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EP0662439A1 - Dispositif de guidage pneumatique de feuilles - Google Patents

Dispositif de guidage pneumatique de feuilles Download PDF

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Publication number
EP0662439A1
EP0662439A1 EP94118917A EP94118917A EP0662439A1 EP 0662439 A1 EP0662439 A1 EP 0662439A1 EP 94118917 A EP94118917 A EP 94118917A EP 94118917 A EP94118917 A EP 94118917A EP 0662439 A1 EP0662439 A1 EP 0662439A1
Authority
EP
European Patent Office
Prior art keywords
sheet
guiding device
sheet guiding
pneumatic
pneumatic sheet
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
EP94118917A
Other languages
German (de)
English (en)
Other versions
EP0662439B1 (fr
Inventor
Michael Dr. Koch
Tilo Steinborn
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.)
KBA Planeta AG
Original Assignee
KBA Planeta 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 KBA Planeta AG filed Critical KBA Planeta AG
Publication of EP0662439A1 publication Critical patent/EP0662439A1/fr
Application granted granted Critical
Publication of EP0662439B1 publication Critical patent/EP0662439B1/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
    • B65H29/24—Delivering or advancing articles from machines; Advancing articles to or into piles by air blast or suction apparatus
    • B65H29/245—Air blast devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/176—Cardboard
    • 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 pneumatic sheet guiding device in sheet-fed rotary printing presses to support sheet feeding according to the preamble of the first claim.
  • document EP 0156173 shows a device on multicolor printing machines for guiding sheets printed on one or both sides between the printing units or a printing unit and the delivery.
  • This device (see Fig. 2) is designed as a box. Holes are made in the top plate of the box, from which air is blown or sucked. Fans are provided in the box to generate the excess and / or negative pressure.
  • the blow box is adapted to the respective arch path.
  • the support of the sheet conveyance by means of fan-generated air flow that enters or exits from holes is only one example. It is known, for example, to connect such a sheet guiding device centrally to an air supply device or to provide another form of incorporating the openings into the top plate.
  • the box shape is necessary because it fulfills the function of a pre-pressure container.
  • a disadvantage of these pneumatic suction or blow boxes is that they are adapted to the respective location in use. They are stable and therefore cannot be moved along the arch path - if the arch path is different. It is also not possible to give the guiding device a different shape by swiveling it into a different working position.
  • DE-OS 3113750 shows a sheet delivery for rotary printing presses, in which guide bow blowers are arranged upstream of the sheet brake to support the sheet conveyance in the ascending chain center.
  • Flexible guide bands or guide cloths are provided between the bow brake and the guide bow blower, which are articulated on the bow brake and fill the space between the bow brake and guide bow blower when the bow brake is displaced.
  • a disadvantage of these belts or cloths is that they do not work with external air, so that exact support of the sheet conveyance, including safe feeding of the sheet to the sheet brake, is not possible.
  • DE-PS 2128216 shows a guide device which has to be changed when the mode of operation is changed.
  • This document discloses a device for transferring and using sheets in printing presses for optional face or back printing, in which a sheet transfer drum together with the impression cylinder is used Show sheet turning station. Both under the impression cylinder and under the sheet transfer drum are a sheet guide plate at a short distance from the drum or cylinder circumference provided stationary, which are connected to each other via an adjustable third or middle sheet guide plate. The last-mentioned sheet guide plate can be converted into a face printing and a face and back printing position.
  • all three sheet guide plates form a closed guide which, at a short distance and tangential to the circumference of the impression cylinder, opens into an equidistant path running close to the circumference of the sheet transfer drum.
  • the middle sheet is pivoted as a coupling of a pushing loop into the gap between the printing cylinder and sheet transfer drum, so that it extends tangentially to it at a short distance from the circumference of the sheet transfer drum.
  • the sheet guide plate remains in its extended position; an adaptation to the sheet conveying path is not possible.
  • the sheet guiding device can be adjusted to any curvature along the sheet path. This allows a displacement along the arc path and a pivoting of the sheet guide device with a different curvature.
  • the upper part and the lower part are designed for their flexibility so that when the steel sheet bends as a result Adaptation to the sheet conveying path the neutral fiber - a fiber layer whose original length does not change or changes only insignificantly - lies in the top plate.
  • the flexibility of the lower part is much greater than the flexibility of the upper part.
  • the flexibility of the lower part is so great that when the guide device is acted upon by blown air, the lower part expands and a quasi air bag is formed.
  • the sheet guiding device is simple in construction and can be produced with little resources. It is easily possible to bring the sheet guiding device out of the stretched position into a curved shape and vice versa.
  • Sheet guiding devices are arranged on the sheet delivery 7.
  • a sheet guiding device is shown in the ascending part of the chain circle 1 in front of the sheet stack 4.
  • This sheet guiding device is fixedly connected to the suction roll 5 and displaceable with it via a holder 8.
  • the sheet guiding device is mounted in slide guides 9.
  • the slide guides 9 are arranged on both sides of the sheet delivery 7.
  • the sheet guiding device is connected to an air generator (not shown) via a connecting piece 10..
  • Another sheet guide device is provided below the lower deflection wheel 3.1, which is arranged downstream of the printing cylinder 12.
  • the position when processing paper is shown as a full line.
  • the position when processing material with higher stiffness (cardboard) is shown in dashed lines. (only partially drawn in)
  • the sheet guiding device is connected to a working cylinder 14 via an angle lever 13.
  • the sheet guiding device is pivoted into the two positions by means of the working cylinder 14 and positioned in the respective position. In the position for paper processing, the sheet guiding device is located near the sheet conveying path; the sheet guide device is folded down for cardboard processing.
  • Fig. 2 shows the sheet guiding device under a reversing drum 15 of a sheet-fed rotary printing press which can be converted from straight printing to perfecting and vice versa.
  • the upstream and downstream printing cylinders 18, 19 are also shown.
  • the sheet guiding device In the straight printing position, the sheet guiding device is adapted to the sheet path (full line). The sheet guiding device is folded down in the perfecting position. In this extended position, it fills the space between a first and a second fixed guide element 16, 17.
  • FIG. 3 shows the detailed structure of the pneumatic sheet guiding device in a partially perspective illustration as a detail marked with X in FIG. 1.
  • the sheet guiding device consists of an upper part 20, which is designed as a nozzle plate 20, is flexible (bendable) and consists, for example, of sheet steel. Openings 21 are incorporated into the upper part, which are formed as a bead in the exemplary embodiment. However, any other shape, such as bores and any other arrangement of the openings 21, is also conceivable.
  • the upper plate 20 is firmly connected to a lower part 22 at the edge surfaces, which consists of an equally flexible material, for example rubber. However, it is also conceivable to use a film or textile material as the lower part.
  • the upper part 20 and lower part 22 are connected by means of rivets 23, which are arranged by holding plates 24.
  • the holding plates 24 act against the lower part 22.
  • the connection of the upper and lower parts 20, 22 at the edge surfaces must be so, regardless of how the connection is made, that no air can escape between the upper and lower parts 20, 22.
  • the upper and lower parts 20, 22 are designed such that the lower part 22 is considerably more flexible than the upper part 20.
  • the sheet guiding device If the sheet guiding device is not required, or in the idle state of the sheet-fed rotary printing press, if no air is supplied via the connecting piece 10 ⁇ , the lower part 22 lies against the upper part 20 ⁇ .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
EP94118917A 1993-12-23 1994-12-01 Dispositif de guidage pneumatique de feuilles Expired - Lifetime EP0662439B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4344040 1993-12-23
DE4344040A DE4344040C1 (de) 1993-12-23 1993-12-23 Pneumatische Bogenleiteinrichtung

Publications (2)

Publication Number Publication Date
EP0662439A1 true EP0662439A1 (fr) 1995-07-12
EP0662439B1 EP0662439B1 (fr) 1997-03-19

Family

ID=6505905

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94118917A Expired - Lifetime EP0662439B1 (fr) 1993-12-23 1994-12-01 Dispositif de guidage pneumatique de feuilles

Country Status (2)

Country Link
EP (1) EP0662439B1 (fr)
DE (2) DE4344040C1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19739893A1 (de) * 1997-09-11 1999-03-18 Koenig & Bauer Ag Bogenleiteinrichtung in Auslegern von Druckmaschinen
EP0941956A1 (fr) * 1998-03-13 1999-09-15 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif de guidage souple de produits transportés
GB2340827A (en) * 1998-08-27 2000-03-01 Roland Man Druckmasch Pneumatic sheet guiding unit in a printing press.

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0755888B1 (fr) * 1995-07-27 1999-12-29 Heidelberger Druckmaschinen Aktiengesellschaft Méthode et dispositif pour freiner les feuilles dans le dispositif de sortie d'une machine rotative d'impression pour feuilles
DE19631598C2 (de) * 1996-08-05 2000-02-17 Roland Man Druckmasch Pneumatische Bogenführungsvorrichtung in einer Druckmaschine
DE19952205C1 (de) * 1999-10-29 2000-12-14 Roland Man Druckmasch Umstellbare Bogenführungseinrichtung in einer Druckmaschine
DE102007003884A1 (de) * 2007-01-26 2008-07-31 Koenig & Bauer Aktiengesellschaft Einrichtung zur Entnahme von Probe- und Makulaturbogen in Auslagen von Druckmaschinen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3113750A1 (de) * 1981-04-04 1982-10-14 Heidelberger Druckmaschinen Ag, 6900 Heidelberg "bogenausleger fuer rotationsdruckmaschinen mit an endlosen ketten umlaufenden greiferbruecken"
EP0156173A2 (fr) * 1984-03-24 1985-10-02 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Dispositif de guidage de feuilles imprimées sur une et sur deux faces

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2128216C3 (de) * 1970-07-20 1976-09-30 Polygraph Leipzig Vorrichtung zur Bogenuebergabe und -wendung in Druckmaschinen fuer wahlweisen Schoen- oder Schoen- und Widerdruck

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3113750A1 (de) * 1981-04-04 1982-10-14 Heidelberger Druckmaschinen Ag, 6900 Heidelberg "bogenausleger fuer rotationsdruckmaschinen mit an endlosen ketten umlaufenden greiferbruecken"
EP0156173A2 (fr) * 1984-03-24 1985-10-02 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Dispositif de guidage de feuilles imprimées sur une et sur deux faces

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19739893A1 (de) * 1997-09-11 1999-03-18 Koenig & Bauer Ag Bogenleiteinrichtung in Auslegern von Druckmaschinen
DE19739893C2 (de) * 1997-09-11 2002-04-11 Koenig & Bauer Ag Einrichtung zum Leiten und Zuführen von Bogen zu einer Saugwalze in Auslegern von Druckmaschinen
EP0941956A1 (fr) * 1998-03-13 1999-09-15 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif de guidage souple de produits transportés
US6145649A (en) * 1998-03-13 2000-11-14 Heidelberger Druckmaschinen Ag Device for flexible guiding of conveyed products
GB2340827A (en) * 1998-08-27 2000-03-01 Roland Man Druckmasch Pneumatic sheet guiding unit in a printing press.
GB2340827B (en) * 1998-08-27 2000-10-11 Roland Man Druckmasch Pneumatic sheet guiding unit in a printing press

Also Published As

Publication number Publication date
DE4344040C1 (de) 1995-03-23
DE59402145D1 (de) 1997-04-24
EP0662439B1 (fr) 1997-03-19

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