EP0429004A1 - Edging device for printing plates - Google Patents

Edging device for printing plates Download PDF

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Publication number
EP0429004A1
EP0429004A1 EP90121862A EP90121862A EP0429004A1 EP 0429004 A1 EP0429004 A1 EP 0429004A1 EP 90121862 A EP90121862 A EP 90121862A EP 90121862 A EP90121862 A EP 90121862A EP 0429004 A1 EP0429004 A1 EP 0429004A1
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EP
European Patent Office
Prior art keywords
folding
machine table
plate
pressure plate
saddle
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.)
Granted
Application number
EP90121862A
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German (de)
French (fr)
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EP0429004B1 (en
Inventor
Claus Dieter Barrois
Philipp Andreas Dieterich
Anna Barbara Ziegler
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Koenig and Bauer AG
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Koenig and Bauer AG
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Publication date
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Publication of EP0429004A1 publication Critical patent/EP0429004A1/en
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    • 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.
  • the invention has for its object to provide a device for folding a printing plate, in which it is possible to remove the printing plate from the folding device without problems and without moving the 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 as. B. movable edging strips can be avoided.
  • 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.
  • a folding machine 1 for flexible printing plates 2 for printing machines has a machine table 3 and two saddles 4, 6.
  • a support surface 7 of the machine table 3 for the pressure plate 2 has from a left to a right end 8; 9 a curved shape, in particular one domed (convex) shape.
  • the saddles 4, 6 each have a contact surface 11, 12 with an outwardly curved, cylindrical (concave) shape.
  • 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 o . This means that the front edge of the printing plate is folded by about 150 o 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 about 80 o . This means that the rear edge of the pressure plate 2 is folded by 100 o 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 in a rotationally fixed manner; 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 roller 38 rolls over the beginning of the pressure plate 2 to a transition line (end 8) between the saddle 4 and the machine table 3. This pulls the pressure plate firmly against the register pins 49 and the curvature of the Support surface 7 of the saddle 4 adapted preformed.
  • 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.
  • the folding beams 43, 81 are shifted vertically downwards until they rest firmly on the pressure plate 2. Now the register pins 49 are lowered into the register bar 48 and the register bar 48 against Swiveled clockwise. Thereupon, the folding bar 43 together with the frame frame 44 is pivoted counterclockwise around the bolts 46, 47 and the folding beam 81 together with the frame frame 79 is pivoted clockwise about the bolts 77, 78.

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  • 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)

Abstract

In an etching device (1) for the ends of flexible printing plates (2) for rotary printing machines, a supporting surface (7) of a machine table (3) for the printing plate has a concave shape. The supporting surfaces (11, 12) of two saddles (4, 6) each arranged on the machine table have a convex shape. <IMAGE>

Description

Die Erfindung betrifft eine Abkantvorrichtung für die Enden von Druckplatten.The invention relates to a folding device for the ends of printing plates.

Durch die DE-OS 20 13 364 ist eine Abkantvorrichtung bekannt, die für jeweils ein Druckplattenende eine Kantleiste und eine mit der Kantleiste zusammenwirkende Abkantwalze aufweist. Zum Abnehmen der fertig abgekanteten Druckplatte von der Abkantvorrichtung werden die Kantleisten um eine Achse verschwenkt. Eine Bewegung der Kantleisten kann jedoch zu Unparallelitäten zwischen der vorderen und hinteren Kantleiste führen.From DE-OS 20 13 364 an edging device is known which has an edging strip for each printing plate end and a folding roller which interacts with the edging strip. To remove the finished folded printing plate from the folding device, 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.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zum Abkanten einer Druckplatte zu schaffen, bei der es möglich ist, die Druckplatte ohne Probleme und ohne die Kantleisten zu bewegen aus der Abkantvorrichtung zu entnehmen.The invention has for its object to provide a device for folding a printing plate, in which it is possible to remove the printing plate from the folding device without problems and without moving the edge strips.

Die Aufgabe wird erfindungsgemäß durch die Merkmale des kennzeichnenden Teils des Anspruchs 1 gelöst.The object is achieved by the features of the characterizing part of claim 1.

Ein Vorteil der Erfindung liegt insbesondere darin, daß Toleranzfehler in der Parallelität, die zwischen Druckplattenhinter- und -vorderkante auftreten und hervorgerufen werden durch die Lagerung bewegter Teile, wie z. B. bewegbarer Kantleisten, vermieden werden. Außerdem können sehr schmale Zylindergruben (z. B. 5 mm) mit extrem kleinen Spannwegen, wie sie z. B. der Wertpapierdruckmaschinenbau fordert, verwirklicht werden, da die Druckplatten auf beiden Enden um mehr als 90o umgebogen werden können.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 as. 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 o on both ends.

Ein weiterer Vorteil liegt darin, daß die Druckplatte zumindest teilweise, insbesondere an den kritischen Stellen, im Einspannbereich vorgeformt wird. Dies erleichtert den späteren Plattenaufspannvorgang auf dem Plattenzylinder. Außerdem kann die Druckplattenabkantvorrichtung auf verschiedene Formatlängen eingestellt werden.Another advantage is that 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. In addition, the printing plate folding device can be adjusted to different format lengths.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird im folgenden beschrieben: Es zeigen

  • Fig. 1 eine schematische Darstellung der Seitenansicht der erfindungsgemäßen Abkantvorrichtung in "Arbeitsstellung",
  • Fig. 2 wie Fig. 1, in "Auflegestellung",
  • Fig. 3 eine Draufsicht auf die Abkantmaschine für einen Druckplattenanfang,
  • Fig. 4 eine Draufsicht auf die Abkantmaschine für ein Druckplattenende.
An embodiment of the invention is illustrated in the drawings and is described in the following: show
  • 1 is a schematic representation of the side view of the folding device according to the invention in the "working position",
  • 2 like FIG. 1, in the "laying on position",
  • 3 is a plan view of the folding machine for a printing plate start,
  • Fig. 4 is a plan view of the folding machine for a printing plate end.

Eine Abkantmaschine 1 für flexible Druckplatten 2 für Druckmaschinen weist einen Maschinentisch 3 und zwei Sättel 4, 6 auf. Eine Auflagefläche 7 des Maschinentisches 3 für die Druckplatte 2 weist von einem linken bis zu einem rechten Ende 8; 9 eine gewölbte Form, insbesondere eine nach innen gewölbte (konvexe) Form auf. Die Sättel 4, 6 weisen je eine Auflagefläche 11, 12 mit einer nach außen gewölbten, zylindrischen (konkaven) Form auf.A folding machine 1 for flexible printing plates 2 for printing machines has a machine table 3 and two saddles 4, 6. A support surface 7 of the machine table 3 for the pressure plate 2 has from a left to a right end 8; 9 a curved shape, in particular one domed (convex) shape. The saddles 4, 6 each have a contact surface 11, 12 with an outwardly curved, cylindrical (concave) shape.

Der Sattel 4 für eine Druckplattenvorderkante ist fest mit dem Maschinentisch 3 verbunden und weist eine unbewegbare Kantleiste 13 auf. Ein Winkel α, gebildet von der Auflagefläche 11 und einer Unterseite 14 der Kantleiste 13 beträgt z. B. ca. 30o. Dies bedeutet, daß die Vorderkante der Druckplatte im Ausführungsbeispiel um ca. 150o abgekantet wird. Andere Winkel α sind selbstverständlich möglich.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 α, formed by the bearing surface 11 and an underside 14 of the edge strip 13 is z. B. about 30 o . This means that the front edge of the printing plate is folded by about 150 o in the embodiment. Other angles α are of course possible.

Der Sattel 6 für eine Druckplattenhinterkante ist schwenkbar gelagert. Dies dient einer möglichen Formateinstellung, die über ein Verstellmittel 17 (z. B. Schneckengetriebe) erfolgen kann. Das Schneckengetriebe 17 ist in einer eingestellten Position spielfrei festsetzbar.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.

Eine Kantleiste 18 des Sattels 6 weist einen Winkel β zwischen der Auflagefläche 12 und einer Unterseite 19 auf, der z. B. ca. 80o beträgt. Dies bedeutet, daß die Hinterkante der Druckplatte 2 im Ausführungsbeispiel um 100o abgekantet wird. Selbstverständlich sind auch hier andere Winkel β möglich.An edge strip 18 of the saddle 6 has an angle β between the bearing surface 12 and an underside 19 which, for. B. is about 80 o . This means that the rear edge of the pressure plate 2 is folded by 100 o in the embodiment. Of course, other angles β are also possible here.

An den Stirnseiten des Sattels 4 sind auf beiden Seiten Seitenschilder 21, 22 schwenkbar angeordnet. Die seitenschilder 21, 22 sind mittels einer Welle 23 und einer Achse 24 miteinander verbunden und jeweils um einen Wellenzapfen 26, 27 des Sattels 4 schwenkbar gelagert.On the front sides of the saddle 4, 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.

Die Welle 23 ist drehbar in den Seitenschildern 21, 22 gelagert. Sie weist einen an ihr mittig befestigten Handgriff 28 und eine Anzahl (z. B. 2) mit der Welle 23 drehfest verbundene exzentrisch gelagerte Klemmscheiben 29, 31 auf. Eine Oberfläche der Klemmscheiben 29, 31 wirkt auf eine Oberseite 32 eines U-förmigen Bügels 33, der mittels eines ersten Endes 34 schwenkbar auf der Achse 24 gelagert ist. Ein zweites Ende 36 erstreckt sich über die gesamte Breite des Sattels 4 und weist eine an die Krümmung des Sattels 4 angepaßte, nach innen gewölbte Andrückfläche 37 auf. Der U-förmige Bügel 33 umrahmt eine Andrückwalze 38, die in zwei Hebeln 39, 41 drehbar gelagert ist, die ihrerseits auf der Achse 24 innerhalb der Enden 34 schwenkbar gelagert sind.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.

Eine Druckfeder 42 ist jeweils mit einem Ende an den Hebeln 39, 41 und mit dem anderen Ende am Seitenschild 21, 22 angebracht. Die Druckfedern 42 verstärken einen Anpreßdruck der Andrückwalze 38 auf den Maschinentisch 3 bzw. auf die darauf aufliegende Druckplatte 2.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.

Ein Abkantbalken 43 ist in einem Gestellrahmen 44 vertikal bewegbar gelagert. Der Gestellrahmen 44 ist mittels zweier in den Seitenschilden 21, 22 vorgesehenen Bolzen 46, 47 schwenkbar gelagert.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.

Der Abkantbalken 43 ist in Berührung bringbar mit der Kantleiste 13 und eine an diese anschließende Registerleiste 48. Die Registerleiste 48 weist über ihre Länge verteilt eine Anzahl (z. B. 4) versenkbare Registerstifte 49 auf und ist um eine Achse 50, die in zwei Seitenstützen 51, 52 des Sattels 4 drehfest gelagert ist, schwenkbar gelagert.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.

Am Maschinentisch 3 und an den Seitenschildern 21, 22 ist jeweils eine Arretierung vorgesehen, um die Seitenschilder 21, 22 in einer "Arbeitsstellung II" am Maschinentisch 3 festzusetzen. Die Mittel können beispielsweise federbelastete Bolzen 53, 54 sein, die in einer Bohrung im Seitenschild 21; 22 gelagert sind und in Raststellung in entsprechende Senkbohrungen 56, 57 im Maschinentisch 3 einrasten.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.

Der Sattel 6 für das Abkanten eines Druckplattenendes weist zwei Wellenzapfen 58, 59 auf, mittels derer dieser in zwei Lagerböcken 61, 62 schwenkbar gelagert ist. Die Lagerböcke 61, 62 sind am Maschinentisch 3 befestigt. Die Wellenzapfen 58, 59 tragen jeweils drehfest einen Hebel 63; 64, der eine gabelförmige Lagerstelle 66; 67 für einen Niederhalter 68 aufweist. Eine Unterseite 69 des Niederhalters 68 ist der Krümmung der Auflagefläche 12 des Sattels 6 angepaßt. Die Wellenzapfen 58, 59 tragen jeweils außerhalb der Befestigungsstelle für die Hebel 63, 64 schwenkbar gelagert zwei Seitenschilder 71, 72, die mittels einer Traverse 73 miteinander verbunden sind.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 in a rotationally fixed manner; 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.

Darüberhinaus ist auf dem Wellenzapfen 58 ein Zahnrad oder Zahnsegment (z. B. Schneckenrad) 74 aufgeschrumpft, das mit einem Antrieb (z. B. Spindel) 76 in Antriebsverbindung steht und das Schneckengetriebe 17 für die Formatverstellung bildet.In addition, a gearwheel or toothed segment (e.g. worm gear) 74 is shrunk onto the shaft journal 58, which is in drive connection with a drive (e.g. spindle) 76 and forms the worm gear 17 for the format adjustment.

Innerhalb der Seitenschilder 71, 72 ist mittels zweier Bolzen 77, 78 ein Gestellrahmen 79 schwenkbar gelagert. In dem Gestellrahmen 79 ist ein zweiter Abkantbalken 81 für das Druckplattenende vertikal verschiebbar gelagert. Eine Einrichtung zum Absenken der Abkantbalken 43, 81 ist jeweils mittels zweier exzentrisch gelagerter Stellnocken 89, 91; 82, 83 schematisch angedeutet.A frame 79 is pivotally mounted within the side plates 71, 72 by means of two bolts 77, 78. In the frame 79, 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.

An den Innenseiten der Seitenschilder 71, 72 ist jeweils eine Andrückrolle 84; 86 drehbar gelagert.On the inside of the side plates 71, 72 there is a pressure roller 84; 86 rotatably mounted.

Weiterhin weisen die Seitenschilder 71, 72 an zwei unteren Enden 87, 88 jeweils eine Vorrichtung zum Arretieren der Seitenschilder 71, 72 in der "Arbeitsstellung II" auf. Die Arretiervorrichtung besteht z. B. jeweils aus einem federbelasteten Bolzen 92, 93, der in eine Senkbohrung 94; 96 im Hebel 63, 64 in "Arbeitsstellung II" einrastet.Furthermore, 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".

Zum Auflegen der Druckplatte auf die Abkantmaschine 1 werden die Seitenschilder 21, 22 und 71, 72 in eine "Auflegestellung I" seitlich abgeschwenkt (Fig. 2). Daraufhin wird die Druckplatte 2 mittels vorgestanzter Löcher am Druckplattenanfang über die Registerstifte 49 der Registerleiste 48 gehängt. Die Seitenschilder 21, 22 werden im Uhrzeigersinn in Arbeitsstellung "II" verschwenkt, bis die federbelasteten Bolzen 53, 54 in den Senkbohrungen 56, 57 einrasten. Bei dieser Schwenkbewegung überrollt die mit einem Gummimantel versehene Andrückwalze 38 die Registerstifte 49, wobei diese leicht in den Gummimantel eindrücken. Selbstverständlich können im Bereich der Registerstifte 49 auch Nuten vorgesehen werden, ohne daß die Funktion der Andrückwalze 38 beeinträchtigt würde.To place the pressure plate on the folding machine 1, 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. During this pivoting movement, the pressure roller 38 provided with a rubber jacket rolls over the register pins 49, these pressing slightly into the rubber jacket. Of course, grooves can also be provided in the area of the register pins 49 without the function of the pressure roller 38 being impaired.

Die Andrückwalze 38 überrollt den Anfang der Druckplatte 2 bis zu einer Übergangslinie (Ende 8) zwischen Sattel 4 und Maschinentisch 3. Hierdurch wird die Druckplatte fest gegen die Registerstifte 49 gezogen und der Krümmung der Auflagefläche 7 des Sattels 4 angepaßt vorgeformt.The pressure roller 38 rolls over the beginning of the pressure plate 2 to a transition line (end 8) between the saddle 4 and the machine table 3. This pulls the pressure plate firmly against the register pins 49 and the curvature of the Support surface 7 of the saddle 4 adapted preformed.

Da der Krümmungsradius der Sättel 4, 6 kleiner ist (ca. 10 %) als der des vorgesehenen Plattenzylinders, erhält die Druckplatte eine bleibende Verformung, die nahezu dem Radius des Plattenzylinders entspricht, für den die Druckplatte bestimmt ist.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.

Der Bügel 33 wird mittels der Klemmscheiben 29, 31 auf den Druckplattenanfang herabgedrückt, wobei die Andrückfläche 37 hinter der Registerleiste 48 auf den Sattel 4 wirkt.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.

Der Maschinentisch 3 weist über seine Auflagefläche 7 verteilt eine Anzahl (z. B. 12 x 16 = 192) Saugbohrungen 98 auf, die von links nach rechts nacheinander mit Saugluft beaufschlagbar sind. Bei Aktivierung der Saugeinrichtung wird die Druckplatte an den Maschinentisch 3 nahezu bis zu einer Übergangslinie (Ende 9) zwischen Maschinentisch 3 und Sattel 6 angesaugt. Daraufhin wird der Niederhalter 68 im Uhrzeigersinn auf das Ende der Druckplatte herabgeschwenkt.The machine table 3 has a number (eg 12 x 16 = 192) of suction bores 98 distributed over its bearing surface 7, which can be acted upon by suction air from left to right one after the other. 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.

Beim Verschwenken der Seitenschilder 71, 72 aus der "Auflegestellung I" in die "Arbeitsstellung II" geraten die Andrückrollen 84, 86 in Kontakt mit einer Oberseite 99 des Niederhalters 68 und pressen diesen fest auf das Druckplattenende. Die Druckplatte liegt nun fest auf dem Maschinentisch 3 bzw. den Sätteln 4, 6 auf.When the side plates 71, 72 are pivoted from the "laying position I" into the "working position II", the pressure rollers 84, 86 come into contact with an upper side 99 of the hold-down device 68 and press it firmly onto the end of the pressure plate. The pressure plate now lies firmly on the machine table 3 or the saddles 4, 6.

Die Abkantbalken 43, 81 werden vertikal nach unten verschoben, bis sie fest auf der Druckplatte 2 aufliegen. Nun werden die Registerstifte 49 in die Registerleiste 48 herabgesenkt und die Registerleiste 48 entgegen dem Uhrzeigersinn abgeschwenkt. Daraufhin wird der Abkantbalken 43 zusammen mit dem Gestellrahmen 44 um die Bolzen 46, 47 entgegen dem Uhrzeigersinn bzw. der Abkantbalken 81 zusammen mit dem Gestellrahmen 79 um die Bolzen 77, 78 im Uhrzeigersinn verschwenkt.The folding beams 43, 81 are shifted vertically downwards until they rest firmly on the pressure plate 2. Now the register pins 49 are lowered into the register bar 48 and the register bar 48 against Swiveled clockwise. Thereupon, the folding bar 43 together with the frame frame 44 is pivoted counterclockwise around the bolts 46, 47 and the folding beam 81 together with the frame frame 79 is pivoted clockwise about the bolts 77, 78.

Ein Schwenkwinkel α; β beträgt beim Abkantbalken 43α = ca. 150o, beim Abkantbalken 81β = ca. 100o.A swivel angle α; β is 43α = approx. 150 o for the folding beam, 81β = approx. 100 o for the folding beam.

Zum Abnehmen der Druckplatte vom Maschinentisch 3 werden nur noch die Niederhalter 68, 33 von der Druckplatte abgeschwenkt und die Saugluftversorgung der Saugbohrungen 98 abgestellt bzw. derart umgesteuert, daß diese mit Blasluft versorgt werden.To remove the pressure plate from the machine table 3, only the hold-down devices 68, 33 are pivoted away from the pressure plate and the suction air supply to the suction bores 98 is switched off or reversed in such a way that they are supplied with blown air.

Durch elastische Eigenspannung der Druckplatte hat diese das Bestreben, im Bereich des Maschinentisches 3 in eine gestreckte Form zurückzufedern, wodurch die abgekanteten Druckplattenenden nahezu horizontal aus den Kantleisten 13, 18 ausgehängt werden. Die Druckplatte kann nun leicht nach oben vom Maschinentisch 3 abgenommen werden.Due to the elastic inherent tension of the pressure plate, the latter strives to spring back into an elongated shape in the area of the machine table 3, as a result of which the bent pressure plate ends are hung out almost horizontally from the edge strips 13, 18. The pressure plate can now be easily removed from the machine table 3.

TeilelisteParts list

  • 1 Abkantmaschine1 folding machine
  • 2 -2 -
  • 3 Maschinentisch3 machine table
  • 4 Sattel4 saddles
  • 5 -5 -
  • 6 Sattel6 saddle
  • 7 Auflagefläche (3)7 contact surface (3)
  • 8 Ende8 end
  • 9 Ende9 end
  • 10 -10 -
  • 11 Auflagefläche (4)11 contact surface (4)
  • 12 Auflagefläche (6)12 contact surface (6)
  • 13 Kantleiste (4)13 edge strip (4)
  • 14 Unterseite (13)14 bottom (13)
  • 15 -15 -
  • 16 -16 -
  • 17 Schneckengetriebe17 worm gear
  • 18 Kantleiste (6)18 edge strip (6)
  • 19 Unterseite (18)19 bottom (18)
  • 20 -20 -
  • 21 Seitenschild21 side plate
  • 22 Seitenschild22 side plate
  • 23 Welle23 wave
  • 24 Achse24 axis
  • 25 -25 -
  • 26 Wellenzapfen (4)26 shaft journals (4)
  • 27 Wellenzapfen (4)27 shaft journals (4)
  • 28 Handgriff28 handle
  • 29 Klemmscheibe29 clamping disc
  • 30 -30 -
  • 31 Klemmscheibe31 clamping disc
  • 32 Oberseite (33)32 top (33)
  • 33 Bügel33 stirrups
  • 34 Ende (33) erstes34 end (33) first
  • 35 -35 -
  • 36 Ende (33) zweites36 end (33) second
  • 37 Andrückfläche37 pressing surface
  • 38 Andrückfläche38 pressing surface
  • 39 Hebel39 levers
  • 40 -40 -
  • 41 Hebel41 levers
  • 42 Druckfeder42 compression spring
  • 43 Abkantbalken43 folding beams
  • 44 Gestellrahmen44 frame
  • 45 -45 -
  • 46 Bolzen46 bolts
  • 47 Bolzen47 bolts
  • 48 Registerleiste48 tab bar
  • 49 Registerstift49 register pin
  • 50 Achse50 axis
  • 51 Seitenstütze (4)51 side support (4)
  • 52 Seitenstütze (4)52 side support (4)
  • 53 Bolzen53 bolts
  • 54 Bolzen54 bolts
  • 55 -55 -
  • 56 Senkbohrung56 counterbore
  • 57 Senkbohrung57 counterbore
  • 58 Wellenzapfen (6)58 shaft journals (6)
  • 59 Wellenzapfen (6)59 shaft journals (6)
  • 60 -60 -
  • 61 Lagerbock61 bearing block
  • 62 Lagerbock62 bearing block
  • 63 Hebel63 levers
  • 64 Hebel64 levers
  • 65 -65 -
  • 66 Lagerstelle66 depository
  • 67 Lagerstelle67 depository
  • 68 Niederhalter68 hold-down device
  • 69 Unterseite (68)69 bottom (68)
  • 70 -70 -
  • 71 Seitenschild71 side plate
  • 72 Seitenschild72 side plate
  • 73 Traverse73 traverse
  • 74 Schneckenrad (17)74 worm wheel (17)
  • 75 -75 -
  • 76 Spindel (17)76 spindle (17)
  • 77 Bolzen77 bolts
  • 78 Bolzen78 bolts
  • 79 Gestellrahmen79 frame
  • 80 -80 -
  • 81 Abkantbalken81 folding beams
  • 82 Stellnocken (81)82 control cams (81)
  • 83 Stellnocken (81)83 control cams (81)
  • 84 Andrückrolle84 pressure roller
  • 85 -85 -
  • 86 Andrückrolle86 pressure roller
  • 87 Ende (71)87 end (71)
  • 88 Ende (72)88 end (72)
  • 89 Stellnocken (43)89 control cams (43)
  • 90 -90 -
  • 91 Stellnocken (43)91 control cams (43)
  • 92 Bolzen92 bolts
  • 93 Bolzen93 bolts
  • 94 Senkbohrung94 counterbore
  • 95 -95 -
  • 96 Senkbohrung96 counterbore
  • 97 -97 -
  • 98 Saugbohrung98 suction hole
  • 99 Oberseite (68)99 top (68)
  • α Winkelα angle
  • β Winkelβ angle
  • I AuflegestellungI on-hook position
  • II ArbeitsstellungII working position

Claims (10)

1. Abkantvorrichtung (1) zum Umbiegen der Enden von biegsamen Druckplatten, dadurch gekennzeichnet, daß eine Auflagefläche (7) des Maschinentisches (3) eine gewölbte Form aufweist.1. folding device (1) for bending the ends of flexible pressure plates, characterized in that a bearing surface (7) of the machine table (3) has a curved shape. 2. Abkantvorrichtung (1) nach Anspruch 1, dadurch gekennzeichnet, daß die Auflagefläche (7) eine konkave Form aufweist.2. Bending device (1) according to claim 1, characterized in that the bearing surface (7) has a concave shape. 3. Abkantvorrichtung (1) nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß der Maschinentisch (3) an seinen Enden zwei Sättel (4, 6) aufweist.3. Bending device (1) according to claims 1 and 2, characterized in that the machine table (3) has two saddles (4, 6) at its ends. 4. Abkantvorrichtung (1) nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß die Sättel (4, 6) eine Auflagefläche (11; 12) mit einer konvexen Form aufweisen.4. Bending device (1) according to claims 1 to 3, characterized in that the saddles (4, 6) have a bearing surface (11; 12) with a convex shape. 5. Abkantvorrichtung (1) nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, daß ein Krümmungsradius der konvexen Auflageflächen (11, 12) kleiner ist als der Krümmungsradius eines Plattenzylinders, auf dem die Druckplatte befestigt werden soll.5. Bending device (1) according to claims 1 to 4, characterized in that a radius of curvature of the convex bearing surfaces (11, 12) is smaller than the radius of curvature of a plate cylinder on which the printing plate is to be attached. 6. Abkantvorrichtung (1) nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, daß der Sattel (6) verschwenkbar angeordnet ist.6. folding device (1) according to claims 1 to 4, characterized in that the saddle (6) is arranged pivotably. 7. Abkantvorrichtung (1) nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, daß Niederhalter (33, 68) vorgesehen sind.7. folding device (1) according to claims 1 to 4, characterized in that hold-down device (33, 68) are provided. 8. Abkantvorrichtung (1) nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, daß eine Andrückrolle (38) vorgesehen ist.8. folding device (1) according to claims 1 to 4, characterized in that a pressure roller (38) is provided. 9. Abkantvorrichtung (1) nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, daß eine Saugvorrichtung (98) vorgesehen ist.9. folding device (1) according to claims 1 to 4, characterized in that a suction device (98) is provided. 10. Abkantvorrichtung (1) nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, daß eine Verstelleinrichtung (17) vorgesehen ist.10. folding device (1) according to claims 1 to 4, characterized in that an adjusting device (17) is provided.
EP90121862A 1989-11-20 1990-11-15 Edging device for printing plates Expired - Lifetime EP0429004B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3938477 1989-11-20
DE3938477A DE3938477A1 (en) 1989-11-20 1989-11-20 PRINT PLATE BENDING DEVICE

Publications (2)

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

Family

ID=6393857

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90121862A Expired - Lifetime EP0429004B1 (en) 1989-11-20 1990-11-15 Edging device for printing plates

Country Status (5)

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

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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 (en) * 2000-12-28 2003-07-12 현대자동차주식회사 Cam type press system
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
US9937669B2 (en) 2015-04-02 2018-04-10 Xerox Corporation Three-dimensional printed part removal using a bimetallic platen
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
US9381701B1 (en) 2015-04-02 2016-07-05 Xerox Corporation Printer and method for releasing three-dimensionally printed parts from a platen using actuators
US10814551B2 (en) 2015-04-02 2020-10-27 Xerox Corporation Three-dimensional printed part removal using an elastomer sheet

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DE2013364A1 (en) * 1970-03-20 1971-10-07 Koenig & Bauer Schnellpressfab Device for folding the ends of flexible printing plates
US4365500A (en) * 1981-01-30 1982-12-28 Chesley F. Carlson Company Web bending fixture

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US2234170A (en) * 1936-09-02 1941-03-11 Hoe & Co R Means for preparing printing plates for application to printing cylinders
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JPS5645217A (en) * 1979-09-21 1981-04-24 Fuji Photo Film Co Ltd Method and apparatus for double-folding edge of metallic sheet
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US3499308A (en) * 1967-03-22 1970-03-10 Tepfer & Sons Inc S Molding metal
US3566788A (en) * 1968-03-12 1971-03-02 Koenig & Bauer Schnellpressfab Apparatus for positioning individual plates in exact register on rotary letter press printing machines
DE2013364A1 (en) * 1970-03-20 1971-10-07 Koenig & Bauer Schnellpressfab Device for folding the ends of flexible printing plates
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Also Published As

Publication number Publication date
DE59001915D1 (en) 1993-08-12
DE3938477C2 (en) 1991-09-26
JPH03169431A (en) 1991-07-23
US5094095A (en) 1992-03-10
EP0429004B1 (en) 1993-07-07
ES2043219T3 (en) 1993-12-16
JP2503302B2 (en) 1996-06-05
DE3938477A1 (en) 1991-05-23

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