WO2003095208A1 - Dispositif pour fixer au moins un élément de levage flexible - Google Patents

Dispositif pour fixer au moins un élément de levage flexible Download PDF

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Publication number
WO2003095208A1
WO2003095208A1 PCT/DE2003/001471 DE0301471W WO03095208A1 WO 2003095208 A1 WO2003095208 A1 WO 2003095208A1 DE 0301471 W DE0301471 W DE 0301471W WO 03095208 A1 WO03095208 A1 WO 03095208A1
Authority
WO
WIPO (PCT)
Prior art keywords
leg
channel
opening
wall
base body
Prior art date
Application number
PCT/DE2003/001471
Other languages
German (de)
English (en)
Inventor
Georg Schneider
Karl Robert SCHÄFER
Original Assignee
Koenig And Bauer Aktiengesellschaft
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 Aktiengesellschaft filed Critical Koenig And Bauer Aktiengesellschaft
Priority to AU2003240413A priority Critical patent/AU2003240413A1/en
Priority to EP03729871A priority patent/EP1526969A1/fr
Publication of WO2003095208A1 publication Critical patent/WO2003095208A1/fr

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
    • B41F27/1262—Devices for attaching printing elements or formes to supports for attaching flexible printing formes without tensioning 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
    • B41F27/12—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 device for fastening at least one flexible elevator with at least one bent leg on a lateral surface of a cylinder of a rotary printing press according to the preamble of claim 1 or 2.
  • DE 19924784 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 and having a bent end of a flexible plate inserted into the cylinder pit tense and / or jammed.
  • DE 19924787 A1 discloses a device for clamping and releasing flexible plates with folded-in hanging legs, in which two interacting strips are provided in a cross-sectional area running axially to the channel, each of which is acted upon by a spring in opposite directions, both of which act on one another Support the springs with one end each on an inner wall of a base body arranged in the channel.
  • a device for attaching a flexible printing plate to the plate cylinder of a rotary printing press in which the plate cylinder has an axially extending channel in which a hollow shaft equipped with a recess and a shaft are rotatably arranged coaxially, with the Shaft is connected to a strip which extends through the hollow shaft and clamps the angled edge of the pressure plate which rests against a side surface of the channel.
  • a side surface of the recess of the hollow shaft can be equipped with a shoulder that engages over an additional edge formed on the angled edge of the pressure plate.
  • the invention has for its object to provide a device for fastening at least one flexible elevator with at least one bent leg on a lateral surface of a cylinder of a rotary printing press.
  • the object is achieved by the features of claim 1 or 2.
  • 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 release 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 is therefore under a mechanical tension, which tends to the elevator back to its just stretched starting 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.
  • 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.
  • both a clamping of the leg of the elevator inserted into the opening of the cylinder is carried out and also when this clamping is released Removal of the leg hooked into the opening with its stiffening is supported.
  • 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 on two opposite ends in the circumferential direction of the cylinder 01 of the elevator 03 bent leg 04; 05 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 of 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 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.
  • 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 is long and narrow on the lateral surface 02 of the cylinder 01 and is thus slit-shaped, the slot width S compared to the depth t of the channel 06, which, for. B. 30 mm, is small and dimensioned such that a leg 04 of a leading end 11 of an elevator 03 and a leg 05 of a trailing end 12 of the same or - with several elevators attached 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 of 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 opening 07 tapers towards the lateral surface 02 of the cylinder 01 and it widens 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 on the from the front edge 13 to the channel
  • the wall 09 on the rear edge 14 of the opening 07 drops approximately perpendicular to the channel 06.
  • the wall 09 can also be slightly inclined so that the opening 07 widens towards the channel 06.
  • 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 preferably bent at the same angle ⁇ . It is advantageous to fold the leg 05 between 80 ° to 85 °, in particular 83 °.
  • the channel 06 has a circular cross section.
  • the base body 15 is here in the form of an open to the opening 07, in its cross section z. B. formed a three-quarter circle, in the channel 06 axially extending to the cylinder 01 cylindrical hollow body and adapted with its diameter to the channel 06.
  • the base body 15 has two legs 28 along its longitudinal extent; 29 each with one Cutting 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 preferably connect flush to 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 clamping piece 18, for example with a projecting arm 20 molded thereon, presses on a clamping roller 24 mounted on a shoulder 23 of the first clamping piece 17, this clamping roller 24 in turn clamps the bent leg 04 of an elevator 03, which is applied to the wall 08 extending from the front edge 13 to the channel 06.
  • 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.
  • clamping pieces 17; 18 each have a holding element 17; 18, which has a bent leg 04; 05 of an elevator 03 z. B. by a positive fit on the outer surface 02 of the cylinder 01 or at his Training as a clamp 17; 18 - as described by way of example in FIGS. 1 and 2 - is clamped by a frictional connection.
  • 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 actuating means 25 can also be realized by an electrically acting, a hydraulically acting or other remotely operable drive 25 acting in the interior of the channel 06, the drive 25 applying a force to the clamping piece 17 arranged in the channel 06 and the clamping piece 17 for execution a movement associated with a change of position.
  • 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 crimped, such that its edge is bent on the inside by 180 ° to the side facing away from the projecting arm 19 of the first clamping piece 17, ie with reference to the elevator 03.
  • this leg 05 is stiffened in two layers and has a curve on its bend, through which it is easier and for one Operator can be inserted into opening 07 without risk of cut injury.
  • the hanging edge of the leg 05 is therefore formed in two layers and 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 towards the opening 07, into which a preferably stiffened, in particular flanged edge of the leg 05 can dip at the trailing end 12 of the elevator 03 after this leg 05 is 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 driven by a pivoting movement of the first clamping element 17, which extends from the rear edge 14 to the channel 06, by the actuating means 25 Wall 09 as well as on the cut surface A which is flush with this wall 09 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 a spring element 21 acting on the first clamping piece 17.
  • 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, the leg 28 of the base body 15 closes the bead 26, as a result of which the effect of a lock or locking occurs and the leg 05 of the elevator 03 is locked due to its flanging on its edge and is thus secured against unintentional loosening.
  • the bead 26 is somewhat wider than the stiffened edge of the leg 05, the thickness of this stiffened 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 preferably flanged 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, but the bent end of the leg 05 extends only for 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 ie the stiffening in this case reduces the sharpness of the leg 05 at its end and - as will be explained in the following - forms a stop directed towards the lateral surface 02, which essentially extends in the radial direction from the inside of the channel 06 reaches under the wall 09.
  • the clamping piece 17th connected or coupled means of transport can be provided on the leg
  • 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, the shorter lengths being preferred, in order to thread the leg 05 as simply as possible into the opening 07 and to remove it just as easily to ensure from the same. If 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, which is, however 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 absolute length 14 of the leg 05 is also selected such that the elevator 03 is advantageously connected to a feed device, for. B. a plate changing device can be automatically replaced on the cylinder. For this, shorter legs 05 are useful.
  • 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 swings 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 z. B. with an inner wall 30 of the bead 26 or with another correspondingly designed part of the clamping element 17 driven by the actuating means 25 from the wall 09 extending from the rear edge 14 to the channel 06 as far It is pushed away that the leg 05 can be removed from the opening 07 in a simple manner, ie after the hooking has been released, or that it jumps out of the opening 07 automatically due to the inherent tension of the elevator 03.
  • both the clamping is released and at the same time the stiffened leg 05 is conveyed out of the opening 07, the leg 05 being secured in the opening 07 by means of a hook.
  • the leg 05 was stiffened by flaring 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 leg 04 formed at the leading end 11 of the elevator 03 is generally first inserted into the opening 07 and it also preferably has the material thickness D, the thickness of the stiffened leg 05 at the trailing end 12 of the elevator 03 is less than the difference 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.

Abstract

L'invention concerne un dispositif pour fixer au moins un élément de levage (03) flexible comportant au moins une branche (04, 05) repliée sur la surface (02) latérale d'un cylindre (01) de presse rotative. Le cylindre comprend au moins un canal (06) ouvrant (07) au niveau de la surface latérale, cette ouverture ayant un bord (13, 14) dont la paroi s'étend vers le canal. Dans le canal se trouvent au moins un élément de fixation (17, 18), pour fixer la branche introduite dans l'ouverture, et un élément de réglage (25) pour actionner l'élément de fixation. La branche repliée a un bord renforcé, qui forme une butée se mettant en prise sous la paroi à partir de l'intérieur du canal, lorsque ladite branche est fixée. Lorsque la fixation est détachée, l'élément de réglage libère la butée de sa prise.
PCT/DE2003/001471 2002-05-08 2003-05-08 Dispositif pour fixer au moins un élément de levage flexible WO2003095208A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2003240413A AU2003240413A1 (en) 2002-05-08 2003-05-08 Device for fixing at least one flexible lifting element
EP03729871A EP1526969A1 (fr) 2002-05-08 2003-05-08 Dispositif pour fixer au moins un element de levage flexible

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2002120546 DE10220546B4 (de) 2002-05-08 2002-05-08 Vorrichtung zum Befestigen von mindestens einem biegsamen Aufzug mit mindestens einem abgekanteten Schenkel auf einer Mantelfläche eines Zylinders einer Rotationsdruckmaschine
DE10220546.9 2002-05-08

Publications (1)

Publication Number Publication Date
WO2003095208A1 true WO2003095208A1 (fr) 2003-11-20

Family

ID=29285208

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2003/001471 WO2003095208A1 (fr) 2002-05-08 2003-05-08 Dispositif pour fixer au moins un élément de levage flexible

Country Status (4)

Country Link
EP (1) EP1526969A1 (fr)
AU (1) AU2003240413A1 (fr)
DE (1) DE10220546B4 (fr)
WO (1) WO2003095208A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1591249A1 (fr) 2004-04-27 2005-11-02 Müller Martini Holding AG Appareil pour fixer une plaque d'impression sur un cylindre d'impression dans une machine d'impression rotative
DE102004034049A1 (de) * 2004-07-13 2006-02-09 Man Roland Druckmaschinen Ag Formzylinder einer Rollenrotationsdruckmaschine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2937593A (en) 1954-12-23 1960-05-24 Ritzerfeld Wilhelm Printing foil attaching arrangement
US3332646A (en) 1965-11-19 1967-07-25 Louise C Kellett Machine pad
DD262191A1 (de) 1987-07-02 1988-11-23 Polygraph Leipzig Vorrichtung zum befestigen einer biegsamen druckplatte
WO1989001866A1 (fr) 1987-09-04 1989-03-09 Drg (Uk) Limited Plaque d'impression
DE19924784A1 (de) 1999-05-29 2000-12-07 Koenig & Bauer Ag Vorrichtung zum Spannen von biegsamen Platten
DE19924787A1 (de) 1999-05-29 2000-12-07 Koenig & Bauer Ag Verfahren und Vorrichtung zum Klemmen und Lösen von biegsamen Platten

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1087140B (de) * 1958-11-13 1960-08-18 Goebel Gmbh Maschf Vorrichtung zum Spannen von biegsamen Druckplatten, insbesondere Stahlstichplatten
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
DE3401760A1 (de) * 1984-01-19 1985-08-01 Albert-Frankenthal Ag, 6710 Frankenthal Vorrichtung zum spannen von druckplatten
DE4404758C2 (de) * 1994-02-15 1996-06-27 Roland Man Druckmasch Verfahren und Vorrichtung zum Wechseln der Bespannung eines Zylinders einer Rollenrotationsdruckmaschine
DE10003937C2 (de) * 2000-01-29 2003-02-27 Roland Man Druckmasch Vorrichtung zum Befestigen von biegsamen Druckformen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2937593A (en) 1954-12-23 1960-05-24 Ritzerfeld Wilhelm Printing foil attaching arrangement
US3332646A (en) 1965-11-19 1967-07-25 Louise C Kellett Machine pad
DD262191A1 (de) 1987-07-02 1988-11-23 Polygraph Leipzig Vorrichtung zum befestigen einer biegsamen druckplatte
WO1989001866A1 (fr) 1987-09-04 1989-03-09 Drg (Uk) Limited Plaque d'impression
DE19924784A1 (de) 1999-05-29 2000-12-07 Koenig & Bauer Ag Vorrichtung zum Spannen von biegsamen Platten
DE19924787A1 (de) 1999-05-29 2000-12-07 Koenig & Bauer Ag Verfahren und Vorrichtung zum Klemmen und Lösen von biegsamen Platten

Also Published As

Publication number Publication date
EP1526969A1 (fr) 2005-05-04
DE10220546B4 (de) 2004-05-27
DE10220546A1 (de) 2003-11-27
AU2003240413A1 (en) 2003-11-11

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