EP0861722B1 - Sensor zum Erfassen von Schrägbogen - Google Patents

Sensor zum Erfassen von Schrägbogen Download PDF

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Publication number
EP0861722B1
EP0861722B1 EP98101425A EP98101425A EP0861722B1 EP 0861722 B1 EP0861722 B1 EP 0861722B1 EP 98101425 A EP98101425 A EP 98101425A EP 98101425 A EP98101425 A EP 98101425A EP 0861722 B1 EP0861722 B1 EP 0861722B1
Authority
EP
European Patent Office
Prior art keywords
sheet
receiver
transmitter
sensor
printing
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
EP98101425A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0861722A3 (de
EP0861722A2 (de
Inventor
Willi Becker
Karl-Heinz Helmstädter
Andreas Henn
Tobias Dr. Müller
Jürgen Dr. Rautert
Andreas Schulz
Josef Wehle
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger 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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0861722A2 publication Critical patent/EP0861722A2/de
Publication of EP0861722A3 publication Critical patent/EP0861722A3/de
Application granted granted Critical
Publication of EP0861722B1 publication Critical patent/EP0861722B1/de
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
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/02—Arrangements of indicating devices, e.g. counters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • B65H7/14—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors by photoelectric feelers or detectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/50—Occurence
    • B65H2511/51—Presence
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/60—Optical characteristics, e.g. colour, light
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/40—Sensing or detecting means using optical, e.g. photographic, elements
    • B65H2553/41—Photoelectric detectors
    • B65H2553/412—Photoelectric detectors in barrier arrangements, i.e. emitter facing a receptor element

Definitions

  • the invention relates to a sheet sensor arrangement for a sheet printing machine Turning device that has a gripper system to convey individual sheets.
  • a storage drum for the temporary storage of sheets from a printing unit for Fine print as well as a turning drum included to get one on the storage drum cached sheets in the reverse conveying direction, d. H. with the previous one Trailing edge of the sheet leading to a subsequent printing unit for reverse printing.
  • the storage drum and the turning drum each contain a gripper system for Hold a sheet on its leading or trailing edge.
  • electropneumatic arc sensors for example sniffer pistons or interrogation suction devices, or electro-optical sheet sensors, For example, reflective sensors, which indicate the presence of the front edge or Trailing edge of a sheet at one or more points in the turning device feel. If the sheet is not detected, the pressure is switched off.
  • the sensor For reliable operation, the sensor must be relatively close to the one running past it Bow be arranged. Since the sheet side printed in face-to-face printing on the Storage drum facing outside, there is a risk of smearing fresh Printing ink on the sensor, the larger the more the sheet flutters, the larger it is. By the Lubrication not only damages the fresh printed image, but also the sensor dirty. Optoelectronic sensors in particular therefore require frequent use Cleaning. To prevent smearing, you have sheet guide plates with you Air support used. However, these increase the design effort for the Printing machine without completely eliminating the problem of sensor contamination.
  • Electropneumatic sensors are less susceptible to contamination than electro-optical sensors, but mechanically relatively complex. Since that Response behavior of such sensors on the printing speed and on the type of Depending on the substrate, frequent adjustment work is also required.
  • the known sensors can often only in an unfavorable angular position be assembled, d. H. in a position where an incorrect sheet transfer is relatively late is recognized or there is only a very short time window for the sheet detection, so that the pressure shutdown is also relatively late.
  • EP 0 058 285 A1 describes a control device for Record carriers known in printers. According to this device is located Transmitter and receiver are on the same side, on the opposite side two reflectors.
  • the invention has for its object to provide a sheet sensor arrangement, the is less susceptible to contamination and mechanically simple and with the one Missed sheets can be recognized as early and safely as possible. Furthermore, everyone has to Printing materials (glossy papers, foils, black papers etc.) can be reliably recognized.
  • This type of arrangement of the transmitter and receiver allows a light beam path that proceeding from the arch surface at a preferably acute angle.
  • the time window for detecting the arc can be varied. For example, increasing the angle increases the Time window.
  • the invention Arrangement of transmitter and receiver also advantageously allows this Detection of an arch arriving in a horizontally offset plane.
  • the reflection light barrier or the reflection light sensor consists of transmitter and Receiver housed in the same housing on one side of the press are.
  • the light emitted by the transmitter z. B. infrared or red light is from one on the triple reflector attached to the other side of the printing machine and thrown back to the housing of the receiver housed in the transmitter. If that ; Object breaks through the light beam, d. H. if the sensor receives no light it turns on Arc detected.
  • the transmitter has a polarization filter, that of the emitted Light allows only one direction of polarization.
  • the triple reflector depolarizes at Reflection the light, with a part of the light reflected back to the receiver one passes second polarization filter and can be recognized by the receiver.
  • the Designing a light reflection barrier with a polarization filter enables also reliably detect reflective surfaces.
  • the sheet sensor or the transmitter and receiver are outside the Sheet travel area, the sheet travel area corresponding to that to be printed Format may vary. However, it is necessary that the transmitter and receiver are each are further apart than the sheet format to be printed.
  • the turning device shown in Fig. 1 is part of a sheet-fed printing press with a Printing cylinder 1 for straight printing and a printing cylinder 2 for reverse printing.
  • the between the impression cylinder 1 for straight printing and the impression cylinder 2 for reverse printing arranged turning device comprises a storage drum 3 and one thereon adjacent reversing drum 4.
  • the storage drum 3 has approximately that double the diameter of the impression cylinders 1, 2 and the turning drum 4.
  • the Sheet turning area is preferably between the turning drum 4, the Storage drum 3 and the sheet transport area.
  • FIG. 2 is a schematic perspective view of that in FIG. 1
  • the sheet sensor 12, 13 is one of a Receiver 13 and a transmitter 12 existing sensor from the transmitter 12 Beam of light 15 emits to the receiver 13.
  • Transmitter 12 and receiver 13 are between the turning drum 4 and the storage drum 3 attached. Both the transmitter 12 and the receiver 13 are also outside the transport area in which the Sheet 5 moves so that there is no collision between sheet 5 and either Receiver 13 or the transmitter 12 may arise. This allows the bow to be smear-free to be transported further.
  • the light beam 15, which is between the transmitter 12 and the receiver 13 is, by appropriate arrangement of the receiver 13 and the transmitter 12 aligned that with an existing sheet 5, the grippers 8 of the Turning drum 4 is held, the sheet 5 theoretically penetrates in its plane. Preferably at an acute angle ⁇ 14. This is achieved by the transmitter 12 on the underside of the sheet with regard to the sheet transport path from the storage drum 3 is directed to the turning drum 4 and the receiver 13 above this level is arranged. A reverse arrangement of transmitter 12 and receiver 13 is also possible.
  • Light beam 15 can both by moving the transmitter 12 or receiver 13 adjust horizontally as well as vertically. If the light beam hits an arc, it is recognized as a good arc (none Reception). If no sheet is recognized at the predetermined time, this is considered to be Missed sheet and the press performs the print shutdown.
  • the sheet sensor 12, 13 is slidably arranged in the sheet turning area. By Moving the sheet sensor 12, 13 closer to the turning drum 4 or closer to Storage drum 3, the time when the sheet detection should take place can be set. Detection of sheets at an earlier time increases the remaining reaction time for pressure shutdown.
  • the sensor is preferably attached as close as possible in the direction of the storage drum, however, in such a way that a missing sheet does not give a "good signal”.
  • a turning device with double large storage drum 3 shown as an embodiment.
  • the invention is not limited to this embodiment. Rather, the invention is of any kind can be used by bow turns.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
EP98101425A 1997-02-26 1998-01-28 Sensor zum Erfassen von Schrägbogen Expired - Lifetime EP0861722B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19707658 1997-02-26
DE19707658A DE19707658A1 (de) 1997-02-26 1997-02-26 Schrägsensor

Publications (3)

Publication Number Publication Date
EP0861722A2 EP0861722A2 (de) 1998-09-02
EP0861722A3 EP0861722A3 (de) 1999-05-06
EP0861722B1 true EP0861722B1 (de) 2001-12-19

Family

ID=7821520

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98101425A Expired - Lifetime EP0861722B1 (de) 1997-02-26 1998-01-28 Sensor zum Erfassen von Schrägbogen

Country Status (3)

Country Link
EP (1) EP0861722B1 (ja)
JP (1) JP4160647B2 (ja)
DE (2) DE19707658A1 (ja)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001034397A1 (en) * 1999-11-07 2001-05-17 Indigo N.V. Tandem printing system with fine paper-position correction
US6912952B1 (en) 1998-05-24 2005-07-05 Hewlett-Packard Indigo B.V. Duplex printing system
JP2003534215A (ja) 2000-04-18 2003-11-18 ヒューレット−パッカード・インデイゴ・ビー・ブイ シートの搬送における位置及び詰まりのモニター
DE10254880B4 (de) * 2001-12-14 2009-06-10 Heidelberger Druckmaschinen Ag Verfahren zum Erkennen von Kanten von blattförmigen Materialien
DE10225732B4 (de) * 2002-06-11 2014-08-28 manroland sheetfed GmbH Bogenlaufkontrolle
DE102005049927A1 (de) * 2005-10-18 2007-04-19 Koenig & Bauer Ag Sensoreinrichtung und Verfahren zum Betrieb der Sensoreinrichtung
DE102006003909B4 (de) * 2006-01-27 2017-06-08 manroland sheetfed GmbH Fehlbogensensor einer Druckbogen verarbeitenden Maschine, insbesondere einer Bogendruckmaschine
DE102006019761B4 (de) * 2006-04-28 2024-09-19 Koenig & Bauer Ag Bogenkontrolleinrichtung und Verfahren zur Bogendetektion
JP5643610B2 (ja) * 2010-03-09 2014-12-17 株式会社セイコーアイ・インフォテック 記録装置
DE102010028595B4 (de) * 2010-05-05 2021-06-10 manroland sheetfed GmbH Bogenverarbeitungsmaschine mit kammförmiger Bogenleiteinrichtung
CN103057278A (zh) * 2013-01-18 2013-04-24 无锡佳泰科技有限公司 能够进行漏印检测的标签打字机

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5851827B2 (ja) * 1980-12-05 1983-11-18 小森印刷機械株式会社 印刷紙の側端部検出装置
DE3106144A1 (de) * 1981-02-13 1982-08-26 Mannesmann AG, 4000 Düsseldorf Kontrollvorrichtung fuer den aufzeichnungstraeger in druckern
ES8402225A1 (es) * 1982-05-29 1984-01-16 Heidelberger Druckmasch Ag Dispositivo para la vigilancia del transporte de pliegos en el introductor de maquinas impresoras.
DD212024A1 (de) * 1982-12-14 1984-08-01 Winfried Buesse Einrichtung zur kontrolle der bogenuebergabe in rotationsdruckmaschinen

Also Published As

Publication number Publication date
JP4160647B2 (ja) 2008-10-01
EP0861722A3 (de) 1999-05-06
DE19707658A1 (de) 1998-09-03
JPH10235842A (ja) 1998-09-08
EP0861722A2 (de) 1998-09-02
DE59802485D1 (de) 2002-01-31

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