EP0576810B1 - Installation pour aider à transporter d'une façon controlée des exemplaires dans la plieuse de machines d'impression rotatives - Google Patents

Installation pour aider à transporter d'une façon controlée des exemplaires dans la plieuse de machines d'impression rotatives Download PDF

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Publication number
EP0576810B1
EP0576810B1 EP93107703A EP93107703A EP0576810B1 EP 0576810 B1 EP0576810 B1 EP 0576810B1 EP 93107703 A EP93107703 A EP 93107703A EP 93107703 A EP93107703 A EP 93107703A EP 0576810 B1 EP0576810 B1 EP 0576810B1
Authority
EP
European Patent Office
Prior art keywords
guiding
copy
vacuum chamber
cylinder
suction
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
EP93107703A
Other languages
German (de)
English (en)
Other versions
EP0576810A1 (fr
Inventor
Johannes Springer
Volker Wickenheisser
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
Priority claimed from DE19924217814 external-priority patent/DE4217814C2/de
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0576810A1 publication Critical patent/EP0576810A1/fr
Application granted granted Critical
Publication of EP0576810B1 publication Critical patent/EP0576810B1/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
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/54—Auxiliary folding, cutting, collecting or depositing of sheets or webs
    • B41F13/56—Folding or cutting
    • B41F13/60—Folding or cutting crosswise
    • 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
    • B65H29/241—Suction devices
    • B65H29/243—Suction rollers

Definitions

  • the invention relates to a device for supporting the controlled copy transport in the folder of rotary printing presses, in particular when reversing the transport direction of copies on copy-guiding cylinders.
  • No. 4,474,367 shows a sheet handling device with a hollow sheet transport drum which has a plurality of openings on the circumference.
  • a vacuum source is also provided to create a partial vacuum inside the drum and a drive to rotate the drum.
  • a stationary baffle plate is also associated with the outer drum surface.
  • the object of the invention is to optimize a device for supporting the controlled transport of specimens in such a way that the specimen transport always remains manageable even with processing speeds which are still to be increased.
  • Treads for conveyor belts are provided on the suction roll jacket.
  • the conveyor belts running on these running surfaces drive the suction roll jacket at the circumferential cylinder speed to eliminate speed differences. Furthermore, the specimens guided on the circumference of the suction roll shell can be taken over directly from running runs of the conveyor belts.
  • the vacuum chamber can be connected to a vacuum source that can be regulated in the volume flow in order to ensure that individual specimens are positioned correctly and securely on the circumference of the suction roll shell, depending on the substrate to be processed and the processing speeds to be driven. Furthermore, the vacuum chamber can be subdivided into at least two partial chambers by means of webs. When processing web strands with only half the width, this allows, for example, only half of the vacuum chamber to be subjected to negative pressure. If the web can be moved in the axial direction inside the vacuum chamber, the axial effective range can be adapted to different requirements.
  • the diameter of the running surfaces of the suction roll shell changes, it is possible to advance or lag the suction roll shell relative to the circumferential speed of the cylinder holding the specimen.
  • elastic rings can be mounted on the running surfaces to change the diameter of the running surfaces.
  • the setting of the lead or lag of the suction roll shell relative to the cylinder peripheral speed can be particularly important for the processing of larger specimens brought together from several web strands.
  • Figure 1 shows the side view of a suction roll axis.
  • the suction roll axis 6 contains a vacuum chamber 6c which is delimited by the dashed lines.
  • a nozzle receiving opening 5a is provided on the front side of the suction roller axis 6.
  • a receiving piece 6a is provided, with which the suction roll axis 6 is received in a holder.
  • FIG. 2 shows the front view of a suction roll axis.
  • the nozzle receiving opening 5a extends all the way to the vacuum chamber 6c.
  • FIG. 3 shows a section through the suction roll jacket and suction roll axis together with the vacuum chamber.
  • a bracket 2 is received via a screw 3.
  • a locking screw 4 is received, which engages in the thread made in the receiving piece 6a.
  • the receiving piece 6a is provided with a concave recess, which allows a suction air line to be placed on an air connection 5.
  • the air connection 5 is received in the socket opening 5a of the suction roll axis 6 and connects a vacuum source which can be regulated in the air volume flow to the vacuum chamber 6c.
  • a bearing 6b is also accommodated on the suction roller axis 6 and rotatably supports the suction roller shell 7 on the suction roller axis 6.
  • the bearing is axially secured via circlips 7c.
  • the suction roll jacket 7 is provided on its circumference both with annular treads 7b forming depressions and with annular thickenings in which the bores 7a are made.
  • thickenings and Indentations in the axial direction on the circumference of the suction roll shell 7 alternately.
  • Conveyor belts run in the depressions forming the running surfaces 7b in the circumference of the suction roll shell 7 and set the suction roller shell 7 in rotation relative to the suction roller axis 6. Since the suction roller shaft 6 and suction roller shell 7 have a very slim design, a rapid build-up of the negative pressure in the vacuum chamber 6c is ensured at the individual bores 7a of the suction roller shell 7.
  • FIG. 4 shows the installation position of the suction roll jacket on the suction roll axis with the infeed and outfeed conveyor belt runs in the gusset of two exemplarizing cylinders.
  • the bracket 2 received on the machine wall side receives the receiving piece 6a of the suction roller axis 6 via the locking screw 4.
  • Vacuum chamber 6c is subjected to negative pressure via air connection 5.
  • Conveyor belts 12, which set the suction roll casing 7 in rotation, run on the depressions shown in dashed lines on the suction roll casing 7.
  • the drive is initiated by the traction strand 12b in accordance with the cylinder circumferential speed of the cylinder 9 carrying the exemplar; the train strand 12b of the conveyor belts lies on the surface of the cylinder 9 carrying the copy and conveys the copy 13.
  • the runs running onto the suction roll jacket 7 are designated by 12a.
  • the specimen 13 which is also separated from a web strand formed from several layers, is received on the specimen-guiding cylinder 8, the folding knife cylinder, and is conveyed out of the cylinder gusset 10 in the direction of the arrow.
  • Folding knives not shown here, have pushed the specimen - for example in the center - into a folding flap of the specimen-carrying cylinder 9, also not shown.
  • the specimen 13 is withdrawn from the specimen-guiding cylinder 9, the folding jaw cylinder, against its original transport direction - indicated by the direction arrow in the specimen-guiding cylinder 8 - by the rotation of the specimen-guiding cylinder 9 in the direction of the arrow during the transfer. Fluttering or cornering of the specimen 13 is avoided by the product guide 11 above the specimen 13 to be removed.
  • the copy 13 gripped by the copy-guiding cylinder 9 on the fold back is sucked in. Since the suction roll jacket 7 rotates at the circumferential cylinder speed, speed differences are eliminated. Since the vacuum in the vacuum chamber 6c is continuously present and the specimen 13 is conveyed by the rotating suction roll jacket 7, the specimen 13 moves in full length past the vacuum chamber 6c to which vacuum is applied and is sucked in by the latter. After passage of the circumferential segment acted upon by the contour of the vacuum chamber 6c, the specimens 13 get between the surface of the specimen-guiding cylinder 9 and the surfaces of the traction strand 12b of the conveyor belts 12 facing the specimens 13.
  • Figures 5 and 5a show the drilling pattern of the suction roll shell.
  • the holes 7a made in annular thickenings on the suction roll jacket 7 have counterbores.
  • the drilling pattern shows that a staggered arrangement of the individual bores 7a in relation to one another enables a high occupancy density of the annular thickenings to be achieved. This ensures reliable suction of the specimens 13 even at high speeds.
  • FIG. 5b shows a cross section through the vacuum chamber 6c.
  • the leg of the vacuum chamber 6c extending to the left marks the beginning of the suction zone on the circumference of the suction roll shell 7 rotating on the suction roll axis 6.
  • the leg of the boundary of the vacuum chamber 6c extending to the right marks the end of the suction zone on the circumference of the suction roll axis 6 rotating suction roll shell 7. Due to the position of the limits of the vacuum chamber 6c, the suction zone can be varied over the circumference of the suction roll shell 7, whereby individual requirements can be taken into account.
  • the lower bores 7a made in the suction roll jacket 7 are in contact with the vacuum chamber 6c, while the upper bores 7a are separated from the suction air source.
  • This gap is designed in the axial delimitation area of the vacuum chamber 6c as a contactless gap seal. Sealing of the vacuum chamber 6c can thus be achieved; the leakage losses remain negligible.

Claims (5)

  1. Dispositif de guidage d'exemplaires (13) dans la plieuse de machines à imprimer rotatives, entre des cylindres (8, 9) guidant les exemplaires, les exemplaires (13) s'appliquant, pour faciliter l'inversion du sens de transport, contre un moyen de guidage (7), s'étendant sur la longueur de cylindres (8, 9) guidant les exemplaires, lequel moyen de guidage peut être entraîné par des bandes de transport (12) et est logé tournant sur un corps (6), et une dépression est produite entre l'exemplaire (13) et le moyen de guidage (7),
    caractérisé
    en ce qu'une chambre à vide (6c), tournée vers un coin de cylindre (10) entre les cylindres (8, 9) guidant les exemplaires, dans un axe de rouleau d'aspiration (6), fait agir une dépression sur le moyen de guidage (7) tournant sur l'axe de rouleau d'aspiration (6), pendant le transfert, sans vitesse relative, des exemplaires (13), de la surface du premier cylindre (8) guidant les exemplaires sur la surface du deuxième cylindre (9) guidant les exemplaires, la zone d'action de la dépression dans la direction axiale de la chambre à vide (6c) étant réglable par des cloisons.
  2. Dispositif selon la revendication 1,
    caractérisé
    en ce que la chambre à vide (6c) est reliée à une source de dépression dont le volume d'air d'aspiration peut être régulé.
  3. Dispositif selon la revendication 1,
    caractérisé
    en ce que la chambre à vide (6c) peut être partagée en au moins deux chambres partielles, par des cloisons.
  4. Dispositif selon la revendication 1,
    caractérisé
    en ce que par une variation du diamètre de surfaces de roulement (7b) de l'enveloppe des rouleaux d'aspiration (7), on peut obtenir une avance ou un retard de l'enveloppe des rouleaux d'aspiration (7) par rapport à la vitesse périphérique des cylindres (8, 9) guidant les exemplaires.
  5. Dispositif selon la revendication 4,
    caractérisé
    en ce que pour la variation du diamètre des surfaces de roulement (7b), on peut monter des anneaux élastiques sur les surfaces de roulement (7b).
EP93107703A 1992-05-29 1993-05-12 Installation pour aider à transporter d'une façon controlée des exemplaires dans la plieuse de machines d'impression rotatives Expired - Lifetime EP0576810B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4217814 1992-05-29
DE19924217814 DE4217814C2 (de) 1992-05-29 1992-05-29 Einrichtung zur Unterstützung des kontrollierten Exemplartransportes im Falzapparat von Rotationsdruckmaschinen

Publications (2)

Publication Number Publication Date
EP0576810A1 EP0576810A1 (fr) 1994-01-05
EP0576810B1 true EP0576810B1 (fr) 1996-09-18

Family

ID=6460009

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93107703A Expired - Lifetime EP0576810B1 (fr) 1992-05-29 1993-05-12 Installation pour aider à transporter d'une façon controlée des exemplaires dans la plieuse de machines d'impression rotatives

Country Status (4)

Country Link
US (1) US5411245A (fr)
EP (1) EP0576810B1 (fr)
JP (1) JP3273659B2 (fr)
DE (1) DE59303826D1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19708213A1 (de) * 1996-04-09 1997-10-30 Heidelberger Druckmasch Ag Verfahren und Vorrichtung zur Produktführung in einem Falzbildungsbereich eines Falzapparates
FR2752230B1 (fr) * 1996-08-06 1998-10-30 Heidelberg Harris Sa Dispositif de guidage de feuilles passant sur des cylindres
US5913268A (en) * 1998-02-17 1999-06-22 Xerox Corporation Pneumatic rollers and paper handling arrangements
DE19845214A1 (de) * 1998-10-01 2000-04-06 Heidelberger Druckmasch Ag Druckmaschinenzylinder, insbesondere Gegendruckzylinder für eine Bogenrotationsmaschine
DE29916083U1 (de) * 1999-09-14 1999-11-18 Roland Man Druckmasch Bogenführungseinrichtung mit einer Leitfläche in einer Druckmaschine
US6458065B1 (en) * 2000-01-11 2002-10-01 William P. Niedermeyer Transverse aid folder with cylinder mounted cutoff anvils
US6350223B1 (en) * 2000-01-11 2002-02-26 William P. Niedermeyer Rolls to fold, cut, or advance segments in folding apparatus
US6605027B1 (en) * 2000-11-16 2003-08-12 Heidelberger Druckmaschinen Ag Fold-off guide for a folder in a paper-processing machine
DE10114064A1 (de) * 2001-03-22 2002-09-26 Heidelberger Druckmasch Ag Einrichtung zur Auslage flächiger Exemplare
CA2484888C (fr) * 2003-10-16 2010-08-31 Fpna Acquisition Corporation Ensemble sous vide haut volume reglable pour un rouleau dans une machine d'entrepliage

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE649676C (de) * 1936-03-21 1937-08-31 Koenig & Bauer Schnellpressfab Bogenauslegevorrichtung
US3689061A (en) * 1970-07-02 1972-09-05 Paper Converting Machine Co System for folding napkins
US4349185A (en) * 1980-07-21 1982-09-14 Paper Converting Machine Company Folding apparatus
US4474367A (en) * 1982-03-08 1984-10-02 The Mead Corporation Sheet handling apparatus and method of sheet handling for selective removal of sheets from a vacuum drum
US4494949A (en) * 1983-01-10 1985-01-22 The Lehigh Press, Inc. Sheet folding apparatus and method
US4521209A (en) * 1983-04-22 1985-06-04 Paper Converting Machine Company Apparatus and method for transverse folding of webs
DE3427559C2 (de) * 1984-07-26 1986-08-07 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zur Übernahme und zum Weitertransport von Falzprodukten
US4666139A (en) * 1985-10-21 1987-05-19 Harris Graphics Corporation Vacuum system for combination fold-off control
DE3705195A1 (de) * 1987-02-19 1988-09-01 Frankenthal Ag Albert Leiteinrichtung
IT1213807B (it) * 1987-07-28 1990-01-05 Perini Finanziaria Spa Apparecchiatura per la produzione ed il confezionamento di tovagliolini da nastro continuo in carta od altro
DE8809285U1 (fr) * 1988-07-20 1988-09-01 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
DE3906975A1 (de) * 1989-03-04 1990-09-06 Frankenthal Ag Albert Falzapparat

Also Published As

Publication number Publication date
JPH0631898A (ja) 1994-02-08
DE59303826D1 (de) 1996-10-24
US5411245A (en) 1995-05-02
JP3273659B2 (ja) 2002-04-08
EP0576810A1 (fr) 1994-01-05

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