EP0741097B9 - Vorrichtung zur Endbearbeitung des Falzes von Signaturen - Google Patents

Vorrichtung zur Endbearbeitung des Falzes von Signaturen Download PDF

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Publication number
EP0741097B9
EP0741097B9 EP96107126A EP96107126A EP0741097B9 EP 0741097 B9 EP0741097 B9 EP 0741097B9 EP 96107126 A EP96107126 A EP 96107126A EP 96107126 A EP96107126 A EP 96107126A EP 0741097 B9 EP0741097 B9 EP 0741097B9
Authority
EP
European Patent Office
Prior art keywords
rollers
pair
booklet
roller
passage slot
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
EP96107126A
Other languages
English (en)
French (fr)
Other versions
EP0741097B1 (de
EP0741097A2 (de
EP0741097A3 (de
Inventor
Michel Petitjean
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.)
C P Bourg SA
Original Assignee
C P Bourg SA
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 C P Bourg SA filed Critical C P Bourg SA
Priority to DE1996107126 priority Critical patent/DE741097T1/de
Publication of EP0741097A2 publication Critical patent/EP0741097A2/de
Publication of EP0741097A3 publication Critical patent/EP0741097A3/de
Publication of EP0741097B1 publication Critical patent/EP0741097B1/de
Application granted granted Critical
Publication of EP0741097B9 publication Critical patent/EP0741097B9/de
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
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/12—Delivering or advancing articles from machines; Advancing articles to or into piles by means of the nip between two, or between two sets of, moving tapes or bands or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/20—Belts
    • B65H2404/26—Particular arrangement of belt, or belts
    • B65H2404/261—Arrangement of belts, or belt(s) / roller(s) facing each other for forming a transport nip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/18—Form of handled article or web
    • B65H2701/182—Piled package
    • B65H2701/18271—Piled package of folded sheet material

Definitions

  • the present invention relates to a fold finishing device booklets made up of sheets stacked and folded along a line central (see, for example, DE-A-2 640 411 or US-A-5 125 330).
  • Such booklets can be made by stacking sheets, stapling along a central line and folding along this same central line.
  • the folding is carried out by introduction, to using a blade, a bundle of leaves in the defined slot between two opposite rollers which rotate so as to evacuate the folded booklet.
  • the booklet has a tendency to reopen, mainly due to the elasticity of paper fibers. This tendency of the booklet to reopen is troublesome for later stages such as trimming and above all stacking booklets for packaging.
  • the booklet is passed between one or more pairs of rollers, in order to compress or crush the fold. In this way, we manage to reduce, but not eliminate, the tendency of the booklet to reopen.
  • the present invention provides a device for finishing the fold of booklets which is capable of eliminating virtually any trend from the booklet to reopen.
  • This device comprises at least one pair of parallel rollers and opposites defining between them a passage slot for a booklet, at at least one of said rollers being rotated and the rollers being biased towards each other; in accordance with the invention, the normal on the plane defined by the axes of said pair of rollers is tilted relative to the direction progress of the booklets, and an element of deflection of the booklet is arranged upstream of said passage slot to deviate so forced the path of the booklet towards said passage slot at from said direction of advancement.
  • the forced deflection of the bundle of leaves has the effect of bending and exerting an effort on the paper fibers on the convex side of the bundle curved.
  • the pair of rollers is preferably preceded by another pair of rollers parallel and opposite defining between them a passage slot of a booklet, at least one of said rollers being rotated and the rollers being biased towards each other, the plane defined by the axes of said pair of rollers being normal to the direction progress of the booklets. Spacing between pairs of rollers is such that a booklet engaged in the slot for the passage of the rollers downstream is still engaged in the roller passage slot upstream.
  • the upstream rollers oppose traction, due to the curvature of the bundle, exerted by the downstream rollers on the sheets of paper when the fold is engaged between them.
  • the biasing force towards each other downstream rollers is preferably significantly larger than that of upstream rollers when the booklet is engaged in the slot passage of the downstream rollers.
  • common means of solicitation are provided for the two pairs of rollers, the action of which is selectively applied to one or more the other of these.
  • These means advantageously consist of two elements for transmitting a bearing force on the axis of one of the rolls of each pair, respectively, the bearing force being applied directly to that of the transmission elements which is associated with the upstream rollers and indirectly, by contact between these transmission elements, to that of the transmission elements which is associated with the downstream rollers.
  • the transmission elements consist of pivoting levers having free ends in abutment against one another and intermediate parts bearing on the axis of the associated roller.
  • the booklet fold finisher has two pairs rollers 10, 12, mounted in a frame not shown, in succession along a path of passage of a bundle 14 of folded sheets according to a central line.
  • the lower rollers 10b, 12b are each rotatably mounted about a fixed axis and rotated by a motor 16, via a belt 18.
  • a belt endless 20 is dragged around the rollers 10b, 12b and around a tension roller 22.
  • the upper rollers 10a, 12a are mounted at free rotation and vertical movement; they are solicited towards the lower rollers 10b, 12b and in contact with the belt 20 by an associated spring 24, 26, respectively.
  • Rolls; Coils upper 10a, 12a are rotated indirectly by friction contact with the belt 20, but their rotation is synchronized by a timing belt 28.
  • upper roller 12a is offset from to the lower roller 12b in the direction of the first pair 10 of rollers; normal to the plane defined by the axes of the rollers 12a, 12b is therefore inclined relative to the direction of advancement of the bundle 14.
  • the belt 20 undergoes a deflection on contact with roller 12a.
  • the folded bundle 14 is placed on the belt 20 in front of the first pair 10 of rollers, the fold forming the edge before the bundle.
  • roller 10a is lifted up against the force of the spring 24 and pressure is exerted on the fold of the bundle.
  • the bundle 14 passes in the area where the belt 20 is deflected by the roller 12a. Pressure is then exerted by the strap 20 on the back of the fold of bundle 14, as indicated by a arrow in figure 2.
  • the bundle is deformed along the path of the belt 20, with a convex curvature on the side of the belt and a concave curvature on the side of the roller 12a. By this curvature, the paper fibers are exposed to a tensile force on the side of the belt 20.
  • the deflection of the bundle causes shear forces in the fold area. The combined action of these stresses causes most of the paper fibers to break in the fold area of the bundle 14. As a result, the booklet leaving the device no longer has a tendency to reopen.
  • the spacing between the pairs of rollers 10, 12 is preferably small enough that the bundle 14, when its fold is engaged between the belt 20 and the roller 12a, is still engaged in the passage slot between the belt 20 and the roller 10a.
  • the bundle 14 takes a curved shape due to its deflection in contact with the roller 12a, it tends to advance more quickly on the convex side of the curvature.
  • this rear part of the bundle cannot follow the progress anymore fast on the convex side of the curvature, and the traction exerted on the paper fibers is therefore increased. To ensure this effect, it is important that the drive of the rollers 10b and 12b is synchronous.
  • the belt 20 is replaced by a guide plate 30.
  • the rollers 10a, 10b and 12a, 12b are all coupled as shown schematically in Figure 3, a drive motor 16, by via a transmission chain 32.
  • the rollers lower 10b, 12b have their axes mounted in an adjustable manner height in an eccentric support 34 and 36, respectively. The rotation of these eccentric supports 34, 36 is controlled manually by a steering wheel not shown, to modify the spacing rolls depending on the thickness of the booklets.
  • the rollers 10a, 12a are mounted to travel in arms pivoting 38, 40, respectively.
  • the stress of the rollers 10a, 12a to the rollers 10b, 12b is provided by a common mechanism whose action is selectively applied to the roller 10a and then with roller 12a. More particularly, a pivoting lever 42 is in support on the axis of the roller 10a, and a similar pivoting lever 44 is resting on the axis of the roller 12a.
  • the free ends of the levers 42, 44 are superimposed and have bores aligned through which pass a pull rod 46.
  • the pull rod 46 carries a pack of spring disks 48 which rests on one side on a support element 50 and, on the other side, on a bolt 52 screwed on the free end of the draw rod 46.
  • the pack of discs spring 48 therefore exerts a tensile force on rod 46, the head rests on the free end of the lever 42 which, in turn, pushes on the free end of lever 44.
  • the biasing force rollers 10a, 12a depends on the ratio between the length of the lever 42 or 44 and the distance between the pivot point of each lever and its support zone on the axis of the respective roller. We can vary this ratio to get different stress forces for the pairs of rollers 10, 12, despite the use of a common mechanism.
  • the guide plate 30 forces the bundle on a curved path to break the paper fibers in the fold area.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Claims (12)

  1. Vorrichtung zur Nachbearbeitung des Falzes eines Heftes, das aus gestapelten und entlang einer Mittellinie gefalteten Bögen besteht, mit wenigstens einem Paar (12) von zueinander parallelen und einander gegenüberliegenden Walzen, die zwischen sich einen Durchlaufspalt für ein Heft bilden, wobei wenigstens eine (12b) der Walzen drehangetrieben ist und die Walzen (12a, 12b) gegeneinander beaufschlagt sind, dadurch gekennzeichnet, daß die Senkrechte auf die Ebene, die von den Achsen des Paares (12) von Walzen bestimmt ist, bezüglich der Vorschubrichtung der Hefte geneigt ist und daß ein Element (20) zum Umlenken des Heftes vor dem Durchlaufspalt angeordnet ist, um den Weg des Heftes ausgehend von der Vorschubrichtung in Richtung des Durchlaufspalts zwangsumzulenken.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß vor dem Walzenpaar (12) ein weiteres Paar (10) von zueinander parallelen und einander gegenüberliegenden Walzen angeordnet ist, die zwischen sich einen Durchlaufspalt für ein Heft bilden, wobei wenigstens eine (10b) der Walzen drehangetrieben ist und die Walzen (10a, 10b) gegeneinander beaufschlagt sind, wobei die Ebene, die von den Achsen des weiteren Walzenpaares (10) bestimmt ist, senkrecht zu der Vorschubrichtung der Hefte ist.
  3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Abstand zwischen den Walzenpaaren (10, 12) ein solcher ist, daß ein Heft, das vom Durchlaufschlitz der hinteren Walzen (12a, 12b) erfaßt ist, noch von dem Durchlaufschlitz der vorderen Walzen (10a, 10b) erfaßt ist.
  4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Kraft der Beaufschlagung der vorderen Walzen (12a, 12b) gegeneinander deutlich größer als diejenige der vorderen Walzen (10a, 10b) in dem Moment ist, in welchem das Heft von dem Durchlaufspalt der hinteren Walzen erfaßt wird.
  5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß für die beiden Walzenpaare (10, 12) gemeinsame Beaufschlagungsmittel (46, 48) vorgesehen sind, deren Wirkung selektiv auf das eine oder das andere Paar aufgebracht wird.
  6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Beaufschlagungsmittel zwei Elemente (42, 44) zur Übertragung einer Abstützkraft auf die Achse der einen bzw. der anderen Walze (10a, 12a) jedes Paares enthält, wobei die Abstützkraft direkt auf das Element (42) der Übertragungselemente aufgebracht wird, das den vorderen Walzen (10a, 10b) zugeordnet ist, und indirekt, nämlich durch Berührung zwischen diesen Übertragungselementen (42, 44), auf das Element (44) der Übertragungselemente, das den hinteren Walzen (12a, 12b) zugeordnet ist.
  7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die Übertragungselemente durch zwei Schwenkhebel (42, 44) gebildet sind, deren freie Enden aneinander anliegen und deren Mittelabschnitte sich an der Achse der zugeordneten Walze abstützen.
  8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die Abstützkraft auf die Hebel (42, 44) über eine Zugstange (46) aufgebracht wird, welche miteinander ausgerichtete Öffnungen in den freien Enden dieser Hebel durchquert.
  9. Vorrichtung nach einem der Ansprüche 2 bis 8, dadurch gekennzeichnet, daß das Umlenkelement durch ein Führungsblech (30) gebildet ist, das sich zwischen den Walzenpaaren (10, 12) bis in die Nähe des Durchlaufspaltes zwischen den hinteren Walzen (12a, 12b) erstreckt.
  10. Vorrichtung nach einem der Ansprüche 2 bis 9, dadurch gekennzeichnet, daß das Umlenkelement durch einen Endlosriemen (20) gebildet ist, der über eine Walze (10b, 12b) jedes Walzenpaares läuft.
  11. Vorrichtung nach einem der Ansprüche 2 bis 10, dadurch gekennzeichnet, daß wenigstens eine Walze jedes Paares (10, 12) zwangsdrehangetrieben ist, wobei der Antrieb der Walzen synchron erfolgt.
  12. Vorrichtung nach einem der Ansprüche 2 bis 11, dadurch gekennzeichnet, daß die Achsen der unteren Walzen (10b, 12b) in der Höhe einstellbar an einem Exzenter-Träger (34, 36) angebracht sind, um den Abstand der Walzen in Abhängigkeit von der Dicke der Hefte zu ändern.
EP96107126A 1995-05-04 1996-05-06 Vorrichtung zur Endbearbeitung des Falzes von Signaturen Expired - Lifetime EP0741097B9 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1996107126 DE741097T1 (de) 1995-05-04 1996-05-06 Vorrichtung zur Endbearbeitung des Falzes von Signaturen

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29507466U 1995-05-04
DE29507466U DE29507466U1 (de) 1995-05-04 1995-05-04 Vorrichtung zur Nachbearbeitung eines gefalteten Stapels von Papierbögen

Publications (4)

Publication Number Publication Date
EP0741097A2 EP0741097A2 (de) 1996-11-06
EP0741097A3 EP0741097A3 (de) 1997-03-05
EP0741097B1 EP0741097B1 (de) 2001-12-19
EP0741097B9 true EP0741097B9 (de) 2002-10-02

Family

ID=8007641

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96107126A Expired - Lifetime EP0741097B9 (de) 1995-05-04 1996-05-06 Vorrichtung zur Endbearbeitung des Falzes von Signaturen

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Country Link
EP (1) EP0741097B9 (de)
DE (2) DE29507466U1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0005333D0 (en) 2000-03-07 2000-04-26 Watkiss Automation Ltd Methods of and apparatus for producing booklets
GB2401820B (en) 2003-05-21 2007-01-17 Watkiss Automation Ltd Booklet production
DE10348900B4 (de) 2003-10-16 2006-03-09 Palamides Gmbh Vorrichtung zum Pressen von flächigen Druckereierzeugnissen
DE102007026245B3 (de) * 2007-06-04 2008-08-21 Siemens Ag Vorrichtung zum Transport von flachen Gegenständen unterschiedlicher Dicke
DE102014007446A1 (de) * 2014-05-21 2015-11-26 Heidelberger Druckmaschinen Ag Taschenfalzmaschine mit integrierter Bandpresse

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7136932U (de) * 1971-12-16 Maschinenbau Oppenweiler Binder & Co Preßvorrichtung zum Pressen von gefalzten Bogen
DE2640411A1 (de) * 1976-09-08 1978-03-16 Stahl Gmbh & Co Maschf Verfahren zum pressen gefalzter bogen und walzenpresse zur durchfuehrung dieses verfahrens
EP0417621B1 (de) * 1989-09-13 1993-09-08 Ferag AG Verfahren und Vorrichtung zum Pressen von gefalzten Druckereiprodukten

Also Published As

Publication number Publication date
EP0741097B1 (de) 2001-12-19
EP0741097A2 (de) 1996-11-06
DE29507466U1 (de) 1995-07-06
DE69618066D1 (de) 2002-01-31
DE69618066T2 (de) 2002-08-22
EP0741097A3 (de) 1997-03-05

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