the clamping body 24. They are arranged along the transfer structure 19 such that each one of the engagement members 20 in a guide engagement with the associated clamping body 24 causes a Abstellterrorism of the respective clamping body 24 so that the nip against the force of the pressing device 7 of the respective clamping body 24 is open or at least the clamping force is reduced in the nip, so that a clamped pressure pad end can be pulled or introduced with less force from the nip.
  • the engagement members 20 are formed in the embodiment as bolts, which are fastened in bores of the transmission structure 19. Other cross-sectional shapes than those of a simple round bolt are also usable, including the formation of a transfer structure 19 with projecting engagement members 20 in one piece.
  • the clamping body 24 facing the respective associated engaging member 20 facing in the region of its rear ends each have a guide rail 27 for the guide engagement with the respectively associated engaging member 20.
  • the guide tracks 27 are formed on the support portions 25, which are for the guiding engagement in the circumferential direction of the impression cylinder 1, 2 seen having an overlapping with the respectively associated engaging member 20 end portion.
  • the guideways 27 are inclined in an axial plane parallel to the radial R, extending in the region of the guide engagement with respect to the axial.
  • An axial movement of the transmission structure 19 with the engagement members 20 causes the guide engagement of engaging member 20 and each associated guide track 27 a Abstell-tilting movement of the respective clamping body 24.
  • FIGS. 16 and 17 are the clamping body 24 in solid lines respectively with its clamping portion 26 in its against the counter surface 2a ( FIG. 16 ) or 1a ( FIG. 16 ) and shown in dashed line in the parked state.
  • the guiding engagement of the engagement members 20 and the guideways 27 is a pure sliding contact.
  • the engagement members 20 are rigidly connected to the transfer structure 19 in all respects.
  • the engagement members 20 could also, especially when designed as a circular pin, rotatably supported on the transmission structure 19 about the pin axis be.
  • Stationary and otherwise not movable with the transfer structure 19 connected engagement members 20 are preferred.
  • the axial guidance of the transmission structure 19 is a sliding guide, wherein the transmission structure 19 in the guide is enclosed in a narrow cross-section, whereby the stability of the slender transmission structure 19 and always correct guiding engagement with the clamping bodies 24 are ensured.
  • the transfer structure 19 is guided in the longitudinal direction on both sides of the engagement members 20, namely in a first enclosure formed by the cylinder body 1 and in a second enclosure, which the cylinder body 1 and the filler 2 together form.
  • the two-sided guide 1c, 2f obtained by means of the enclosures is advantageous for the stability, but in principle one of the enclosures could be dispensed with, preferably that in FIGS FIGS. 16 and 17 lower, formed solely by the cylinder body 1 enclosure.
  • the clamping body 24 are continuously curved at their lower sides and in the outer transition region between the support portion 25 and the clamping portion 26, preferably with a constant radius of curvature. This rounding extends over an arc angle of more than 90 °.
  • the clamping body 24 contact in the region of their rounding the channel wall 1 b, as in the first embodiment, and can also contact the towering channel wall 1 a in the region of the rounding. They are bordered between the channel wall 1a and the respective associated engaging member 20 in the circumferential direction of the printing cylinder with little play.
  • the game is dimensioned so that the tilting movement is possible, the clamping body 24 on the other hand, however, are sufficiently accurately positioned in the circumferential direction.
  • On additional positioning elements, such as the positioning elements 8 of the first embodiment is omitted.
  • FIG. 15 Shown are also the engagement members 20 and in dashed line the transfer structure 19.
  • the transfer structure 19 with the engagement members 20 assumes a neutral position "0", from which they are axially to the right in a position "1" and axially to the left to a position "2" is movable.
  • the neutral position "0" are the Engagement members 20 with the clamping bodies 24 is not engaged.
  • the clamping body 24 are thus delivered in the respective nip to the respective mating surface 1a or 2a due to the spring force of the respectively associated pressing device 7.
  • the actuating device assumes the neutral position "0", in particular during the printing operation.
  • the actuating device also comprises a coupling member 21, which at a front end, in FIG. 15 at the left end of the printing cylinder, is arranged axially movable.
  • the coupling member 21 is axially fixed to the transfer structure 19, in the embodiment, it is absolutely firmly connected to the transfer structure 19.
  • the transmission structure 19, the engagement members 20 and the coupling member 21 form the actuator 19-21.
  • the coupling member 21 has on its outer circumference two radially outwardly projecting webs, between which a recess remains, into which an output member 23 of a drive projects with an engagement end 22.
  • the drive is arranged on a machine frame G in the vicinity of the impression cylinder 1, 2 axially adjacent thereto.
  • the output member 23 is from the neutral position "0" axially back and forth until each in the position "1" or “2" movable and is driven by the drive accordingly.
  • the engagement end 22 protrudes between the two webs of the coupling member 21 in the recess so that the output member 23 via the axially rigid engagement end 22 at an axial lifting the coupling member 21 either against the axially inner web in the one axial direction or the axially outer Bridge pushes in the other axial direction.
  • the transmission structure 19 is accordingly pressed in one direction or pulled into the other.
  • the coupling engagement of the engagement end 22 and the coupling member 21 and their interaction is in FIG. 20 shown enlarged.
  • the engagement end 22 always protrudes between the webs in the coupling member 21.
  • the coupling member 21 of the engagement end 22 free, so it remains in the neutral position "0" axially to both webs and radially to the bottom of the depression between the webs a small distance , so that the pressure cylinder 1, 2 rotates freely from the output member 23, which always assumes the neutral position "0" in the printing operation.
  • the clutch engagement is a driving engagement in which the Output member 23, the actuator 1: 1 entrains in both directions, apart from the small axial distance to the two webs.
  • FIGS. 18 and 19 the two left pairs of the clamping body 24 without the impression cylinder 1, 2, but with the transfer device 19 in dashed line and the engagement members 20.
  • the engagement members 20 are in a solid line in neutral position "0" and dashed respectively in guiding engagement with the guide rail 27 of associated clamping body 24 shown.
  • FIG. 18 shows that in FIG. 15 furthest left clamp body pair and FIG. 19 the one to the right of it.
  • the guideways 27 are straight inclined surfaces which are inclined at a constant angle to the axial, wherein the angle is chosen so that slipping of the engagement members 20 is ensured in the guide engagement safe and no self-locking can occur.
  • the engagement members 20 are arranged on the transfer structure 19 and the guideways 27 on the respective clamping body 24 and aligned relative to each other, that the first clamping body 24, which form the nip with the channel wall 2a, in the movement of the actuator 19-21 in the one axial Direction and the second clamping body 24, which form the nip with the channel wall 1a, are turned off in the movement in the other axial direction, the other of these two groups of the clamping body 24 is free of the engaging members 20.
  • a movement of the actuator 19-21 in the position "1" are in FIG. 18 only the left and in FIG. 19 only the right clamp body 24 in the guide engagement with the respective associated engaging member 20 is turned off, while upon movement of the actuator 19-21 in the position "2" in FIG. 18 only the right and in FIG. 19 the left clamping body 24 are turned off in the guide engagement.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)

Claims (16)

  1. Cylindre d'impression comportant un dispositif de repérage pour le réglage du repérage latéral d'un film d'impression (3) pouvant être appliqué sur une circonférence extérieure du cylindre d'impression, le cylindre d'impression comportant :
    a) un corps de cylindre (1) formant une partie majeure de la circonférence extérieure du cylindre d'impression (1, 2) et comportant un évidement s'étendant axialement sur sa circonférence extérieure,
    b) un canal s'étendant axialement (1a, 1b, 2a, 2b) avec une ouverture de canal sur la circonférence extérieure du cylindre d'impression (1, 2),
    c) le dispositif de repérage (9) agencé dans le canal de manière axialement réglable,
    d) des premiers moyens de serrage avec une première surface de serrage (2d),
    e) et des seconds moyens de serrage (13) comportant une seconde surface de serrage (13a) vers les premiers moyens de serrage et s'écartant de ceux-ci,
    f) dans lequel le dispositif de repérage (9) est serré dans le canal entre la première surface de serrage (2d) et la seconde surface de serrage (13a),
    caractérisé par
    g) une pièce intercalaire (2) placée dans l'évidement s'étendant axialement du corps de cylindre (1), les seconds moyens de serrage (13) étant supportés par la pièce intercalaire (2) sur un côté opposé à la seconde surface de serrage (13a) par l'intermédiaire d'un élément de ressort (14).
  2. Cylindre d'impression selon la revendication précédente, caractérisé en ce que le dispositif de repérage (9) est relié à au moins un des moyens de serrage (13) uniquement par friction.
  3. Cylindre d'impression selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de repérage (9) entre les moyens de serrage (13) est supporté uniquement par frottement sans moyens de prise actifs par complémentarité de formes.
  4. Cylindre d'impression selon l'une quelconque des revendications précédentes, caractérisé en ce que les seconds moyens de serrage (13) sont formés par une pièce d'impression supportée de manière mobile par le cylindre d'impression (1, 2) en direction de la première surface de serrage (2d).
  5. Cylindre d'impression selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément de ressort (14) est de préférence serré élastiquement entre les seconds moyens de serrage (13) et un élément de retenue (15), l'élément de retenue (15) étant de préférence monté.
  6. Cylindre d'impression selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une paroi de canal du cylindre d'impression (1, 2) forme la première surface de serrage (2d).
  7. Cylindre d'impression selon l'une quelconque des revendications précédentes, caractérisé en ce que la pièce intercalaire (2) forme une partie de la surface circonférentielle extérieure du cylindre d'impression.
  8. Cylindre d'impression selon l'une quelconque des revendications précédentes, caractérisé en ce que les seconds moyens de serrage (14) sont supportés et de préférence guidés par la pièce intercalaire (2).
  9. Cylindre d'impression selon l'une quelconque des revendications précédentes, caractérisé en ce que la pièce intercalaire (2) forme ou supporte les premiers moyens de serrage.
  10. Cylindre d'impression selon l'une quelconque des revendications précédentes et présentant au moins une des caractéristiques suivantes :
    - les seconds moyens de serrage (13) sont supportés par la pièce intercalaire (2),
    - au moins la majeure partie du volume des seconds moyens de serrage (13) est reçue dans la pièce intercalaire (2),
    - l'élément de ressort (14) est supporté par la pièce intercalaire (2) par l'intermédiaire d'un élément de retenue (15),
    - au moins la majeure partie de l'élément de ressort (14) est reçue dans la pièce intercalaire (2).
  11. Cylindre d'impression selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de repérage (9) comporte une partie de support (10) serrée par les moyens de serrage (13) et une partie de repérage (11) faisant saillie à partir de la partie de support en direction de l'ouverture du canal (1a, 1b, 2a, 2b) pour une prise avec le film d'impression (3) servant à régler le repérage latéral.
  12. Cylindre d'impression selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de repérage (9) comporte un trou longitudinal (12) accessible à un outil (16) à travers l'ouverture du canal (1a, 1b, 2a, 2b) afin de régler la position axiale du dispositif de repérage (9).
  13. Combinaison du cylindre d'impression selon l'une quelconque des revendications précédentes et d'un outil (16), caractérisée en ce que l'outil (16) pour le réglage du dispositif de repérage (9) forme un excentrique avec une première partie d'outil (17) et une seconde partie d'outil (18), dont une première fait saillie par rapport à un axe de rotation d'outil (W) de manière excentrée par rapport à l'autre le long de l'axe de rotation d'outil (W), et en ce que pour le réglage axial du dispositif de repérage (9), l'une des parties d'outil (17, 18) détermine l'axe de rotation d'outil (W) en prise avec le cylindre d'impression (1, 2), et l'autre des parties de l'outil (17, 18) règle axialement celui-ci par une prise par complémentarité de formes avec le dispositif de repérage (9), lorsque l'outil (16) réalise un mouvement de rotation autour de l'axe de rotation d'outil (W).
  14. Cylindre d'impression selon la revendication 12 ou combinaison selon la revendication 13, caractérisé en ce que le cylindre d'impression (1, 2) comporte un passage (2e) s'étendant depuis la circonférence extérieure du cylindre d'impression (1, 2) jusqu'au trou longitudinal (12), en ce que l'outil (16) peut être introduit dans le trou longitudinal (12) à travers le passage (2e), et en ce que le passage (2e) entoure étroitement et axialement l'outil introduit (16) et détermine ainsi la position axiale de l'outil (16).
  15. Cylindre d'impression selon la revendication précédente, caractérisé en ce que le passage est maintenu au moyen d'un évidement (2e) formé dans ou sur la pièce intercalaire (2), lequel évidement étant de préférence formé sur une paroi de canal (2a) s'étendant jusqu'à l'ouverture de canal et formée par la pièce intercalaire (2).
  16. Cylindre d'impression ou combinaison selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de repérage (9) est un corps de repérage fabriqué en une seule pièce.
EP20070118239 2007-10-10 2007-10-10 Cylindre d'impression supportant par friction un dispositif de registre Not-in-force EP2047993B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20070118239 EP2047993B1 (fr) 2007-10-10 2007-10-10 Cylindre d'impression supportant par friction un dispositif de registre

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20070118239 EP2047993B1 (fr) 2007-10-10 2007-10-10 Cylindre d'impression supportant par friction un dispositif de registre

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EP2047993A1 EP2047993A1 (fr) 2009-04-15
EP2047993B1 true EP2047993B1 (fr) 2012-07-18

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Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2220652C3 (de) * 1972-04-27 1975-04-17 Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach Vorrichtung zum Befestigen von Druckplatten auf dem Plattenzylinder einer Rotationsdruckmaschine
US5419248A (en) * 1994-03-09 1995-05-30 Heidelberg Druckmaschinen Ag Adjustable alignment device for printing plates
DE19920132C2 (de) * 1999-05-03 2001-02-22 Roland Man Druckmasch Seitenregistereinrichtung eines Formzylinders
DE10020910B4 (de) * 2000-04-28 2005-04-21 Koenig & Bauer Ag Vorrichtung für registerhaltiges Aufziehen eines Aufzuges auf einen Zylinder
US6439117B1 (en) * 2000-05-17 2002-08-27 Heidelberger Druckmaschinen Ag Printing press with multi-plate plate cylinder
US6810808B1 (en) * 2003-06-02 2004-11-02 Heidelberger Druckmaschinen Ag Plate cylinder with register pin adjustment device and method of axially adjusting printing plate
DE102004023008A1 (de) 2004-05-10 2005-12-08 Maschinenfabrik Wifag Spann- und Registereinrichtung
DE102005008982B3 (de) * 2005-02-28 2006-03-02 Koenig & Bauer Ag Vorrichtungen zum registerhaltigen Ausrichten zumindest einer Druckplatte auf einem Plattenzylinder

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