EP0883566A1 - Knife folder - Google Patents

Knife folder

Info

Publication number
EP0883566A1
EP0883566A1 EP97903356A EP97903356A EP0883566A1 EP 0883566 A1 EP0883566 A1 EP 0883566A1 EP 97903356 A EP97903356 A EP 97903356A EP 97903356 A EP97903356 A EP 97903356A EP 0883566 A1 EP0883566 A1 EP 0883566A1
Authority
EP
European Patent Office
Prior art keywords
folding
sword
sheet material
rollers
pair
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
EP97903356A
Other languages
German (de)
French (fr)
Other versions
EP0883566B1 (en
Inventor
Maximilian Helmstädter
Karlheinz Weinmann
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.)
Boewe Systec AG
Original Assignee
Boewe Systec 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 Boewe Systec AG filed Critical Boewe Systec AG
Publication of EP0883566A1 publication Critical patent/EP0883566A1/en
Application granted granted Critical
Publication of EP0883566B1 publication Critical patent/EP0883566B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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 present invention relates generally to paper processing devices and in particular to a sword folding unit for folding a sheet material, which can be printed paper, for example.
  • Sword folders are known from the art. With them, a sheet feed belt is arranged horizontally, for example. In addition to the sheet feed belt, a pair of rollers is attached such that the axes of rotation of both rollers are located in a plane that is parallel to the surface of the sheet feed belt. The distance of the plane in which the axes of rotation of the roller pair are located is selected such that a sheet material that is transported by the sheet feed belt is just pushed over the roller pair by the sheet feed belt. Usually there is a folding sword in the middle above the pair of rollers, which is attached to a lever and can be moved cyclically into a folding position by means of the lever and a cam disc arrangement.
  • a folding edge which is formed at the lower end of the folding blade is oriented in such a way that between the plane formed by the axes of rotation of the pair of rollers and the folding edge of the folding blade small distance be ⁇ .
  • the fold edge is at substantially the same distance from both axes of rotation.
  • the sheet feed belt transports the sheet material into the folding area.
  • the horizontal movement of the sheet material is limited by the sheet material stop, the position of the stop affecting the post sition of the fold determined on the sheet material.
  • the folding blade is moved towards the sheet material substantially perpendicular to the sheet material.
  • the folding edge of the folding blade comes into contact with the sheet material and presses the contact area of the sheet material and the folding edge, which is essentially linear, between the pair of rollers.
  • areas of the sheet material which are separated by the contact area are raised with respect to the contact area.
  • the contact area of the sheet material and the fold edge now comes close to the plane which is defined by the axes of rotation of the two rollers of the pair of rollers.
  • the interaction of the two rollers causes the two rollers to convey the same as soon as they engage the sheet material at the contact area in the direction through the direction of movement of the folding blade into the folding position is predetermined. Due to the engagement of the pair of rollers and the sheet material, the sheet material is folded against the transport roller at the point of the contact area due to the contact pressure of the contact roller.
  • the folding action which is due to the interaction of the transport roller and the pressure roller, takes place essentially only at the point in time at which the contact area of the sheet material and the folding blade is exactly in the plane which is caused by the axes of rotation is formed. Due to the elasticity of the sheet material, the paper fold is hardly improved if the contact area of the sheet material and the folding blade are below the plane defined by the axes of rotation of the pair of rollers and the areas of the sheet material adjacent to the contact area run through the pair of rollers .
  • the sheet material For further processing through the paper processing line, it can be important which side of the sheet material, for example printed on one side, lies on a sheet material conveyor belt and which side is directed away from it. If the folded sheet material is inserted into envelopes or the like, the sheet material must first be inserted into the envelope with the address facing downward, whereupon after the envelope has been closed, the envelope must be turned, for example for subsequent stamping. However, there are also applications in which the sheet material has to be in the reverse orientation after being folded. In known sword folding units, the position of the folded sheet material in the paper processing line behind the sword folding unit is determined by the deflecting device and the general conveying direction of the paper processing line, unless a further device is provided for the necessary turning of the sheet material however, would increase the effort and cost.
  • DE-Al-2 146 013 discloses a device for longitudinal folding of sheets of paper.
  • a sheet of paper is fed in a first direction by means of a paper feed device to a rotating folding knife, the main surfaces of which are also parallel to the first direction and perpendicular to the plane which defines the sheet material being fed.
  • a sheet pre-folded by the interaction of the folding knife and an annular groove in a pre-folding cylinder is pushed between two ball rollers, the axis of rotation of which is arranged in a second direction, which is perpendicular to the first.
  • These ball rollers convey the folded sheet in the first direction to a pair of belts that improve the folding of the paper sheet.
  • the object of the present invention is a
  • the invention is based on the finding that in order to achieve a fold it is only necessary that the sheet material must be compressed as long as possible in relatively small areas directly adjacent to the fold, which, in contrast to the prior art, is not necessary is that the entire areas located on both sides of the fold are engaged, but the fold itself is only pressed very briefly.
  • the present invention makes it possible that the processing plane of the sheet material does not have to be changed, since the direction of movement of the paper given by the sword folding mechanism according to the invention does not coincide with the direction of movement of the folding sword, but is essentially perpendicular to it. Accordingly, no deflecting devices and the like are required to return the sheet behind the sword folding unit back to the processing level in which it was fed to the sword folding unit.
  • a right-angled deflection of the sheet material flow which is often advantageous for a paper processing line, takes place solely through the sword folding device.
  • FIG. 1 shows a side sectional view of the sword folding mechanism according to the present invention, the folding sword being outside the folding position.
  • FIG. 2 shows a side sectional view of the sword folding mechanism according to the present invention, the folding sword being in a folding position.
  • Fig. 3 is a front view along the line A - A 'of Fig. 1 of the sword folding unit according to the invention.
  • a feed device 12 has a drive roller 14, an idler roller 16, a conveyor belt 18, which is arranged between the drive roller 14 and the idler roller 16, and pressure rollers 20a, 20b, 20c.
  • a lever arrangement 22 is fastened to the feed device 12 so as to be rotatable about a lever tilt axis.
  • the lever arrangement 22 is delimited on one side, which lies opposite the pressure rollers 20 with respect to the lever tilt axis 24, by runners 26a, 26b, each of which engages with cams 28a, 28b.
  • lever arms 30a, 30b are formed, which are firmly connected to one another by means of a folding sword holder 32.
  • a folding sword 34 is connected to the folding sword holder 32.
  • a folding edge 36 is formed on the side of the folding blade 34 opposite the folding blade holder 32.
  • the folding blade 34 has on the side of the folding edge Te 36 recesses 38a, 38b, 38c, 38d, 38e, which are evenly spaced in the longitudinal direction of the folding sword 34, which is also referred to as the sword direction.
  • a folding area 40 which is defined by a recess in the support 42 for a sheet material 44 to be folded.
  • the sheet material 44 can be unfolded or, for example, already have a first fold 46.
  • the position of a second fold 48 (FIG. 2) on the sheet material 44, which is produced by the sword folding mechanism 10 of the present invention, is determined by the distance between a stop 50 and a contact line 52 of the fold edge 36 and the sheet material 44, the stop 50 in the described embodiment being mounted horizontally displaceably on the support 42.
  • transport rollers 54a-54g and a plurality of pressure rollers 56a-56g are each rotatably mounted in a roller holder 58.
  • Transport roller drives 60a-60g are arranged for rotating the transport rollers 54a-54g about a respective transport roller rotation axis 62a-62g.
  • the pressure rollers 56a-56g are each rotatable relative to the transport rollers 54a-54g about respective pressure-roller rotation axes 64a-64g.
  • the transport roller rotation axes 62a-62g and the pressure roller rotation axes 64a-64g are all parallel to one another and perpendicular to both the roller holder 58 and the support 42.
  • Opposing transport rollers 54a-54g and pressure rollers 56a-56g each form a pair of conveyor rollers, each pressure roller 56a-56g being pressed against the transport roller 54a-54g assigned to it by a pressure device 66, which in the present embodiment has a spring respective conveyor roller pairs is pressed.
  • Each pressure roller of each pair of conveyor rollers is thus perpendicular to their respective because of the axis of rotation.
  • both the transport rollers 54a-54g and the pressure rollers 56a-56g each have approximately the shape of a truncated cone.
  • the rollers are composed of a cylindrical base which tapers conically towards the folding sword. This conical tapering continues at the edges of the recess in the support 42. This leads to a V-shaped profile of the fold area 40.
  • this V-shaped profile of the fold area 40 is formed by the interaction of a pair of conveyor rollers, the V-shaped profile being continued through the recess of the support 42.
  • the cutouts 38a-38e which are provided in the folding sword 34, are each centered in the sword direction with respect to the transport roller axes of rotation 62a-62g.
  • cylindrical pressure rollers 68a, 68b, 68c, 68d (68c, 68d not shown) are arranged in pairs.
  • the mutual alignment of the paired cylindrical press rollers corresponds to that of the conveyor roller pairs.
  • the cylindrical press rollers 68a, 68b are each driven by a drive device 70a, 70b for the cylindrical press rollers about a respective axis of rotation of the cylindrical press rollers 72a, 72b.
  • the cylindrical press rolls 68c, 68d, not shown, are each prestressed toward the cylindrical press rolls 68c, 68d.
  • the folding process takes place.
  • FIG. 1 shows the state of a preferred exemplary embodiment of the sword folding mechanism 10 according to the invention immediately before the folding process begins.
  • the lever arrangement 22 and the folding sword 34 connected to it via the folding sword holder 32 are in their maximum deflection with respect to the support 42. This maximum deflection is given by the size of a cam which is provided on a certain circumferential area of the cam disks 28a, 28b.
  • a joint rotation of the cam disks 28a, 28b likewise causes the rotors 26a, 26b to rotate in the opposite direction of rotation, which leads to the fact that the lever arms 30a, 30b, which are fixedly connected to one another and are rotatably mounted about the lever tilt axis 24, lie in the folds lower rich 40.
  • the folding edge 36 of the folding blade 34 comes into contact with the sheet material 44 along the contact line 52.
  • the folding edge presses the sheet material ever deeper into the folding area, as a result of which the areas of the sheet material which are outside of the fold area are located in a V-shape, as can be seen in FIG. 2.
  • the sheet is pressed by the folding sword 34 between the respective pairs of conveyor rollers 54a, 56a-54g, 56g.
  • the cutouts 38a-38e prevent the folding blade 34 from being engaged by the conveyor roller pairs in this position, which is referred to as the folding position.
  • the areas of the folding edge 36 present between the cutouts 38a-38e cause the paper to be pressed between the pairs of conveyor rollers against the biasing force exerted by the respective pressing devices 66b-66f.
  • the sheet material 44 to be folded is now firmly engaged by the individual pairs of conveyor rollers due to the pretensioning force exerted by the individual pressing devices. Therefore, the lever assembly 22 can be raised again without the sheet material except handle is brought with the pair of conveyor rollers.
  • the folding sword 34 thus leaves the folding area 40 again, after which a new folding cycle can begin.
  • the V-shaped sheet material engaged by the pairs of conveyor rollers can be conveyed laterally out of the fold region in the direction of the cylindrical pressure roller 68a or in the direction of the cylindrical pressure roller 68b.
  • the second fold 48 which at the time when the folding sword 34 was again moved out of the folding area 40, becomes only on contact lines of the individual transport rollers 54a-54g and the individual pressure rollers 56a-56g was prepared to a certain extent by the individual pairs of conveyor rollers.
  • the sheet runs through the pair of cylindrical press rollers 68a, 68b which is arranged on the side on which the folded sheet material 44 is conveyed out of the fold area.
  • the sheet is in an erected, essentially vertical position, whereby it it is possible, by simple means, to lay the sheet on one side, for example printed, or on the other side, for example unprinted, as is required by the subsequent sheet material processing.
  • the sword folding unit 10 not only performs the folding function, but also the right-angled deflection and the erection of the sheet material in a single device.
  • the feed device 12 can be omitted since a device connected in a paper processing line in front of the sword folding unit 10 can feed the sheet material 44 directly into the sword folding unit 10.
  • the lever assembly 22 must then be otherwise secured and synchronized with the sheet feed rate.
  • sword folding mechanism it is not necessary for the sword folding mechanism to be oriented essentially horizontally. It can also be inclined, for example, in a certain way, as is required for a special application.
  • the folding sword 34 does not have to be suspended from the lever arrangement 22, but can otherwise be suspended independently of the feed device 12 and strike the same at any angle that is not parallel to the sheet material 44. Furthermore, it is immaterial to the present invention whether the recesses extend from the folding edge 36 to the folding sword holder 32 or are not present at all, insofar as the surfaces of the transport rollers 54a-54g or pressure rollers 56a-56g are such are carried out that the sheet material 44 remains in engagement with the pair of conveyor rollers when the folding blade 34 is moved out of the folding area 40.
  • one pair of conveyor rollers in connection with cylindrical pressure rollers 68a, 68b is sufficient to produce a continuous fold of the sheet material 44. It is also possible to omit the cylindrical press rollers 68a, 68b, since the continuous fold is already generated by the pairs of conveyor rollers. Moreover, it is not necessary for the sheet material conveying device to be designed in the form of pairs of conveyor rollers, since a continuous elastic conveyor belt can also be provided, the surface of which is in contact with the sheet material 44 comes, can be designed such that it remains in engagement with the sheet material 44 when the folding blade 34 is removed from the folding area 40.
  • the described reduction in the direction of the support 42 of the diameter of the transport rollers 54a-54g or of the pressure rollers 56a-56g does not have to be linear, but the cross-section can also be reduced continuously in a spherical, parabolic or other manner.
  • the support 42 and the stop 50 which have been described in relation to a preferred exemplary embodiment of the sword folding mechanism 10, are not absolutely necessary, since the sheet material 44 is also, for example, by a defined kinetic energy which the sheet material from received the feed device, can be placed in a certain position directly above the pairs of conveyor rollers.

Landscapes

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

Abstract

A knife folder (10) for folding sheet material (44) comprises a sheet feed (12) for feeding the sheet material (44) in a first direction, a folder for said sheet material (44) and a conveyor (54a-54g, 56a-56g) for conveying it and having at least one pair of rotating conveying components (54a, 56a), the axes of rotation (62a, 64a) of which are arranged in a second direction substantially perpendicular to the first. In its folding position the folder pushes the folded sheet material (44) between the conveying components of the pair(s) of conveying components. The sheet material is advanced as far as a stop (50). The folder has a knife (34) extending in a third direction substantially perpendicular to the first and second directions. The sheet material (44) can be conveyed in the third direction by actuating the conveying components (54a, 56a).

Description

Schwertfalzwerk Sword folding unit
Beschreibungdescription
Die vorliegende Erfindung bezieht sich allgemein auf Papier¬ verarbeitungsvorrichtungen und insbesondere auf ein Schwert¬ falzwerk zum Falzen eines Blattgutes, das beispielsweise be¬ drucktes Papier sein kann.The present invention relates generally to paper processing devices and in particular to a sword folding unit for folding a sheet material, which can be printed paper, for example.
Schwertfalzwerke sind aus der Technik bekannt. Bei ihnen ist ein Blattzuführungsband beispielsweise horizontal angeord¬ net. Neben dem Blattzuführungsband ist ein Rollenpaar derart angebracht, daß sich die Drehachsen beider Rollen in einer Ebene befinden, die zu der Oberfläche des Blattzuführungs¬ bandes parallel ist. Der Abstand der Ebene, in der sich die Drehachsen des Rollenpaares befinden, ist derart gewählt, daß ein Blattgut, das von dem Blattzuführungsband transpor¬ tiert wird, von dem Blattzuführungsband eben über das Rol¬ lenpaar geschoben wird. Üblicherweise befindet sich mittig über dem Rollenpaar ein Falzschwert, das an einem Hebel be¬ festigt ist und mittels des Hebels und einer Kurvenscheiben- anordnung zyklisch in eine Falzposition bewegt werden kann. Wenn sich das Falzschwert in der Falzposition befindet, ist eine Falzkante, die am unteren Ende des Falzschwertes ausge¬ bildet ist, derart ausgerichtet, daß sich zwischen der Ebe¬ ne, die durch die Drehachsen des Rollenpaares gebildet wird, und der Falzkante des Falzschwertes ein kleiner Abstand be¬ findet. Darüberhinaus weist die Falzkante zu beiden Drehach¬ sen einen im wesentlichen gleichen Abstand auf. Auf der dem Blattzuführungsband entgegengesetzten Seite bezüglich des Rollenpaares befindet sich ein horizontal verschiebbarer Blattgutanschlag.Sword folders are known from the art. With them, a sheet feed belt is arranged horizontally, for example. In addition to the sheet feed belt, a pair of rollers is attached such that the axes of rotation of both rollers are located in a plane that is parallel to the surface of the sheet feed belt. The distance of the plane in which the axes of rotation of the roller pair are located is selected such that a sheet material that is transported by the sheet feed belt is just pushed over the roller pair by the sheet feed belt. Usually there is a folding sword in the middle above the pair of rollers, which is attached to a lever and can be moved cyclically into a folding position by means of the lever and a cam disc arrangement. When the folding blade is in the folding position, a folding edge which is formed at the lower end of the folding blade is oriented in such a way that between the plane formed by the axes of rotation of the pair of rollers and the folding edge of the folding blade small distance be¬. In addition, the fold edge is at substantially the same distance from both axes of rotation. On the side opposite the sheet feed belt with respect to the pair of rollers there is a horizontally displaceable sheet material stop.
Bei einem derartigen bekannten Schwertfalzwerk transportiert das Blattzuführungsband das Blattgut in den Falzbereich. Die horizontale Bewegung des Blattguts wird durch den Blattgut¬ anschlag begrenzt, wobei die Position des Anschlages die Po- sition des Falzes auf dem Blattgut bestimmt. Befindet sich nun das Blattgut in der Falzposition, wird das Falzschwert im wesentlichen senkrecht zu dem Blattgut zu dem Blattgut hin bewegt. Die Falzkante des Falzschwertes kommt mit dem Blattgut in Kontakt und drückt den Kontaktbereich des Blatt¬ gutes und der Falzkante, der im wesentlichen linienförmig ist, zwischen das Rollenpaar. Dadurch werden Bereiche des Blattgutes, die durch den Kontaktbereich getrennt sind, je¬ weils bezüglich des Kontaktbereiches angehoben. Der Kontakt¬ bereich des Blattgutes und der Falzkante gelangt nun in die Nähe der Ebene, die durch die Drehachsen der beiden Rollen des Rollenpaares definiert ist.In such a known sword folding unit, the sheet feed belt transports the sheet material into the folding area. The horizontal movement of the sheet material is limited by the sheet material stop, the position of the stop affecting the post sition of the fold determined on the sheet material. If the sheet material is now in the folding position, the folding blade is moved towards the sheet material substantially perpendicular to the sheet material. The folding edge of the folding blade comes into contact with the sheet material and presses the contact area of the sheet material and the folding edge, which is essentially linear, between the pair of rollers. As a result, areas of the sheet material which are separated by the contact area are raised with respect to the contact area. The contact area of the sheet material and the fold edge now comes close to the plane which is defined by the axes of rotation of the two rollers of the pair of rollers.
Das Zusammenwirken der beiden Rollen, von denen eine eine angetriebene Transportrolle und die andere eine mitlaufende Gegendruckrolle ist, verursacht, daß die beiden Rollen, so¬ bald sie das Blattgut an dem Kontaktbereich in Eingriff neh¬ men, dasselbe in der Richtung weiterbefördern, die durch die Bewegungsrichtung des Falzschwertes in die Falzposition vor¬ gegeben ist. Durch die Ineingriffnähme des Rollenpaares und des Blattgutes wird das Blattgut an der Stelle des Kontakt¬ bereiches aufgrund der Anpreßkraft der Anpreßrolle gegen die Transportrolle gefalzt.The interaction of the two rollers, one of which is a driven transport roller and the other a moving counterpressure roller, causes the two rollers to convey the same as soon as they engage the sheet material at the contact area in the direction through the direction of movement of the folding blade into the folding position is predetermined. Due to the engagement of the pair of rollers and the sheet material, the sheet material is folded against the transport roller at the point of the contact area due to the contact pressure of the contact roller.
Die Falzwirkung, die aufgrund des Zusammenwirkens der Trans¬ portrolle und der Andruckrolle vorhanden ist, findet im we¬ sentlichen nur zu dem Zeitpunkt statt, zu dem sich der Kon¬ taktbereich des Blattgutes und des Falzschwertes genau in der Ebene befindet, die durch die Drehachsen gebildet ist. Aufgrund der Elastizität des Blattgutes wird der Papierfalz kaum mehr verbessert, wenn sich der Kontaktbereich des Blattgutes und des Falzschwerts unterhalb der Ebene, die durch die Drehachsen des Rollenpaares definiert ist, befin¬ det und die an den Kontaktbereich angrenzenden Bereiche des Blattgutes durch das Rollenpaar hindurchlaufen.The folding action, which is due to the interaction of the transport roller and the pressure roller, takes place essentially only at the point in time at which the contact area of the sheet material and the folding blade is exactly in the plane which is caused by the axes of rotation is formed. Due to the elasticity of the sheet material, the paper fold is hardly improved if the contact area of the sheet material and the folding blade are below the plane defined by the axes of rotation of the pair of rollers and the areas of the sheet material adjacent to the contact area run through the pair of rollers .
Ist das Blattgut vollständig durch das Rollenpaar hin¬ durchgeschaut, muß seine Bewegungsrichtung durch eine Um- lenkvorrichtung geändert werden, um dasselbe wieder auf die Ebene einer Papierverarbeitungsstraße, von der das Blattzu¬ führungsband und das Schwertfalzwerk Bestandteile sind, zu¬ rückzubringen.If the sheet material has been seen completely through the pair of rollers, its direction of movement must be Steering device can be changed to bring it back to the level of a paper processing line, of which the sheet feed belt and the sword folding unit are components.
Für die Weiterverarbeitung durch die Papierverarbeitungs¬ straße kann es wichtig sein, welche Seite des beispielsweise auf einer Seite bedruckten Blattgutes auf einem Blattgutför¬ derband aufliegt, und welche von demselben weg gerichtet ist. Wird das gefalzte Blattgut etwa in Kuverts oder der¬ gleichen einkuvertiert, so muß das Blattgut zunächst mit nach unten gerichteter Adresse in das Kuvert eingebracht werden, woraufhin nach dem Schließen des Kuverts beispiels¬ weise für ein nachfolgendes Freistempeln ein Wenden des Kuverts nötig ist. Es gibt jedoch auch Anwendungen, bei denen das Blattgut nach dem Falzen in umgekehrter Ausrich¬ tung vorliegen muß. Bei bekannten Schwertfalzwerken ist die Lage des gefalzten Blattguts in der Papierverarbeitungs¬ straße hinter dem Schwertfalzwerk durch die Umlenkvorrich¬ tung und die allgemeine Förderrichtung der Papierverarbei¬ tungsstraße festgelegt, es sei denn, daß für ein notwendiges Wenden des Blattgutes eine weitere Vorrichtung vorgesehen wird, die jedoch den Aufwand und die Kosten erhöhen würde.For further processing through the paper processing line, it can be important which side of the sheet material, for example printed on one side, lies on a sheet material conveyor belt and which side is directed away from it. If the folded sheet material is inserted into envelopes or the like, the sheet material must first be inserted into the envelope with the address facing downward, whereupon after the envelope has been closed, the envelope must be turned, for example for subsequent stamping. However, there are also applications in which the sheet material has to be in the reverse orientation after being folded. In known sword folding units, the position of the folded sheet material in the paper processing line behind the sword folding unit is determined by the deflecting device and the general conveying direction of the paper processing line, unless a further device is provided for the necessary turning of the sheet material however, would increase the effort and cost.
Die DE-Al-2 146 013 offenbart eine Einrichtung zum Längsfal¬ zen von Papierbögen. Ein Papierbogen wird in einer ersten Richtung mittels einer Papierzuführungseinrichtung einem rotierenden Falzmesser zugeführt, dessen Hauptoberflächen ebenfalls parallel zu der ersten Richtung und senkrecht zu der Ebene sind, die das zugeführte Blattgut definiert. Ein durch das Zusammenwirken des Falzmessers und einer Ringnut in einem Vorfalzzylinder vorgefalzter Bogen wird zwischen zwei Kugelrollen geschoben, deren Drehachse in einer zweiten Richtung angeordnet ist, die senkrecht zu der ersten ist. Diese Kugelrollen fördern das gefalzte Blatt in der ersten Richtung zu einem Bänderpaar, das den Falz des Papierbogens verbessert. Die Aufgabe der vorliegenden Erfindung besteht darin, einDE-Al-2 146 013 discloses a device for longitudinal folding of sheets of paper. A sheet of paper is fed in a first direction by means of a paper feed device to a rotating folding knife, the main surfaces of which are also parallel to the first direction and perpendicular to the plane which defines the sheet material being fed. A sheet pre-folded by the interaction of the folding knife and an annular groove in a pre-folding cylinder is pushed between two ball rollers, the axis of rotation of which is arranged in a second direction, which is perpendicular to the first. These ball rollers convey the folded sheet in the first direction to a pair of belts that improve the folding of the paper sheet. The object of the present invention is a
Schwertfalzwerk zum Falzen eines Blattgutes zu schaffen, das mit reduziertem Aufwand eine höhere Flexibilität bei der Weiterverarbeitung des gefalzten Blattguts liefert.To create a sword folding unit for folding a sheet material which, with reduced effort, provides greater flexibility in the further processing of the folded sheet material.
Diese Aufgabe wird durch ein Schwertfalzwerk zum Falzen ei¬ nes Blattgutes gemäß Patentanspruch 1 gelöst.This object is achieved by a sword folding mechanism for folding a sheet material according to claim 1.
Der Erfindung liegt die Erkenntnis zugrunde, daß es zum Er¬ zielen eines Falzes lediglich notwendig ist, daß das Blatt¬ gut an relativ kleinen, unmittelbar an den Falz angrenzenden Bereichen möglichst lang zusammengedrückt werden muß, wobei es im Gegensatz zum Stand der Technik nicht nötig ist, daß die gesamten Bereiche, die sich auf beiden Seiten des Falzes befinden, in Eingriff genommen werden, wobei der Falz selbst jedoch nur sehr kurz gepreßt wird.The invention is based on the finding that in order to achieve a fold it is only necessary that the sheet material must be compressed as long as possible in relatively small areas directly adjacent to the fold, which, in contrast to the prior art, is not necessary is that the entire areas located on both sides of the fold are engaged, but the fold itself is only pressed very briefly.
Ferner ermöglicht es die vorliegende Erfindung, daß die Ver¬ arbeitungsebene des Blattgutes nicht verändert werden muß, da die durch das erfindungsgemäße Schwertfalzwerk gegebene Bewegungsrichtung des Papiers nicht mit der Bewegungsrich¬ tung des Falzschwertes übereinstimmt, sondern zu dieser im wesentlichen senkrecht ist. Es sind demnach keine Umlenkvor¬ richtungen und dergleichen erforderlich, um das Blatt hinter dem Schwertfalzwerk wieder auf die Verarbeitungsebene zu¬ rückzuführen, in der es dem Schwertfalzwerk zugeführt wurde. Zudem findet bei einer Ausführungsform des Schwertfalzwerkes gemäß der Erfindung eine für eine Papierverarbeitungsstraße oftmals vorteilhafte rechtwinklige Umlenkung des Blattgut¬ stroms allein durch die Schwertfalzvorrichtung statt.Furthermore, the present invention makes it possible that the processing plane of the sheet material does not have to be changed, since the direction of movement of the paper given by the sword folding mechanism according to the invention does not coincide with the direction of movement of the folding sword, but is essentially perpendicular to it. Accordingly, no deflecting devices and the like are required to return the sheet behind the sword folding unit back to the processing level in which it was fed to the sword folding unit. In addition, in one embodiment of the sword folding mechanism according to the invention, a right-angled deflection of the sheet material flow, which is often advantageous for a paper processing line, takes place solely through the sword folding device.
Da das Blattgut durch das erfindungsgemäße Schwertfalzwerk aufgerichtet und im wesentlichen senkrecht zur Bewegungs¬ richtung des Falzschwertes das Schwertfalzwerk verläßt, ist die Lage des Blattgutes in der Papierverarbeitungsstraße hinter dem Schwertfalzwerk durch einfach ausführbare Umlege¬ vorrichtungen frei wählbar. Ein bevorzugtes Ausführungsbeispiel der vorliegenden Erfin¬ dung wird nachfolgend bezugnehmend auf die beiliegenden Zeichnungen detaillierter erläutert. Es zeigen:Since the sheet material is erected by the sword folding mechanism according to the invention and leaves the sword folding mechanism essentially perpendicular to the direction of movement of the folding blade, the position of the sheet material in the paper processing line behind the sword folding mechanism can be freely selected by simply executing folding devices. A preferred embodiment of the present invention is explained in more detail below with reference to the accompanying drawings. Show it:
Fig. 1 eine Seitenschnittansicht des Schwertfalzwerkes ge¬ mäß der vorliegenden Erfindung, wobei sich das Falzschwert außerhalb der Falzposition befindet.1 shows a side sectional view of the sword folding mechanism according to the present invention, the folding sword being outside the folding position.
Fig. 2 eine Seitenschnittansicht des Schwertfalzwerkes ge¬ mäß der vorliegenden Erfindung, wobei sich das Falzschwert in einer Falzposition befindet.2 shows a side sectional view of the sword folding mechanism according to the present invention, the folding sword being in a folding position.
Fig. 3 eine Vorderansicht entlang der Linie A - A' aus Fig. 1 des erfindungsgemäßen Schwertfalzwerkes.Fig. 3 is a front view along the line A - A 'of Fig. 1 of the sword folding unit according to the invention.
In den Fig. 1, 2 und 3 ist ein Schwertfalzwerk 10 gezeigt. Eine Zuführvorrichtung 12 weist eine Antriebswalze 14, eine Mitlaufwalze 16, ein Transportband 18, das zwischen der An¬ triebswalze 14 und der Mitlaufwalze 16 angeordnet ist, und Andrückwalzen 20a, 20b, 20c auf.1, 2 and 3, a sword folding mechanism 10 is shown. A feed device 12 has a drive roller 14, an idler roller 16, a conveyor belt 18, which is arranged between the drive roller 14 and the idler roller 16, and pressure rollers 20a, 20b, 20c.
Eine Hebelanordnung 22 ist um eine Hebelkippachse drehbar an der Zuführvorrichtung 12 befestigt. Die Hebelanordnung 22 ist an einer Seite, die bezüglich der Hebelkippachse 24 den Andrückwalzen 20 gegenüberliegt, durch Läufer 26a, 26b be¬ grenzt, die jeweils mit Kurvenscheiben 28a, 28b in Eingriff sind.A lever arrangement 22 is fastened to the feed device 12 so as to be rotatable about a lever tilt axis. The lever arrangement 22 is delimited on one side, which lies opposite the pressure rollers 20 with respect to the lever tilt axis 24, by runners 26a, 26b, each of which engages with cams 28a, 28b.
Auf einer bezüglich der Hebelkippachse 24 der Kombination der Kurvenscheiben 28a, 28b und der Läufer 26a, 26b gegen¬ überliegenden Seite der Hebelanordnung 22 sind Hebelarme 30a, 30b gebildet, die mittels eines Falzschwerthalters 32 fest miteinander verbunden sind.On an opposite side of the lever arrangement 22 with respect to the lever tilt axis 24 of the combination of the cam disks 28a, 28b and the sliders 26a, 26b, lever arms 30a, 30b are formed, which are firmly connected to one another by means of a folding sword holder 32.
Ferner ist ein Falzschwert 34 mit dem Falzschwerthalter 32 verbunden. Auf der dem Falzschwerthalter 32 gegenüberlie¬ genden Seite des Falzschwertes 34 ist eine Falzkante 36 aus¬ gebildet. Das Falzschwert 34 weist an der Seite der Falzkan- te 36 Aussparungen 38a, 38b, 38c, 38d, 38e auf, die in der Längsrichtung des Falzschwertes 34, die auch als Schwert¬ richtung bezeichnet wird, gleichmäßig beabstandet sind.Furthermore, a folding sword 34 is connected to the folding sword holder 32. A folding edge 36 is formed on the side of the folding blade 34 opposite the folding blade holder 32. The folding blade 34 has on the side of the folding edge Te 36 recesses 38a, 38b, 38c, 38d, 38e, which are evenly spaced in the longitudinal direction of the folding sword 34, which is also referred to as the sword direction.
Unter dem Falzschwert 34 befindet sich ein Falzbereich 40, der durch eine Ausnehmung in der Auflage 42 für ein zu fal¬ zendes Blattgut 44 definiert ist. Das Blattgut 44 kann unge- falzt sein oder beispielsweise bereits einen ersten Falz 46 aufweisen. Die Position eines zweiten Falzes 48 (Fig. 2) auf dem Blattgut 44, welcher durch das Schwertfalzwerk 10 der vorliegenden Erfindung hergestellt wird, ist durch den Ab¬ stand zwischen einem Anschlag 50 und einer Kontaktlinie 52 der Falzkante 36 und des Blattguts 44 bestimmt, wobei der Anschlag 50 bei dem beschriebenen Ausführungsbeispiel ho¬ rizontal verschiebbar auf der Auflage 42 angebracht ist.Under the folding blade 34 there is a folding area 40 which is defined by a recess in the support 42 for a sheet material 44 to be folded. The sheet material 44 can be unfolded or, for example, already have a first fold 46. The position of a second fold 48 (FIG. 2) on the sheet material 44, which is produced by the sword folding mechanism 10 of the present invention, is determined by the distance between a stop 50 and a contact line 52 of the fold edge 36 and the sheet material 44, the stop 50 in the described embodiment being mounted horizontally displaceably on the support 42.
Bei dem bevorzugten Ausführungsbeispiel befinden sich auf der dem Blattgut 44 gegenüberliegenden Seite der Auflage 42 eine Mehrzahl von Transportrollen 54a - 54g und eine Mehr¬ zahl von Anpreßrollen 56a - 56g. Die Transportrollen 54a - 54g und die Anpreßrollen 56a - 56g sind in einem Rollenhal¬ ter 58 jeweils drehbar gelagert. Transportrollenantriebe 60a - 60g sind zum jeweiligen Drehen der Transportrollen 54a - 54g um eine jeweilige Transportrollendrehachse 62a - 62g an¬ geordnet. Die Anpreßrollen 56a - 56g sind jeweils gegenüber der Transportrollen 54a - 54g um jeweilige Anpreßrollendreh¬ achsen 64a - 64g drehbar gelagert. Bei dem bevorzugten Aus¬ führungsbeispiel der vorliegenden Erfindung sind die Trans¬ portrollendrehachsen 62a - 62g und die Anpreßrollendrehach¬ sen 64a - 64g alle zueinander parallel und sowohl zu dem Rollenhalter 58 als auch zu der Auflage 42 senkrecht. Je¬ weils gegenüberliegende Transportrollen 54a - 54g und An¬ preßrollen 56a - 56g bilden ein Förderrollenpaar, wobei jede Anpreßrolle 56a - 56g durch eine Anpreßvorrichtung 66, die bei dem vorliegenden Ausführungsbeispiel eine Feder auf¬ weist, an die ihr zugeordnete Transportrolle 54a - 54g des jeweiligen Förderrollenpaars angepreßt wird. Jede Anpreßrol¬ le jedes Förderrollenpaars ist somit senkrecht zu ihrer je- weiligen Drehachse verschiebbar.In the preferred embodiment, on the side of the support 42 opposite the sheet material 44 there are a plurality of transport rollers 54a-54g and a plurality of pressure rollers 56a-56g. The transport rollers 54a-54g and the pressure rollers 56a-56g are each rotatably mounted in a roller holder 58. Transport roller drives 60a-60g are arranged for rotating the transport rollers 54a-54g about a respective transport roller rotation axis 62a-62g. The pressure rollers 56a-56g are each rotatable relative to the transport rollers 54a-54g about respective pressure-roller rotation axes 64a-64g. In the preferred exemplary embodiment of the present invention, the transport roller rotation axes 62a-62g and the pressure roller rotation axes 64a-64g are all parallel to one another and perpendicular to both the roller holder 58 and the support 42. Opposing transport rollers 54a-54g and pressure rollers 56a-56g each form a pair of conveyor rollers, each pressure roller 56a-56g being pressed against the transport roller 54a-54g assigned to it by a pressure device 66, which in the present embodiment has a spring respective conveyor roller pairs is pressed. Each pressure roller of each pair of conveyor rollers is thus perpendicular to their respective because of the axis of rotation.
Bei dem beschriebenen Ausführungsbeispiel weisen sowohl die Transportrollen 54a - 54g als auch die Anpreßrollen 56a - 56g jeweils in etwa die Form eines Kegelstumpfes auf. Wie es in Fig. 1 und Fig. 2 zu sehen ist, setzen sich die Rollen aus einer zylindrischen Basis zusammen, die sich zum Falz¬ schwert hin kegelförmig verjüngt. Diese kegelförmige Verjün¬ gung setzt sich jeweils an den Rändern der Ausnehmung in der Auflage 42 fort. Dies führt zu einem V-förmigen Profil des Falzbereiches 40. In anderen Worten wird dieses V-förmige Profil des Falzbereiches 40 durch das Zusammenwirken eines Förderrollenpaars gebildet, wobei das V-förmige Profil durch die Ausnehmung der Auflage 42 fortgesetzt wird.In the exemplary embodiment described, both the transport rollers 54a-54g and the pressure rollers 56a-56g each have approximately the shape of a truncated cone. As can be seen in FIGS. 1 and 2, the rollers are composed of a cylindrical base which tapers conically towards the folding sword. This conical tapering continues at the edges of the recess in the support 42. This leads to a V-shaped profile of the fold area 40. In other words, this V-shaped profile of the fold area 40 is formed by the interaction of a pair of conveyor rollers, the V-shaped profile being continued through the recess of the support 42.
Wie es in Fig. 3 zu sehen ist, sind die Aussparungen 38a - 38e, die in dem Falzschwert 34 vorgesehen sind, jeweils be¬ züglich der Transportrollendrehachsen 62a - 62g in Schwert¬ richtung zentriert. Neben dem jeweils äußersten Förderrol¬ lenpaar 54a, 56a bzw. 54g, 56g sind zylindrische Preßrollen 68a, 68b, 68c, 68d (68c, 68d nicht gezeigt) paarweise ange¬ ordnet. Die gegenseitige Ausrichtung der paarweise angeord¬ neten zylindrischen Preßrollen entspricht der der Förder¬ rollenpaare. Die zylindrischen Preßrollen 68a, 68b werden jeweils durch eine Antriebsvorrichtung 70a, 70b für die zylindrischen Preßrollen um eine jeweilige Drehachse der zylindrischen Preßrollen 72a, 72b angetrieben. Die nicht ge¬ zeigten zylindrischen Preßrollen 68c, 68d sind jeweils zu den zylindrischen Preßrollen 68c, 68d hin vorgespannt.As can be seen in FIG. 3, the cutouts 38a-38e, which are provided in the folding sword 34, are each centered in the sword direction with respect to the transport roller axes of rotation 62a-62g. In addition to the outermost pair of conveyor rollers 54a, 56a and 54g, 56g, cylindrical pressure rollers 68a, 68b, 68c, 68d (68c, 68d not shown) are arranged in pairs. The mutual alignment of the paired cylindrical press rollers corresponds to that of the conveyor roller pairs. The cylindrical press rollers 68a, 68b are each driven by a drive device 70a, 70b for the cylindrical press rollers about a respective axis of rotation of the cylindrical press rollers 72a, 72b. The cylindrical press rolls 68c, 68d, not shown, are each prestressed toward the cylindrical press rolls 68c, 68d.
Im Anschluß wird die Funktionsweise eines bevorzugten Aus¬ führungsbeispiels des erfindungsgemäßen Schwertfalzwerkes 10 detailliert erläutert.The mode of operation of a preferred exemplary embodiment of the sword folding mechanism 10 according to the invention is explained in detail below.
Nachdem das Blattgut 44, das gefalzt (z.B. der erste Falz 46) oder ungefalzt sein kann, mittels der Zuführvorrichtung 12 derart über den Falzbereich 40 transportiert worden ist, daß das Blattgut 44 mit dem Anschlag 42 in Eingriff ist, findet der Falzvorgang statt.After the sheet material 44, which can be folded (eg the first fold 46) or unfolded, has been transported over the fold area 40 by means of the feed device 12 in such a way that the sheet material 44 engages with the stop 42, the folding process takes place.
Fig. 1 zeigt den Zustand eines bevorzugten Ausführungsbei¬ spiels des erfindungsgemäßen Schwertfalzwerkes 10 unmittel¬ bar bevor der Falzvorgang beginnt. Die Hebelanordnung 22 und das mit derselben über den Falzschwerthalter 32 verbundene Falzschwert 34 befinden sich bezüglich der Auflage 42 in ihrer maximalen Auslenkung. Diese maximale Auslenkung ist durch die Größe eines Nockens gegeben, der an einem be¬ stimmten Umfangsbereich der Kurvenscheiben 28a, 28b vorge¬ sehen ist. Eine gemeinsame Drehung der Kurvenscheiben 28a, 28b bewirkt gleichfalls eine Drehung der Läufer 26a, 26b in der entgegengesetzten Drehrichtung, was dazu führt, daß sich die miteinander fest verbundenen Hebelarme 30a, 30b, die um die Hebelkippachse 24 drehbar gelagert sind, in den Falzbe¬ reich 40 absenken. Dadurch kommt die Falzkante 36 des Falz¬ schwertes 34 entlang der Kontaktlinie 52 in Kontakt mit dem Blattgut 44. Bei fortgesetzter Drehung der Kurvenscheiben 28a, 28b drückt die Falzkante das Blattgut immer tiefer in den Falzbereich hinein, wodurch die Bereiche des Blattguts, die sich außerhalb des Falzbereiches befinden, V-förmig auf¬ gerichtet werden, wie es in Fig. 2 zu sehen ist.1 shows the state of a preferred exemplary embodiment of the sword folding mechanism 10 according to the invention immediately before the folding process begins. The lever arrangement 22 and the folding sword 34 connected to it via the folding sword holder 32 are in their maximum deflection with respect to the support 42. This maximum deflection is given by the size of a cam which is provided on a certain circumferential area of the cam disks 28a, 28b. A joint rotation of the cam disks 28a, 28b likewise causes the rotors 26a, 26b to rotate in the opposite direction of rotation, which leads to the fact that the lever arms 30a, 30b, which are fixedly connected to one another and are rotatably mounted about the lever tilt axis 24, lie in the folds lower rich 40. As a result, the folding edge 36 of the folding blade 34 comes into contact with the sheet material 44 along the contact line 52. As the cam disks 28a, 28b continue to rotate, the folding edge presses the sheet material ever deeper into the folding area, as a result of which the areas of the sheet material which are outside of the fold area are located in a V-shape, as can be seen in FIG. 2.
Bei noch weiterer Drehung der Kurvenscheibe 28a, 28b wird das Blatt, wie es in Fig. 2 zu sehen ist, durch das Falz¬ schwert 34 zwischen die jeweiligen Förderrollenpaare 54a, 56a - 54g, 56g gedrückt. Die Aussparungen 38a - 38e verhin¬ dern, daß das Falzschwert 34 in dieser Position, die als die Falzposition bezeichnet wird, nicht von den Förderrollenpaa¬ ren in Eingriff genommen wird. Die zwischen den Aussparungen 38a - 38e vorhandenen Bereiche der Falzkante 36 bewirken das Drücken des Papiers zwischen die Förderrollenpaare gegen die durch die jeweiligen Anpreßvorrichtungen 66b - 66f ausgeübte Vorspannungskraft. Das zu falzende Blattgut 44 ist nun durch die einzelnen Förderrollenpaare aufgrund der durch die ein¬ zelnen Anpreßvorrichtungen ausgeübten Vorspannungskraft fest in Eingriff genommen. Deshalb kann die Hebelanordnung 22 wieder angehoben werden, ohne daß das Blattgut außer Ein- griff mit dem Förderrollenpaar gebracht wird. Das Falz¬ schwert 34 verläßt somit wieder den Falzbereich 40, wonach ein neuer Falzzyklus beginnen kann.When the cam disk 28a, 28b is rotated still further, the sheet, as can be seen in FIG. 2, is pressed by the folding sword 34 between the respective pairs of conveyor rollers 54a, 56a-54g, 56g. The cutouts 38a-38e prevent the folding blade 34 from being engaged by the conveyor roller pairs in this position, which is referred to as the folding position. The areas of the folding edge 36 present between the cutouts 38a-38e cause the paper to be pressed between the pairs of conveyor rollers against the biasing force exerted by the respective pressing devices 66b-66f. The sheet material 44 to be folded is now firmly engaged by the individual pairs of conveyor rollers due to the pretensioning force exerted by the individual pressing devices. Therefore, the lever assembly 22 can be raised again without the sheet material except handle is brought with the pair of conveyor rollers. The folding sword 34 thus leaves the folding area 40 again, after which a new folding cycle can begin.
Abhängig von der Drehrichtung der Transportrollenantriebe 60a - 60g kann das von den Förderrollenpaaren in Eingriff genommene V-förmig aufgerichtete Blattgut bezüglich Fig. 1 in Richtung der zylindrischen Preßrolle 68a oder in Richtung der zylindrischen Preßrolle 68b seitlich aus dem Falzbereich heraus gefördert werden. Durch dieses seitliche Fördern aus dem Falzbereich 40 wird der zweite Falz 48, der zu dem Zeit¬ punkt, zu dem das Falzschwert 34 wieder aus dem Falzbereich 40 bewegt wurde, lediglich an Berührungslinien der einzelnen Transportrollen 54a - 54g und der einzelnen Anpreßrollen 56a - 56g gewissermaßen vorbereitet wurde, durch die einzelnen Förderrollenpaare durchgehend ausgeführt. Um die Qualität des nun durchgehend ausgeführten zweiten Falzes 48 weiter zu steigern, läuft das Blatt durch das Paar der zylindrischen Preßrollen 68a, 68b, das an der Seite angeordnet ist, an der das gefalzte Blattgut 44 aus dem Falzbereich herausgefördert wird.Depending on the direction of rotation of the transport roller drives 60a-60g, the V-shaped sheet material engaged by the pairs of conveyor rollers can be conveyed laterally out of the fold region in the direction of the cylindrical pressure roller 68a or in the direction of the cylindrical pressure roller 68b. As a result of this lateral conveying from the folding area 40, the second fold 48, which at the time when the folding sword 34 was again moved out of the folding area 40, becomes only on contact lines of the individual transport rollers 54a-54g and the individual pressure rollers 56a-56g was prepared to a certain extent by the individual pairs of conveyor rollers. In order to further increase the quality of the second fold 48 which is now carried out continuously, the sheet runs through the pair of cylindrical press rollers 68a, 68b which is arranged on the side on which the folded sheet material 44 is conveyed out of the fold area.
Zur weiteren Verarbeitung des gefalzten Blattguts 44 in ei¬ ner Papierverarbeitungsstraße, von der das Schwertfalzwerk 10 gemäß der vorliegenden Erfindung einen Teil darstellt, erweist es sich als günstig, daß sich das Blatt in einer aufgerichteten, im wesentlichen senkrechten Stellung befin¬ det, wodurch es möglich ist, durch einfache Mittel das Blatt auf die eine beispielsweise bedruckte Seite oder auf die an¬ dere beispielsweise unbedruckte Seite zu legen, wie es von der nachfolgenden Blattgutverarbeitung gefordert wird.For further processing of the folded sheet material 44 in a paper processing line, of which the sword folding unit 10 according to the present invention is a part, it proves advantageous that the sheet is in an erected, essentially vertical position, whereby it it is possible, by simple means, to lay the sheet on one side, for example printed, or on the other side, for example unprinted, as is required by the subsequent sheet material processing.
Zusammenfassend läßt sich sagen, daß das Schwertfalzwerk 10 gemäß der vorliegenden Erfindung nicht nur die Falzfunktion, sondern auch das rechtwinklige Umlenken und das Aufrichten des Blattguts in einer einzigen Vorrichtung ausführt.In summary it can be said that the sword folding unit 10 according to the present invention not only performs the folding function, but also the right-angled deflection and the erection of the sheet material in a single device.
In Abweichung von dem gezeigten Ausführungsbeispiel exi- stiert eine Vielzahl verschiedener Modifikationen des Schwertfalzwerks 10 der vorliegenden Erfindung.In deviation from the exemplary embodiment shown, There are a variety of different modifications to the sword folder 10 of the present invention.
So kann beispielsweise die Zuführungsvorrichtung 12 wegge¬ lassen werden, da eine in einer Papierverarbeitungsstraße vor dem Schwertfalzwerk 10 geschaltete Vorrichtung das Blattgut 44 direkt in das Schwertfalzwerk 10 einspeisen kann. Die Hebelanordnung 22 muß dann anderweitig befestigt und mit der Blattgutzuführungsrate synchronisiert werden.For example, the feed device 12 can be omitted since a device connected in a paper processing line in front of the sword folding unit 10 can feed the sheet material 44 directly into the sword folding unit 10. The lever assembly 22 must then be otherwise secured and synchronized with the sheet feed rate.
Ferner ist es nicht notwendig, daß daε Schwertfalzwerk im wesentlichen horizontal ausgerichtet ist. Es kann auch bei¬ spielsweise in einer bestimmten Weise geneigt sein, wie es für eine spezielle Anwendung erforderlich ist.Furthermore, it is not necessary for the sword folding mechanism to be oriented essentially horizontally. It can also be inclined, for example, in a certain way, as is required for a special application.
Das Falzschwert 34 muß nicht an der Hebelanordnung 22 auf¬ gehängt sein, sondern es kann anderweitig unabhängig von der Zuführvorrichtung 12 aufgehängt sein und in einem beliebigen Winkel, der nicht parallel zum Blattgut 44 ist, auf dasselbe auftreffen. Darüber hinaus ist es für die vorliegende Erfin¬ dung unwesentlich, ob sich die Ausnehmungen von der Falzkan¬ te 36 bis zum Falzschwerthalter 32 erstrecken, oder über¬ haupt nicht vorhanden sind, soweit die Oberflächen der Transportrollen 54a - 54g oder Anpreßrollen 56a - 56g derart ausgeführt sind, daß das Blattgut 44 in Eingriff mit dem Förderrollenpaar bleibt, wenn das Falzschwert 34 aus dem Falzbereich 40 herausbewegt wird.The folding sword 34 does not have to be suspended from the lever arrangement 22, but can otherwise be suspended independently of the feed device 12 and strike the same at any angle that is not parallel to the sheet material 44. Furthermore, it is immaterial to the present invention whether the recesses extend from the folding edge 36 to the folding sword holder 32 or are not present at all, insofar as the surfaces of the transport rollers 54a-54g or pressure rollers 56a-56g are such are carried out that the sheet material 44 remains in engagement with the pair of conveyor rollers when the folding blade 34 is moved out of the folding area 40.
Obwohl mehrere Förderrollenpaare gezeigt sind, ist ein För¬ derrollenpaar in Verbindung mit zylindrischen Preßrollen 68a, 68b ausreichend, um einen durchgehenden Falz des Blatt¬ guts 44 herzustellen. Ebenso ist es möglich, die zylindri¬ schen Preßrollen 68a, 68b wegzulassen, da der durchgehende Falz bereits durch die Förderrollenpaare erzeugt wird. Über¬ dies ist es nicht notwendig, daß die Blattgutfördereinrich¬ tung in Form von Förderrollenpaaren ausgeführt ist, da eben¬ so ein durchgehendes elastisches Förderband vorgesehen sein kann, dessen Oberfläche, die mit dem Blattgut 44 in Kontakt kommt, derart ausgeführt sein kann, daß sie mit dem Blattgut 44 in Eingriff bleibt, wenn das Falzschwert 34 aus dem Falz¬ bereich 40 entfernt wird. Die beschriebene in Richtung der Auflage 42 vorhandene Verkleinerung deε Durchmessers der Transportrollen 54a - 54g bzw. der Anpreßrollen 56a - 56g muß nicht linear sein, sondern der Querschnitt kann auch sphärisch, parabolisch oder auf eine andere Art und Weise durchgehend verkleinert werden.Although several pairs of conveyor rollers are shown, one pair of conveyor rollers in connection with cylindrical pressure rollers 68a, 68b is sufficient to produce a continuous fold of the sheet material 44. It is also possible to omit the cylindrical press rollers 68a, 68b, since the continuous fold is already generated by the pairs of conveyor rollers. Moreover, it is not necessary for the sheet material conveying device to be designed in the form of pairs of conveyor rollers, since a continuous elastic conveyor belt can also be provided, the surface of which is in contact with the sheet material 44 comes, can be designed such that it remains in engagement with the sheet material 44 when the folding blade 34 is removed from the folding area 40. The described reduction in the direction of the support 42 of the diameter of the transport rollers 54a-54g or of the pressure rollers 56a-56g does not have to be linear, but the cross-section can also be reduced continuously in a spherical, parabolic or other manner.
Schließlich ist die Auflage 42 und der Anschlag 50, die be¬ züglich eines bevorzugten Ausführungsbeispiels des Schwert- falzwerkes 10 beschrieben worden sind, nicht unbedingt er¬ forderlich, da das Blattgut 44 auch beispielsweise durch ei¬ ne definierte kinetische Energie, die das Blattgut von der Zuführvorrichtung erhalten hat, in eine bestimmt Position direkt über den Förderrollenpaaren plaziert werden kann. Finally, the support 42 and the stop 50, which have been described in relation to a preferred exemplary embodiment of the sword folding mechanism 10, are not absolutely necessary, since the sheet material 44 is also, for example, by a defined kinetic energy which the sheet material from received the feed device, can be placed in a certain position directly above the pairs of conveyor rollers.

Claims

Patentansprüche claims
1. Schwertfalzwerk (10) zum Falzen eines Blattgutes (44) , mit folgenden Merkmalen:1. sword folding unit (10) for folding a sheet material (44), with the following features:
einer Blattgutzuführungsvorrichtung (12) zum Zuführen des Blattgutes (44) in einer ersten Richtung;a sheet feed device (12) for feeding the sheet goods (44) in a first direction;
einer Falzvorrichtung zum Falzen des Blattguteε (44) ; unda folding device for folding the sheet material (44); and
einer Blattgutfördereinrichtung (54a - 54g, 56a - 56g) zum Fördern des Blattguts (44) , die zumindest ein Paar von umlaufenden Förderbaugliedern (54a, 56a) aufweist, deren Umlaufachsen (62a, 64a) in einer zweiten Richtung angeordnet sind, die im wesentlichen senkrecht zu der ersten Richtung ist,a sheet material conveying device (54a - 54g, 56a - 56g) for conveying the sheet material (44), which has at least one pair of rotating conveying members (54a, 56a), the rotating axes (62a, 64a) of which are arranged in a second direction, which are essentially is perpendicular to the first direction
wobei die Falzvorrichtung in ihrer Falzposition das ge¬ falzte Blattgut (44) zwischen die Förderbauglieder des zumindest einen Paars von Förderbaugliedern schiebt,the folding device in its folding position pushing the folded sheet material (44) between the conveyor members of the at least one pair of conveyor members,
dadurch gekennzeichnet, daßcharacterized in that
das Blattgut (44) bis zu einem Anschlag (50) zugeführt wird;the sheet material (44) is fed up to a stop (50);
die Falzvorrichtung ein Schwert (34) aufweist, das sich in einer dritten Richtung erstreckt, die im wesentlichen senkrecht zu der ersten und der zweiten Richtung ist; undthe folder comprises a sword (34) extending in a third direction that is substantially perpendicular to the first and second directions; and
durch Betätigung der Förderbauglieder (54a, 56a) das Blattgut (44) in der dritten Richtung förderbar ist.the sheet material (44) can be conveyed in the third direction by actuating the conveying members (54a, 56a).
2. Schwertfalzwerk (10) nach Anspruch 1, dadurch gekenn¬ zeichnet, daß die Förderbauglieder (54a, 56a) der Blattgutförderein¬ richtung (54a - 54g, 56a - 56g) ein Paar von Förderrol¬ len (54a, 56a) sind, deren Rollenachsen (62a, 64a) in der zweiten Richtung angeordnet sind.2. sword folding unit (10) according to claim 1, characterized gekenn¬ characterized in that the conveying members (54a, 56a) of the sheet material conveying device (54a - 54g, 56a - 56g) are a pair of conveying rollers (54a, 56a), the roller axes (62a, 64a) of which are arranged in the second direction.
3. Schwertfalzwerk (10) nach Anspruch 2, dadurch gekenn¬ zeichnet, daß3. sword folding unit (10) according to claim 2, characterized gekenn¬ characterized in that
eine Mehrzahl von in der dritten Richtung beabstandeten Förderrollenpaaren (54a - 54g, 56a - 56g) vorgesehen ist.a plurality of pairs of conveyor rollers (54a-54g, 56a-56g) spaced apart in the third direction are provided.
4. Schwertfalzwerk (10) nach einem der Ansprüche 2 bis 3, dadurch gekennzeichnet, daß4. sword folding unit (10) according to any one of claims 2 to 3, characterized in that
die Rollen (54a - 54g, 56a - 56g) der Förderrollenpaare kegelstumpfförmig sind.the rollers (54a - 54g, 56a - 56g) of the conveyor roller pairs are frustoconical.
5. Schwertfalzwerk (10) nach einem der Ansprüche 2 bis 3, dadurch gekennzeichnet, daß5. sword folding unit (10) according to one of claims 2 to 3, characterized in that
die Rollen (54a - 54g, 56a - 56g) der Förderrollenpaare sich zu dem Schwert (34) hin verjüngen.the rollers (54a - 54g, 56a - 56g) of the conveyor roller pairs taper towards the sword (34).
6. Schwertfalzwerk (10) nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, daß6. sword folding unit (10) according to one of claims 2 to 5, characterized in that
eine Rolle (54a - 54g) eines jeden Förderrollenpaares antreibbar ist, und die andere Rolle (56a - 56g) in Richtung auf die eine Rolle federnd vorgespannt ist.one roller (54a - 54g) of each pair of conveyor rollers can be driven, and the other roller (56a - 56g) in the direction towards which a roller is resiliently biased.
7. Schwertfalzwerk (10) nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, daß7. sword folding unit (10) according to one of claims 2 to 6, characterized in that
ein Paar zylindrischer Preßrollen (68a, 68b) in der dritten Richtung von dem Förderrollenpaar (54a, 56a, 54g, 56g) beabstandet außerhalb des Falzbereichs (40) der Schwertfalzvorrichtung angeordnet ist.a pair of cylindrical press rollers (68a, 68b) spaced in the third direction from the pair of conveyor rollers (54a, 56a, 54g, 56g) outside the fold area (40) the sword folding device is arranged.
8. Schwertfalzwerk (10) nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß8. sword folding unit (10) according to any one of claims 1 to 7, characterized in that
der Anschlag (50) an einer Blattgutauflage (42) zwischen der Blattgutzuführungsvorrichtung (12) und dem Schwert (34) angeordnet ist, wobei die Blattgutauflage (42) eine Ausnehmung aufweist, durch die sich das Schwert (34) in seiner Falzposition zwischen die Förderbauglieder der Blattgutfördereinrichtung (54a - 54g, 56a - 56g) er¬ streckt.the stop (50) is arranged on a sheet support (42) between the sheet feed device (12) and the sword (34), the sheet support (42) having a recess through which the sword (34) in its folding position between the conveyor members of the sheet material conveying device (54a-54g, 56a-56g).
9. Schwertfalzwerk (10) nach einem der Ansprüche 2 bis 8 in Rückbeziehung auf Anspruch 2, dadurch gekennzeichnet, daß9. sword folding unit (10) according to one of claims 2 to 8 in relation to claim 2, characterized in that
das Schwert (34) mindestens eine Aussparung (38a - 38e) aufweist, die in der Falzposition der SchwertfalzVor¬ richtung in einem gegenseitigen Kontaktbereich der Rol¬ len (54a - 54g, 56a - 56g) des Förderrollenpaares liegt. the sword (34) has at least one recess (38a - 38e) which, in the folding position of the sword folding device, lies in a mutual contact area of the rollers (54a - 54g, 56a - 56g) of the conveyor roller pair.
EP97903356A 1996-02-23 1997-02-21 Knife folder Expired - Lifetime EP0883566B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19606821 1996-02-23
DE19606821A DE19606821A1 (en) 1996-02-23 1996-02-23 Sword folding unit
PCT/EP1997/000851 WO1997030925A1 (en) 1996-02-23 1997-02-21 Knife folder

Publications (2)

Publication Number Publication Date
EP0883566A1 true EP0883566A1 (en) 1998-12-16
EP0883566B1 EP0883566B1 (en) 1999-12-29

Family

ID=7786248

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97903356A Expired - Lifetime EP0883566B1 (en) 1996-02-23 1997-02-21 Knife folder

Country Status (6)

Country Link
US (1) US6074332A (en)
EP (1) EP0883566B1 (en)
JP (1) JP3213948B2 (en)
DE (2) DE19606821A1 (en)
ES (1) ES2141593T3 (en)
WO (1) WO1997030925A1 (en)

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Also Published As

Publication number Publication date
DE19606821A1 (en) 1997-08-28
JPH11506719A (en) 1999-06-15
EP0883566B1 (en) 1999-12-29
US6074332A (en) 2000-06-13
ES2141593T3 (en) 2000-03-16
JP3213948B2 (en) 2001-10-02
WO1997030925A1 (en) 1997-08-28
DE59700930D1 (en) 2000-02-03

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