EP1501679A1 - Element de levage flexible pour cylindre de presse rotative - Google Patents

Element de levage flexible pour cylindre de presse rotative

Info

Publication number
EP1501679A1
EP1501679A1 EP03729872A EP03729872A EP1501679A1 EP 1501679 A1 EP1501679 A1 EP 1501679A1 EP 03729872 A EP03729872 A EP 03729872A EP 03729872 A EP03729872 A EP 03729872A EP 1501679 A1 EP1501679 A1 EP 1501679A1
Authority
EP
European Patent Office
Prior art keywords
leg
elevator
cylinder
wall
opening
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Withdrawn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
EP03729872A
Other languages
German (de)
English (en)
Inventor
Georg Schneider
Karl Robert SCHÄFER
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer 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 Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP1501679A1 publication Critical patent/EP1501679A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1281—Devices for attaching printing elements or formes to supports for attaching flexible printing formes details of the printing plate ends

Definitions

  • the invention relates to a flexible elevator for use on a cylinder of a rotary printing press according to the preamble of claim 1.
  • DE 199 24 784 A1 discloses a device for tensioning and / or clamping flexible plates on a cylinder having slot fastenings, movable clamping and / or clamping elements being provided in the interior of a cylinder pit, which have a bent end inserted into the cylinder pit flexible plate clamps and / or clamps.
  • the invention has for its object to provide a flexible elevator for use on a cylinder of a rotary printing press.
  • the advantages that can be achieved with the invention are, in particular, that the folded end of the plate-shaped elevator can be held in a form-fitting manner in a slot fastening, as a result of which the reliability of the clamping and / or tensioning of the elevator carried out in the slot fastening is improved.
  • the proposed design of the elevator is due to its positive fit Bracket still increased security against its unintentional detachment from the cylinder, which could otherwise easily happen because the elevator was bent to adapt to the curvature of the outer surface of the cylinder against elastic resistance and therefore under mechanical tension stands, which strives to return the elevator to its straight extended position.
  • the hanging edge is stiffened, which significantly reduces the risk of damage, for example due to unintentional kinking or bending.
  • a radius resulting from the stiffening at the hooking edge also facilitates threading the hooking edge into a slot fastening.
  • the higher protection against unintentional bending of the hooking edge and its easier threading into the slot fastening is particularly relevant when using an automatic plate changer or an automatic feed device for the elevator to a cylinder. Due to the radius given by the flanging, the hooking edge is also no longer sharp-edged, as a result of which the risk of injury, in particular cut injury, is reduced for an operator who is handling the elevator.
  • Fig. 2 shows an elevator with a partially stiffened hooking edge in the released operating state.
  • 1 and 2 is on a lateral surface 02 of a cylinder 01 a z. B. designed as a plate-shaped printing form elevator 03 in that two in Circumferential direction of the cylinder 01 opposite ends of the elevator 03 bent legs 04; 05 is inserted into a channel 06 arranged in the cylinder 01, which has an opening 07 directed towards the lateral surface 02 of the cylinder 01, and there essentially on the walls 08; 09 the opening 07 are created. If several elevators 03 are applied in the circumferential direction of the cylinder 01, the section of the cylinder 01 shown in FIGS.
  • FIG. 1 and 2 shows a leading end 11 of a first elevator 03 and a trailing end 12 of an elevator 03 following in the circumferential direction of the cylinder 01, whereby both ends 11 shown; 12 of the elevators in the same channel 06 of the cylinder 01 are attached.
  • the folded leg 04; 05 of the elevators or the elevator 03 can also partially rest on the wall 10 of the channel 06 following the area of the opening 07 and lying deeper inside the cylinder 01, because the boundary between the walls 08; 09 of the opening 07 and the wall 10 of the channel 06 runs smoothly.
  • the insertion depth of the legs 04; 05 is not exactly defined, but encompasses a larger tolerance range.
  • the channel 06 can have different cross-sectional geometries without influencing the invention, but a circular cross-section is favorable in terms of production technology.
  • the elevator can also be designed as a printing blanket applied to a thin carrier plate.
  • At least the ends of the plate-like printing form or the support plate of the printing blanket consist of a metallic material, for example an aluminum alloy.
  • the material thickness D of the legs 04 bent at the ends of the elevator 03 is usually; 05 a few tenths of a millimeter, e.g. B. in the range of 0.2 mm to 0.4 mm, preferably 0.3 mm.
  • the elevator 03 to be fastened on the lateral surface 02 of the cylinder 01 is as a rule a flat, rectangular piece of material, which is flexible in such a way that the elevator 03 is adaptable against elastic resistance to the curvature of the lateral surface 02 of the cylinder 01 this elevator 03 in its shape and structure of solid, stable nature. It is made of a hard, consistent material. At least the ends 11; 12 of the elevator 03 are designed to be dimensionally stable in such a way that they can be folded and thus provided with a permanent edge by means of a bend. The material therefore has at the ends 11; 12 a certain rigidity and rigidity, so that a permanent change in shape can be formed by bending against a material-specific resistance.
  • practice has shown that in the case of a conventionally designed elevator, when handling while it is being fastened on the lateral surface 02 of a cylinder 01, this resistance can inadvertently be overcome all too easily.
  • the elevator 03 to be fastened on the cylinder 01 has a leading end 11 and a trailing end 12, each with a bent leg 04; 05 on.
  • the opening 07 of the channel 06 has a front edge 13 seen in the production direction P of the cylinder 01, from which a wall 08 extends to the channel 06, this wall 08 also being referred to as a first wall 08, and a rear edge 14 , from which a wall 09 also extends to the channel 06, this wall 09 being called the second wall 09.
  • This rear edge 14 can also be rounded or beveled by means of a chamfer for easier insertion of the folded leg 05 into the opening 07.
  • the opening 07 on the lateral surface 02 of the cylinder 01 is long and narrow and thus slit-shaped, the slot width S being small compared to the depth t of the channel 06, which can be 30 mm, for example, and dimensioned such that a leg 04 a leading end 11 of an elevator 03 and a leg 05 of a trailing end 12 of the same or - in the case of several elevators fastened in the circumferential direction of the cylinder 01 - a similar elevator 03 in the opening 07 can be arranged one behind the other.
  • Slot widths S of less than 5 mm are advantageous, preferably in the range from 1 mm to 3 mm.
  • An acute angle ⁇ is formed between the wall 08 extending from the front edge 13 to the channel 06 and an imaginary tangent T lying on the lateral surface 02 of the cylinder 01 on the opening 07, which angle is between 40 ° and 50 °, preferably 45 ° is.
  • the slot width S of the opening 07 thus tapers towards the lateral surface 02 of the cylinder 01 and increases towards the channel 06.
  • the leg 04 of the leading end 11 of the elevator 03 can be hung on the front edge 13 of the opening 07, so that this leg 04 preferably bears in a form-fitting manner on the wall 08 extending from the front edge 13 to the channel 06.
  • the wall 09 on the rear edge 14 of the opening 07 falls approximately perpendicular to the channel
  • the wall 09 can also be slightly inclined, so that the opening
  • An angle ⁇ which is the opening angle between the wall 09 extending from the rear edge 14 to the channel 06 and the already mentioned tangent T lying on the lateral surface 02 of the cylinder 01 on the opening 07, is, for example, in the range between 80 ° and 95 ° and is preferably 90 °.
  • the leg 05 applied to this wall 09 is preferred folded at the same angle ß. It is advantageous to fold the leg 05 between 80 ° to 85 °, in particular 83 °.
  • the base body 15 in the channel 06 there is preferably a base body 15 in the channel 06, the cross-sectional geometry of which is adapted to the cross-sectional geometry of the channel 06 and is supported on the wall 10 of the channel 06.
  • the channel 06 has a circular cross section.
  • the base body 15 is designed here in the form of a cylindrical hollow body which is open towards the opening 07 and spans, for example, a three-quarter circle in cross section, extends axially to the cylinder 01 in the channel 06, and its diameter is adapted to the channel 06.
  • the base body 15 has two legs 28 along its longitudinal extent; 29 each with a sectional area A; B, wherein at least the sectional area A on that leg 28 of the base body 15, which is located on the side of the channel 06 to which the trailing end 12 of the elevator 03 is fastened, falls at the same angle to the base 16 of the channel 06 as that wall 09 extending from the rear edge 14 to the channel 06, so that this cut surface A can be flush with the wall 09 extending from the rear edge 14 to the channel 06.
  • This cut surface A on the leg 28 of the base body 15 is determined in its extent by the length and wall thickness W of the hollow body. It preferably falls perpendicular to the bottom 16 of the channel 06.
  • both clamping pieces 17; 18 are levee-shaped and are arranged opposite one another in the interior of the base body 15.
  • the first clamp 17 has z.
  • a spring element 22 is also clamped between the second clamping piece 18 and the base body 15, so that this second element Clamping piece 18 with, for example, a cantilevered arm 20 pressed onto a clamping roller 24 mounted on a shoulder 23 of the first clamping piece 17, this clamping roller 24 in turn clamping the bent leg 04 of an elevator 03, which extends from the front edge 13 to Channel 06 extending wall 08 is created.
  • Both spring elements 21; 22 can e.g. B. as a helical compression spring 21; 22 formed and between the base body 15 and the respective clamping piece 17; 18 can be clamped parallel to the tangent T lying on the opening 07.
  • a between the two opposing clamping pieces 17; 18 arranged adjusting means 25 brings a counterforce to the two spring elements 21; 22, with which the adjusting means 25 has a direction of action directed essentially in the direction of the circumference of the cylinder 01, so that the arms 19; 20 exerted clamps if necessary by simultaneously pivoting the clamping pieces 17; 18 can be solved.
  • the actuating means 25 is preferably a hose 25 running in the longitudinal direction of the channel 06, which is connected to a pressure medium, for. B. compressed air can be applied.
  • the adjusting means 25 can also be implemented by an electric, hydraulic or other drive.
  • FIG. 1 now shows an elevator 03 designed as a flexible plate with an approximately right-angled leg 05 at the trailing end 12 of the elevator 03, which on the wall 09 extending from the rear edge 14 to the channel 06 and on the cut surface A , which forms a non-offset, flat support surface for the leg 05 inserted into the opening 07 with the aforementioned wall 09 towards the channel 06, and is clamped with the projecting arm 19 of the first clamping piece 17 on the cut surface A on the leg 28 of the base body 15 ,
  • This clamped leg 05 at the trailing end 12 of the elevator 03 is stiffened, preferably flanged, such that its edge is bent through 180 ° to the side facing away from the projecting arm 19 of the first clamping piece 17.
  • This configuration is this leg 05 stiffened in two layers over the entire surface with which it rests on the wall 09 extending from the rear edge 14 to the channel 06 and on the cut surface A and has a curve at its bend, through which it is easier and for an operator can be inserted into the opening 07 without the risk of a cut.
  • the hanging edge of the leg 05 is therefore formed in two layers and thereby stiffened. If the end 11; 12 of the elevator 03 is to be stiffened even more, this end 11; 12 can also be bent several times, the bends being able to take place in the same direction, so that a spiral winding of the end 11; 12 results, or they take place alternately in opposite directions, so that the end 11; 12 has a meandering winding.
  • a bead 26 directed toward the opening 07 is formed, into which a flanged edge of the leg 05 at the trailing end 12 of the elevator 03 can dip after this leg 05 has been inserted into the opening 07.
  • the bead 26 is accordingly a trough-shaped recess for receiving the leg 05 of the elevator 03 inserted into the opening 07.
  • This leg 05 is then moved by a pivoting movement of the first clamping piece 17 on the wall 09 extending from the rear edge 14 to the channel 06 and on the cut surface A which is flush with this wall 09 is placed on the leg 28 of the base body 15 and with a support surface F formed on the arm 19 of the first clamping piece 17 on the cut surface A of the base body 15 by the force of one on the first clamping piece 17 acting spring element 21 pressed.
  • the bead 26 is accordingly attached to or formed on the first clamping piece 17 such that it can be pivoted by the pivoting movement of the first clamping piece 17 under the leg 28 of the base body 15 or along the inner wall 27 thereof, or in other words: during the clamping of the leg 05 of the elevator 03 closes the leg 28 of the base body 15, the bead 26, whereby the leg 05 of the elevator 03 locks due to its flanging at its edge and is thus secured against unintentional loosening.
  • the bead 26 is somewhat wider than the flanged edge of the leg 05, the thickness of this flanged edge resulting at least from twice the material thickness D of the leg 05.
  • the material thickness D of the leg 05 is, for example, in the range from 0.2 mm to 0.4 mm, in particular 0.3 mm.
  • the stiffened edge of the leg 05 of the elevator 03 is bent through 180 ° to the side facing away from the projecting arm 19 of the first clamping piece 17, the bent end of the leg 05 extending only a short distance in the direction of the rear edge 14 of the opening 07 , so that the leg 05 is only partially formed in two layers.
  • the leg 05 is thus to the wall 08; 09 bent, on which the leg 05, with its non-stiffened area, preferably bears positively.
  • the leg 05 is therefore only stiffened at its edge. If the leg 05 of the end of the elevator 03 inserted into the opening 07 has the length 13, a stiffening of this leg 05 should be stiffened with a length 14 at its edge, the length 14 being at most% of the length of 13.
  • the edge of the leg 05 is intended to reduce the sharpness of the leg 05 at its end and - as will be explained in the following - provide a stop directed towards the lateral surface 02, which extends essentially from the inside of the channel 06 in a radial direction under the Wall 09 engages.
  • the absolute length of 13 is, for example, in the range from 6 mm to 15 mm, in particular between 8 mm and 12 mm, with the shorter lengths being preferred in order to be as simple as possible Threading the leg 05 into the opening 07 and ensuring an equally easy removal from the same.
  • the length 14 is greater than% of the length of 13, either the wall 09 is too narrow in its dimension between the outer surface 02 of the cylinder 01 and the wall 10 of the channel 06, or the length 13 would have to be made excessively large, but this is the case the insertion of the leg 05 into the opening 07 and the removal from it would be a hindrance.
  • the length 13 is chosen such that z. B. can bend the leg 05 at its edge still cheap. The bending is preferably carried out in such a way that the part of the leg 05 forming the stiffening runs approximately parallel to the length 13 of the leg 05 and z. B. rests on the back of the leg 05 or is separated only by a narrow gap from the back of the leg 05.
  • the bent end of the leg 05 dips into the bead 26 and at the same time engages from the inside of the base body 15 under or on its inner wall 27.
  • the first clamping piece 17 with its cantilevered arm 19 supports the leg 05 of the elevator 03, which extends from the rear edge 14 to the channel 06 and the section 05 of the elevator 03, by means of the force exerted by the spring element 21 on the first clamping piece 17 Section A of the base body 15 presses and thus clamps, the leg 05 of the elevator 03 fastened with this clamping is simultaneously secured against unintentional removal from the opening 07 in that the bent edge of this leg 05 hooks onto the base body 15 with a stop.
  • the second clamping piece 18 clamps in the manner already described, via a clamping roller 24, the leg 04 inserted into the opening 07 at the leading end 11 of the elevator 03 to the wall 08 extending from the front edge 13 to the channel 06, to which this leg 04 of the elevator 03 is preferably applied in a form-fitting manner. Because in this example the cantilever arm 19 of the first clamping piece 17 has a large volume due to the required depth of the bead 26 formed on it, in FIG. 1 the cantilever arm 19 of the first clamping piece 17 covers the cantilever arm 20 of the second clamping piece 18.
  • FIG. 2 shows the released operating state for the leg 05 of the elevator 03 shown clamped in FIG. 1.
  • the actuating means 25 is actuated, whereupon the first clamping piece 17 pivots back so far against the force of the spring element 21 that the bead 26 is released towards the opening 07 of the channel 06 and the leg 05 of the elevator 03 with an inner wall 30 of the bead 26 from which from the rear edge 14 to the channel 06 extending wall 09 is pressed so far that the leg 05 can be removed from the opening 07 or automatically jumps out of the opening 07 due to the internal stress of the elevator 03.
  • the leg 05 is stiffened preferably by flanging the end thereof.
  • the stiffening can also be achieved in that, for example, a strip of a rigid, solid material is applied to the leg 05 in a material-locking or form-locking manner.
  • the leg, together with its stiffening has a thickness that is less than the slot width S of the opening 07, so that the leg 05 can be easily threaded into the opening 07.
  • the thickness of the stiffened leg 05 is at trailing end 12 of the elevator 03 is less than the difference between the slot width S of the opening 07 and the material thickness D of the leg 04 at the trailing end 11 of the elevator 03.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)

Abstract

L'invention concerne un élément de levage (03) flexible pour cylindre (01) de presse rotative, cet élément étant doté, à son extrémité (12) entraînée dans le sens de production (P) du cylindre, d'une branche (05) repliée sensiblement à angle droit et partiellement renforcée, notamment par un bord rabattu. Lorsqu'il est monté, l'élément de levage est fixé sur la surface (0) latérale du cylindre pour qu'il ne se détache pas inopinément, la branche et son renforcement étant accrochés, par ex., à la paroi (09, 27) d'une ouverture (07) placée à la surface latérale du cylindre.
EP03729872A 2002-05-08 2003-05-08 Element de levage flexible pour cylindre de presse rotative Withdrawn EP1501679A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2002120548 DE10220548B4 (de) 2002-05-08 2002-05-08 Befestigung eines biegsamen Aufzugs auf einem Zylinder einer Rotationsdruckmaschine
DE10220548 2002-05-08
PCT/DE2003/001472 WO2003095209A1 (fr) 2002-05-08 2003-05-08 Element de levage flexible pour cylindre de presse rotative

Publications (1)

Publication Number Publication Date
EP1501679A1 true EP1501679A1 (fr) 2005-02-02

Family

ID=29285209

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03729872A Withdrawn EP1501679A1 (fr) 2002-05-08 2003-05-08 Element de levage flexible pour cylindre de presse rotative

Country Status (4)

Country Link
EP (1) EP1501679A1 (fr)
AU (1) AU2003240414A1 (fr)
DE (1) DE10220548B4 (fr)
WO (1) WO2003095209A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006032264A1 (de) * 2006-07-12 2008-01-17 Maschinenfabrik Wifag Klemmvorrichtung mit kippbarem Klemmstück
DE102006032263B3 (de) * 2006-07-12 2008-01-31 Maschinenfabrik Wifag Klemmvorrichtung mit überlappenden Klemmmitteln
DE102011108356A1 (de) * 2011-07-22 2013-01-24 Manroland Web Systems Gmbh Druckbildübertragungsplatte

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE407871C (de) * 1922-02-24 1925-01-03 A W Penrose & Co Ltd Verfahren zum Befestigen eines Druckbleches auf einem Formzylinder und Formzylinder zur Ausfuehrung des Verfahrens
DE431764C (de) * 1924-06-26 1926-07-17 A W Penrose & Company Ltd Vorrichtung zum Befestigen biegsamer Tiefdruckplatten bei Rotationsdruckmaschinen
US2937593A (en) * 1954-12-23 1960-05-24 Ritzerfeld Wilhelm Printing foil attaching arrangement
US3217644A (en) * 1962-03-30 1965-11-16 Mosstype Corp Clamping means for mounting carrier sheets on flat or round surfaces
US3332346A (en) * 1966-07-29 1967-07-25 Cottrell Company Blanket lockup means for offset or wraparound ink blankets
DE3340144A1 (de) * 1983-11-07 1985-05-23 2B-Präzisionstechnik GmbH, 8000 München Offsetplattenbiegemaschine zum biegen von druckplatten mit einer drahteinrollvorrichtung fuer rollenoffsetrotationsmaschinen
DE3401760A1 (de) * 1984-01-19 1985-08-01 Albert-Frankenthal Ag, 6710 Frankenthal Vorrichtung zum spannen von druckplatten
GB8720815D0 (en) * 1987-09-04 1987-10-14 Drg Uk Ltd Printing plate
DE9204004U1 (de) * 1992-03-25 1992-07-16 Vellmanns, Georg, 4137 Rheurdt Haltestange
DE4404758C2 (de) * 1994-02-15 1996-06-27 Roland Man Druckmasch Verfahren und Vorrichtung zum Wechseln der Bespannung eines Zylinders einer Rollenrotationsdruckmaschine
DE4425189C1 (de) * 1994-07-16 1996-02-01 Koenig & Bauer Albert Ag Verfahren und Vorrichtung zum Befestigen und Spannen eines Aufzuges auf einem Zylinder einer Rotationsdruckmaschine
DE19924784C2 (de) * 1999-05-29 2001-05-31 Koenig & Bauer Ag Vorrichtung zum Befestigen von biegsamen Platten auf einem Zylinder einer Rotationsdruckmaschine mit Drehrichtungsumkehr
DE19924787B4 (de) * 1999-05-29 2004-11-04 Koenig & Bauer Ag Vorrichtung zum Befestigen biegsamer Platten

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03095209A1 *

Also Published As

Publication number Publication date
AU2003240414A1 (en) 2003-11-11
DE10220548A1 (de) 2003-11-27
DE10220548B4 (de) 2004-05-27
WO2003095209A1 (fr) 2003-11-20

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