EP0780332A2 - Dispositif pour agir sur des feuilles dans un appareil de sortie de feuilles - Google Patents

Dispositif pour agir sur des feuilles dans un appareil de sortie de feuilles Download PDF

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Publication number
EP0780332A2
EP0780332A2 EP96117816A EP96117816A EP0780332A2 EP 0780332 A2 EP0780332 A2 EP 0780332A2 EP 96117816 A EP96117816 A EP 96117816A EP 96117816 A EP96117816 A EP 96117816A EP 0780332 A2 EP0780332 A2 EP 0780332A2
Authority
EP
European Patent Office
Prior art keywords
sheet
air
acting
tensioner
deformation
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.)
Granted
Application number
EP96117816A
Other languages
German (de)
English (en)
Other versions
EP0780332B1 (fr
EP0780332A3 (fr
Inventor
Richard Mack
Bernhard Waltenberger
Bernd 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
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 EP0780332A2 publication Critical patent/EP0780332A2/fr
Publication of EP0780332A3 publication Critical patent/EP0780332A3/fr
Application granted granted Critical
Publication of EP0780332B1 publication Critical patent/EP0780332B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/68—Reducing the speed of articles as they advance
    • B65H29/686—Pneumatic brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/52—Stationary guides or smoothers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/11—Means using fluid made only for exhausting gaseous medium producing fluidised bed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/21—Industrial-size printers, e.g. rotary printing press

Definitions

  • the invention relates to a device for acting on sheets in a sheet delivery of a printing press, in which sheets can be printed either on one side or on both sides.
  • a sheet straightener is provided for removing curls from the sheets when printing on one side and a guiding device for contact-free guidance of the sheets when printing on both sides.
  • the sheet straightener is fixed in place on the machine frame in a position set back with respect to the guide path of the guide device, and a guide element in the form of a plate is provided which is used to cover the sheet straightener on both sides. Pressure in the space between sheet guide plate and sheet straightener is movable.
  • the invention has for its object a sheet smoothing device integrated into the sheet conveying plane train that this can be easily brought into the cleaning position and do not smear the sheets in straight printing and in perfecting.
  • the integration of the surface of the sheet tensioner in the sheet conveying plane enables largely trouble-free sheet transport in one-sided and two-sided printing.
  • the flushing in of an air cushion ensures that the sheet is guided without lubrication, without peripherally mounted cover elements first having to be pivoted into the conveying plane.
  • the storage of the sheet tensioner with snap locks at four points guarantees problem-free pivoting or removal of the sheet tensioner in just a few steps.
  • the air is advantageously flushed in from one of the adjacent guide plates of the sheet conveying plane.
  • the adjacent baffles on the sheet conveying level are pressurized with compressed air at a low pressure level.
  • the bow tensioner according to the invention comprises domed deformation regions which are designed opposite one another.
  • the deformation areas can be provided with individual air nozzles, which extend in rows across the width of the sheet boom.
  • One of the deformation areas of the sheet tensioner is acted upon by suction air, while the opposite second deformation area can be acted upon by compressed air.
  • the pressure level for suction or blown air for the two deformation areas mentioned on the sheet tensioner is somewhat higher than the pressure level in the sheet conveying plane.
  • the air nozzles which are arranged in a row next to one another, are provided in the lower region of the first deformation region of the sheet tensioner, while the row of air nozzles in the second deformation region is designed to be somewhat higher in this region.
  • the bow tensioner is equipped with snap locks, with which it can be locked in or removed from the side walls in a few simple steps.
  • the first deformation area of the sheet tensioner seen in the sheet travel direction is acted upon by suction air, while the second deformation area of the sheet tensioner viewed in the sheet travel direction is subjected to blowing air.
  • a sheet tensioner 6 which is received in the sheet conveying plane, the guide plates 1 and 2.
  • the parts of the sheet conveying plane 1 or 2 are provided with a large number of air jets 3 which guide air jets in different directions and are formed from individual profiles 14 which delimit cavities 4 and 5, respectively.
  • a sheet tensioner 6 is mounted between an edge 15 of the sheet conveying plane 1 and the opposite edge of the sheet conveying plane 2. This is mounted by means of 7 and 8 designated locking pins or brackets in side walls, not shown here, of the sheet delivery of the printing press.
  • the sheet tensioner 6 comprises a first deformation area 11, as seen in the sheet running direction 18, and a second deformation area 12, both of which have a curved surface.
  • the bow tensioner 6 is laterally delimited by two boundary walls 10.
  • Reference number 9 denotes a connection for the air supply to the sheet tensioner.
  • a gap has remained between the downwardly tapering surfaces of the deformation regions 11 and 12, through which the deformation regions 11 and 12 are separated from one another.
  • FIG. 2 shows a top view of the sheet tensioner 6 received between the guide plates 1 and 2.
  • the baffles 1 and 2 which are also locked here only schematically with bearings in the side walls 17, are provided with a large number of air nozzles 3.
  • the individual nozzles are arranged symmetrically to the center of the conveying plane 21.
  • Reference number 3 denotes a nozzle group from which air jets emerge oriented in the lateral direction.
  • the air nozzles can be arranged perpendicular to the center of the conveying plane 21 or in a 15 °, 30 °, 45 ° orientation or any blowing angle orientation steps, gradually rotated relative to one another. With 20 a group of air nozzles is designated, which generates strictly laterally oriented air jets.
  • a first row of nozzles 16 opposite the first deformation area 11 of the sheet tensioner 6 is formed on the front edge of the guide plate 1.
  • the air flow which flushes in the air cushion over the deformation areas 11 and 12 of the sheet tensioner 6, can emerge from the latter in the case of pure face printing and in the perfecting mode, ie if the contact of the already printed underside with the stationary surfaces of the sheet tensioner 6 is to be avoided. Since cornering can also result in greasing when the printing is face-up, flushing in an air cushion is also useful in this operating mode.
  • the air cushion which is generated by the first row of nozzles 16, reaches up to the guide plate 2, on which the laterally blowing nozzles 19, which are subjected to blowing air of a lower pressure level, exert a laterally tightening effect on the sheets 13 to be conveyed becomes.
  • the deformation areas 11 and 12 are shown viewed from above. These are each with two brackets 7 and 8 in the side walls 17 of the sheet delivery of the printing press stored.
  • the brackets can be provided with spring locking bolts, with the tensioner 6 being released by simply pulling the bolts inwards.
  • the sheet tensioner 6 could also be held in position by the brackets 7 and 8 and released by pressing from the operating side onto the opposite pair of brackets 7 and 8 on the operating side and then simply unhooked thereafter; it is also possible to pivot the sheet tensioner 6 after pulling only two brackets 7 and 8.
  • the two sheet guide plates 1 and 2 are provided with a large number of air nozzles 3 oriented in different directions.
  • Both baffles 1 and 2 are each provided with a blower 26 or 29, whereby low-pressure air of a pressure level, for example between 5 and 20 mbar, is introduced into the cavities below these baffles.
  • the deformation areas 11, 12 of the sheet tensioner 6 are acted upon by blowing or suction air of a higher pressure level.
  • the first deformation area 11, seen in the direction of sheet travel 18, is subjected to suction air with a negative pressure of, for example, approximately 80 mbar and is provided with a row of suction nozzles 23 in its lower area.
  • the second deformation region 12 opposite the first deformation region 11 is provided with a row of blowing nozzles 22 and is supplied with blowing air at a pressure level between 100 and 250 mbar.
  • the first deformation region 11 is consequently connected to a vacuum source 28, the second deformation region 12 to a blower.
  • this gusset is bridged between the two deformation areas 11 and 12, so that the already printed underside of the sheet 13 does not come into contact with the surfaces of the sheet tensioner 6 during perfecting and printing.
  • an air cushion carrying the sheet 13 can be produced by the sheet guide plates 1 and 2 before it passes the sheet tensioner 6.
  • the sheet is then smoothed by the action of blown air 25 on its upper side above the gap 24, contact of the sheet 13 with the surfaces of the deformation regions 11 and 12 being less critical, but turning the sheet 13 there and thus lubricating it can come.
  • Fig. 4 the process of bow tightening when passing the bow tightener is shown schematically.
  • an air cushion 31 is created under the straight area of the curve 13 above the guide plates 1 and 2.
  • the arch 13 is tightened by deforming the arch 13 by blowing air 25 from above when it is above the gusset of the gap 24.
  • the arch 13 conforms to the contour of the first and second deformation areas 11, 12 of the arch tensioner 6. The action of blowing and suction air on the rows of nozzles 22 and 23 prevents the arc 13 from being immersed by generating an opposing air flow into the gap 24.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Advancing Webs (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Discharge By Other Means (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
EP96117816A 1995-12-20 1996-11-07 Dispositif pour agir sur des feuilles dans un appareil de sortie de feuilles Expired - Lifetime EP0780332B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19547546 1995-12-20
DE19547546A DE19547546A1 (de) 1995-12-20 1995-12-20 Vorrichtung zur Einwirkung auf Bogen in einem Bogenausleger

Publications (3)

Publication Number Publication Date
EP0780332A2 true EP0780332A2 (fr) 1997-06-25
EP0780332A3 EP0780332A3 (fr) 1998-03-25
EP0780332B1 EP0780332B1 (fr) 1999-09-15

Family

ID=7780636

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96117816A Expired - Lifetime EP0780332B1 (fr) 1995-12-20 1996-11-07 Dispositif pour agir sur des feuilles dans un appareil de sortie de feuilles

Country Status (5)

Country Link
US (1) US5832826A (fr)
EP (1) EP0780332B1 (fr)
JP (1) JPH09174816A (fr)
AT (1) ATE184570T1 (fr)
DE (2) DE19547546A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1184315A3 (fr) * 2000-08-31 2003-09-10 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif suppresseur du cintrage pour matériaux imprimés plats

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU703647B1 (en) * 1998-06-16 1999-03-25 Qi Press Controls Holding Bv Device to compensate for print misregister due to paper distortion on web offset printing presses
DE29817879U1 (de) 1998-10-07 1998-12-17 MAN Roland Druckmaschinen AG, 63075 Offenbach Bogenführungseinrichtung für einseitig oder beidseitig bedruckte Bogen in einer Druckmaschine
US6937330B2 (en) 1999-04-23 2005-08-30 Ppd Biomarker Discovery Sciences, Llc Disposable optical cuvette cartridge with low fluorescence material
US6687395B1 (en) 1999-07-21 2004-02-03 Surromed, Inc. System for microvolume laser scanning cytometry
US6787761B2 (en) 2000-11-27 2004-09-07 Surromed, Inc. Median filter for liquid chromatography-mass spectrometry data
US6890409B2 (en) * 2001-08-24 2005-05-10 Applera Corporation Bubble-free and pressure-generating electrodes for electrophoretic and electroosmotic devices
US6873915B2 (en) 2001-08-24 2005-03-29 Surromed, Inc. Peak selection in multidimensional data
US20030078739A1 (en) * 2001-10-05 2003-04-24 Surromed, Inc. Feature list extraction from data sets such as spectra
US7144106B2 (en) 2001-10-17 2006-12-05 Seiko Epson Corporation Fixed material transportation apparatus and liquid fixing apparatus using the transportation apparatus
CN1212234C (zh) * 2001-10-17 2005-07-27 精工爱普生株式会社 被固定件输送装置以及液体固定装置
US6989100B2 (en) 2002-05-09 2006-01-24 Ppd Biomarker Discovery Sciences, Llc Methods for time-alignment of liquid chromatography-mass spectrometry data
US7248360B2 (en) * 2004-04-02 2007-07-24 Ppd Biomarker Discovery Sciences, Llc Polychronic laser scanning system and method of use
US7419462B1 (en) * 2005-06-13 2008-09-02 Dixie Consumer Products Llc Pressware die set with pneumatic blank feed
CN102026560B (zh) * 2008-03-11 2014-12-17 科福罗有限公司 用于局部控制扁平物体的支撑的方法和系统
US9889995B1 (en) * 2017-03-15 2018-02-13 Core Flow Ltd. Noncontact support platform with blockage detection

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4427897C1 (de) 1994-08-06 1995-09-28 Roland Man Druckmasch Vorrichtung für einen Bogenausleger

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US3076492A (en) * 1959-10-30 1963-02-05 Standard Packaging Corp Apparatus for removing the curl from sheets
NL246372A (fr) * 1959-12-12
US3550556A (en) * 1968-01-11 1970-12-29 Xerox Corp Development apparatus
JPS4837611B1 (fr) * 1969-07-03 1973-11-12
US3719169A (en) * 1971-05-07 1973-03-06 Xerox Corp Plural electrode development apparatus
GB1458766A (en) * 1973-02-15 1976-12-15 Xerox Corp Xerographic developing apparatus
IT998400B (it) * 1973-05-10 1976-01-20 Carstedt Howard Apparecchiatura per curvare in continua dei metalli in fogli in particolare per macchine da stampa
US3975057A (en) * 1975-02-06 1976-08-17 The Motch & Merryweather Machinery Company Stopping device for air conveyor
US4002047A (en) * 1975-07-07 1977-01-11 Baldwin-Gegenheimer Corporation Sheet material decurling apparatus
US4013284A (en) * 1975-10-14 1977-03-22 Eastern Graphic Products, Inc. Decurler device
DE2811963C2 (de) * 1978-03-18 1985-01-17 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Bogenauslagevorrichtung an Druckmaschinen
CA1138723A (fr) * 1978-07-28 1983-01-04 Tsutomu Toyono Methode et appreil de developpement pour transfert de revelateur par polarisation electrique
DE3044649C2 (de) * 1980-11-27 1982-11-18 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zum Aufstreichen von Bogen auf Druckzylinder von Druckmaschinen
JPS57195054A (en) * 1981-05-21 1982-11-30 Sakurai Seisakusho:Kk Curl correcting device for printing sheet, in offset press
DE3345201A1 (de) * 1983-12-14 1986-04-24 Werner J. 8901 Diedorf Kotterer Vorrichtung zum glaetten von bogen
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Publication number Priority date Publication date Assignee Title
DE4427897C1 (de) 1994-08-06 1995-09-28 Roland Man Druckmasch Vorrichtung für einen Bogenausleger

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1184315A3 (fr) * 2000-08-31 2003-09-10 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif suppresseur du cintrage pour matériaux imprimés plats

Also Published As

Publication number Publication date
JPH09174816A (ja) 1997-07-08
DE59603062D1 (de) 1999-10-21
DE19547546A1 (de) 1997-07-03
EP0780332B1 (fr) 1999-09-15
EP0780332A3 (fr) 1998-03-25
ATE184570T1 (de) 1999-10-15
US5832826A (en) 1998-11-10

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