EP1712357B1 - Dispositif de retournement ayant un cylindre de retournement avec un dispositif d'aspiration - Google Patents

Dispositif de retournement ayant un cylindre de retournement avec un dispositif d'aspiration Download PDF

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Publication number
EP1712357B1
EP1712357B1 EP06005767A EP06005767A EP1712357B1 EP 1712357 B1 EP1712357 B1 EP 1712357B1 EP 06005767 A EP06005767 A EP 06005767A EP 06005767 A EP06005767 A EP 06005767A EP 1712357 B1 EP1712357 B1 EP 1712357B1
Authority
EP
European Patent Office
Prior art keywords
sheet
suction
suction head
turning
support surface
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.)
Not-in-force
Application number
EP06005767A
Other languages
German (de)
English (en)
Other versions
EP1712357A2 (fr
EP1712357A3 (fr
Inventor
Hanns-Otto Haas
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
Manroland 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 Manroland AG filed Critical Manroland AG
Publication of EP1712357A2 publication Critical patent/EP1712357A2/fr
Publication of EP1712357A3 publication Critical patent/EP1712357A3/fr
Application granted granted Critical
Publication of EP1712357B1 publication Critical patent/EP1712357B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B41F21/04—Grippers
    • B41F21/06—Suction-operated grippers
    • 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
    • B41F21/10—Combinations of transfer drums and grippers
    • B41F21/106—Combinations of transfer drums and grippers for reversing sheets, e.g. for perfecting machine
    • B41F21/108—Combinations of transfer drums and grippers for reversing sheets, e.g. for perfecting machine with pneumatic means

Definitions

  • the invention is directed to a take-off vacuum cleaner for use in a, a turning drum comprehensive sheet turning device for performing a trailing edge turn.
  • a sucker for a sheet turning device is known. This sucker is used to initiate the tapping of a sheet trailing edge of a sheet-guiding cylinder and transfer the sheet trailing edge region to a gripper system.
  • the nipple is made of a rubber-elastic material and comprises a sheet support section with recessed suction channels therein.
  • Out DE 36 43 915 A1 is also a sucker for a beater of a printing press known.
  • the sucker is designed as a spring aspirator and comprises a suction head which forms a bow contact surface facing the sheet section to be sucked.
  • the sucker is designed such that immediately after covering the sheet contact surface by the arc section (Bogenhinterkantenrand Scheme) of the sucker is retracted.
  • a sucker control for controlling the suction of a sheet transfer drum in which the suckers are forcibly moved via a transmission means for transferring a trailing edge of the sheet trapped by the suction in a gripper region.
  • the problem is that for the tapping of the sheet trailing edge region in dependence on the mechanical properties of the printing material, and the thickness of the substrate different gripping conditions and thus fluctuations in the transfer position of the sheet trailing edge, the grip and give grip accuracy.
  • the invention has for its object to provide a vacuum cleaner for a turning device, which is characterized by advantageous gripping properties and a high compatibility with different substrates, in particular to different thicknesses of printing materials.
  • nipple On the basis of the design of the nipple according to the invention, it is possible to provide a nipple system that automatically adapts to the respective sheet thickness and is thus characterized at different substrate thicknesses by a largely consistently high transfer accuracy.
  • the hinge device is designed as a hinge joint.
  • This hinge joint can be realized in particular as a film or film hinge.
  • the hinge device can furthermore be designed so that the suction head is biased by it in a predetermined direction, in particular a suitable for picking thin substrates suitable orientation.
  • the hinge device is preferably further arranged and designed such that the tilting axis defined by the latter is located close to the downstream end region of the suction head, viewed in the sheet running direction.
  • This arrangement of the tilting axis makes it possible in particular to reliably pick up thicker sections of the arch projecting from the sheet-guiding cylinder as a result of their flexural rigidity in the trailing edge region.
  • the nipple such that the tilting movement of the nipple head is supported towards the stop surface as soon as the sheet section to be taken up rests on the sheet support surface and covers it.
  • This support can be achieved by activating a cylinder or bellows structure as a result of the negative pressure prevailing in the interior of the suction head after covering the sheet support surface by the corresponding arc section.
  • the tilting region of the suction head is preferably in the range of about 3 to 15 °.
  • the end position of the cleaner head in the unfolded state is preferably determined by a stop structure.
  • the suction surface provided by the suction head is hinged on the inventively provided hinge or hinge means tiltable on a suction finger body.
  • This Saugfingerkorpus can form part of Hubsauger worn and be withdrawn by applying negative pressure, in particular after covering the suction surface to a stop out, the stop determines the exact location of the sheet edge to be transferred.
  • the return of the suction finger can be done by a resilient element (steel spring, elastomer structure, ETC). Due to the articulated mounting of the suction head, it is possible to reliably process different thicknesses and different bending resistant substrates. The folding movement of the cleaner head is superimposed on the actual suction movement and simplifies the extent of their control.
  • sucker for a beater comprises a suction head 1, which is preferably made of an elastomeric material and as such serves to provide a sheet support surface 2.
  • a plurality Saugkavernen 3 are formed, which communicate with a running below the sheet support surface 2 suction channel.
  • a pressure below the ambient pressure can be applied for sucking a trailing edge region of a sheet to the sheet support surface 2 in the context of the initiation of a trailing edge.
  • the nipple head 1 is pivotably mounted via a hinge device 4 in such a way that it can be tilted about a tilting axis X which is parallel to the axis of rotation of a turning drum not shown here.
  • the tilting region S is delimited by a stop device 5 cooperating with the suction head 1.
  • the hinge device 4 is designed as a hinge joint.
  • the tilting axis X defined by the articulation device 4 extends close to the downstream end region of the suction head 1, as seen in the sheet running direction BLR.
  • the articulation device 4 is designed as a film or film hinge.
  • the stopper 5 is realized directly by this Saugerfingerbasis 7 in conjunction with an integrated into the suction head 1 or coupled to this structure 1 a.
  • FIG. 2 located in the interior of the Saugerfingerbasis 7 axially shortened or compressible air duct means 8.
  • the air duct means 8 is formed in this embodiment as a bellows hose.
  • This bellows tube is actively shortened as soon as the sheet support surface 2 of the cleaner head 1 is covered by a trailing edge region of the sheet to be gripped and tilts the suction head 1 actively against the stop surface 5.
  • the securely gripped in this state by the suction head 1 and defined by the pivot angle S back-tilted region of the bow can now be moved in a conventional manner by forcibly guiding the Saugerfingerbasis 7 in a gripper system accessible gripper area (see in particular DE 40 12 497 A1 ).
  • FIG. 3 is again a preferred embodiment of the running in the suction head 1 Saugkavernen 3 shown.
  • the holding effect achieved by the suction head 1 is based on the fact that the sheet section resting on the sheet support surface 2 is urged against the sheet support surface 2 by the ambient pressure acting on the rear side of the sheet facing away from the sheet support surface 2.
  • the sheet support surface 2 is preferably made of a material which ensures a sufficient lateral force transmission capacity under the effect of the pressure difference brought about by the pressure difference.

Landscapes

  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Manipulator (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)

Claims (7)

  1. Dispositif de retournement de feuilles pour la réalisation d'une application à bord de fuite, comprenant un tambour de retournement pourvu d'un aspirateur comportant une tête d'aspiration, la tête d'aspiration (1) s'appuyant via un système d'articulation (4) de manière à pouvoir bouger en basculant autour d'un axe de basculement (X) parallèle à l'axe de rotation du tambour de retournement et
    la zone de basculement (S) étant limitée par un dispositif de butée (5) coopérant avec la tête d'aspiration (1),
    caractérisé en ce que
    la tête d'aspiration (1) est faite d'un matériau élastomère permettant de créer une surface d'appui des feuilles (2) et comprenant des cavernes d'aspiration (3) constituées dans la tête d'aspiration (1) pour l'aspiration de la zone de bord de fuite des feuilles à saisir vers la surface de contact des feuilles (2)
  2. Dispositif de retournement de feuilles selon la revendication 1,
    caractérisé en ce que
    le système d'articulation (4) se présente sous la forme d'une articulation à charnière.
  3. Dispositif de retournement de feuilles selon la revendication 1 ou 2
    caractérisé en ce que
    l'axe de basculement (X) défini par le système d'articulation (4) se trouve près de la partie terminale située en aval, vue dans le sens de circulation des feuilles, de la tête d'aspiration (1)
  4. Dispositif de retournement de feuilles selon la revendication 2,
    caractérisé en ce que
    le système de charnière (4) se présente sous la forme d'une charnière en film.
  5. Dispositif de retournement de feuilles selon au moins une des revendications 1 à 4,
    caractérisé en ce que,
    après recouvrement de la section de contact des feuilles (2) par une section de feuilles, un mouvement de basculement de la tête d'aspiration (1) vers le dispositif de butée (5) peut être activé au moyen d'une dépression.
  6. Dispositif de retournement de feuilles selon au moins une des revendications 1 à 5,
    caractérisé en ce que
    la tête d'aspiration (1) est couplée à une base à doigt d'aspiration (7) au moyen du dispositif d'articulation (4).
  7. Dispositif de retournement de feuilles selon la revendication 6,
    caractérisé en ce que
    la base à doigt d'aspiration (7) comprend à l'intérieur un dispositif de conduction d'air (8) pouvant être raccourci ou refoulé axialement.
EP06005767A 2005-04-11 2006-03-21 Dispositif de retournement ayant un cylindre de retournement avec un dispositif d'aspiration Not-in-force EP1712357B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200520005682 DE202005005682U1 (de) 2005-04-11 2005-04-11 Abnahmesauger für eine Wendetrommel

Publications (3)

Publication Number Publication Date
EP1712357A2 EP1712357A2 (fr) 2006-10-18
EP1712357A3 EP1712357A3 (fr) 2009-12-09
EP1712357B1 true EP1712357B1 (fr) 2011-08-03

Family

ID=34684358

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06005767A Not-in-force EP1712357B1 (fr) 2005-04-11 2006-03-21 Dispositif de retournement ayant un cylindre de retournement avec un dispositif d'aspiration

Country Status (4)

Country Link
EP (1) EP1712357B1 (fr)
JP (1) JP2006289975A (fr)
AT (1) ATE518656T1 (fr)
DE (1) DE202005005682U1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD142861B1 (de) * 1979-04-02 1984-02-22 Planeta Druckmaschinenwerk Ag Einrichtung zur steuerung von saugersystemen in bogenfuehrungszylindern
DD142953A1 (de) 1979-05-07 1980-07-23 Guenter Weisbach Sauger in bogenwendeeinrichtungen von schoen-und widerdruckmaschinen
DE3608470A1 (de) * 1986-03-14 1987-09-24 Heidelberger Druckmasch Ag Umfuehrtrommel fuer den bogentransport in einer druckmaschine
DD248321A1 (de) 1986-04-21 1987-08-05 Polygraph Leipzig Sauger in wendetrommeln von druckmaschinen
DD249224C2 (de) * 1986-05-21 1988-05-18 Polygraph Leipzig Transferzylinder in druckmaschinen
DE4012498C1 (fr) 1990-04-19 1991-11-14 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
DE4012497A1 (de) 1990-04-19 1991-10-24 Roland Man Druckmasch Saugersteuerung in bogenuebergabetrommeln in mehrfarben-bogendruckmaschinen

Also Published As

Publication number Publication date
EP1712357A2 (fr) 2006-10-18
EP1712357A3 (fr) 2009-12-09
JP2006289975A (ja) 2006-10-26
DE202005005682U1 (de) 2005-06-16
ATE518656T1 (de) 2011-08-15

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