EP0655331A1 - Dispositif pour contrôler le positionnement en registre de plaques sur le cylindre porte-plaque de machines à imprimer - Google Patents

Dispositif pour contrôler le positionnement en registre de plaques sur le cylindre porte-plaque de machines à imprimer Download PDF

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Publication number
EP0655331A1
EP0655331A1 EP94117300A EP94117300A EP0655331A1 EP 0655331 A1 EP0655331 A1 EP 0655331A1 EP 94117300 A EP94117300 A EP 94117300A EP 94117300 A EP94117300 A EP 94117300A EP 0655331 A1 EP0655331 A1 EP 0655331A1
Authority
EP
European Patent Office
Prior art keywords
plate cylinder
stop
printing
stops
coil
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
EP94117300A
Other languages
German (de)
English (en)
Other versions
EP0655331B1 (fr
Inventor
Bernd Lindner
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.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen 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 MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0655331A1 publication Critical patent/EP0655331A1/fr
Application granted granted Critical
Publication of EP0655331B1 publication Critical patent/EP0655331B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1206—Feeding to or removing from the forme cylinder
    • 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
    • B41F27/005—Attaching and registering printing formes to supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
    • B41P2227/30—Detecting the correct position of printing plates on the cylinder

Definitions

  • the invention relates to a device for checking the registration of printing plates on the plate cylinder of printing machines according to the preamble of claim 1.
  • the printing plates for the differently colored partial images are mounted on a plate cylinder.
  • Each printing plate is fastened (clamped) with an edge assigned to the start of printing in a clamping rail and then placed around the outer circumference of the cylinder until the rear edge associated with the printing end can in turn be fastened in a clamping rail.
  • the pressure plate is then tensioned.
  • the disadvantage here is that the dowel pins, which are designed as switches, are electrically connected in series, so that an incorrect system on one side already leads to an interruption of the circuit. It cannot be determined on which side there is an incorrect system.
  • Another disadvantage is that the plate cylinder has contact surfaces that can be contaminated by dampening solution, paint, paper dust, so that a perfect signal transmission is no longer possible.
  • EP 0 555 782 A1 Also known from EP 0 555 782 A1 are locating pins, which are electrically insulated from the potential of the plate cylinder in the area of the clamping rail assigned to the start of pressure.
  • a resonant circuit referred to in this document as a resonator, which is closed electrically by the correct contact of the pressure plate with its U-shaped punched-out holes on the electrically insulated dowel pins.
  • a secondary coil is attached, which can be assigned a primary coil suspended on the frame, so that the alternating magnetic field generated by the primary coil can penetrate the secondary coil at a certain position of the plate cylinder.
  • the primary coil is driven by an electrically powered oscillator and evaluation electronics, so that when the pressure plate is correctly seated on the dowel pins (resonant circuit on the plate cylinder closed), there is a large coupling between the two coils and thus the oscillator via the primary coil high performance is withdrawn.
  • This power loss can be detected by a circuit and serves as an indication of the registration of the pressure plate on the dowel pins.
  • the basic principle of this device is also known from GB-PS 1 321 562.
  • EP 0 551 976 A1 and EP 0 555 782 A1 A disadvantage of the objects of EP 0 551 976 A1 and EP 0 555 782 A1 is that the electrically interrogable dowel pins are electrically connected in series. In order to do this, it is also necessary to lay lines, wires or the like in the plate cylinder. This is not only time-consuming with regard to assembly, it is also prone to failure due to cable breaks or defective soldering.
  • the object of the present invention is therefore to develop a device according to the preamble of claim 1 in such a way that a safe and more accurate determination of a register-correct system at the stops attached in the plate cylinder is possible.
  • FIG. 1 shows a part of the plate cylinder 1 assigned to the pressure start DA with a pit 2 and the clamping rail 3 assigned to the pressure start DA.
  • the clamping rail 3 consists, for example, of an upper clamping rail 3.1 fixedly mounted on the bottom of the pit 2 and a lower clamping rail movably arranged relative thereto 3.2.
  • a pressure plate for fastening to the clamping rail 3 is inserted into the receiving gap 4 between the respective surfaces of the lower clamping rail 3.2 and the upper clamping rail 3.1. Then the lower clamping rail 3.2 is pressed under force against the upper clamping rail 3.1.
  • FIG. 1 shows a top view of the clamping rail 3 or the upper clamping rail 3.1 according to FIG. 1.
  • the edge area of a printing plate 5 associated with the start of printing DA (FIG. 2) is shown.
  • the pressure plate 5 has two punched-outs 5.1 with a U-shaped shape in its front edge, one of which is shown in FIG. 1 and also only one stop 7 cooperating with this punched-out 5.1.
  • a groove-shaped recess 6 is milled into the upper clamping rail 3.1 for each stop 7 provided.
  • the recess 6 is additionally widened in the part of the upper clamping rail 3.1 which projects beyond the lower clamping rail 3.2.
  • the bottom of this groove-shaped recess 6 is lower than the upper surface of the lower clamping rail 3.2 when the lower clamping rail 3.2 is maximally lowered or when the receiving gap 4 is fully open.
  • a stop 7 in the form of a plate or a tongue is inserted into the groove-shaped recess 6 of the upper clamping rail 3.1.
  • the end of the stop 7 facing the front edge of the pressure plate 5 is adapted in accordance with the provided register systems of the punchings 5.1 in the pressure plate 5.
  • the stop 7 is fastened to the upper clamping rail 3.1 via two fastening screws 8 in the respective recess 6. Furthermore, adjusting screws 10 (grub screw) are also provided, by means of which the stop 7 can be adjusted in the circumferential direction of the plate cylinder 1.
  • the lower clamping rail 3.2 Since the underside of the stops 7 rests on the bottom of the recess 6 and, as provided, this lies somewhat lower than the upper side of the lower clamping rail 3.2 in the fully open position, the lower clamping rail 3.2 has a groove 9 in the region of the stops 7, which allows the receiving gap 4 to be closed.
  • a secondary coil 11 in the form of a ring coil is attached in the stop 7, the front end of which is shown in the radial direction out of the plate cylinder 1 (FIG. 1).
  • Fig. 2 it is shown in principle that each stop 7 - it should be mentioned again that the clamping rail 4 of the pressure start DA two axially spaced stops 7 of the type described here are assigned - a primary coil 12 attached to an adjusting device 15th is assigned, which can be brought as close as possible to the secondary coil 11 when the plate cylinder 1 is in a position.
  • the adjusting device 15 is, for example, in each case a lever which is pivotally mounted on the frame side about a horizontal axis and has the primary coil 12 at its pivotable end is appropriate. Provision can also be made for the adjusting device 15, which is arranged at each stop 7, to be pivotably arranged on the protection (not shown here) which is mounted vertically in front of the printing unit cylinders, or can be arranged in some other way.
  • stop means can be provided, by means of which the adjusting device 15 and thus the primary coil 12 can be brought into a defined distance from the secondary coil 11.
  • the stops can be supported either directly on the top of the stops 7 or on the outer surface of the upper clamping rail 3.1.
  • the pivoting of the adjusting device 15 assigned to each stop 7 is carried out by a pneumatic cylinder or the like, not shown.
  • the adjusting device 15 is shown in the so-called query position, i.e. the primary coil 12 is as close as possible to the secondary coil 11. In the printing mode, the adjusting device 15 is turned off by the plate cylinder 1 by pivoting it away.
  • Fig. 2 it is indicated that the ends of the primary coil 12 are connected to an oscillator and evaluation electronics 16, 17.
  • the basic principle of the circuit according to FIG. 3 is known per se and is therefore only briefly explained here.
  • a secondary coil 11 and a series of capacitors 13 are connected in the stop 7.
  • the switch arranged here in this secondary-side resonant circuit corresponds to the electrically insulated attachment of the stops with respect to the plate cylinder 1 and is closed by correctly pressing the pressure plate with its U-shaped cutouts 5.1 against the stops 7.
  • the adjusting device 15 with the primary coil 12 is placed against the secondary coil 11 of a stop 7, the coupling indicated in the circuit according to FIG. 3 results Secondary coil 11 and the primary coil 12.
  • a capacitor 14 is connected in parallel with the primary coil 12, so that the same natural frequency results as the secondary-side resonant circuit consisting of the secondary coil 11 with the capacitor 13. If the primary coil 12 now turns on via the adjusting device 15 the secondary coil 11 is turned on, the oscillator 16 is switched on to feed the primary-side resonant circuit. If the pressure plate 5 with its U-shaped punched-outs 5.1 lies correctly against the stop 7, the switch according to FIG. 3 is closed.
  • evaluation electronics 17 which is known per se, is connected to the oscillator 16, by means of which the drop in performance can be determined and, as indicated, indicated.
  • the stops 7 consist, for example, of ceramic or plastic material, which was cast in a corresponding shape around the secondary coil 11 and the capacitor 13 with the corresponding electrical connecting means.
  • two contact surfaces 19 made of metal are attached to the side of the stop 7 facing the U-shaped punch 5.1.
  • the two contact surfaces 19 are electrically insulated from one another in the middle plane of the stop 7 and are therefore only short-circuited to one another if the U-shaped stamping 5.1 of the pressure plate 5 lies cleanly on this outer contour with the contact surfaces 19.
  • the contact surfaces 19 are connected to one end of the secondary coil 11 and to the one side of the capacitor 13. The corresponding other poles of secondary coil 11 and capacitor 13 are connected directly to one another.
  • FIG. 5 shows a further variant of the design of the stops 7 according to the invention.
  • the stop 7 is shown in section as in FIG. 2.
  • a contact surface 20 is attached, which is directly electrically connected to the one pole of the secondary coil 11.
  • a second contact surface 21 is attached over a large area. This contact surface is connected to one pole of the capacitor 13. Again, the corresponding remaining poles of the secondary coil 11 and capacitor 13 are connected to one another.
  • the switch symbolically represented in FIG. 3 is closed when the pressure plate 5 with its U-shaped punching 5.1 is correctly seated on the end face of the stop 7, ie the contact surface 20.
  • the outer jacket of the plate cylinder 1 By contact with the outer jacket of the plate cylinder 1, it is in electrical contact with it, so that in the electrically conductive connection via the contact surface 21 the secondary-side resonant circuit, consisting of the secondary coil 11 and capacitor 13, is closed.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
EP94117300A 1993-11-24 1994-11-03 Dispositif pour contrÔler le positionnement en registre de plaques sur le cylindre porte-plaque de machines à imprimer Expired - Lifetime EP0655331B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4340052 1993-11-24
DE4340052A DE4340052C2 (de) 1993-11-24 1993-11-24 Vorrichtung zur Kontrolle der registergerechten Anlage einer Druckplatte auf einem Plattenzylinder einer Druckmaschine

Publications (2)

Publication Number Publication Date
EP0655331A1 true EP0655331A1 (fr) 1995-05-31
EP0655331B1 EP0655331B1 (fr) 1997-01-02

Family

ID=6503340

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94117300A Expired - Lifetime EP0655331B1 (fr) 1993-11-24 1994-11-03 Dispositif pour contrÔler le positionnement en registre de plaques sur le cylindre porte-plaque de machines à imprimer

Country Status (3)

Country Link
EP (1) EP0655331B1 (fr)
AT (1) ATE147012T1 (fr)
DE (2) DE4340052C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0982129A1 (fr) * 1998-08-28 2000-03-01 MAN Roland Druckmaschinen AG Dispositif de commande de registre
EP1357071A3 (fr) * 2002-03-27 2005-04-13 Fuji Photo Film Co., Ltd. Dispositif pour le positionnement de matériaux en feuille

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19607297C2 (de) * 1996-02-27 1999-09-02 Koenig & Bauer Ag Kontrolleinrichtung für Druckplatten
DE19754003C2 (de) * 1997-12-05 2002-09-19 Koenig & Bauer Ag Vorrichtung zur Kontrolle der registergerechten Lage einer Druckplatte
DE19803727A1 (de) * 1998-01-30 1999-08-05 Heidelberger Druckmasch Ag Verfahren und Vorrichtung zum automatischen Zuführen und/oder Entfernen von Druckplatten zum/vom Plattenzylinder einer Druckmaschine
DE102005061912A1 (de) * 2005-12-23 2007-07-05 Koenig & Bauer Aktiengesellschaft Vorrichtung und Verfahren zur Detektion der Lage einer Druckplatte in einer Druckmaschine
DE102007039824B4 (de) * 2007-08-23 2009-05-20 Manroland Ag Registerstegeinrichtung für eine Bogendruckmaschine
DE102010028686A1 (de) 2010-05-06 2011-11-10 Manroland Ag Formzylinder einer Druckmaschine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0551976A1 (fr) * 1992-01-17 1993-07-21 Komori Corporation Dispositif pour monter une plaque sur un cylindre porte-plaque
EP0555782A1 (fr) * 1992-02-10 1993-08-18 Komori Corporation Dispositif pour confirmer la condition d'insertion d'une plaque d'impression

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3940796A1 (de) * 1989-12-09 1991-06-13 Koenig & Bauer Ag Verfahren und einrichtung zum automatischen wechseln einer druckplatte
DE9215069U1 (de) * 1992-11-05 1992-12-17 MAN Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung für das registergerechte Anlegen von Druckplatten auf dem Plattenzylinder von Druckmaschinen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0551976A1 (fr) * 1992-01-17 1993-07-21 Komori Corporation Dispositif pour monter une plaque sur un cylindre porte-plaque
EP0555782A1 (fr) * 1992-02-10 1993-08-18 Komori Corporation Dispositif pour confirmer la condition d'insertion d'une plaque d'impression

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0982129A1 (fr) * 1998-08-28 2000-03-01 MAN Roland Druckmaschinen AG Dispositif de commande de registre
EP1357071A3 (fr) * 2002-03-27 2005-04-13 Fuji Photo Film Co., Ltd. Dispositif pour le positionnement de matériaux en feuille

Also Published As

Publication number Publication date
ATE147012T1 (de) 1997-01-15
EP0655331B1 (fr) 1997-01-02
DE4340052A1 (de) 1995-06-08
DE4340052C2 (de) 1996-06-13
DE59401467D1 (de) 1997-02-13

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