EP2058258B1 - Papierfaltstation - Google Patents

Papierfaltstation Download PDF

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Publication number
EP2058258B1
EP2058258B1 EP07254414A EP07254414A EP2058258B1 EP 2058258 B1 EP2058258 B1 EP 2058258B1 EP 07254414 A EP07254414 A EP 07254414A EP 07254414 A EP07254414 A EP 07254414A EP 2058258 B1 EP2058258 B1 EP 2058258B1
Authority
EP
European Patent Office
Prior art keywords
paper
pair
support
rollers
folding station
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
EP07254414A
Other languages
English (en)
French (fr)
Other versions
EP2058258A1 (de
Inventor
Joseph Babu Vallonthaiel
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.)
Petratto SRL
Original Assignee
Petratto SRL
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 Petratto SRL filed Critical Petratto SRL
Priority to EP07254414A priority Critical patent/EP2058258B1/de
Priority to AT07254414T priority patent/ATE479622T1/de
Priority to DE602007008911T priority patent/DE602007008911D1/de
Publication of EP2058258A1 publication Critical patent/EP2058258A1/de
Application granted granted Critical
Publication of EP2058258B1 publication Critical patent/EP2058258B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65H45/14—Buckling folders
    • B65H45/142—Pocket-type folders
    • B65H45/147—Pocket-type folders folding rollers therefor

Definitions

  • the present invention relates to a paper-folding station for sheets of paper generally used for assemblying books, magazines, depliants, and the like.
  • a paper-folding station generally comprises one or more folding units each having a triad of rollers arranged in square, two adjacent of which feed the sheet into a thin chamber, known as “pocket” or “buckle”, having an adjustable thickness, with an inlet mouth and an adjustable transversal barrier which cause the sheets to stop and to bend into the shape of a groove below the inlet mouth.
  • the groove progressively lengthens up to meet two adjacent folding rollers of the triad, which pinch the bottom of the groove and form the fold on the sheet.
  • the inlet mouth of the buckle is delimited between a lower profile, which must be as near as possible to, and along the tangent of, the outer folding roller, and an upper profile which also functions as a guide for a correct formation of the groove on the sheet. Since an accurate positioning of the profiles with respect to the rollers is critical for achieving an accurate and regular fold, as well as for reducing the risk of jamming, in the known paper-folding stations an accurate construction and assemblying of the buckle is required, which buckle, consequently, is very fragile to use as well as expensive to manufacture, also because it must be made movable and removable from the structure of the machine which supports the folding rollers, in order to allow the operator either to carry out the required adjusments or to remedy any jamming of the paper.
  • a paper-folding station 10 comprises a frame 11 supporting a motorized conveyor belt 12 extending between two pulleys 13a, 13b and arranged to feed sheets of paper such as F to a folding buckle 16, which will be better described below.
  • a triad of parallel, adjacent rollers arranged in square are supported at the delivery end of conveyor belt 12.
  • a first roller 18 is supported about a first transverse axis A1 at the delivery end of conveyor belt 12 for receiving sheets from it.
  • a second roller 20 parallel to first roller 18 is supported above the latter on a first swinging support 22 that is pivoted about a second transverse axis A2.
  • first swinging support 22 is adjustable by a threaded knob 24 acting against a spring 26 in order to change the distance between the first roller and the second roller.
  • a third roller 28 is supported at a position diametrically opposed to conveyor belt 12 with respect to first roller 18, on a second swinging support 30 pivoted about a third transverse axis A3.
  • the angular position of second swinging support 30 is also adjustable by a threaded knob 32 acting against a spring 34 in order to change the distance between the first roller and the third roller.
  • An idle gearwheel 36 transmits the motion from a driving gearwheel 13h, which is integral with delivery pulley 13b of conveyor belt 12, to first roller 18, which has a respective gearwheel (not shown) meshing with idle gearwheel 36, at one of its ends.
  • Second roller 20 and third roller 28 also have respective gearwheels integral with them, such as 20a with reference to second roller 20, which mesh with the gearwheel of the first roller.
  • Folding buckle 16 comprises a first array of longitudinal, parallel bars 38 defining a lower sliding surface and interconnected by a first pair of transverse rods 40, 42, as well as a second array of longitudinal, parallel bars 44 arranged above the first bars and interconnected by a second pair of tranverse rods 46, 48 to define an upper sliding surface.
  • Transverse rods 40, 42 supporting the lower bars are connected to transverse rods 46, 48 supporting the upper bars via threaded tie rods such as 49 with respective nuts 49a, with interposition of respective springs 49b. Therefore, a thin gap H is defined between the upper sliding surface and the lower sliding surface, with a mouth I ( Fig. 3 ) through which the sheets to be folded are insertable. The thickness of the gap is manually adjustable by operating tie rods 49.
  • the transverse rods supporting the lower bars are mounted on a pair of longitudinal members 50, 52 lying on respective slanting guides 54, 56 which are attached to frame 11 and are locked in position by respective locking knobs 58, 60.
  • the longitudinal position of longitudinal members 50, 52 with respect to guides 54, 56 is accurately adjustable by means of a pair of respective adjusting screws 62, 64, which are screwed to respective projections 66, 68 integral with the longitudinal members and arranged to abut against guides 54, 56 in a longitudinal direction.
  • a rod 69 parallel to the bars is anchored, along which a slide 69a is slidable.
  • Slide 69a supports an array of parallel bands 70 projecting into the intervals between the bars to define a barrier for the sheet entering the buckle.
  • Slide 69a is lockable in position by a respective threaded locking knob 72.
  • first swinging support 22 and second swinging support 30 bear respective transverse beams 74, 76 ( Fig. 3 ) which partially surround the respective rollers and have respective, mutually facing plane surfaces 74a, 76a having a thin passage defined therebetween, with an inlet section at the level of the line of tangency between first roller 18 and second roller 20, and an outlet section leading to mouth I of folding buckle 16.
  • Beams 74, 76 are arranged obliquely so that the thin passage defined therebetween substantially has the same slant of buckle 16.
  • conveyor belt 12 feeds sheets of paper to first roller 18 and second roller 20, which draw the sheets and convey them to the folding buckle via the slanting passage defined between upper beam 74 and lower beam 76, which accurately guide the insertion of the sheets into the buckle.
  • each sheet is deviated by lower beam 76 to enter the mouth I defined between lower bars 38 and upper bars 44. The sheet moves forward until it abuts against the barrier defined by the bands 70, then it starts to bend into the shape of a groove D below inlet mouth I ( Fig. 6 ).
  • Fig. 5 each sheet is deviated by lower beam 76 to enter the mouth I defined between lower bars 38 and upper bars 44. The sheet moves forward until it abuts against the barrier defined by the bands 70, then it starts to bend into the shape of a groove D below inlet mouth I ( Fig. 6 ).
  • groove D progressively lengthens until it is pinched between first roller 18 and third roller 28 which form the tranverse fold on the sheet.
  • the position of the beams with respect to the rollers is defined in the designing stage by a person skilled in the art in order to definitively optimize the insertion of the sheet and the formation of the groove, when the sheet is biased against the upper beam. Thereafter, no other adjustments are required, because whenever the distance either between first roller 18 and second roller 20 or between first roller 18 and third roller 28 must be adjusted by operating knobs 24 or 32, the beams will integrally follow the movements of the respective rollers, thereby maintaining the correct relative position with respect to the rollers. Of course, any removal and reinstalling of the buckle for adjustments or jamming does not affect the accuracy of the insertion of the sheets and of the formation of the groove.
  • the buckle With the paper-folding station according to the invention, only the distance between the upper surface and the lower surface, as well as the position of the barrier, can be adjusted in the buckle, which adjustments, as mentioned above, are coarse and consequently are not affected by inaccuracies of positioning and of assembling of the buckle. Accordingly, since the tolerances of manufacturing and of positioning of the buckle are less restrictive, the buckle can be manufactured in a way less expensive then the conventional buckles.
  • the station according to the invention could be provided with a plurality of folding buckles arranged to perform a number of parallel folds on the sheets, in a way that will be obvious to a person skilled in the art.
  • both the rollers mounted on swinging supports are provided with respective beams, a considerable improvement could be achieved by providing only one of the rollers with a beam.
  • swinging supports could also be replaced with other movable supports of a different type, for instance, supports mounted on rectilinear guides, provided that they allow the distance between the respective rollers and first roller 18 to be accurately adjusted.
  • the beams could also be mounted on respective dedicated supports designed to follow the movements of the respective rollers.

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Claims (6)

  1. Papierfaltstation (10), die umfasst:
    - ein Gestell bzw. einen Rahmen (11),
    - eine Papierzuführung (12),
    - ein erstes Paar motorisierter, im Wesentlichen benachbarter Walzen (18, 20), die an dem Ausgabeende der Papierzuführung (12) um jeweilige parallele Achsen gelagert sind, um Papierblätter aus der Zuführung (12) zu ziehen, wobei eine Walze (20) des ersten Paars auf ein erstes Auflager (22) montiert ist, das in der Position einstellbar ist, um den Abstand zwischen den Walzen des ersten Paars zu ändern,
    - ein Taschenfalzwerk (16), das eingerichtet ist, um die Blätter von dem ersten Paar Walzen (18, 20) durch eine Einlassmündung (I) zu erhalten, und das eine Barriere (70) hat, um zu bewirken, dass die Blätter anhalten und unter der Einlassmündung in die Form einer Nut gebogen werden,
    - ein zweites Paar motorisierter, im Wesentlichen benachbarter Walzen (18, 28), die nahe der Einlassmündung (I) um jeweilige parallele Achsen gelagert sind, um die Nut (D) einzuklemmen und eine Querfaltung auf dem Blatt zu machen, wobei eine Walze (28) des zweiten Paars auf ein zweites Auflager (30) montiert ist, das in der Position einstellbar ist, um den Abstand zwischen den Walzen des zweiten Paars zu ändern,
    dadurch gekennzeichnet, dass sie wenigstens einen Querbalken (74, 76) umfasst, der verbunden ist, um den Positionsänderungen eines jeweiligen des ersten Lagers (22) und des zweiten Lagers (30) zu folgen, und der eingerichtet ist, um das Blatt nahe der Einlassmündung (I) zu führen.
  2. Papierfaltstation nach Anspruch 1, dadurch gekennzeichnet, dass der wenigstens eine Querbalken (74, 76) integral mit dem jeweiligen Auflager (22, 30) verbunden ist.
  3. Papierfaltstation nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass ein Querbalken (74), der mit dem ersten Auflager (22) verbunden ist, eingerichtet ist, um das Biegen des Blatts während der Bildung der Nut zu steuern, wodurch die korrekte Geometrie der Nut definiert wird.
  4. Papierfaltstation nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass ein mit dem zweiten Auflager (30) verbundener Querbalken (76) eingerichtet ist, um das Einbringen des Blatts in das Falzwerk zu führen.
  5. Papierfaltstation zur nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass sowohl das erste Auflager (22) als auch das zweite Auflager (30) jeweilige Querträger (74, 76) integral mit sich tragen, zwischen welchen ein dünner Durchgang mit einem Einlassabschnitt nahe dem ersten Paar von Walzen (18, 20) und einem zu der Mündung (I) führenden Auslassabschnitt definiert ist.
  6. Papierfaltstation nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass wenigstens eines der in der Position einstellbaren Auflager unter der Wirkung eines Knopfs (32), der gegen elastische Mittel (34) wirkt, schwenkbar an dem Rahmen (11) gelagert ist.
EP07254414A 2007-11-09 2007-11-09 Papierfaltstation Not-in-force EP2058258B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP07254414A EP2058258B1 (de) 2007-11-09 2007-11-09 Papierfaltstation
AT07254414T ATE479622T1 (de) 2007-11-09 2007-11-09 Papierfaltstation
DE602007008911T DE602007008911D1 (de) 2007-11-09 2007-11-09 Papierfaltstation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07254414A EP2058258B1 (de) 2007-11-09 2007-11-09 Papierfaltstation

Publications (2)

Publication Number Publication Date
EP2058258A1 EP2058258A1 (de) 2009-05-13
EP2058258B1 true EP2058258B1 (de) 2010-09-01

Family

ID=39253854

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07254414A Not-in-force EP2058258B1 (de) 2007-11-09 2007-11-09 Papierfaltstation

Country Status (3)

Country Link
EP (1) EP2058258B1 (de)
AT (1) ATE479622T1 (de)
DE (1) DE602007008911D1 (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1066398A (en) * 1965-05-28 1967-04-26 Timsons Ltd An improved folder
DE9214625U1 (de) * 1992-10-28 1992-12-17 Mathias Bäuerle GmbH, 7742 St Georgen Stauchfalzmaschine mit einstellbaren oder beweglich gelagerten Walzen
EP1321411B1 (de) * 2001-12-11 2005-05-11 MASCHINENBAU OPPENWEILER BINDER GmbH & Co. KG Verfahren zur Einstellung der Falzspaltenweite mehrerer Falzwalzenpaare.

Also Published As

Publication number Publication date
EP2058258A1 (de) 2009-05-13
ATE479622T1 (de) 2010-09-15
DE602007008911D1 (de) 2010-10-14

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