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EP1201428B1 - Dispositif de guidage de feuilles dans des machines d'impression pour assister au transport des feuilles - Google Patents

Dispositif de guidage de feuilles dans des machines d'impression pour assister au transport des feuilles Download PDF

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Publication number
EP1201428B1
EP1201428B1 EP20010125107 EP01125107A EP1201428B1 EP 1201428 B1 EP1201428 B1 EP 1201428B1 EP 20010125107 EP20010125107 EP 20010125107 EP 01125107 A EP01125107 A EP 01125107A EP 1201428 B1 EP1201428 B1 EP 1201428B1
Authority
EP
European Patent Office
Prior art keywords
sheet
printing
guide
guide device
cylinder
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
EP20010125107
Other languages
German (de)
English (en)
Other versions
EP1201428A3 (fr
EP1201428A2 (fr
Inventor
Michael Koch
Matthias Reinecker
Günter Weisbach
Michael Beyer
Andreas Leuschke
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer 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
Priority claimed from DE2000153106 external-priority patent/DE10053106A1/de
Priority claimed from DE2000153104 external-priority patent/DE10053104A1/de
Priority claimed from DE2000153105 external-priority patent/DE10053105A1/de
Application filed by Koenig and Bauer AG filed Critical Koenig and Bauer AG
Priority to EP08164150A priority Critical patent/EP1995064B1/fr
Publication of EP1201428A2 publication Critical patent/EP1201428A2/fr
Publication of EP1201428A3 publication Critical patent/EP1201428A3/fr
Application granted granted Critical
Publication of EP1201428B1 publication Critical patent/EP1201428B1/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
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F25/00—Devices for pressing sheets or webs against cylinders, e.g. for smoothing purposes

Definitions

  • the invention relates to a sheet guiding device in printing presses for supporting sheet guiding.
  • Sheet guiding devices in printing machines have the task of acting on the sheet to be conveyed by the printing press in such a way that they can be moved through the printing press in a smear-free and wrinkle-free manner and deposited on the delivery pile.
  • Sheet guiding devices which are assigned to a printing cylinder, ensure that the sheet rests smoothly on the printing cylinder. It is generally known to use as sheet guiding devices blow boxes with pneumatic devices that hang up the sheet on the surface of the cylinder with their pressure force.
  • a disadvantage of this device are the complex nozzle design and the missing radiant component outside the minimum format width.
  • From the DE 197 53 089 C2 is a sheet guiding device in a printing press known, arranged in the conveying direction of the printing material in the zwickelförmigen space in front of a printing blanket formed by blanket / cylinder and impression cylinder axially parallel to the cylinders and coupled to a pneumatic system and from several chambers with openings for the Blas Kunststoffaustritt for placing the printing on the associated lateral surface consists and in the conveying direction a to the pressure gap tapering inlet gap having.
  • the chambers have rising in the conveying direction of the printing material, acting on the substrate printing energies (P 1 > P 2 > P 3 ) on.
  • a disadvantage of this sheet guiding device which is designed as a box with individual chambers, is the complex box design and the energy loss through the pressure reduction via throttling.
  • Such a sheet guiding device is known from the DE-OS 21 56 577 known.
  • guide rollers are arranged in series and axially parallel over the width of the cylinder over a printing cylinder. By means of the guide rollers, the rigid material is to be forced into a predetermined path to prevent contact with machine parts.
  • a disadvantage of this sheet guiding device is that such an arrangement of the rollers brings them into contact with the printed sheet. This can lead to a greasing of the paint. This facility only works if there are continuous, pressure-free corridors in the print motif.
  • a disadvantage of this device is that it performs a good leadership and leadership function for rigid materials, for the support of the sheet guide in processing of paper, however, is only partially suitable.
  • the sheet guiding device has the advantage that a sheet conveyed by the printing cylinder can be smoothly spread over the entire surface and placed on the lateral surface, so that it can be printed correctly in the printing nip and also properly conveyed by the printing cylinder.
  • the sheet is acted upon by the nozzles in the guide surface with blowing air; the blown air forces the bow to hang up on the pressure cylinder.
  • the guide gap Due to the increasing in the sheet conveying direction density of the nozzles in the guide surface or by the increasing in the conveying direction and from outside to inside nozzle density the guide gap is fed more continuously in the sheet conveying direction more compressed air, which then from the inside outwards and against the sheet conveying direction - additionally supported by a in Sheet conveying direction and axially to the machine center (transverse to the sheet conveying direction) converging gap - flows in the direction of the side edges and the trailing edge.
  • An increasing nozzle density in the guide surface is understood to mean that in the sheet conveying direction or according to a second variant in and across the sheet conveying direction from outside to inside, the proportion of the nozzle surface on the entire guide surface increases. This is achieved by a larger number of nozzles in the guide surface and / or larger nozzle openings.
  • the air box is simple in construction, since it consists of only a single chamber.
  • the nozzle design is simple by the flow from the inside to the outside over the increase of the nozzle density in the sheet conveying direction and formation of the guide gap.
  • the sheet guiding device is used in processing the entire range of materials from rigid to non-rigid materials.
  • the Bogenkantenleit is effective only when processing rigid materials.
  • the edge guide rollers are otherwise outside the format range.
  • the sheet After the sheet has passed the edge guide roller, it is transferred to the sheet guiding device.
  • the sheet guide through the guide surface of the air box is carried out by sliding along the sheet trailing edge on the guide surface, whereby a smearing of the sheet is avoided because the sheet touches the guide surface only with its trailing edge.
  • Fig. 1 shows a schematic representation in side view of two printing units 1 of a printing press.
  • a sheet guiding cylinder 5 is arranged between the two printing cylinders 2, 3, 4. Between the two printing cylinders 2, a sheet guiding cylinder 5 is arranged.
  • the blanket cylinder 3 is designed as a paint form cylinder 3.
  • a sheet guiding device 6 is arranged, which will be explained below with reference to the sheet guiding device 6 before the printing nip 7.
  • the sheet guiding device 6 after the printing nip 7 is arranged in mirror image or approximately mirror image to the sheet guiding device 6 in front of the printing nip 7.
  • the sheet conveying direction 8 results from the direction of rotation of the cylinder 2,5, which is indicated by the direction of rotation arrow.
  • Sheet guiding and impression cylinder 5.2 have the common tangent point t 2.5 .
  • Fig. 2 shows the sheet guiding device 6 in detail.
  • the sheet guiding device 6 is formed as an air box 9 extending over the sheet conveying path. It extends in the area above the tangent point t 2.5 from the sheet guiding cylinder 5 to near the printing nip 7 of printing and blanket cylinder 2;
  • the air box 9 is pivotally mounted on the machine frame 15. Lead to the air box 9 pneumatic air supply systems 16, which are formed in the embodiment as fans 16.
  • a guide surface 11 which converges near the pressure gap 7 with a contour of the blanket cylinder 3 adapted blocking surface 10 of the air box 9 at the beginning of the air box 9, where in the air box 9 in the direction of pressure gap 7 facing outlet opening 13th is introduced.
  • the adaptation of the blocking surface 10 to the contour of the blanket cylinder 3 is advantageous, but not a condition for the construction of a barrier pad.
  • the guide surface 11 forms with the lateral surface of the printing cylinder 2, the guide gap 17.
  • the guide gap 17 may converge to the impression cylinder 2 or diverge or run parallel.
  • the blocking surface 10 of the air box 9 has the outer surface of the blanket cylinder 3 at a distance S.
  • the length L of the blocking surface 10 is greater than the distance S.
  • Fig. 3 shows a view towards B according to Fig. 2 on the guide surface 11.
  • the guide surface 11 is provided over the entire surface with nozzles 12 which blow vertically from the guide surface 11.
  • the nozzle density in the sheet conveying direction 8 (FIG. Fig. 3 ) or according to another variant in Bogen allergycardi and from outside to inside ( Fig. 4 ).
  • Fig. 5 shows a view of the air box 9 in the direction A according to another variant Fig. 2 , It can be seen that the guide surface 11 from the outside (on both sides) inwardly to the surface of the printing cylinder 2 has a converging distance. For simplicity, the nozzles 12 in the guide plate in Fig. 5 not shown.
  • the operation of the sheet guiding device 6 is the following:
  • the air box 9 fulfills the function of a pressure accumulator.
  • the air emerging from the nozzles 12 forms an air cushion and thus acts on the sheet guided under the guide surface 11 and forces it onto the printing cylinder 2.
  • Fig. 6 and Fig. 7 show the sheet guiding device for rigid substrates in more detail.
  • the Bogenkantenleit driving 22 consists of a rotatably mounted on a holder 18 Kantenleitrolle 19th
  • the edge guide roller 19 is assigned to the pressure cylinder 2 and thus the side edge of the sheet 21 above the holder 18 at an angle.
  • the holder 18 is fixedly mounted on a guide 20 and slidable along it (see also Fig. 8 ).
  • the arrangement of the sheet guiding device and its function in processing of rigid materials shows Fig. 6 ,
  • the edge guide roller 19 is associated with the side edge of the sheet 21 and the air box 9 is pivoted on the machine frame 15, that between the guide surface 11 and the periphery of the impression cylinder 2 is preferably a divergent gap.
  • the rigid materials (bows) 21 conveyed by the printing machine first come into contact with the edge-guiding rollers 19 arranged on both sides in the region of the sheet guiding device in their rear region.
  • the edge guide rollers 19 support the side edge of the sheet 21, so that the sheet trailing edge is guided over the entire width at a distance below the guide surface 11.
  • the trailing edge of the sheet 21 After the sheet 21 has left the effective range of the edge guide rollers 19, it moves due to its bending stress to the outside and lies down with the trailing edge of the guide surface 11 on. After the trailing edge of the sheet 21 has passed the end of the guide surface 11, the trailing edge of the common tangent follows between impression cylinder 2 and blanket cylinder 3.
  • the air box 9 can be pressurized pneumatically.
  • the air emerging from the nozzles 12 of the guide surface 11 acts on the sheet 21 in the direction of the impression cylinder 2.
  • the edge guide roller 19 is placed outside of the sheet format to be processed.
  • the air box 9 is previously applied pneumatically by the fans 16.
  • the air box 9 has previously been pivoted to the machine frame 15 in such a way that a convergent gap is created between the guide surface 11 and the periphery of the printing cylinder 2 in the sheet conveying direction 19.
  • the air emerging from the nozzles 12 acts on the sheet 21 and forces it onto the printing cylinder 2.
  • the sheet 21 is thereby streaked and runs wrinkle-free and without greasing into the printing gap 7 of printing press. and blanket cylinders 2, 3. A contact of the sheet 21 with the guide surface 11 does not take place
  • the sheet guiding device 6 can also be used when the printing unit 1 is used as a coating unit or is not involved in the printing. If it is not involved in the pressure, have rubber and printing cylinder 2.3 in the printing gap 7 at a distance from each other.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Claims (10)

  1. Installation de guidage de feuilles dans des machines d'impression pour assister le guidage des feuilles dans la zone de l'intervalle d'impression (7) de deux cylindres (2, 3), installation composée d'un caisson d'air (9) s'étendant sur la largeur du chemin de transfert des feuilles et reliée à un système d'alimentation en air (16),
    le caisson d'air (9) composé d'une chambre ayant une surface de guidage (11) tournée vers le chemin de transfert de feuilles, cette surface étant munie de buses (12),
    installation caractérisée en ce que
    la densité des buses (12) de la surface de guidage (11) augmente de manière continue dans le sens de transfert des feuilles (8).
  2. Installation de guidage de feuilles selon la revendication 1,
    caractérisée en ce que
    la densité des buses (12) de la surface de guidage (11) augmente de l'extérieur vers l'intérieur.
  3. Installation de guidage de feuilles selon la revendication 1,
    caractérisée en ce que
    le caisson d'air (9) s'étend du cylindre de guidage de feuilles (5) en amont du cylindre d'impression (2) jusqu'à proximité de l'intervalle d'impression (7).
  4. Installation de guidage de feuilles selon la revendication 1 ou 2,
    caractérisée en ce que
    les buses (12) occupent toute la surface de guidage (11).
  5. Installation de guidage de feuilles selon la revendication 1 ou 2,
    caractérisée en ce que
    le sens de l'écoulement dans l'intervalle de guidage (17) se fait de l'intérieur vers l'extérieur et dans le sens opposé à la direction de transfert de feuilles (8).
  6. Installation de guidage de feuilles selon la revendication 1 ou 2,
    caractérisée en ce que
    la surface de guidage (11) converge axialement vers la direction de transfert de feuilles (8) de l'extérieur vers l'intérieur vers la surface supérieure du cylindre d'impression.
  7. Installation de guidage de feuilles selon la revendication 1 ou 2,
    caractérisée en ce que
    dans la direction de transfert des feuilles, la surface de guidage (11) forme avec la surface enveloppe du cylindre d'impression (2), un intervalle (17) convergent ou divergent ou parallèle.
  8. Installation de guidage de feuilles selon l'une des revendications 1, 2 ou 4,
    caractérisée en ce que
    les buses (12) débouchent perpendiculairement à la surface de guidage (11).
  9. Installation de guidage de feuilles selon la revendication 1 ou 2,
    caractérisée par
    une combinaison d'une installation de guidage de bord de feuille (22) qui peut être branchée sélectivement, avec des galets de guidage de bord (19) réglables suivant l'arête latérale de la feuille (21).
  10. Installation de guidage de feuilles selon la revendication 9,
    caractérisée en ce que
    le caisson d'air (9) est monté pivotant sur le bâti (15) de la machine.
EP20010125107 2000-10-26 2001-10-23 Dispositif de guidage de feuilles dans des machines d'impression pour assister au transport des feuilles Expired - Lifetime EP1201428B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08164150A EP1995064B1 (fr) 2000-10-26 2001-10-23 Dispositif de guidage de feuilles dans des machines d'impression pour assister au transport des feuilles

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE2000153106 DE10053106A1 (de) 2000-10-26 2000-10-26 Bogenglätteinrichtung in Druckmaschinen zur Unterstützung der Bogenführung
DE10053105 2000-10-26
DE2000153104 DE10053104A1 (de) 2000-10-26 2000-10-26 Bogenglätteinrichtung in Druckmaschinen zur Unterstützung der Bogenführung
DE10053104 2000-10-26
DE10053106 2000-10-26
DE2000153105 DE10053105A1 (de) 2000-10-26 2000-10-26 Leiteinrichtung in Druckmaschinen

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP08164150A Division EP1995064B1 (fr) 2000-10-26 2001-10-23 Dispositif de guidage de feuilles dans des machines d'impression pour assister au transport des feuilles
EP08164150.8 Division-Into 2008-09-11

Publications (3)

Publication Number Publication Date
EP1201428A2 EP1201428A2 (fr) 2002-05-02
EP1201428A3 EP1201428A3 (fr) 2007-04-18
EP1201428B1 true EP1201428B1 (fr) 2011-03-23

Family

ID=27214131

Family Applications (2)

Application Number Title Priority Date Filing Date
EP20010125107 Expired - Lifetime EP1201428B1 (fr) 2000-10-26 2001-10-23 Dispositif de guidage de feuilles dans des machines d'impression pour assister au transport des feuilles
EP08164150A Expired - Lifetime EP1995064B1 (fr) 2000-10-26 2001-10-23 Dispositif de guidage de feuilles dans des machines d'impression pour assister au transport des feuilles

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP08164150A Expired - Lifetime EP1995064B1 (fr) 2000-10-26 2001-10-23 Dispositif de guidage de feuilles dans des machines d'impression pour assister au transport des feuilles

Country Status (2)

Country Link
EP (2) EP1201428B1 (fr)
DE (1) DE50115825D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013209699B4 (de) 2012-05-24 2020-08-27 Koenig & Bauer Ag Bogenführungseinrichtung für eine bogenverarbeitende Maschine
CN108537949B (zh) * 2018-04-15 2024-08-02 浙江师范大学 全自动双面展平纸币整理机
JP3224349U (ja) * 2018-10-29 2019-12-12 ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフトＨｅｉｄｅｌｂｅｒｇｅｒ Ｄｒｕｃｋｍａｓｃｈｉｎｅｎ ＡＧ 印刷ニップの手前にブロー装置を有する印刷機

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2156577B2 (de) * 1971-11-15 1974-07-04 Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach Vorgreiferschwinganlage
DE2603483B2 (de) * 1976-01-30 1978-06-08 Reinhard Mohn Ohg, 4830 Guetersloh Verfahren zum Führen eines Bogens zum gleichzeitigen Bedrucken mit einem Schön- und Widerdruck sowie Vorrichtung zur Durchführung des Verfahrens
GB2190364A (en) * 1986-05-14 1987-11-18 Wallace Knight Ltd An assembly for preventing the detachment of a substrate from a revolving cylinder
EP0553321B2 (fr) * 1991-08-16 1999-08-18 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif pour la regulation et/ou la commande de differents elements margeurs au voisinage du receveur de feuilles d'une machine a imprimer
DE9115032U1 (de) * 1991-12-04 1992-01-16 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Bogenausleger an Druckmaschinen
DE4443493C2 (de) * 1994-12-07 2002-06-06 Koenig & Bauer Ag Leiteinrichtung für biegesteife Materialien
DE19549845B4 (de) 1995-06-24 2007-07-12 Heidelberger Druckmaschinen Ag Vorrichtung zur Erzielung einer einwandfreien Auflage eines Bedruckstoffes in einer Druckmaschine
DE19723146C2 (de) * 1997-06-03 1999-11-18 Koenig & Bauer Ag Bogenweiche zur Unterstützung der Bogenführung
DE29721185U1 (de) * 1997-11-29 1998-01-15 MAN Roland Druckmaschinen AG, 63075 Offenbach Bogenführungseinrichtung in einer Druckmaschine
DE19753089C2 (de) * 1997-11-29 2000-06-29 Roland Man Druckmasch Bogenführungseinrichtung in einer Druckmaschine

Also Published As

Publication number Publication date
EP1995064B1 (fr) 2012-12-12
DE50115825D1 (de) 2011-05-05
EP1201428A3 (fr) 2007-04-18
EP1201428A2 (fr) 2002-05-02
EP1995064A1 (fr) 2008-11-26

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