EP0692379B1 - Dispositif pour le contrÔle d'un changement de plaques d'impression automatisé - Google Patents

Dispositif pour le contrÔle d'un changement de plaques d'impression automatisé Download PDF

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Publication number
EP0692379B1
EP0692379B1 EP95108291A EP95108291A EP0692379B1 EP 0692379 B1 EP0692379 B1 EP 0692379B1 EP 95108291 A EP95108291 A EP 95108291A EP 95108291 A EP95108291 A EP 95108291A EP 0692379 B1 EP0692379 B1 EP 0692379B1
Authority
EP
European Patent Office
Prior art keywords
printing plate
counter
pressure roller
sensor
pressure
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
EP95108291A
Other languages
German (de)
English (en)
Other versions
EP0692379A2 (fr
EP0692379A3 (fr
Inventor
Klaus Dr.-Ing. Mank
Reinhard Seiler
Bernd Lindner
Nikola Pupic
Berthold Seib
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 EP0692379A2 publication Critical patent/EP0692379A2/fr
Publication of EP0692379A3 publication Critical patent/EP0692379A3/fr
Application granted granted Critical
Publication of EP0692379B1 publication Critical patent/EP0692379B1/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
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/16—Programming systems for automatic control of sequence of operations
    • 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

Definitions

  • the invention relates to a device for controlling an automated Printing plate change according to the preamble of claim 1.
  • DE 3 940 796 C2 describes a method and a device for automatic change of a printing plate known, in which Pressure plates between a driven transport roller and Back pressure rollers are promoted. To do this, the transport roller and the freely rotating counter pressure roller with a force against each other hired, so that the pressure plate to be transported via friction receives the power necessary to promote it.
  • GB-A-2 158 011 discloses an ink feed mechanism for a printing press known in which a measuring roller is coupled to a rotary encoder. The rotation the measuring roller is compared to the rotation of a driven pressure roller recorded and from the comparison signals formed quantities for the ink supply educated.
  • JP-A-61114946 a device for monitoring the paper feed is shown in a copier known in which by means of an optical light barrier sensor the movement of a detector roller driven by friction is detected.
  • the device serves to shorten the time interval for conveying a sheet and increase the processing speed of the machine.
  • the object of the present invention is therefore a device to develop in such a way according to the preamble of claim 1 that it can be effectively determined with simple means whether a Pressure plate is properly conveyed.
  • the rotation of the freely rotating is sensed Counter pressure roller to determine whether a used printing plate is properly discharged from the plate cylinder.
  • the sensor system according to the invention determine whether a new one to be fed to the plate cylinder Pressure plate is properly conveyed.
  • Fig. 2 shows a known printing plate changer 1 with two freely rotating counter pressure rollers that do not have a drive 2, 3.
  • a transport roller 4 is pivotally mounted.
  • This swivel Storage of the transport roller 4 consists recognizably of swivel levers with one swivel each.
  • the transport roller 4 has one Drive, not shown, by means of the arrow indicated rotation of the transport roller 4 can be generated.
  • Fig. 2 is one of a plate cylinder, not shown to be discharged pressure plate 5 shown by the to the Counter pressure roller 2 employed transport roller 4 in the direction of upward arrow is promoted.
  • the one described here only in principle Device of the printing plate change 1 over the format width of the Printing plates two or more counter pressure and transport rollers 2, 3, 4 and in particular on the top of a before Protection cylinders located protection is arranged.
  • Below the shown device of the printing plate changer 1 are Guide devices, not shown, by means of which a newly to be supplied Pressure plate towards the plate cylinder and a used pressure plate - Here the pressure plate 5 - are removed from the plate cylinder can. Feeding a new printing plate to the plate cylinder is done by placing the transport roller 4 on the counter pressure roller 3rd
  • Fig. 3 shows a section through the storage of the counter pressure roller 2.
  • the counter-pressure roller 2 is in a recess in a carrier 6 arranged and over, for example, needle bearings on one by the Carrier 6 held axle 7 rotatably mounted.
  • a measuring bushing 8 On the left side of the counter pressure roller 2 is a measuring bushing 8 attached, which according to the embodiment shown as a Extension of a cylindrical arranged in the counter pressure roller 2 Body is formed in which the bearings sit. With the measuring socket 8 cooperates with a sensor 9, from which a signal can be taken when the measuring bushing 8 is set in rotation by the counterpressure roller 2 becomes.
  • the sensor 9 is fastened to the carrier 6 via a holder 10, so that its active surface is a defined distance from the outer circumference the measuring socket 8 forms.
  • FIG 1 shows in perspective the inventive design of the Measuring bushing 8. It is shown that the measuring bushing 8, which is coaxial runs to thru-axle 7, each on a quarter of its circumference Has slits.
  • the measuring bush 8 is thus in the manner of a crown ring educated.
  • the sensor 9 as an inductive proximity switch training, from which a signal can always be extracted, if the distance of the sensor 9 to the metallic part of the Measuring socket 8 or the metallic thru axle 7 changes.
  • the switching distance of the sensor designed as an inductive proximity switch For this purpose, 9 is on the outer diameter of the measuring bushing 8 and the Diameter of the thru axle 7 matched.
  • the output signals of the Sensors 9 can be fed to a control, not shown, which the signals of the sensor 9 depending on the control the transport roller and compares the correct printing plate conveyance determined. With the control it is possible issue an error message and an interruption of the printing plate change process to be initiated if in the manner described and found an incorrect printing plate feed has been. There are also other measures to be initiated by the control conceivable.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Preparing Plates And Mask In Photomechanical Process (AREA)
  • Rotary Presses (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Claims (3)

  1. Dispositif pour le contrôle de l'échange automatisé de plaques d'impression, dans lequel une plaque d'impression (5) peut être transportée entre des rouleaux de transport entraínés (4) et des rouleaux de contre-pression (2, 3) librement rotatifs,
    caractérisé en ce qu'il est associé, au rouleau de contre-pression (2) servant à évacuer une plaque d'impression (5) consommée, un capteur (9) détectant la rotation du rouleau de contre-pression (2), dont les signaux de sortie peuvent être amenés à une commande effectuant les processus de l'échange automatisé des plaques d'impression.
  2. Dispositif selon la revendication 1,
    caractérisé en ce que le rouleau de contre-pression (2) présente une douille de mesure (8) ayant des fentes agencées à la périphérie à la manière d'une couronne, et le capteur (9) est réalisé comme un détecteur de proximité inductif.
  3. Dispositif selon la revendication 2,
    caractérisé en ce que la douille de mesure (8) présente deux fentes diamétralement opposées.
EP95108291A 1994-07-12 1995-05-31 Dispositif pour le contrÔle d'un changement de plaques d'impression automatisé Expired - Lifetime EP0692379B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9411254U 1994-07-12
DE9411254U DE9411254U1 (de) 1994-07-12 1994-07-12 Vorrichtung zur Kontrolle eines automatisierten Druckplattenwechsels

Publications (3)

Publication Number Publication Date
EP0692379A2 EP0692379A2 (fr) 1996-01-17
EP0692379A3 EP0692379A3 (fr) 1996-11-13
EP0692379B1 true EP0692379B1 (fr) 1999-08-18

Family

ID=6911029

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95108291A Expired - Lifetime EP0692379B1 (fr) 1994-07-12 1995-05-31 Dispositif pour le contrÔle d'un changement de plaques d'impression automatisé

Country Status (3)

Country Link
EP (1) EP0692379B1 (fr)
AT (1) ATE183446T1 (fr)
DE (2) DE9411254U1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19611530C1 (de) * 1996-03-23 1997-10-16 Roland Man Druckmasch Verfahren und Vorrichtung zur Steuerung eines automatisierten Druckplattenwechselvorganges bei einer Druckmaschine
DE19636703C2 (de) * 1996-09-10 1998-12-03 Roland Man Druckmasch Vorrichtung zur automatischen Steuerung eines Druckplattenwechselvorganges

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2158011B (en) * 1984-05-03 1988-05-25 Duplo Seiko Corp Ink detecting device for rotary printer
JPS61114946A (ja) * 1984-11-09 1986-06-02 Canon Inc シ−ト材検知装置
US4795278B1 (en) * 1986-11-28 1992-11-03 Nippon Seiko Kk Bearing assembly
DE3940796A1 (de) 1989-12-09 1991-06-13 Koenig & Bauer Ag Verfahren und einrichtung zum automatischen wechseln einer druckplatte
DE4404558C2 (de) * 1994-02-12 1996-02-01 Roland Man Druckmasch Vorrichtung zum automatischen Wechseln von Druckplatten

Also Published As

Publication number Publication date
ATE183446T1 (de) 1999-09-15
DE59506634D1 (de) 1999-09-23
DE9411254U1 (de) 1994-10-13
EP0692379A2 (fr) 1996-01-17
EP0692379A3 (fr) 1996-11-13

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