EP0896938B1 - Feeding device for a stack of sheets along a curved path - Google Patents

Feeding device for a stack of sheets along a curved path Download PDF

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Publication number
EP0896938B1
EP0896938B1 EP19980112505 EP98112505A EP0896938B1 EP 0896938 B1 EP0896938 B1 EP 0896938B1 EP 19980112505 EP19980112505 EP 19980112505 EP 98112505 A EP98112505 A EP 98112505A EP 0896938 B1 EP0896938 B1 EP 0896938B1
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EP
European Patent Office
Prior art keywords
roller
stack
deflecting
conveyor belt
feeding device
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.)
Expired - Lifetime
Application number
EP19980112505
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German (de)
French (fr)
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EP0896938A3 (en
EP0896938A2 (en
Inventor
Hans Weller
Karl-Fritz Heina
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.)
MBO Postpress Solutions GmbH
Original Assignee
Maschinenbau Oppenweiler Binder GmbH and Co KG
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Publication date
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Publication of EP0896938A2 publication Critical patent/EP0896938A2/en
Publication of EP0896938A3 publication Critical patent/EP0896938A3/en
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Publication of EP0896938B1 publication Critical patent/EP0896938B1/en
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    • 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
    • B65H5/24—Feeding articles in overlapping streams, i.e. by separation of articles from a pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H1/00—Supports or magazines for piles from which articles are to be separated
    • B65H1/08—Supports or magazines for piles from which articles are to be separated with means for advancing the articles to present the articles to the separating device
    • B65H1/22—Supports or magazines for piles from which articles are to be separated with means for advancing the articles to present the articles to the separating device moving in direction of plane of articles, e.g. for bodily advancement of fanned-out piles
    • B65H1/225—Round stack feeders
    • 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
    • B65H2301/33—Modifying, selecting, changing orientation

Definitions

  • the invention relates to a circular stack feeder with a Feeder frame, with an upper table held on the feeder frame, with one assigned to the upper table, at least a roller and a deflection drum guided upper table conveyor belt, the roller or the deflection drum being driven in rotation is, with a lower table, with one assigned to the lower table, a roll on the stack receiving side and a stack discharge side rotary driven roller led under table conveyor, the under table around its stack delivery side Roll pivotally held on the feeder frame and against the Deflection drum is spring-biased, and with flexible guide bands, the one ends above the upper table are attached to a peripheral portion of the Extend the deflection drum between the stack receiving side Roll of the table and a deflecting element passed and underneath the under table via elastically stretchable elements are set.
  • DE 25 05 164 B1 is also a circular stack feeder known, the one feeder frame, one on the feeder frame held upper table and the upper table assigned to at least one roller and a deflection drum at a distance from each other and upper table conveyor belts running parallel to each other has, wherein the roller or the deflection drum is driven in rotation and the upper table conveyor belts are a tensioning device assigned.
  • the circular stack feeder also has a lower table and the lower table assigned at a distance arranged and running parallel to each other Under-table conveyor belts around a stack delivery roll and around a deflecting roller arrangement exciting the under-table conveyor belts to an outer and an inner deflection roller above the upper table and around the pulley outside the upper table conveyor belts back to the stack delivery side Role.
  • the object underlying the invention is the circular pile sheet feeder of the generic types mentioned at the beginning Kind in such a way that the leadership of the scaled Sheet layer around the pulley from the upper table to the lower table is improved.
  • This task is started from the circular stack feeder type mentioned solved in that the under-table conveyor from at least two separated by a space parallel running external conveyor belts there is that in alignment with the outer conveyor belts separate central conveyor belt in the same direction as that outer conveyor belts is continuously provided that the middle Conveyor belt around the roll of the under table on the stack delivery side and around a pulley arrangement to an inner pulley above the upper table and around the pulley outside the upper table conveyor belt back to the stack delivery side Role of the table is guided, and that the flexible Guide belts on each side of the middle conveyor belt are arranged, the deflecting roller arrangement on the boom frame articulated lever is assigned, at least carries a main pulley and its pivoting on Counteracts fixed elastic stretchable element counteracts.
  • the circular stack feeder designed in this way has the advantage that a secure guidance of the layer of stacked scales Arch from the upper table to the lower table is guaranteed because the layer of sheets from the sheet transfer from the top table to the pulley up to the delivery of sheets from the under table through the Pickup held by the conveyor belts by a suction wheel and transported at a constant speed.
  • the preload of the lower table against the deflection drum is achieved in that the middle conveyor belt in contact with the stack receiving role of the under table on your guided by the peripheral portion facing away from the deflection drum is. If the layer of scaly arches the outer Push the middle conveyor belt away from the deflection drum elastic stretchable element that is on the lever of the pulley assembly attacks, stretches, i.e. with the help of the lever the middle conveyor belt against the stack receiving roll of the lower table below the pulley.
  • the deflection roller arrangement expediently has a lever-side arrangement Inlet deflection roller for a deflection of the middle one Conveyor belt to the lever and the inlet side of the main pulley and one above the upper table on the feeder frame stored outer upper pulley.
  • This arrangement ensures a large outer wrap angle around the Deflection roller guided scaled sheet stack without Deflection system creates great friction.
  • the elastically stretchable element is advantageously on the lever opposite the lever-side inlet guide roller.
  • the circular stack feeder shown in FIGS. 1 and 2 has one Boom frame 1, which has two side parts and cross parts.
  • the feeder frame 1 carries an upper table 2 on the sheet receiving side has a driven roller 3 to at least an endless upper table conveyor belt 6 rotates on the driven roller 3 opposite side around a deflection drum 5 guided with a correspondingly large diameter and after a loop of about two thirds of the deflection drum 5 via a further deflection roller 4 as the lower run to the driven one Roll 3 is returned.
  • an intermediate space 18 Between the outer conveyor belts 14 and 14 'of Underneath table 11, as can be seen from FIG. 2, is an intermediate space 18, in which a middle conveyor belt 19th aligned with the outer conveyor belts 14 and 14 'in the in the same orbital direction as this.
  • the middle conveyor belt 19 is also from the stack delivery side Roller 13 as the conveyor belts 14 and 14 'driven and runs with his lower run in contact with that of the deflection drum 5 facing away from the peripheral side of the stack receiving side Roller 12 of the lower table 11, to a deflection roller arrangement 20, the middle conveyor belt 19 above the Upper table 2 leads to an upper inner deflection roller 27, the middle conveyor belt 19 in the direction of the deflection drum 5 deflects the shingled sheet stack 7 against the deflection drum 5 presses and the scaled sheet stack 7 around the guide drum 5 around the under table 1 in the area of the stack receiving side Roll 12 leads, so that continuous guidance of the scaled sheet stack 7 around the deflection drum 5 around to the under table 11 is guaranteed.
  • the deflection roller arrangement 20 consists of a lever 21 which essentially horizontally on a pivot axis 22 on the feeder frame 1 sits. At its opposite end the Lever 20 a main deflection roller 25.
  • This main deflection roller 25 is a lever-side inlet guide roller 24 in the tape running direction upstream.
  • the main deflection roller 25 steers the middle one Conveyor belt 19 essentially vertically upwards to one upper outer deflection roller 26, the middle conveyor belt 19th leads to the upper inner deflection roller 27.
  • the guide roller arrangement ensures 20 with its lever 21 and the elastically stretchable Element 23 for the middle conveyor belt 19 on the outside on the upper table conveyor belt 6 on part of the circumference of the Deflection drum 5 is present.
  • the middle conveyor belt 19 is from the upper table conveyor belt 6 removed in the peripheral region of the deflection drum 5, whereby the elastically extensible element 23 of the deflection roller arrangement stretched and the middle conveyor belt 19 against the scaled sheet stack 7 in the direction of the deflection drum 5 is pressed.
  • the stack receiving side Roll 12 of the lower table 11 in the direction of the deflection drum 5 pressed.
  • Guide bands 30 in the form of roller link chains laterally in Arrange distance from the middle conveyor belt 19 like this is shown in Fig. 2.
  • the flexible guide bands 30 are above the upper table 2 on the feeder frame 1 using a Rod 31 fixed, extend around the outside Deflection drum 5 around in the vicinity of the stack receiving side Roll 12 of the lower table 11, where it around a deflecting element 32 deflected in the form of a rod fixed to the feeder frame 1 and by means of an elastically stretchable element 33 am Feeder frame 1 with the help of a cross bar, not shown are attached.
  • Function and structure of the roller link chains are detailed in DE 37 32 419 C2 and EP 0 308 688 B1 described.

Description

Die Erfindung betrifft einen Rundstapelbogenanleger mit einem Anlegerrahmen, mit einem am Anlegerrahmen gehaltenen Obertisch, mit einem dem Obertisch zugeordneten, um wenigstens eine Rolle und eine Umlenktrommel geführten Obertischförderband, wobei die Rolle oder die Umlenktrommel drehangetrieben ist, mit einem Untertisch, mit einem dem Untertisch zugeordneten, um eine stapelaufnahmeseitige Rolle und eine stapelabgabeseitige drehangetriebene Rolle geführten Untertischförderband, wobei der Untertisch um seine stapelabgabeseitige Rolle verschwenkbar am Anlegerrahmen gehalten und gegen die Umlenktrommel federvorgespannt ist, und mit flexiblen Führungsbändern, die mit ihren einen Enden oberhalb des Obertisches befestigt sind, sich um einen Umfangsabschnitt der Umlenktrommel erstrecken, zwischen der stapelaufnahmeseitigen Rolle des Untertisches und einem Umlenkelement hindurchgeführt und unterhalb des Untertisches über elastisch dehnbare Elemente festgelegt sind.The invention relates to a circular stack feeder with a Feeder frame, with an upper table held on the feeder frame, with one assigned to the upper table, at least a roller and a deflection drum guided upper table conveyor belt, the roller or the deflection drum being driven in rotation is, with a lower table, with one assigned to the lower table, a roll on the stack receiving side and a stack discharge side rotary driven roller led under table conveyor, the under table around its stack delivery side Roll pivotally held on the feeder frame and against the Deflection drum is spring-biased, and with flexible guide bands, the one ends above the upper table are attached to a peripheral portion of the Extend the deflection drum between the stack receiving side Roll of the table and a deflecting element passed and underneath the under table via elastically stretchable elements are set.

Bei einem solchen gattungsbildenden, aus der DE 37 32 419 C2 und der EP 0 308 688 B1 bekannten Rundstapelbogenanleger sitzt der Untertisch an einem gesonderten Schwenkrahmen, der durch eine Gasfeder gegen die Umlenktrommel vorgespannt wird. Die Führung der schuppenförmig auf dem oberen Förderband gestapelten Bogen um die Umlenktrommel erfolgt mit Hilfe von flexiblen Rollengliederketten, die sich von oberhalb der Umlenktrommel außerhalb dieser bis zum Untertisch erstrecken, dort um ein Umlenkelement vor dem Übergabebereich der umgelenkten Bogen auf den Untertisch umgelenkt werden und mit Hilfe von federnd elastischen Elementen am Anlegerrahmen festgelegt sind. Diese elastischen Elemente weiten sich, wenn die Schicht aus schuppenförmig gestapelten Bogen um die Umlenktrommel läuft, die dabei von den flexiblen Rollengliederketten reibungsarm geführt und gegen die Umlenktrommel gedrückt gehalten werden.In such a generic, from DE 37 32 419 C2 and the circular stack feeder known from EP 0 308 688 B1 the under table on a separate swivel frame, which by a gas spring is biased against the pulley. The Guide of the scales stacked on the upper conveyor belt Bow around the pulley is done with the help of flexible Roller link chains that extend from above the pulley extend outside this to the under table, there by one Deflection element in front of the transfer area of the deflected sheet be redirected to the under table and with the help of springy elastic elements are fixed on the feeder frame. This elastic elements widen when the layer is scaly stacked sheet runs around the pulley which guided by the flexible roller link chains with low friction and kept pressed against the pulley.

Aus der DE 25 05 164 B1 ist ferner ein Rundstapelbogenanleger bekannt, der einen Anlegerrahmen, einen am Anlegerrahmen gehaltenen Obertisch sowie dem Obertisch zugeordnete, um wenigstens eine Rolle und eine Umlenktrommel im Abstand voneinander und parallel zueinander geführte Obertischförderbänder aufweist, wobei die Rolle oder die Umlenktrommel drehangetrieben ist und den Obertischförderbändern eine Spannvorrichtung zugeordnet ist. Der Rundstapelbogenanleger hat ferner einen Untertisch sowie dem Untertisch zugeordnete, im Abstand voneinander angeordnete und zueinander parallel laufende Untertischförderbänder, die um eine stapelabgabeseitige Rolle und um eine die Untertischförderbänder spannende Umlenkrollenanordnung zu einer äußeren und einer inneren Umlenkrolle oberhalb des Obertisches und um die Umlenktrommel außerhalb der Obertischförderbänder wieder zurück zur stapelabgabeseitigen Rolle geführt sind. Mit der Umlenkrollenanordnung für die Untertischförderbänder wirkt ein am Auslegerrahmen angelenkter Hebel zusammen, der eine Hauptumlenkrolle trägt, welcher eine am Anlegerrahmen gelagerte Einlaufumlenkrolle vorgeordnet ist, und dessen Verschwenkung ein am Anlegerrahmen festgelegtes elastisches dehnbares Element entgegenwirkt, das am Hebel gegenüber der hebelseitigen Einlaufumlenkrolle angreift.DE 25 05 164 B1 is also a circular stack feeder known, the one feeder frame, one on the feeder frame held upper table and the upper table assigned to at least one roller and a deflection drum at a distance from each other and upper table conveyor belts running parallel to each other has, wherein the roller or the deflection drum is driven in rotation and the upper table conveyor belts are a tensioning device assigned. The circular stack feeder also has a lower table and the lower table assigned at a distance arranged and running parallel to each other Under-table conveyor belts around a stack delivery roll and around a deflecting roller arrangement exciting the under-table conveyor belts to an outer and an inner deflection roller above the upper table and around the pulley outside the upper table conveyor belts back to the stack delivery side Role. With the pulley arrangement for the Under-table conveyor belts act as a link to the cantilever frame Lever together, which carries a main pulley, which one infeed pulley mounted on the feeder frame is arranged upstream, and its pivoting a fixed on the investor frame counteracts elastic stretchy element on the lever against the lever-side inlet guide roller.

Die der Erfindung zugrunde liegenden Aufgabe besteht darin, den Rundstapelbogenanleger der eingangs genannten gattungsbildenden Art so weiterzubilden, daß die Führung der geschuppten Bogenschicht um die Umlenktrommel vom Obertisch zum Untertisch verbessert wird. The object underlying the invention is the circular pile sheet feeder of the generic types mentioned at the beginning Kind in such a way that the leadership of the scaled Sheet layer around the pulley from the upper table to the lower table is improved.

Diese Aufgabe wird ausgehend vom Rundstapelbogenanleger der eingangs genannten Art dadurch gelöst, daß das Untertischförderband aus wenigstens zwei durch einen Zwischenraum getrennten parallel laufenden äußeren Förderbändern besteht, daß in dem Zwischenraum fluchtend zu den äußeren Förderbändern ein gesondertes mittleres Förderband in gleicher Richtung wie die äußeren Förderbänder laufend vorgesehen ist, daß das mittlere Förderband um die stapelabgabeseitige Rolle des Untertisches und um eine Umlenkrollenanordnung zu einer inneren Umlenkrolle oberhalb des Obertisches und um die Umlenktrommel außerhalb des Obertischförderbandes wieder zurück zur stapelabgabeseitigen Rolle des Untertisches geführt ist, und daß die flexiblen Führungsbänder jeweils seitlich von dem mittleren Förderband angeordnet sind, wobei der Umlenkrollenanordnung ein am Auslegerrahmen angelenkter Hebel zugeordnet ist, der wenigstens eine Hauptumlenkrolle trägt und dessen Verschwenkung ein am Anlegerrahmen festgelegtes elastisch dehnbares Element entgegenwirkt.This task is started from the circular stack feeder type mentioned solved in that the under-table conveyor from at least two separated by a space parallel running external conveyor belts there is that in alignment with the outer conveyor belts separate central conveyor belt in the same direction as that outer conveyor belts is continuously provided that the middle Conveyor belt around the roll of the under table on the stack delivery side and around a pulley arrangement to an inner pulley above the upper table and around the pulley outside the upper table conveyor belt back to the stack delivery side Role of the table is guided, and that the flexible Guide belts on each side of the middle conveyor belt are arranged, the deflecting roller arrangement on the boom frame articulated lever is assigned, at least carries a main pulley and its pivoting on Counteracts fixed elastic stretchable element counteracts.

Der so gestaltete Rundstapelbogenanleger hat den Vorteil, daß eine sichere Führung der Schicht aus schuppenförmig gestapelten Bogen vom Obertisch zum Untertisch gewährleistet ist, da die Schicht der Bogen von der Bogenübernahme vom Obertisch auf die Umlenktrommel bis zur Bogenabgabe vom Untertisch durch die Übernahme durch ein Saugrad von den Förderbändern gehalten und mit gleichbleibender Geschwindigkeit transportiert.The circular stack feeder designed in this way has the advantage that a secure guidance of the layer of stacked scales Arch from the upper table to the lower table is guaranteed because the layer of sheets from the sheet transfer from the top table to the pulley up to the delivery of sheets from the under table through the Pickup held by the conveyor belts by a suction wheel and transported at a constant speed.

Die Vorspannung des Untertisches gegen die Umlenktrommel wird dadurch erreicht, daß das mittlere Förderband im Kontakt mit der stapelaufnahmeseitigen Rolle des Untertisches auf ihrem von der Umlenktrommel abgewandten Umfangsabschnitt geführt ist. Wenn die Schicht aus schuppenförmigen Bogen das äußere mittlere Förderband von der Umlenktrommel wegdrücken, wird das elastische dehnbare Element, das am Hebel der Umlenkrollenanordnung angreift, gedehnt, d.h. mit Hilfe des Hebels wird das mittlere Förderband gegen die stapelaufnahmeseitige Rolle des Untertisches unterhalb der Umlenktrommel gedrückt.The preload of the lower table against the deflection drum is achieved in that the middle conveyor belt in contact with the stack receiving role of the under table on your guided by the peripheral portion facing away from the deflection drum is. If the layer of scaly arches the outer Push the middle conveyor belt away from the deflection drum elastic stretchable element that is on the lever of the pulley assembly attacks, stretches, i.e. with the help of the lever the middle conveyor belt against the stack receiving roll of the lower table below the pulley.

Zweckmäßigerweise hat die Umlenkrollenanordnung eine hebelseitige Einlaufumlenkrolle für eine Umlenkung des mittleren Förderbandes zum Hebel und der Einlaufseite der Hauptumlenkrolle hin sowie eine oberhalb des Obertisches am Anlegerrahmen gelagerte äußere obere Umlenkrolle. Diese Anordnung gewährleistet einen großen äußeren Umschlingungswinkel des um die Umlenkrolle geführten geschuppten Bogenstapels, ohne daß im Umlenksystem große Reibungen entstehen.The deflection roller arrangement expediently has a lever-side arrangement Inlet deflection roller for a deflection of the middle one Conveyor belt to the lever and the inlet side of the main pulley and one above the upper table on the feeder frame stored outer upper pulley. This arrangement ensures a large outer wrap angle around the Deflection roller guided scaled sheet stack without Deflection system creates great friction.

Vorteilhafterweise ist das elastisch dehnbare Element am Hebel gegenüber der hebelseitigen Einlaufumlenkrolle vorgesehen.The elastically stretchable element is advantageously on the lever opposite the lever-side inlet guide roller.

Anhand der Zeichnung wird eine beispielsweise Ausführungsform der Erfindung näher erläutert. Es zeigen

  • Fig. 1 eine schematische Seitenansicht des Rundstapelbogenanlegers und
  • Fig. 2 schematisch eine teilweise aufgeschnittene Draufsicht auf den Rundstapelbogenanleger von Fig. 1.
    • An example embodiment of the invention is explained in more detail with the aid of the drawing. Show it
  • Fig. 1 is a schematic side view of the circular stack feeder and
  • FIG. 2 schematically shows a partially cut-away top view of the circular stack feeder from FIG. 1.

    • Der in Fig. 1 und 2 gezeigte Rundstapelbogenanleger hat einen Auslegerrahmen 1, der zwei Seitenteile und Querteile aufweist. Der Anlegerrahmen 1 trägt einen Obertisch 2, der bogenaufnahmeseitig eine angetriebene Rolle 3 aufweist, um die wenigstens ein endloses Obertischförderband 6 umläuft, das auf der der angetriebenen Rolle 3 gegeüberliegenden Seite um eine Umlenktrommel 5 mit entsprechend großem Durchmesser geführt und nach einer Umschlingung von etwa zwei Drittel der Umlenktrommel 5 über eine weitere Umlenkrolle 4 als unteres Trumm zur angetriebenen Rolle 3 zurückgeführt ist.The circular stack feeder shown in FIGS. 1 and 2 has one Boom frame 1, which has two side parts and cross parts. The feeder frame 1 carries an upper table 2 on the sheet receiving side has a driven roller 3 to at least an endless upper table conveyor belt 6 rotates on the driven roller 3 opposite side around a deflection drum 5 guided with a correspondingly large diameter and after a loop of about two thirds of the deflection drum 5 via a further deflection roller 4 as the lower run to the driven one Roll 3 is returned.

    Unterhalb der Umlenktrommel 5 ist ein schräg nach oben führender Untertisch 11 angeordnet, der eine stapelaufnahmeseitige Rolle 12 und eine stapelabgabeseitige Rolle 13 aufweist, um die axial zu den Rollen 12 und 13 im Abstand zwei äußere Förderbänder 14 und 14' umlaufen, wobei die Rolle 13 angetrieben ist. Zwischen den äußeren Förderbändern 14 und 14' des Untertisches 11 ist, wie aus Fig. 2 zu ersehen ist, ein Zwischenraum 18 vorhanden, in welchem ein mittleres Förderband 19 fluchtend zu den äußeren Förderbändern 14 und 14' in der gleichen Umlaufrichtung wie diese umläuft.Below the deflection drum 5 is a leading obliquely upwards Arranged under table 11, one of the stack receiving side Roll 12 and a stack delivery-side roller 13 to the axially to the rollers 12 and 13 at a distance two outer Conveyor belts 14 and 14 'circulate, the roller 13 being driven is. Between the outer conveyor belts 14 and 14 'of Underneath table 11, as can be seen from FIG. 2, is an intermediate space 18, in which a middle conveyor belt 19th aligned with the outer conveyor belts 14 and 14 'in the in the same orbital direction as this.

    Das mittlere Förderband 19 wird ebenfalls von der stapelabgabeseitigen Rolle 13 wie die Förderbänder 14 und 14' angetrieben und läuft mit seinem unteren Trumm in Kontakt mit der von der Umlenktrommel 5 abgewandt Umfangseite der stapelaufnahmeseitigen Rolle 12 des Untertisches 11, zu einer Umlenkrollenanordnung 20, die das mittlere Förderband 19 oberhalb des Obertisches 2 zu einer oberen inneren Umlenkrolle 27 führt, die das mittlere Förderband 19 in Richtung der Umlenktrommel 5 umlenkt, den geschuppten Bogenstapel 7 gegen die Umlenktrommel 5 drückt und dabei den geschuppten Bogenstapel 7 um die Umlenktrommel 5 herum zum Untertisch 1 im Bereich der stapelaufnahmeseitigen Rolle 12 führt, so daß eine kontinuierliche Führung des geschuppten Bogenstapels 7 um die Umlenktrommel 5 herum bis zum Untertisch 11 gewährleistet ist.The middle conveyor belt 19 is also from the stack delivery side Roller 13 as the conveyor belts 14 and 14 'driven and runs with his lower run in contact with that of the deflection drum 5 facing away from the peripheral side of the stack receiving side Roller 12 of the lower table 11, to a deflection roller arrangement 20, the middle conveyor belt 19 above the Upper table 2 leads to an upper inner deflection roller 27, the middle conveyor belt 19 in the direction of the deflection drum 5 deflects the shingled sheet stack 7 against the deflection drum 5 presses and the scaled sheet stack 7 around the guide drum 5 around the under table 1 in the area of the stack receiving side Roll 12 leads, so that continuous guidance of the scaled sheet stack 7 around the deflection drum 5 around to the under table 11 is guaranteed.

    Die Umlenkrollenanordnung 20 besteht aus einem Hebel 21, der im wesentlichen horizontal auf einer Schwenkachse 22 am Anlegerrahmen 1 sitzt. An seinem gegenüberliegenden Ende trägt der Hebel 20 eine Hauptumlenkrolle 25. Dieser Hauptumlenkrolle 25 ist eine hebelseitige Einlaufumlenkrolle 24 in Bandlaufrichtung vorgeordnet. Die Hauptumlenkrolle 25 lenkt das mittlere Förderband 19 im wesentlichen vertikal nach oben zu einer oberen äußeren Umlenkrolle 26, die das mittlere Förderband 19 zur oberen inneren Umlenkrolle 27 führt.The deflection roller arrangement 20 consists of a lever 21 which essentially horizontally on a pivot axis 22 on the feeder frame 1 sits. At its opposite end the Lever 20 a main deflection roller 25. This main deflection roller 25 is a lever-side inlet guide roller 24 in the tape running direction upstream. The main deflection roller 25 steers the middle one Conveyor belt 19 essentially vertically upwards to one upper outer deflection roller 26, the middle conveyor belt 19th leads to the upper inner deflection roller 27.

    Auf der der hebelseitigen Einlaufumlenkrolle 24 gegenüberliegenden Seite greift am Hebel ein elastisch dehnbares Element 23 in Form einer Feder an, deren anderes Ende am Anlegerrahmen 1 festgelegt ist.On the inlet deflection roller 24 opposite the lever One side has an elastically stretchable element on the lever 23 in the form of a spring, the other end on the feeder frame 1 is set.

    Wenn keine Bogen befördert werden, sorgt die Umlenkrollenanordnung 20 mit ihrem Hebel 21 und dem elastisch dehnbaren Element 23 dafür, daß das mittlere Förderband 19 außenseitig an dem Obertischförderband 6 auf einem Teil des Umfangs der Umlenktrommel 5 anliegt.If no sheets are conveyed, the guide roller arrangement ensures 20 with its lever 21 and the elastically stretchable Element 23 for the middle conveyor belt 19 on the outside on the upper table conveyor belt 6 on part of the circumference of the Deflection drum 5 is present.

    Wenn nun der geschuppte Bogenstapel 7 auf das Förderband 6 des Obertisches 2 aufgelegt wird, gelangt er in den Einlaufteil 8 zwischen dem Obertischförderband 6 und dem mittleren Förderband 19. Dabei wird das mittlere Förderband 19 von dem Obertischförderband 6 im Umfangsbereich der Umlenktrommel 5 entfernt, wodurch das elastisch dehnbare Element 23 der Umlenkrollenanordnung gedehnt und das mittlere Förderband 19 gegen den geschuppten Bogenstapel 7 in Richtung der Umlenktrommel 5 gedrückt wird. Gleichzeitig wird dabei die stapelaufnahmeseitige Rolle 12 des Untertisches 11 in Richtung der Umlenktrommel 5 gedrückt. Mit Hilfe des mittleren Förderbandes 19 wird somit der geschuppte Bogenstapel 7 von der Bogenübernahme 8 bis zur Untertischabgabe 16 kontinuierlich geführt, wo die Bogen mittels eines Saugrades 17 für den Abtransport auf einem nicht gezeigten weiteren Förderer vereinzelt werden.If the scaled sheet stack 7 on the conveyor belt 6 of the Upper table 2 is placed, it arrives in the inlet part 8 between the upper table conveyor belt 6 and the middle conveyor belt 19. The middle conveyor belt 19 is from the upper table conveyor belt 6 removed in the peripheral region of the deflection drum 5, whereby the elastically extensible element 23 of the deflection roller arrangement stretched and the middle conveyor belt 19 against the scaled sheet stack 7 in the direction of the deflection drum 5 is pressed. At the same time, the stack receiving side Roll 12 of the lower table 11 in the direction of the deflection drum 5 pressed. With the help of the middle conveyor belt 19 thus the scaled sheet stack 7 from the sheet transfer 8 until the under-table delivery 16, where the Bow by means of a suction wheel 17 for removal on a other sponsors not shown can be isolated.

    Anstelle des einen gezeigten mittleren Förderbandes 19, können mehrere solche mittlere Förderbänder zusammen mit äußeren Förderbändern 14 und 14' des Untertisches 11 verwendet werden. Instead of the one middle conveyor belt 19 shown, can several such medium conveyor belts together with outer ones Conveyor belts 14 and 14 'of the lower table 11 are used.

    Für größerformatige Bogen empfiehlt es sich jedoch flexible Führungsbänder 30 in Form von Rollengliederketten seitlich im Abstand von dem mittleren Förderband 19 anzuordnen, wie dies in Fig. 2 gezeigt ist. Die flexiblen Führungsbänder 30 sind oberhalb des Obertisches 2 am Anlegerrahmen 1 mit Hilfe einer Stange 31 festgelegt, erstrecken sich außenseitig um die Umlenktrommel 5 herum bis in die Nähe der stapelaufnahmeseitigen Rolle 12 des Untertisches 11, wo sie um ein Umlenkelement 32 in Form einer am Anlegerrahmen 1 festgelegten Stange umgelenkt und mittels eines elastisch dehnbaren Elements 33 am Anlegerrahmen 1 mit Hilfe einer nicht gezeigten Querstange befestigt sind. Funktion und Aufbau der Rollengliederketten sind in der DE 37 32 419 C2 und der EP 0 308 688 B1 im einzelnen beschrieben.For larger-sized sheets, however, flexible is recommended Guide bands 30 in the form of roller link chains laterally in Arrange distance from the middle conveyor belt 19 like this is shown in Fig. 2. The flexible guide bands 30 are above the upper table 2 on the feeder frame 1 using a Rod 31 fixed, extend around the outside Deflection drum 5 around in the vicinity of the stack receiving side Roll 12 of the lower table 11, where it around a deflecting element 32 deflected in the form of a rod fixed to the feeder frame 1 and by means of an elastically stretchable element 33 am Feeder frame 1 with the help of a cross bar, not shown are attached. Function and structure of the roller link chains are detailed in DE 37 32 419 C2 and EP 0 308 688 B1 described.

    Claims (4)

    1. Feeding device for feeding a stack of sheets along a curved path
      having a feeding device frame (1),
      having an upper table (2) held on the feeding device frame (1),
      having at least one upper table conveyor belt (6) associated with the upper table (2) and guided around at least one roller (3, 4) and a deflecting drum (5),
      the roller (3) or the deflecting drum (5) being rotationally driven,
      having a lower table (11)
      having a lower table conveyor belt (14, 14') associated with the lower table (11) and guided around a roller (12) which is arranged on the stack-receiving side and around a roller (13) which is rotationally driven and which is arranged on the stack-delivery side,
      the lower table (11) being held on the feeding device frame (1) to be pivotable about its roller (13) arranged on the stack-delivery side and being resiliently biased towards the deflecting drum (5), and
      having flexible guide belts (30) which are fastened by their first ends (31) above the upper table (2), extend around a circumferential portion of the deflecting drum (5), are guided between the roller (12) of the lower table (11), which roller (12) is arranged on the stack-receiving side, and a deflecting member (32), and, below the lower table (11), they are secured to the feeding device frame by means of resiliently expandable members (33),
         characterised in that
      the lower table conveyor belt comprises at least two outer conveyor belts (14, 14') which extend in parallel and which are separated by an intermediate space (18),
      a separate middle conveyor belt (19) is provided in the intermediate space (18) in alignment with the outer conveyor belts (14, 14') and extends in the same direction as the outer conveyor belts (14, 14'),
      the middle conveyor belt (19) is guided around the roller (13) of the lower table (11), which roller (13) is arranged on the stack-delivery side, and around a deflecting roller arrangement (20) to an inner deflecting roller (27) above the upper table (2) and around the deflecting drum (5) outside the upper table conveyor belt (6) back to the roller (13) of the lower table (11), which roller (13) is arranged on the stack-delivery side and,
      the flexible guide belts (30) are arranged to each side of the middle conveyor belt (19),
      the deflecting roller arrangement (20) being associated with a lever (21) articulated to the feeding device frame (1), which lever (21) carries at least a main deflecting roller (25) and the pivoting of which is opposed by a resiliently expandable member (23) secured to the feeding device frame (1).
    2. Feeding device for feeding a stack of sheets along a curved path according to claim 1, characterised in that, in order to bias the lower table (11) towards the deflecting drum (5), the middle conveyor belt (19) is guided in contact with the roller (12) of the lower table (11), which roller (12) is arranged on the stack-receiving side, on the roller's circumferential portion remote from the deflecting drum.
    3. Feeding device for feeding a stack of sheets along a curved path according to claim 1 or 2, characterised in that the deflecting roller arrangement (20) has a run-in deflecting roller (24), which is provided on the side where the lever is arranged, for deflecting the middle conveyor belt (19) towards the lever (21) and towards the run-in side of the main deflecting roller (25), and an upper outer deflecting roller (26) supported above the upper table (2) on the feeding device frame (1).
    4. Feeding device for feeding a stack of sheets along a curved path according to any one of claims 1 to 3, characterised in that the resiliently expandable member (23) acts on the lever (21) in a position opposite the run-in deflecting roller (24) provided on the side where the lever is arranged.
    EP19980112505 1997-08-11 1998-07-06 Feeding device for a stack of sheets along a curved path Expired - Lifetime EP0896938B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE19734768 1997-08-11
    DE1997134768 DE19734768C1 (en) 1997-08-11 1997-08-11 Circulating sheet stack applicator

    Publications (3)

    Publication Number Publication Date
    EP0896938A2 EP0896938A2 (en) 1999-02-17
    EP0896938A3 EP0896938A3 (en) 1999-05-12
    EP0896938B1 true EP0896938B1 (en) 2002-03-06

    Family

    ID=7838651

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP19980112505 Expired - Lifetime EP0896938B1 (en) 1997-08-11 1998-07-06 Feeding device for a stack of sheets along a curved path

    Country Status (2)

    Country Link
    EP (1) EP0896938B1 (en)
    DE (1) DE19734768C1 (en)

    Families Citing this family (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    NL1025159C2 (en) * 2003-12-31 2005-07-04 Neopost Sa Device for transporting sheets along a conveyor track with a bend extending around a conveyor roller.

    Family Cites Families (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE1960543A1 (en) * 1968-12-17 1970-10-29 Polygraph Leipzig Pile turning device for round pile sheet feeder
    DE3732419C1 (en) * 1987-09-25 1989-01-19 Oppenweiler Binder Gmbh Maschb Round pile sheet feeder

    Also Published As

    Publication number Publication date
    EP0896938A3 (en) 1999-05-12
    DE19734768C1 (en) 1998-12-17
    EP0896938A2 (en) 1999-02-17

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