EP2100841A1 - Faltgerät zum Falten von Papier - Google Patents

Faltgerät zum Falten von Papier Download PDF

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Publication number
EP2100841A1
EP2100841A1 EP08152509A EP08152509A EP2100841A1 EP 2100841 A1 EP2100841 A1 EP 2100841A1 EP 08152509 A EP08152509 A EP 08152509A EP 08152509 A EP08152509 A EP 08152509A EP 2100841 A1 EP2100841 A1 EP 2100841A1
Authority
EP
European Patent Office
Prior art keywords
folding
sheets
sheet
cylinders
nip
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Withdrawn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
EP08152509A
Other languages
English (en)
French (fr)
Inventor
Sytema Herman
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.)
Quadient Technologies France SA
Original Assignee
Neopost Technologies 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 Neopost Technologies SA filed Critical Neopost Technologies SA
Priority to EP08152509A priority Critical patent/EP2100841A1/de
Publication of EP2100841A1 publication Critical patent/EP2100841A1/de
Withdrawn legal-status Critical Current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
    • B65H45/18—Oscillating or reciprocating blade folders
    • 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
    • B65H45/14—Buckling folders

Definitions

  • the invention relates to a folder according to the introductory portion of claim 1.
  • Such a folder is known from United States Patent 4,643,705 .
  • a portion of a sheet is bent and fed into a nip between folding cylinders where a fold is formed in the sheet.
  • the sheets need to be of such sizes that at least the outer sheets are simultaneously engaged by the folding cylinders while a portion of the sheet is bent and the bent portion is passed into the folding nip and folded.
  • This requirement limits the versatility of the folder, because it is not possible to process sets of sheets of which one or more outer sheets are too small to be engaged by the folding cylinders at the start of the folding process.
  • the sheet support structure further constitutes at least one clamping area for clamping a set of sheets at least in a position spaced from the folding cylinders, a set of sheets to be folded is not only held together at the folding cylinders, but also in a position spaced from the folding cylinders. This ensures that, during folding, also sheets which are too short to extend to the folding cylinders are reliably entrained towards and through the folding nip by the sheet or sheets of greater lengths.
  • a folder is shown equipped with a pair of folding cylinders 1, 2, a sheet support structure 7, a first circulatable pressing member in the form of a roller 9 with a circumferential surface 10 and a second circulatable pressing member in the form of a roller 13 with a circumferential surface 14.
  • the folding cylinders 1, 2, which are mutually coupled via interengaging gear wheels 27, 28 coaxial with the folding cylinders 1, 2 and coupled to a drive roller 29 via a drive belt 30.
  • the folding cylinders 1, 2 define a folding nip 3 for pressing a fold 4 in a bent portion 5 of a sheet or set of sheets 6 passing through the folding nip 3 in a transport direction 18, while the folding cylinders 1, 2 are rotating in the transport direction.
  • the sheet support structure 7 for supporting the sheet or the set of sheets 6 along a sheet plane 8 extends along a first side of the folding cylinders 1, 2 and the folding nip 3. In an operating condition just before, during and after folding (see Figs.
  • the circumferential surfaces 10 of the pressing rollers 9, 13 are in contact with circumferences 11 and, respectively 12 of the folding cylinders 1, 2 for urging the set of sheets 6 in circumferential sense along the respective folding cylinders 1, 2 towards the folding nip 3. Furthermore, the first and second pressing rollers 9, 13 are located on the first side of the folding cylinders 1, 2 and the folding nip 3 where the sheets 6 are located before folding.
  • the sheet support structure 7 is constituted by a third circulatable pressing member in the form of a third pressing roller 15, a fourth circulatable pressing member in the form of a fourth pressing roller 17 opposite the third pressing roller, support plates 19, 20, 21, a fifth circulatable pressing member in the form of a fifth pressing roller 22, a sixth circulatable pressing member in the form of a sixth pressing roller 23 opposite and an abutment 24 against which a set of sheets 6 can be gathered and aligned.
  • a circumferential surface of the third pressing roller 15 constitutes a clamping surface of a clamping area 16.
  • the clamping area 16 is formed between the third and fourth pressing rollers 15, 17 for clamping a sheet or set of sheets 6 in a position spaced from the folding cylinders 1, 2.
  • a further clamping area 39, spaced from the folding cylinders 1, 2 is formed between the fifth pressing roller 22 and the sixth pressing roller 23.
  • the first and second pressing rollers 9, 13 opposite the folding cylinders 1, 2, the fourth and sixth pressing rollers 17, 23 opposite the third and fifth pressing rollers 15, 22 and a folding knife 24 are carried by a pressing frame 25 which is movable between a retracted position ( Fig. 1 ) and a pressing position ( Figs. 2 and 3 ).
  • a clearance is left between on the one hand the folding cylinders 1, 2 and the third and fifth pressing rollers 15, 22 and, on the other hand, the first, second, fourth and sixth pressing rollers 9, 13, 17, 23.
  • a set of sheets 6 to be folded can be received and moved until it reaches a position in which the sheets are aligned against the abutment 24.
  • the frame 25 is in the pressing position, the first, second, fourth and sixth pressing rollers 9, 13, 17, 23 are pressed towards, respectively, the folding cylinders 1, 2 and the third and fifth pressing rollers 15, 22.
  • a third folding roller 31 and the second folding roller 2 define a second folding nip 32.
  • the third folding roller 31 and the second folding roller 2 are mutually coupled via the gear wheel 28 coaxial with the second folding cylinder 2 and a further gear wheel 33 coaxial with the third folding cylinder 31.
  • a second folding knife 34 and a seventh pressing roller 35 are mounted to a second pressing frame 36, which is movable between a retracted position ( Figs. 1 and 2 ) and a pressing position ( Fig. 3 ). When the pressing frame 36 is in the retracted position, a clearance is left between, on one side the seventh pressing roller 35 and the folding knife 34 and, on the other side, the second folding cylinder 2 and the third folding cylinder 31.
  • the seventh pressing roller 35 is pressed against the third folding cylinder 31 and the second folding knife 34 is moved towards the second folding nip for bending another portion of the sheets 6 extending along the second folding cylinder 2 and the third folding cylinder 31.
  • the pressing frame is displaced from the retracted position into the pressing position.
  • the set of sheets 6 is clamped between the folding cylinders 1, 2 and the first and second pressing rollers 9, 13.
  • the sheets are clamped in the clamping area 16 between the third and fourth pressing rollers 15, 17.
  • the sheets are also clamped between the fifth and sixth pressing rollers 22, 23.
  • a portion 26 of the sheets 6 that extends over the folding nip 3 is bent by the folding knife 24 pressing that bent portion 26 of the sheets 6 in the transport direction 18 towards the folding nip 3 and is subsequently buckled by simultaneously rotating the folding cylinders 1, 2 such that surface portions of the folding rollers 1, 2 move in the transport direction 18.
  • This causes sheet portions on opposite sides of the bent portion 5 as well as the first and second pressing members 9, 13 to be entrained by the folding cylinders 1, 2 such that the curved portion 5 is bent further and urged towards and into the folding nip 3 between the folding cylinders 1, 2.
  • This causes the bent portion 5 to be bent further and when a pleat formed thereby passes in the transport direction 18 through the nip 3, a fold 4 is pressed in the bent portion 5 of the sheets 6 by the folding cylinders 1, 2.
  • the set of sheets 6 is transported through the folding nip 3 until a position extending along the second folding cylinder 2 and the third folding cylinder 31 is reached. Then, the pressing frame 36 is moved to the pressing position, so that the sheets 6 are clamped between the seventh pressing roller 35 and the third folding cylinder 31 and the second folding knife 34 is moved towards the second folding nip 32 for bending another portion of the sheets 6 extending along the second folding cylinder 2 and the third folding cylinder 31.
  • first a pleat is formed from the second bent portion, which is then folded in the second folding nip 32.
  • the sheet support structure 57 has first to fourth circulatable pressing members in the form of first to fourth conveyor belts 59, 63, 65, 72.
  • the folder according to this example is further equipped with first and second folding cylinders 51, 52 defining a folding nip 53 for pressing a fold in a curved portion 55 of a sheet or set of sheets 56 passing through the folding nip 53 in a transport direction, while the folding cylinders 51, 52 are rotating in the transport direction.
  • the sheet support structure 57 is arranged for supporting the sheet or the set of sheets 56 along a sheet plane 58 extending along a first side of the folding cylinders 51, 52 and the folding nip 53.
  • the first conveyor belt 59 has a circumferential surface 60 in contact with a circumference 61 of a first one of the folding cylinders 51 for urging the sheet or the set of sheets 56 in circumferential sense along the first folding cylinder 51 towards the folding nip 53.
  • the second conveyor belt 63 has a circumferential surface 64 which is in contact with a circumference 62 of a second one of the folding cylinders 52 for urging the sheet or the set of sheets 56 in circumferential sense along the second folding cylinder 52 towards the folding nip 53.
  • the third conveyor belt 65 has a circumferential surface of which a section in contact with the second conveyor belt 63 constitutes a clamping surface of a clamping area 66.
  • the clamping area 66 spaced from the folding cylinders 51, 51 is formed between the second and third conveyor belts 63, 65 and, in the operating condition shown in Fig. 4 , the set of sheets 56 is clamped in the clamping area 66 spaced from the folding cylinders 51, 52.
  • One of the folding cylinders 51 is mounted on a pivotable arm 87 so that the first folding cylinder 51 is displaceable to and fro in directions indicated by arrow 88 to be able to separate the circumferences 61, 62 of the folding cylinders 51, 52 temporarily from each other to allow the folding cylinders 51, 52 to rotate in the same sense of rotation while a sheet or set of sheets is transported along the plane 58 to a position supported by the sheet support structure 57 from where the sheet or set of sheets is to be folded.
  • the set of sheets 56 is not only clamped against the folding cylinders 51, 52, but also clamped in the clamping area 66 by the second and third conveyor belts 63, 65 and in a further clamping area 89 between the first and fourth conveyor belts 59, 72.
  • the bent portion 55 of the sheets 56 that extends over the folding nip 53 is bent further, which causes a pleat to be formed and to move into the folding nip 53 until a fold is formed therein in the folding nip 53.
  • This movement is driven by simultaneous rotation in opposite directions of the first and second conveyor belts 59, 63 such that the curved portion 55 between portions of the sheets 56 oriented in different directions is bent further and urged into the folding nip 53.
  • the set of sheets 56 can be transported further past the folding cylinders 51, 52 for further processing.

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
EP08152509A 2008-03-10 2008-03-10 Faltgerät zum Falten von Papier Withdrawn EP2100841A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08152509A EP2100841A1 (de) 2008-03-10 2008-03-10 Faltgerät zum Falten von Papier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08152509A EP2100841A1 (de) 2008-03-10 2008-03-10 Faltgerät zum Falten von Papier

Publications (1)

Publication Number Publication Date
EP2100841A1 true EP2100841A1 (de) 2009-09-16

Family

ID=39628944

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08152509A Withdrawn EP2100841A1 (de) 2008-03-10 2008-03-10 Faltgerät zum Falten von Papier

Country Status (1)

Country Link
EP (1) EP2100841A1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4643705A (en) 1985-07-29 1987-02-17 Xerox Corporation Positive drive knife folder
DE19611787A1 (de) * 1996-03-12 1997-09-18 Francotyp Postalia Gmbh Anordnung zum Falzen von Bögen
US6309336B1 (en) * 1998-04-03 2001-10-30 Texpa Maschinenbau Gmbh & Co. Apparatus for folding a portion of a textile length

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4643705A (en) 1985-07-29 1987-02-17 Xerox Corporation Positive drive knife folder
DE19611787A1 (de) * 1996-03-12 1997-09-18 Francotyp Postalia Gmbh Anordnung zum Falzen von Bögen
US6309336B1 (en) * 1998-04-03 2001-10-30 Texpa Maschinenbau Gmbh & Co. Apparatus for folding a portion of a textile length

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