EP0418456B1 - Device for guiding moving sheets as well as their use - Google Patents

Device for guiding moving sheets as well as their use Download PDF

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Publication number
EP0418456B1
EP0418456B1 EP90104711A EP90104711A EP0418456B1 EP 0418456 B1 EP0418456 B1 EP 0418456B1 EP 90104711 A EP90104711 A EP 90104711A EP 90104711 A EP90104711 A EP 90104711A EP 0418456 B1 EP0418456 B1 EP 0418456B1
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EP
European Patent Office
Prior art keywords
balls
sheets
rollers
ball
sheet
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Expired - Lifetime
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EP90104711A
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German (de)
French (fr)
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EP0418456A1 (en
Inventor
Winfried Manhart
Harald Witt
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Stahl GmbH and Co Maschinenfabrik
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Stahl GmbH and Co Maschinenfabrik
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Publication of EP0418456A1 publication Critical patent/EP0418456A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00Registering, e.g. orientating, articles; Devices therefor
    • B65H9/16Inclined tape, roller, or like article-forwarding side registers
    • B65H9/166Roller

Definitions

  • the invention relates to a device for guiding sheets of paper or other sheet-shaped materials which are moved by drivable conveying means, with a ruler and with a ball bar running parallel to the ruler, the individual balls of which rest non-positively on the conveying means and the sheet moving above them.
  • the invention further relates to the use of this device.
  • a device of the type mentioned is known, for example, from the applicant's "STAHL INFORMATION", No. 12/86, page 18 (1986).
  • the individual balls of the ball used are used for holding down and guiding the edges with precision over the conveying means, for example cross rollers or conveyor belts, which come at high speed, for example coming from an upstream folder, a downstream one Folding unit or other machine unit, along the straightening ruler aligned at an angle.
  • the individual balls of the ball bar are located in the middle above the diagonal rollers or conveyor belts in sleeves that are open at the top and bottom and lie on the diagonal rollers or conveyor belts under their own weight.
  • the leading edge of the sheets which are usually, but not necessarily, moved horizontally causes the balls they bump to jump up, the jump height being dependent on the speed and thickness of the sheets required, and the sheet thickness in turn being dependent on the number of sheets and the paper volume.
  • the jump height of the individual balls is limited in the known device by a continuous stop bar which is arranged above the sleeves and at the same time prevents the balls from falling out.
  • the distance of this bar is adjustable, which means that the height of the balls can be limited to a fixed height.
  • This known device has two major disadvantages: in the phase of the balls jumping up, the individual balls briefly lose contact both with the driven conveying means and with the sheets moving over them.
  • the frictional connection caused by the weight of the balls is therefore interrupted briefly but periodically, both between the balls and the conveying means and between the balls and the conveyed sheets.
  • the starting force component of the folded sheet towards the straightening ruler is periodically changed, that is to say greater in the case of a force fit and less without a force fit, as a result of which the conveyed sheets can migrate from the straightening ruler.
  • a conveyor table for feeding or transverse conveying of sheets is known, which is a device for guiding sheets moved by drivable conveying means Paper or other sheet-like materials with a ruler and with a parallel to the ruler ball bar.
  • the individual balls of the ball bar are freely movable in ball cages and bear with their own weight on the conveying means, namely diagonal rollers.
  • the springing up of the balls kicked by the conveyed sheets is limited by springs.
  • the ball bar can be pivoted as a whole about an axis running parallel to the straightedge in order to facilitate access to the straightedge.
  • the invention has for its object to avoid the disadvantages described and to provide a device of the type mentioned, with which it is possible to keep the starting force component of the conveyed sheet towards the ruler as well as the peripheral speed and direction of rotation of the balls as constant as possible and thereby the risk of To reduce migration of the sheets from the ruler.
  • rollers are arranged as rotatable load elements which positively touch the surface of the balls assigned to them.
  • the load elements provided according to the invention are under the action of a spring force ensures that the frictional connection between these load elements and the balls as well as between the balls and the conveying means or sheet located under the balls is never interrupted, even if not the front edges of the sheets conveyed at high speed hit the balls.
  • the impact imparted by the leading edge of the respective ball still causes the ball to deflect in a direction perpendicular to the direction of conveyance of the sheet, but because the load element resting on the ball is under the action of a spring force, the load element can do so without interrupting the frictional connection also dodge.
  • the starting force component of the sheet remains unchanged towards the straightening ruler, so that the conveyed sheets cannot migrate from the straightening ruler and thus enter the subsequent unit at an angle, for example a cross fold folder. False folds and rejects are almost completely avoided. Since the balls are constantly in frictional contact with the load elements resting on them, the peripheral speed of the balls also remains practically constant, and they receive no impulse that could change their direction of rotation.
  • rollers are rotatably mounted on axes which are perpendicular to the straightedge and to the conveying direction of the sheets. This means that the rollers and thus also the non-positively connected balls receive a direction of rotation that corresponds exactly to the conveying direction and runs parallel to the longitudinal axis of the rule.
  • the load elements are fastened to a bar connected to the rule by means of levers and the levers are arranged pivotably in a vertical plane, the levers preferably being pivoted about bolts under the action of torsion springs.
  • the device is preferably used according to the invention for guiding, aligning and holding down folded sheets in folding and printing machines, conveying tables and sheet feeders, the conveying tables being able to be both inclined roller tables and belt tables and the conveying plane of these tables does not necessarily have to run horizontally.
  • Corresponding housings are arranged so that they lie on a curved surface, so that they can also be used, for example, in the area of the deflecting drum of a round pile feeder or can be used wherever sheets are conveyed in a singular form or in the form of a shingled stream and thereby to be led, aligned and / or held down.
  • the embodiment of the device according to the invention shown in the drawing is used for guiding, aligning and holding down folded sheets 1 which are guided at high speed over an inclined roller conveyor table 3.
  • the folded sheets 1 come from a first folding or printing unit 2, arrive on the conveyor table 3, the diagonal rollers of which are driven by a motor, and are fed with the folding in advance to a second folding or printing unit 4.
  • a guideline 7 is used for the angular alignment and guidance of the folded sheets 1.
  • a ball bar 8 with a plurality of balls 13 is fastened to the rule 7, the balls 13 being located in individual sleeves 9 which are open at the top and bottom and thereby permit vertical movement of the balls without impairing their rotatability.
  • the ball bar 8 is arranged so that the individual balls 13 each lie centrally over the diagonal rollers used as conveying means in the present case and are in frictional contact with these motor-driven diagonal rollers. For reasons of clarity, only the foremost three diagonal rollers 10, 11, 12 of the diagonal roller conveyor table 3 are shown in FIGS. 1 and 2.
  • a bar 23 is screwed onto the straightedge 7 by means of cylinder screws 24.
  • Bolts 16 are fastened in the bar 23, about which levers 15 are rotatably mounted, with rollers 14 being rotatably fastened to the levers 15 by means of shoulder screws 20, ball bearings 21 and spacer sleeves 22 (FIG. 2).
  • the rollers 14 are arranged so that each of them is associated with a ball 13 and touches the surface of the ball associated with them non-positively.
  • the frictional connection is effected by spring force.
  • torsion springs 17 are provided on the bolts 16, which are preloaded and held by spring clamping sleeves 18 and cylindrical pins 19.
  • the ball 13 After passing through the folding sheet 1, the ball 13 falls back into its original position under the action of the spring force of the torsion spring 17 without the non-positive connection being interrupted.
  • the start-up force component of the individual folded sheets 1 in the direction of the guideline 7 thus remains constant and is not noticeably influenced by the necessary dodging of the balls 13. In this way, the folded sheets 1 reach the nip of the inlet rollers 5, 6 of the subsequent folding or printing unit 4 at an angle.
  • the ball strips 8 can be arranged centrally above conveyor belts which run parallel to the guide ruler 7, the conveying plane not having to be horizontal, but also being able to rise or the arch being curved Surface can be promoted and the ball bars are then curved accordingly.

Description

Die Erfindung betrifft eine Vorrichtung zum Führen von durch antreibbare Fördermittel bewegten Bogen aus Papier oder anderen blattförmigen Werkstoffen, mit einem Richtlineal und mit einer parallel zum Richtlineal verlaufenden Kugelleiste, deren einzelne Kugeln kraftschlüssig auf den Fördermitteln und den darüber bewegten Bogen aufliegen. Die Erfindung betrifft ferner die Verwendung dieser Vorrichtung.The invention relates to a device for guiding sheets of paper or other sheet-shaped materials which are moved by drivable conveying means, with a ruler and with a ball bar running parallel to the ruler, the individual balls of which rest non-positively on the conveying means and the sheet moving above them. The invention further relates to the use of this device.

Eine Vorrichtung der genannten Gattung ist beispielsweise aus der Firmenschrift der Anmelderin "STAHL INFORMATION", Nr. 12/86, Seite 18 (1986) bekannt. Bei der bekannten Vorrichtung dienen die einzelnen Kugeln der verwendeten Kugel Leiste der Niederhaltung und kantengenauen Führung der über die Fordermittel, z.B. Schrägwalzen oder Transportbänder, geführten Bogen, die unter hoher Geschwindigkeit, beispielsweise von einem vorgeordneten Falzwerk kommend, einem nachgeordneten Falzwerk oder sonstigen Maschinenaggregat, an dem Richtlineal entlang winkelgerecht ausgerichtet, zugeführt werden. Die einzelnen Kugeln der Kugelleiste befinden sich mittig über den Schrägwalzen oder Forderbandern in nach oben und unten offenen Hülsen und liegen unter ihrem Eigengewicht auf den Schrägwalzen oder Transportbändern auf.A device of the type mentioned is known, for example, from the applicant's "STAHL INFORMATION", No. 12/86, page 18 (1986). In the known device, the individual balls of the ball used are used for holding down and guiding the edges with precision over the conveying means, for example cross rollers or conveyor belts, which come at high speed, for example coming from an upstream folder, a downstream one Folding unit or other machine unit, along the straightening ruler aligned at an angle. The individual balls of the ball bar are located in the middle above the diagonal rollers or conveyor belts in sleeves that are open at the top and bottom and lie on the diagonal rollers or conveyor belts under their own weight.

Die Vorderkante der in der Regel, aber nicht notwendigerweise horizontal bewegten Bogen bewirkt ein Hochspringen der von ihr angestoßenen Kugeln, wobei die Sprunghöhe abhängig ist von der Geschwindigkeit und der Dicke der geforderten Bogen und wobei die Bogendicke wiederum von der Blattzahl und dem Papiervolumen abhängt. Die Sprunghöhe der einzelnen Kugeln wird bei der bekannten Vorrichtung durch eine durchgehende Anschlagleiste begrenzt, die oberhalb der Hülsen angeordnet ist und gleichzeitig das Herausfallen der Kugeln verhindert. Der Abstand dieser Leiste ist einstellbar, wodurch die Sprunghöhe der Kugeln auf eine festgelegte Hohe begrenzt werden kann.The leading edge of the sheets, which are usually, but not necessarily, moved horizontally causes the balls they bump to jump up, the jump height being dependent on the speed and thickness of the sheets required, and the sheet thickness in turn being dependent on the number of sheets and the paper volume. The jump height of the individual balls is limited in the known device by a continuous stop bar which is arranged above the sleeves and at the same time prevents the balls from falling out. The distance of this bar is adjustable, which means that the height of the balls can be limited to a fixed height.

Diese bekannte Vorrichtung besitzt zwei wesentliche Nachteile: In der Phase des Hochspringens der Kugeln verlieren die einzelnen Kugeln kurzfristig den Kontakt sowohl mit den angetriebenen Fördermitteln als auch mit den darüber hinwegbewegten Bogen. Der durch das Eigengewicht der Kugeln bewirkte Kraftschluß wird also kurzfristig, aber periodisch unterbrochen, und zwar sowohl zwischen den Kugeln und den Fördermitteln als auch zwischen den Kugeln und den geförderten Bogen. Hierdurch wird die Anlaufkraftkomponente des Falzbogens zum Richtlineal hin periodisch verändert, d.h. bei Kraftschluß größer und ohne Kraftschluß geringer, wodurch die geförderten Bogen vom RichtLineal abwandern können. Dies wiederum führt dazu, daß die Bogen nicht winkelgerecht das nachfolgende Falzwerk bzw. eine sonstige nachfolgende Haschinenstation erreichen und deshalb unbrauchbar bzw. zu Ausschuß werden. Die Begrenzung der Sprunghöhe mittels einer einfachen Leiste oder eines Blechstreifens hat ferner den wesentlichen Nachteil, daß die Kugeln gegen eine feststehende Fläche prallen und in ihrer Umfangsgeschwindigkeit abgebremst werden und gleichzeitig einen Impuls erhalten, der die ursprüngliche Drehrichtung der Kugeln verändert. Letzteres wirkt sich erneut auf die Anlaufkraftkomponente des Falzbogens zum Richtlineal hin aus und vergrößert die Gefahr, daß die Bogen vom Richtlineal abwandern, wenn die Kugeln nach dem Hochspringen wieder auf die geförderten Bogen herabfallen und unter ihrem Eigengewicht kraftschlüssig auf den Bogen aufliegen.This known device has two major disadvantages: in the phase of the balls jumping up, the individual balls briefly lose contact both with the driven conveying means and with the sheets moving over them. The frictional connection caused by the weight of the balls is therefore interrupted briefly but periodically, both between the balls and the conveying means and between the balls and the conveyed sheets. As a result, the starting force component of the folded sheet towards the straightening ruler is periodically changed, that is to say greater in the case of a force fit and less without a force fit, as a result of which the conveyed sheets can migrate from the straightening ruler. This in turn means that the sheets do not reach the subsequent folding unit or another subsequent machine station at the correct angle and therefore become unusable or are rejected. Limiting the jump height by means of a simple bar or a sheet metal strip also has the major disadvantage that the balls hit a fixed surface and in their peripheral speed are braked and at the same time receive an impulse that changes the original direction of rotation of the balls. The latter again affects the starting force component of the folded sheet towards the ruler and increases the risk that the sheets will drift away from the ruler if the balls fall back onto the conveyed sheets after jumping up and lie non-positively on the sheets under their own weight.

Aus der DE-B-S 17 225 XII/15e, bekanntgemacht im Patentblatt 1951, Seite 1821, die dem Oberbegriff des Anspruchs 1 entspricht, ist ein Fördertisch zum Zuführen oder Querfördern von Bogen bekannt, der eine Vorrichtung zum Führen von durch antreibbare Fördermittel bewegten Bogen aus Papier oder anderen blattförmigen Werkstoffen mit einem Richtlineal und mit einer parallel zum Richtlineal verlaufenden Kugelleiste umfaßt. Die einzelnen Kugeln der Kugelleiste sitzen frei beweglich in Kugelkäfigen und lasten mit ihrem Eigengewicht auf den Fördermitteln, nämlich Schrägwalzen. Das Hochspringen der durch die geförderten Bogen angestoßenen Kugeln wird nach oben durch Federn hubbegrenzt. Die Kugelleiste ist als Ganzes um eine parallel zum Richtlineal verlaufende Achse verschwenkbar, um die Zugänglichkeit zum Richtlineal zu erleichtern.From DE-BS 17 225 XII / 15e, made known in patent sheet 1951, page 1821, which corresponds to the preamble of claim 1, a conveyor table for feeding or transverse conveying of sheets is known, which is a device for guiding sheets moved by drivable conveying means Paper or other sheet-like materials with a ruler and with a parallel to the ruler ball bar. The individual balls of the ball bar are freely movable in ball cages and bear with their own weight on the conveying means, namely diagonal rollers. The springing up of the balls kicked by the conveyed sheets is limited by springs. The ball bar can be pivoted as a whole about an axis running parallel to the straightedge in order to facilitate access to the straightedge.

Der Erfindung liegt die Aufgabe zugrunde, die geschilderten Nachteile zu vermeiden und eine Vorrichtung der genannten Gattung zu schaffen, mit der es gelingt, die Anlaufkraftkomponente der geförderten Bogen zum Richtlineal hin sowie die Umfangsgeschwindigkeit und Drehrichtung der Kugeln möglichst konstant zu halten und dadurch die Gefahr des Abwanderns der Bogen vom Richtlineal zu verringern.The invention has for its object to avoid the disadvantages described and to provide a device of the type mentioned, with which it is possible to keep the starting force component of the conveyed sheet towards the ruler as well as the peripheral speed and direction of rotation of the balls as constant as possible and thereby the risk of To reduce migration of the sheets from the ruler.

Diese Aufgabe wird bei einer Vorrichtung der eingangs genannten Gattung erfindungsgemäß dadurch gelöst, daß auf der den Fördermitteln abgewandten Seite der Kugeln unter der Einwirkung einer Federkraft stehend Rollen als drehbare Lastelemente angeordnet sind, die kraftschlüssig die Oberfläche der ihnen zugeordneten Kugeln berühren.This object is achieved according to the invention in a device of the type mentioned at the outset in that, on the side of the balls facing away from the conveying means, under the action of a spring force, rollers are arranged as rotatable load elements which positively touch the surface of the balls assigned to them.

Dadurch, daß die erfindungsgemäß vorgesehenen Lastelemente unter der Einwirkung einer Federkraft stehen, wird erreicht, daß der Kraftschluß sowohl zwischen diesen Lastelementen und den Kugeln als auch zwischen den Kugeln und den unter den Kugeln befindlichen Fördermitteln oder Bogen niemals unterbrochen wird, auch dann nicht, wenn die Vorderkanten der mit hoher Geschwindigkeit geförderten Bogen gegen die Kugeln stoßen. Der durch die Bogenvorderkante der jeweiligen Kugel erteilte Stoß bewirkt zwar nach wie vor ein Ausweichen der Kugel in einer senkrecht zur Förderrichtung der Bogen stehenden Richtung, weil aber das auf der Kugel ruhende Lastelement unter der Einwirkung einer Federkraft steht, kann das Lastelement ohne Unterbrechung des Kraftschlusses ebenfalls ausweichen. Hierdurch bleibt die Anlaufkraftkomponente des Bogens zum Richtlineal hin unverändert, so daß die geförderten Bogen nicht vom Richtlineal abwandern können und somit winkelgerecht in das nachfolgende Aggregat, z.B. ein Kreuzbruchfalzwerk, einlaufen. Fehlfalze und Ausschuß werden hierdurch nahezu vollständig vermieden. Da die Kugeln ständig in kraftschlüssigem Kontakt mit den auf ihnen ruhenden Lastelementen stehen, bleibt auch die Umfangsgeschwindigkeit der Kugeln praktisch konstant, und sie erhalten keinen Impuls, der eine Änderung ihrer Drehrichtung bewirken könnte.The fact that the load elements provided according to the invention are under the action of a spring force ensures that the frictional connection between these load elements and the balls as well as between the balls and the conveying means or sheet located under the balls is never interrupted, even if not the front edges of the sheets conveyed at high speed hit the balls. The impact imparted by the leading edge of the respective ball still causes the ball to deflect in a direction perpendicular to the direction of conveyance of the sheet, but because the load element resting on the ball is under the action of a spring force, the load element can do so without interrupting the frictional connection also dodge. Hereby the starting force component of the sheet remains unchanged towards the straightening ruler, so that the conveyed sheets cannot migrate from the straightening ruler and thus enter the subsequent unit at an angle, for example a cross fold folder. False folds and rejects are almost completely avoided. Since the balls are constantly in frictional contact with the load elements resting on them, the peripheral speed of the balls also remains practically constant, and they receive no impulse that could change their direction of rotation.

Eine vorteilhafte Ausführungsform der erfindungsgemäßen Vorrichtung ist dadurch gekennzeichnet, daß die Rollen auf Achsen drehbar gelagert sind, die senkrecht zum Richtlineal und zur Förderrichtung der Bogen verlaufen. Dies bewirkt nämlich, daß die Rollen und damit auch die kraftschlüssig mit ihnen verbundenen Kugeln eine Drehrichtung erhalten, die genau der Förderrichtung entspricht und parallel zur Längsachse des Richtlineals verläuft.An advantageous embodiment of the device according to the invention is characterized in that the rollers are rotatably mounted on axes which are perpendicular to the straightedge and to the conveying direction of the sheets. This means that the rollers and thus also the non-positively connected balls receive a direction of rotation that corresponds exactly to the conveying direction and runs parallel to the longitudinal axis of the rule.

Zweckmäßig ist ferner eine Ausführungsform der erfindungsgemäßen Vorrichtung, bei der die Lastelemente an einer mit dem Richtlineal verbundenen Leiste mittels Hebel befestigt sind und die Hebel in einer vertikalen Ebene schwenkbar angeordnet sind, wobei die Hebel vorzugsweise unter der Einwirkung von Torsionsfedern um Bolzen schwenkbar angeordnet sind.Also expedient is an embodiment of the device according to the invention in which the load elements are fastened to a bar connected to the rule by means of levers and the levers are arranged pivotably in a vertical plane, the levers preferably being pivoted about bolts under the action of torsion springs.

Die Vorrichtung wird erfindungsgemäß vorzugsweise zum Führen, Ausrichten und Niederhalten von Falzbogen in Falz- und Druckmaschinen, Fördertischen und Bogenanlegern verwendet, wobei die Fördertische sowohl Schrägwalzentische als auch Bändertische sein können und wobei die Förderebene dieser Tische nicht notwendigerweise horizontal verlaufen muß.The device is preferably used according to the invention for guiding, aligning and holding down folded sheets in folding and printing machines, conveying tables and sheet feeders, the conveying tables being able to be both inclined roller tables and belt tables and the conveying plane of these tables does not necessarily have to run horizontally.

Im Rahmen des fachmännischen Könnens liegen auch Abwandlungen der erfindungsgemäßen Vorrichtung, bei denen die Kugeln in einem entsprechenden Gehäuse so angeordnet sind, daß sie auf einer gekrümmten Fläche liegen, so daß sie beispielsweise auch im Bereich der Umlenktrommel eines Rundstapelanlegers eingesetzt werden können bzw. überall dort eingesetzt werden können, wo Bogen in vereinzelter Form oder in Form eines Schuppenstroms gefördert werden und dabei geführt, ausgerichtet und/oder niedergehalten werden sollen.Modifications of the device according to the invention, in which the balls are in one, are also within the scope of the skilled person Corresponding housings are arranged so that they lie on a curved surface, so that they can also be used, for example, in the area of the deflecting drum of a round pile feeder or can be used wherever sheets are conveyed in a singular form or in the form of a shingled stream and thereby to be led, aligned and / or held down.

Die Erfindung wird nachfolgend anhand der Zeichnung weiter erläutert:

Fig. 1
ist eine Schnittansicht des vorderen Teils eines Schrägwalzenfördertisches, der einem Falzwerk nachgeordnet ist und die gefalzten Bogen einem Kreuzbruchfalzwerk zuführt, dessen Eingangswalzen schematisch ebenfalls in Figur 1 dargestellt sind. Die geschnittenen Teile der Vorrichtung sind nach Linie A-B in Figur 2 geschnitten;
Fig. 2
ist eine Draufsicht auf die in Figur 1 dargestellten Teile der erfindungsgemäßen Vorrichtung;
Fig. 3
zeigt schematisch die Anordnung der erfindungsgemäßen Vorrichtung innerhalb einer Falzmaschine mit mehreren Falzwerken.
The invention is further explained below with reference to the drawing:
Fig. 1
is a sectional view of the front part of an inclined roller conveyor table, which is arranged downstream of a folding unit and feeds the folded sheets to a cross-fold folding unit, the input rollers of which are also shown schematically in FIG. 1. The cut parts of the device are cut along line AB in Figure 2;
Fig. 2
is a plan view of the parts of the device according to the invention shown in Figure 1;
Fig. 3
shows schematically the arrangement of the device according to the invention within a folding machine with several folding units.

Die in der Zeichnung dargestellte Ausführungsform der erfindungsgemäßen Vorrichtung wird zum Führen, Ausrichten und Niederhalten von Falzbogen 1 verwendet, die mit hoher Geschwindigkeit über einen Schrägwalzenfördertisch 3 geführt werden. Die Falzbogen 1 kommen von einem ersten Falz- oder Druckwerk 2, gelangen auf den Fördertisch 3, dessen Schrägwalzen motorisch angetrieben sind, und werden mit dem Falz voraus einem zweiten Falz- oder Druckwerk 4 zugeführt. Hierbei dient ein Richtlineal 7 der winkelgerechten Ausrichtung und Führung der Falzbogen 1.The embodiment of the device according to the invention shown in the drawing is used for guiding, aligning and holding down folded sheets 1 which are guided at high speed over an inclined roller conveyor table 3. The folded sheets 1 come from a first folding or printing unit 2, arrive on the conveyor table 3, the diagonal rollers of which are driven by a motor, and are fed with the folding in advance to a second folding or printing unit 4. Here, a guideline 7 is used for the angular alignment and guidance of the folded sheets 1.

Am Richtlineal 7 ist eine Kugelleiste 8 mit einer Vielzahl von Kugeln 13 befestigt, wobei sich die Kugeln 13 in einzelnen Hülsen 9 befinden, die nach oben und unten offen sind und dadurch eine vertikale Verschiebung der Kugeln gestatten, ohne ihre Drehbarkeit zu beeinträchtigen. Die Kugelleiste 8 ist so angeordnet, daß die einzelnen Kugeln 13 jeweils mittig über den im vorliegenden Falle als Fördermittel verwendeten Schrägwalzen liegen und mit diesen motorisch angetriebenen Schrägwalzen in kraftschlüssigem Kontakt stehen. Aus Gründen der Übersichtlichkeit sind in den Figuren 1 und 2 nur die vordersten drei Schrägwalzen 10, 11, 12 des Schrägwalzenfördertisches 3 dargestellt.A ball bar 8 with a plurality of balls 13 is fastened to the rule 7, the balls 13 being located in individual sleeves 9 which are open at the top and bottom and thereby permit vertical movement of the balls without impairing their rotatability. The ball bar 8 is arranged so that the individual balls 13 each lie centrally over the diagonal rollers used as conveying means in the present case and are in frictional contact with these motor-driven diagonal rollers. For reasons of clarity, only the foremost three diagonal rollers 10, 11, 12 of the diagonal roller conveyor table 3 are shown in FIGS. 1 and 2.

Auf das Richtlineal 7 ist eine Leiste 23 mittels Zylinderschrauben 24 aufgeschraubt. In der Leiste 23 sind Bolzen 16 befestigt, um welche Hebel 15 drehbar gelagert sind, wobei an den Hebeln 15 Laufrollen 14 mittels Ansatzschrauben 20, Kugellagern 21 und Distanzhülsen 22 (Figur 2) drehbar befestigt sind. Die Laufrollen 14 sind so angeordnet, daß jede von ihnen einer Kugel 13 zugeordnet ist und die Oberfläche der ihnen zugeordneten Kugel kraftschlüssig berührt. Der Kraftschluß wird durch Federkraft bewirkt. Hierzu sind Torsionsfedern 17 auf den Bolzen 16 vorgesehen, welche durch Federspannhülsen 18 und Zylinderstifte 19 vorgespannt und gehalten sind.A bar 23 is screwed onto the straightedge 7 by means of cylinder screws 24. Bolts 16 are fastened in the bar 23, about which levers 15 are rotatably mounted, with rollers 14 being rotatably fastened to the levers 15 by means of shoulder screws 20, ball bearings 21 and spacer sleeves 22 (FIG. 2). The rollers 14 are arranged so that each of them is associated with a ball 13 and touches the surface of the ball associated with them non-positively. The frictional connection is effected by spring force. For this purpose, torsion springs 17 are provided on the bolts 16, which are preloaded and held by spring clamping sleeves 18 and cylindrical pins 19.

Solange kein Falzbogen 1, von den Schrägwalzen 10, 11, 12 angetrieben, über den Fördertisch transportiert wird, liegen die Kugeln 13 auf der rotierenden Oberfläche der Schrägwalzen 11, 12 auf, wobei der Kraftschluß nicht nur durch das Eigengewicht der Kugeln, sondern auch durch die Federkraft der Torsionsfedern 17 bewirkt wird, die über die Hebel 15 die Laufrollen 14 auf die rotierende Oberfläche der Kugeln 13 drücken, wodurch die Laufrollen 14 ebenfalls in Rotation gehalten werden. Stößt nun ein über den Fördertisch transportierter Falzbogen 1 mit der Falzkante voraus gegen eine Kugel 13, so weicht diese Kugel (wie in Figur 1 ganz rechts dargestellt) nach oben aus, verliert dabei aber zu keinem Zeitpunkt den kraftschlüssigen Kontakt zur Oberfläche des transportierten Bogens 1 und zur Laufrolle 14, wodurch auch die Umfangsgeschwindigkeit der Kugel 13 sowie deren Drehrichtung unverändert bleiben. Nach dem Durchlaufen des Falzbogens 1 fällt die Kugel 13 wieder in ihre ursprüngliche Position unter der Einwirkung der Federkraft der Torsionsfeder 17 zurück, ohne daß der Kraftschluß unterbrochen würde. Die Anlaufkraftkomponente der einzelnen Falzbogen 1 in Richtung zum Richtlineal 7 hin bleibt somit konstant und wird durch das notwendige Ausweichen der Kugeln 13 nicht merklich beeinflußt. Auf diese Weise gelangen die Falzbogen 1 winkelgerecht in den Walzenspalt der Einlaufwalzen 5, 6 des nachfolgenden Falz- oder Druckwerks 4.As long as no folding sheet 1, driven by the diagonal rollers 10, 11, 12, is transported over the conveyor table, the balls 13 lie on the rotating surface of the diagonal rollers 11, 12, the frictional connection not only due to the weight of the balls, but also due to the spring force of the torsion springs 17 is effected, which press the rollers 14 via the levers 15 onto the rotating surface of the balls 13, whereby the rollers 14 are also kept in rotation. If a folded sheet 1 transported over the conveyor table strikes a ball 13 with the folded edge ahead, this ball (as shown on the far right in FIG. 1) dodges upwards, but at no time loses the non-positive connection Contact with the surface of the sheet 1 being transported and with the roller 14, as a result of which the peripheral speed of the ball 13 and its direction of rotation remain unchanged. After passing through the folding sheet 1, the ball 13 falls back into its original position under the action of the spring force of the torsion spring 17 without the non-positive connection being interrupted. The start-up force component of the individual folded sheets 1 in the direction of the guideline 7 thus remains constant and is not noticeably influenced by the necessary dodging of the balls 13. In this way, the folded sheets 1 reach the nip of the inlet rollers 5, 6 of the subsequent folding or printing unit 4 at an angle.

Bei einer anderen, in der Zeichnung nicht dargestellten Ausführungsform der Erfindung, können die Kugelleisten 8 mittig über Transportbändern angeordnet sein, die parallel zum Richtlineal 7 verlaufen, wobei die Förderebene nicht horizontal sein muß, sondern auch ansteigend sein kann oder wobei die Bogen über eine gekrümmte Fläche gefördert werden können und die Kugelleisten dann entsprechend gekrümmt sind.In another embodiment of the invention, not shown in the drawing, the ball strips 8 can be arranged centrally above conveyor belts which run parallel to the guide ruler 7, the conveying plane not having to be horizontal, but also being able to rise or the arch being curved Surface can be promoted and the ball bars are then curved accordingly.

Claims (5)

  1. A device for guiding sheets (1) of paper or other sheet material moved by drivable conveyor means (10,11,12) comprising an alignment edge (7) and a ball guide bar (8), the balls (13) of which are in positive drive with said conveyor means (10,11,12) and the sheets (1) moved thereabove characterized by providing spring-loaded rollers (14) as rotatable loading members on the side of the balls (13) facing away from the conveyor means (10,11,12) which are in positive contact with the surface of the balls (13) assigned to the rollers (14).
  2. A device according to claim 1 characterized by the rollers (14) being rotatably mounted on axles (20) oriented perpendicularly to the alignment edge (7) and to the direction which the sheets (1) are conveyed.
  3. A device according to claim 1 or 2 characterized by the rollers (14) being secured to a ledge (23) connected to the alignment edge (7) by means of levers (15) which are mounted free to swivel in a vertical plane.
  4. A device according to claim 3 characterized by the levers (15) being mounted free to swivel about pins (16) spring-loaded by torsion springs (17).
  5. Use of a device according to any of the claims 1 to 4 for guiding, aligning and holding down folded sheets (1) in folding or printing machines, conveyor tables and sheet feeders.
EP90104711A 1989-09-21 1990-03-13 Device for guiding moving sheets as well as their use Expired - Lifetime EP0418456B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3931522 1989-09-21
DE3931522A DE3931522A1 (en) 1989-09-21 1989-09-21 DEVICE FOR GUIDING MOVING BOWS AND THEIR USE

Publications (2)

Publication Number Publication Date
EP0418456A1 EP0418456A1 (en) 1991-03-27
EP0418456B1 true EP0418456B1 (en) 1993-12-22

Family

ID=6389888

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90104711A Expired - Lifetime EP0418456B1 (en) 1989-09-21 1990-03-13 Device for guiding moving sheets as well as their use

Country Status (5)

Country Link
EP (1) EP0418456B1 (en)
JP (1) JP2834300B2 (en)
DD (1) DD297620A5 (en)
DE (2) DE3931522A1 (en)
PT (1) PT95373B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4131314A1 (en) * 1991-09-20 1993-03-25 Meteor Siegen Apparat Schmeck FOLDING SYSTEM FOR BOW-SHAPED FOLDED GOODS
DE9304281U1 (en) * 1993-03-22 1993-05-13 Stahl Gmbh & Co Maschinenfabrik, 7140 Ludwigsburg, De
DE102005015095A1 (en) * 2005-04-01 2006-10-05 Heidelberger Druckmaschinen Ag Device for positioning a trailing edge of sheets
US7464931B2 (en) 2005-03-31 2008-12-16 Heidelberger Druckmaschinen Ag Apparatus for positioning a trailing edge of sheets
US8322713B2 (en) 2009-04-17 2012-12-04 Duplo Seiko Corporation Cross conveying device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61105343U (en) * 1984-12-14 1986-07-04
JPS61211249A (en) * 1985-03-13 1986-09-19 Yoshiyuki Kamata Sheet material conveyer
DE3525040C2 (en) * 1985-07-13 1994-05-11 Bell & Howell Co Device for redirecting the conveying direction of paper sheets

Also Published As

Publication number Publication date
DE59003955D1 (en) 1994-02-03
JP2834300B2 (en) 1998-12-09
DD297620A5 (en) 1992-01-16
PT95373A (en) 1992-06-30
PT95373B (en) 1998-06-30
EP0418456A1 (en) 1991-03-27
DE3931522A1 (en) 1991-04-04
JPH03138245A (en) 1991-06-12

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