EP2047994A1 - Cylindre d'impression avec un canal de serrage pour une plaque d'impression - Google Patents

Cylindre d'impression avec un canal de serrage pour une plaque d'impression Download PDF

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Publication number
EP2047994A1
EP2047994A1 EP07118238A EP07118238A EP2047994A1 EP 2047994 A1 EP2047994 A1 EP 2047994A1 EP 07118238 A EP07118238 A EP 07118238A EP 07118238 A EP07118238 A EP 07118238A EP 2047994 A1 EP2047994 A1 EP 2047994A1
Authority
EP
European Patent Office
Prior art keywords
clamping
printing cylinder
channel
cylinder
clamping body
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.)
Withdrawn
Application number
EP07118238A
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German (de)
English (en)
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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wifag Maschinenfabrik AG filed Critical Wifag Maschinenfabrik AG
Priority to EP07118238A priority Critical patent/EP2047994A1/fr
Publication of EP2047994A1 publication Critical patent/EP2047994A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/005—Attaching and registering printing formes to supports
    • 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

Definitions

  • the invention relates to a printing cylinder with a clamping channel for clamping one end of a pressure pad, which can be placed on an outer periphery of the printing cylinder.
  • 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.
  • Pressure cylinders have for the attachment of pressure linings axial clamping channels or even a single clamping channel.
  • the pressure pads are bent at their leading and trailing ends, so that at the respective end serving as a clamping flange short Abbug is obtained, with which the pressure pad protrudes into a clamping channel and is clamped there by means of a clamping device.
  • a clamping device To create a clamping channel, an axially extending recess is formed on an outer circumference of a cylinder body of the printing cylinder, for example milled or eroded.
  • the clamping device is mounted by means of a filler, which is accurately inserted into the recess. If the printing cylinder is a printing form cylinder, such a filling piece usually also serves to support a register device for setting the side register of the pressure pad formed in this case as a printing plate or the plurality of pressure pads arranged next to one another.
  • the problem is the weakening of the material due to the incorporated into the cylinder body for the filler recess, through the filler only to a part can be compensated.
  • the flexural rigidity of the impression cylinder is reduced in accordance with the cross-sectional area of the recess formed in the cylinder body.
  • the invention relates to a printing cylinder with a clamping channel for clamping one end of a auflegbaren on an outer periphery of the printing cylinder pressure pad.
  • the pressure cylinder comprises a cylinder body and a filler used to form the clamping channel in the cylinder body.
  • the cylinder body has on its outer periphery an outwardly preferably open recess into which the filler is accordingly inserted from the outer periphery, so that it together with the cylinder body forms the outer periphery of the impression cylinder, wherein the outer periphery formed by the filler in Circumferential direction is very short compared to the peripheral portion of the cylinder body.
  • the clamping channel has a first channel wall and a second channel wall, which face each other in the circumferential direction of the pressure cylinder and each extending in the direction of a channel opening. Preferably, they each extend to one of the two outer edges of the clamping channel delimiting the channel opening.
  • a clamping body for forming a clamping gap for one end of the pressure pad is arranged.
  • a plurality of clamping bodies are arranged in the clamping channel for clamping the same pressure pad.
  • the plurality of clamping bodies are preferably axially spaced apart, so that they each form a separate clamping gap for the pressure pad.
  • the clamping bodies are also separate from each other body and also mounted separately and independently for clamping movable.
  • At least one clamping body is provided in the clamping channel for each of the pressure pads, more preferably for each of the pressure pads each more clamping body provided for the advantageously above the same applies to the one pressure pad.
  • the filler has a receptacle which faces a wall of the cylinder body open and in which the clamping body at least partially is included.
  • the filler is on the side at which it has the receptacle, on the wall of the cylinder body, so that the wall of the cylinder body in contact with the filler delimits the receptacle.
  • the cross-sectional area of the recess provided for the filler piece in the cylinder body can be correspondingly reduced and the flexural rigidity can be increased for a given diameter.
  • the filler is preferably recessed on the corresponding side, so the receptacle shaped as a recess.
  • a filler which has a local recess for the clamping body or the plurality of clamping body several only local recesses, a greater part of the lost by the recess of the cylinder body bending stiffness can be recovered than with a filler, which is used to create the recording or multiple receptacles for a plurality of clamping body, for example, only supported by local spacers on the oppositely facing wall of the cylinder body, although such a design would also be possible in principle.
  • the recess is preferably obtained by a material-removing machining of the filler.
  • the recess or a plurality of recesses is or are at least substantially axially only as wide as a single or two juxtaposed (s) clamping bodies.
  • the receptacle preferably recess, is preferably provided on an underside of the filler piece facing away from the channel opening.
  • the recess passes through the filler piece from a front side having the second channel wall to a rear side of the filler piece facing away from the second channel wall.
  • a continuous recess in the circumferential direction of the printing cylinder facilitates the incorporation by means of a machining of the filler.
  • the recess is preferably rectangular in cross section.
  • a recess passing through the filler in the circumferential direction of the pressure cylinder also provides, at the rear side of the filler, space-saving possibilities of access to the clamping body and thus automatic actuation of the clamping body.
  • the cylinder body forms the first channel wall and the filler the second channel wall. This also contributes to the cross-sectional reduction of the filler and, accordingly, to the reduction of the required material for the creation of the clamping channel material weakening of the cylinder body. If the cylinder body forms one of the channel walls, it is advantageous if the relevant channel wall does not form an undercut viewed from the channel opening but points at least substantially radially to a rotation axis of the pressure cylinder in the cross section of the clamping channel or at a small distance parallel to a radial the axis of rotation of the printing cylinder extends.
  • the clamping body has a support section which is partially, preferably with a predominant part of its cross-sectional area or its volume accommodated in the receptacle. From the support portion protrudes a clamping portion in the direction of the channel opening.
  • the support section and the clamping section can form an angle when seen in cross-section, preferably an at least substantially right angle.
  • a corresponding angle piece forms the clamping body.
  • the clamping portion is seen in cross section advantageously very narrow and may for example have a thickness of 1 mm to 5 mm. A thickness in the range of 1 to 3 mm is preferred. The smaller the thickness of the clamp body is, the narrower the gap bounded by the first and second duct wall can be.
  • a bending of the clamping body, in particular the formation of the clamping body as an angle, allows a particularly space-saving storage of the clamping body and radially to the axis of rotation of the impression cylinder seen flat cross-sectional shape of the filler.
  • the width of the clamping channel measured in the circumferential direction can advantageously be small in the channel region adjoining the channel opening by means of such a geometry and finger-like thin-protruding clamping section. Since the filler as such contributes to the flexural rigidity of the printing cylinder, conversely, the free spaces in the cross section of the printing cylinder due to the channel gap affect the flexural rigidity, the flexural rigidity can be increased by such a design again.
  • the overlapping arrangement allows a particularly narrow gap between the channel walls, which adjoin the channel opening.
  • Such clamping devices are in the PCT / EP2007 / 006193 described in this regard.
  • the pressure cylinder comprises a pressing device, which exerts a force on the clamping body, which causes a clamping force in the clamping gap.
  • the pressing device preferably exerts a spring force on the clamping body.
  • the pressing device may in particular be a single mechanical spring or be formed by a plurality of mechanical springs.
  • a pneumatic spring is also usable.
  • the pressing device is not a spring device, but has a drive for generating the clamping force, for example an electric drive.
  • the pressing device is preferably received in the filler or supported on the filler.
  • the word "or” is understood here in the usual logical sense as well as otherwise in the sense of the invention, ie it includes the meaning of "either ... or” and also the meaning of "and”, unless otherwise stated in the respective context can result.
  • the pressure device can thus for example only supported on the filler, but not included in the filler or absorbed only in the filler, but not supported on it or, and this corresponds to preferred embodiments, both supported on the filler and be included in the filler. At least one is preferred predominant volume fraction of the pressing device received in the filler.
  • the pressing device preferably acts on the filling piece within the recess or a receptacle formed differently from the filling piece. In such embodiments, a region of the clamping body, in which the force of the pressing device is introduced into the clamping body, is thus accommodated in the receptacle.
  • the clamping body is preferably tiltably mounted in the clamping channel.
  • the movement during clamping namely the feed movement for closing and the Abstellieri for opening the nip, at least for increasing and decreasing the clamping force, is accordingly a tilting movement about a tilt axis.
  • a tiltable clamping body requires in comparison to, for example, a translationally movable clamping body, but can also be used alternatively, less space for the execution of the parking and delivery movement.
  • the clamping body is preferably a rigid body, which does not change its shape during the delivery and Abstellieri to and from a mating surface with which it forms the nip.
  • it can also be elastic in shape and generate the clamping force as elasticity. In such embodiments, for example, can be dispensed with a pressing device.
  • an internally rigid clamping body is advantageous in order to be able to ensure a desired clamping force accurately and reproducibly in all operating states.
  • the clamping body is mounted tiltably, it preferably has on its outer surface an outwardly bulging rounding over which it is supported on the printing cylinder, so that in contact of the rounding with the printing cylinder, the tilting axis of the clamping body is formed.
  • the clamping body thus rolls over a circular arc section on a wall of the printing cylinder.
  • the rounding is preferably formed on a side remote from the filler piece and preferably also from the channel opening side of the clamping body, which preferably faces the axis of rotation of the pressure cylinder.
  • the rounding may extend from such an underside of the clamp body over a larger angle section of 40 ° or more, for example over more than 60 ° or more than 90 °.
  • the clamping body can in the region of the rounding a bottom of the recess of the cylinder body and at the same time a towering wall of the recess to contact.
  • the outwardly bulging, with respect to the opposite surface of the impression cylinder convex curve allows to form the standing in contact with the round counter surface as a smooth, flat surface. This facilitates the production and in particular avoids indentations and concomitant stiffness reductions of the printing cylinder.
  • the rounding preferably has a curvature radius of at least 5 mm, more preferably at least 10 mm, in its arc section that is in contact with the counter surface during the tilting movement.
  • connecting surfaces for example continuously further rounded or planar surfaces, adjoin the round contact section.
  • the rounded contact portion protrudes in preferred embodiments thus not in the manner of a raised nubs from a base of the clamping body, but is itself part of such a continuous, preferably bulbous base. If the clamping body has the support section and the clamping section pointing at an angle to the support section, the rounding or at least a major part of its arc is formed on the support section, but in likewise preferred embodiments it can also extend a little from there to the channel opening.
  • a further clamping body is arranged in the clamping channel, which forms a clamping gap for clamping the other end of the same pressure pad or another pressure pad, which is offset in the circumferential direction on the printing cylinder can be pulled.
  • the clamp bodies may be the same except for the reversal of the direction in the supply and Abstellterrorism for clamping the respective end of the same pressure pad or the pressure pads.
  • the properties disclosed for one of the clamping bodies advantageously also have the other clamping body individually or in combination.
  • both clamping bodies can have a supporting section and an angularly pointing clamping section, for example each shaped as an angle profile, or tiltably mounted, in particular having the rounding described. They can be completely identical in form.
  • both pressing devices are supported on the filling piece or are accommodated with at least a predominant volume fraction each in the filler.
  • a spring member as a pressing device with regard to the initiation of the spring force, which is introduced in the one clamping body in the region of the support portion and the other clamping body in the region of the clamping portion.
  • the invention is particularly advantageous for slim impression cylinders, that is to say pressure cylinders having a comparatively large length to diameter ratio.
  • Examples include printing cylinders, which have a circumference corresponding to two sides with a length of the usable for the cylinder body of four pages, for example, newspaper pages, a circumference corresponding to a single page or more than four pages, for example, six pages, especially newspaper pages.
  • the formats mentioned by way of example are also known as 4x1 printing cylinders and 6x2 printing cylinders.
  • the invention is also advantageous for all other configurations, for example a 4x2 printing form cylinder and also for a transfer cylinder, in particular blanket cylinder, which forms a printing gap for a continuous web with an impression cylinder.
  • 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 one projecting from the cylinder body 1 cylinder pin for the pivot bearing and an inserted into the cylinder body 1 at the outer periphery filler 2 to form a clamping channel for pressure 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 press, 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 a part of the length of the cylinder body 1, which corresponds approximately to the width of a printing 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 on 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 register devices 9 are mounted separately from each other individually axially adjustable, the storage is realized as already mentioned on the filler 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 is this other, second end of the same pressure pad 3 in a formed between the filler 2 and the second clamping body 4 second clamping gap clamped.
  • 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 symmetry plane including 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 each case in a cavity of the filler piece 2 and act in the case of the second clamping body 4 in the region of the recess 2b on the respective associated clamping body 4th
  • 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.
  • 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 Abstellschul, 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 in the direction of the channel opening.
  • 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 piece 2 has contact with the walls of the cylinder body 1 delimiting the recess at all sides located within the recess in order to best stiffen the cylinder body 1 in the area 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 2 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 on 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 device 9 and the clamping means 2 and 13 is designed, ie after spring tension, size of the clamping surfaces 2d and 13a and their coefficients of friction, that the register means 9 may indeed 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 is maintained under all conceivable conditions during operation of the printing cylinder 1, 2.
  • 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 , Of the Diameter of the tool portion 18 and the width of the slot 12 are precisely matched to each other, so that the tool portion 18 just fits into the slot 12. Likewise, 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 The tool section 17 is axially tightly held in the recess 2e, so that the tool rotation axis W is determined to be axially fixed relative to the impression cylinder 1, 2.
  • 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 pressure cylinder has further such axial sections, in the exemplary embodiment a total of four such sections for occupancy by four juxtaposed pressure pads in the width of a single printed page, preferably newspaper page.
  • In 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 clamping 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. 16 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 in axial direction tensile and compressive forces. 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 rigid in all respects with the transfer structure 19 connected.
  • the engagement members 20 could also be rotatably supported on the transfer structure 19 around the bolt axis, particularly when configured as circular bolts.
  • 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 until a position "2" is movable.
  • the neutral position "0" the engagement members 20 are not engaged with the clamp bodies 24.
  • 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 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.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
EP07118238A 2007-10-10 2007-10-10 Cylindre d'impression avec un canal de serrage pour une plaque d'impression Withdrawn EP2047994A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07118238A EP2047994A1 (fr) 2007-10-10 2007-10-10 Cylindre d'impression avec un canal de serrage pour une plaque d'impression

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07118238A EP2047994A1 (fr) 2007-10-10 2007-10-10 Cylindre d'impression avec un canal de serrage pour une plaque d'impression

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EP2047994A1 true EP2047994A1 (fr) 2009-04-15

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4034494C1 (fr) * 1990-10-30 1992-03-05 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
WO2000073066A2 (fr) * 1999-05-29 2000-12-07 Koenig & Bauer Aktiengesellschaft Dispositif pour serrer et/ou bloquer des plaques souples
WO2001083215A1 (fr) * 2000-04-28 2001-11-08 Koenig & Bauer Aktiengesellschaft Dispositifs permettant de recouvrir un cylindre d'un habillage avec des elements de reperage
DE10244944A1 (de) * 2002-09-26 2004-04-08 Maschinenfabrik Wifag Klemmvorrichtung zum Klemmen einer flexiblen Bespannung eines Zylinders einer Druckmaschine
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
WO2005108079A1 (fr) * 2004-05-03 2005-11-17 Koenig & Bauer Aktiengesellschaft Machine d'impression comportant un organe de transmission de rotation pour l'introduction d'un milieu liquide ou gazeux
DE102005029167A1 (de) 2005-06-23 2006-12-28 Maschinenfabrik Wifag Druckzylinderbelag, Kombination aus Druckzylinder und Druckzylinderbelag sowie Druckzylinder mit klemmend befestigtem Druckzylinderbelag
EP1738905A2 (fr) * 2005-06-28 2007-01-03 Koenig & Bauer Aktiengesellschaft Cylindre d'une machine d'impression rotative avec un canal parallèle à l'axe du cylindre
DE102006002330A1 (de) * 2006-01-18 2007-07-19 Koenig & Bauer Aktiengesellschaft Plattenspannvorrichtung für den Plattenzylinder einer Druckmaschine

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4034494C1 (fr) * 1990-10-30 1992-03-05 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
WO2000073066A2 (fr) * 1999-05-29 2000-12-07 Koenig & Bauer Aktiengesellschaft Dispositif pour serrer et/ou bloquer des plaques souples
WO2001083215A1 (fr) * 2000-04-28 2001-11-08 Koenig & Bauer Aktiengesellschaft Dispositifs permettant de recouvrir un cylindre d'un habillage avec des elements de reperage
DE10244944A1 (de) * 2002-09-26 2004-04-08 Maschinenfabrik Wifag Klemmvorrichtung zum Klemmen einer flexiblen Bespannung eines Zylinders einer Druckmaschine
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
WO2005108079A1 (fr) * 2004-05-03 2005-11-17 Koenig & Bauer Aktiengesellschaft Machine d'impression comportant un organe de transmission de rotation pour l'introduction d'un milieu liquide ou gazeux
DE102005029167A1 (de) 2005-06-23 2006-12-28 Maschinenfabrik Wifag Druckzylinderbelag, Kombination aus Druckzylinder und Druckzylinderbelag sowie Druckzylinder mit klemmend befestigtem Druckzylinderbelag
EP1738905A2 (fr) * 2005-06-28 2007-01-03 Koenig & Bauer Aktiengesellschaft Cylindre d'une machine d'impression rotative avec un canal parallèle à l'axe du cylindre
DE102006002330A1 (de) * 2006-01-18 2007-07-19 Koenig & Bauer Aktiengesellschaft Plattenspannvorrichtung für den Plattenzylinder einer Druckmaschine

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