EP0429004B1 - Dispositif à plier pour plaques d'impression - Google Patents

Dispositif à plier pour plaques d'impression Download PDF

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Publication number
EP0429004B1
EP0429004B1 EP90121862A EP90121862A EP0429004B1 EP 0429004 B1 EP0429004 B1 EP 0429004B1 EP 90121862 A EP90121862 A EP 90121862A EP 90121862 A EP90121862 A EP 90121862A EP 0429004 B1 EP0429004 B1 EP 0429004B1
Authority
EP
European Patent Office
Prior art keywords
edge
machine table
saddle
bending apparatus
folding
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.)
Expired - Lifetime
Application number
EP90121862A
Other languages
German (de)
English (en)
Other versions
EP0429004A1 (fr
Inventor
Claus Dieter Barrois
Philipp Andreas Dieterich
Anna Barbara Ziegler
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 EP0429004A1 publication Critical patent/EP0429004A1/fr
Application granted granted Critical
Publication of EP0429004B1 publication Critical patent/EP0429004B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/20—Bending sheet metal, not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/01—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments
    • 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

Definitions

  • the invention relates to a folding device for the ends of printing plates.
  • an edging device which has an edging strip for each printing plate end and a folding roller which interacts with the edging strip.
  • the edge strips are pivoted about an axis. Movement of the edge strips can, however, lead to non-parallelism between the front and rear edge strips.
  • An advantage of the invention is in particular that tolerance errors in the parallelism that occur between the trailing and leading edge of the printing plate and are caused by the storage of moving parts such. B. movable edging strips can be avoided. In addition, very narrow cylinder pits (z. B. 5 mm) with extremely small clamping paths, as z. B. the Security printing machine construction demands to be realized, since the printing plates can be bent by more than 90 ° on both ends.
  • the pressure plate is at least partially preformed in the clamping area, especially at the critical points. This facilitates the subsequent plate clamping process on the plate cylinder.
  • the printing plate folding device can be adjusted to different format lengths.
  • the saddle 4 for a pressure plate leading edge is firmly connected to the machine table 3 and has an immovable edge strip 13.
  • An angle ⁇ , formed by the bearing surface 11 and an underside 14 of the edge strip 13 is z. B. about 30 °. This means that the front edge of the pressure plate is bent by about 150 ° in the embodiment. Other angles ⁇ are of course possible.
  • the saddle 6 for a pressure plate trailing edge is pivotally mounted. This serves for a possible format setting, which can be done via an adjusting means 17 (e.g. worm gear).
  • the worm gear 17 can be fixed without play in a set position.
  • An edge strip 18 of the saddle 6 has an angle ⁇ between the bearing surface 12 and an underside 19 which, for. B. is approximately 80 °. This means that the rear edge of the pressure plate 2 is bent by 100 ° in the embodiment. Of course, other angles ⁇ are also possible here.
  • side plates 21, 22 are arranged pivotably on both sides.
  • the side plates 21, 22 are connected to one another by means of a shaft 23 and an axis 24 and are each pivotably mounted about a shaft journal 26, 27 of the saddle 4.
  • the shaft 23 is rotatably supported in the side plates 21, 22. It has a handle 28 fastened to it in the center and a number (for example 2) of the eccentrically mounted clamping disks 29, 31 connected to the shaft 23 in a rotationally fixed manner.
  • a surface of the clamping disks 29, 31 acts on an upper side 32 of a U-shaped bracket 33, which is pivotably mounted on the axis 24 by means of a first end 34.
  • a second end 36 extends over the entire width of the saddle 4 and has an inwardly curved pressing surface 37 which is adapted to the curvature of the saddle 4.
  • the U-shaped bracket 33 frames a pressure roller 38, which is rotatably mounted in two levers 39, 41, which in turn are pivotably mounted on the axis 24 within the ends 34.
  • a compression spring 42 is attached at one end to the levers 39, 41 and at the other end to the side plate 21, 22.
  • the compression springs 42 increase a contact pressure of the pressure roller 38 on the machine table 3 or on the pressure plate 2 resting thereon.
  • a folding bar 43 is mounted so that it can move vertically in a frame 44.
  • the frame 44 is pivotally mounted by means of two bolts 46, 47 provided in the side plates 21, 22.
  • the folding bar 43 can be brought into contact with the edge bar 13 and a tab bar 48 adjoining it.
  • the tab bar 48 has a number (for example 4) of retractable tab pins 49 distributed over its length and is about an axis 50 which is in two Side supports 51, 52 of the saddle 4 is rotatably mounted, pivotally mounted.
  • a lock is provided on the machine table 3 and on the side plates 21, 22 in order to fix the side plates 21, 22 in a "working position II" on the machine table 3.
  • the means can be, for example, spring-loaded bolts 53, 54 which are in a bore in the side plate 21; 22 are stored and engage in corresponding counterbores 56, 57 in the machine table 3 in the latching position.
  • the saddle 6 for folding a pressure plate end has two shaft journals 58, 59, by means of which it is pivotably mounted in two bearing blocks 61, 62.
  • the bearing blocks 61, 62 are attached to the machine table 3.
  • the shaft journals 58, 59 each carry a lever 63; 64, which is a fork-shaped bearing 66; 67 for a hold-down device 68.
  • An underside 69 of the hold-down device 68 is adapted to the curvature of the bearing surface 12 of the saddle 6.
  • the shaft journals 58, 59 each carry two side plates 71, 72 which are pivotably mounted outside the fastening point for the levers 63, 64 and are connected to one another by means of a cross member 73.
  • a gearwheel or toothed segment e.g. worm gear
  • a gearwheel or toothed segment e.g. worm gear
  • a drive e.g. spindle
  • a frame 79 is pivotally mounted within the side plates 71, 72 by means of two bolts 77, 78.
  • a second folding beam 81 for the pressure plate end is vertically displaceable.
  • a device for lowering the folding beams 43, 81 is in each case by means of two eccentrically mounted adjusting cams 89, 91; 82, 83 indicated schematically.
  • the side plates 71, 72 each have a device for locking the side plates 71, 72 in the "working position II" at two lower ends 87, 88.
  • the locking device consists, for. B. each from a spring-loaded bolt 92, 93 which in a counterbore 94; 96 engages in lever 63, 64 in "working position II".
  • the side plates 21, 22 and 71, 72 are pivoted sideways into a "lay-on position I" (FIG. 2). Then the printing plate 2 is hung by means of pre-punched holes at the beginning of the printing plate via the register pins 49 of the register bar 48.
  • the side plates 21, 22 are pivoted clockwise into the working position "II” until the spring-loaded bolts 53, 54 snap into the counterbores 56, 57.
  • the pressure roller 38 provided with a rubber jacket rolls over the register pins 49, these pressing slightly into the rubber jacket.
  • grooves can also be provided in the area of the register pins 49 without the function of the pressure roller 38 being impaired.
  • the pressure plate Since the radius of curvature of the saddles 4, 6 is smaller (approx. 10%) than that of the plate cylinder provided, the pressure plate receives a permanent deformation which almost corresponds to the radius of the plate cylinder for which the pressure plate is intended.
  • the bracket 33 is pressed down onto the beginning of the pressure plate by means of the clamping disks 29, 31, the pressing surface 37 acting on the saddle 4 behind the register strip 48.
  • the suction device When the suction device is activated, the pressure plate is sucked onto the machine table 3 almost up to a transition line (end 9) between the machine table 3 and the saddle 6.
  • the hold-down device 68 is then pivoted down clockwise onto the end of the pressure plate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)

Claims (9)

  1. Dispositif de pliage pour plier les extrémités de clichés souples (2), avec une table de machine (3) présentant une face de pose (7; 11; 12), présentant à chacune de ses extrémités (8; 9) une bande de pliage (13; 18), autour de laquelle un outil de pliage (44; 43; 79; 81) est disposé de façon à pouvoir pivoter, caractérisé en ce que la face de pose (7) de la table de machine (3) présente une forme concave.
  2. Dispositif de pliage selon la revendication 1, caractérisé en ce que la table de machine (3) présente à chacune de ses extrémités une selle (4; 6).
  3. Dispositif de pliage selon la revendication 1 et 2, caractérisé en ce que les selles (4; 6) présentent une face de pose (11; 12) ayant une forme convexe.
  4. Dispositif de pliage selon les revendications 1 à 3, caractérisé en ce que le rayon de courbure des faces de pose (11; 12) des selles (4; 56) est inférieur au rayon de courbure d'un cylindre porte-plaque, sur lequel doit être fixé le cliché.
  5. Dispositif de pliage selon la revendication 1 à 4, caractérisé en ce que la selle (6) est montée à pivotement.
  6. Dispositif de pliage selon la revendication 1 à 5, caractérisé en ce que le serre-flan (38; 68) est prévu pour presser le cliché (2) sur les selles (4; 6)
  7. Dispositif de pliage selon la revendication 1 à 6, caractérisé en ce qu'est prévu un rouleau de pressage (38).
  8. Dispositif de pliage (1) selon la revendication 1 à 4, caractérisé en ce qu'est prévu un dispositif d'aspiration (98) destiné à aspirer le cliché (2) sur la table de machine (3).
  9. Dispositif de pliage selon la revendication 1 à 4, caractérisé en ce qu'est prévu un dispositif (17) destiné à permettre le réglage de la selle (6).
EP90121862A 1989-11-20 1990-11-15 Dispositif à plier pour plaques d'impression Expired - Lifetime EP0429004B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3938477 1989-11-20
DE3938477A DE3938477A1 (de) 1989-11-20 1989-11-20 Druckplattenabkantvorrichtung

Publications (2)

Publication Number Publication Date
EP0429004A1 EP0429004A1 (fr) 1991-05-29
EP0429004B1 true EP0429004B1 (fr) 1993-07-07

Family

ID=6393857

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90121862A Expired - Lifetime EP0429004B1 (fr) 1989-11-20 1990-11-15 Dispositif à plier pour plaques d'impression

Country Status (5)

Country Link
US (1) US5094095A (fr)
EP (1) EP0429004B1 (fr)
JP (1) JP2503302B2 (fr)
DE (2) DE3938477A1 (fr)
ES (1) ES2043219T3 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6768165B1 (en) * 1997-08-01 2004-07-27 Saifun Semiconductors Ltd. Two bit non-volatile electrically erasable and programmable semiconductor memory cell utilizing asymmetrical charge trapping
KR100391430B1 (ko) * 2000-12-28 2003-07-12 현대자동차주식회사 캠형 프레스 장치
US9937669B2 (en) 2015-04-02 2018-04-10 Xerox Corporation Three-dimensional printed part removal using a bimetallic platen
US10814551B2 (en) 2015-04-02 2020-10-27 Xerox Corporation Three-dimensional printed part removal using an elastomer sheet
US9884449B2 (en) 2015-04-02 2018-02-06 Xerox Corporation Three-dimensional printed part removal using an interlaced platen
US10906244B2 (en) 2015-04-02 2021-02-02 Xerox Corporation Ultrasonic removal methods of three-dimensionally printed parts
US9381701B1 (en) 2015-04-02 2016-07-05 Xerox Corporation Printer and method for releasing three-dimensionally printed parts from a platen using actuators
US9782964B2 (en) 2015-04-02 2017-10-10 Xerox Corporation System and method for removing three-dimensional printed parts from a platen using inductive heating and gravity

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US31938A (en) * 1861-04-02 And garet g
US1710985A (en) * 1927-01-31 1929-04-30 Monighan Mfg Corp Excavating-bucket-forming machine
US2234170A (en) * 1936-09-02 1941-03-11 Hoe & Co R Means for preparing printing plates for application to printing cylinders
US2190423A (en) * 1937-12-06 1940-02-13 Motor Products Corp Windshield frame bending machine
US2932336A (en) * 1955-08-23 1960-04-12 American Can Co Can body hook forming mechanism
US3499308A (en) * 1967-03-22 1970-03-10 Tepfer & Sons Inc S Molding metal
DE1611388B1 (de) * 1968-03-12 1970-03-05 Koenig & Bauer Schnellpressfab Verfahren und Saugschale zum passgerechten Aufkleben von Einzelklischees
DE2013364C3 (de) * 1970-03-20 1979-06-21 Koenig & Bauer Ag, 8700 Wuerzburg Abkantmaschine
US3677057A (en) * 1970-12-04 1972-07-18 Robert A Mackenzie Draw forming
DE2527225C3 (de) * 1975-06-19 1978-10-26 Walter Eckold Vorrichtungs- Und Geraetebau Sperrluttertal, 3424 St Andreasberg Vorrichtung zum maßgenauen Abwinkein der Ränder von gewölbten Tankböden
JPS5645217A (en) * 1979-09-21 1981-04-24 Fuji Photo Film Co Ltd Method and apparatus for double-folding edge of metallic sheet
US4365500A (en) * 1981-01-30 1982-12-28 Chesley F. Carlson Company Web bending fixture
JPS5826116U (ja) * 1981-08-14 1983-02-19 日本電信電話株式会社 同軸ケ−ブル
DE3341924C2 (de) * 1983-11-19 1987-03-26 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Biegevorrichtung für Offsetdruckplatten
JPS62150139U (fr) * 1986-03-14 1987-09-22
JPH066926Y2 (ja) * 1988-04-20 1994-02-23 三菱重工業株式会社 版曲げ加工装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SOVIET INVENTIONS ILLUSTRA- TED, P,Q Sektionen, Woche D 20 v. 24.6.81 DERWENT PUBLICATIONS LTD., London, *SU-761 071 *

Also Published As

Publication number Publication date
EP0429004A1 (fr) 1991-05-29
ES2043219T3 (es) 1993-12-16
DE3938477A1 (de) 1991-05-23
JP2503302B2 (ja) 1996-06-05
DE59001915D1 (de) 1993-08-12
DE3938477C2 (fr) 1991-09-26
JPH03169431A (ja) 1991-07-23
US5094095A (en) 1992-03-10

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