EP0379712A1 - Dispositif de pliage en accordéon d'une bande de papier - Google Patents

Dispositif de pliage en accordéon d'une bande de papier Download PDF

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Publication number
EP0379712A1
EP0379712A1 EP89123624A EP89123624A EP0379712A1 EP 0379712 A1 EP0379712 A1 EP 0379712A1 EP 89123624 A EP89123624 A EP 89123624A EP 89123624 A EP89123624 A EP 89123624A EP 0379712 A1 EP0379712 A1 EP 0379712A1
Authority
EP
European Patent Office
Prior art keywords
paper web
folding
guide
folding roller
guide members
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.)
Granted
Application number
EP89123624A
Other languages
German (de)
English (en)
Other versions
EP0379712B1 (fr
Inventor
Edwin Straub
Werner Schmidlin
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.)
Faltex AG
Original Assignee
Faltex 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 Faltex AG filed Critical Faltex AG
Publication of EP0379712A1 publication Critical patent/EP0379712A1/fr
Application granted granted Critical
Publication of EP0379712B1 publication Critical patent/EP0379712B1/fr
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
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/20—Zig-zag 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
    • 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
    • B65H2701/11—Dimensional aspect of article or web
    • B65H2701/112—Section geometry
    • B65H2701/1123—Folded article or web
    • B65H2701/11231—Fan-folded material or zig-zag or leporello

Definitions

  • the present invention relates to a device for zigzag-shaped folding of a paper web according to the preamble of claim 1.
  • Such a device is known for example from DE-PS 21 34 898.
  • the paper web to be folded is guided against this surface through the backstop provided in the feeder in a plane which is approximately at right angles to a circumferential surface.
  • the leading edge region of the paper web is deflected in the circumferential direction and fed to a first folding nip formed by this surface and a folding roller.
  • a further folding roller is provided symmetrically with respect to the plane mentioned, which also forms a folding gap together with the surface.
  • the paper web that is prevented from moving back against the feed direction by means of the backstop is bulged out in the area between the surface and the two folding rollers and in the front folding nip in the circumferential direction to form a new one Fold introduced.
  • the surface is driven further in the same direction of rotation in order to convey the completely folded paper web out of the corresponding folding gap.
  • the paper web is aligned with its lateral edge on a ledge before insertion, it is not ensured that the paper web is drawn in a straight direction into the first nip and thus the subsequent folds take place exactly at right angles to the lateral edge of the paper web . It is conceivable that the leading edge section of the paper web is deformed, for example as a result of different moisture levels or due to storage on rolls, and the leading edge of the paper web is therefore not simultaneously covered over the entire width of the paper web by the surface and the relevant folding roller and into the Fold gap is drawn. This can lead to a one-sided tension in the paper web, so that its longitudinal direction no longer runs exactly in the feed direction.
  • the introduction of the paper web with the front edge in front into the upward folding gap is very difficult since the weight of the paper web counteracts. Furthermore, it can lead to problems in the known device if the trailing edge of the paper web comes to lie in the area between the backstop and the last active folding nip when the surface is last reversed in direction. After the reversal of direction, the paper web can, if necessary, retreat to the backstop, which can lead to a fold that is not precisely defined in its position and even runs at a steep angle.
  • this has the disadvantage that the folded paper web cannot be conveyed out of the device in any direction, and secondly, if there are small distances between successive folds after the last fold, an end section of the paper web that is longer than the distance between two remains adjacent folds, so that one last fold must be carried out by hand.
  • the passage formed by the one guide element and a folding roller aligns the leading edge section of the paper web over its entire width and guides the leading edge of the paper web into a first folding nip in a defined manner.
  • the guide elements, together with the folding rollers, form a guide channel in which the paper web is guided up to the inlet into the folding nip. It is therefore also easily possible to use the paper web with your insert the leading edge into a first upward nip.
  • the guide elements are moved in the respective direction of rotation of the surface towards the other end position. As a result, the bulged section of the paper web, guided in a defined manner, is brought into the area of the inlet of the next nip, which increases the accuracy of the folding.
  • the narrowed passage thus precisely guides the section of the paper web originating from the feed and also the section of the paper web lying between the surface and the guide members.
  • the folding device shown in the figures has a feed 10 with a feed channel 12 for the paper web 14 shown in dashed lines.
  • a backstop 16 is arranged in the end region of the feed channel 12.
  • the end of the feed channel 12 following on the one and on the other side of the backstop 16 arranged folding nips 18, 18 'are provided.
  • the end region of the feed channel 12 extends with respect to the drive cylinder 22 approximately in the radial direction and the two folding rollers 24, 24 'are approximately symmetrical to arranged by the end region of the feed channel 12 plane.
  • the drive cylinder 22 and the folding rollers 24, 24' limit a storage space designated by 26.
  • each guide member 28, 30 denote two guide members which have a plurality of parallel guide rails 32 which are spaced apart from one another in the axial direction of the drive cylinder 22 and are arranged in a computing manner.
  • the mutually directed free ends 34 of the guide rails 32 of the two guide members 28, 30 are spaced apart and lie on a line running parallel to the axis of rotation 36 of the drive cylinder 22.
  • the guide rails 32 of each guide member 28, 30 are fastened at their end regions 38 facing away from the free ends 34 to a support 40 running in the axial direction.
  • the two guide members 28, 30 can be moved together from a lower end position shown in FIGS. 1 and 3 to an upper end position shown in FIG. 2 and back again.
  • the guide rails 32 of the upper guide member 28 protrude into the storage space 26, and the free ends 34 together with the lower folding roller 24 delimit a passage 42 for the paper web 14 (see in particular FIG. 1).
  • the guide rails 32 of the lower guide member 30 are pulled out of the area of the storage space 26.
  • the guide rails 32 of the upper guide member 28 are pulled out of the storage space 26 and the passage 42 is now formed by the upper folding roller 24 'and the free ends 34 of the now extending into the storage space 26 guide rails 32 of the lower guide member 30.
  • the guide rails 32 extend in their free end regions approximately coaxially to the drive cylinder 22 and have on the side facing away from the drive cylinder 22 and the feed 10 side guide surfaces 44, which together with the outer surface of the folding roller 24, 24 ', with which they narrow the passage Form 42 for the paper web 14, enclose an acute angle ⁇ (Fig. 1).
  • the two folding rollers 24, 24 'and the guide surfaces 44 in question form a channel-shaped guide for the paper web 14.
  • each folding roller 24, 24 ' has a plurality of rollers 48 freely rotatably mounted on a respective folding roller shaft 46, 46', which are spaced apart in the axial direction and between which the guide rails 32 are guided.
  • the guide rails 32 run between the drive cylinder 22 and the relevant folding roller shaft 46, 46 '.
  • the folding roller shafts 46, 46 ' are arranged on pivot levers 50 which are biased against the drive cylinder 22 (Fig. 1 and 2).
  • a stop cam 52, 52 ' is provided with respect to the drive cylinder 22 approximately in the radial direction towards the outside, which defines the respective end position of the guide members 28, 30 together with the relevant folding roller shaft 46, 46'.
  • the drive cylinder 22 is seated in a rotationally fixed manner on a rotary shaft 60 which is freely rotatably mounted on side bearing plates 62.
  • a sprocket 64 also sits on the shaft 60 in a rotationally fixed manner, which does not connect to the sprocket via a chain 66 indicated by dash-dotted lines. shown drive is connected.
  • a holding member 68 is freely rotatably mounted on the shaft 60 in the area between the latter and the respective end shield 62.
  • Each holding member 68 has three holding arms 70, 70 'and 72 which run in the radial direction and are mutually offset by approximately 120 °, the free ends of which project in the radial direction beyond the drive cylinder 22.
  • the folding rollers 24, 24' and the feed 10 are arranged and at their end areas, the carrier 40 for the guide rails 32 of the guide members 28, 30 are attached.
  • the holding arms 72 have lugs 74 which are directed towards one another in their end regions and protrude into the region of the drive cylinder 22.
  • Recesses 76 extending in the radial direction are formed on them, in each of which a friction shoe 78 is guided, which is biased by means of a spring 80 against the surface 20 of the drive cylinder 22.
  • the backstop 16 has a plurality of conveyor rollers 82 arranged next to one another, of which only one is visible in FIGS. 1 and 2, which are connected to a freewheel which is effective in the feed direction Z.
  • freely rotatably mounted balls 84 are provided, which are biased in the direction against the conveyor rollers 82.
  • the feed channel 12 is delimited by upper and lower guide plates 86 which run parallel to one another and which have recesses 88 in the region of the backstop 16 for the conveyor rollers 82 and the balls 84.
  • the conveyor rollers 82 and balls 84 form a conveyor nip 90 for the paper web 14 guided in the feed channel 12.
  • the conveyor rollers 82 are driven for the introduction of the paper web 14 into the folding device. As soon as the leading edge section of the Pa pier web 14 is inserted into a first nip 18, the conveyor rollers 82 are no longer driven and only act as a backstop for the paper web 14th
  • a schematically illustrated sensor 92, 92 ' is provided, which are connected to a control device, not shown, which controls the drive for the drive cylinder 22 and the driving of the conveyor rollers 82.
  • These sensors 92, 92 ' for example light barriers, each emit a signal when the leading edge 94 of the paper web 14 passes beneath them.
  • the leading edge 94 of the paper web 14 is in the region of the second sensor 92 '.
  • the guide rails 32 together with the surface 20 of the drive cylinder 22 form a guide channel 96 for the paper web 14 on the side opposite the storage space 26 with respect to the relevant nip 18, 18 '.
  • the folder works as follows.
  • the paper web 14 to be folded is aligned on a table (not shown) in front of the feeder 10 with its side edge on a guide bar, as is known for example from DE-PS 21 34 898.
  • the paper web 14 is introduced into the feed channel 12 in the feed direction Z.
  • the sensor 92 detects the leading edge 94 of the paper web 14
  • the drive for the drive cylinder 22 is started, which is driven in the counterclockwise direction.
  • the holding members 68 likewise taken in a counterclockwise direction and the guide members 28, 30 pivoted into the lower end position, shown in FIG. 1.
  • the conveyor rollers 82 are also driven in the feed direction Z.
  • the leading edge 94 enters the conveying nip 90, whereupon the conveying rollers 82 and the balls 84 grip the paper web 14 and automatically convey it further in the feed direction Z.
  • the leading edge 94 enters the area between the two folding rollers 24, 24 'and is inserted in the storage space 26 through the guide surfaces 44 over its entire width into the tapered passage 42.
  • the passage 42 is formed by the upper, that is to say rear in the circumferential direction of the surface 20, guide member 28 and the lower, that is to say front, folding roller 24. Due to the acute angle ⁇ , the slit-shaped narrow passage 42 does not form an obstacle for the introduction of the paper web 14.
  • the leading edge section of the paper web 94 is deflected by the guide surfaces 44 in the direction toward the first folding nip 18 and is thus introduced into it in a defined manner.
  • the leading edge section of the paper web 14 is gripped by the surface 20 and the lower folding roller 24 and is conveyed against the guide channel 96 between the surface 20 and the guide rails 32 of the lower guide member 30.
  • This folding program now specifies to the drive of the drive cylinder 22 how far it is to be driven in one and in the other direction of rotation.
  • the drive cylinder 22 is braked and then driven clockwise.
  • the paper web 42 is pushed against the feed direction Z.
  • a backing of the paper web 14 is prevented by the backstop 16.
  • the portion of the paper web 14 located in the storage space 26 is bulged in the direction against the folding gap 18 '.
  • the holding members 68 are also carried along due to friction between the surface 20 and the friction shoes 78 in order to pivot the guide members 28, 30 into the upper end position shown in FIG.
  • the passage 42 is formed by the lower, that is, rear in the circumferential direction of the surface 20, guide member 30 and the upper, that is, front, folding roller 24 '. Due to the pivoting of the guide rails 32 of the lower guide member 30 into the storage space 26, the bulge of the paper web 14 is defined against the upper nip 18 ', wherein due to the inherent rigidity of the paper web 14, the two ends of the free ends 34 of the paper web 14 to Carrying on the surface 20 and the upper folding roller 24 'are created. The section of the paper web 14 which is bulged in this way passes into the folding gap 18 ', where the paper web 14 is folded for the first time.
  • the drive cylinder 22 is driven in the counterclockwise direction for conveying the fully folded paper web 14 out of the folding device through the lower guide channel 96.
  • the finished folded paper web 14 is located in the area of the upper nip 18 'and guide channel 96, as a result of the pivoting of the guide members 28, 30 into the lower end position of the part of the folded paper web which is now seen in the circumferential direction 14 in the area of the storage space 26 through the guide rails 32 of the upper guide member 28 in the direction of the lower folding gap 18 out. This prevents the formation of ears or the new bending of the end region of the paper web 14, even if the end of the paper web 14 is pushed in the direction against the folding gap 18 and is not pulled.
  • the folding rollers 24, 24 ' can be formed in one piece and with circumferential grooves through which the guide rails 32 are guided.
  • the stops and counter-stops can be provided at other locations for setting both end positions of the guide members 28, 30.
  • the conveyor rollers 82 are not driven.
  • the paper web 14 to be folded is to be pushed forward by hand until the leading edge region runs into a folding gap 18, 18 '.
  • the guide members 28, 30 only develop their full effect when the paper web 14 to be folded is inserted and the finished paper web 14 is carried out from the folding device.

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
EP89123624A 1989-01-25 1989-12-21 Dispositif de pliage en accordéon d'une bande de papier Expired - Lifetime EP0379712B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH223/89 1989-01-25
CH22389 1989-01-25

Publications (2)

Publication Number Publication Date
EP0379712A1 true EP0379712A1 (fr) 1990-08-01
EP0379712B1 EP0379712B1 (fr) 1994-03-09

Family

ID=4182086

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89123624A Expired - Lifetime EP0379712B1 (fr) 1989-01-25 1989-12-21 Dispositif de pliage en accordéon d'une bande de papier

Country Status (5)

Country Link
US (1) US5047003A (fr)
EP (1) EP0379712B1 (fr)
JP (1) JPH0780620B2 (fr)
DE (1) DE58907187D1 (fr)
ES (1) ES2049801T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0590359A1 (fr) * 1992-09-30 1994-04-06 Vittorio Garrone Machine pour plier des feuilles de papier
EP1842818A1 (fr) * 2006-04-07 2007-10-10 Océ-Technologies B.V. Procédé et appareil pour plier un support

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6176068B1 (en) 1998-04-23 2001-01-23 Bki Holding Corporation Packaging a strip of material in layers with intervening splices
US6321511B1 (en) 1988-05-20 2001-11-27 Bki Holding Corporation Packaging a strip of material with compression to reduce volume
US5967963A (en) * 1996-11-26 1999-10-19 Grapha-Holding Ag Apparatus for folding paper sheets
US6729471B2 (en) 1997-06-16 2004-05-04 Bki Holding Corporation Packaging a strip of material with compression to reduce volume
US6263814B1 (en) 1997-07-08 2001-07-24 Bki Holding Corporation Strip of material with splices and products formed therefrom
US6336307B1 (en) 1997-10-09 2002-01-08 Eki Holding Corporation Method of packaging a strip of material for use in cutting into sheet elements arranged end to end
FI110681B (fi) 1998-01-02 2003-03-14 Bki Holding Corp Menetelmä rainan pakkaamiseksi
DE19860070A1 (de) * 1998-12-23 2000-06-29 Stahl Gmbh & Co Maschf Taschenfalzwerk und Verfahren zur Registerregelung eines Taschenfalzwerks
US6293075B1 (en) 1999-03-08 2001-09-25 Bki Holding Corporation Packaging a strip of material
US6321512B1 (en) 1999-03-08 2001-11-27 Bki Holding Corporation Method of packaging a strip of material
WO2002076865A1 (fr) * 2001-03-23 2002-10-03 Bki Holding Corporation Emballage d'une bande de materiau de largeur variable
US20110039677A1 (en) * 2009-08-13 2011-02-17 Howard Carter Pleated paper towel stack and method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1934292A1 (de) * 1969-06-16 1971-01-14 Polygraph Leipzig Einschlagvorrichtung in Taschenfalzmaschinen
FR2101582A5 (fr) * 1970-07-14 1972-03-31 Roda Donato
FR2348883A1 (fr) * 1976-04-22 1977-11-18 Faltex Handels Ag Dispositif pour plier en accordeon de facon continue une bande de materiau
EP0037650A1 (fr) * 1980-03-31 1981-10-14 HARPER & TUNSTALL LIMITED Machines à plier en accordéon

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3724838A (en) * 1970-07-31 1973-04-03 V Orlovsky Sheet folding apparatus and method
US3747917A (en) * 1971-07-12 1973-07-24 Faltex Falzmaschinenfab Ag Machine for making concertina folds with reversible rollers and means for reversing same
US3712610A (en) * 1971-09-02 1973-01-23 V Garrone Automatic pleating machines
US4484905A (en) * 1980-03-31 1984-11-27 Harper & Tunstall Limited Zig-zag folding machines
US4601695A (en) * 1984-04-06 1986-07-22 Fausto Pazzi Machine and method for the automatic folding of cloths
JPH0694333B2 (ja) * 1986-06-19 1994-11-24 株式会社サン精機製作所 シ−ト折り畳み装置
JPH0641345B2 (ja) * 1986-11-26 1994-06-01 株式会社サン精機製作所 シ−ト折り畳み装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1934292A1 (de) * 1969-06-16 1971-01-14 Polygraph Leipzig Einschlagvorrichtung in Taschenfalzmaschinen
FR2101582A5 (fr) * 1970-07-14 1972-03-31 Roda Donato
FR2348883A1 (fr) * 1976-04-22 1977-11-18 Faltex Handels Ag Dispositif pour plier en accordeon de facon continue une bande de materiau
EP0037650A1 (fr) * 1980-03-31 1981-10-14 HARPER & TUNSTALL LIMITED Machines à plier en accordéon

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0590359A1 (fr) * 1992-09-30 1994-04-06 Vittorio Garrone Machine pour plier des feuilles de papier
EP1842818A1 (fr) * 2006-04-07 2007-10-10 Océ-Technologies B.V. Procédé et appareil pour plier un support

Also Published As

Publication number Publication date
JPH0780620B2 (ja) 1995-08-30
DE58907187D1 (de) 1994-04-14
ES2049801T3 (es) 1994-05-01
US5047003A (en) 1991-09-10
EP0379712B1 (fr) 1994-03-09
JPH02261773A (ja) 1990-10-24

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