EP0275039A2 - Dispositif pour transporter une feuille imprimée dans une machine à imprimer, au moyen de systèmes de transfert à chaînes - Google Patents

Dispositif pour transporter une feuille imprimée dans une machine à imprimer, au moyen de systèmes de transfert à chaînes Download PDF

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Publication number
EP0275039A2
EP0275039A2 EP88100154A EP88100154A EP0275039A2 EP 0275039 A2 EP0275039 A2 EP 0275039A2 EP 88100154 A EP88100154 A EP 88100154A EP 88100154 A EP88100154 A EP 88100154A EP 0275039 A2 EP0275039 A2 EP 0275039A2
Authority
EP
European Patent Office
Prior art keywords
gripper
gripper carriage
sheet
spring
transport chains
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.)
Withdrawn
Application number
EP88100154A
Other languages
German (de)
English (en)
Other versions
EP0275039A3 (fr
Inventor
Herbert Rebel
Marco Bergmann
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 EP0275039A2 publication Critical patent/EP0275039A2/fr
Publication of EP0275039A3 publication Critical patent/EP0275039A3/fr
Withdrawn legal-status Critical Current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
    • B41F21/08—Combinations of endless conveyors and grippers

Definitions

  • the invention relates to a device for transporting sheets printed in a printing unit by means of chain transfer systems according to the preamble of the first claim.
  • the gripper supports of the gripper systems protrude beyond the pitch circle diameter of deflection chain wheels, around which the transport chains are guided by a printing press cylinder in the region of the takeover point of the sheets.
  • the gripper supports of the gripper systems run during the sheet transfer on a radius which is approximately equal to the radius of the gripper supports of the grippers of the printing press cylinder. This means that the gripper pads of the gripper systems move faster than the transport chains, each guided by a deflection sprocket, during the sheet transfer. If the transport chains then run off the deflection sprockets and continue in a straight line, the speed of the gripper pads of the gripper systems is reduced to the speed of the transport chain.
  • the rear end of the sheet may not have left the printing press cylinder at this point and is accordingly moved forward faster than the front end of the sheet is pulled off.
  • the bow loses its tension and can form waves that lead to an increased risk of lubrication.
  • the sheet sticks to the rubber cylinder interacting with the impression cylinder until it is torn off. This can lead to permanent deformation of the arch.
  • changes in length of the printing paper can occur during printing due to a wide variety of influences. For example, the flexing process of the Arches in the printing zone and the different expansions caused by different moisture or color. As a result of this stretching of the paper, the gripper tension on the sheet changes constantly. As a result, doubling phenomena can occur especially towards the end of the sheet.
  • the invention has for its object to provide a device of the type mentioned in such a way that the sheet is removed from the impression cylinder after transfer to the gripper systems of the transport chains with approximately the same tension until the sheet end has left the printing line.
  • the sheets are removed from the printing cylinder 1 by means of chain transfer systems and transported to a printing unit or to the delivery.
  • the chain transfer systems comprise gripper carriages 2 carrying grippers, which are arranged between transport chains 12.
  • the gripper carriages 2 have a gripper support spindle 15 and a gripper shaft 16 (FIG. 2) in a known manner. These carry grippers spaced apart from one another, the gripper support 14 of which is rotatably mounted on the gripper support spindle 15 and the gripper fingers 17 of which are rotatably mounted on the gripper shaft 16. In the usual way, the gripper fingers 17 are pivoted in each case by rotating the gripper shaft 16 to detect and release an arc. A gripper control roller 13 running over a curve, not shown, is used for this.
  • the transport chains 12 are each guided around a deflection sprocket 23, the pitch circle diameter of which is smaller than the diameter of the printing press cylinder 1.
  • the side parts of the gripper carriage 2 are connected in an articulated manner in an axis of rotation 18 to a respective carrier plate 3 which is fastened to chain pins 21, 22 of the transport chains 12.
  • the transport chains 12 are also guided in guide rails 5, 6.
  • the gripper carriage 2 is pivotally mounted about the axis of rotation 18 by a predeterminable spring force by means of a spring support 4, 8 to 11.
  • the axis of rotation 18 extends through the center of mass of the gripper carriage 2.
  • each gripper carriage 2 can be locked in the guide rails 5, 6 by means of a roller 7 and can be unlocked again after the sheet has been transferred from the printing press cylinder 1 to the gripper carriage 2.
  • the outer guide rail 6 has a recess 24 in such a way that the tensile stress that can be exerted on the sheet by the gripper carriage 2 is in one way by the spring force of the spring 8 Route AA-BB is adjustable, which is determined by the length of the recess 24 in the outer guide rail 6.
  • the spring 8 is guided on a spring rod 9 which is connected at one end in the joint 11 to an angled support 4 and which is guided in a longitudinally displaceable manner in a fixed stop 10.1 on the gripper carriage 2 at the other end.
  • the spring force of the spring 8 is continuously adjustable between the fixed stop 10.1 and an adjustable stop 10.2. 4, carrier plate 3 and angled support 4 are firmly connected to one another by screws 19, 20.
  • the chain 12 also has a banana-shaped chain link 25 which surrounds the roller 7.
  • the outer guide rail 6 is recessed on the inside, as already mentioned, starting from the handover.
  • This recess 24 can have a curve shape or a circular shape.
  • the gripper carriage 2 is now pivoted about the axis of rotation 18, only at max. Swiveling the roller 7 starts on the outer guide rail 6.
  • the roller 7 has no contact with the outer guide rail 6, so that the tension exerted by the gripper system of the gripper carriage 2 on the sheet over the entire distance AA-BB until far after the end of the sheet from the deflection sprocket 23 by the spring force of the spring 8 is adjustable.
  • the sheet in the area of the recess 24 experiences a resilient advance and is always guided in a stretched manner until the sheet end has left the printing zone.
  • the resilient lead thus acts both in the area of the deflection sprocket and on the subsequent straight path.
EP88100154A 1987-01-16 1988-01-08 Dispositif pour transporter une feuille imprimée dans une machine à imprimer, au moyen de systèmes de transfert à chaínes Withdrawn EP0275039A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873701103 DE3701103A1 (de) 1987-01-16 1987-01-16 Vorrichtung zum transport von in einer druckmaschine bedruckten bogen mittels kettenuebergabesystemen
DE3701103 1987-01-16

Publications (2)

Publication Number Publication Date
EP0275039A2 true EP0275039A2 (fr) 1988-07-20
EP0275039A3 EP0275039A3 (fr) 1990-03-21

Family

ID=6318933

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88100154A Withdrawn EP0275039A3 (fr) 1987-01-16 1988-01-08 Dispositif pour transporter une feuille imprimée dans une machine à imprimer, au moyen de systèmes de transfert à chaínes

Country Status (4)

Country Link
US (1) US4869169A (fr)
EP (1) EP0275039A3 (fr)
JP (1) JPH0653411B2 (fr)
DE (1) DE3701103A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3901599A1 (de) * 1989-01-20 1990-08-02 Heidelberger Druckmasch Ag Greiferanordnung an bogenverarbeitenden maschinen, insbesondere bogenoffsetdruckmaschinen
DE4443057A1 (de) * 1994-12-03 1996-06-05 Heidelberger Druckmasch Ag Bogenauslage an Druckmaschinen
DE29517472U1 (de) * 1995-11-04 1995-12-21 Heidelberger Druckmasch Ag Vorrichtung zum Verstellen von Leitbügeln in Rotationsdruckmaschinen
JP3532167B2 (ja) * 2001-06-01 2004-05-31 株式会社オーディオテクニカ レーザー墨出し器におけるレーザーライン光照射方法および装置
DE10157117A1 (de) * 2001-11-21 2003-05-28 Koenig & Bauer Ag Bogenausleger für eine bogenverarbeitende Maschine
CN106183394A (zh) * 2016-07-07 2016-12-07 天津长荣印刷设备股份有限公司 一种机组式模烫机的精准定位装置及其工作方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE830959C (de) * 1950-03-31 1952-02-07 Faber & Schleicher A G Vorrichtung zum passgerechten Transport von Bogen zwischen zwei Druckwerken
FR1082686A (fr) * 1952-04-15 1954-12-31 Nouvelle machine à séparer et prélever les feuilles à par ? une pile
FR1335971A (fr) * 1962-10-12 1963-08-23 Color Metal A G Perfectionnements apportés aux dispositifs pour le transfert des feuilles dans les presses d'impression à cylindres multiples

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE861567C (de) * 1941-11-28 1953-01-05 Willy Dipl-Ing Mailaender Greifersystem-Lagerung und -Befestigung an einer Bogentransportkette
US2875693A (en) * 1955-06-09 1959-03-03 Jergrell Borje Christian Control mechanism for swing grippers in printing presses
US2984178A (en) * 1956-03-07 1961-05-16 Roland Offsetmaschf Gripper for use in printing machines
US2997157A (en) * 1958-02-10 1961-08-22 Miller Printing Machinery Co Gripper mechanism
US3186709A (en) * 1963-06-18 1965-06-01 Miehle Goss Dexter Inc Delivery mechanism for printing presses
US3378256A (en) * 1966-03-22 1968-04-16 Harris Intertype Corp Sheet delivery slowdown
CH483926A (de) * 1968-02-28 1970-01-15 Roland Offsetmaschf Vorrichtung zur passgerechten Bogenübergabe an Druckwerken
DE2224932C2 (de) * 1972-05-23 1974-03-07 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Vorgreifersteuerung für Bogenrotationsdruckmaschinen
US4524964A (en) * 1979-12-17 1985-06-25 Offset Engineering, Inc. Apparatus for transferring printed material onto a chain delivery
DE3114581C2 (de) * 1981-04-10 1984-01-19 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Fördervorrichtung für eine Bogen-Rotationsdruckmaschine
DE3429008C2 (de) * 1984-08-07 1986-07-10 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zum Transportieren von Bogen hinter einer Auslegetrommel
DE3502663C1 (de) * 1985-01-26 1986-06-05 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Kettenfoerderer fuer den Ausleger von Druckmaschinen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE830959C (de) * 1950-03-31 1952-02-07 Faber & Schleicher A G Vorrichtung zum passgerechten Transport von Bogen zwischen zwei Druckwerken
FR1082686A (fr) * 1952-04-15 1954-12-31 Nouvelle machine à séparer et prélever les feuilles à par ? une pile
FR1335971A (fr) * 1962-10-12 1963-08-23 Color Metal A G Perfectionnements apportés aux dispositifs pour le transfert des feuilles dans les presses d'impression à cylindres multiples

Also Published As

Publication number Publication date
JPS63231938A (ja) 1988-09-28
US4869169A (en) 1989-09-26
JPH0653411B2 (ja) 1994-07-20
DE3701103A1 (de) 1988-07-28
DE3701103C2 (fr) 1990-04-19
EP0275039A3 (fr) 1990-03-21

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