EP0017204A1 - Folding apparatus for paper sheets or the like - Google Patents

Folding apparatus for paper sheets or the like 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
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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.)
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Application number
EP80101697A
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German (de)
French (fr)
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
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Meteor Siegen Apparatebau Paul Schmeck GmbH
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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/en
Withdrawn legal-status Critical Current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.

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

Abstract

An apparatus for folding paper sheets or the like contains a conveying apparatus (40), which guides the paper sheets in a transport path. A folding-roller pair (2,4) is attached on the one side of the transport path at a predetermined spacing. On the other side of the transport path, a folding knife (16) is provided flush with the folding gap (14) of the folding-roller pair, which knife contacts the sheet (3) at a desired folding line and guides it against the folding gap. At least one roller of the folding-roller pair possesses in the circumferential direction a folding section (10, 12) and a release section (6,8). The movement of the folding knife is matched to the rotary movement of the rollers in such a way that the folding gap receives when the front edge (11, 13) of the folding section runs past the folding knife against the other roller and takes the sheet with it in the folding gap which is being formed. <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zum Falzen von Bogen od. dgl., mit einer die Bogen in einer Transportbahn führenden Transportvorrichtung, mit einem Falzwalzenpaar in vorgegebenem Abstand auf der einen Seite der Transportbahn, und mit einem mit dem Falzspalt des Falzwalzenpaares fluchtenden Falzmesser auf der anderen Seite der Transportbahn, das den Bogen an einer gewünschten Falzlinie berührt und diese gegen den Falzspalt führt.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.

Aus der DE-PS 21 862 ist eine derartige Vorrichtung bekannt, bei der ein Bogen aus Papier od. dgl. an ein Falzwalzenpaar heran-transportiert wird, und von einem Falzmesser an der Falzlinie berührt und in den Falzspalt des Falzwalzenpaars soweit hineingeschoben wird, bis die ortfest gelagerten Walzen des Falzwalzenpaars den Bogen durch den Falzspalt hindurch transportieren und dabei falzen. Da die Falzwalzen während des gesamten Durchlaufs des Bogens einen konstanten Falzdruck auf.den Bogen ausüben, kommt es aufgrund von unvermeidlichenInhomogenitäten in der Oberfläche der Falzwalzen sowie innerhalb des Bogens zur Bildung von unerwünschten Falten auf dem Bogen, die unregelmäßig schräg nach außen zu den freien Rändern des Bogens verlaufen, zu sogenannten Christbäumen, die das Aussehen des gefalzten Bogens stark vermindern und einen bestimmungsgemäßen Gebrauch oder eine Weiterverarbeitung des gefalzten Bogens verhindern.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.

Aus der US-PS 3 841 621 ist ebenfalls eine Vorrichtung der eingangs genannten Art bekannt, bei der die Walzen des Falzwalzenpaares nach einem unter Anpreßdruck durchlaufenden Umdrehungswinkel dadurch außer Eingriff gebracht werden, daß eine der Falzwalzen von der anderen, ortsfest gelagerten Falzwalze weg bewegt wird. Dadurch wird die Bildung zu den Rändern des Bogens hin verlaufender unerwünschter Querfalten beseitigt, da der zum Falzen benötigte Anpreßdruck nur sehr kurzzeitig auf den Bogen wirkt. Eine derartige Lösung ist jedoch konstruktiv mit einem erheblichen Aufwand verbunden.From US-PS 3 841 621 a device of the type mentioned is also known, in which the rollers of the folding roller pair are disengaged after a rotation angle passing under contact pressure in that one of the folding rollers is moved away from the other, fixedly mounted folding roller . This eliminates the formation of undesired transverse folds running towards the edges of the sheet, since the contact pressure required for folding only acts on the sheet for a very short time. Such a solution is structurally associated with considerable effort.

Aufgabe der Erfindung ist es daher, eine Vorrichtung der eingangs genannten Art anzuheben, bei der in einfacher und zuverlässiger Weise die Bildung von zu den Rändern des zu falzenden Bogens hin verlaufenden, unerwünschter Falten sicher vermieden wird.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.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß eine Walze des Falzwalzenpaares in Umfangsrichtung einen Falzabschnitt und einen Freigabeabschnitt enthält, und daß das Falzmesser die Stellung vor dem Falzspalt einnimmt, wenn die Vorderkante des Falzabschnitts am Falzmesser vorbei gegen die andere Walze läuft und den Bogen in den sich bildenden Falzspalt mitnimmt.This object is achieved in that 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.

Der Falzabschnitt besitzt bei einer bevorzugten Ausführungsform der Erfindung einen vorgegebenen, bevor- zugt den vollen Radius der Walze, und der Freigabeabschnitt besitzt einen gegenüber dem Falzabschnitt reduzierten Radius.In a preferred embodiment of the invention, 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.

Während einer vollen Umdrehung der beiden Walzen des Falzwalzenpaares gelangt erfindungsgemäß zuerst die Vorderkante des Falzabschnitts am Falzmesser vorbei - unter Mitnahme des zugeführten Bogens- gegen die zylinderförmige zweite Walze und bildet unter einem vorgegebenen Andruck dann während des Abrollens auf der zweiten Walze den Falzspalt, in dem der Bogen gefalzt wird. Anschließend dreht sich der Freigabeabschnitt an der zylindrischen zweiten Walze vorbei, wodurch die beiden Walzen aufgrund des reduzierten Radius des Freigabeabschnitts . vollständig außer Eingriff sind. Der zum Falzen benötigte, auf den zu falzenden Bogen ausgeübte Anpreßdruck wird auf diese Weise nur. während des Abrollens des Falzabschnitts ausgeübt. Anschließend läßt sich der gefalzte Bogen durch irgendeine Fördereinrichtung frei durch das Falzwalzenpaar hindurch transportieren, wodurch die Erzeugung unerwünschter, schräg zu den Außenkanten und der hinteren Kante verlaufenden Falten bei stationär gelagerten Walzen verhindert wird.During a full revolution of the two rollers of the pair of folding rollers, according to the invention, 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.

Vorteilhafterweise sind beide Walzen des Falzwalzenpaars in Umfangsrichtung in einen Falzabschnitt und seinen Freigabeabschnitt gestuft. Die beiden Walzen laufen dann derart synchron um, daß sich die Falzabschnitte und anschließend die Freigabeabschnitte jeweils gleichzeitig einander gegenüberliegend zwischen den Walzen hindurchdrehen. Durch diese symmetrische Ausbildung der beiden Falzwalzen wird ein symmetrischer besonders störungsfreier Einzug der Bogen in den Falzspalt gewährleistet.Advantageously, 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.

Gemäß einer alternativen Ausführungsform der Erfindung besitzen die Falzabschnitte und die Freigabeabschnitte im wesentlichen denselben Radius. Die Falzabschnitte bestehen aus einem relativ harten Material, und die Freigabeabschnitte bestehen aus einem relativ weichelastischen Material, z.B. weichem Gummi oder Schaumstoff. Bei dieser Ausführungsform der Erfindung gelangt die Vorderkante des Falzabschnitts am Falzmesser vorbei - unter Mitnahme des zugeführten Bogens - gegen die zylinderförmige bzw. ebenfalls gestufte zweite Walze und bildet unter dem vorgegebenen Andruck während des Abrollens auf der zweiten Walze den Falzspalt, in dem der Bogen gefalzt wird. Anschließend gelangt der oder die Freigabeabschnitte in Kontakt mit dem durchlaufenden Bogen. Der dann auf den Bogen ausgeübte Andruck ist von dem Material der Freigabeabschnitte abhängig und soll so bemessen sein, daß der gefalzte Bogen eben in der Bogendurchlaufrichtung geführt wird und dabei durch die vom Freigabeabschnitt übertragene Kraft zuverlässig transportiert wird. Ansonsten erforderliche zusätzliche Transporteinrichtungen, z.B. Transportwalzenpaare etc., können bei dieser Ausführungsform der Erfindung entfallen. Vorteilhaft ist diese Ausführungsform der Erfindung insbesondere dann, wenn die Länge der durch das Falzwalzenpaar hindurchlaufenden Bogen in gefalztem Zustand kleiner ist als der Umfang der Falzwalzen, da dann sichergestellt ist, daß die relativ stark belastenden Falzabschnitte nicht mehrfach gegen den Bogen wirken.According to an alternative embodiment of the invention, the fold sections and the release sections have essentially the same radius. The fold sections consist of a relatively hard material, and the release sections consist of a relatively soft-elastic material, for example soft rubber or foam. In this embodiment of the invention, 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. Otherwise required additional transport devices, for example transport roller pairs etc., can be omitted in this embodiment of the invention. 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.

Wird von dem Falzwalzenpaar nur eine Walze von einem Antriebsaggregat angetrieben, so besitzen beide Walzen bevorzugt an mindestens einer Randseite eine umlaufende Randzone mit vollem Radius, um über diese Randzonen die mitlaufende zweite Walze schlupffrei antreiben zu können. Alternativ lassen sich auch an mindestens einer Randseite miteinander kämmende Stirnräder zum formschlüssigen synchronen Antreiben beider Walzen vorsehen.If only one roller is driven by the drive unit of the folding roller pair, then 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. Alternatively, spur gears meshing with one another can also be provided on at least one edge side for positive, synchronous driving of both rollers.

Bevorzugt besteht der Falzabschnitt der einen oder beider Walzen aus einem relativ harten, elastischen Material, z.B. hartem Gummi, um den Anpreßdruck zu homogenisieren und eine Mindesthaftreibung auf der Oberfläche des Falzabschnitts zu erzeugen.Preferably 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.

Bei der Ausführungsform mit mindestens einer gestuften Falzwalze ist bevorzugt hinter dem Falzwalzenpaar ein Transportwalzenpaar angeordnet. Der Umfangswinkel der Falzabschnitte ist derart bemessen, daß die Falzabschnitte erst außer Eingriff gelangen, wenn die Falzlinie des Bogens in den Spalt des Transportwalzenpaars eintritt und von dem Transportwalzenpaar unter einem geringeren Anpreßdruck weitertransportiert wird. Durch diese Maßnahme werden Transport und Falzung des Bogens in vorteilhafter Weise im wesentlichen von zwei separaten Walzenpaaren ausgeführt, deren Anpreßdruck und sonstige Eigenschaften auf die entsprechende Funktion abgestellt werden können. Anstelle eines Transportwalzenpaares läßt sich dem'Falzwalzenpaar auch irgendeine andere geeignete und bekannte Transporteinrichtung nachschalten, die den aus dem Falzspalt austretenden gefalzten Bogen seiner weiteren Bestimmung zuführt.In the embodiment with at least one stepped folding roller, 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. Instead of a pair of transport rollers, 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.

Die lineare Vorschubbewegung des Falzmessers sowie die Drehbewegung des Falzwalzenpaares lassen sich vorteilhafterweise von einem gemeinsamen Antrieb ableiten. Für diesen Zweck wird z. B. das stumpfe Ende des Falzmessers exzentrisch an einer mit dem Antrieb verbundenen Antriebsscheibe angeordnet, und das vordere Ende des Falzmessers läuft in einer Gleitführung hin und her. Die Drehbewegung des Falzwalzenpaares sowie der Antriebsscheibe des Falzmessers werden nach jeweils einer Umdrehung durch eine Eintourenkupplung zwischen den Arbeitszyklen der Vorrichtung unterbrochen. Ein neuer Arbeitszyklus setzt ein, sobald ein neuer Bogen zwischen das Falzmesser und den Falzspalt transportiert wurde.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. For this purpose, 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.

Vorteilhafterweise ist eine der Walzen des Falzwalzenpaares federnd gelagert, damit sich der Falzspalt Dicken- und Materialschwankungen innerhalb des zu falzenden Bogens federnd anpassen kann. Aus demselben Grund kann auch eine der Transportwalzen federnd gelagert werden.Advantageously, 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. For the same reason, one of the transport rollers can also be spring-mounted.

Längs der Transportbahn, auf der die Bogen an das Falzwalzenpaar herantransportiert werden, sind verstellbare Anschläge vorgesehen, welche die Transportbewegung der Bogen beenden, wenn eine vorgewählte Falzlinie des Bogens in der durch Falzmesser und Falzspalt aufgespannten Ebene liegt. Die Enden des Bogens während der Annäherung an den Falzspalt werden bevorzugt derart nachgeführt, daß während der Bewegung des Falzmessers die Falzlinie des Bogens auf der Spitze des Falzmessers ruhend anliegt. Zu diesem Zweck läßt sich der ausgefahrene Anschlag, gegen den das vordere Ende des Bogens anläuft, längs der Transportbahn synchron mit der Vorschubbewegung des Falzmessers gegen das Falzmesser mit der geeigneten Geschwindigkeit zurückschieben.Das andere Ende des vom Falzmesser gegen den Falzspalt geführten Bogens läßt sich in ähnlicher Weise ebenfalls nachführen, um sicherzustellen, daß die Falzlinie sich auf der Spitze des Falzmessers nicht verschiebt. Eine derartige Nachführung, die gegen die Endkanten des zu falzenden Bogens wirkt, besitzt gegenüber einem Zwangsantrieb des Bogens den Vorteil, daß die Bewegung der Bogenenden unabhängig von der Oberflächenbeschaffenheit etc. des Bogenmaterials ist.Along the transport path on which the sheets are transported to the pair of folding rollers, 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. For this purpose, 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. Such a tracking, which acts against the end edges of the sheet to be folded, has the advantage over a positive drive of the sheet that the movement of the sheet ends is independent of the surface condition etc. of the sheet material.

Im folgenden wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnung näher erläutert.An exemplary embodiment of the invention is explained in more detail below with reference to the drawing.

Die Figur zeigt eine schematische Seitenansicht der erfindungsgemäßen Vorrichtung, die teilweise im Schnitt dargestellt ist. Ein Falzwalzenpaar 2, 4 ist in vorgegebenem Abstand auf der einen Seite einer Transportbahn angeordnet, die von der Auflageebene mehrerer Transportrollen 42, 44, 46 einer Transportvorrichtung 40 gebildet wird. Bogen aus Papier od. dgl. werden längs der Transportbahn bewegt, bis deren vorderes Ende gegegen einen ausfahrbaren Anschlag 48 anläuft, dessen Abstand von der Ebene des Falzspaltes 14 entsprechend der Lage der gewünschten Falzlinie einstellbar ist.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.

Auf der dem Falzwalzenpaar 2, 4 gegenüberliegenden Seite der Transportbahn ist mit dem Falzspalt 14 fluchtend ein Falzmesser 16 angeordnet, das mit der Spitze 18 in einer Vorschubbewegung gegen die Falzlinie eines durch den Anschlag 48 abgestoppten Bogens 3 anläuft und die Falzlinie gegen den Falzspalt 14 führt.On the side of the transport path opposite the pair of folding rollers 2, 4, 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 .

Beide Walzen 2, 4 des Falzwalzenpaares besitzen in Umfangsrichtung einen Falzabschnitt 10 bzw. 12 mit vollem Radius, und einen Freigabeabschnitt 6 bzw. 8 mit reduziertem Radius. Beide Walzen 2, 4 besitzen an den stirnseitigen Rändern umlaufende Randzonen 5 bzw. 7, die einen vollen Radius besitzen. Der Falzabschnitt 10, 12 beider Walzen 2, 4 besteht aus einem elastischen Material. Das Lager einer Walze 2 des Falzwalzenpaares 2, 4 wird mittels einer Feder 30 in ihre Normallage gedrückt, die durch den kleinstmöglichen Abstand zwischen den Achsen der beiden Walzen gekennzeichnet ist.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.

Die Falzabschnitte 10, 12 der beiden Walzen 2, 4 besitzen beide dieselbe Bogenlänge und sind am Umfang der Walzen derart angeordnet, daß ihre zuerst in den Falzspalt 14 einlaufenden Vorderkanten 11, 13 in Eingriff gelangen und anschließend die Falzabschnitte 10, 12 aufeinander abrollen und dabei den Falzspalt 14 mit einem vorgegebenen Anpreßdruck erzeugen. Sobald die Falzabschnitte 10, 12 bei einem Umlauf der Walzen außer Eingriff gelangen, laufen anschließend die beiden Freigabeabschnitte 6, 8 der Walzen 2, 4 zwischen den Walzen hindurch und erzeugen einen Zwischenraum zwischen den Walzen, der eine vorgegebene lichte Weite besitzt und einen andruckfreien Durchgang der Bogenenden durch das Falzwalzenpaar gewährleist . In - Transportrichtung hinter dem Falzwalzenpaar 2, 4 ist ein Transportwalzenpaar 32 vorgesehen, dessen eine Walze mittels einer Feder 34 federnd gelagert ist. Der Umfangsbogen der Falzabschnitte 10, 12 sowie der Abstand des Transportwalzenpaares von dem Falzwalzenpaar sind derart aufeinander abgestimmt, daß die Falzlinie des von den Falzabschnitten 10, 12 durch den Falzspalt 14 hindurch transportierten Bogens von dem Transportwalzenpaar 32 übernommen und weiter transportiert wird, bevor die Falzabschnitte 10, 12 außer Eingriff gelangen.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. As soon as the folding sections 10, 12 disengage during a rotation of the rolls, 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. In the transport direction, behind the pair of folding rollers 2, 4, 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.

Das hintere Ende 22 des Falzmessers 16 ist exzentrisch an einer mit einem Antrieb gekoppelten Antriebsscheibe 20 verbunden, und das vordere Ende des'Falzmessers 16 führt in einer Gleitführung 24 eine Hin- und Herbewegung aus. Ein Antrieb (nicht dargestellt) treibt über eine Eintourenkupplung eine der Walzen, z.B. die Walze 4, die über die Randzonen 5, 7 bzw. entsprechende Stirnräder die andere Walze mitnimmt, sowie die Antriebsscheibe 20 synchron an. Die Vorschubbewegung des Falzmessers 16 und die Drehbewegung der Walzen 2, 4 ist derart aufeinander abgestimmt, daß das Falzmesser 16 die am weitesten gegen den Falzspalt 14 vorgeschobene Stellung einnimmt, wenn die Vorderkanten 11, 13 der Falzabschnitte 10, 12 am Falzmesser 16 vorbei aufeinander zulaufen und dabei den Bogen in den sich zwischen den Falzabschnitten 10, 12 bildenden Falzspalt mitnehmen. Die Eintourenkupplung kuppelt das Falzwalzenpaar 2, 4 und das Falzmesser 16 zwischen den einzelnen Arbeitszyklen solange vom Antrieb ab, bis ein neuer Bogen längs der Transportbahn vor das Falzwalzenpaar 2, 4 transportiert wurde.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.

Um sicherzustellen, daß die Falzlinie des Bogens 3 bei der Vorschubbewegung gegen den Falzspalt 14 ohne Bewegung auf der Spitze 18 des Falzmessers 16 liegen bleibt, läßt sich der Anschlag 48, und ein dem Anschlag 48 entsprechender Anschlag auf der anderen Seite des Falzmessers 16 synchron mit der Bewegung des Falzmessers 16 auf das Falzmessser 16 zu bewegen, um die Enden eines zu falzenden Bogens geeignet nachzuführen.In order to ensure that the fold line of the sheet 3 remains on the tip 18 of the folding knife 16 during the feed movement against the folding gap 14 without movement, 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.

Durch die Anordnung einer weiteren erfindungsgemäßen Vorrichtung im Anschluß an die Transportwalzen 32 läßt sich der durch das Falzenwalzenpaar 2, 4 gefalzte und nach dem Durchlauf durch das Transportwalzenpaar 32 gefaltete Bogen ein weiteres Mal je nach Ausrichtung des entsprechenden Falzwalzenpaares parallel oder senkrecht zur ersten Falzlinie falzen. Auch die zweite, sogenannte Paketfalzung läßt sich mit der erfindungsgemäßen Vorrichtung ohne das Entstehen von unerwünschten schräg nach außen verlaufenden Falten oder Knicken durchführen.By arranging a further device according to the invention following the transport rollers 32, 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. Also 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.

Die Freigabeabschnitte 6, 8 können alternativ auch mit vollem Radius ausgebildet sein und aus einem relativ weichen, elastischen Material, z.B. weichem Gummi oder Schaumstoff bestehen. Während des Durchlaufs der Freigabeabschnitte durch den_Falzspalt wird dann ein relativ kleiner Anpreßdruck auf den gefalzten Bogen ausgeübt, der ausreicht, den gefalzten Bogen in der Bogendurchlaufebene sicher und zuverlässig zu transportieren. Das Transportwalzenpaar 32 kann dann entfallen.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.

Claims (16)

1. Vorrichtung zum Falzen von Bogen aus Papier od..dgl., mit einer die Bogen in einer Transportbahn führenden Transportvorrichtung, mit einem Falzwalzenpaar in vorgegebenem Abstand auf der einen Seite der Transportbahn, und mit einem mit dem Falzspalt des Falzwalzenpaares fluchtenden Falzmesser auf der anderen Seite der Transportbahn, das den Bogen an einer gewünschten Falzlinie berührt und diese gegen den Falzspalt führt, dadurch gekennzeichnet, daß eine Walze (2) des Falzwalzenpaares (2, 4) in Umfangsrichtung einen Falzabschnitt (10) und einen Freigabeabschnitt (6) enthält, und daß das Falzmesser (16) die Stellung vor dem Falzspalt (14) einnimmt, wenn die Vorderkante (11) des Falzabschnitts (10) am Falzmesser (16) vorbei gegen die andere Walze (4) läuft und den Bogen (3) in den sich bildenden Falzspalt (14) mitnimmt.1. Device for folding sheets of paper 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, which touches the sheet at a desired folding line and guides it against the folding nip, characterized in that a roller (2) of the pair of folding rollers (2, 4) contains a folding section (10) and a release section (6) in the circumferential direction , and that the Folding knife (16) assumes the position in front of the folding nip (14) when the front edge (11) of the folding section (10) runs past the folding knife (16) against the other roller (4) and the sheet (3) into the forming nip (14) takes along. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß beide Walzen (2, 4) des Falzwalzenpaares in Umfangsrichtung einen Falzabschnitt (10, 12) und einen Freigabeabschnitt (6, 8) enthalten, und daß das Falzmesser (16) die Stellung vor dem Falzspalt (14) einnimmt, wenn die Vorderkanten (11, 13) der Falzabschnitte (10, 12) am Falzmesser (16) vorbei aufeinander zulaufen und den Bogen (3) in den sich zwischen den Falzabschnitten (10, 12) bildenden Falzspalt (14) mitnehmen.2. Apparatus according to claim 1, characterized in that both rollers (2, 4) of the folding roller pair in the circumferential direction contain a folding section (10, 12) and a release section (6, 8), and that the folding knife (16) the position before Folding gap (14) takes up when the front edges (11, 13) of the folding sections (10, 12) run past the folding knife (16) and the sheet (3) in the folding gap (14.) Formed between the folding sections (10, 12) ) take with you. 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Falzabschnitte (10, 12) den vollen Radius der Falzwalze (2, 4) und die Freigabeabschnitte (6, 8) einen reduzierten Radius besitzen.3. Apparatus according to claim 1 or 2, characterized in that the folding sections (10, 12) have the full radius of the folding roller (2, 4) and the release sections (6, 8) have a reduced radius. 4. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Falzabschnitte (10, 12) und die Freigabeabschnitte (6, 8) im wesentlichen denselben Radius besitzen, und daß die Falzabschnitte (10, 12) aus relativ hartem Material, und die Freigabeabschnitte (6, 8) aus relativ weich-elastischem Material bestehen.4. Apparatus according to claim 1 or 2, characterized in that the fold sections (10, 12) and the release sections (6, 8) have substantially the same radius, and that the fold sections (10, 12) made of relatively hard material, and the Release sections (6, 8) consist of relatively soft-elastic material. 5. Vorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Walzen (2, 4) an den Rändern umlaufende Randzonen (5, 7) mit vollem Radius besitzen.5. Device according to one of the preceding claims, characterized in that the rollers (2, 4) at the edges have peripheral edge zones (5, 7) with a full radius. 6. Vorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß der Falzabschnitt (10, 12) der Walzen (2, 4) aus einem elastischen Material besteht.6. Device according to one of the preceding claims, characterized in that the folding section (10, 12) of the rollers (2, 4) consists of an elastic material. 7. Vorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß in Bogendurchlaufrichtung hinter dem Falzwalzenpaar (2, 4) ein Transportwalzenpaar (32) angeordnet ist, und daß der Umfangswinkel der Falzabschnitte (10, 12) derart bemessen ist, daß die Falzabschnitte (10, 12) erst außer Eingriff gelangen, wenn die Falzlinie des Bogens (3) in den Spalt des Transportwalzenpaares (32) eintritt.7. Device according to one of the preceding claims, characterized in that a pair of transport rollers (32) is arranged in the direction of sheet travel behind the pair of folding rollers (2, 4), and that the circumferential angle of the folding sections (10, 12) is dimensioned such that the folding sections ( 10, 12) only come out of engagement when the fold line of the sheet (3) enters the nip of the transport roller pair (32). 8. Vorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die lineare Vorschubbewegung des Falzmessers (16) und die Drehbewegung des Falzwalzenpaares (2, 4) von einem gemeinsamen Antrieb abgeleitet sind.8. Device according to one of the preceding claims, characterized in that the linear feed movement of the folding knife (16) and the rotary movement of the folding roller pair (2, 4) are derived from a common drive. 9. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß zwischen dem Antrieb und dem Falzwalzenpaar (2, 4) sowie dem Falzmesser (16) eine Eintourenkupplung vorgesehen ist, die das Falzwalzenpaar (2, 4) und das Falzmesser (16) zwischen den Arbeitszyklen vom Antrieb abkuppelt.9. The device according to claim 8, characterized in that between the drive and the pair of folding rollers (2, 4) and the folding blade (16) a single-speed clutch is provided, the pair of folding rollers (2, 4) and the folding blade (16) between the working cycles uncoupled from the drive. 10. Vorrichtung nach Anspruch 8 oder 9, dadurch gekennzeichnet, daß das der Spitze (18) abgewandte Ende (22) des Falzmessers (16) exzentrisch an einer mit dem Antrieb gekoppelten Antriebsscheibe (20) angeordnet ist und an dem vorderen Ende in einer Gleitführung (24) hin- und herläuft.1 0 . Apparatus according to claim 8 or 9, characterized in that the end (22) of the folding blade (16) facing away from the tip (18) is arranged eccentrically on a drive disk (20) coupled to the drive and at the front end in a sliding guide (24 ) runs back and forth. 11. Vorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß eine der Walzen (2) des Falzwalzenpaares (2, 4) federnd gelagert ist.11. Device according to one of the preceding claims, characterized in that one of the rollers (2) of the pair of folding rollers (2, 4) is resiliently mounted. 12. Vorrichtung nach einem der Ansprüche 7 bis 11, dadurch gekennzeichnet,daß eine der Transportwalzen (32) federnd gelagert ist.12. The device according to one of claims 7 to 11, characterized in that one of the transport rollers (32) is resiliently mounted. 13. Vorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß längs der Transportbahn (40-46) verstellbare Anschläge (48) vorgesehen sind, die die Transportbewegung der Bogen (3) beenden, wenn die Falzlinie des Bogens (3) in der durch Falzmesser (16) und Falzspalt (14) aufgespannten Ebene liegt.13. Device according to one of the preceding claims, characterized in that along the transport path (40-46) adjustable stops (48) are provided which end the transport movement of the sheet (3) when the fold line of the sheet (3) in the through Folding knife (16) and folding gap (14) spanned plane. 14. Vorrichtung nach Anspruch 13, dadurch gekennzeichnet, daß die Enden des Bogens (3) während der Annäherung an den Falzspalt (14) derart nachführbar sind, daß die Falzlinie des Bogens (3) auf der Spitze (18) des Falzmessers (16) ruht. -14. The apparatus according to claim 13, characterized in that the ends of the sheet (3) during the approach to the fold gap (14) can be tracked such that the fold line of the sheet (3) on the tip (18) of the folding knife (16) rests. - 15. Vorrichtung nach Anspruch 14, dadurch gekennzeichnet, daß der ausgefahrene Anschlag (48), gegen den das vordere Ende des Bogens (3) anläuft, längs der Transportbahn (40 - 46) synchron mit der Vorschubbewegung des Falzmessers (16) gegen das Falzmesser (16) verschiebbar ist.15. The apparatus according to claim 14, characterized in that the extended stop (48) against which the front end of the sheet (3) runs, along the transport path (40 - 46) synchronously with the feed movement of the folding knife (16) against the folding knife (16) is displaceable. 16. Vorrichtung nach einem der Ansprüche 1-4 und 6 bis 16, dadurch gekennzeichnet, daß die Walzen (2,4) an den Randzonen (5, 7) miteinander kämmende Stirnräder zum formschlüssigen Antreiben der Walzen besitzen.16. The device according to any one of claims 1-4 and 6 to 16, characterized in that the rollers (2,4) on the edge zones (5, 7) have intermeshing spur gears for positively driving the rollers.
EP80101697A 1979-03-30 1980-03-29 Folding apparatus for paper sheets or the like Withdrawn EP0017204A1 (en)

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DE19792912839 DE2912839A1 (en) 1979-03-30 1979-03-30 DEVICE FOR FOLDING SHEETS OF PAPER OR THE LIKE.
DE2912839 1979-03-30

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DE102013111838A1 (en) 2013-10-28 2015-04-30 Innovative Card Systems GmbH Fold module for paper sheets, the folding module having folding device and method for folding paper sheets
WO2015062583A2 (en) 2013-10-28 2015-05-07 Innovative Card Systems GmbH Folding module for paper sheets, folding device comprising the folding module, and method for folding paper sheets
WO2015062583A3 (en) * 2013-10-28 2015-07-30 Innovative Card Systems GmbH Folding module for paper sheets, folding device comprising the folding module, and method for folding paper sheets
CN106516304A (en) * 2016-12-09 2017-03-22 叶淦和 Fold-in-half device for garment
CN106516304B (en) * 2016-12-09 2018-12-07 新诚达时装（安徽）有限公司 A kind of clothes doubling-up device
CN110697487A (en) * 2019-10-22 2020-01-17 江苏阳光股份有限公司 Folding mechanism is used in processing of wool spinning surface fabric

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