EP2040927B1 - Dispositif de serrage muni d'une pièce de serrage inclinable - Google Patents

Dispositif de serrage muni d'une pièce de serrage inclinable Download PDF

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Publication number
EP2040927B1
EP2040927B1 EP07786026A EP07786026A EP2040927B1 EP 2040927 B1 EP2040927 B1 EP 2040927B1 EP 07786026 A EP07786026 A EP 07786026A EP 07786026 A EP07786026 A EP 07786026A EP 2040927 B1 EP2040927 B1 EP 2040927B1
Authority
EP
European Patent Office
Prior art keywords
clamping
clamping piece
channel
piece
bearing
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
EP07786026A
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German (de)
English (en)
Other versions
EP2040927A1 (fr
Inventor
Andreas Zahnd
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wifag Maschinenfabrik AG
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Wifag Maschinenfabrik AG
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Publication of EP2040927A1 publication Critical patent/EP2040927A1/fr
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Publication of EP2040927B1 publication Critical patent/EP2040927B1/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
    • B41F27/12—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
    • 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

Definitions

  • the invention relates to a device for clamping a bendable pressure pad on a printing cylinder in or for a rotary printing press, preferably web-fed rotary printing press.
  • the invention can be used in particular in offset printing, both in wet and dry offset.
  • clamping devices of various types are known.
  • the DE 42 25 949 C2 discloses clamping by means of spring tongues.
  • Massive clamps are generally superior in terms of the precision with which the position of the respective nip can be given design.
  • a clamping device having a shaft extending longitudinally in the channel, in which a plurality of clamping pieces are movably guided radially in a sliding contact radially with respect to the shaft and acted upon radially outward against a clamping surface with a spring force with respect to the shaft.
  • the shaft is movable between a closed position, in which the clamping pieces each form a clamping gap with the clamping surface, and a release position to and fro.
  • the clamping device requires a considerable design effort.
  • a simpler clamping device is from the DE 10 2005 029 167.8 known. It comprises a plurality of clamping pieces, which are guided independently of each other in sliding contact directly by walls of the clamping channel linear and pressed by spring force against the clamping surface. Although the clamping device is cheaper to manufacture and easy to install, the linear guide still requires a very precise production of guide surfaces of the clamping channel and the clamping pieces. From the WO 02/043962 a clamping device is known with a tiltably mounted clamping piece.
  • the invention has for clamping a bendable pressure pad on a printing cylinder, a device to the object, hereinafter also referred to as clamping device comprising a clamping piece and a spring member for acting on the clamping piece with a spring force.
  • the clamping piece is arranged in a clamping channel of the printing cylinder and forms a clamping surface with a clamping gap, in which a Abbug the pressure pad is inserted.
  • the clamping piece on a flat, in particular to the clamping surface in approximately parallel surface, between which and the clamping surface of the clamping channel of the Abbug can be inserted.
  • the spring member is also arranged in the clamping channel. In any case, the spring force biases the clamping piece in the direction of the clamping surface.
  • the clamping piece Prior to insertion of the bend, it preferably biases the clamp against the clamping surface, i. before inserting the Abbug the clamping piece is preferably in contact with the clamping surface.
  • the clamping piece is stiff in relation to its clamping function, at least can be neglected in the clamping piece possibly existing elasticity against the elasticity of the spring member.
  • Clamp and spring member are preferably separate parts.
  • the clamping piece is preferably in one piece, whereby a multi-part clamping piece could find application.
  • the clamping piece contacted with an outer surface formed in the clamping channel bearing, which supports the clamping piece tilted.
  • the clamping piece is tilted in contact with the bearing against the restoring spring force of the spring member of the clamping surface.
  • the spring member is biased stronger in a tilting of the clamping piece, so that the clamping force exerted by the clamping piece in the clamping force increases when the clamping piece moves in a tilting movement of the clamping surface.
  • the spring force is introduced in a direction in the clamping piece, which has a common directional component with the direction of the force exerted by the clamping piece on the bearing point. More preferably, the two directions are at least substantially coincident. It is advantageous if the clamping force exerted by the clamping piece on the clamping surface and the force exerted by the clamping piece on the bearing point have a common directional component. More preferably, the two forces act in each case at least with their predominant part in the same direction.
  • the clamping piece is preferably tilted freely back and forth, so is stretched only by means of the spring force in the direction of the clamping surface, but in principle, the possibility of a releasable blocking the tilting mobility should not be excluded.
  • the clamping piece advantageously does not have to be forcibly tilted by means of an external engagement, but tilts away when inserting the Abbugs in the nip of the clamping surface and upon withdrawal of the Abbug due to the spring force by itself again in the direction of the clamping surface.
  • the insertion into the nip forces the tilting movement and pulling out allows them.
  • a tilting bearing can be precisely produced in a simple manner.
  • the processing effort is less with the same precision in terms of the location of the nip as for a linear guided clamping piece or a rotary joint with circumferential sliding surfaces.
  • the bearing can be seen in the tilt plane, i. in the cross section of the printing cylinder, form a short arc. More preferably, however, the bearing is formed by an edge.
  • the clamping piece with the bearing contact only in a line of contact.
  • the position of the contact line preferably does not change during the tilting movement.
  • the bearing point and the clamping piece on mutually congruent bearing surfaces which form over a tilt angle of preferably at most 30 °, a sliding pair, ie, a pivot bearing.
  • a tilt angle is sufficient, which just allows the insertion of the Abbugs.
  • tilting movements are advantageously possible by a tilt angle, which exceeds the minimum tilt angle required for the function by a certain amount, preferably only so much that, despite unavoidable manufacturing tolerances, the Kippbewegige is ensured by the minimum tilt angle.
  • the Kipplagerung it is sufficient and corresponds to preferred embodiments, when the clamping piece with the bearing point is only in pressure contact.
  • the clamping piece preferably has only a single degree of freedom of movement, namely the degree of freedom of the tilting movement about a tilting axis fixed with respect to the pressure cylinder.
  • the tilting axis preferably extends in or near the region of the contact, in the case of the most preferred embodiment of the line contact it coincides with the contact line or axis.
  • the concept of the contact line is not understood as a mathematically exact line, but only as a line, as it is approximated under the usual manufacturing conditions, ie manufacturing tolerances, a mathematically exact line.
  • either the clamping piece or, more preferably, the bearing point can form the edge.
  • the respective other, preferably the clamping piece preferably has a flat bearing surface for the pressure contact with the edge.
  • the clamping piece preferably forms only a single axially narrow clamping gap.
  • the axial, ie measured in the axial direction of the printing cylinder width of the nip and preferably the clamping piece as a whole is in preferred embodiments at most one tenth of the width of a pressure pad to be clamped simple width.
  • the width should be at most 30 mm or better at most 20 mm.
  • An axially narrow clamping piece with a single narrow nip is preferable in view of the precise specification of the location of the nip a broad nip or a wide clamping piece with two or more nips next to each other, as it becomes more difficult with increasing width, the tilt axis exactly the place and according to their orientation. Precision is also conducive if, to produce the spring force, only a clamping piece associated with it, i. provided on the clamping piece acting spring member, preferably arranged in the clamping channel. In preferred several acting on the same Abbug clamping pieces, preferably two clamping pieces per Abbug, this means that for each of the clamping pieces each have their own spring member is provided.
  • the feature of the narrow clamping piece, at least narrow nip, and the feature according to which, with several clamping pieces, each of the clamping pieces is supported independently of the other and acted upon by a spring force, are advantageously used in combination, but are also already alone advantageous, furthermore even without the here claimed invention of Kippbewegige.
  • a wall of the clamping channel forming the clamping surface advantageously extends as far as an opening of the clamping channel located on the outer periphery of the printing cylinder, at least substantially radially with respect to the axis of rotation or transversely to the circumferential direction of the printing cylinder.
  • this channel wall is flat.
  • a radial or substantially radial extension allows the absorption of a Abbugs, which points to the adjacent, resting on the peripheral surface of the printing cylinder portion of the printing pad at a right angle.
  • the clamping piece has in preferred embodiments, a bearing portion and a projecting from the bearing portion, in the cross section of the printing cylinder in comparison with the bearing portion narrow finger.
  • the finger forms the nip
  • the bearing portion is advantageously the assembly in the channel, preferably the tilting bearing of the clamping piece.
  • the assembly preferably comprises an attachment of the clamping piece, which leaves the clamping piece, however, the required freedom to perform its function.
  • the attachment may advantageously form an abutment for the spring member or hold the clamping piece to a filler, as long as the filler is not yet inserted into a matching recess of the printing cylinder.
  • the spring member may be supported on the filler and the clamping piece or on the fastening means and the clamping piece.
  • the spring member surrounds the attachment means, wherein, for example, the spring member may be surrounded by the clamping piece.
  • a fastening means in particular a mounting bolt, preferably a bolt serve.
  • the spring force preferably acts in the longitudinal direction of the mounting bolt.
  • clamping channel a further clamping piece is expediently arranged, with which the other Abbug the same pressure pad or a turn of another pressure pad can be clamped.
  • the clamping device is thus formed largely symmetrically with respect to the clamping pieces and their mobility with respect to the leading and the trailing side of the clamping channel.
  • a difference to be pointed out results in preferred embodiments, however, from the fact that the clamping pieces are advantageously mounted on the same side of the clamping channel, but the respective spring force applied in different directions, preferably in opposite directions on the two types of clamping pieces becomes.
  • the assembly of both types of clamping pieces on the same side of the clamping channel ie on the same side seen in the circumferential direction of the printing cylinder, simplifies the manufacture and assembly.
  • the axially offset in the clamping channel to each other clamping pieces overlap each other in the circumferential direction of the printing cylinder.
  • the clamping pieces or at least the areas of the clamping pieces which form the clamping gaps overlap each other in particular, if no pressure pad is clamped, so no turning into one of the clamping gaps of the overlapping clamping pieces protrudes.
  • the clamping pieces have said bearing portions and the nip forming fingers, it is sufficient in principle, if only the fingers overlap each other, but more preferably also overlap the bearing portions.
  • Mutually overlapping clamping pieces are particularly advantageous if the opening of the clamping channel and the channel region adjoining the opening radially inwardly are very narrow, for example 5 mm or even narrower.
  • the overlapping arrangement makes it possible to make the portions of the clamping pieces, which form the clamping gaps, thicker and thus stiffer in the circumferential direction of the printing cylinder than is possible next to one another in the case of an arrangement in the circumferential direction.
  • the spring members are preferably mechanical springs and may be in particular spring-loaded coil springs or coil springs. Alternatively, pneumatic springs come into question. If a common spring member is used for several clamps, this also applies to such a spring member.
  • the printing cylinder is preferably a forme cylinder, but may for example also be a blanket cylinder, as are known, for example, from the newspaper offset printing.
  • the printing cylinder preferably has twice the circumference. If necessary, he also has only a simple scope.
  • the printing cylinder is a blanket cylinder, it may have a single continuous clamping channel or a plurality of axially offset clamping channels, which are offset from one another in the circumferential direction.
  • the blanket or the plurality of blankets arranged side by side on the blanket cylinder in such embodiments span the full circumference of the cylinder. However, a subdivision in the circumferential direction is also conceivable.
  • the pressure cylinder is a form cylinder
  • the one or more clamping channels extend or extend axially over at least the major part of the length of the forme cylinder.
  • a forme cylinder simple circumference in particular a single continuous channel and a double-circumference form cylinder having two continuous channels with an offset from each other by 180 ° in the circumferential direction.
  • axially offset clamping channels can also be provided in the case of a forme cylinder, which are offset from one another in the circumferential direction.
  • a forme cylinder of twice the circumference may, for example, have two groups of two clamping channels axially next to one another, wherein the clamping channels within the respective group are offset by 180 ° in the circumferential direction and the clamping channels are offset from one another by 90 ° from one group to the next.
  • the Figures 1 and 2 show a forme cylinder 1 of a web-fed rotary offset printing press in each case a different cross-section.
  • the forme cylinder 1 has a double circumference, ie at the periphery of the forme cylinder 1 in the circumferential direction two printing plates 2 and 4 are arranged in succession and clamped by two clamping devices which are arranged in two clamping channels.
  • the clamping channels each extend continuously over the entire axial length of the forme cylinder 1 and are mutually offset in the circumferential direction by 180 °.
  • the forme cylinder 1 can in particular be four or six newspaper pages wide.
  • the printing plates 2 and 4 have at their leading in the direction of rotation V and trailing ends each a turn on, which is clamped in one of the two clamping channels.
  • the clamping device comprises a plurality of first clamping pieces 11, which are arranged in the axial direction of the forme cylinder 1 side by side in the clamping channel and by means of which the side by side on the forme cylinder 1 arranged printing plates 2 can be clamped at their leading turns 3.
  • the clamping device further comprises a plurality of second clamping pieces 12, which are also arranged at intervals axially adjacent to each other in the clamping channel and by means of which on the forme cylinder 1 juxtaposed printing plates 4 can be clamped at their trailing turns 5.
  • FIG. 1 is one of the first clamping pieces 11 and in FIG. 2 one of the second clamping pieces 12 is shown.
  • the clamping pieces 11 and 12 are arranged alternately in the axial direction of the forme cylinder 1 and in each case at a distance from each other and stored so that each of the clamping pieces 11 and 12 can independently perform the movement required for the clamping of each other.
  • two first clamping pieces 11 are provided for the leading Abbug 3 and two second clamping pieces 12 for the trailing Abbug 5.
  • Each of the clamping pieces 11 and 12 forms only a single nip F.
  • the clamping pieces 11 and 12 are compared to the printing plates 2 and 4 is very narrow; Preferably, its width measured in the axial direction is at most one tenth, more preferably at most one twentieth of the width of the single-wide printing plates 2 and 4.
  • the clamping pieces 11 and 12 are mounted on a filler 8, which is inserted in a recess of the forme cylinder 1 and fixed to the forme cylinder 1 and immovably connected.
  • the filler 8 forms a short arc portion of the outer peripheral surface of the forme cylinder 1. Unless the assembly of the clamping device is concerned, the filler 8 can be considered as belonging to the forme cylinder 1.
  • the clamping channel has on the outer circumference of the forme cylinder 1 an axially straight, slot-shaped channel opening through which the bends 3 and 5 protrude into the clamping channel. Close to the channel opening, a leading channel wall 1a and a trailing channel wall 1b.
  • the clamping pieces 11 form with the leading channel wall 1a depending on a nip F for the leading prints 3.
  • the clamping pieces 12 form for the trailing turns 5 each have a nip F with the trailing channel wall 1b.
  • the channel walls 1a and 1b thus form the mating surfaces or clamping surfaces for the clamping pieces 11 and 12.
  • the channel walls 1a and 1b extend from the channel opening to at least the respective nip F plane parallel to an axial / radial plane on the axis of rotation of the forme cylinder first Since they are only a few millimeters apart, you can also, in a good approximation, also be referred to as axial / radial planes. In the exemplary embodiment, they also extend radially inward even beyond the respective clamping gap F to each other plane-parallel. Radially inwardly from the narrow gap between the channel walls 1a and 1b, the clamping channel opens to a receiving space for the storage and assembly of the clamping pieces 11 and 12th
  • the clamping pieces 11 are equal to each other, and they are mounted in the same way and movably mounted for clamping. Designs only one of the clamping pieces 11 thus apply equally to the other clamping pieces 11.
  • the clamping piece 11 consists of a bearing portion 13 which is received in the receiving space of the clamping channel and is surrounded by the walls thereof, and a finger 14 which protrudes from the bearing portion 13 outwardly toward the channel opening and into the gap between the channel walls 1a and 1b protrudes.
  • the finger 14 forms with the channel wall 1 a the nip F.
  • the finger 14 tapers from the nip F in the direction of the channel opening, so that an insertion funnel for the Abbug 3 is formed. In the exemplary embodiment, it has a constant inclination from its outer end in the direction of the clamping gap F.
  • the clamping piece 11 is tiltable in the cross-sectional plane about a tilt axis R as a whole.
  • the tilting axis R is formed by a pressure contact of the clamping piece 11 with a bearing point, in the embodiment an axially straight edge, which is formed with respect to the axis of rotation of the forme cylinder 1 radially inwardly of the nip F on a channel wall 1 c of the receiving space.
  • the channel wall 1c forms a bottom of the clamping channel.
  • In the channel wall 1c is axially continuous recess 18, in the embodiment, a rectangular groove, incorporated.
  • the bearing point is from one of the two outer edges of the recess 18th educated. The edges are each shaped as an edge.
  • the clamping piece 11 has a corresponding bearing surface, with which it presses against the bearing point formed in the clamping channel.
  • the clamping member 11 is acted upon by a prestressed spring member 7 with a spring force which biases the finger 14 in the direction of the channel wall 1a.
  • the spring member 7 is a loaded on compression coil spring.
  • Each of the clamping pieces 11 is assigned in each case its own spring member 7, which acts in each case only on the associated clamping piece 11.
  • the spring member 7 presses the clamping piece 11 further against the bearing point.
  • the spring axis of the spring member 7 extends at right angles to the channel wall 1a. An inclination would be less preferred, but still possible.
  • the force exerted by the spring member 7 on the clamping piece 11 spring force acts substantially in the same direction as the force exerted by the clamping piece 11 on the bearing pressure.
  • the clamping piece 11 contacts the bearing with an outer surface which faces in substantially the same direction as that surface with which the clamping piece 11 forms the nip F.
  • the clamping piece 11 is mounted by means of a mounting bolt 9, which is designed in the embodiment as a bolt on the side of the clamping channel on which the channel wall 1 a is formed.
  • the mounting bolt 9 has a shoulder on which the spring member 7 is supported.
  • the spring member 7 is stretched in this way between the mounting bolt 9 and the clamping piece 11 and pushes the clamping piece 11 in the direction of its spring axis and thus the finger 14 in the direction of the channel wall 1a, whereby the for clamping of the Abbugs 3 in the nip F required clamping force is generated.
  • the mounting bolt 9 is perpendicular to the axial / radial plane of the forme cylinder 1, which extends centrally between the two edges of the channel opening.
  • All of the clamping pieces 11 and 12 each protrude with a projection 16 in the recess 18 and form with one of the two edges of the recess 18, the tilting bearing for the respective clamping piece 11 or 12.
  • the spring member 7 acts on the tilting of the axis R to the nip F extending, conceived as a straight line rocker between the tilting axis R and the nip F. This results in a translation obtained by the spring travel of the spring member 7 is smaller than the arc, the fingers 14 travels in a tilting movement.
  • the spring axis is perpendicular to the rocker arm. However, an inclination would also be possible.
  • the clamping piece 11 surrounds the edge of the recess 18 which forms the tilting bearing for the clamping piece 11, with a concave portion.
  • the concave portion has an inner edge formed by two surfaces at an obtuse angle. One of the surfaces is formed by the projection 16 and the other of the surfaces is formed by the bearing portion 13.
  • the projection 16 is tapered in cross-section conical to its free end.
  • the bearing surface of the clamping piece 11, which contacts the bearing point of the clamping channel is therefore in relation to the spring axis simply as an inclined plane, d. H. as a plane with constant slope, shaped.
  • the tilting bearing is formed in this way in the manner of a rocker.
  • the tilting axis could be formed in a region of the finger 14 near the bearing portion 13 in the same shape of the clamping piece 11, in the embodiment at the radially inner edge the channel wall 1a. Such an arrangement would correspond directly to a rocker.
  • the bearing portion 13 forms a U-shaped bracket which connects the finger 14 rigidly with the projection 16.
  • the spring axis of the spring member 7 and the longitudinal axis of the mounting bolt 9 are parallel to the two legs of the bracket.
  • the mounting bolt 9 penetrates for attachment to the filler 8 the web 15, which forms the bottom of the bracket.
  • the finger 14 projects from the radially outer leg of the bracket outward, and the projection 16 protrudes from the inner leg of the bracket radially inward.
  • the finger 14 and the projection 16 protrude from the free, remote from the bottom of the bracket end of the respective leg and based on the two legs at the same height.
  • the tilting axis R is therefore formed at least to a good approximation radially below the clamping gap F.
  • the rocker arm between the tilting axis R and the nip F extends in straight extension to the channel wall 1a, so that a clamping gap F forming surface area of the finger 14 of the clamping gap F co-forming clamping surface of the channel wall 1a at the insertion of the Abbugugs in the right Angle tilts.
  • the bearing portion 13 is enclosed in the receiving space between two radially opposite walls 1d with a small clearance.
  • the game is chosen so that the location of the clamping gap F is precisely predetermined, on the other hand, however, the tilting movements are not hindered.
  • the game is at most 0.1 mm, preferably it is only a few hundredths of a millimeter.
  • the receiving space extends with respect to the clamping surface of the leading channel wall 1a below the level of the clamping surface. At the same time, the receiving space could alternatively extend below the level of the clamping surface of the trailing channel wall 1b.
  • the walls 1d forming the receiving space are preferably approximately perpendicular to the channel wall 1a, d. H.
  • the walls 1d are advantageously parallel to each other.
  • the bearing portion 13 is in its bow portion to its side facing away from the finger 14 side, d. H. towards a channel wall 1e, tapered, so that the bracket can not hinder the tilting movements.
  • the channel wall 1e is preferably approximately parallel to the leading or trailing channel wall 1a, 1b and, alternatively or additionally, approximately perpendicular to the walls 1d.
  • the mounting bolt 9 is bordered by the web 15 of the clamping piece 11. It is also true for these edging formed by the web 15 that it has just enough play that the tilting movements of the clamping piece 11 are not obstructed.
  • the two enclosures namely on the one hand, the enclosure through the channel walls 1d and on the other the enclosure of the mounting bolt 9, are realized in combination in the embodiment. In principle, one of the two enclosures would be sufficient, in particular in the clamping piece 12, which surrounds the mounting bolt 9 close to the rocker arm by means of a web 17.
  • the clamping piece 12 differs from the clamping piece 11 only with respect to the direction in which the associated spring member 7 acts on the clamping piece 12. Since the clamping piece 12 is mounted on the same side of the clamping channel as the clamping piece 11, namely on the filler 8, the finger 14 of the clamping piece 12, however, forms the clamping gap with the opposite, trailing channel wall 1b, the spring member 7 can directly on the channel wall 1e support. The spring member 7 acts on the web 17, which connects the only remaining leg of the bracket 11 of the clamping piece with each other. The mounting bolt 9 protrudes through the web 17, as already through the web 15 of the clamping piece eleventh
  • a plurality of the clamping pieces 11 and a plurality of the clamping pieces 12 are arranged in alternating succession at intervals with respect to each other in the clamping channel.
  • each one of the clamping pieces 11 is arranged close to one of the clamping pieces 12, and between the arrangement according to the pairs formed in each case remains a greater distance.
  • the fingers 14 arranged in the same clamping channel clamping pieces 11 and 12 overlap each other in the circumferential direction of the forme cylinder, d. H. they are in an axial flight. They overlap each other to a greater extent, preferably for the most part, in both extreme tilt positions, d. H. both in the tilted position that they occupy prior to insertion of the associated Abbugs 3 or 5, as well as in the tilted position they take when the assigned Abbug 3 or 5 is clamped. In this way, the narrow space in the circumferential direction, which remains between the channel walls 1a and 1b, in the sense of maximum rigidity of the clamping pieces 11 and 12 is used.
  • the bends 3 are the non-clamping clamping pieces 12 and the bends 5 are the non-clamping clamping pieces 12 opposite each provided with a recess 6.
  • the clamping pieces 11 When clamping the respectively associated Abbugs, for example when clamping the Abbugs 3 by the clamping pieces 11, the clamping pieces 11 are tilted in the region of the respective opposite recess 6 to almost against the channel wall 1b.
  • This measure also contributes to the fact that the fingers 14 are as thick as possible and thus the clamping pieces 11 and 12 can be stirred as stiff as possible.
  • the channel walls 1a and 1b move very close to each other and the channel opening are particularly narrow.
  • the clamping device allows a quick change of printing plates 2 and 4 in a simple manner.
  • the printing plate 2 is raised at the respective end and thereby pulled the Abbug 3 from the nip F.
  • the clamping piece 11 tilts against the channel wall 1a due to the spring force.
  • the trailing Abbug the printing plate 2 is pulled out of the nip formed in the opposite clamping channel and the used printing form 2 transported away.
  • a new printing plate 2 for the next production is introduced with one of its two turns in the associated clamping channel.
  • the Abbug 3 is guided in the insertion funnel formed by the finger 14 in the direction of the bottom of the insertion funnel and thus in the direction of the nip F and finally inserted by pressure in the nip F. This is done in the context of a continuous insertion movement of the short Abbüg 3.
  • the Abbug 3, and also the other Abbugen the printing plates 2 and 4 has a measured along the channel wall 1 a height of preferably at most 10 mm, more preferably at most 9 mm.
  • the register device comprises at least one register cam, preferably exactly one register cam, per printing form 2 and 4 and takes care of itself known manner for setting the page register.
  • the printing form 2 passes only after the successful in this way adjustment of the side register in the nip F, ie for clamping the Abbugt 3 is only the foremost area available.
  • a further advantage in particular with regard to an automatic printing plate change, is the free tilting mobility during insertion against and during withdrawal supported by the spring force.

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

Claims (20)

  1. Dispositif pour serrer au moins un film d'impression pliable sur un cylindre d'impression, le dispositif comportant :
    a) une pièce de serrage (11, 12) agencée dans un canal de serrage du cylindre d'impression (1) et formant avec une face de serrage un espace de serrage (F) dans lequel un pli (3, 5) du film d'impression (2, 3) peut être inséré,
    b) et un élément de ressort (7) pour appliquer une force élastique sur la pièce de serrage (11, 12),
    c) une surface extérieure de la pièce de serrage (11, 12) venant en butée contre un point d'appui formé dans le canal de serrage, ledit point d'appui supportant la pièce de serrage (11, 12) de manière à pouvoir basculer contre la force élastique de la face de serrage,
    caractérisé en ce que
    d) la pièce de serrage (11, 12) est montée au moyen d'un boulon de montage (9) et est sollicitée par la force élastique dans une direction longitudinale du boulon de montage (9).
  2. Dispositif selon la revendication 1, caractérisé en ce que la pièce de serrage (11, 12) est poussée contre le point d'appui par la force élastique.
  3. Dispositif selon la revendication précédente, caractérisé en ce que la force élastique agissant sur la pièce de serrage (11, 12) et la force de la pièce de serrage (11, 12) agissant sur le point d'appui ont une composante directionnelle commune.
  4. Dispositif selon l'une des deux revendications précédentes, caractérisé en ce que la force agissant sur la face de serrage dans l'espace de serrage (F) et la force agissant sur le point d'appui ont une composante directionnelle commune.
  5. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la pièce de serrage (11, 12) a le degré de liberté de mouvement uniquement en basculement autour d'un axe de basculement (R) formé par le contact avec le point d'appui.
  6. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la pièce de serrage (11, 12) a au moins un contact sensiblement uniquement linéaire avec le point d'appui.
  7. Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'une arête formée sur la pièce de serrage ou de préférence dans le canal de serrage forme le point d'appui.
  8. Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'une des parois (1a à 1e) du canal de serrage entourant la pièce de serrage (11, 12) forme le point d'appui.
  9. Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'un culbuteur formé par la pièce de serrage (11, 12), s'étendant depuis un axe de basculement (R) de la pièce de serrage (11, 12) jusqu'à l'espace de serrage (F), est au moins sensiblement parallèle à la face de serrage.
  10. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la pièce de serrage (11, 12) ne forme qu'un seul espace de serrage (F) dont la largeur représente de préférence au plus 10 % de la largeur d'un film d'impression à serrer (2, 3) de largeur simple.
  11. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la pièce de serrage (11, 12) comporte une partie d'appui (13) pour un montage de la pièce de serrage (11, 12), de préférence l'appui de basculement, et un doigt (14) faisant saillie depuis la partie d'appui (13) vers l'extérieur en direction d'une ouverture du canal de serrage, ledit doigt formant l'espace de serrage (F) avec la face de serrage.
  12. Dispositif selon la revendication précédente, caractérisé en ce que l'élément de ressort (7) est supporté dans le canal de serrage et agit sur la pièce de serrage dans la zone de la partie d'appui (13), de préférence en faisant saillie dans la partie d'appui (13).
  13. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la pièce de serrage (11, 12) fait saillie dans une cavité (18) formée dans le canal de serrage, de préférence une gorge s'étendant au moins sur la plus grande partie de la longueur du canal de serrage, et une zone de rebord de la cavité, de préférence une arête, forme le point d'appui, l'espace entre la pièce de serrage (11, 12) et le fond de la cavité (18) restant libre.
  14. Dispositif selon l'une des revendications précédentes, caractérisé en ce que dans le canal de serrage (1a à 1e) est agencé au moins un corps de repérage pour le réglage du repère latéral du film d'impression (2, 4) axialement décalé par rapport à la pièce de serrage (11, 12), et que le corps de repérage a une distance par rapport à une ouverture formée sur la périphérie du cylindre d'impression (1) du canal de serrage (1a à 1e) plus petite que l'espace de serrage (F), de telle sorte que le film d'impression (2, 4) vient en contact avec le corps de repérage lors de l'introduction dans le canal de serrage (1a à 1e) avant que la pièce de serrage (11, 12) ne serre celui-ci.
  15. Dispositif selon l'une des revendications précédentes, caractérisé en ce que dans le canal de serrage est agencée une autre pièce de serrage (12, 11) et forme un espace de serrage (F) avec une autre face de serrage en appliquant une force élastique, espace dans lequel peut être introduit un pli (5, 3) du même film d'impression ou d'un autre film d'impression (3, 2), de sorte qu'une surface extérieure de l'autre pièce de serrage (12, 11) heurte un autre point d'appui formé dans l'autre pièce de serrage, la pièce de serrage (12, 11) étant supportée de manière à pouvoir basculer contre la force élastique de l'autre face de serrage.
  16. Dispositif selon la revendication précédente, caractérisé en ce qu'une autre paroi (1b, 1a) du canal de serrage, s'étendant de manière au moins sensiblement radiale jusqu'à une ouverture du canal de serrage par rapport à l'axe de rotation du cylindre d'impression (1), forme l'autre face de serrage.
  17. Dispositif selon la revendication précédente, caractérisé en ce que les parois (1a, 1b) formant les faces de serrage sont espacées l'une de l'autre jusqu'à l'ouverture de manière au moins sensiblement parallèle, la distance ou une plus grande distance étant de préférence d'au plus 5 mm.
  18. Dispositif selon l'une des trois revendications précédentes, caractérisé en ce que le pli (3, 5) comporte un évidement (6) dans lequel chacune des pièces de serrage (11, 12) fait saillie à l'état serré, sans qu'elle ne serre le pli.
  19. Dispositif selon l'une des quatre revendications précédentes, caractérisé en ce que les pièces de serrage (11, 12) se chevauchent dans une direction circonférentielle du cylindre d'impression (1) au moins dans la zone de l'espace de serrage (F) formée par celles-ci jusqu'à une partie plus grande, de préférence jusqu'à une partie prépondérante.
  20. Dispositif selon l'une des revendications précédentes, caractérisé en ce que dans le canal de serrage sont agencées plusieurs pièces de serrage (11, 12) pouvant être basculées individuellement et formant chacune un espace de serrage (F) avec la face de serrage, et que les pièces de serrage (11, 12) sont associées à des éléments de ressort (7), chacun de ceux-ci n'agissant respectivement que sur l'une des pièces de serrage (11, 12).
EP07786026A 2006-07-12 2007-07-12 Dispositif de serrage muni d'une pièce de serrage inclinable Not-in-force EP2040927B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006032264A DE102006032264A1 (de) 2006-07-12 2006-07-12 Klemmvorrichtung mit kippbarem Klemmstück
PCT/EP2007/006194 WO2008006585A1 (fr) 2006-07-12 2007-07-12 Dispositif de serrage muni d'une pièce de serrage inclinable

Publications (2)

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EP2040927A1 EP2040927A1 (fr) 2009-04-01
EP2040927B1 true EP2040927B1 (fr) 2009-12-09

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EP07786026A Not-in-force EP2040927B1 (fr) 2006-07-12 2007-07-12 Dispositif de serrage muni d'une pièce de serrage inclinable

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EP (1) EP2040927B1 (fr)
AT (1) ATE451241T1 (fr)
DE (2) DE102006032264A1 (fr)
WO (1) WO2008006585A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007054935A1 (de) * 2007-11-17 2009-05-20 Manroland Ag Druckmaschinenzylinder
DE102008042703B4 (de) * 2008-10-09 2011-04-07 Koenig & Bauer Aktiengesellschaft Formzylinder einer Druckmaschine und ein Verfahren zum Aufplatten mindestens einer biegsamen Druckform

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5010818A (en) * 1988-02-29 1991-04-30 Rockwell International Corporation Tensionless plate lock-up
DE4225949C2 (de) * 1992-08-06 1994-10-13 Roland Man Druckmasch Vorrichtung zum Befestigen einer biegsamen Druckplatte
DE19924784C2 (de) * 1999-05-29 2001-05-31 Koenig & Bauer Ag Vorrichtung zum Befestigen von biegsamen Platten auf einem Zylinder einer Rotationsdruckmaschine mit Drehrichtungsumkehr
DE10058996C1 (de) * 2000-11-28 2002-06-13 Koenig & Bauer Ag Vorrichtung zur Befestigung eines Aufzuges
DE20022737U1 (de) * 2000-12-04 2002-03-14 Koenig & Bauer AG, 97080 Würzburg Vorrichtung zum Befestigen eines Aufzuges auf einem Zylinder
DE20220291U1 (de) * 2001-10-05 2003-05-28 Koenig & Bauer AG, 97080 Würzburg Rollenrotationsdruckmaschine
DE10218474A1 (de) * 2002-04-25 2003-11-20 Koenig & Bauer Ag Vorrichtungen zum Befestigen von mindestens einem Aufzug auf einem Zylinder einer Rotationsdruckmaschine und ein Druckwerk mit dieser Vorrichtung
DE10220548B4 (de) * 2002-05-08 2004-05-27 Koenig & Bauer Ag Befestigung eines biegsamen Aufzugs auf einem Zylinder einer Rotationsdruckmaschine
DE10244944B4 (de) * 2002-09-26 2005-01-27 Maschinenfabrik Wifag Klemmvorrichtung zum Klemmen einer flexiblen Bespannung eines Zylinders einer Druckmaschine
DE102005029167A1 (de) * 2005-06-23 2006-12-28 Maschinenfabrik Wifag Druckzylinderbelag, Kombination aus Druckzylinder und Druckzylinderbelag sowie Druckzylinder mit klemmend befestigtem Druckzylinderbelag
DE102006062743B4 (de) * 2005-06-28 2010-10-14 Koenig & Bauer Aktiengesellschaft Zylinder einer Rotatiosdruckmaschine mit mindestens einem sich in Axialrichtung dieses Zylinders unter dessen Mantelfläche erstreckenden Kanal

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Publication number Publication date
ATE451241T1 (de) 2009-12-15
WO2008006585A1 (fr) 2008-01-17
DE102006032264A1 (de) 2008-01-17
DE502007002279D1 (fr) 2010-01-21
EP2040927A1 (fr) 2009-04-01

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