EP0755887B1 - Verfahren und Vorrichtung zum pneumatischen Bogenabbremsen im Ausleger einer Bogenrotationsdruckmaschine - Google Patents

Verfahren und Vorrichtung zum pneumatischen Bogenabbremsen im Ausleger einer Bogenrotationsdruckmaschine Download PDF

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Publication number
EP0755887B1
EP0755887B1 EP96110376A EP96110376A EP0755887B1 EP 0755887 B1 EP0755887 B1 EP 0755887B1 EP 96110376 A EP96110376 A EP 96110376A EP 96110376 A EP96110376 A EP 96110376A EP 0755887 B1 EP0755887 B1 EP 0755887B1
Authority
EP
European Patent Office
Prior art keywords
sheet
braking
blowing
air
directed
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
EP96110376A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0755887A3 (de
EP0755887A2 (de
Inventor
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
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 EP0755887A2 publication Critical patent/EP0755887A2/de
Publication of EP0755887A3 publication Critical patent/EP0755887A3/de
Application granted granted Critical
Publication of EP0755887B1 publication Critical patent/EP0755887B1/de
Anticipated expiration legal-status Critical
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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
    • 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 method and to a Device for pneumatic sheet braking in the delivery a sheet-fed rotary printing press using blowing air, which the Sheet transport direction is opposite.
  • the bow comes up full width with the blow bar completely, or in individual zones, rubbing against each other, so that especially in the Fine and reverse printing slight smearing arise.
  • the blow bar closes against the A baffle bent downward in the shape of a horn with tongues cut free.
  • the blow out of the Blowing bar directed under the bow blowing air overflows the curved surface and hugs the arch by negative pressure to the lead tongues.
  • the invention has for its object a solution for a contactless braking an arc carried on the braking path by a stream of air in the boom one Sheet-fed rotary printing press for high-quality printed products Lubrication phenomena, especially in the perfect and reverse printing, when braking the sheet to avoid.
  • a Device provided in which one against the Directional blowing nozzles having sheet transport direction Blow nozzle bar at least on its rear edge rounded cross-sectional profile and blow nozzles still in the area this has roundings. It is through these training characteristics a vacuum under the arch and thus one Avoid sucking the bow.
  • Floating between the bow to the braking distance transporting blowing device and a blowing device for braking the bow by opposing it directed blowing air is a channel for discharging the opposed air flows arranged.
  • the air volume and the air pressure can be adjustable. Further Control options result from adjustable Blow nozzles with adjustable throttle and in the direction adjustable nozzle openings.
  • the drawing shows schematic representations of Explanation of the method according to the invention and Design of a device for the exercise of such Process.
  • FIG. 1 shows a sheet delivery with the sheet gripper 1 one arranged on rotating conveyor chains 2 Gripper system 3 the sheet 4 each at its in Detect the transport direction of the front edge and the last one Printing unit of a sheet-fed rotary printing press for Guide delivery pile 5.
  • the deceleration begins at high speed incoming sheet 4. over an over the sheet width extending blow nozzle bar 6 with a rounded cross-section Top and arranged on their top blowing nozzles directed against the transport direction of the sheet 4 Blown air among those by the bow gripper 1 Gripper systems 3 blown released blows.
  • Figure 2 shows a graph the formation of the shear stresses Speed distribution in the direction of sheet transport opposing airflow, the arc non-contact at a transport level with a distance above the leadership levels determined by mechanical installations is worn without contact. Which is in the airflow shear stresses act on the kinetic energy of the arch so that the arch is continuous is braked. It makes sense not to get the bow up to Decelerate standstill, but only up to one Remaining speed, which is still a good sheet deposit on the Delivery pile enabled.
  • FIGs in Figures 3 and 4 show the training a braking distance for the bow following one non-contact sheet guidance through blown air directed towards the sheet transport is blown under sheet 4.
  • the two colliding air flows one of which is to Sheet conveying directed in the transport direction of the sheet and one for braking the bow against the Sheet conveying direction is directed via a channel 8 derived below and, if necessary, via the regulatory body 7 blown again as brake air under sheet 4.
  • schematically 4 is the outflow direction of the blow nozzles in the Blow bar 6 in two alternative embodiments shown.
  • FIG. 5 An embodiment for the design of the Blow nozzle bar 6 is shown in Figures 5 and 6.
  • the Cross section in Figure 5 shows a formed from sheet metal Blow nozzle bar 6 with a connecting piece 10 for the Blowing air.
  • In the transport direction of the sheet 4 is both Front edge as well as the rear edge of the blow nozzle bar 6 rounded.
  • the air blows against the direction of conveyance of the sheet 4 by blowing nozzles 9, which by tongue-shaped Incisions 11 on the top of the blow nozzle bar 6 are formed.
  • Such incisions 11 are also in Area of the rounding of the blow nozzle bar 6 to this Assign the formation of a vacuum under the sheet 4 avoid.
  • a sheet guide 12 the Trailing edge of the sheet 4 on the main stack 5 in the delivery.
  • FIG. 7 The principle of operation of the inventive method for Bow braking by blowing air is shown in FIG. 7 illustrated.
  • Gripper system 3 is held at its leading edge sheet 4 in the area of the braking section against the direction of transport of the arc blowing air from the blowing nozzles 9 of the blowing nozzle bar 6 blown, thereby tightening and stretching the bow 4 he follows.
  • 4 shear stresses form under the arch according to the representation in Figure 2, by the a braking of the sheet 4 after its release by the Gripper system takes place.
  • the sheet 4 is transported contact-free on the air flow to slow down the Sheet 4.
  • the sheet is transported before the braking section an air flow which is in the conveying direction of the sheet is directed.
  • This air flow carrying the bow 4 and the air flow directed towards it for pneumatic Sheet braking are immediately before the braking distance for the Sheet 4 derived downwards.
  • the possible repatriation of the derived air flow was explained for Figure 3.
  • FIG. 8 illustrates the scaled Sheet transport to delivery pile 5. While the rear one is still End of a sheet 4 already released by the gripper system 3 the shear stresses caused by surface friction Brake air is exposed, a subsequent sheet 4 is still held by the gripper system 3 and in the direction of conveyance directed airflow carried. Only when the back end of the former arc 4, the channel 8 for discharging the air Sheet conveying and the brake air to brake the sheet released, also form under the second arch Shear stresses for braking the bow. To this In this way, a completely contact-free curved flaking takes place with the help of the hover guide in front of the braking section, which also saves time for braking the bow is achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Discharge By Other Means (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
EP96110376A 1995-07-27 1996-06-27 Verfahren und Vorrichtung zum pneumatischen Bogenabbremsen im Ausleger einer Bogenrotationsdruckmaschine Expired - Lifetime EP0755887B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19527441A DE19527441C2 (de) 1995-07-27 1995-07-27 Verfahren und Vorrichtung zum pneumatischen Bogenabbremsen im Ausleger einer Bogenrotationsdruckmaschine
DE19527441 1995-07-27

Publications (3)

Publication Number Publication Date
EP0755887A2 EP0755887A2 (de) 1997-01-29
EP0755887A3 EP0755887A3 (de) 1997-10-15
EP0755887B1 true EP0755887B1 (de) 2002-01-30

Family

ID=7767923

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96110376A Expired - Lifetime EP0755887B1 (de) 1995-07-27 1996-06-27 Verfahren und Vorrichtung zum pneumatischen Bogenabbremsen im Ausleger einer Bogenrotationsdruckmaschine

Country Status (7)

Country Link
US (1) US5718176A (ja)
EP (1) EP0755887B1 (ja)
JP (1) JP3676503B2 (ja)
CN (1) CN1144187A (ja)
AT (1) ATE212601T1 (ja)
CA (1) CA2180061A1 (ja)
DE (2) DE19527441C2 (ja)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10129886A (ja) * 1996-10-15 1998-05-19 Heidelberger Druckmas Ag 枚葉紙処理機械の自動給紙機における枚葉紙用紙差し板
DE19914177A1 (de) * 1999-03-29 2000-10-05 Heidelberger Druckmasch Ag Ausleger einer Bogen verarbeitenden Druckmaschine
DE10049809B4 (de) * 1999-10-28 2014-02-13 Heidelberger Druckmaschinen Ag Leitvorrichtung für einen flächenhaften Bedruckstoff
DE10043807B4 (de) * 1999-12-17 2009-05-07 Heidelberger Druckmaschinen Ag Ausleger einer flächige Bedruckstoffe verarbeitenden Maschine
DE10133633A1 (de) * 2000-08-31 2002-03-14 Heidelberger Druckmasch Ag Leit-und Tragelemente mit gedrosselter Blasluft
US7513499B2 (en) * 2004-05-04 2009-04-07 Heidelberger Druckmaschinen Ag Sheet brake using a partitioned blower nozzle array
US8454665B2 (en) * 2005-09-16 2013-06-04 Christopher G. Sidebotham Multi-purpose bone plate system
DE102008010985A1 (de) * 2008-02-25 2009-08-27 Heidelberger Druckmaschinen Ag Bogenbremseinrichtung
US7913999B2 (en) * 2008-06-12 2011-03-29 Xerox Corporation Resilient belt sheet compiler with mixed sheet length mode
BR102015024454A2 (pt) * 2014-10-01 2016-05-24 Müller Martini Holding AG freio extrator transversal para folha de impressão
BR102015024953A2 (pt) * 2014-10-01 2016-04-12 Müller Martini Holding AG freio para folha de impressão
US10934119B2 (en) * 2018-02-28 2021-03-02 Mueller Martini Holding Ag Printing sheet brake
CN112041175B (zh) * 2018-07-23 2022-06-03 惠普发展公司，有限责任合伙企业 介质传输
CN111605764B (zh) * 2020-06-04 2021-10-29 青岛欣欣向荣智能设备有限公司 气流穿带打包机及其打包方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3081082A (en) * 1958-12-15 1963-03-12 Linotype Machinery Ltd Sheet control for printing machines
US3437335A (en) * 1967-06-16 1969-04-08 Sperry Rand Corp Fluid document transporter
US3503607A (en) * 1967-12-27 1970-03-31 Sperry Rand Corp Pneumatic document stacking device
DE2135105B1 (de) * 1971-07-14 1972-11-09 Roland Offsetmaschf Bogenauslegevorrichtung an Rotationsdruckmaschinen
DE2358206C3 (de) * 1973-11-22 1979-10-04 Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach Vorrichtung an Druckmaschinen zum Transport von Bogen
JPS5269186A (en) * 1975-12-08 1977-06-08 Hitachi Ltd Air conveyor
DE2720674A1 (de) * 1977-05-07 1978-11-09 Maschf Augsburg Nuernberg Ag Bogenauslegevorrichtung fuer eine rotations-druckmaschine
DE3113750A1 (de) * 1981-04-04 1982-10-14 Heidelberger Druckmaschinen Ag, 6900 Heidelberg "bogenausleger fuer rotationsdruckmaschinen mit an endlosen ketten umlaufenden greiferbruecken"
DD251964A1 (de) * 1986-08-04 1987-12-02 Polygraph Leipzig Bogenleiteinrichtung in auslegern von druckmaschinen
WO1988004639A1 (en) * 1986-12-22 1988-06-30 Shimizu Construction Co., Ltd. Method and apparatus for collecting waste material
DE3841909A1 (de) * 1988-04-02 1989-10-19 Hilmar Vits Verfahren und vorrichtung zum schwebenden fuehren von bogen- oder bahnfoermigem material ueber eine foerderstrecke, insbesondere eine gekruemmte foerderstrecke

Also Published As

Publication number Publication date
CA2180061A1 (en) 1997-01-28
JPH0940260A (ja) 1997-02-10
US5718176A (en) 1998-02-17
CN1144187A (zh) 1997-03-05
DE19527441A1 (de) 1997-02-06
DE19527441C2 (de) 1998-01-29
JP3676503B2 (ja) 2005-07-27
ATE212601T1 (de) 2002-02-15
EP0755887A3 (de) 1997-10-15
DE59608664D1 (de) 2002-03-14
EP0755887A2 (de) 1997-01-29

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