EP1894872B1 - Falzmaschine mit einziehbarem Nocken zum Umschalten des Betriebsmodus - Google Patents

Falzmaschine mit einziehbarem Nocken zum Umschalten des Betriebsmodus Download PDF

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Publication number
EP1894872B1
EP1894872B1 EP07291042A EP07291042A EP1894872B1 EP 1894872 B1 EP1894872 B1 EP 1894872B1 EP 07291042 A EP07291042 A EP 07291042A EP 07291042 A EP07291042 A EP 07291042A EP 1894872 B1 EP1894872 B1 EP 1894872B1
Authority
EP
European Patent Office
Prior art keywords
cam
folding machine
mask
cams
folding
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.)
Not-in-force
Application number
EP07291042A
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English (en)
French (fr)
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EP1894872A1 (de
Inventor
Cyrille Belleculee
Michel Griffon
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.)
Goss International France SAS
Original Assignee
Goss Systemes Graphiques Nantes SAS
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.)
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Publication of EP1894872A1 publication Critical patent/EP1894872A1/de
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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
    • B65H45/168—Rotary folders with folding jaw cylinders having changeable mode of operation

Definitions

  • the invention applies in particular to the folding of paper strips printed by offset presses.
  • the holding devices consist of pins that engage in the edges of the cut sheets.
  • the folding cylinder In jaw folders, the folding cylinder cooperates with a jaw cylinder to ensure the folding of the sheets. Specifically, the leaves are pushed by the engaging blades ("tucking blades" in English) between the jaws of the jaw cylinder to ensure the folding of the leaves. In the bending machines on the fly, the jaw cylinder is replaced by two fluted rollers.
  • These folders can operate in dual production mode ("straight” in English) and accumulation mode ("collect” in English).
  • double production mode each sheet is cut, held on the folding cylinder and then individually folded by cooperation of an engaging blade with either the jaw cylinder or the fluted rollers, depending on the category of the folder.
  • the pimples holding the leaf are simultaneously released from the sheet to allow the folded sheet to be evacuated in the form of a notebook.
  • Displacement of the pins and engaging blades is provided via the control cams on which cam followers, in the form of rollers connected to the engaging blades and pins, roll.
  • control cams for example have recesses in which each roller can penetrate to cause the withdrawal of the corresponding pins, and thus release the sheet, or to cause the projection of the corresponding engaging blade, to produce a fold in the sheet.
  • a first cut sheet is held on the folding cylinder to be covered by a second cut sheet.
  • the accumulation mode therefore makes it possible to produce notebooks with a larger number of pages.
  • two mask cams are arranged laterally adjacent to the control cams of the pins and the engaging blades. These cams masks have projections to the right of the recesses of the control cams.
  • the shafts carrying the rollers for rolling on the control cams also carry other rollers for rolling on the masking cams.
  • these other rollers roll over the protrusions of the masking cams and prevent the rollers associated with the control cams from entering the corresponding recesses.
  • the mask cams thus neutralize zones of the control cams and avoid, in a controlled manner, the movement of the pins and the engaging blades.
  • the mask cams rotate around the axis of the folding cylinder at a speed generally equal to 2.5 times that of the folding cylinder, when the folding cylinder is equipped with five holding devices and five engaging blades. .
  • the speed of the mask cam is 1.5 times that of the folding cylinder.
  • the mask cams To switch from accumulation mode to dual production mode, the mask cams must be disengaged and locked in one position angular in which they do not interfere with the control cams. Reverse operations are required to return to accumulation mode.
  • the change of mode therefore requires precise angular positioning, in particular to immobilize the cams or masks, and to ensure their re-engagement. This is restrictive and also strongly limits the possibilities of automating the change of folding mode,
  • the document WO-2005/102889 discloses a folder in which the passage of the master cams from an active position to an inactive position is by means of a cam follower disc rotating at a speed different from that of the cylinder.
  • An object of the invention is to solve this problem by providing a bender of the aforementioned type that allows to simply switch from accumulation mode to dual production mode.
  • the subject of the invention is a folder of the aforementioned type as defined in the characterizing part of claim 1.
  • the folder may comprise one or more of the features defined in the dependent claims.
  • FIG 1 schematically illustrates a folder 1 on the fly, it being understood that the invention will be described later with reference to Figures 3 to 7 can be applied to folding folders, jaw folders or any other type of folder.
  • the folder 1 is used to cut and fold a strip 2, printed for example by an offset printing press, in order to create notebooks.
  • the folder 1 comprises a folding cylinder 3, a cutting cylinder 4 shown in dotted lines and two corrugated rollers 5.
  • the folder is a 3/2 folder and therefore comprises three series of pins 6, 7 and 8 and three engaging blades 9, 10 and 11.
  • Series 6, 7 and 8 of pins and engaging blades 9, 10 and 11 are movably mounted on the folding cylinder 3 under the action of rollers which are rolled on unrepresented control cams. More generally, these rollers may be called cam followers. These rollers are carried by the folding cylinder 3 and rotated by the latter.
  • the roller associated with the series of pins 8 has penetrated into a recess of the corresponding control cam, causing the retraction of the series of pins 8 which allows the rollers 5 to evacuate the sheet 12.
  • the sheet 12 is then provided with a fold transverse to the direction of scrolling and forms a notebook comprising a single sheet.
  • Parts B to D of the figure 1 illustrate how the folder 1 will continue to cut and subsequently fold sheets 13, 14 and 15 from the web 2, the folding roll 3 continuing to turn clockwise on the web. figure 1 .
  • the figure 2 illustrates the accumulation folding mode with again parts A to D representing successive steps.
  • a sheet 16 cut from the strip 2 is held on the folding cylinder 3 and is not folded as it passes by 5. This is ensured by temporarily neutralizing the reliefs corresponding control cams series of pins and engaging blades, through one or more cams masks.
  • the folding cylinder 3 also carries another sheet 17 which has been previously cut in the strip 2 and which is held on the cylinder 3 by the series of pins 6.
  • a sheet 18 is cut and wound on the sheet 17 and, when the engaging blade 9 is facing the rollers 5, the latter and the series of pins 6 are actuated to release the sheets 17 and 18 and push them between the rollers 5 to form a notebook of two sheets provided with a transverse fold.
  • Parts C and D of the figure 2 illustrate the subsequent cutting of two other sheets 19 and 20.
  • the accumulation folding mode therefore makes it possible to produce notebooks with a larger number of pages.
  • the figure 3 schematically illustrates an end 21 of the folding cylinder 3 which is received via a bearing 22 in one of the side walls 24 of the frame of the folder 3.
  • the wall 24 shown is for example that located on the service side.
  • the other side wall of the frame located on the transmission side, is provided with means for ensuring a rotational drive of the rolls and rolls of the folder, and in particular of the folding roll 3 about its axis A.
  • this cam 26 is arranged around the end 21 of the cylinder 3 and is fixed on the wall 24.
  • this cam 28 is also attached to the side wall 24.
  • cam followers 30 and 34 symmetrical of those shown have not been represented on the upper part of the figure 3 .
  • a recess 37 is distinguished from the control cam 28 in which the cam follower 30 can not penetrate due to the cam follower 34 pressing on the mask cam 36. This is typically the phenomenon that occurs when operation in accumulation as described later.
  • each other cam follower of the control cam 26 and each cam follower of the control cam 28 are associated with another cam follower intended to cooperate with the mask cam 36.
  • these latter cam followers are located in different planes of the figure 3 and are therefore not visible in this figure.
  • All cam followers are carried by the folding cylinder 3 and thus accompany it in its rotations about its axis A.
  • the mask cam 36 has a shape and an arrangement of its elements substantially symmetrical with respect to the axis A.
  • Its hub 38 is arranged around the end 21 of the cylinder 3 and, thanks to the bearings 46, can rotate freely relative thereto.
  • a gear train 48 is carried by the wall 24 to drive the mask cam 36 in rotation about the axis A, from the end 21 of the cylinder 3, at a rotational speed which is, for example, 1.25 the cylinder 3, if the cylinder 3 is equipped with five engaging blades and five holding devices. If the folding cylinder 3 is equipped with three engaging blades and three holding devices, the speed of the mask cam 36 is 0.75 times that of the folding cylinder 3.
  • the half cam 40 has a generally circular shape and has a radially outer surface 50 intended to come into contact with the cam followers 34.
  • a first end 52 of the half-cam 40 is articulated on the hub 38 at a point 53.
  • the other end 54 of the half-cam 40 is connected to the end 52 of the other cam half 40 by a spring 42 and the hub 48 by a toggle mechanism 44.
  • the half-cam 40 is movable radially by pivoting relative to the hub 38 between two positions.
  • a first position is illustrated by the figure 4 . This is an extracted position. In this position, the surface 50 is located radially on the outside as illustrated by the outer circle C2 in phantom.
  • the two springs 42 are in relaxed positions and the toggle mechanisms 44 are in misaligned positions and the ends 54 of the half-cams are farther from the axis A.
  • the folder 1 can then operate in accumulation mode as will be described later.
  • the figure 5 illustrates the second position, that is to say, the retracted position.
  • the surface 50 is located radially further inward as materialized by the inner circle C2.
  • the springs 42 are then in compressed positions and the corresponding ends 54 of the half-cams 40 are therefore closer to the axis A.
  • the toggle mechanisms 44 are still in misaligned positions but in positions other than those they occupy on the figure 4 .
  • the toggle mechanisms 44 are then in the end positions.
  • the figure 5 corresponds to a mode of operation of the bender 1 in double production.
  • the toggle mechanisms 44 pass through aligned positions, in which their intermediate joints 56 and their joints 58 connecting the half-cams 40 and the hub 38 are aligned.
  • FIGS. 6 and 7 illustrate the configuration change control system of the mask cam 36.
  • the direction of rotation of the mask cam 36 is shown schematically by the arrow F.
  • This system 60 comprises a switch 62 which can be actuated via a jack 64 and possibly a arm 66.
  • the jack 64 is a pneumatic cylinder with double effect.
  • the switch 62 is for example constituted by a rail delimited by two lateral edges 67 and which converges from a wide inlet 68 to a narrow outlet 70.
  • the switch 62 can pivot at a point 71 with respect to the wall 24 between a first position ( figure 6 ), in which the output 70 is close to the axis A, and a second position ( figure 7 ), in which the outlet 70 is spaced from the axis A.
  • the switch 62 is intended to cooperate, as will be described later with members, for example rollers 72, carried by the intermediate hinges 56 of the toggle mechanisms 44.
  • the mask cam 36 is in the configuration illustrated by the figure 5 and the switch 62 in the position illustrated by the figure 6 .
  • the outer surfaces 50 of the half-cams 40 are therefore radially recessed and do not interfere with the reliefs of the control cams 26 and 28.
  • the followers 34 of the mask cam 36 do not come into contact with each other. the latter and the movements of the series of pins 6 to 8 and the engaging blades 9 to 11 are only controlled by the cam followers associated with the cams 26 and 28 which roll over them.
  • the jack 64 causes switch 69 to move to the position away from the figure 7 .
  • the first roller 72 to penetrate, because of the rotation of the cam 36, in the switch 62 between progressively in contact with the inner edge 67, which causes the progressive radial separation of the roller 72 to the path materialized by the circle C4.
  • the corresponding toggle mechanism 44 passes, under the combined action of the springs 42 which push the half cams 40 to their positions of the figure 4 , in aligned position then in the misaligned position of the figure 4 .
  • the mask cam 36 is then in the configuration of the figure 4 .
  • the radially outer edges 50 of the half-cams 40 are then situated radially more outward than the bottoms of the recesses of the control cam 26 and the recesses 37 of the control cam 28.
  • cam followers 34 rolling on the outer surfaces 50 will prevent the followers of the cams 26 and 28 from entering these recesses.
  • the mask cam 36 therefore interferes with the control cams 26 and 28 in order to achieve the accumulation operation described with reference to FIG. figure 2 .
  • the cam 36 therefore has a simple and reliable operation and is economical.
  • rollers 34 do not come into contact with the mask cam 36, which therefore limits the wear of these different elements.
  • the mask cam 36 forms a mechanically bistable assembly, it is not likely to be affected by a power failure or a total loss of pressure in the supply circuit.
  • the kinetic energy associated with the rotation of the cam 36 is thus divided by four, which proves particularly interesting for high speed production bending machines.
  • the same mask cam is used both to interfere with the control cams 26 and 28, which saves a cam compared to the benders that previously used two.
  • the mask cam 36 may have another structure, for example with only one active part, and whose radial displacement is not necessarily provided via a toggle mechanism.
  • the jack 64 is preferably provided with blockers of its exhaust chambers in order to overcome any unwanted air interruptions during production.
  • the jack 64 may be more generally replaced by any other actuating device and may be provided with sensors for detecting its position.
  • the invention can also be applied to a jaw folder. As illustrated by figure 8 in such a folder the rollers 5 are replaced by a jaw cylinder 75.

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Switches With Compound Operations (AREA)

Claims (9)

  1. Falzmaschine (1) zum Schneiden und Falzen eines Streifens (2) von Papier, wobei die Falzmaschine von dem Typ ist, der folgendes umfasst:
    - eine Schneidvorrichtung (4) von Blättern (12 bis 20) in dem Streifen (2),
    - einen Falzzylinder (3), der mit beweglichen Haltevorrichtungen und beweglichen Falzklingen (9 bis 11) der geschnittenen Blätter (12 bis 20) in dem Streifen versehen ist, wobei der Zylinder (3) rotatorisch um seine Achse (A) beweglich ist,
    - einen Schaltnocken (26) für die Verschiebung der beweglichen Haltevorrichtungen (6 bis 8) durch Kontakt mit den Nocken-Begleitern,
    - einen Schaltnocken (28) für die Verschiebung der im Einsatz befindlichen Klingen (9 bis 11) durch Kontakt mit den Nocken-Begleitern, und
    - mindestens einen einziehbaren Nocken (36), der eine Betriebskonfiguration zum Sammeln, in der der einziehbare Nocken (36) Zonen (37) von mindestens einem der Schaltnocken (26, 28) außer Kraft setzt, und eine Betriebskonfiguration zur ungesammelten Produktion, in der der einziehbare Nocken (36) nicht mit den Zonen interferiert, aufweist,
    wobei der einziehbare Nocken (36) zwei Halbnocken (40) umfasst, die im Wesentlichen bezüglich der Achse (A) des Zylinders (3) zueinander symmetrisch sind, jeweils zwischen einer eingefahrenen und einer ausgefahrenen Position radial beweglich sind, wobei sich der einziehbare Nocken (36) in der Betriebsfunktion zur ungesammelten Produktion befindet, wenn die Halbnocken (40) in der eingefahrenen Position sind, und sich in der Betriebsfunktion zum Sammeln befindet, wenn die Halbnocken (40) in der ausgefahrenen Position sind,
    dadurch gekennzeichnet, dass
    die Falzmaschine eine Steuerweiche (62) des einziehbaren Nockens (36) und eine Vorrichtung (64) zum Verschieben der Steuerweiche (62) zwischen einer radial distalen Position, in der die Steuerweiche (62) dazu bestimmt ist, ein Element (72) radial nach außen zu führen, das von dem einziehbaren Nocken (36) getragen wird, damit der einziehbare Nocken (36) in die Betriebskonfiguration zum Sammeln übergeht, und einer proximalen Position, in der die Steuerweiche (62) dazu bestimmt ist, das Element (72) radial nach innen zu führen, um den einziehbaren Nocken (36) in die Betriebskonfiguration zur ungesammelten Produktion zu bringen, umfasst.
  2. Falzmaschine (1) nach Anspruch 1, wobei der einziehbare Nocken (36) dazu bestimmt ist, Zonen des Nockens (26) zur Steuerung der Verschiebung der Haltevorrichtungen (6 bis 8) und Zonen des Nockens (28) zur Steuerung der der Verschiebung der im Einsatz befindlichen Klingen (9 bis 11) außer Kraft zu setzen.
  3. Falzmaschine (1) nach Anspruch 1 oder 2, wobei die Betriebskonfigurationen zum Sammeln und zur ungesammelten Produktion stabil sind.
  4. Falzmaschine (1) nach Anspruch 3, wobei der Nocken (36) mindestens einen Schnallenmechanismus (44) umfasst, der während des Übergangs der Betriebskonfiguration zum Sammeln zu der Betriebskonfiguration der ungesammelten Produktion eine ausgerichtete Position durchläuft.
  5. Falzmaschine nach Anspruch 4, wobei der einziehbare Nocken (36) ein Mittel (38) umfasst, auf dem die beiden Halbnocken (40) gelenkig verbunden sind, wobei jeder Halbnocken (40) weiterhin mit dem Mittel (38) über einen Schnallenmechanismus (44) verbunden ist, der während des Übergangs der Betriebskonfiguration zum Sammeln zu der Betriebskonfiguration der ungesammelten Produktion eine ausgerichtete Position durchläuft.
  6. Falzmaschine nach einem der vorhergehenden Ansprüche, wobei der einziehbare Nocken (36) mindestens eine Rückholvorrichtung (42) von jedem Halbnocken (40) in Richtung seiner ausgefahrenen Position umfasst.
  7. Falzmaschine nach Anspruch 6, wobei die Rückholvorrichtung eine Gasfeder (42) ist.
  8. Falzmaschine nach einem der vorhergehenden Ansprüche, wobei die Falzmaschine eine breitwürfige Falzmaschine darstellt, die zwei Walzen (5) umfasst, die mit den im Einsatz befindlichen Klingen (9 bis 11) des Falzzylinders (3) zusammenwirken.
  9. Falzmaschine nach den Ansprüchen 1 bis 7, wobei die Falzmaschine eine Backenfalzmaschine darstellt, die eine Backenwalze, die mit den im Einsatz befindlichen Klingen (9 bis 11) des Falzzylinders (3) zusammenwirkt, umfasst.
EP07291042A 2006-08-28 2007-08-24 Falzmaschine mit einziehbarem Nocken zum Umschalten des Betriebsmodus Not-in-force EP1894872B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0607564A FR2905081B1 (fr) 2006-08-28 2006-08-28 Plieuse a came masque retractable pour changement de mode de fonctionnement.

Publications (2)

Publication Number Publication Date
EP1894872A1 EP1894872A1 (de) 2008-03-05
EP1894872B1 true EP1894872B1 (de) 2010-10-27

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Application Number Title Priority Date Filing Date
EP07291042A Not-in-force EP1894872B1 (de) 2006-08-28 2007-08-24 Falzmaschine mit einziehbarem Nocken zum Umschalten des Betriebsmodus

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Country Link
US (1) US7744518B2 (de)
EP (1) EP1894872B1 (de)
JP (1) JP4778487B2 (de)
CN (1) CN101148115B (de)
AT (1) ATE486036T1 (de)
DE (1) DE602007010061D1 (de)
FR (1) FR2905081B1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5194311B2 (ja) * 2010-12-24 2013-05-08 株式会社東京機械製作所 折畳み装置
JP5425294B1 (ja) * 2012-11-21 2014-02-26 株式会社東京機械製作所 バリアブルカットオフ折機、及びバリアブルカットオフ折機を備える印刷機
DE102013203471B3 (de) * 2013-03-01 2014-02-06 Koenig & Bauer Aktiengesellschaft Zylinder eines Falzapparates
DE102013102728A1 (de) * 2013-03-18 2014-09-18 Manroland Web Systems Gmbh Falzeinrichtung einer Druckmaschine und Verfahren zum Betreiben der Falzeinrichtung

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2016486A (en) * 1933-05-04 1935-10-08 Goss Printing Press Co Ltd Folding mechanism
DE4041613A1 (de) * 1990-02-19 1991-08-22 Frankenthal Ag Albert Falzapparat
FR2692875B1 (fr) * 1992-06-25 1994-10-07 Heidelberger Druckmasch Ag Appareil de pliage pour la réalisation d'exemplaires pliés à partir d'une bande de papier imprimée.
FR2711576B1 (fr) * 1993-10-26 1996-01-19 Heidelberg Harris Sa Dispositif de commande de l'accumulation ou non accumulation d'un cylindre coupeur-accumulateur d'une plieuse.
JP3756960B2 (ja) * 1993-12-01 2006-03-22 東芝機械株式会社 コレクト機構付折機
DE19616629A1 (de) * 1995-08-23 1997-11-06 Heidelberg Harris Sa Vorrichtung zur Umstellung eines produktführenden Zylinders am Falzapparat
DE69608386T2 (de) * 1995-09-19 2000-09-21 Goss Graphic Systems, Inc. Antriebsvorrichtung für eine Falzmaschine in einer Druckmaschine
US6093139A (en) * 1998-01-27 2000-07-25 Heidelberger Druckmaschinen Ag Folding apparatus for rotary printing presses
US6547232B2 (en) * 2000-12-01 2003-04-15 Heidelberger Druckmaschinen Ag Device and method for switching between collect and straight modes on a folder
JP2004149272A (ja) * 2002-10-31 2004-05-27 Tokyo Kikai Seisakusho Ltd コレクト折り機能付き折機
DE102004020305A1 (de) 2004-04-26 2005-11-17 Koenig & Bauer Ag Falzapparat für Sammelbetrieb
JP4267512B2 (ja) * 2004-04-30 2009-05-27 株式会社小森コーポレーション 折機の平行折装置

Also Published As

Publication number Publication date
FR2905081A1 (fr) 2008-02-29
ATE486036T1 (de) 2010-11-15
CN101148115B (zh) 2010-06-02
US7744518B2 (en) 2010-06-29
US20080064583A1 (en) 2008-03-13
FR2905081B1 (fr) 2010-04-30
JP2008056493A (ja) 2008-03-13
EP1894872A1 (de) 2008-03-05
JP4778487B2 (ja) 2011-09-21
CN101148115A (zh) 2008-03-26
DE602007010061D1 (de) 2010-12-09

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