EP0352625B1 - Dispositif de pliage de feuilles pour machine d'impression - Google Patents

Dispositif de pliage de feuilles pour machine d'impression Download PDF

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Publication number
EP0352625B1
EP0352625B1 EP89113278A EP89113278A EP0352625B1 EP 0352625 B1 EP0352625 B1 EP 0352625B1 EP 89113278 A EP89113278 A EP 89113278A EP 89113278 A EP89113278 A EP 89113278A EP 0352625 B1 EP0352625 B1 EP 0352625B1
Authority
EP
European Patent Office
Prior art keywords
eccentric shaft
cylinder
folding
sheet
disc
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
EP89113278A
Other languages
German (de)
English (en)
Other versions
EP0352625A2 (fr
EP0352625A3 (fr
Inventor
Mario Pane
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.)
Officine Meccaniche Giovanni Cerutti SpA
Original Assignee
Officine Meccaniche Giovanni Cerutti SpA
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 Officine Meccaniche Giovanni Cerutti SpA filed Critical Officine Meccaniche Giovanni Cerutti SpA
Priority to AT89113278T priority Critical patent/ATE89512T1/de
Publication of EP0352625A2 publication Critical patent/EP0352625A2/fr
Publication of EP0352625A3 publication Critical patent/EP0352625A3/fr
Application granted granted Critical
Publication of EP0352625B1 publication Critical patent/EP0352625B1/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
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/16—Rotary folders
    • B65H45/162—Rotary folders with folding jaw cylinders
    • B65H45/163—Details of folding jaws therefor

Definitions

  • the above invention relates to a sheet folding machine for a printing press.
  • a folding process of the sheets is carried out using a plurality of pliers-like, controllable grippers.
  • the pliers consist of a fixed part of the pliers and a movable part of the pliers and are distributed over the entire axial length of the folding cylinder.
  • two flanges in the form of disks arranged side by side are provided on each side of the cylinder, which are mounted one below the other and opposite the cylinder by means of screws and continuous shafts.
  • the disc-like flanges are against each other opposite directions of rotation pivotable using an eccentric shaft.
  • This eccentric shaft is used to set the pliers gap (d). It is continuous and has offset eccentrics for the disk-like flanges.
  • the eccentric shaft protrudes from the folding cylinder via a hexagon head, which enables the eccentric shaft to be operated by hand by attaching a key.
  • Each movable pliers part is operatively connected via a ball bearing or a similar means to a cam disk which controls the opening and closing movement of the movable pliers parts relative to the fixed pliers parts during the rotational movement of the folding cylinder.
  • the structure of a folding cylinder described so far is known in printing presses.
  • the folding cylinder in order to change the pliers gap between the permanently arranged pliers parts and the movably arranged pliers parts, the folding cylinder has to be stopped, which in turn requires the entire rotary printing machine to be stopped.
  • an operator has to loosen all the clamping screws of the disk-shaped flanges on both sides of the folding cylinder, for example, seven clamping screws must be opened on each folding cylinder side with seven folding pliers provided, after which the operator must carry out the necessary adjustment work by using an appropriate one Key on the protruding hexagon head of the eccentric shaft. After carrying out the adjustment work, the operator has to tighten all the clamping screws again and only then can the rotary printing machine be put into operation again.
  • the setting process of the pliers gap is still a process that is carried out empirically. As already mentioned before, these adjustment processes have to be carried out very precisely, readjustments often have to be carried out in a fraction of a few millimeters or tenths of a millimeter. If it can be determined after restarting the rotary printing press that the setting work was not carried out satisfactorily or that the sheets are not gripped and held securely by the folding pliers after the setting process has been carried out, it will be necessary again to stop the rotary printing press in order to carry out the described setting operations again in their entirety. It can be stated that the setting processes of the folding pliers gap still represent one of the working processes for which the entire rotary printing press has to be stopped.
  • the object of the above invention is to propose an improved folding cylinder with which the disadvantages of the known folding cylinders are eliminated and in which a direct, automatic and continuous adjustment of the folding pliers gap is possible while the rotary printing press is running.
  • the object of the invention is achieved with the folding cylinder according to the invention for a printing press in that a controllable rotary drive is assigned to the drive end of the eccentric shaft provided for the setting process of the pliers gap, which allows fine adjustment in both directions of rotation of the eccentric shaft, and that the rotary drive is directly on the folding cylinder for Example on an outside disc-shaped flange of the folding cylinder is arranged. Further features of the folding cylinder according to the invention can be found in the subclaims and the description.
  • the setting process of the folding pliers gap can take place with the folding cylinder rotating, it is not necessary to stop the rotary printing press. Furthermore, the setting process takes place in real time. The time required for the setting process is only a few seconds.
  • the operator can directly and visually check the extent of the setting made, that is, the gripping process of the folding pliers can be checked directly on the sheet being driven. In the case of further fine adjustment processes, these can be carried out quickly by the operator, for example by acting on a direction reversing device, in order thereby to carry out a fine adjustment in the opposite direction and to enable safe and perfect gripping of the sheets without damaging the individual sheets.
  • the drive device is not designed to be reversible with regard to the transmission of force.
  • This non-reversible drive device can consist, for example, of a screw spindle in connection with a worm wheel, which is driven by a pneumatic motor.
  • the use of a pneumatic motor has the advantage that it takes up little space and can be mounted directly on the geared motor on the folding cylinder.
  • the use of a pneumatic motor also enables a sensitive adjustment process to be carried out.
  • Another advantage of the folding cylinder according to the invention can be seen in the fact that an automatic adjustment of the folding pliers gap is made possible by the fact that an encoder or similar position determining means is assigned to the eccentric shaft, whereby the encoder in turn can be assigned to a presetting device which acts on the controllable motor. This makes it possible to quickly and accurately set a large number of different gap widths for the folding pliers in advance by calling them up.
  • a folding cylinder which essentially and in a known manner, as shown schematically, has a cylinder body 2, which has a shaft 3, which is mounted in a frame, not shown, in the frame of a printing press.
  • the two ends of the cylinder body 2 receive a corresponding disc-shaped inner flange 4 and an outer flange 5.
  • the pliers which are arranged uniformly over the circumference of the folding cylinder 1, are identified by 6.
  • the folding pliers 6 consist of a fixed pliers part 7, which is on the inner flange 4th is arranged and from a movable pliers part 8 which is pivotally arranged at point 9 of the outer disc-shaped flanges 5.
  • the pivoting of the movable pliers part 8 takes place via a drive arm 10 and a ball bearing 11 which cooperates with a cam plate 12, as indicated schematically in FIGS. 1 and 2.
  • the eccentric shaft 13 for the adjustment process has an end 14 which enables the eccentric shaft 13 to rotate.
  • An eccentric piece 15 is mounted in the inner flange 4 and an eccentric part 16 of the eccentric shaft 13 is mounted in the outer flange 5. With 4a and 5a continuous tie rods are marked, which connect the flanges 4 and 5 cage-like.
  • a worm wheel 17 is arranged, with which a threaded spindle 18 is operatively connected, which is arranged on the output shaft 19 of a reducing drive 20.
  • a drive of the Harmony Drive (USA) type is advantageously used as the reducing drive, this drive advantageously being operatively connected to a pneumatic motor 21.
  • the line for the supply of compressed air is indicated schematically at 22. 23 with a reversing device is marked, which for the supply of compressed air in the line 24 or in the Line 25 is used to drive the motor 21.
  • the motor 21 can be driven either in one or the other direction of rotation.
  • a rotatable distributor 26 is provided on the shaft 13, which ensures the constant supply of compressed air to the lines 24 and 25 via the shaft 13, around the drive devices 21, 20 and 18, which are fixed via the part 27 on the folding cylinder 1 or are arranged on the outer flange 5 of the shaft end 14 to be supplied with compressed air.
  • the eccentric shaft 13 has at its end 30 an encoder 31 for determining the respectively assumed angular position of the eccentric shaft 13.
  • the encoder 31 or a similar device for determining the exact angular position of the eccentric shaft is operatively connected to an NC control device 35 via the connecting lines 32 and 33 and via a brush arrangement 34.
  • the operation of the improved folding cylinder is as follows: If the pliers gap (d) is to be enlarged or reduced, it is sufficient to drive the motor 21 in one or the other direction of rotation via a control switch 23. There is a corresponding rotary movement of the eccentric shaft 13, which is responsible for the adjustment process. So there can be a rotary movement of the Eccentric shaft 13 can be made in one or the other direction. This rotary movement can take place with the folding cylinder rotating and with the rotary printing press running.
  • the operator will therefore change the pliers gap by acting on the control switch 23 and by inspecting the folding process by checking the folded sheets.
  • the NC control unit 35 acts directly on the motor 21 or on the control switch 23 with the aid of the encoder 31.
  • the adjustment device described is advantageously equipped with a pneumatic motor which is equipped with a reduction gear consisting of worm wheel and threaded spindle.
  • a pneumatic motor which is equipped with a reduction gear consisting of worm wheel and threaded spindle.
  • you can too electric drives are provided for the adjustment process of the gap width, also in this case the output can take place with a gear mechanism which is in operative connection with the protruding end 14 of the eccentric shaft 13.
  • a hydraulic device for example a piston-cylinder unit with a toothed rack, which is provided on a toothed wheel which is connected to the projecting end 14 of the eccentric shaft 13.
  • the design of the eccentric shaft 13 can also be freely designed without leaving the scope of the invention.

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Inorganic Insulating Materials (AREA)

Claims (7)

  1. Dispositif de pliage de feuilles pour une machine d'impression, en prévoyant un cylindre plieur avec un arbre porteur et en prévoyant des rebords en forme de disque interne et externe qui sont disposés sur les deux côtés de tête du cylindre, un rebord en forme de disque recevant les parties de pince montées fixes et l'autre rebord en forme de disque recevant les parties de pince montées mobiles des pinces de pliage, et les rebords en forme de disque étant en liaison active avec un arbre d'excentrique continu pour l'opération de réglage, cet arbre d'excentrique présentant sur un côté une pièce de raccordement faisant saillie du rebord en forme de disque, caractérisé en ce que la pièce de raccordement en saillie (14) de l'arbre d'excentrique (13) est en liaison active pour l'opération de réglage de l'espace entre-pince (d) avec un entraînement de rotation pouvant être commandé, en ce que cet entraînement de rotation (17, 18, 19, 20, 21) en vue du réglage fin peut être entraîné dans un sens de rotation ou dans l'autre (22, 23) et est fixé au cylindre plieur (1), par exemple à un rebord externe en forme de disque (5) du cylindre (1).
  2. Dispositif de pliage de feuilles selon la revendication 1, caractérisé en ce que le dispositif d'entraînement (17, 18, 19, 20, 21) présente une roue à denture hélicoïdale (17) qui est disposée à la pièce de raccordement en saillie (14) de l'arbre d'excentrique (13), et que cette roue à denture hélicoïdale (17) est en liaison active avec une broche filetée (18) qui est activement reliée à un moteur d'entraînement (20, 21) pouvant être commandé.
  3. Dispositif de pliage de feuilles selon les revendications 1 et 2, caractérisé en ce que le moteur d'entraînement (20, 21) est un moteur pneumatique dont les conduits d'entraînement (24, 25) pour la détermination de deux sens de rotation sont en liaison active par l'arbre (3) du cylindre (1) et par un distributeur d'air comprimé pneumatique (26) associé avec un commutateur de commande (23), et que le commutateur de commande (23) est en liaison active avec une source d'air comprimé (22).
  4. Dispositif de pliage de feuilles selon la revendication 1, caractérisé en ce que le dispositif d'entraînement (17, 18, 19, 20, 21) présente un moteur électrique qui agit par l'intermédiaire d'un engrenage réducteur inséré sur un engrenage à la pièce de raccordement de l'arbre d'excentrique (13) pour l'opération de commande.
  5. Dispositif de pliage de feuilles selon la revendication 1, caractérisé en ce qu'il est prévu comme dispositif d'entraînement (17, 18, 19, 20, 21) de l'arbre d'excentrique (13) une unité hydraulique, constituée d'une unité à piston et à cylindre qui agit sur une crémaillère qui agit par une roue dentée sur la pièce de raccordement en saillie de l'arbre d'excentrique pour l'opération de réglage.
  6. Dispositif de pliage de feuilles selon la revendication 1 à 5, caractérisé en ce qu'il est prévu sur la pièce de raccordement (14) de l'arbre d'excentrique un codeur (31) ou un appareil de détermination de position similaire pour déterminer la position angulaire de l'arbre d'excentrique (13), et le codeur est relié activement à un dispositif de commande numérique (35).
  7. Dispositif de pliage de feuilles selon la revendication 1 à 6, caractérisé eu ce que le dispositif d'entraînement (17, 18, 19, 20, 21) de l'arbre d'excentrique (13) pour l'opération de réglage est réalisé de telle façon qu'un flux de puissance peut être transmis seulement dans une direction, à savoir en direction vers l'arbre d'excentrique (13).
EP89113278A 1988-07-29 1989-07-19 Dispositif de pliage de feuilles pour machine d'impression Expired - Lifetime EP0352625B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89113278T ATE89512T1 (de) 1988-07-29 1989-07-19 Bogenfalzeinrichtung fuer eine druckmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2157888 1988-07-29
IT8821578A IT1227324B (it) 1988-07-29 1988-07-29 Piegatrice perfezionata per segnature prodotte da una macchina da stampa.

Publications (3)

Publication Number Publication Date
EP0352625A2 EP0352625A2 (fr) 1990-01-31
EP0352625A3 EP0352625A3 (fr) 1991-01-16
EP0352625B1 true EP0352625B1 (fr) 1993-05-19

Family

ID=11183869

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89113278A Expired - Lifetime EP0352625B1 (fr) 1988-07-29 1989-07-19 Dispositif de pliage de feuilles pour machine d'impression

Country Status (4)

Country Link
EP (1) EP0352625B1 (fr)
AT (1) ATE89512T1 (fr)
DE (1) DE58904400D1 (fr)
IT (1) IT1227324B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006005121A1 (de) * 2006-02-04 2007-08-09 Peter Mayr Falzwerk einer Druckmaschine mit mindestens einer Steuervorrichtung für Funktionseinheiten

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3838314A1 (de) * 1988-11-11 1990-05-17 Koenig & Bauer Ag Falzklappenzylinder fuer eine rollenrotationsdruckmaschine
DE4110035C2 (de) * 1991-03-27 1995-04-13 Roland Man Druckmasch Vorrichtung zum Verstellen von Elementen in Falzwerkzylindern von Rotationsdruckmaschinen
DE4136792C2 (de) * 1991-11-08 1995-07-13 Heidelberger Druckmasch Ag Verstelleinrichtung für falzproduktführende Zylinder in Falzapparaten an Rotationsdruckmaschinen
DE4337578A1 (de) * 1993-11-04 1995-05-11 Roland Man Druckmasch Bogenführende Trommel für Druchmaschinen
DE4404752C2 (de) * 1994-02-15 1995-11-16 Roland Man Druckmasch Vorrichtung zum Verstellen der Falzklappen eines Falzklappenzylinders
DE19522903A1 (de) * 1995-06-23 1997-01-02 Roland Man Druckmasch Falzzylinder
ES2147463T3 (es) * 1996-12-21 2000-09-01 Koenig & Bauer Ag Cilindro de aletas de plegado.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1561073B2 (de) * 1967-04-18 1971-09-02 Schnellpressenfabrik Koenig & Bauer AG, 8700 Wurzburg Variabler falzapparat am rollenrotationsdruckmaschinen
DE2537920C3 (de) * 1975-08-26 1979-07-12 Maschinenfabrik Augsburg-Nuernberg Ag, 8900 Augsburg Falzzylinder
DE3028468C1 (de) * 1980-07-26 1981-12-24 Koenig & Bauer AG, 8700 Würzburg Kupplung fuer einen Falzapparatzylinder fuer veraenderliches Format
DE3217169C2 (de) * 1982-05-07 1985-08-08 Koenig & Bauer AG, 8700 Würzburg Falzmesserzylinder
DE3220414C2 (de) * 1982-05-29 1985-06-27 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Vorrichtung zum Einstellen der Falzklappe eines Klappenzylinders im Falzapparat von Rotationsdruckmaschinen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006005121A1 (de) * 2006-02-04 2007-08-09 Peter Mayr Falzwerk einer Druckmaschine mit mindestens einer Steuervorrichtung für Funktionseinheiten

Also Published As

Publication number Publication date
IT1227324B (it) 1991-04-08
DE58904400D1 (de) 1993-06-24
ATE89512T1 (de) 1993-06-15
IT8821578A0 (it) 1988-07-29
EP0352625A2 (fr) 1990-01-31
EP0352625A3 (fr) 1991-01-16

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