EP0017204A1 - Dispositif pour le pliage de feuilles de papier ou analogues - Google Patents

Dispositif pour le pliage de feuilles de papier ou analogues Download PDF

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Publication number
EP0017204A1
EP0017204A1 EP80101697A EP80101697A EP0017204A1 EP 0017204 A1 EP0017204 A1 EP 0017204A1 EP 80101697 A EP80101697 A EP 80101697A EP 80101697 A EP80101697 A EP 80101697A EP 0017204 A1 EP0017204 A1 EP 0017204A1
Authority
EP
European Patent Office
Prior art keywords
folding
rollers
sheet
pair
sections
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Withdrawn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
EP80101697A
Other languages
German (de)
English (en)
Inventor
Hans-Werner Radtke
Wilfried Weller
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.)
Meteor Siegen Apparatebau Paul Schmeck GmbH
Original Assignee
Meteor Siegen Apparatebau Paul Schmeck GmbH
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 Meteor Siegen Apparatebau Paul Schmeck GmbH filed Critical Meteor Siegen Apparatebau Paul Schmeck GmbH
Publication of EP0017204A1 publication Critical patent/EP0017204A1/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Withdrawn legal-status Critical Current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
    • B65H45/18—Oscillating or reciprocating blade folders

Definitions

  • the invention relates to a device for folding sheets or the like, with a transport device guiding the sheets in a transport path, with a pair of folding rollers at a predetermined distance on one side of the transport path, and with a folding knife aligned with the folding gap of the pair of folding rollers on the other Side of the transport path that touches the sheet at a desired fold line and guides it against the fold gap.
  • Such a device is known from DE-PS 21 862, in which a sheet of paper or the like is transported to a pair of folding rollers and is touched by a folding knife on the folding line and pushed into the folding gap of the pair of folding rollers until it is pushed in until the stationary rollers of the folding roller pair transport the sheet through the gap and fold it. Since the folding rollers exert a constant folding pressure throughout the passage of the sheet, the inevitable inhomogeneities in the surface of the folding rollers and within the sheet lead to the formation of undesirable folds on the sheet which irregularly obliquely outwards to the free edges of the arch run to so-called Christmas trees, which greatly reduce the appearance of the folded arch and a proper Ge or prevent further processing of the folded sheet.
  • the object of the invention is therefore to raise a device of the type mentioned in the introduction, in which the formation of undesired folds running towards the edges of the sheet to be folded is reliably avoided in a simple and reliable manner.
  • a roller of the pair of folding rollers includes a folding section and a release section in the circumferential direction, and that the folding knife assumes the position in front of the folding gap when the front edge of the folding section runs past the folding knife against the other roller and the sheet in the taking forming gap.
  • the fold section has a predetermined, preferably the full radius of the roller, and the release section has a radius that is reduced compared to the fold section.
  • the front edge of the folding section first passes the folding knife - taking the sheet fed in - against the cylindrical second roller and then forms the folding gap, under a predetermined pressure, while rolling on the second roller the sheet is folded.
  • the release section then rotates past the cylindrical second roller, as a result of which the two rollers due to the reduced radius of the release section. are completely disengaged. In this way, the contact pressure required for folding and exerted on the sheet to be folded becomes only. exercised during the rolling of the folding section.
  • the folded sheet can then be transported freely by any conveyor through the pair of folding rollers, thereby preventing the generation of undesirable folds which run obliquely with respect to the outer edges and the rear edge in the case of rollers which are mounted in a stationary manner.
  • both rollers of the pair of folding rollers are stepped in the circumferential direction into a folding section and its release section.
  • the two rollers then run synchronously in such a way that the fold sections and then the release sections rotate simultaneously opposite each other between the rollers.
  • This symmetrical design of the two folding rollers ensures a symmetrical, particularly trouble-free insertion of the sheets into the folding gap.
  • the fold sections and the release sections have essentially the same radius.
  • the fold sections consist of a relatively hard material
  • the release sections consist of a relatively soft-elastic material, for example soft rubber or foam.
  • the front edge of the folding section passes the folding knife - taking the sheet fed in - against the cylindrical or likewise stepped second roller and forms the folding gap in which the sheet is folded under the predetermined pressure during rolling on the second roller becomes.
  • the release section or sections then come into contact with the continuous sheet.
  • the pressure then exerted on the sheet is dependent on the material of the release sections and should be such that the folded sheet is guided in the direction of sheet travel and is thereby reliably transported by the force transmitted by the release section.
  • This embodiment of the invention is particularly advantageous when the length of the sheets passing through the pair of folding rollers in the folded state is smaller than the circumference of the folding rollers, since it is then ensured that the relatively heavily stressing folding sections do not act repeatedly against the sheet.
  • both rollers preferably have a circumferential edge zone with a full radius on at least one edge side, in order to be able to drive the idling second roller over these edge zones without slippage.
  • spur gears meshing with one another can also be provided on at least one edge side for positive, synchronous driving of both rollers.
  • the fold section of one or both of the rollers is made of a relatively hard, elastic material, e.g. hard rubber to homogenize the contact pressure and create a minimum static friction on the surface of the fold section.
  • a pair of transport rollers is preferably arranged behind the pair of folding rollers.
  • the circumferential angle of the fold sections is dimensioned such that the fold sections only disengage when the fold line of the sheet enters the nip of the transport roller pair and is transported further by the transport roller pair under a lower contact pressure.
  • This measure advantageously transports and folds the sheet essentially from two separate pairs of rollers, the contact pressure and other properties of which can be adjusted to the corresponding function.
  • the pair of folding rollers can also be followed by any other suitable and known transport device which feeds the folded sheet emerging from the folding nip to its further determination.
  • the linear feed movement of the folding knife and the rotational movement of the pair of folding rollers can advantageously be derived from a common drive.
  • a common drive e.g. B.
  • the blunt end of the folding knife is arranged eccentrically on a drive pulley connected to the drive, and the front end of the folding knife runs back and forth in a sliding guide.
  • the rotary movement of the pair of folding rollers and the drive disk of the folding knife are controlled after one revolution by a single-speed clutch interrupted between the working cycles of the device. A new work cycle begins as soon as a new sheet has been transported between the folding knife and the folding nip.
  • one of the rollers of the pair of folding rollers is resiliently mounted, so that the folding gap can flexibly adapt to thickness and material fluctuations within the sheet to be folded.
  • one of the transport rollers can also be spring-mounted.
  • adjustable stops are provided, which stop the transport movement of the sheets when a preselected folding line of the sheet lies in the plane spanned by the folding knife and folding gap.
  • the ends of the sheet during the approach to the fold gap are preferably adjusted in such a way that the fold line of the sheet rests resting on the tip of the folding knife during the movement of the folding knife.
  • the extended stop against which the front end of the sheet runs can be pushed back along the transport path in synchronism with the feed movement of the folding knife against the folding knife at the appropriate speed.
  • the other end of the sheet guided by the folding knife against the folding gap can be pushed in similarly also track to ensure that the fold line does not move on the tip of the folding knife.
  • the figure shows a schematic side view of the device according to the invention, which is partially shown in section.
  • a pair of folding rollers 2, 4 is arranged at a predetermined distance on one side of a transport path which is formed by the support plane of a plurality of transport rollers 42, 44, 46 of a transport device 40. Sheets of paper or the like are moved along the transport path until their front end runs against an extendable stop 48, the distance of which from the plane of the folding nip 14 can be adjusted according to the position of the desired folding line.
  • a folding knife 16 is arranged in alignment with the folding gap 14, which starts with the tip 18 in a feed movement against the folding line of a sheet 3 stopped by the stop 48 and guides the folding line against the folding gap 14 .
  • Both rollers 2, 4 of the pair of folding rollers have a folding section 10 or 12 with a full radius in the circumferential direction, and a release section 6 or 8 with a reduced radius. Both rollers 2, 4 have peripheral edge zones 5 and 7, which have a full radius, on the front edges.
  • the folding section 10, 12 of both rollers 2, 4 consists of an elastic material. The bearing of a roller 2 of the pair of folding rollers 2, 4 is pressed into its normal position by means of a spring 30, which is characterized by the smallest possible distance between the axes of the two rollers.
  • the fold sections 10, 12 of the two rolls 2, 4 both have the same arc length and are arranged on the circumference of the rolls in such a way that their front edges 11, 13, which first enter the fold gap 14, come into engagement and then the fold sections 10, 12 roll on one another and thereby generate the nip 14 with a predetermined contact pressure.
  • the two release sections 6, 8 of the rolls 2, 4 then pass between the rolls and create an intermediate space between the rolls which has a predetermined clear width and a pressure-free passage the ends of the bow are guaranteed by the pair of folding rollers.
  • a pair of transport rollers 32 is provided, one roller of which is spring-mounted by means of a spring 34.
  • the circumferential arc of the folding sections 10, 12 and the distance of the transport roller pair from the folding roller pair are coordinated with one another such that the folding line of the sheet transported by the folding sections 10, 12 through the folding gap 14 is taken over by the transport roller pair 32 and transported further before the folding sections 10, 12 disengage.
  • the rear end 22 of the folding blade 16 is eccentrically connected to a drive pulley coupled to a drive 20, and the front end of 'the chopper blade 16 performs a sliding guide 24 in a reciprocating motion out.
  • a drive (not shown) drives one of the rollers, for example roller 4, which drives the other roller via the edge zones 5, 7 or corresponding spur gears, and the drive disk 20 synchronously via a single-speed clutch.
  • the feed movement of the folding knife 16 and the rotary movement of the rollers 2, 4 are coordinated with one another in such a way that the folding knife 16 assumes the position advanced most against the folding gap 14 when the leading edges 11, 13 of the folding sections 10, 12 run past the folding knife 16 and take the sheet with it in the fold gap formed between the fold sections 10, 12.
  • the single-turn clutch couples the pair of folding rollers 2, 4 and the folding blade 16 from the drive between the individual working cycles until a new sheet has been transported along the transport path in front of the pair of folding rollers 2, 4.
  • the stop 48 and a stop 48 corresponding to the stop on the other side of the folding knife 16 can be synchronized with to move the movement of the folding knife 16 onto the folding knife 16 in order to suitably track the ends of a sheet to be folded.
  • the sheet folded by the pair of folding rollers 2, 4 and folded after passing through the pair of transport rollers 32 can be folded again parallel or perpendicular to the first folding line, depending on the orientation of the corresponding pair of folding rollers.
  • the second one So-called packet folding can be carried out with the device according to the invention without the formation of undesired oblique folds or kinks.
  • the release sections 6, 8 can alternatively also be formed with a full radius and made of a relatively soft, elastic material, e.g. soft rubber or foam. During the passage of the release sections through the fold gap, a relatively small contact pressure is then exerted on the folded sheet, which is sufficient to safely and reliably transport the folded sheet in the sheet passage plane.
  • the pair of transport rollers 32 can then be omitted.

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
EP80101697A 1979-03-30 1980-03-29 Dispositif pour le pliage de feuilles de papier ou analogues Withdrawn EP0017204A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792912839 DE2912839A1 (de) 1979-03-30 1979-03-30 Vorrichtung zum falzen von bogen aus papier o.dgl.
DE2912839 1979-03-30

Publications (1)

Publication Number Publication Date
EP0017204A1 true EP0017204A1 (fr) 1980-10-15

Family

ID=6067005

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80101697A Withdrawn EP0017204A1 (fr) 1979-03-30 1980-03-29 Dispositif pour le pliage de feuilles de papier ou analogues

Country Status (2)

Country Link
EP (1) EP0017204A1 (fr)
DE (1) DE2912839A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0498168A1 (fr) * 1991-01-18 1992-08-12 Eastman Kodak Company Dispositif pour pliage de feuilles
DE102013111838A1 (de) 2013-10-28 2015-04-30 Innovative Card Systems GmbH Falzmodul für Papierbögen, das Falzmodul aufweisende Falzvorrichtung und Verfahren zum Falzen von Papierbögen
CN106516304A (zh) * 2016-12-09 2017-03-22 叶淦和 一种衣服对折装置
CN110697487A (zh) * 2019-10-22 2020-01-17 江苏阳光股份有限公司 一种毛纺面料加工用折叠机构

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3836342A1 (de) * 1988-10-25 1990-04-26 Wifag Maschf Vorrichtung zur herstellung eines zusaetzlichen falzes in falzapparaten von rotationsdruckmaschinen
DE19611788C2 (de) * 1996-03-12 1999-11-11 Francotyp Postalia Gmbh Anordnung zum Falzen von Bögen
DE102018116946A1 (de) * 2018-07-12 2020-01-16 Manroland Goss Web Systems Gmbh Falzvorrichtung

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE21862C (de) * KOENIG & BAUER in Kloster Oberzell bei Würzburg Neuerung an der Falzvorrichtung bei Rotations-Maschinen
DE363709C (de) * 1919-11-12 1922-11-13 Paul Grothe Falzmaschine mit unter oder an der Falzstelle liegenden Foerderwalzen
DE7243308U (de) * 1973-03-22 Frankenthal A Ag Falzwalzen im Falzapparat von Rotationsdruckmaschinen
DE2225061A1 (de) * 1972-05-23 1973-12-06 Will E C H Fa Falzvorrichtung
US3788638A (en) * 1971-01-29 1974-01-29 Baeuerle Gmbh Mathias Roller arrangement, in particular for paper folding, creasing and like machines
US3841621A (en) * 1973-06-05 1974-10-15 Automecha Ltd Apparatus for folding long webs or sheets of material
DD111871A1 (fr) * 1973-11-23 1975-03-12
DE2611820A1 (de) * 1975-03-24 1976-10-14 Rockwell International Corp Insbesondere in verbindung mit rotations-schnelldruck-pressen verwendbare faltvorrichtung

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE21862C (de) * KOENIG & BAUER in Kloster Oberzell bei Würzburg Neuerung an der Falzvorrichtung bei Rotations-Maschinen
DE7243308U (de) * 1973-03-22 Frankenthal A Ag Falzwalzen im Falzapparat von Rotationsdruckmaschinen
DE363709C (de) * 1919-11-12 1922-11-13 Paul Grothe Falzmaschine mit unter oder an der Falzstelle liegenden Foerderwalzen
US3788638A (en) * 1971-01-29 1974-01-29 Baeuerle Gmbh Mathias Roller arrangement, in particular for paper folding, creasing and like machines
DE2225061A1 (de) * 1972-05-23 1973-12-06 Will E C H Fa Falzvorrichtung
US3841621A (en) * 1973-06-05 1974-10-15 Automecha Ltd Apparatus for folding long webs or sheets of material
DD111871A1 (fr) * 1973-11-23 1975-03-12
DE2611820A1 (de) * 1975-03-24 1976-10-14 Rockwell International Corp Insbesondere in verbindung mit rotations-schnelldruck-pressen verwendbare faltvorrichtung

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0498168A1 (fr) * 1991-01-18 1992-08-12 Eastman Kodak Company Dispositif pour pliage de feuilles
DE102013111838A1 (de) 2013-10-28 2015-04-30 Innovative Card Systems GmbH Falzmodul für Papierbögen, das Falzmodul aufweisende Falzvorrichtung und Verfahren zum Falzen von Papierbögen
WO2015062583A2 (fr) 2013-10-28 2015-05-07 Innovative Card Systems GmbH Module de pliage de feuilles de papier, dispositif de pliage comportant le module de pliage et procédé de pliage de feuilles de papier
WO2015062583A3 (fr) * 2013-10-28 2015-07-30 Innovative Card Systems GmbH Module de pliage de feuilles de papier, dispositif de pliage comportant le module de pliage et procédé de pliage de feuilles de papier
CN106516304A (zh) * 2016-12-09 2017-03-22 叶淦和 一种衣服对折装置
CN106516304B (zh) * 2016-12-09 2018-12-07 新诚达时装（安徽）有限公司 一种衣服对折装置
CN110697487A (zh) * 2019-10-22 2020-01-17 江苏阳光股份有限公司 一种毛纺面料加工用折叠机构

Also Published As

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DE2912839A1 (de) 1980-10-16

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): FR GB NL

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19811118

RIN1 Information on inventor provided before grant (corrected)

Inventor name: WELLER, WILFRIED

Inventor name: RADTKE, HANS-WERNER