EP0619185B1 - Device for manufacturing a sleeve, particularly a sleeve-shaped printing plate with a gapless peripheral surface - Google Patents

Device for manufacturing a sleeve, particularly a sleeve-shaped printing plate with a gapless peripheral surface Download PDF

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Publication number
EP0619185B1
EP0619185B1 EP94105131A EP94105131A EP0619185B1 EP 0619185 B1 EP0619185 B1 EP 0619185B1 EP 94105131 A EP94105131 A EP 94105131A EP 94105131 A EP94105131 A EP 94105131A EP 0619185 B1 EP0619185 B1 EP 0619185B1
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EP
European Patent Office
Prior art keywords
plate
cylinder
bars
retaining
bar
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
EP94105131A
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German (de)
French (fr)
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EP0619185A1 (en
Inventor
Eduard Dr. Hoffmann
Johann Winterholler
Wolfgang Prem
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Manroland AG
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MAN Roland Druckmaschinen AG
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Publication of EP0619185A1 publication Critical patent/EP0619185A1/en
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    • 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
    • B41F27/10—Devices for attaching printing elements or formes to supports for attaching non-deformable curved printing formes to forme cylinders
    • B41F27/105—Devices for attaching printing elements or formes to supports for attaching non-deformable curved printing formes to forme cylinders for attaching cylindrical printing formes

Definitions

  • the invention relates to a device for producing a sleeve, in particular a sleeve-shaped printing form, with a coherent circumferential surface from a plate with a fitting hole system.
  • the older German patent application P 41 40 768 discloses a sleeve-shaped offset printing form which has a coherent, channel-free circumferential surface, so that it can be pushed onto the forme cylinder and can be positioned there in the working position in a friction-locked manner and in register.
  • the sleeve was made from a commercially available, cut pressure plate made of a metallic material, the plate edges being connected to one another from the start and end of the print, e.g. were welded that, apart from a connecting seam, the sleeve has an uninterrupted peripheral surface.
  • the pressure plate is provided with a fitting hole system, so that it can be clamped into a welding device in the correct position and welded along the longitudinal seam.
  • Each holder 1, 2, 3 has one or more lifting elements 4, which are distributed along each holder 1, 2, 3 and are designed as electrical holding magnets.
  • brackets 1, 2, 3, which can be carried out in accordance with the plate size used, can be carried out in a known manner, which is therefore not shown, by mounting the brackets 1, 2, 3 on rails and fixing them at desired locations are.
  • Two of the brackets 1, 2 are spaced apart according to the length of the plate and each hold a retaining bar 5, 6 in the starting position by the lifting elements 4 designed as holding magnets interacting with soft iron cores 7 arranged on the bars 5, 6.
  • a sliding table 8 is provided, on which the plate 9 to be formed (dashed) can be inserted.
  • both strips 5, 6 can be lowered onto the plate 9 and the plate edges to be connected by means of a pin register 10 of the strips 5, 6 and the fitting hole system of the plate 9 on the strips in register 5, 6 fixable.
  • the arrangement of the pins 10 on the strips 5, 6 is designed so that the pressure plate 9 provided with a correspondingly punched perforation can be fixed in register. All holes are located within the plate edges so that after the plate 9 has been bent, the holes lie outside the printing surface.
  • One bar 5 has the sliding table 8 as an abutment, while the other bar 6 engages the plate edge protruding beyond the sliding table 8. Below this edge, a rotatably mounted cylinder is provided as a counter bearing for this plate edge.
  • the lowerable bar 6 together with the plate edge fixed to it can be positioned on the cylinder 11 by means of holding magnets 12. These holding magnets 12 are either attached to the bar 6 (in the present example on both sides of the bar 6) and interact with correspondingly placed soft iron cores 13 on the cylinder 11, or vice versa.
  • the transversely displaceable bar 5 is designed as a slide and can be pulled along the table 8 and again by means of at least one endless transport chain 14, which is guided over cam rollers 15 and is supported by chain guides, not shown, in a sliding guide, not shown can be brought into their starting position.
  • displaceable bar 5 is resiliently mounted on both sides in U-shaped rails and this suspension limits the stroke of the bar 5 in the direction of movement of the lifting elements 4 of the holder 1, 3.
  • the transport chain 14 can also be guided in these rails in the way via the sliding table 8.
  • the endless transport chain 14 and also the transversely displaceable bar 5 can be guided over the cylinder 11 while maintaining a distance therefrom by at least the length of the pins 10, so that the cylinder 11 can be passed over without contact.
  • an extendable and retractable backdrop 16 is provided.
  • This can be a plurality of individual extendable segments or inflatable regions distributed along the cylinder 11 on the circumference of the cylinder 11.
  • the cylinder 11 can be provided within certain limits with a circumference that is somewhat larger than the plate length to be processed.
  • the retaining strips 5, 6 are lowered from the starting position onto the plate edges and the plate edges are fixed to the strips 5, 6 by means of the fitting hole system and pin register 10, the strip 6 by the electrical elements attached on both sides Holding magnets 12 non-positively connected to the cylinder 11, both strips 5, 6 detached from the holders 1, 2, the cylinder 11 is rotated through 360 °, so that the Sleeve shape 17 is generated while the strip 5 is pulled together with the plate edge fixed to it over the sliding table 8 and over the cylinder 11. If the rotation of the cylinder 11 is carried out, the bar 5, together with the plate edge fixed to it, is located below the third bracket 3 and can also be positioned on the cylinder 11 by means of the lifting elements 4 of this bracket 3, analogously to the other bar 6.
  • the cylinder 11 advantageously has a flattened shoulder 18 at these positioning points.
  • the positioning of the plate edges on the forme cylinder 11 can advantageously be supported in that the cylinder has register slots, into which the register pins 10 of the strips 5, 6 can engage through the plate edges.
  • the link 16 is now retracted or relieved of pressure and thus the circumference of the cylinder 11 is reduced, the one strip 5 can be moved against the other 6 until the plate edges come into contact and the plate edges can now be connected, or the welding process can take place.
  • FIGS. 3 and 4 A second exemplary embodiment is shown in FIGS. 3 and 4.
  • Two brackets 20, 21 are positioned in the same way as in the first exemplary embodiment in accordance with the plate size to be processed, and likewise the plate edges of the pressure plate 22 to be connected (dashed) by means of, as described in the first exemplary embodiment, the Pin register 23 and the fitting hole system on the two on the brackets 20, 21 by means of lifting elements 24 in the form of holding magnets and correspondingly attached soft iron cores 25 retaining strips 26, 27 can be fixed.
  • a rotatably mounted cylinder 28 Arranged underneath the one holder 21 is a rotatably mounted cylinder 28, which can also be moved transversely parallel to the plane in which the holders 20, 21 are arranged.
  • the cylinder 28 is mounted in a rail 29 and drive pinions 30, which act on the bearing axis 31 of the cylinder 28, roll on racks 32, so that a transverse and simultaneous circumferential movement is possible.
  • the cylinder 28 has a slightly smaller circumference than the shortest length of the plates 22 to be processed.
  • One of the strips 27 together with the plate edge fixed to it can be positioned on the cylinder 28 arranged below by means of the lifting elements 24 of its holder 21. Again, electric holding magnets 33 and soft iron cores 34 cooperating with them fix the strip 27 on the cylinder 28, while the holder 21 releases the strip 27, but the other strip 26, together with the plate edge attached to it, remains on its holder 20.
  • the cylinder 28 is now moved by means of a drive, the drive pinion 30 and racks 32 in the direction of the fixed bar 26. He makes a rotation through 360 °, drives under the plate 22 so that it encases it and the sleeve shape 35 is produced. After a complete rotation of the cylinder 28, the retaining strips 26, 27 face each other until the plate edges to be connected come into contact.
  • the second strip 26 together with the plate edge fixed to it can be positioned on the cylinder 28 by means of the lifting elements 24 of the holder 20 and the connection of the plate edges or the welding process can take place.
  • this cylinder 28 It is advantageous to also equip this cylinder 28 with a flattened shoulder 36 for positioning the plate edges.
  • FIGS. 5 and 6 show a further variant of a device according to the invention.
  • a lever element 45 which is rotatable about an axis 43 and can be moved transversely along a sliding guide 44 Retaining bar 42 is provided.
  • the two strips 41, 42 are spaced apart from one another in accordance with the length of the plate 40 to be processed (FIG. 6).
  • the plate 40 can be fixed in register on the strips 41, 42 by the already described pin register 48 of the strips 41, 42 and the fitting hole system of the plate 40.
  • the lever element 45 is now rotated and at the same time shifted transversely in the direction of the fixed bar 41.
  • the lever element 45 passes underneath the fixed bar 41 and the bar 42 sitting on it faces the fixed 41 after a full rotation, so that the plate edges are in contact and can be connected or welded.
  • Fig. 6 is also intended to indicate the course of movement of the plate edge rotated by 360 °.
  • the drive of the axis 43 of the lever element 45 can take place in an analogous manner by means of a drive, drive pinion and rack as in the cylinder 28 of the second exemplary embodiment.
  • the particular advantage of this variant is that the pressure surface side of the plate 40 hardly needs to be touched in the case of the sleeve shaping, since the strips 41, 42 hold the plate edges from the inside of the sleeve 46 (FIG. 5).
  • the retaining strips are designed as suction strips with integrated vacuum suction cups 47 (FIG. 5) distributed over the entire length and spaced a short distance apart, for holding the plate edges, since aluminum plates pretreated in offset printing are the most frequently used printing form.
  • the retaining strips can be designed as electrical magnetic holding strips for non-positive connection with the plate edges.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zur Erzeugung einer Hülse, insbesondere einer hülsenförmigen Druckform, mit zusammenhängender Umfangsfläche aus einer Platte mit einem Paßloch-System.The invention relates to a device for producing a sleeve, in particular a sleeve-shaped printing form, with a coherent circumferential surface from a plate with a fitting hole system.

Die ältere deutsche Patentanmeldung P 41 40 768 offenbart eine hülsenförmige Offset-Druckform, die über eine zusammenhängende, kanalfreie Umfangsfläche verfügt, so auf den Formzylinder geschoben und dort in der Arbeitsstellung reibschlüssig und registerhaltig positioniert werden kann. Die Hülse wurde aus einer handelsüblichen, zugeschnittenen Druckplatte aus einem metallischen Werkstoff hergestellt, wobei die Plattenkanten von Druckanfang und Druckende derart miteinander verbunden, z.B. verschweißt wurden, daß die Hülse, abgesehen von einer Verbindungsnaht, eine ununterbrochene Umfangsfläche aufweist. Die Druckplatte ist dazu mit einem Paßloch-System versehen, so daß sie positionsgerecht in eine Schweißvorrichtung eingespannt und längsnahtverschweißt werden kann.The older German patent application P 41 40 768 discloses a sleeve-shaped offset printing form which has a coherent, channel-free circumferential surface, so that it can be pushed onto the forme cylinder and can be positioned there in the working position in a friction-locked manner and in register. The sleeve was made from a commercially available, cut pressure plate made of a metallic material, the plate edges being connected to one another from the start and end of the print, e.g. were welded that, apart from a connecting seam, the sleeve has an uninterrupted peripheral surface. For this purpose, the pressure plate is provided with a fitting hole system, so that it can be clamped into a welding device in the correct position and welded along the longitudinal seam.

Das positionsgerechte Einspannen und das Formen der Platte zu einer Hülse wird bisher in mühevoller Handarbeit durchgeführt. Eine Vorrichtung, die lediglich ein Einlegen der zugeschnittenen Platte erfordert und nach der Platteneinlage den Rundungsvorgang und die genaue registerhaltige Positionierung der Plattenenden zum Verbinden ermöglicht, ist nicht bekannt.The correct clamping and shaping of the plate into a sleeve has so far been carried out laboriously by hand. A device which only requires the cut-out plate to be inserted and which, after the plate insert, enables the rounding process and the precise register-correct positioning of the plate ends for connection is not known.

Deshalb ist es die Aufgabe der Erfindung, eine Vorrichtung zur Erzeugung einer Hülsenform aus zugeschnittenen Platten, insbesondere Offsetdruckplatten, und zum genauen registerhaltigen Zusammenfügen der Plattenkanten von Anfang und Ende der Platten zu schaffen.It is therefore the object of the invention to provide a device for producing a sleeve shape from cut plates, in particular offset printing plates, and for joining the plate edges from the start and end of the plates precisely in register.

Diese Aufgabe wird durch die Merkmale im kennzeichnenden Teil des Patentanspruchs 1 gelöst.This object is achieved by the features in the characterizing part of patent claim 1.

Vorteilhafte Ausgestaltungen der Erfindung sind den Unteransprüchen zu entnehmen.Advantageous embodiments of the invention can be found in the subclaims.

Nachfolgend sind mehrere Ausführungsbeispiele der Erfindung anhand der Zeichnungen erklärt. Es zeigt stark schematisiert:

Fig. 1
eine Seitenansicht eines ersten Ausführungsbeispiels einer erfindungsgemäßen Vorrichtung,
Fig. 2
eine Ansicht dieser ersten Ausführung in Richtung II gemäß Fig. 1,
Fig. 3
eine Seitenansicht eines zweiten Ausführungsbeispiels einer erfindungsgemäßen Vorrichtung,
Fig. 4
eine Ansicht dieses zweiten Ausführungsbeispiels in Richtung IV gemäß Fig. 3,
Fig. 5
ein drittes Ausführungsbeispiel, bei dem die Festhalteleisten nach der Formgebung die Hülse von innen heraus fixieren,
Fig. 6
den Bewegungsablauf der zur Ausführung einer Drehung vorgesehenen Festhalteleiste beim dritten Ausführungsbeispiel gemäß der Fig. 5.
Several exemplary embodiments of the invention are explained below with reference to the drawings. It shows a highly schematic:
Fig. 1
2 shows a side view of a first exemplary embodiment of a device according to the invention,
Fig. 2
2 shows a view of this first embodiment in the direction II according to FIG. 1,
Fig. 3
2 shows a side view of a second exemplary embodiment of a device according to the invention,
Fig. 4
3 shows a view of this second exemplary embodiment in the direction IV according to FIG. 3,
Fig. 5
a third embodiment in which the retaining strips fix the sleeve from the inside after shaping,
Fig. 6
the movement sequence of the retaining strip provided for executing a rotation in the third exemplary embodiment according to FIG. 5.

Beim ersten Ausführungsbeispiel gemäß Fig. 1 und 2 sind in einer Ebene drei vorrichtungsbreite, balkenförmige Halterungen 1, 2, 3 angeordnet. Jede Halterung 1, 2, 3 weist ein oder mehrere Hubelemente 4, die längs jeder Halterung 1, 2, 3 verteilt und als elektrische Haftmagnete ausgebildet sind, auf.1 and 2, three device-wide, bar-shaped holders 1, 2, 3 are arranged in one plane. Each holder 1, 2, 3 has one or more lifting elements 4, which are distributed along each holder 1, 2, 3 and are designed as electrical holding magnets.

Die entsprechend der verwendeten Plattengröße durchführbare Positionierung der Halterungen 1, 2, 3 kann in bekannter, deshalb nicht dargestellter Weise durchgeführt werden, indem die Halterungen 1, 2, 3 auf Schienen gelagert und an gewünschten Stellen festsetzbar sind. Zwei der Halterungen 1, 2 sind entsprechend der Plattenlänge voneinander beabstandet und halten in der Ausgangsposition je eine Festhalteleiste 5, 6, indem die als Haftmagnete ausgebildeten Hubelemente 4 mit entsprechend auf den Leisten 5, 6 angeordneten Weicheisenkernen 7 zusammenwirken.The position of the brackets 1, 2, 3, which can be carried out in accordance with the plate size used, can be carried out in a known manner, which is therefore not shown, by mounting the brackets 1, 2, 3 on rails and fixing them at desired locations are. Two of the brackets 1, 2 are spaced apart according to the length of the plate and each hold a retaining bar 5, 6 in the starting position by the lifting elements 4 designed as holding magnets interacting with soft iron cores 7 arranged on the bars 5, 6.

Unterhalb dieser Halterungen 5, 6, jedoch den Bereich unterhalb einer Leiste 6 freilassend, ist ein Gleittisch 8, auf dem die zu formende Platte 9 (gestrichelt) einlegbar ist, vorgesehen.Below these brackets 5, 6, but leaving the area underneath a bar 6, a sliding table 8 is provided, on which the plate 9 to be formed (dashed) can be inserted.

Mittels der Hubelemente 4, die beispielsweise hydraulisch oder pneumatisch betätigbar sind, sind beide Leisten 5, 6 auf die Platte 9 absenkbar und die zu verbindenden Plattenkanten mittels eines Stiftregisters 10 der Leisten 5, 6 und dem Paßloch-System der Platte 9 registergerecht an den Leisten 5, 6 fixierbar. Die Anordnung der Stifte 10 auf den Leisten 5, 6 ist so ausgelegt, daß die mit einer entsprechend gestanzten Lochung versehene Druckplatte 9 registerhaltig fixiert werden kann. Sämtliche Löcher liegen so innerhalb der Plattenkanten, daß nach dem Biegen der Platte 9 die Lochungen außerhalb der Druckfläche liegen.By means of the lifting elements 4, which can be actuated hydraulically or pneumatically, for example, both strips 5, 6 can be lowered onto the plate 9 and the plate edges to be connected by means of a pin register 10 of the strips 5, 6 and the fitting hole system of the plate 9 on the strips in register 5, 6 fixable. The arrangement of the pins 10 on the strips 5, 6 is designed so that the pressure plate 9 provided with a correspondingly punched perforation can be fixed in register. All holes are located within the plate edges so that after the plate 9 has been bent, the holes lie outside the printing surface.

Dabei hat die eine Leiste 5 den Gleittisch 8 als Widerlager, während die andere Leiste 6 an die über den Gleittisch 8 überstehende Plattenkante greift. Unterhalb dieser Kante ist ein drehbar gelagerter Zylinder als Gegenlager für diese Plattenkante vorgesehen. Dazu ist die absenkbare Leiste 6 mitsamt der an ihr fixierten Plattenkante mittels Haftmagneten 12 auf dem Zylinder 11 positionierbar. Diese Haftmagneten 12 sind entweder auf der Leiste 6 angebracht (im vorliegenden Beispiel beidseitig der Leiste 6) und wirken mit entsprechend plazierten Weicheisenkernen 13 auf dem Zylinder 11, oder umgekehrt, zusammen.One bar 5 has the sliding table 8 as an abutment, while the other bar 6 engages the plate edge protruding beyond the sliding table 8. Below this edge, a rotatably mounted cylinder is provided as a counter bearing for this plate edge. For this purpose, the lowerable bar 6 together with the plate edge fixed to it can be positioned on the cylinder 11 by means of holding magnets 12. These holding magnets 12 are either attached to the bar 6 (in the present example on both sides of the bar 6) and interact with correspondingly placed soft iron cores 13 on the cylinder 11, or vice versa.

Nach dem Lösen der Halterungen 1, 2 von den Leisten 5, 6 sitzt nun die eine Leiste 6 nur noch auf dem Zylinder 11, während die andere Leiste 5 entlang des Gleittisches 8 verschiebbar ist.After loosening the brackets 1, 2 from the strips 5, 6, the one strip 6 now only sits on the cylinder 11, while the other strip 5 can be moved along the sliding table 8.

In der dargestellten, besonders vorteilhaften Ausgestaltung ist die transversal verschiebbare Leiste 5 als Schlitten ausgebildet und mittels mindestens einer Endlos-Transportkette 14, die über Kurvenrollen 15 geführt und durch nicht dargestellte Kettenführungen abgestützt ist, in einer nicht dargestellten Gleitführung entlang des Tisches 8 ziehbar und wieder in ihre Ausgangsposition bringbar.In the illustrated, particularly advantageous embodiment, the transversely displaceable bar 5 is designed as a slide and can be pulled along the table 8 and again by means of at least one endless transport chain 14, which is guided over cam rollers 15 and is supported by chain guides, not shown, in a sliding guide, not shown can be brought into their starting position.

Eine zweckmäßige, jedoch nicht dargestellte Ausführung ist darin zu sehen, daß die verschiebbare Leiste 5 beidseitig in U-förmigen Schienen federnd gelagert ist und diese Federung den Hubweg der Leiste 5 in Bewegungsrichtung der Hubelemente 4 der Halterung 1, 3 begrenzt. Auch die Transportkette 14 ist im Weg über den Gleittisch 8 in diesen Schienen führbar.An expedient, but not shown embodiment can be seen in the fact that the displaceable bar 5 is resiliently mounted on both sides in U-shaped rails and this suspension limits the stroke of the bar 5 in the direction of movement of the lifting elements 4 of the holder 1, 3. The transport chain 14 can also be guided in these rails in the way via the sliding table 8.

In besonders zweckmäßiger Weise ist die Endlos-Transportkette 14 und auch die transversal verschiebbare Leiste 5 über den Zylinder 11 unter Einhaltung eines Abstandes von demselben von mindestens der Länge der Stifte 10 führbar, so daß ein berührungsloses Überfahren des Zylinders 11 möglich ist.In a particularly expedient manner, the endless transport chain 14 and also the transversely displaceable bar 5 can be guided over the cylinder 11 while maintaining a distance therefrom by at least the length of the pins 10, so that the cylinder 11 can be passed over without contact.

Zur Verwendung von verschiedenen Plattenformaten ist es von Vorteil den Zylinder 11 mit einem veränderbaren Durchmesser auszubilden. Dazu ist eine aus- und einfahrbare Kulisse 16 vorgesehen. Dies können mehrere einzelne längs des Zylinders 11 verteilte ausfahrbare Segmente bzw. aufblasbare Bereiche auf dem Umfang des Zylinders 11 sein. Somit ist der Zylinder 11 in bestimmten Grenzen jeweils mit einem Umfang versehbar, der etwas größer als die zu verarbeitende Plattenlänge ist.To use different plate formats, it is advantageous to design the cylinder 11 with a variable diameter. For this purpose, an extendable and retractable backdrop 16 is provided. This can be a plurality of individual extendable segments or inflatable regions distributed along the cylinder 11 on the circumference of the cylinder 11. Thus, the cylinder 11 can be provided within certain limits with a circumference that is somewhat larger than the plate length to be processed.

Ist nun die Platte 9 auf dem Gleittisch 8 eingelegt, die Festhalteleisten 5, 6 aus der Ausgangsposition auf die Plattenkanten abgesenkt und mittels des Paßloch-Systems und Stiftregisters 10 die Plattenkanten an den Leisten 5, 6 fixiert, die Leiste 6 durch die beidseitig angebrachten elektrischen Haftmagnete 12 mit dem Zylinder 11 kraftschlüssig verbunden, beide Leisten 5, 6 von den Halterungen 1, 2 gelöst, wird der Zylinder 11 um 360° gedreht, so daß die Hülsenform 17 erzeugt wird, während die Leiste 5 mitsamt der an ihr fixierten Plattenkante über den Gleittisch 8 und über den Zylinder 11 gezogen wird. Ist die Drehung des Zylinders 11 ausgeführt steht die Leiste 5 mitsamt der an ihr fixierten Plattenkante unterhalb der dritten Halterung 3 und kann mittels der Hubelemente 4 dieser Halterung 3 analog zur anderen Leiste 6 ebenfalls auf dem Zylinder 11 positioniert werden.If the plate 9 is now inserted on the sliding table 8, the retaining strips 5, 6 are lowered from the starting position onto the plate edges and the plate edges are fixed to the strips 5, 6 by means of the fitting hole system and pin register 10, the strip 6 by the electrical elements attached on both sides Holding magnets 12 non-positively connected to the cylinder 11, both strips 5, 6 detached from the holders 1, 2, the cylinder 11 is rotated through 360 °, so that the Sleeve shape 17 is generated while the strip 5 is pulled together with the plate edge fixed to it over the sliding table 8 and over the cylinder 11. If the rotation of the cylinder 11 is carried out, the bar 5, together with the plate edge fixed to it, is located below the third bracket 3 and can also be positioned on the cylinder 11 by means of the lifting elements 4 of this bracket 3, analogously to the other bar 6.

Günstigerweise weist der Zylinder 11 an diesen Positionierungsstellen eine abgeflachte Schulter 18 auf.The cylinder 11 advantageously has a flattened shoulder 18 at these positioning points.

Die Positionierung der Plattenkanten auf dem Formzylinder 11 kann in vorteilhafter weise noch dadurch unterstüzt werden, daß der Zylinder Registerlanglöcher aufweist, in die die Registerstifte 10 der Leisten 5, 6 durch die Plattenkanten eingreifen können.The positioning of the plate edges on the forme cylinder 11 can advantageously be supported in that the cylinder has register slots, into which the register pins 10 of the strips 5, 6 can engage through the plate edges.

Wird nun die Kulisse 16 eingefahren bzw. druckentlastet und damit der Umfang des Zylinders 11 verringert, kann die eine Leiste 5 gegen die andere 6 bis zum Kontakt der Plattenkanten verschoben werden und nun die Plattenkanten verbunden werden, bzw. der Schweißvorgang erfolgen.If the link 16 is now retracted or relieved of pressure and thus the circumference of the cylinder 11 is reduced, the one strip 5 can be moved against the other 6 until the plate edges come into contact and the plate edges can now be connected, or the welding process can take place.

Eine weitere vorteilhafte Maßnahme ist darin zu sehen, daß der Zylinder 11 gegenüber seinem Antrieb 19 exzentrisch gelagert ist, um den durch die Kulisse 16 hervorgerufenen Unterschied zwischen seinem Minimal- und Maximaldurchmesser auszugleichen.Another advantageous measure can be seen in the fact that the cylinder 11 is mounted eccentrically with respect to its drive 19 in order to compensate for the difference between its minimum and maximum diameters caused by the link 16.

Ein zweites Ausführungsbeispiel zeigt Fig. 3 und 4. Zwei Halterungen 20, 21 sind in gleicher Weise wie im ersten Ausführungsbeispiel entsprechend der zu verarbeitenden Plattengröße positioniert und ebenso die zu verbindenden Plattenkanten der Druckplatte 22 (gestrichelt) mittels, wie im ersten Ausführungsbeispiel beschrieben, dem Stiftregister 23 und dem Paßloch-System an den beiden an den Halterungen 20, 21 mittels Hubelementen 24 in Form von Haftmagneten und entsprechend angebrachten Weicheisenkernen 25 fixierten Festhalteleisten 26, 27 festmachbar.A second exemplary embodiment is shown in FIGS. 3 and 4. Two brackets 20, 21 are positioned in the same way as in the first exemplary embodiment in accordance with the plate size to be processed, and likewise the plate edges of the pressure plate 22 to be connected (dashed) by means of, as described in the first exemplary embodiment, the Pin register 23 and the fitting hole system on the two on the brackets 20, 21 by means of lifting elements 24 in the form of holding magnets and correspondingly attached soft iron cores 25 retaining strips 26, 27 can be fixed.

Unterhalb der einen Halterung 21 ist wiederum ein drehbar gelagerter Zylinder 28 angeordnet, der zusätzlich parallel zur Ebene, in der die Halterungen 20, 21 angeordnet sind, transversal verfahrbar ist. Dazu ist der Zylinder 28 in einer Schiene 29 gelagert und Antriebsritzel 30, die auf die Lagerachse 31 des Zylinders 28 einwirken, rollen auf Zahnstangen 32 ab, so daß eine Transversal- und gleichzeitige Umfangsbewegung möglich ist.Arranged underneath the one holder 21 is a rotatably mounted cylinder 28, which can also be moved transversely parallel to the plane in which the holders 20, 21 are arranged. For this purpose, the cylinder 28 is mounted in a rail 29 and drive pinions 30, which act on the bearing axis 31 of the cylinder 28, roll on racks 32, so that a transverse and simultaneous circumferential movement is possible.

Der Zylinder 28 weist einen etwas kleineren Umfang als die kürzeste Länge der zu verarbeitenden Platten 22 auf.The cylinder 28 has a slightly smaller circumference than the shortest length of the plates 22 to be processed.

Eine der Leisten 27 ist mitsamt der an ihr fixierten Plattenkante mittels der Hubelemente 24 ihrer Halterung 21 auf dem darunter angeordneten Zylinder 28 positionierbar. Wiederum legen elektrische Haftmagnete 33 und mit ihnen zusammenwirkende Weicheisenkerne 34 die Leiste 27 auf dem Zylinder 28 fest, während die Halterung 21 die Leiste 27 freigibt, die andere Leiste 26 mitsamt der an ihr festgemachten Plattenkante jedoch an ihrer Halterung 20 verbleibt.One of the strips 27 together with the plate edge fixed to it can be positioned on the cylinder 28 arranged below by means of the lifting elements 24 of its holder 21. Again, electric holding magnets 33 and soft iron cores 34 cooperating with them fix the strip 27 on the cylinder 28, while the holder 21 releases the strip 27, but the other strip 26, together with the plate edge attached to it, remains on its holder 20.

Der Zylinder 28 wird nun mittels eines Antriebs, der Antriebsritzel 30 und Zahnstangen 32 in Richtung der feststehenden Leiste 26 verfahren. Dabei führt er eine Drehung um 360° aus, unterfährt dabei die Platte 22, so daß diese ihn ummantelt und die Hülsenform 35 erzeugt wird. Nach einer vollen Umdrehung des Zylinders 28 stehen sich die Festhalteleisten 26, 27 bis zum Kontakt der zu verbindenden Plattenkanten gegenüber.The cylinder 28 is now moved by means of a drive, the drive pinion 30 and racks 32 in the direction of the fixed bar 26. He makes a rotation through 360 °, drives under the plate 22 so that it encases it and the sleeve shape 35 is produced. After a complete rotation of the cylinder 28, the retaining strips 26, 27 face each other until the plate edges to be connected come into contact.

In dieser Position des Zylinders 28 ist die zweite Leiste 26 mitsamt der an ihr fixierten Plattenkante mittels der Hubelemente 24 der Halterung 20 auf dem Zylinder 28 positionierbar und die Verbindung der Plattenkanten, bzw. der Schweißvorgang kann erfolgen.In this position of the cylinder 28, the second strip 26 together with the plate edge fixed to it can be positioned on the cylinder 28 by means of the lifting elements 24 of the holder 20 and the connection of the plate edges or the welding process can take place.

Von Vorteil ist, auch diesen Zylinder 28 zur Positionierung der Plattenkanten mit einer abgeflachten Schulter 36 auszustatten.It is advantageous to also equip this cylinder 28 with a flattened shoulder 36 for positioning the plate edges.

Eine weitere zweckmäßige Maßnahme ist darin zu sehen, den Zylinder 28 gegenüber seinem Antrieb exzentrisch zu lagern, um ein höhenversetztes Unterfahren (Fig. 3) der Platte 22 zu ermöglichen.Another expedient measure is to be seen in the fact that the cylinder 28 is mounted eccentrically with respect to its drive in order to enable the plate 22 to be moved under at a height offset (FIG. 3).

Eine weitere Variante einer erfindungsgemäßen Vorrichtung zeigt die Fig. 5 und 6. Dabei ist für die zu verbindenden Plattenkanten der Platte 40 (gestrichelt) eine feststehend angeordnete 41 und eine auf einem um eine Achse 43 drehbar und entlang einer Gleitführung 44 transversal bewegbaren Hebelelement 45 sitzende Festhalteleiste 42 vorgesehen.FIGS. 5 and 6 show a further variant of a device according to the invention. For the plate edges of the plate 40 to be connected (dashed lines) there is a fixed 41 and a lever element 45 which is rotatable about an axis 43 and can be moved transversely along a sliding guide 44 Retaining bar 42 is provided.

In der Ausgangsposition sind die beiden Leisten 41, 42 entsprechend der Länge der zu verarbeitenden Platte 40 voneinander beabstandet angeordnet (Fig. 6). Die Platte 40 ist durch das bereits beschriebene Stiftregister 48 der Leisten 41, 42 und Paßloch-System der Platte 40 auf den Leisten 41, 42 registergerecht fixierbar.In the starting position, the two strips 41, 42 are spaced apart from one another in accordance with the length of the plate 40 to be processed (FIG. 6). The plate 40 can be fixed in register on the strips 41, 42 by the already described pin register 48 of the strips 41, 42 and the fitting hole system of the plate 40.

Zur Hülsenformung wird nun das Hebelelement 45 gedreht und gleichzeitig transversal in Richtung der feststehenden Leiste 41 verschoben. Dabei unterfährt das Hebelelement 45 die feststehende Leiste 41 und die darauf sitzende Leiste 42 steht nach einer vollen Umdrehung der feststehenden 41 gegenüber, so daß die Plattenkanten in Kontakt stehen und verbunden, bzw. verschweißt werden können.To form the sleeve, the lever element 45 is now rotated and at the same time shifted transversely in the direction of the fixed bar 41. The lever element 45 passes underneath the fixed bar 41 and the bar 42 sitting on it faces the fixed 41 after a full rotation, so that the plate edges are in contact and can be connected or welded.

Fig. 6 soll zusätzlich den Bewegungsablauf der um 360° gedrehten Plattenkante andeuten.Fig. 6 is also intended to indicate the course of movement of the plate edge rotated by 360 °.

Der Antrieb der Achse 43 des Hebelelements 45 kann in analoger Weise mittels Antrieb, Antriebsritzel und Zahnstange wie beim Zylinder 28 des zweiten Ausführungsbeispiels erfolgen.The drive of the axis 43 of the lever element 45 can take place in an analogous manner by means of a drive, drive pinion and rack as in the cylinder 28 of the second exemplary embodiment.

Der besondere Vorteil dieser Variante liegt darin, daß bei der Hülsenformgebung die Druckflächenseite der Platte 40 kaum berührt werden muß, da die Leisten 41, 42 die Plattenkanten aus dem Inneren der Hülse 46 festhalten (Fig. 5).The particular advantage of this variant is that the pressure surface side of the plate 40 hardly needs to be touched in the case of the sleeve shaping, since the strips 41, 42 hold the plate edges from the inside of the sleeve 46 (FIG. 5).

In allen Ausführungsbeispielen sind die Festhalteleisten als Saugleisten mit in geringem Abstand über die gesamte Länge verteilten, integrierten an- und abstellbaren Vakuumsaugern 47 (Fig. 5) zum Festhalten der Plattenkanten ausgebildet, da im Offsetdruck vorbehandelte Aluminiumplatten die am meisten verwendete Druckformart ist.In all the exemplary embodiments, the retaining strips are designed as suction strips with integrated vacuum suction cups 47 (FIG. 5) distributed over the entire length and spaced a short distance apart, for holding the plate edges, since aluminum plates pretreated in offset printing are the most frequently used printing form.

Bei Verwendung von magnetisierbaren Platten, z.B. Platten aus Stahlblech, können die Festhalteleisten als elektrische Haftmagnetleisten zur kraftschlüssigen Verbindung mit den Plattenkanten ausgebildet sein.When using magnetizable plates, e.g. Sheets made of sheet steel, the retaining strips can be designed as electrical magnetic holding strips for non-positive connection with the plate edges.

In diesem Falle ist auch denkbar, anstelle des Stiftregisters und dem Paßloch-System eine optische Abtastung zur Sicherstellung der registerhaften Fixierung der Druckplatte an den Leisten vorzusehen.In this case, it is also conceivable to provide optical scanning instead of the pin register and the fitting hole system to ensure the register-like fixation of the printing plate on the strips.

Es wurden zwar bei den Ausführungsbeispielen die Begriffe Paßloch-System und Stiftregister verwendet, es versteht sich jedoch, daß im Rahmen der Erfindung jegliche Art von Anschlägen, Markierungen oder sonstige Hilfsmittel, mit denen eine registerhafte bzw. lagegerechte Fixierung bzw. Ausrichtung der Plattenkanten an den Leisten gewährleistet ist, zu verstehen ist.Although the terms fitting hole system and pin register were used in the exemplary embodiments, it goes without saying that, within the scope of the invention, any type of stops, markings or other aids with which a register-like or positionally correct fixing or alignment of the plate edges on the Last is guaranteed to be understood.

Ist die Verbindung der Plattenkanten hergestellt, kann die Hülse in den beiden ersten Ausführungsbeispielen nach dem Abheben der Festhalteleisten 5, 6 bzw. 26, 27 mittels der Hubelemente 4 bzw. 24 der Halterungen 2, 3 bzw. 20, 21 nach der offenen Seite von den Zylindern 11 bzw. 28 und im dritten Ausführungsbeispiel nach Abstellen der Haltefunktion der Leisten 41, 42 von diesen entnommen werden.Is the connection of the plate edges made, the sleeve in the first two embodiments after lifting the retaining strips 5, 6 and 26, 27 by means of the lifting elements 4 and 24 of the brackets 2, 3 and 20, 21 to the open side of the cylinders 11 and 28 and in the third embodiment after switching off the holding function of the strips 41, 42 are removed from them.

Claims (15)

  1. Device for the production of a sleeve (17, 35, 46), in particular a sleeve-shaped printing forme, having a continuous peripheral surface formed from a plate (9, 12, 40) with a dowel hole system, characterised in that for both plate edges to be joined there is respectively provided a retaining bar (5, 6; 26, 27; 41, 42) which can be set longitudinally in an initial position and placed onto the respective edge of the plate (9, 22, 40), the retaining bars (5, 6; 26, 27; 41, 42) have a pin register (10, 23, 48) which is designed so that the pins can co-operate with the dowel hole system of the plate (9, 22, 40), in that means (11, 28, 45) are assigned to at least one of the retaining bars (6, 27, 42) for effecting a rotation about an axis parallel to its longitudinal axis, and in that by means of this rotation the retaining bars (5, 6; 26, 27; 41, 42) can be placed opposite each other in such a way that the plate edges to be joined, which are fixed to the bars (5, 6; 26, 27; 41, 42), are in contact and can be joined, thus forming a sleeve (17, 35, 46).
  2. Device according to claim 1, characterised in that the retaining bars (5, 6), spaced apart from each other in the initial position, can be fixed in approximately one plane on holding means (1, 2) which can be positioned according to the size of the plate, below this there is provided a sliding table (8) on which the plate (9) to be formed can be laid, both retaining bars (5, 6) can be lowered onto the plate (9) by means of lifting elements (4) on the holding means (1, 2), and the plate edges to be joined can be fixed true-to-register on the bars (5, 6) by means of the pin register (10) and the dowel hole system with simultaneous release from the holding means (1, 2), one of the retaining bars (5) can be moved transversely along the sliding table (8) at least over the length of the plate, the other retaining bar (6) together with the plate edge fixed on it can be positioned on a rotatably mounted cylinder (11) so that with a complete rotation of the cylinder (11) the plate (9) surrounds it and the retaining bars (5, 6) for joining the plate edges are opposite each other (Fig. 1), and the second bar (5) together with the plate edge fixed on it can be positioned in this position by means of a third holding means (3) on the cylinder (11).
  3. Device according to claim 2, characterised in that the retaining bar (5) to be moved over the sliding table (8) is designed as a carriage, this carriage can be pulled along the table (8) in a sliding guideway by means of an endless transport chain (14), which is guided over cam rollers (15), and can be brought back into its initial position (Fig. 1).
  4. Device according to claim 2, characterised in that in the case of the cylinder (11) a diameter, variable by means of a cam (16), can be set.
  5. Device acording to claim 2 and 3, characterised in that the endless transport chain guideway is guided over the cylinder (11) and maintains a spacing of at least the length of the pins (10) from it.
  6. Device according to claim 2 to 4, characterised in that the retaining bar (5) is resiliently mounted on both sides in sliding rails.
  7. Device according to one of the preceding claims, characterised in that the cylinder (11) is eccentrically mounted with respect to its drive (19).
  8. Device according to claim 1, characterised in that the retaining bars (26, 27), spaced apart from each other in the initial position, can be fixed in an approximately horizontal plane on holding means (20, 21) positionable according to the plate size, the plate edges to be joined can be secured true-to-register on the fixed bars (26, 27) by means of the pin register (23) and the dowel hole system, in that one of the bars (27) together with the plate edge fixed on it can be positioned on a rotatably mounted cylinder (28) by means of lifting elements (25) (sic) on its holding means (21) with simultaneous release from the holding means (21), whilst the other bar (26) remains on its holding means (20) together with the plate edge fixed on it, in that the cylinder (28) can be moved below and parallel to the plane in which the bars (26, 27) are disposed in the initial position, so that with a complete rotation of the cylinder (28) it moves under the plate (22), the plate encloses it, the retaining bars (26, 27) for joining the plate edges are opposite each other (Fig. 3), and in this position of the cylinder (28) the second bar (26) can be positioned on the cylinder (28) together with the plate edge fixed on it.
  9. Device according to claim 8, characterised in that the cylinder (28) has a somewhat smaller circumference than the respective length of the plate (22) to be processed.
  10. Device according to claim 8 and 9, characterised in that the cylinder (28) can be moved by means of drive pinions (30) and toothed rack (32) with simultaneous rotation.
  11. Device according to claim 8 to 10, characterised in that the cylinder (28) is eccentrically mounted with respect to its drive (31).
  12. Device according to one of the preceding claims, characterised in that the cylinders (11, 28) have a flattened shoulder (18, 36) for positioning the plate edges.
  13. Device according to claim 1, characterised in that for the plate edges to be joined there are provided a fixedly arranged retaining bar (41) and a retaining bar (42) located on a lever element (45) arranged rotatably and transversely movably, and the plate edges can be positioned on the bars (41, 42) in such a way that with a complete rotation and simultaneous transverse shifting (Fig. 6) of the lever element (45) in the direction of the fixed bar (41) the bars (41, 42) are opposite each other for joining the plate edges, forming a sleeve (46), the bars (41, 42) retaining the plate edges from the inside of the sleeve (46) (Fig. 5).
  14. Device according to one of the preceding claims, characterised in that the retaining bars (5, 6; 26, 27; 41, 42) are constructed as suction bars with integrated vacuum suction devices (47) distributed with a small spacing over the entire length.
  15. Device according to one of the preceding claims, characterised in that when using magnetisable plates the retaining bars (5, 6; 26, 27; 41, 42) are constructed as magnetic attraction bars for force-fitting connection to the plate edges.
EP94105131A 1993-04-03 1994-03-31 Device for manufacturing a sleeve, particularly a sleeve-shaped printing plate with a gapless peripheral surface Expired - Lifetime EP0619185B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4311078A DE4311078C1 (en) 1993-04-03 1993-04-03 Prodn. of casing-shaped printing forme - uses plate with pass hole system with both plate edges to be joined having retention strips
DE4311078 1993-04-03

Publications (2)

Publication Number Publication Date
EP0619185A1 EP0619185A1 (en) 1994-10-12
EP0619185B1 true EP0619185B1 (en) 1995-11-22

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EP94105131A Expired - Lifetime EP0619185B1 (en) 1993-04-03 1994-03-31 Device for manufacturing a sleeve, particularly a sleeve-shaped printing plate with a gapless peripheral surface

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US (1) US5557960A (en)
EP (1) EP0619185B1 (en)
JP (1) JPH0775744B2 (en)
CA (1) CA2121922C (en)
DE (2) DE4311078C1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4432814A1 (en) 1994-09-15 1996-03-28 Roland Man Druckmasch Carrier sleeve for printing and transfer forms
US5699740A (en) * 1996-06-17 1997-12-23 Creo Products Inc. Method of loading metal printing plates on a vacuum drum
DE19710901C1 (en) * 1997-03-15 1998-08-13 Roland Man Druckmasch Appliance for producing sleeve-type printing form from original sheet
DE10049283A1 (en) * 2000-10-05 2002-04-11 Hueck Folien Gmbh & Co Kg Method and device for producing a cylindrical embossing mold
DE10116609A1 (en) 2001-04-03 2002-11-07 Roland Man Druckmasch Device for producing a sleeve-shaped printing form
DE10260445A1 (en) * 2002-12-21 2004-07-08 Man Roland Druckmaschinen Ag Device for producing a sleeve-shaped printing form
DE102004051041B3 (en) * 2004-10-20 2006-03-02 Windmöller & Hölscher Kg Plate cylinder

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US2958361A (en) * 1957-03-01 1960-11-01 Porter Co Inc H K Apparatus for stretch bending metal strip material
US3773594A (en) * 1972-05-05 1973-11-20 Midland Ross Corp Machinery and process for assembling a printing machine belt
US3937052A (en) * 1975-01-29 1976-02-10 Mosstype Corporation Machine for rolling and curving printing plates
JPS5874357A (en) * 1981-10-30 1983-05-04 Dainippon Printing Co Ltd Manufacture of gravure printing plate
US4674165A (en) * 1983-06-09 1987-06-23 Spaeth Walter Method for manufacturing rounded parts, such as motor vehicle consisting of wheel rims
AT378701B (en) * 1983-10-04 1985-09-25 Haemmerle Ag DEVICE FOR HANDLING TABLETS
GB2179890A (en) * 1985-08-29 1987-03-18 Wilson Engraving Inc Pin register system in production of printing plates
JPS63171227A (en) * 1987-01-09 1988-07-15 Honda Motor Co Ltd Method and device for carrying out handling bar in transfer press machine
US4922742A (en) * 1988-11-03 1990-05-08 Westinghouse Electric Corp. Apparatus for precision forming of sheet metal parts
DE4140768C2 (en) * 1991-12-11 1994-08-18 Roland Man Druckmasch Offset printing form

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Publication number Publication date
DE59400048D1 (en) 1996-01-04
DE4311078C1 (en) 1994-05-26
EP0619185A1 (en) 1994-10-12
JPH0775744B2 (en) 1995-08-16
US5557960A (en) 1996-09-24
JPH0716679A (en) 1995-01-20
CA2121922A1 (en) 1994-10-04
CA2121922C (en) 2000-09-26

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