EP0395864A2 - Dispositif pour l'élimination de la poussière dans des plieuses de machines d'imprimerie - Google Patents

Dispositif pour l'élimination de la poussière dans des plieuses de machines d'imprimerie Download PDF

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Publication number
EP0395864A2
EP0395864A2 EP90105015A EP90105015A EP0395864A2 EP 0395864 A2 EP0395864 A2 EP 0395864A2 EP 90105015 A EP90105015 A EP 90105015A EP 90105015 A EP90105015 A EP 90105015A EP 0395864 A2 EP0395864 A2 EP 0395864A2
Authority
EP
European Patent Office
Prior art keywords
paper
turning bar
paper web
suction
area
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
EP90105015A
Other languages
German (de)
English (en)
Other versions
EP0395864B1 (fr
EP0395864A3 (fr
Inventor
Hermann c/o Fa. Eltex-Elektrostatik-GmbH Künzig
Günther c/o Fa. Eltex-Elektrostatik-GmbH Thoma
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.)
Eltex Elektrostatik GmbH
Original Assignee
Eltex Elektrostatik GmbH
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 Eltex Elektrostatik GmbH filed Critical Eltex Elektrostatik GmbH
Publication of EP0395864A2 publication Critical patent/EP0395864A2/fr
Publication of EP0395864A3 publication Critical patent/EP0395864A3/fr
Application granted granted Critical
Publication of EP0395864B1 publication Critical patent/EP0395864B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/002—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing cleaning devices for sheets or webs

Definitions

  • the present invention relates to a device for dedusting turning bars in folders for printing presses.
  • Folders such as those used for printing presses, have turning bars on which the direction of movement of the continuous paper webs is reversed.
  • the vented turning bars reject and sediment the cutting dust carried along the cutting edges by the blowing air of the turning bar and the centripetal acceleration. This accumulated paper dust affects the functioning of the entire folding apparatus, which previously required mechanical cleaning of the apparatus at certain intervals.
  • the object of the present invention is to provide a generic device according to the preamble of the main claim, by which mechanical cleaning is not necessary.
  • the object underlying the invention is achieved in a device according to the preamble of the main claim by its characterizing features.
  • the turning bar is surrounded by several suction chambers in a semicircular cross section.
  • the suction chambers can also be arranged in pairs covering the two side edges of the paper web. Finally, if there is a large amount of dust, it is also possible to arrange the suction chambers over the entire width of the continuous paper web.
  • a high DC voltage is applied to the discharge electrodes arranged at the paper inlet and at the paper outlet, the turning bar preferably being able to be grounded or insulated with respect to this DC voltage by means of a specific discharge resistance.
  • the low dust accumulation also reduces the risk of explosion from dust.
  • the suction chambers Due to the arrangement of the suction chambers, which is semicircular in cross section, the dust particles that are thrown off tangentially during the rotation around the turning bar are suctioned off.
  • the suction effect can be further improved if the turning bar is rigid and hollow and, at least in the area of the wrap angle of the paper web, has a perforation which is supplied with compressed gas or compressed air via the interior of the hollow turning bar, which is then sucked off through the suction chambers.
  • the effect is achieved that an air cushion is generated on the turning bar, over which the paper web moving over the turning bar "floats".
  • the circulation of the paper web around the turning bar is improved because it exerts a suction effect on the paper web and the air cushion reduces the frictional forces.
  • the high air flow that forms at the edges of the paper web favors the suction effect during dedusting.
  • the space between the paper inlet and the paper outlet is also designed as a suction chamber.
  • the suction chambers surrounding the turning bar in cross section in a semicircular arrangement, which are connected to a suction device, for example a pump, are delimited on their sides facing the paper web or turning bar by a plurality of roller-shaped delimiting elements which are arranged at such distances from one another that there is sufficient space between them for the dust particles to pass through.
  • Roller-shaped delimitation elements have proven to be particularly effective for this purpose, since they offer few points of attack for the deposition of the dust particles to be extracted.
  • the suction chamber located in the space between the paper inlet and the paper outlet can also be at least partially delimited by roller-shaped delimiting elements on its side pointing towards the turning bar.
  • the figure shows the dedusting device in a vertical section through the longitudinal axis of the turning bar and perpendicular to the plane of the incoming and outgoing paper web.
  • a plurality of suction chambers 3 are arranged one behind the other in the paper running direction, which surround the turning bar in a semicircular arrangement in cross section.
  • the suction chambers 3 are delimited towards the turning bar by roller-shaped limiting elements 18, which are arranged at such intervals that there is a space between them for the passage of the dust particles to be extracted as well as the compressed air or compressed gases.
  • Each suction chamber 3 is delimited by side walls 20 and by a rear wall 22, a connection piece 24 being provided within the rear wall 22 for connection to a vacuum device, for example a vacuum pump. Through these connecting pieces 24, the radially flung dust particles 2 entering the suction chambers 3 between the roller-shaped delimitation elements 18 and the gases are extracted.
  • a further suction chamber 3p is provided, which is delimited on the side facing away from the turning bar 8 by a suction nozzle 28 and by roller-shaped limiting elements 18.
  • this suction chamber Through this suction chamber, the particles 4 between the webs and the substitute due to turbulence stored particles 5 suctioned off.
  • a discharge electrode 6, to which a high DC voltage is applied, is arranged at the paper inlet 12 in the area in front of the first suction chamber 3a.
  • a discharge electrode 6 is arranged in the area after the last suction chamber 3n opposite the turning bar 8, to which a high DC voltage is likewise applied.
  • the turning bar is grounded via a bleeder resistor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
EP90105015A 1989-04-29 1990-03-16 Dispositif pour l'élimination de la poussière dans des plieuses de machines d'imprimerie Expired - Lifetime EP0395864B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3914310A DE3914310A1 (de) 1989-04-29 1989-04-29 Vorrichtung zum abfuehren des staubes in falzapparaten fuer druckmaschinen
DE3914310 1989-04-29

Publications (3)

Publication Number Publication Date
EP0395864A2 true EP0395864A2 (fr) 1990-11-07
EP0395864A3 EP0395864A3 (fr) 1991-10-30
EP0395864B1 EP0395864B1 (fr) 1995-01-04

Family

ID=6379819

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90105015A Expired - Lifetime EP0395864B1 (fr) 1989-04-29 1990-03-16 Dispositif pour l'élimination de la poussière dans des plieuses de machines d'imprimerie

Country Status (5)

Country Link
US (1) US5027462A (fr)
EP (1) EP0395864B1 (fr)
JP (1) JPH0367654A (fr)
AT (1) ATE116598T1 (fr)
DE (2) DE3914310A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4305955C1 (de) * 1993-02-26 1994-07-21 Koenig & Bauer Ag Profilleiste zum Führen einer Rollenkette

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4120973A1 (de) * 1991-06-25 1993-01-07 Eltex Elektrostatik Gmbh Vorrichtung zum abfuehren von staub
US5412836A (en) * 1993-10-06 1995-05-09 Gerber Garment Technology, Inc. Cloth cutter bed slat cleaner with vacuum removal feature
EP1125646B1 (fr) 2000-02-01 2003-08-06 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif pour enlever des particules de bandes
DE10004305A1 (de) * 2000-02-01 2001-08-02 Heidelberger Druckmasch Ag Verfahren und Vorrichtung zur Entfernung von Partikeln von Materialbahnen
DE10018010C2 (de) * 2000-04-11 2003-10-16 Eltex Elektrostatik Gmbh Vorrichtung zum Entstauben swie deren Verwendung
JP4723074B2 (ja) * 2000-11-02 2011-07-13 日置電機株式会社 消臭装置
US6673003B2 (en) * 2001-05-09 2004-01-06 The Procter & Gamble Company Vacuum cleaning folding rail
DE10128823C2 (de) * 2001-06-15 2003-05-08 Koenig & Bauer Ag Vorrichtungen zum Wenden einer Bahn
DE10164724B4 (de) * 2001-06-15 2004-04-08 Koenig & Bauer Ag Vorrichtung zum Wenden einer Bahn
US6708919B2 (en) 2002-03-19 2004-03-23 Kimberly-Clark Worldwide, Inc. Turning bar assembly for use with a moving web
WO2010042123A1 (fr) * 2008-10-10 2010-04-15 Hewlett-Packard Development Company, L.P. Rouleau libre à air à nettoyage automatique
CN101920860B (zh) * 2010-04-10 2012-02-15 佛山市宝索机械制造有限公司 无需助卷板的无芯纸卷复卷机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5983661A (ja) * 1982-11-02 1984-05-15 Mitsubishi Heavy Ind Ltd 紙粉除去装置
JPS6135250A (ja) * 1984-07-05 1986-02-19 Hoomen Kogyo Kk 廻転する丸ブラシとエア−噴射ノズルを内蔵する紙面集塵装置
EP0245526A1 (fr) * 1986-04-29 1987-11-19 Eltex-Elektrostatik Gesellschaft mbH Sonde pour le dépoussiérage de pistes en mouvement, en particulier pour des pistes en papier

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2082411A (en) * 1935-08-20 1937-06-01 Carle J Merrill Paper cleaning device
US2818595A (en) * 1953-09-11 1958-01-07 Oxy Dry Sprayer Corp Apparatus for cleaning paper for printing
US3420710A (en) * 1964-09-03 1969-01-07 Du Pont Process and apparatus for cleaning webs utilizing a sonic air blast
US3434639A (en) * 1966-01-07 1969-03-25 Perkin Elmer Corp Transports for elongated material
US4026701A (en) * 1975-02-24 1977-05-31 Xerox Corporation Gas impingement and suction cleaning apparatus
US4454621A (en) * 1982-01-15 1984-06-19 Static Inc. Sheet and web cleaner
DE3436870C1 (de) * 1984-10-08 1986-05-15 U.E. Sebald Druck und Verlag GmbH, 8500 Nürnberg Luftumspülte Wendestange für Rotationsdruckmaschinen
DE3512308A1 (de) * 1985-04-04 1986-10-16 Albert-Frankenthal Ag, 6710 Frankenthal Falzapparat
US4824002A (en) * 1986-06-06 1989-04-25 Ford John W Contactless web support guide

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5983661A (ja) * 1982-11-02 1984-05-15 Mitsubishi Heavy Ind Ltd 紙粉除去装置
JPS6135250A (ja) * 1984-07-05 1986-02-19 Hoomen Kogyo Kk 廻転する丸ブラシとエア−噴射ノズルを内蔵する紙面集塵装置
EP0245526A1 (fr) * 1986-04-29 1987-11-19 Eltex-Elektrostatik Gesellschaft mbH Sonde pour le dépoussiérage de pistes en mouvement, en particulier pour des pistes en papier

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PAPIER+KUNSTSTOFF+VERARBEITER no. 9, 1975, Seite 58 "Saubere Materialoberfl{chen" *
PATENT ABSTRACTS OF JAPAN vol. 10, no. 191 (M-495)(2247) 4 Juli 1986, & JP-A-61 035250 (HOOMEN KOGYO K.K.) 19 Februar 1986, *
PATENT ABSTRACTS OF JAPAN vol. 8, no. 195 (M-323)(1632) 7 September 1984, & JP-A-59 083661 (MITSUBISHI JUKOGYO K.K.) 15 Mai 1984, *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4305955C1 (de) * 1993-02-26 1994-07-21 Koenig & Bauer Ag Profilleiste zum Führen einer Rollenkette
US5396982A (en) * 1993-02-26 1995-03-14 Koenig & Bauer Aktiengesellschaft Profiled guide rail

Also Published As

Publication number Publication date
ATE116598T1 (de) 1995-01-15
EP0395864B1 (fr) 1995-01-04
DE3914310A1 (de) 1990-10-31
EP0395864A3 (fr) 1991-10-30
DE59008166D1 (de) 1995-02-16
US5027462A (en) 1991-07-02
DE3914310C2 (fr) 1993-03-04
JPH0367654A (ja) 1991-03-22

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