EP0559846B2 - Device for turning a sheet with a simultaneous change in the direction of transport - Google Patents

Device for turning a sheet with a simultaneous change in the direction of transport Download PDF

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Publication number
EP0559846B2
EP0559846B2 EP92908174A EP92908174A EP0559846B2 EP 0559846 B2 EP0559846 B2 EP 0559846B2 EP 92908174 A EP92908174 A EP 92908174A EP 92908174 A EP92908174 A EP 92908174A EP 0559846 B2 EP0559846 B2 EP 0559846B2
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EP
European Patent Office
Prior art keywords
gap
sheet
input
output
guide plate
Prior art date
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Expired - Lifetime
Application number
EP92908174A
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German (de)
French (fr)
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EP0559846B1 (en
EP0559846A1 (en
Inventor
Johannes Jacobus Maria Kusters
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.)
Pitney Bowes Deutschland GmbH
Original Assignee
Bell and Howell GmbH
Bell and Howell Co
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Application filed by Bell and Howell GmbH, Bell and Howell Co filed Critical Bell and Howell GmbH
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Publication of EP0559846B1 publication Critical patent/EP0559846B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/02—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains
    • B65H5/021—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains by belts
    • B65H5/025—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains by belts between belts and rotary means, e.g. rollers, drums, cylinders or balls, forming a transport nip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H15/00—Overturning articles
    • B65H15/004—Overturning articles employing rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/26—Duplicate, alternate, selective, or coacting feeds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/34—Modifying, selecting, changing direction of displacement
    • B65H2301/342—Modifying, selecting, changing direction of displacement with change of plane of displacement
    • B65H2301/3423—Modifying, selecting, changing direction of displacement with change of plane of displacement by travelling an angled curved path section for overturning and changing feeding direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/445—Moving, forwarding, guiding material stream of articles separated from each other
    • B65H2301/4454—Merging two or more streams

Definitions

  • the invention relates to a device for turning a sheet while changing the conveying direction with the features of the preamble of Claim 1.
  • a device of this type is from the German Offenlegungsschrift 36 14 103 known. she contains an entrance slit, a diagonal one Bending gap and an exit gap, this Gap between a roller arrangement on the one hand and a conveyor belt arrangement are formed on the other hand, such that a formation of leaves in a positive direction partially clamped turned and discharged at an angle to the feed direction can be.
  • the object of the invention is to provide a device the features of the preamble of claim 1 so that at high speed achieved an increased level of operational reliability becomes.
  • a multiple juxtaposition of facilities of the type specified here not only makes it possible to turn a single sheet and dissipate with changed conveying direction, but a plurality lying side by side in one plane promoted sheets or form sections at the same time with the turning process and the change in the conveying direction to separate the individual sheets or form sections after this separation each separate sheet stacks or sets of forms assign.
  • the exit gap expediently contains in Direction of discharge moving sections of rotating Conveyor belts and on the other hand assigned to them Counter-rolling elements as output drive means, the rolling elements preferably from in cages of the guide plate held balls are formed.
  • the device 10 specified here for turning a sheet while changing the conveying direction a feed device 11 is connected upstream, in which a feed gap 12 between pairs of each other opposite guide rods 13 and 14 formed is.
  • the guide rods 13 can by transverse connecting rods 15 held together while the guide rods 14 in a corresponding manner across extending connecting rods 16 held together are.
  • the direction of the sheet to be processed is in the Feed gap 12 entered in the direction of arrow 17 and has the shape of, for example, by means of a Cutting device separated from a continuous form Leaf.
  • Upstream of the feed device 11 Institutions promote what needs to be managed Sheet into the entrance nip 12 until the front Sheet edge protrudes beyond the feed gap 12 and in an entry slot 18 of the device for turning and changing the conveying direction.
  • In the Entrance gap 18 extends over cutouts from guide walls 19 and 20 a drive roller assembly 21 and 22, which the front edge of the over the feed gap 12th fed sheet detected and further into the input gap 18 pulls in.
  • the vacuum holding device 23 is in the embodiment shown here through in vacuum holding openings of the guide rods 14 opening channels 25, a control valve 26 and one Vacuum source 27 realized.
  • the respective leaf position, in which the vacuum holding device 23 is switched on or is switched ineffective, can by means of a position indicator 28 in the form of a photocell and a control device 29 can be determined.
  • the baffles 19 and 20 converge in the Figure 2 evident way from the input side towards the entrance gap 18, with the upper guide wall 19 is attached to a swivel bracket 30, which around a pivot axis 31, which is supported in bearing blocks 32 is, can be swiveled up to the upper guide wall 19 together with the also on the swivel bracket 30 stored and held rollers 21 of the drive roller assembly from the lower baffle 20 and the lower Arrangement of drive rollers 22 stand out and the entrance gap 18 accessible. It is still here noted that the rollers 21 of the drive roller assembly are stored freely.
  • Upper guide wall 19 thus extends below 45 degrees oriented to the direction of conveyance of the drive roller arrangement diagonal recess in the lower guide wall 20, being the diagonal leading edge of the lower baffle 20 is completed by the deflecting body 35.
  • the lower guide wall 20 forms the upper end of a Baffle 36, the middle layer 37 for example consists of polytetrafluoroethylene and with cage recesses 38 is provided, in which rolling elements or Balls 39 are housed.
  • a moving disc which is dimensioned in such a way that it fits into something Profile of the exit gap 49 protrudes and therefore the removed leaf gives a slight transverse curvature, which improves the stability of the discharged sheet Way is increased.
  • the conveyor speed of the conveyor belts 42 and 43 in connection with the rolling elements 39 is preferred greater than the conveying speed of the Drive roller assembly 21, 22, with the result that that too handling sheet once its with reference to Figure 1 right corner between conveyor belt 2 and the rolling element or the ball 39A is now detected with increased speed from the input gap 18 in the output gap 49 is pulled and from the prevailing nestling on the inside of the deflection flange 34 for contact with the outer surface of the deflecting body 35 changes and precisely whose diagonal bend follows, such that due to the 45 degree orientation of the deflecting body 35 a conveying direction in the exit gap 49 90 degrees to the Sets the feed direction according to arrow 17, as indicated by arrow 51 in Figure 1.
  • the task can be accomplished with such a device solve several side by side on one level transported and separated from each other in the longitudinal direction Turning and singling leaves as well as in to discharge in a direction perpendicular to the feed direction, as shown schematically in Figure 3 and in perspective Representation is shown.
  • the sheets handled in this new direction of conveyance overlapping each other with reference to the representation of Figure 3 right sheet 52d then transported from the discharge direction to the top is, while the one drawn on the left in FIG Sheet 52a is removed at the bottom.
  • the isolation does not cause any difficulties afterwards.
  • Figure 3a schematically shows a device in supervision with two sections, Figure 3b one with three Sections and Figure 3c one with four sections adjacent units 10 of the in Figure 1 Art.
  • Figure 3d finally shows that feed devices 11 a chain from both sides juxtaposed units 10, each with alternating Orientation of the diagonal deflection gap 33 can supply.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Registering Or Overturning Sheets (AREA)

Abstract

Sheet or sets of sheets are turned very rapidly and reliably, especially after the cutting of endless stationery, conveyed further in a different transport direction and separated in that the leading edge of the sheet is taken to a diagonal bending slot via which a corner of a sheet first reaches an outlet slot in which the leading edge of the sheet is taken in a direction perpendicular to the feed direction in a plane lying parallel to the transport plane but at a certain distance therefrom.

Description

Die Erfindung betrifft eine Einrichtung zum Wenden eines Blattes unter gleichzeitiger Änderung der Förderrichtung mit den Merkmalen des Oberbegriffes von Patentanspruch 1. Eine Einrichtung dieser Art ist aus der deutschen Offenlegungsschrift 36 14 103 bekannt. Sie enthält einen Eingangsspalt, einen diagonal verlaufenden Biegespalt und einen Ausgangsspalt, wobei diese Spalte zwischen einer Rollenanordnung einerseits und einer Förderbandanordnung andererseits gebildet sind, derart, daß eine Formation von Blättern in einer Zwangsführung eingespannt schraubengangförmig teilweise gewendet und im Winkel zur Zuführrichtung abgeführt werden kann.The invention relates to a device for turning a sheet while changing the conveying direction with the features of the preamble of Claim 1. A device of this type is from the German Offenlegungsschrift 36 14 103 known. she contains an entrance slit, a diagonal one Bending gap and an exit gap, this Gap between a roller arrangement on the one hand and a conveyor belt arrangement are formed on the other hand, such that a formation of leaves in a positive direction partially clamped turned and discharged at an angle to the feed direction can be.

Bei der Handhabung und Bearbeitung von Blättern und Formularen, etwa in Postbearbeitungsmaschinen, ist eine hohe Arbeitsgeschwindigkeit erwünscht. Störungen, Papierstaus und dergleichen müssen vermieden werden, da sie einen Stillstand der gesamten Anlage auslösen und zur Zerstörung von Dokumenten führen können, was beispielsweise bei der Bearbeitung von Bankpost verhängnisvoll ist.When handling and editing sheets and forms, for example in mail processing machines, high working speed is desirable. Disorders, Paper jams and the like must be avoided as they shutdown the entire facility trigger and destroy documents can, for example, when editing Bank mail is fatal.

Aufgabe der Erfindung ist es, eine Einrichtung mit den Merkmalen des Oberbegriffes von Patentanspruch 1 so auszugestalten, daß bei hoher Arbeitsgeschwindigkeit ein erhöhtes Maß von Betriebszuverlässigkeit erzielt wird.The object of the invention is to provide a device the features of the preamble of claim 1 so that at high speed achieved an increased level of operational reliability becomes.

Diese Aufgabe wird durch die Merkmale des Patentanspruches 1 gelöst. Ein mehrfaches Nebeneinandersetzen von Einrichtungen der hier angegebenen Art ermöglicht es nicht nur, ein einzelnes Blatt zu wenden und mit geänderter Förderrichtung abzuführen, sondern eine Mehrzahl in einer Ebene nebeneinanderliegend angeförderter Blätter oder Formularabschnitte gleichzeitig mit dem Wendevorgang und der Änderung der Förderrichtung zu vereinzelnen, um die einzelnen Blätter oder Formularabschnitte nach dieser Vereinzelung jeweils gesonderten Blattstapeln oder Formularblattsätzen zuzuordnen.This object is achieved by the features of the claim 1 solved. A multiple juxtaposition of facilities of the type specified here not only makes it possible to turn a single sheet and dissipate with changed conveying direction, but a plurality lying side by side in one plane promoted sheets or form sections at the same time with the turning process and the change in the conveying direction to separate the individual sheets or form sections after this separation each separate sheet stacks or sets of forms assign.

Zweckmäßig enthält der Ausgangsspalt einerseits in Abförderrichtung bewegte Abschnitte von umlaufenden Förderbändern und andererseits diesen zugeordnete Gegenhalte-Wälzkörper als Ausgangs-Antriebsmittel, wobei die Wälzkörper bevorzugt von in Käfigen der Leitplatte gehaltenen Kugeln gebildet sind.On the one hand, the exit gap expediently contains in Direction of discharge moving sections of rotating Conveyor belts and on the other hand assigned to them Counter-rolling elements as output drive means, the rolling elements preferably from in cages of the guide plate held balls are formed.

Es hat sich als zweckmäßig erwiesen, das zu handhabende Blatt oder die zu handhabenden Blätter zunächst in den Bereich der Treibrollenanordnung im Eingangsspalt zu fördern und vor einer Weitergabe des Blattes oder der Blätter dieses bzw. diese etwa mittels einer Vakuum-Haltevorrichtung gegen die Antriebswirkung der Treibrollenanordnung festzuhalten und dann erst gesteuert freizugeben, wodurch eine präzise Anfangsstellung des jeweiligen Blattes oder der jeweiligen Blätter bei der Einförderung in den Umlenkspalt erreicht wird. Nachfolgend werden Ausführungsbeispiele unter Bezugnahme auf die Zeichnung im einzelnen beschrieben. Es stellen dar:

Fig. 1
eine schematische perspektivische Ansicht einer Einrichtung zum Wenden eines Blattes unter gleichzeitiger Änderung der Förderrichtung, wobei bestimmte tragende Gestellsteile zur Vereinfachung der Darstellung und zur Verbesserung der Übersichtlichkeit weggelassen sind,
Fig. 2
eine Schnittansicht der Einrichtung nach Figur 1 entsprechend der in Figur 1 angedeuteten Schnittebene II-II.
Fig. 3
eine perspektivische schematische Darstellung des Weges mehrerer zur vereinzelnender Blätter in Einrichtungen der hier angegebenen Art und
Fig. 3a bis 3d
schematische Aufsichtszeichnungen von Handhabungswegen der in Einrichtungen der vorliegend angegebenen Art geförderten und gewendeten Blätter oder Formulare, die beispielsweise in einer Postbearbeitungsmaschine auf eine Förderkette aufgegeben werden.
It has proven to be expedient to first convey the sheet or sheets to be handled into the area of the drive roller arrangement in the entry nip and, before the sheet or sheets are passed on, for example by means of a vacuum holding device against the driving action of the drive roller arrangement to hold and only then release it in a controlled manner, whereby a precise starting position of the respective sheet or sheets is achieved when feeding into the deflection gap. Exemplary embodiments are described in detail below with reference to the drawing. They represent:
Fig. 1
2 shows a schematic perspective view of a device for turning a sheet while changing the conveying direction, certain supporting frame parts being omitted to simplify the illustration and to improve clarity,
Fig. 2
2 shows a sectional view of the device according to FIG. 1 corresponding to the sectional plane II-II indicated in FIG. 1.
Fig. 3
a perspective schematic representation of the path of several sheets to be separated in devices of the type specified here and
3a to 3d
schematic supervision drawings of handling routes of the sheets or forms conveyed and turned in devices of the type specified here, which are placed on a conveyor chain, for example in a mail processing machine.

Zunächst seien die Figuren 1 und 2 im einzelnen betrachtet.First, Figures 1 and 2 are in detail considered.

Der hier angegebenen Einrichtung 10 zum Wenden eines Blattes unter gleichzeitiger Änderung der Förderrichtung ist eine Zufördervorrichtung 11 vorgeschaltet, in welcher ein Zuförderspalt 12 zwischen Paaren einander gegenüberstehender Leitstäbe 13 und 14 gebildet ist. Die Leitstäbe 13 können durch quer verlaufende Verbindungsstäbe 15 zusammengehalten sein, während die Leitstäbe 14 in entsprechender Weise durch quer verlaufende Verbindungsstäbe 16 zusammengehalten sind.The device 10 specified here for turning a sheet while changing the conveying direction a feed device 11 is connected upstream, in which a feed gap 12 between pairs of each other opposite guide rods 13 and 14 formed is. The guide rods 13 can by transverse connecting rods 15 held together while the guide rods 14 in a corresponding manner across extending connecting rods 16 held together are.

Ein von der Einrichtung zum Wenden und Ändern der Förderrichtung zu bearbeitendes Blatt wird in den Zuförderspalt 12 in Richtung des Pfeiles 17 eingegeben und hat die Form eines beispielsweise mittels einer Schneidvorrichtung von einem Endlosformular abgetrennten Blattes. Der Zufördervorrichtung 11 vorgeschaltete Einrichtungen fördern ein zu handhabendes Blatt in den Eingangsspalt 12 hinein, bis die vordere Blattkante über den Zuförderspalt 12 hinausragt und in einen Eingangsspalt 18 der Einrichtung zum Wenden und Ändern der Förderrichtung hinein gelangt. In den Eingangsspalt 18 reicht über Ausschnitte von Leitwänden 19 und 20 eine Treibrollenanordnung 21 und 22, welche die Vorderkante des über den Zuförderspalt 12 zugeführten Blattes erfaßt und weiter in den Eingangsspalt 18 hineinzieht.One from the device for turning and changing The direction of the sheet to be processed is in the Feed gap 12 entered in the direction of arrow 17 and has the shape of, for example, by means of a Cutting device separated from a continuous form Leaf. Upstream of the feed device 11 Institutions promote what needs to be managed Sheet into the entrance nip 12 until the front Sheet edge protrudes beyond the feed gap 12 and in an entry slot 18 of the device for turning and changing the conveying direction. In the Entrance gap 18 extends over cutouts from guide walls 19 and 20 a drive roller assembly 21 and 22, which the front edge of the over the feed gap 12th fed sheet detected and further into the input gap 18 pulls in.

Bevor jedoch das zu handhabende Blatt von der Treibrollenanordnung 21 und 22 vollständig in den Eingangsspalt 18 hineingezogen wird, blockiert eine Vakuum-Haltevorrichtung 23 die weitere Blattbewegung, wobei die unteren, nicht mit einem Reibbelag versehenen, mittels eines Motors 24 angetriebenen Treibrollen 22 der Treibrollenanordnung unter dem zu fördernden Blatt durchlaufen, ohne daß die Haltekraft der Vakuum-Haltevorrichtung 23 überwunden wird. Die Vakuum-Haltevorrichtung 23 ist bei dem hier gezeigten Ausführungsbeispiel durch in Vakuum-Halteöffnungen der Leitstäbe 14 mündende Kanäle 25, ein Steuerventil 26 und eine Vakuumquelle 27 verwirklicht. Die jeweilige Blattstellung, in welcher die Vakuum-Haltevorrichtung 23 eingeschaltet oder wirkungslos geschaltet wird, kann mittels eines Stellungsmelders 28 in Gestalt einer Fotozelle und einer Steuereinrichtung 29 bestimmt werden.However, before the sheet to be handled by the Drive roller assemblies 21 and 22 fully into the entrance nip 18 is pulled in, blocks one Vacuum holding device 23 the further sheet movement, the lower ones, not provided with a friction lining, driven rollers by means of a motor 24 22 of the drive roller assembly under the to be promoted Pass through the sheet without losing the holding force of the vacuum holding device 23 is overcome. The vacuum holding device 23 is in the embodiment shown here through in vacuum holding openings of the guide rods 14 opening channels 25, a control valve 26 and one Vacuum source 27 realized. The respective leaf position, in which the vacuum holding device 23 is switched on or is switched ineffective, can by means of a position indicator 28 in the form of a photocell and a control device 29 can be determined.

Die Leitwände 19 und 20 konvergieren in der aus Figur 2 ersichtlichen Weise von der Eingangsseite aus zu dem Eingangsspalt 18 hin, wobei die obere Leitwand 19 an einem Schwenkbügel 30 befestigt ist, welcher um eine Schwenkachse 31, die in Lagerböcken 32 gelagert ist, hochgeschwenkt werden kann, um die obere Leitwand 19 zusammen mit den ebenfalls am Schwenkbügel 30 gelagerten und gehalterten Rollen 21 der Treibrollenanordnung von der unteren Leitwand 20 und der unteren Anordnung von Treibrollen 22 abzuheben und den Eingangsspalt 18 zugänglich zu machen. Es sei hier noch angemerkt, daß die Rollen 21 der Treibrollenanordnung freilaufend gelagert sind.The baffles 19 and 20 converge in the Figure 2 evident way from the input side towards the entrance gap 18, with the upper guide wall 19 is attached to a swivel bracket 30, which around a pivot axis 31, which is supported in bearing blocks 32 is, can be swiveled up to the upper guide wall 19 together with the also on the swivel bracket 30 stored and held rollers 21 of the drive roller assembly from the lower baffle 20 and the lower Arrangement of drive rollers 22 stand out and the entrance gap 18 accessible. It is still here noted that the rollers 21 of the drive roller assembly are stored freely.

Aus den Figuren 1 und 2 ist erkennbar, daß die obere Leitwand 19 und die untere Leitwand 20 in Förderrichtung der Treibrollenanordnung bis zu einem diagonal verlaufenden Biegespalt 33 reichen, dessen Krümmungsachse im wesentlichen parallel zur Ebene des Eingangsspaltes und damit zur Blattebene des zu handhabenden Blattes und im Winkel von 45 Grad zur führenden Blattkante orientiert ist, wobei der Biegespalt 33 einerseits von einem diagonalen, gekrümmten Umlenkflansch 34 der oberen Leitwand und andererseits von einem diesem Umlenkflansch gegenüberstehenden, diagonalen, im wesentlichen zylindrischen Umlenkkörper begrenzt ist.From Figures 1 and 2 it can be seen that the upper guide wall 19 and the lower guide wall 20 in the conveying direction the drive roller assembly up to one diagonally extending bending gap 33 range, its Axis of curvature essentially parallel to the plane of the entrance slit and thus to the sheet level of the handling sheet and at an angle of 45 degrees to the leading sheet edge is oriented, with the bending gap 33 on the one hand from a diagonal, curved Deflection flange 34 of the upper guide wall and on the other hand from a confronting this deflection flange, diagonal, essentially cylindrical deflecting body is limited.

Die als vergleichsweise starre Deckplatte ausgebildete obere Leitwand 19 reicht somit in eine unter 45 Grad zur Förderrichtung der Treibrollenanordnung orientierte diagonale Ausnehmung der unteren Leitwand 20 hinein, wobei die diagonale vordere Kante der unteren Leitwand 20 von dem Umlenkkörper 35 abgeschlossen ist. Die untere Leitwand 20 bildet den oberen Abschluß einer Leitplatte 36, deren mittlere Schicht 37 beispielsweise aus Polytetrafluoräthylen besteht und mit Käfigausnehmungen 38 versehen ist, in denen Wälzkörper oder Kugeln 39 untergebracht sind. Diese Kugeln sind in den Käfigausnehmungen 38 durch eine untere Abschlußwand 40 der Leitplatte 36 gehalten, wobei die untere Abschlußwand 40 mit Ausnehmungen ausreichenden Durchmessers versehen ist, die auf die Käfigausnehmungen 38 ausgerichtet sind, derart, daß die Wälzkörper 39 durch die Ausnehmungen der unteren Abschlußwand nach unten vorstehen. Aus Figur 2 ist auch zu erkennen, daß die mittlere Schicht 37 der Leitplatte 36 mit Ausnehmungen derart versehen ist, daß darin die Treibrollen 22 der Treibrollenanordnung Aufnahme finden können, welche durch die Ausschnitte der unteren Leitwand 20 nach oben in den Eingangsspalt 18 reichen.The designed as a comparatively rigid cover plate Upper guide wall 19 thus extends below 45 degrees oriented to the direction of conveyance of the drive roller arrangement diagonal recess in the lower guide wall 20, being the diagonal leading edge of the lower baffle 20 is completed by the deflecting body 35. The lower guide wall 20 forms the upper end of a Baffle 36, the middle layer 37 for example consists of polytetrafluoroethylene and with cage recesses 38 is provided, in which rolling elements or Balls 39 are housed. These balls are in the Cage recesses 38 through a lower end wall 40 of the guide plate 36 held, the lower End wall 40 sufficient with recesses Diameter is provided on the cage recesses 38 are aligned such that the rolling elements 39 through the recesses of the lower Protruding the end wall downwards. From Figure 2 is can also be seen that the middle layer 37 of the guide plate 36 is provided with recesses such that therein the drive rollers 22 of the drive roller assembly can find which by the cutouts of the lower guide wall 20 upwards into the input gap 18th pass.

Unterhalb der Leitplatte 36 befindet sich ein Tisch 41, über welchen jeweils das Obertrum von Förderbändern 42 und 43 geführt ist. Diese Förderbänder sind über am Anfang und am Ende des Tisches 41 angeordnete und gelagerte Rollenpaare 44 und 45 bzw. 46 und 47 gelegt, wobei die Rollen 44 und 46 von einem Antriebsmotor 48 in Umdrehung versetzt werden.There is a table below the guide plate 36 41, over which the upper run of conveyor belts 42 and 43 is performed. These conveyor belts are over arranged at the beginning and end of the table 41 and bearing pairs of rollers 44 and 45 or 46 and 47 placed, the rollers 44 and 46 by a drive motor 48 can be rotated.

Die untere Abschlußwand der Leitplatte 36 einerseits und der Tisch 41 andererseits begrenzen einen Ausgangsspalt 49, der in einer Ebene liegt, die parallel zur Ebene des Eingangsspaltes 18 ausgerichtet ist und von dieser Ebene einen Abstand im wesentlichen entsprechend der Dicke der Leitplatte 36 hat. In dem Ausgangsspalt 49 sind als Fördereinrichtungen einerseits jeweils die oberen Abschnitte oder die oberen Trümmer der Förderbänder 42 und 43 und andererseits jeweils auf die Förderbänder ausgerichtete Reihen von Wälzkörpern 39 wirksam. Diese Zuordnung ist aus den Figuren 1 und 2 für den Fachmann ohne weiteres zu erkennen. Auf der Ausgangsseite der Förderbänder 42 und 43 befindet sich noch ein den Rollen 45 und 47 gegenüberstehendes, in Figur 1 strichpunktiert angedeutetes Laufrollenpaar 50. Zwischen den Laufrollen des Laufrollenpaares 50 kann, was in Figur 1 nicht dargestellt ist, eine mitlaufende Scheibe angeordnet sein, die im Durchmesser so bemessen ist, daß sie etwas in das Profil des Ausgangsspaltes 49 hineinragt und daher dem abgeförderten Blatt eine leichte Querwölbung vermittelt, wodurch die Stabilität des abgeförderten Blattes in wünschenswerter Weise erhöht wird.The lower end wall of the guide plate 36 on the one hand and the table 41, on the other hand, limit one Output gap 49, which lies in a plane that is parallel is aligned with the level of the input gap 18 and a distance corresponding to this plane essentially the thickness of the guide plate 36. In the exit slit 49 are on the one hand as funding institutions the top sections or the top debris, respectively of the conveyor belts 42 and 43 and on the other hand each the conveyor belts aligned rows of rolling elements 39 effective. This assignment is from the figures 1 and 2 for the person skilled in the art. On the exit side of the conveyor belts 42 and 43 there is still a roller 45 and 47 opposite, In Figure 1 dash-dotted roller pair 50. Between the rollers of the Pair of rollers 50 can, which is not shown in Figure 1 is arranged, a moving disc, which is dimensioned in such a way that it fits into something Profile of the exit gap 49 protrudes and therefore the removed leaf gives a slight transverse curvature, which improves the stability of the discharged sheet Way is increased.

Im Betrieb wird ein etwa von einem Endlosformular abgetrenntes Blatt aus der Trennvorrichtung in Richtung des Pfeiles 17 in die Zufördervorrichtung 11 eingegeben und so weit vorgeschoben, daß die Vorderkante des Blattes schließlich von der Treibrollenanordnung im Eingangsspalt 18 erfaßt wird und in dem Eingangsspalt 18 weiter vorgeschoben wird. Dabei überläuft schließlich die hintere Blattkante den Fühler 28, welcher ein Signal erzeugt und die Steuereinrichtung 29 dazu veranlaßt, die Vakuum-Halteeinrichtung 23 durch Öffnen des Ventiles 26 in Betrieb zu setzen, so daß nunmehr das Blatt durch die Vakuum-Saugöffnungen am Außenende der Kanäle 25 festgehalten wird und die Treibrollen 22 zunächst leer unter dem im Eingangsspalt 18 befindlichen Teil des zu handhabenden Blattes durchlaufen.In operation, for example, is from an endless form severed sheet from the separator in the direction the arrow 17 entered into the feed device 11 and advanced so far that the front edge of the Finally, sheet from the drive roller assembly in the entrance nip 18 is detected and in the input gap 18th is pushed forward. It eventually overflows the rear edge of the sheet the sensor 28, which is a signal generated and the control device 29 causes the Vacuum holding device 23 by opening the valve 26 to put into operation, so that now the sheet through the vacuum suction openings at the outer end of the channels 25 is held and the drive rollers 22 initially empty under the part of the in the input gap 18 to through the handling sheet.

Wird dann das Blatt durch Schließen des Ventiles 26 und Abschaltung der Vakuum-Haltevorrichtung 23 wieder freigegeben, so schiebt die Treibrollenanordnung 21, 22 das zu handhabende Blatt weiter in dem Eingangsspalt vorwärts, so daβ zunächst die in Figur 1 links liegende Blattecke den Biegespalt 33 erreicht und unter 45 Grad nach unten gekrümmt wird, bis diese Blattecke den Ausgangsspalt 49 erreicht hat und von der in Figur 1 mit 39A bezeichneten Kugel einerseits und dem Förderband 42 andererseits erfaßt wird.Then the leaf is closed by closing the valve 26 and switching off the vacuum holding device 23 released again, so the drive roller assembly pushes 21, 22 the sheet to be handled further in the input gap forward, so that first the left in Figure 1 lying sheet corner reached the bending gap 33 and below 45 degrees down until this sheet corner has reached the exit gap 49 and of that in FIG 1 ball designated 39A on the one hand and the conveyor belt 42 on the other hand is detected.

Die Fördergeschwindigkeit der Förderbänder 42 und 43 in Verbindung mit den Wälzkörpern 39 ist vorzugsweise größer als die Fördergeschwindigkeit der Treibrollenanordnung 21, 22, mit der Folge, daß das zu handhabende Blatt, sobald seine mit Bezug auf Figur 1 rechtsliegende Ecke zwischen dem Förderband 2 und dem Wälzkörper oder der Kugel 39A erfaßt wird, nun mit erhöhter Geschwindigkeit aus dem Eingangsspalt 18 in den Ausgangsspalt 49 gezogen wird und von der zunächst vorherrschenden Anschmiegung an die Innenseite des Umlenkflansches 34 zur Anlage an die Außenfläche des Umlenkkörpers 35 wechselt und präzise dessen diagonaler Biegung folgt, derart, daß sich aufgrund der 45 Grad-Orientierung des Umlenkkörpers 35 eine Förderrichtung im Ausgangsspalt 49 90 Grad zu der Zuförderrichtung entsprechend des Pfeiles 17 einstellt, wie durch den Pfeil 51 in Figur 1 angedeutet ist.The conveyor speed of the conveyor belts 42 and 43 in connection with the rolling elements 39 is preferred greater than the conveying speed of the Drive roller assembly 21, 22, with the result that that too handling sheet once its with reference to Figure 1 right corner between conveyor belt 2 and the rolling element or the ball 39A is now detected with increased speed from the input gap 18 in the output gap 49 is pulled and from the prevailing nestling on the inside of the deflection flange 34 for contact with the outer surface of the deflecting body 35 changes and precisely whose diagonal bend follows, such that due to the 45 degree orientation of the deflecting body 35 a conveying direction in the exit gap 49 90 degrees to the Sets the feed direction according to arrow 17, as indicated by arrow 51 in Figure 1.

Bei praktischen Ausführungsformen der hier angegebenen Einrichtung besitzt sowohl die Zutördervorrichtung 11 als auch die Einrichtung 10 mehrere nebeneinanderliegende Abschnitte, wobei der Schwenkbügel 30 und die Schwenkachse sich über diese mehreren Abschnitte hinweg einstückig erstreckt und jeweils mit Sätzen von Treibrollen 21 entsprechend der in Figur 1 gezeigten Anordnung versehen ist. An dem sich über mehrere Abschnitte erstreckenden Schwenkbügel 30 sind den Abschnitten jeweils zugeordnete Deckplattenabschnitte 19 mit Umlenkflanschen 34 befestigt, wobei die Umlenkflanschen 34 jeweils in mit Umlenkkörpern 35 versehene diagonale Ausnehmungen einer sich über sämtliche Abschnitte quer erstrekkenden Leitplatte 36 größerer Länge hineinreichen. Auf der Unterseite dieser Leitplatte befindet sich ein entsprechend sich über sämtliche Abschnitte der Einrichtung erstreckender Tisch 41, über dessen Oberseite wiederum entsprechend verlängerte Förderbänder 42 und 43 geführt sind.In practical embodiments of those specified here Facility has both the conveyor 11 and the device 10 several adjacent sections, the Swivel bracket 30 and the swivel axis over extends these several sections in one piece and each with sets of drive rollers 21 accordingly the arrangement shown in Figure 1 is provided. To the swivel bracket extending over several sections 30 are each assigned to the sections Cover plate sections 19 fastened with deflection flanges 34, the deflection flanges 34 in each with Deflection bodies 35 provided diagonal recesses one extending across all sections Reach guide plate 36 of greater length. On there is a corresponding underside of this guide plate across all sections of the facility extending table 41, in turn over the top accordingly extended conveyor belts 42 and 43 are performed.

Mit einer derartigen Einrichtung läßt sich die Aufgabe lösen, mehrere nebeneinander in einer Ebene angeförderte und in Längsrichtung voneinander abgetrennte Blätter zu wenden und zu vereinzelnen sowie in einer zur Zuförderrichtung senkrechten Richtung abzufördern, wie dies in Figur 3 schematisch und in perspektivischer Darstellung gezeigt ist. Nach dem Zufördern und Wenden sowie dem Wechsel der Förderrichtung folgen die gehandhabten Blätter in dieser neuen Förderrichtung einander überlappend, wobei das mit Bezug auf die Darstellung von Figur 3 rechtsliegende Blatt 52d dann von der Abförderrichtung zuoberst transportiert wird, während das in Figur 3 linksliegend gezeichnete Blatt 52a zuunterst abgefördert wird. Die Vereinzelnung bereitet danach keine Schwierigkeiten.The task can be accomplished with such a device solve several side by side on one level transported and separated from each other in the longitudinal direction Turning and singling leaves as well as in to discharge in a direction perpendicular to the feed direction, as shown schematically in Figure 3 and in perspective Representation is shown. After feeding and turning as well as changing the conveying direction the sheets handled in this new direction of conveyance overlapping each other, with reference to the representation of Figure 3 right sheet 52d then transported from the discharge direction to the top is, while the one drawn on the left in FIG Sheet 52a is removed at the bottom. The isolation does not cause any difficulties afterwards.

Figur 3a zeigt schematisch in Aufsicht eine Einrichtung mit zwei Abschnitten, Figur 3b eine solche mit drei Abschnitten und Figur 3c eine solche mit vier Abschnitten nebeneinanderliegender Einheiten 10 der in Figur 1 gezeigten Art. Figur 3d schließlich zeigt, daß Zufördervorrichtungen 11 von beiden Seiten her eine Kette nebeneinanderliegender Einheiten 10 mit jeweils wechselnder Orientierung des diagonalen Umlenkspaltes 33 versorgen können.Figure 3a schematically shows a device in supervision with two sections, Figure 3b one with three Sections and Figure 3c one with four sections adjacent units 10 of the in Figure 1 Art. Figure 3d finally shows that feed devices 11 a chain from both sides juxtaposed units 10, each with alternating Orientation of the diagonal deflection gap 33 can supply.

Schließlich sei noch angemerkt, daß zur sicheren Führung und Umlenkung des zu handhabenden Blattes oder der zu handhabenden Blätter im Umlenkspalt 33 und im Ausgangsspalt 49 auch mehr als zwei Förderbänder nach der Art der Förderbänder 42 und 43 mit zugeordneten Reihen von Wälzkörpern 39 vorgesehen werden können.Finally, it should be noted that for safe Guiding and redirecting the sheet to be handled or the sheets to be handled in the deflection gap 33 and in the exit gap 49 also more than two conveyor belts according to the type of conveyor belts 42 and 43 with assigned rows of rolling elements 39 are provided can be.

Claims (6)

  1. A device for turning a sheet over, with simultaneous change in the direction of transport, wherein the sheet is fed by input drive means (21, 22) in an input gap (18), which turns into a diagonally extending bending gap (33), whose axis of curvature is orientated substantially parallel to the plane of the sheet and at an angle of preferably 45° to the travelling edge of the sheet and which opens into an output gap (49), in which output drive means (42, 43, 39) are provided at least to engage the sheet comer first appearing in the output gap (49) as the sheet is fed through the input gap (18), wherein the output gap has a plane which is substantially parallel to that of the input gap (18) but spaced therefrom, with the input gap (18) in which the sheet is fed by means of a drive roller arrangement (21, 22) forming input drive means being formed between a cover plate (19) and a guide plate (36), characterized in that the cover plate (19) comprises a diagonal, curved deflecting flange (34) reaching into a diagonal opening in the guide plate (36) to form the bending gap (33), and that the guide plate (36) comprises a substantially cylindrical diagonal deflecting body (35) opposite the deflecting flange, and wherein further the output gap (49) and the output drive means (42, 43,39) are provided on the side of the guide plate (36) facing away from the cover plate (19) and that the output gap (49) comprises sections of conveyor belts (42, 43) on one side, moved in the outfeed direction, and counter rolling bodies (39) associated therewith on the other side, as the output drive means.
  2. A device according to claim 1, characterized in that both the cover plate (19) and the guide plate (36) have cut-outs at the beginning of the input gap (18), through which opposed feed rollers of the drive roller arrangement (21, 22) extend into the input gap (18).
  3. A device according to any of claims 1 to 2, characterized in that an in-feed device (11) precedes the input gap (18) and has a retaining device (23) which, with the drive roller arrangement (21, 22) in operation, controllably (29) arrests the sheet to be transported or releases the same.
  4. A device according to any of claims 1 to 3, characterized in that the cover plate (19) together with a part of the drive roller arrangement (21, 22) containing idle rollers is pivotally mounted (31,32) relative to the guide plate (36).
  5. A device according to any of claims 1 to 4, characterized in that cage openings (38) are provided in the guide plate (36) and balls are fitted therein in rows as counter rolling bodies (39), which are opposed to conveyor belts (42,43) across the output gap (49)
  6. A device according to any of claims 1 to 5, characterized in that the transport speed in the output gap (49) is set higher than in the input gap (18).
EP92908174A 1991-07-04 1992-04-13 Device for turning a sheet with a simultaneous change in the direction of transport Expired - Lifetime EP0559846B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4122214A DE4122214A1 (en) 1991-07-04 1991-07-04 DEVICE FOR TURNING A SHEET UNDER SIMULTANEOUSLY CHANGING THE CONVEYOR
DE4122214 1991-07-04
PCT/EP1992/000829 WO1993001115A1 (en) 1991-07-04 1992-04-13 Device for turning a sheet with a simultaneous change in the direction of transport

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EP0559846A1 EP0559846A1 (en) 1993-09-15
EP0559846B1 EP0559846B1 (en) 1996-07-17
EP0559846B2 true EP0559846B2 (en) 2001-03-21

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EP (1) EP0559846B2 (en)
DE (2) DE4122214A1 (en)
WO (1) WO1993001115A1 (en)

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Also Published As

Publication number Publication date
EP0559846B1 (en) 1996-07-17
US5362039A (en) 1994-11-08
EP0559846A1 (en) 1993-09-15
USRE38867E1 (en) 2005-11-08
DE4122214A1 (en) 1993-01-14
DE59206783D1 (en) 1996-08-22
WO1993001115A1 (en) 1993-01-21

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