EP1184175B1 - Cylindre à transport des feuilles - Google Patents

Cylindre à transport des feuilles Download PDF

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Publication number
EP1184175B1
EP1184175B1 EP01118862A EP01118862A EP1184175B1 EP 1184175 B1 EP1184175 B1 EP 1184175B1 EP 01118862 A EP01118862 A EP 01118862A EP 01118862 A EP01118862 A EP 01118862A EP 1184175 B1 EP1184175 B1 EP 1184175B1
Authority
EP
European Patent Office
Prior art keywords
air
sheet transport
transport cylinder
throttled
throttle
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
EP01118862A
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German (de)
English (en)
Other versions
EP1184175A1 (fr
Inventor
Eckart Dr. Frankenberger
Michael Gieser
Peter Dr. Hachmann
Karl-Heinz Helmstädter
Christian Hieb
Ruben Dr. Schmitt
Günter Stephan
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
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Filing date
Publication date
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Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP1184175A1 publication Critical patent/EP1184175A1/fr
Application granted granted Critical
Publication of EP1184175B1 publication Critical patent/EP1184175B1/fr
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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
    • B41F21/10—Combinations of transfer drums and grippers
    • B41F21/102—Combinations of transfer drums and grippers with pneumatic means

Definitions

  • the invention relates to a sheet transport cylinder in a printing material sheet processing machine, with air nozzles for dimensioned from a minimum format to a maximum format sheet sizes of the printing material, according to the preamble of claim 1.
  • Unfavorable is the time required for a format change, which is necessary in the case of manual operation for this same and in the case of control by the machine control for monitoring them.
  • US 2753181 shows a drum for guiding a material web.
  • the drum has Saugluftö Maschinenen, which valves are connected upstream, each comprising an air passage opening and a spring plate for closing the air passage opening.
  • the valves are self-closing by the suction air draws at its not covered by the material web Saugluftö Maschinenen the respective valve whose spring leaflets against the air passage opening.
  • DE-A-2155085 shows a pressure reducing device having a porous storage device for stowing a gas.
  • This stowage device can, for. B. gauze layers, expanded metal, sintered metal, ceramic foams or plastic foams.
  • US 4411292 shows a fluid flow restrictor which includes a helical or helical winding inserted in the flow path.
  • WO-A-99/11551 shows a vacuum drum for printing presses.
  • the vacuum drum comprises valves with springs which are spirally curved.
  • the invention is therefore an object of the invention to provide a sheet transport cylinder of the type mentioned with a less complicated format change.
  • a variant of the invention is located in the air throttle as part of a so-called Schüttklale whose bulk bodies form flow resistance for the air flowing through the air throttle and generated by the air pressure generator suction or blowing air.
  • the choke piece is in the air throttle as its constituent a filter-like throttle piece, which forms a flow resistance for the suction or blowing air.
  • the choke piece is a textile layer that may be woven or unwoven.
  • the throttle piece may also be a porous and therefore air-permeable sponge, which is foamed from a plastic.
  • the air throttle is occupied by projecting into the flow path of the suction or blowing air air forces, which limit vortex chambers.
  • the air throttle is designed as a so-called perforated plate labyrinth.
  • An advantage of the sheet transport cylinder according to the invention is that when switching to smaller sheet formats due to the low volume flow through the throttled air nozzles none of these Gutabsperrils concerned are required.
  • the throttled air nozzles are arranged at positions of a peripheral surface of the sheet transport cylinder uncovered by the minimum format.
  • the throttled air nozzles are therefore located behind a trailing edge and / or next to a side edge of the transported by the sheet transport cylinder minimum format.
  • throttled air nozzles are suction nozzles
  • the latter development minimizes a false airflow flowing through the uncovered, throttled air nozzles into an air duct system of the sheet transport cylinder so that the vacuum prevailing in the air duct system remains substantially functionally undisturbed.
  • the throttled nozzles of the last-mentioned embodiment are blowing air nozzles, a false air stream flowing out of the air line system through the uncovered unthrottled nozzles is minimized, so that the energy consumption required for blowing air generation and the noise pollution caused by the false air are reduced.
  • the unthrottled air nozzles are covered by the minimum format.
  • the minimum format For example, only unthrottled air nozzles and no throttled air nozzles may be disposed within the minimum surface area covered by the minimum format. Within the peripheral surface area but also both throttled air nozzles and unthrottled air nozzles can be arranged.
  • each of the throttled air nozzles is connected via an air throttle with an air pressure generator.
  • the air restrictor can be integrated into the air duct system away from the respective throttled air nozzle. This is favorable if an air throttle is provided which is pneumatically connected via the air line system simultaneously with a plurality of throttled air nozzles.
  • the air throttle and the throttled by the latter air nozzle can also form a structural unit in the form of a throttle nozzle.
  • each of the sheet transport cylinders 1 and 2 has a gripper bridge 6.
  • throttled air nozzles 7, 8, in the Figures 1 and 2 are marked with crosses, and unthrottled air nozzles 9, 10 introduced.
  • the air nozzles 7, 9 are arranged in the direction of the format length of the printing material sheet extending circumferential rows and in the direction of the format width extending transverse rows of a nozzle grid. All air nozzles of the nozzle grid lying outside a circumferential surface area covered by the minimum format 4 are throttled. Within the covered peripheral surface area both throttled air nozzles and unthrottled air nozzles are arranged. The circumferential row 11 has alternately throttled and unthrottled air nozzles within the covered peripheral surface area. Likewise, it is provided in the transverse row 12. All air nozzles 7, 9 of the sheet transport cylinder 1 are blowing nozzles. An embodiment of these air nozzles 7, 9 as suction nozzles is also conceivable.
  • FIG. 2 - Are the air nozzles 8, 10 formed as suction nozzles and arranged in an axis-parallel to the sheet transport cylinder 2 transverse row 13, which in the circumferential direction of the sheet transport cylinder 2 continuously from a first position is stored in a second position and back adjustable.
  • the air nozzles 8, 10 In the first position of the transverse row 13 are the air nozzles 8, 10 close to a trailing edge of the minimum format 4 below this.
  • the air nozzles 8, 10 close to a trailing edge of the maximum format 5 below this.
  • All air nozzles of the transverse row 13 lying outside a region covered by the minimum format 4 are throttled and all air nozzles of the transverse row 13 lying within this range are unthrottled. Also in FIG. 2 are the throttled air nozzles, z. B. air nozzle 8, marked with a cross and have the unthrottled air nozzles, z. B. air nozzle 10, no such mark on.
  • FIG. 3 shows the connection of several throttled air nozzles of the sheet transport cylinder 1 or 2 via an air line system 14 to a motor-driven air pressure generator 15, z. B. a fan. If it is the connected air nozzles to Blas Kunststoffdüsen the sheet transport cylinder 1, such.
  • the air pressure generator 15 is a positive pressure generator. Is it connected to the air nozzles to suction nozzles of the sheet transport cylinder 2, such.
  • the air pressure generator 15 is a vacuum generator, as shown in FIG. 3 symbolically indicated.
  • Each of the throttled air jets connected to the air pressure generator 15 is associated with an air throttle 416, 516, 616, 716 or 816 which may be disposed in the respective throttled air jets 7 or 8 or, as shown, in the air duct system 14.
  • the air throttle 416, 516, 616, or 716 has a throttle inlet 17 in a throttle ceiling 18 and a throttle outlet 19 in a throttle bottom 20.
  • reference numerals 17 and 19 refers to the case in which the air throttle 416, 516, 616, 716 or 816 is flowed through by suction air from the air nozzle 7. In the other case, when the air throttle 416, 516, 616, 716 or 816 is flowed through by blast air directed to the air nozzle 8, an interchangeable conceptual assignment of the reference numerals 17 and 19 applies.
  • the throttle cover 18 and the throttle bottom 20 form the upper or lower boundary of an interposed throttle chamber 21, which is traversed by the suction or blowing air of the air pressure generator 15.
  • a bed 22 of Schütt Scienceschen such as granules, fibers, chips or globules, which is held together on both sides by a network or grid 23.
  • the bulk particles can also be sintered to one another for their stabilization.
  • the bed 22 communicating with each other cavities through which the suction or blowing air flows.
  • the bed 22 fills the cross-section of the throttle chamber 21 completely, so that the entire suction or blowing air must flow through the bed 22 and is throttled therein by impoundments on the bulk bodies and turbulence in the cavities.
  • FIG. 4 with the detailed reference numerals 17 to 21 marked components can also be found in the in the FIGS. 5 to 8 shown variants of the air throttle 516, 616, 716 and 816 again, so that in the FIGS. 5 to 8 the reuse of the reference numerals 17 to 21 without their repeated explanation 8 is possible.
  • the bed 22 by an inserted into the throttle chamber 21 textile throttle 24, such.
  • a fabric or nonwoven fabric replaced.
  • this may consist of a single sufficiently voluminous layer or wound into a multi-layer insert or clamped in the throttle chamber 21.
  • the flowing through the throttle piece 24 suction or Blow air is throttled by impoundments on threads or fibers and by turbulence in the pores of the throttle piece 24.
  • FIGS. 6 a horizontal section along section line VI a - VI a in FIG. 6 b
  • 6b vertical section along section line VIb - VIb in FIG. 6 a
  • an air throttle 616 is shown, the shipsleitance 25 and 26 in the throttle chamber 21 at an angle, in particular orthogonal, are arranged so that the suction or blowing air between the shipsleit propositionn 25 and 26 from the throttle inlet 17 to Drosselauslass 19 conductive air channel 27 in the form a polygonal spiral.
  • the suction or blowing air flowing through the air duct accumulates in corner angles 28 and 29 of the air duct 27 and swirls at corner edges 30 and 31 of the air guide walls 25 and 26, so that the air flow is throttled.
  • the air guide walls 25 and 26 have a very strong surface roughness, the z. B. caused by a treatment of the air guide walls 25 and 26 by means of sandblasting and contributes to the reduction of the flow velocity of the suction or blowing air in the air channel 27 by increasing the friction.
  • the throttle chamber 21 is occupied by air struts 32 and 33 in the form of jam walls.
  • the Luftwehre 32, 33 are arranged alternately in two rows and each other except for narrow air gaps 34 and 35 overlapping. Between the air forces 32 and 33 are vortex chambers 36 and 37, which together with the air gaps 34 and 35 form a leading from the throttle inlet 17 to Drosselauslass 19 meandering air duct, in which the suction or blowing air is throttled.
  • FIG. 8 is a section of the air throttle 816 shown, which consists of the throttle chamber 21 in sandwich construction superposed perforated plates 38 and 39.
  • each has at least one hole 40 (or 41) offset in the plane of the plate from at least one hole 41 (or 40) of the adjacent perforated plate.
  • the meandering air channel forming holes 40 and 41 are out of alignment with each other and in registration with closed plate surfaces of the perforated plates 38 and 39.
  • Spacers 42 and 43 keep the perforated plates 38 and 39 spaced from each other and define volumes of between the perforated plates 38 and 39 Whirl chambers 44 and 45, which are flowed through by the suction or blowing air.
  • the latter accumulates in front of the bottlenecks in the flow path representing holes 40 and 41 and swirled in the swirl chambers 44 and 45.
  • the throttling effect of the air throttle 816 is based as well as the throttling action of the air throttles 616 and 716 in a reduction in the flow rate of the suction or blowing air by multiple Deflection of the air flow in the throttle chamber 21st
  • the throttled suction nozzle exerts a comparatively small attraction force on the printing material sheet in the far-end area and a comparatively large attraction force in the vicinity, wherein the suction force exerted on the printing material sheet in the direction of the proximity area is disproportionately large, ie. H. more than linear increases.
  • the suction nozzle fixes the printing material sheet only when the latter is sufficiently close to the suction nozzle, which is a desired effect in many applications.

Landscapes

  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Advancing Webs (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Claims (8)

  1. Cylindre de transport de feuilles (1, 2) dans une machine de traitement de feuilles de matière à imprimer avec des buses d'air (7 à 10) pour des formats de feuilles dimensionnées d'un format minimal (4) à un format maximal (5) des feuilles de matière à imprimer,
    caractérisé en ce que toutes ou quelques unes des buses d'air (7 à 10) sont des buses d'air à étranglement (7, 8) qui sont disposées de manière adaptée au format minimal (4) et en ce qu'au moins l'un des étrangleurs d'air (416, 516, 616, 716, 816) est associé à l'une des buses d'air à étranglement (7, 8)
    l'étrangleur d'air (416) comprenant une décharge en vrac (22), une pièce d'étranglement en forme de filtre (24), un canal d'air en forme de spirale (27), des chicanes saillantes (32, 33) avec des chambres de tourbillonnement (36, 37) disposées entre ces dernières ou des plaques perforées (38, 39) disposées les unes sur les autres avec des chambres de tourbillonnement (44, 45) disposées entre ces dernières.
  2. Cylindre de transport de feuilles selon la revendication 1, caractérisé en ce que les buses d'air (7 à 10) comprennent à côté des buses d'air étranglées (7, 8) également des buses d'air non étranglées (9, 10).
  3. Cylindre de transport de feuilles selon la revendication 2, caractérisé en ce que les buses d'air (7, 8) étranglées sont disposées à l'extérieur d'une zone de surface périphérique du cylindre de transport de feuilles (1, 2), couverte par le format minimal (4)
  4. Cylindre de transport de feuilles selon la revendication 3, caractérisé en ce qu'exclusivement les buses d'air étranglées (7, 8) sont disposées à l'extérieur de la zone de surface périphérique.
  5. Cylindre de transport de feuilles selon la revendication 3 ou 4, caractérisé en ce que les buses d'air (9, 10) non étranglées sont disposées à l'intérieur de la zone de surface périphérique.
  6. Cylindre de transport de feuilles selon l'une des revendications 1 à 5, caractérisé en ce que les buses d'air étranglées sont des buses d'aspiration.
  7. Cylindre de transport de buses selon l'une des revendications 1 à 5, caractérisée en ce que les buses d'air étranglées sont des buses de soufflage.
  8. Machine pour le traitement de feuilles de matière imprimée, en particulier une machine d'impression de feuille à rotative (3), avec au moins un cylindre de transport de feuilles (1, 2) réalisé selon l'une des revendications 1 à 7.
EP01118862A 2000-08-31 2001-08-16 Cylindre à transport des feuilles Expired - Lifetime EP1184175B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10042885 2000-08-31
DE10042885A DE10042885A1 (de) 2000-08-31 2000-08-31 Bogentransportzylinder

Publications (2)

Publication Number Publication Date
EP1184175A1 EP1184175A1 (fr) 2002-03-06
EP1184175B1 true EP1184175B1 (fr) 2008-10-08

Family

ID=7654493

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01118862A Expired - Lifetime EP1184175B1 (fr) 2000-08-31 2001-08-16 Cylindre à transport des feuilles

Country Status (5)

Country Link
US (1) US6612236B2 (fr)
EP (1) EP1184175B1 (fr)
JP (1) JP2002128315A (fr)
AT (1) ATE410305T1 (fr)
DE (2) DE10042885A1 (fr)

Families Citing this family (13)

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Publication number Priority date Publication date Assignee Title
DE60226161T2 (de) * 2001-10-22 2009-07-02 Pfizer Products Inc., Groton 3-azabicyclo[3.1.0]hexan derivative als antagonisten der opioid rezeptoren
DE10346782A1 (de) 2002-10-30 2004-05-13 Heidelberger Druckmaschinen Ag Bogentransporttrommel einer Bedruckstoffbogen verarbeitenden Maschine
DE602005014315D1 (de) * 2004-10-04 2009-06-18 Oce Tech Bv Vorrichtung zum Handhaben von Bögen
DE102006017461B4 (de) 2005-05-02 2022-06-09 Heidelberger Druckmaschinen Ag Verfahren und Vorrichtung zum Tragen eines Bedruckstoffbogens auf einem Luftpolster
US7594656B2 (en) * 2005-07-20 2009-09-29 Alps Electric Co., Ltd. Paper feed mechanism
CN101269760B (zh) 2007-03-23 2011-11-16 海德堡印刷机械股份公司 收纸滚筒及双面印刷机
JP5282195B2 (ja) * 2008-04-21 2013-09-04 Ｓｍｃ株式会社 流体圧機器
DE202010001174U1 (de) * 2009-01-27 2010-04-22 Manroland Ag Speichertrommel-Anordnung und damit ausgerüstete Bogendruckmaschine
DE102010023485A1 (de) * 2009-07-09 2011-01-13 Heidelberger Druckmaschinen Ag Bogenführungstrommel
US8388246B2 (en) * 2009-09-15 2013-03-05 Xerox Corporation Web driven vacuum transport
JP5783965B2 (ja) * 2012-07-24 2015-09-24 富士フイルム株式会社 メディア保持装置、メディア搬送装置、及び、インクジェット記録装置
CN102825904B (zh) * 2012-09-03 2014-10-22 瑞安市纸品机械有限公司 压痕烫金机的正纸装置
US11117774B2 (en) * 2019-04-23 2021-09-14 Xerox Corporation Apparatus for controlling sheet flatness under an imaging system robust to media curl

Citations (4)

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Publication number Priority date Publication date Assignee Title
US2753181A (en) * 1953-05-14 1956-07-03 Powers Chemico Inc Feed mechanism for web material
DE2155085A1 (de) * 1970-11-06 1972-05-10 Dunlop Holdings Ltd , London Druckreduziervorrichtung
US4411292A (en) * 1981-11-30 1983-10-25 Arminio Schiller Fluid flow restrictor device
WO1999011551A1 (fr) * 1997-09-04 1999-03-11 Xaar Technology Limited Tambours a depression pour impression et imprimantes duplex

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US4043360A (en) * 1975-07-16 1977-08-23 Incontrol Ltd. Pressure reducing device for fluids
DE2828318A1 (de) * 1978-06-28 1980-01-10 Winkler Duennebier Kg Masch Saugwalze
US5327941A (en) * 1992-06-16 1994-07-12 The United States Of America As Represented By The Secretary Of The Navy Cascade orificial resistive device
DE4315527C2 (de) * 1993-05-10 2001-05-03 Heidelberger Druckmasch Ag Mehrwegabsperrschieber für die Saugluft von Sauggreifern auf einer Bogenübergabetrommel
US5542659A (en) 1993-05-10 1996-08-06 Heidelberger Druckmaschinen Ag Multi-way slide-type shutoff valve for suction air of suction-type grippers on a sheet-transfer drum
DE19854844A1 (de) * 1997-12-24 1999-07-01 Heidelberger Druckmasch Ag Vorrichtung zur Saugluftsteuerung
US5913268A (en) * 1998-02-17 1999-06-22 Xerox Corporation Pneumatic rollers and paper handling arrangements
DE19905095C2 (de) * 1999-02-09 2001-02-22 Roland Man Druckmasch Bogenführungseinrichtung für eine Druckmaschine
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Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2753181A (en) * 1953-05-14 1956-07-03 Powers Chemico Inc Feed mechanism for web material
DE2155085A1 (de) * 1970-11-06 1972-05-10 Dunlop Holdings Ltd , London Druckreduziervorrichtung
US4411292A (en) * 1981-11-30 1983-10-25 Arminio Schiller Fluid flow restrictor device
WO1999011551A1 (fr) * 1997-09-04 1999-03-11 Xaar Technology Limited Tambours a depression pour impression et imprimantes duplex

Also Published As

Publication number Publication date
EP1184175A1 (fr) 2002-03-06
ATE410305T1 (de) 2008-10-15
DE10042885A1 (de) 2002-03-14
US6612236B2 (en) 2003-09-02
US20020046667A1 (en) 2002-04-25
JP2002128315A (ja) 2002-05-09
DE50114379D1 (de) 2008-11-20

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