EP0291721B1 - Machine à imprimer des feuilles en deux couleurs sur une face ou à retiration - Google Patents

Machine à imprimer des feuilles en deux couleurs sur une face ou à retiration Download PDF

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Publication number
EP0291721B1
EP0291721B1 EP88106461A EP88106461A EP0291721B1 EP 0291721 B1 EP0291721 B1 EP 0291721B1 EP 88106461 A EP88106461 A EP 88106461A EP 88106461 A EP88106461 A EP 88106461A EP 0291721 B1 EP0291721 B1 EP 0291721B1
Authority
EP
European Patent Office
Prior art keywords
sheet
transfer cylinder
fed rotary
printing machine
machine according
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
EP88106461A
Other languages
German (de)
English (en)
Other versions
EP0291721A3 (en
EP0291721A2 (fr
Inventor
Arno Wirz
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 EP0291721A2 publication Critical patent/EP0291721A2/fr
Publication of EP0291721A3 publication Critical patent/EP0291721A3/de
Application granted granted Critical
Publication of EP0291721B1 publication Critical patent/EP0291721B1/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
    • B41F21/10—Combinations of transfer drums and grippers
    • B41F21/106—Combinations of transfer drums and grippers for reversing sheets, e.g. for perfecting machine

Definitions

  • the invention relates to a sheet-fed rotary printing press according to the preamble of the main claim.
  • a sheet-fed rotary printing press of the type in question is known from Japanese publication Sho 52-29 643, in which a storage drum located beneath it is assigned to the sheet transfer cylinder located between the two printing cylinders.
  • the sheet transfer cylinder contains grippers to grasp the trailing edge of the sheet. Before these grippers close, the sheet trailing edge is bent by about 90 degrees using a sheet guide plate on the storage drum side.
  • a sheet-fed rotary printing machine is not suitable for printing on cardboard.
  • the storage drum lying outside the normal sheet guide largely prevents the creation of a sheet-fed rotary printing press in a row design. Then it is not possible to smooth the sheet before taking over the following grippers, which favors inaccurate printing.
  • the object of the invention is based on the object of designing a generic sheet-fed rotary printing press in such a way that a safe sheet turning is possible while achieving a low overall height of the machine, even with thick cardboard.
  • a major advantage of the solution according to the invention is that a low overall height of the machine can be achieved by the sheet support arranged downstream of the sheet transfer cylinder.
  • the sheet support fits into the overall design of the sheet-fed rotary printing press in a space-saving manner and is inexpensive to accommodate in a row construction concept. If the sheet is to be printed on the back after passing through the first printing unit, the leading edge of the sheet passes from the sheet transfer cylinder to the upper side of the support and is pushed onto the sheet support as the grippers holding the trailing edge approach the sheet. When the sheet transfer cylinder is rotated further, the sheet travels ahead with its grasped sheet trailing edge, accompanied by a turning of the sheet. This sheet turning can be done safely and precisely, combined with good printing results.
  • This sheet-fed rotary printing machine is also suitable for processing cardboard.
  • high throughput speeds can be achieved while the sheet-fed rotary printing press is highly economical.
  • a particularly good transfer of the sheet leading edge to the sheet support or pushing the corresponding sheet start onto it is achieved by arranging the sheet support in the gusset between the sheet transfer cylinder and the printing cylinder downstream of the same.
  • the space available there is used to accommodate this sheet support. Due to the fact that the peripheral surface of the sheet transfer cylinder overlaps the facing end of the sheet support to a certain extent, an additional sheet displacement component occurs and leads to an acceleration with regard to the sheet displacement onto the sheet support.
  • a kinking of the trailing edge of the sheet is reliably avoided during the turning process in that the corresponding grippers of the sheet transfer cylinder, after passing through the opposite face to the sheet transfer cylinder end of the sheet support, from their position in the direction of rotation of the sheet transfer cylinder facing the gripper jaw into the position of the gripper jaw opposite to the sheet transfer cylinder direction of rotation. Therefore, the gripper mouth always runs in the direction of the sheet plane and precludes a kinking of the rear edge of the bow combined with a secure transfer of the rear sheet edge to the grippers of the subsequent printing cylinder.
  • the application of the leading edge of the sheet to the sheet support is favored in that it is designed as a circumferential band.
  • the direction of rotation of the belt preferably corresponds to the peripheral speed of the sheet transfer cylinder.
  • the speed of the belt is also adapted to the peripheral speed of the sheet transfer cylinder.
  • the detection of the trailing edge of the sheet by the sheet support is optimized by the upper side of the support, which is slightly arched in the direction of the printing cylinder.
  • An advantageous way of securely grasping the trailing edge of the sheet is that the gripper of the sheet transfer cylinder designed as a gripper gripper swings with its one gripper leg from an open position sunk into the sheet transfer cylinder by approximately 180 degrees into the opposite closed position to the trailing edge of the sheet. This resulting gripper mouth can then perform the above-described pivoting movement during the turning process, in order to avoid kinking of the trailing edge of the sheet.
  • the suction nozzles arranged in front of the mouth of the gripper of the sheet transfer cylinder ensure that the gripper moving into the closed position can always reliably grasp the trailing edge of the sheet. If the suction nozzles are still pivotable in the circumferential direction of the sheet transfer cylinder, even the trailing edge of the sheet can be turned towards them tes gripper mouth of the gripper. After the trailing edge of the sheet has been sucked in, the suction nozzles initially pivot in the circumferential direction of the sheet transfer cylinder and thus cause the loop to be slightly looped on the leading edge by the additional grippers. Then the suction nozzles swivel back and push the trailing edge of the sheet into the open mouth of the gripper in conjunction with smoothing the sheet.
  • the sheet trailing edge is thus optimally fixed for the subsequent turning process.
  • An improved adhesion between the sheet support and the sheet is achieved by a friction lining assigned to the sheet support.
  • a friction lining assigned to the sheet support.
  • a suction nozzle can also be assigned to the sheet support belt.
  • chain gripper systems it is also possible to assign chain gripper systems to the belt. However, it is always ensured that the leading edge of the sheet is optimally transported through the sheet support.
  • the sheet-fed rotary printing press illustrated schematically in FIG. 1 has a plurality of printing units 1, 2 and 3 arranged in series in a row.
  • Each printing unit contains a printing cylinder 4,5,6, a rubber cylinder 7,8,9 and a plate cylinder 10,11,12.
  • the inking units assigned to the plate cylinders are not shown.
  • the sheets 13 to be printed are fed in a known manner to the printing cylinder 4 of the first printing unit 1 through a feed drum 14 located on the machine input side.
  • a sheet transfer cylinder 15 is arranged between the printing cylinders 4 and 5 of the two first printing units 1, 2.
  • Another sheet transfer cylinder 16 extends between the printing cylinders 5 and 6.
  • the axes of rotation 17, 18 of the sheet transfer cylinders 15/16 lie below the axes 19, 20, 21 of the printing cylinders. Otherwise, the diameter of the sheet transfer cylinder 15, 16 is three times that of the blanket cylinder 7, 8, 9.
  • Two rows of clamping grippers 22 are provided for holding the sheets 13 on the printing cylinder 4 of the first printing unit 1 in a diametrically opposed position on the printing cylinder 4.
  • the sheet transfer cylinder 15 adjoining the first printing cylinder 4 is equipped with three pliers-like grippers 23 arranged in the same angular distribution. In the sheet transfer cylinder direction of rotation, these pliers grippers 23 are adjacent to suction nozzles 24 which are pivotably mounted in the circumferential direction of the sheet transfer cylinder 15. The latter are seated on three segments S which are adjustably arranged in the circumferential direction of the sheet transfer cylinder 15 and which lie in recesses in the sheet transfer cylinder and whose back ends with the periphery of the sheet transfer cylinder.
  • the sheet transfer cylinder 15 in the vicinity of the pliers grippers then has three rows of additional grippers 25 arranged in the same circumferential distribution.
  • a sheet support 26 is arranged downstream of the sheet transfer cylinder 15.
  • the latter has a substantially flat-shaped and approximately tangential to the sheet transfer cylinder 15 support top 27.
  • the arrangement of the sheet support 26 lying in a horizontal plane is such that it is provided in the gusset Z between the sheet transfer cylinder 15 and the printing cylinder 5 following it below it.
  • the peripheral surface of the sheet transfer cylinder 15 projects beyond the end 28 of the sheet support 26 on the side of the sheet transfer cylinder and accordingly also forms a gusset 29 there.
  • the sheet support 26 is designed as a circumferential band 30.
  • Two end pulleys 31, 32 are used to guide the same. One or both of them can be driven so that the belt 30 transports in the conveying direction x, which direction corresponds to the direction of rotation y of the sheet transfer cylinder 15.
  • the transport speed of the belt 30 corresponds to the peripheral speed of the sheet transfer cylinder 15.
  • the support formed by the belt 30 Top 27 is curved in the direction of the pressure cylinder 5.
  • additional rollers which are not illustrated, can be provided. In cardboard processing combined with a certain stiffness of the sheet, only a corresponding guide plate would suffice as a sheet support.
  • suction nozzles 33 assigned to the sheet support band 30 are illustrated with arrows. However, it is also possible to provide the sheet support band 30 with a corresponding friction lining.
  • the contact point 34 between the first impression cylinder 4 and the sheet transfer cylinder 15 is followed by a blow air nozzle 35 designed in the form of an arcuate section. This blowing air nozzle is used when the sheets 13 are made of paper.
  • the downstream printing cylinder 5 is also equipped with two rows of clamping grippers 36 arranged in diametrically opposed positions.
  • the sheet-fed rotary printing press is set to face and back printing.
  • the sheet 13 transferred from the feed drum 14 to the impression cylinder 4 is gripped on the sheet leading edge 13 'by a series of clamping grippers 22 and receives the first pressure on its front side after a corresponding passage.
  • the leading edge 13 'of the sheet reaches the area of a row of the additional grippers 25 of the transfer cylinder 15, which come into the clamping position towards the leading edge 13' of the sheet.
  • the sheet 13 is taken along by it in the direction of rotation y of the sheet transfer cylinder 15.
  • the trailing edge 13 ′′ is taken along by pivoting the suction nozzles 24 in the direction of rotation of the sheet transfer cylinder y.
  • the bow forms 13 by upsetting a loop 40, due to the fact that the sheet leading edge 13 'is held by the additional grippers 25.
  • the dot-dash position according to FIG. 5 is reached, in which the gripper mouth 38 points in the direction of rotation y of the sheet transfer cylinder 15.
  • the forceps gripper 23 then, after passing through the opposing face to the facing sheet support end 28, executes a turning movement in such a way that its gripper jaw 38 rotates the sheet transfer cylinder Direction y is directed in the opposite direction, see illustration with full lines in Fig. 5.
  • the bow 13 is turned.
  • the trailing edge of the sheet 13 ′′ is not subject to any kinking or bending during this process. From FIG. 5 it can then still be seen that an overlap of the sheet transfer cylinder end 28 from the peripheral surface of the sheet transfer cylinder 15 results in an additional displacement path a which accelerates the sheet the sheet support 26 leads.
  • the sheet rear edge 13 ′′ of the sheet 13 reaches the area of the corresponding clamping grippers 36 of the second printing cylinder 5, which clamping grippers take over the sheet rear edge 13 ′′ from the pliers grippers 23.
  • This process can be seen from FIGS. 2 and 3. Since the trailing edge of the sheet 13 "is not damaged or kinked, this can always be carried out without problems, so that the sheet 13 between the blanket cylinder 8 and the impression cylinder 5 receives the pressure on its rear side.
  • the pliers gripper is designated by the number 41. It has the inner gripper leg 42 and the outer gripper leg 43. The latter is found before passing the contact point 34 between the first printing cylinder 4 and the sheet transfer cylinder 15 in an open position sunk into the sheet transfer cylinder 15. The trailing edge of the sheet 13 "is sucked in and held by the suction nozzles 44. The suction nozzles then pivot against the direction of rotation of the sheet transfer cylinder from the position shown in full lines by a small angle of rotation into the dot-dash position while tensioning and smoothing the sheet.
  • the pliers grippers 41 are also such that they perform a pivoting movement, as in the embodiment described above, such that the pliers jaw 45 is always in the plane of the Arc 13 when turning the same.
  • the surface of the sheet transfer cylinder 15 is rough and chrome-plated.
  • the other sheet transfer cylinder 16 can be designed to be equivalent. If necessary, this can also interact with a corresponding sheet support.

Landscapes

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

Claims (11)

1. Presse à imprimer rotative à feuilles destinée à la production d'une impression polychrome sur une face ou d'une impression recto-verso, comprenant un cylindre de transfert de feuilles interposé entre les cylindres d'impression des deux groupes imprimants dans le sens du défilement de la feuille, et des systèmes de pinces associés à tous les cylindres, caractérisée par un dispositif (26) d'appui de la feuille disposé en aval du cylindre de transfert de feuilles (15), qui comprend une surface supérieure (27) de dispositif d'appui de forme sensiblement plate, disposée à peu près tangentiellement au cylindre de transfert de feuilles (15) et parallèlement à la direction du défilement des feuilles, sur laquelle le cylindre de transfert de feuilles (15) pousse la feuille (13) pendant que ses pinces (23 ou 41) qui tiennent le bord arrière (13") de la feuille s'en rapprochent avec le bord avant libre (13") de la feuille dirigé vers l'avant, et d'où la feuille (13) est soulevée par le cylindre de transfert de feuilles (15), avec son bord arrière (13") dirigé vers l'avant, considéré dans le sens de rotation du cylindre de transfert de feuilles (15).
2. Presse à imprimer rotative à feuilles selon la revendication 1, caractérisée en ce que le dispositif (26) d'appui de la feuille est disposé dans la fente en coin (Z) entre le cylindre de transfert de feuilles (15) et le cylindre d'impression (15) placé en aval de ce dernier, et au-dessous de ce cylindre d'impression.
3. Presse à imprimer rotative à feuilles selon une ou plusieurs des revendications précédentes, caractérisée en ce que la surface circonférentielle du cylindre de transfert de feuilles (15) surplombe l'extrémité (28) du dispositif (26) d'appui de la feuille qui est dirigée vers le cylindre de transfert de feuilles.
4. Presse à imprimer rotative à feuilles selon une ou plusieurs des revendications précédentes, caractérisée en ce qu'après le franchissement de la position face rapport à l'extrémité (28) du dispositif d'appui de la feuille dirigée vers le cylindre de transfert de feuilles, les pinces (23, 41) basculent de la position dans laquelle leur bouche (38 ou 45) est dirigée dans le sens de la rotation (y) du cylindre de transfert de feuilles (15), à une position dans laquelle leur bouche est dirigée en sens inverse de la rotation (y) du cylindre de transfert de feuilles.
5. Presse à imprimer rotative à feuilles selon une ou plusieurs des revendications précédentes, caractérisée en ce que le dispositif (26) d'appui de la feuille est constitué par une courroie (30) circulante sans fin.
6. Presse à imprimer rotative à feuilles selon une ou plusieurs des revendications précédentes, caractérisée en ce que la face supérieure (27) du dispositif d'appui est légèrement bombée vers le cylindre d'impression (5).
7. Presse à imprimer rotative à feuilles selon une ou plusieurs des revendications précédentes, caractérisée en ce que la pince du cylindre de transfert de feuilles (15) constituée par une pince tenaille (41), possède une branche (43) qui bascule d'environ 180°, à pour passer d'une position d'ouverture escamotée dans le cylindre de transfert de feuilles (15) à la position de fermeture dirigée dans le sens opposé vers le bord arrière (13") de la feuille.
8. Presse à imprimer rotative à feuilles selon une ou plusieurs des revendications précédentes, caractérisée par des ventouses (24 ou 44) disposées en avant de la bouche (38, 45) de la pince (23 ou 41), pour la fixation intermédiaire du bord arrière (13") de la feuille.
9. Presse à imprimer rotative à feuilles selon une ou plusieurs des revendications précédentes, caractérisée en ce que les ventouses (24) sont montées pivotantes pour pivoter dans la direction circonférentielle du cylindre de transfert de feuilles (15) et poussent le bord arrière (13") de la feuille (13) qui est tenue à son bord avant (13') par des pinces supplémentaires (25), pour les engager dans la bouche (38) de la pince, en sens inverse du sens de rotation (y) du cylindre de transfert de feuilles (15).
10. Presse à imprimer rotative à feuilles selon une ou plusieurs des revendications précédentes, caractérisée en ce que la courroie (30) du dispositif d'appui de la feuille porte un revêtement de friction.
11. Presse à imprimer rotative à feuilles selon une ou plusieurs des revendications précédentes, caractérisée en ce que des ventouses (33) sont associées à la courroie (30) du dispositif d'appui de la feuille.
EP88106461A 1987-05-21 1988-04-22 Machine à imprimer des feuilles en deux couleurs sur une face ou à retiration Expired - Lifetime EP0291721B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873717093 DE3717093A1 (de) 1987-05-21 1987-05-21 Bogen-rotationsdruckmaschine zur herstellung von einseitigem mehrfarbendruck oder schoen- und widerdruck
DE3717093 1987-05-21

Publications (3)

Publication Number Publication Date
EP0291721A2 EP0291721A2 (fr) 1988-11-23
EP0291721A3 EP0291721A3 (en) 1990-04-11
EP0291721B1 true EP0291721B1 (fr) 1992-07-01

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ID=6328072

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88106461A Expired - Lifetime EP0291721B1 (fr) 1987-05-21 1988-04-22 Machine à imprimer des feuilles en deux couleurs sur une face ou à retiration

Country Status (4)

Country Link
US (1) US4930414A (fr)
EP (1) EP0291721B1 (fr)
JP (1) JPS6477542A (fr)
DE (1) DE3717093A1 (fr)

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DE9416106U1 (de) * 1994-10-06 1994-11-24 Heidelberger Druckmaschinen Ag, 69115 Heidelberg Bogenleitblech für eine Wendeeinrichtung
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DE19635389B4 (de) * 1996-08-31 2006-06-29 Koenig & Bauer Ag Vorrichtung zum Wenden von Bogen in einer Druckmaschine
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DE10011436A1 (de) * 1999-05-27 2000-11-30 Heidelberger Druckmasch Ag Vorrichtung zum Halten eines Bogens auf einem an der Wendung beteiligten Zylinder einer Bogen verarbeitenden Maschine
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DE19949412A1 (de) * 1999-10-13 2001-04-19 Heidelberger Druckmasch Ag Einrichtung zum Wenden von Bogen in einer Bogenrotationsdruckmaschine
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DE10152875B4 (de) * 2000-11-21 2014-08-07 Heidelberger Druckmaschinen Ag Wendeeinrichtung mit Speicher für flächiges Material
DE10158467B4 (de) * 2000-12-21 2014-05-15 Heidelberger Druckmaschinen Ag Druckmaschine und Verfahren zum Bedrucken eines Bogens
DE10102080B4 (de) * 2001-01-18 2014-03-06 Heidelberger Druckmaschinen Ag Einrichtung zur Wendung flächiger Exemplare in einer bogenverarbeitenden Rotationsdruckmaschine
US6739252B2 (en) * 2001-07-30 2004-05-25 Heidelberger Druckmaschinen Ag Method and apparatus for reversing sheet material in sheet-processing machines
GB0129369D0 (en) * 2001-12-07 2002-01-30 Filtrona United Kingdom Ltd Method and apparatus for marking articles
DE10310690A1 (de) * 2002-04-12 2003-10-30 Heidelberger Druckmasch Ag Bogenführungseinrichtung in einer bogenverarbeitenden Maschine
DE10358171A1 (de) * 2003-12-12 2005-07-07 Heidelberger Druckmaschinen Ag Vorrichtung zum Fördern eines Bogens durch eine drucktechnische Maschine
JP4092302B2 (ja) * 2004-04-01 2008-05-28 ソニーケミカル＆インフォメーションデバイス株式会社 サクション装置
DE102004021643A1 (de) 2004-05-03 2005-12-01 Man Roland Druckmaschinen Ag Applikationsverfahren für eine Bestandteile eines elektronischen Schaltkreises innerhalb einer Druckmaschine
CN100526073C (zh) * 2004-08-30 2009-08-12 海德堡印刷机械股份公司 用于输送页张通过印刷机械的装置
CN1944048A (zh) * 2005-09-21 2007-04-11 海德堡印刷机械股份公司 用于输送页张的方法和用于执行该方法的装置
DE102007049643C5 (de) * 2006-11-06 2019-04-04 Heidelberger Druckmaschinen Ag Verfahren und Vorrichtung zum Wenden eines Bogens während des Förderns durch eine Druckmaschine
DE102006059024A1 (de) 2006-12-14 2008-06-19 Carl Zeiss Smt Ag Projektionsbelichtungsanlage für die Mikrolithographie, Beleuchtungsoptik für eine derartige Projektionsbelichtungsanlage, Verfahren zum Betrieb einer derartigen Projektionsbelichtungsanlage, Verfahren zur Herstellung eines mikrostrukturierten Bauteils sowie durch das Verfahren hergestelltes mikrostrukturiertes Bauteil
DE102015209691C5 (de) * 2014-06-18 2024-03-14 Koenig & Bauer Ag Wendevorrichtung

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Also Published As

Publication number Publication date
EP0291721A3 (en) 1990-04-11
US4930414A (en) 1990-06-05
EP0291721A2 (fr) 1988-11-23
JPS6477542A (en) 1989-03-23
DE3717093C2 (fr) 1989-12-28
DE3717093A1 (de) 1988-12-08

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