EP2281766A1 - Dispositif et procédé destinés au pliage de produits en papier - Google Patents

Dispositif et procédé destinés au pliage de produits en papier Download PDF

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Publication number
EP2281766A1
EP2281766A1 EP10405144A EP10405144A EP2281766A1 EP 2281766 A1 EP2281766 A1 EP 2281766A1 EP 10405144 A EP10405144 A EP 10405144A EP 10405144 A EP10405144 A EP 10405144A EP 2281766 A1 EP2281766 A1 EP 2281766A1
Authority
EP
European Patent Office
Prior art keywords
folding
fold
product
paper product
rollers
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.)
Withdrawn
Application number
EP10405144A
Other languages
German (de)
English (en)
Inventor
Michael Trachsler
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.)
Ferag AG
Original Assignee
Ferag 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 Ferag AG filed Critical Ferag AG
Publication of EP2281766A1 publication Critical patent/EP2281766A1/fr
Withdrawn legal-status Critical Current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
    • B65H45/22—Longitudinal folders, i.e. for folding moving sheet material parallel to the direction of movement
    • 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
    • B65H2404/10—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
    • B65H2404/10—Rollers
    • B65H2404/11—Details of cross-section or profile
    • 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
    • B65H2404/10—Rollers
    • B65H2404/11—Details of cross-section or profile
    • B65H2404/111—Details of cross-section or profile shape
    • B65H2404/1113—C-shape
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/2419—Fold at edge
    • Y10T428/24264—Particular fold structure [e.g., beveled, etc.]

Definitions

  • the invention relates to the field of processing of paper products, in particular printed products.
  • the invention relates to an apparatus and a method for folding a sheet product, in particular a paper product, as well as a folded paper product according to the preamble of the corresponding independent claims.
  • Such a device and a method are for example off DE 28 42 226 (Corresponding: US 4,265,437 A multi-leaflet newspaper, which is provided with a transverse break, is folded over a further longitudinal fold, wherein on a Falzinnenseite a Gegenknick or Gegenfalz is generated, which has a curvature which is opposite to the curvature of the generating fold (on the outside) ,
  • the device has for this purpose a plurality of pairs of equiaxed folding discs, on the circumference of each of which a folded edge is formed and which are spaced apart by a gap.
  • the folding discs press against the product while it is being folded against the folding discs, forming the counter-buckling in the space between the folding discs.
  • EP 0 413 371 B1 discloses various variants of pressure rollers about which a printed product is folded.
  • a roller is driven, for which purpose a groove is formed on the roller, in which a drive belt is located.
  • a clearance ie the groove for the drive belt
  • the roller is not driven and also has no groove (Fig. 12).
  • DE 23 30 513 shows a folding unit in which a product is folded around a belt, which is guided along a row of rollers and moves in the conveying direction with the product.
  • the belt runs along the entire area in which the product is bent.
  • a Jacobfalz is not provided.
  • DE 571 796 discloses a device for folding sheets by bending the sheet halves. There are profile rollers for holding down the bow. An angle of the profile of these rollers adapts, along the conveying direction, to the decreasing angle between the arcuate legs. A Jacobfalz is not provided here.
  • EP 0 415 077 shows a folding apparatus, which forms in a sheet material, a first fold in the running direction and a second fold in the transverse direction. Subsequently, with an arrangement of bands, a third fold is again formed in the running direction, wherein the sheet material moves continuously and without stopping by the folder.
  • the folded edges extend, viewed in the conveying direction, side by side and thereby define a gap formed in the conveying direction between the folded edges.
  • the column thus has a decreasing width in the conveying direction corresponding to the spacing of the folded edges.
  • the sheet products in particular paper products are conveyed by the means of the device and folded over the folding organs, wherein a longitudinal fold is formed.
  • a Jacobfalz forms with a curvature of the L Lucassfalzes opposite curvature.
  • the formation of the Gegenfalzes thus takes place in a controlled manner.
  • the fold protects the folded products (material and print, if necessary), and the products are easier to open due to the better defined fold. Thanks to the clean fold, the products also look better quality.
  • the invention also makes it possible to fold both thin and thick products without having to readjust the device.
  • a counter-break or a notch is formed, in which the counter-fold merges into a counter-fold valley, which leads to the transverse fold.
  • the counter-valley fold leads, in particular, to an actual bending point of the transverse fold, at which the outer part of the newly formed longitudinal fold strikes the transverse fold.
  • a Aufrichteech for turning the paper product to the folding members preferably comprises two mirror-symmetrically arranged to a center plane guide elements, which guide surfaces for turning the paper product form.
  • the guide surfaces wind helically around a straight line, which runs parallel to the future folding edges.
  • the objects are fixed by a pressing device between mutually cooperating pressing elements, which act as folding organs.
  • the folding members are preferably also part of the conveyor and can serve to drive in the conveying direction.
  • the pressing elements include, for example, pressure rollers and folding rollers, which press the products in the region of the future folded edge against a counter element.
  • the counter element is, for example, a circumferentially driven belt.
  • the rollers are typically located in the center plane of the erecting unit and are rotatable about an axis normal to the median plane. Translational displacements in a direction perpendicular to the direction of conveyance are possible to compensate for differences in thickness of the products, to which the rollers are elastically yielding and pressed under bias against the counter element. In a direction parallel to the conveying direction, the rollers are substantially stationary.
  • the folding roller each have two acting as folding edges peripheral edges which are spaced from each other by the gap. In the conveying direction successive folding rollers have a role from roller to monotonically smaller gap.
  • the folding members are not rollers, but tapes, which are guided over deflection rollers and extend along the valley folds to Martinezfalz.
  • the folding rollers may be formed in one piece, or in several parts.
  • Material of the folding rollers can be a metal (steel, brass, aluminum, ...) or a hard plastic, or a combination of different materials can be used.
  • the folding rollers each have two roller halves, which are each rotatable about its own axis, wherein the axes of rotation of the two roller halves are not coaxial, but with respect to the normal to a median plane of the device are (slightly) inclined.
  • the roller halves are thus slightly rotated relative to each other about an axis which runs in the center plane and perpendicular to the conveying surface.
  • the folded paper product is in particular a printed product, preferably Herblättrig, and has a transverse fold and a subsequent to the transverse fold longitudinal fold, wherein at the inner side of the L Lucassfalzes an inner part of the sheets is folded with a curvature opposite to the curvature of the longitudinal fold and a Gegenfalz forms.
  • a notch or a counterbore in which the counterfold merges into a counterfold valley fold, which leads to the transverse fold.
  • FIGS. 2a . 2b and 2c show various views of a folded paper product according to the invention, also referred to below as product 2.
  • FIG. 2a schematically shows a view of a product 2, which was again partially opened after a fold around a longitudinal fold 12. The folds on the inside of the longitudinal fold 12 are shown for greater clarity greater than they would appear in a typical product 2, for example, in a folded newspaper.
  • the shown folded product is produced by folding around a transverse fold 13 and by subsequent folding around the longitudinal fold 12. It may be present before folding around the transverse fold 13 already a fold around a first longitudinal fold (not shown here).
  • two product halves are folded at least approximately in the middle about the longitudinal fold 12 upwards.
  • the product 2 is symmetrical about a median plane passing through the longitudinal fold 12.
  • a lower, outer part of the several leaves of the product forms a Talfalz as an outer part of the longitudinal fold 12 (in FIG. 2a not visible, but see Figures 3c-3f ).
  • an upper, inner part of the sheets is folded up to form a counterfold 14. This forms a fold over the fold, its curvature is opposite the curvature of the longitudinal fold 12 as a whole.
  • Material surfaces which adjoin the rebate 14, go to valley folds 15 of the Gegenfalzes 14 in the unfolded areas of the product inside.
  • the sections of the transverse fold 13 are lengthened in thought at the two mutually folded product halves, they intersect at an ideal break point 22 of the transverse fold. If the product consisted of only one leaf, this would be the actual break point. However, because the product is partially folded down into the outer part of the longitudinal fold 12 and partially up into the counterfold 14 because of its thickness, the length of the material extends between corner 17 and the end of the counterfold valley fold 19 (at the transverse fold 13) ) not to the ideal break point 22 of the transverse fold. The actual break point 21 of the transverse fold is therefore pulled somewhat into the product 2 during folding, and is spaced from the ideal break point 22 by a difference or distance d.
  • the distance is more than a millimeter or more than two millimeters.
  • portions 23 of the transverse fold 13, which lie between the actual break point 21 and the two counter-break kinks 20 (hereinafter referred to counter-break portions 23 of the transverse fold), are bent inwardly or kinked with respect to the remaining portions of the transverse fold. This is through the side view of FIG. 2b and a corresponding detail view 2c of the area A of FIG. 2b further clarified.
  • FIG. 3a shows parts of a folding unit 200 according to the invention, namely a conveyor 202, a Aufrichteech 210 for bending / folding of the products and a transfer unit 220 for stationary conveying the products.
  • the products themselves, for example, a subsequent press unit for pressing the fold and a transfer device for rotating the folded, vertically oriented products in a horizontal position are not shown.
  • the conveyor 202 serves for conveying the products to be folded by the folding unit 200. It comprises several sub-conveyor:
  • a first part conveyor 201 has a driven belt 204, which is deflected over a plurality of rollers 203.
  • the active strand of the belt 204 defines a narrow conveying surface on which the products rest in the region of their future folding edges and are moved in the conveying direction F1.
  • the longitudinal fold 12 produced in the product is thus parallel to the conveying direction.
  • the belt 204 has in the illustrated embodiment a round toothing for its centering on the rollers 203, as can be seen on one of the rollers 203.
  • the products are pressed against the belt 204 by pressure rollers 3 and folding rollers 5, 5 ', 5 ", 5"'. This is stabilized from below by other rollers or support rollers 206.
  • the support rollers are preferably arranged in each case corresponding to the folding rollers, that is, that they lie opposite the folding rollers with respect to the belt, with one support roller opposite a folding roller.
  • Belt 204, support rollers 206 and pressure rollers 3 form a pressing device 207 for fixing the future folding edges.
  • the belt 204 or the conveying surface may have a groove into which the products are pressed by the folding members.
  • the pressure rollers 3 and folding rollers 5, 5 ', 5 ", 5"' are mounted on holding elements 216 around axes transverse to the conveying direction F1. These allow a resilient yielding of the pressure rollers 3 and folding rollers 5, 5 ', 5 “, 5"' upwards, against the force of gravity and / or a spring force (with bias), but no substantial movement of the pressure rollers 3 and folding rollers 5, 5 ' , 5 “, 5 '” in the conveying direction.
  • each case two pressure rollers 3 are mounted in a common bearing body 218, which is pivotable about a pivot axis 217 (parallel to the axes 215 of the pressure rollers 3) with respect to the holding elements.
  • a pivot axis 217 parallel to the axes 215 of the pressure rollers 3
  • folding rollers 5 ', 5 ", 5"' is below, in connection with the FIGS. 3b-3f received.
  • a second sub-conveyor 222 is integrated into the transfer unit 220 for standing conveyance and guiding of the pre-folded products. It comprises a plurality of rollers 221 deflected via rollers 223, which are driven in pairs in opposite directions. Between them, a vertical conveying gap is formed for the products. The rollers have a spring-loaded bearing 224 so that the conveying gap has a variable width.
  • the second part conveyor 222 is coupled via a coupling element 225, here another belt, to the drive for the first part conveyor 201.
  • the erecting unit 210 comprises two flat guide elements 212 arranged laterally of the belt 204, of which only one is shown here.
  • the guide elements 212 are mirror-symmetrical to a generally vertical center plane of the folding unit 200 is formed.
  • the guide elements 212 act together in the manner of a folder. They serve to bend the product halves of a product 2 on both sides of the fold 12 to be produced to each other high. Characterized the longitudinal edge 12 of a product 2 is formed on the conveying surface and in the conveying direction F1, and a median plane of the product 2 lies in the median plane of the folding unit.
  • At the entrance of the folding unit 200 are the guide surfaces 213 in the horizontal conveying plane and change in the course of their orientation by bulging up and V-shaped converge.
  • the guide surfaces 213 helically wind around a straight line which runs parallel to the future folded edge 12.
  • the product 2 unfolded at the exit of the erecting unit 210 is subsequently transferred to the transfer unit 220 and conveyed by the sub-conveyor 222 there in a vertical conveying plane (center plane), i. standing, controlled further promoted. In a standing position, the products are 2 controlled passed to a press unit or taken from this.
  • a vertical conveying plane center plane
  • FIGS. 3b-3f show in the conveying direction successive pressure rollers 3 and folding rollers 5, 5 ', 5 ", 5"', as well as their effect on the products.
  • FIG. 3b shows a pressure roller 3 of a first set of rollers, which is looped by a Anpressriemen 4.
  • the Anpressriemen 4 is drawn as a round belt, but may also have a different shape, such as a wedge shape or V-shape.
  • the pressure rollers 3 of the first roller set press the products 2 against the belt 204 in preparation for the subsequent folding.
  • the Anpressriemen 4 is made of an elastic material and thereby stabilizes irregularities in movement and position of the products. 2
  • the Anpressriemen 4 can also, as in the FIG. 3a dashed lines drawn, not only to the pressure rollers 3 but also to one or more of the folding rollers 5, 5 ', 5 ", 5"' run respectively be guided. This improves the management of the products 2 and the synchronization of the products 2: bumping movements are reduced or eliminated, the pinching between the pressing belt 4 and the belt 204 is improved.
  • Figures 3c - 3f show folding rollers 5, 5 ', 5 ", 5"' with decreasing in the conveying direction F1 gap.
  • the gap is at each of the folding rollers 5, 5 ', 5 ", 5"' between two peripheral edges 6, 6 ', 6 ", 6"' of the folding rollers.
  • the unnumbered folding rollers preferably have a gap width which is between that of the preceding roller and that of the subsequent roller. But it can also have immediately consecutive roles the same gap width.
  • the counterfolding counterfolding is done as follows: In contrast to DE-C 28 42 226 , in which subsequent folding rollers have the same gap width as the first folding roller 5, is reduced here in the subsequent folding rollers 5 ', 5 ", 5'" ( Figures 3d-3f ) the gap noticeably, in line with the folding up of the two halves of the product. As a result, the valley folds 15 of the Gegenfalzes 14th folded towards each other (in the direction perpendicular to the conveying direction), and the Gegenfalz 14 itself is further pressed together and upwards.
  • the surfaces (respectively the material) between valley folds 15 and counter fold 14 are visibly and against each other in a well-defined manner until they are approximately parallel. Precise, sharp edges are formed in the valley folds 15 and the counterfold 14, in particular after pressing the folded product 2 in the subsequent press unit.
  • the transverse fold 13 will be at the end of the counterstop -Calf fold 19 involved. This creates the difference d between the ideal break point 22 of the transverse fold 13 and the actual break point 21 of the transverse fold 13. This also creates the counter-break section 23 of the transverse fold 13, ie the bent region of the transverse fold 13 between the two counter-break kinks 20 and actual break point 21 of the transverse fold thirteenth
  • the shown pressure rollers 3 and folding rollers 5, 5 ', 5 ", 5"' are not driven, and run along with the driven belt 204. In other preferred embodiments of the invention, some or all of these rollers may be driven.

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
EP10405144A 2009-08-03 2010-07-29 Dispositif et procédé destinés au pliage de produits en papier Withdrawn EP2281766A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH01210/09A CH701620A1 (de) 2009-08-03 2009-08-03 Vorrichtung und Verfahren zum Falzen eines Papiererzeugnisses.

Publications (1)

Publication Number Publication Date
EP2281766A1 true EP2281766A1 (fr) 2011-02-09

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EP10405144A Withdrawn EP2281766A1 (fr) 2009-08-03 2010-07-29 Dispositif et procédé destinés au pliage de produits en papier

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US (1) US20110027527A1 (fr)
EP (1) EP2281766A1 (fr)
CH (1) CH701620A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE571796C (de) 1931-09-22 1933-03-06 Brehmer Geb Verfahren zum Falzen von Bogen oder Lagen
DE2330513A1 (de) 1973-06-15 1975-01-16 Goebel Gmbh Maschf Einrichtung zum laengsfalzen von bogen aus papier, folie oder dergleichen
DE2842226A1 (de) * 1977-10-24 1979-04-26 Ferag Ag Verfahren und einrichtung zum falzen von mehrblaettrigen papiererzeugnissen, insbesondere zum nochmaligen laengsfalzen von mit einem querbruch versehenen zeitungen
US4898373A (en) * 1986-07-03 1990-02-06 Newsome John R High speed signature manipulating apparatus
EP0413371A2 (fr) * 1989-06-19 1991-02-20 SITMA S.p.A. Dispositif automatique pour plier de feuilles
EP0415077A1 (fr) 1989-08-31 1991-03-06 Heidelberger Druckmaschinen Aktiengesellschaft Appareil de pliage

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE571796C (de) 1931-09-22 1933-03-06 Brehmer Geb Verfahren zum Falzen von Bogen oder Lagen
DE2330513A1 (de) 1973-06-15 1975-01-16 Goebel Gmbh Maschf Einrichtung zum laengsfalzen von bogen aus papier, folie oder dergleichen
DE2842226A1 (de) * 1977-10-24 1979-04-26 Ferag Ag Verfahren und einrichtung zum falzen von mehrblaettrigen papiererzeugnissen, insbesondere zum nochmaligen laengsfalzen von mit einem querbruch versehenen zeitungen
US4265437A (en) 1977-10-24 1981-05-05 Ferag Ag Method and apparatus for folding multi-sheet paper products, especially for the further longitudinal folding of newspapers having a transverse break
DE2842226C2 (de) 1977-10-24 1986-10-30 Ferag AG, Hinwil, Zürich Vorrichtung und Verfahren zum weiteren Längsfalzen von mit einem Querbruch versehenen, mehrblättrigen Zeitungen
US4898373A (en) * 1986-07-03 1990-02-06 Newsome John R High speed signature manipulating apparatus
EP0413371A2 (fr) * 1989-06-19 1991-02-20 SITMA S.p.A. Dispositif automatique pour plier de feuilles
EP0413371B1 (fr) 1989-06-19 1994-05-04 SITMA S.p.A. Dispositif automatique pour plier de feuilles
EP0415077A1 (fr) 1989-08-31 1991-03-06 Heidelberger Druckmaschinen Aktiengesellschaft Appareil de pliage

Also Published As

Publication number Publication date
CH701620A1 (de) 2011-02-15
US20110027527A1 (en) 2011-02-03

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