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EP0574710A1 - Device for laying down books - Google Patents

Device for laying down books Download PDF

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Publication number
EP0574710A1
EP0574710A1 EP93107939A EP93107939A EP0574710A1 EP 0574710 A1 EP0574710 A1 EP 0574710A1 EP 93107939 A EP93107939 A EP 93107939A EP 93107939 A EP93107939 A EP 93107939A EP 0574710 A1 EP0574710 A1 EP 0574710A1
Authority
EP
European Patent Office
Prior art keywords
speed
rollers
conveyor
depositing
product
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP93107939A
Other languages
German (de)
French (fr)
Other versions
EP0574710B1 (en
Inventor
Reimar Staudinger
Günter Geldmeier
Wilfried Müller
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.)
Kolbus GmbH and Co KG
Original Assignee
Kolbus GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kolbus GmbH and Co KG filed Critical Kolbus GmbH and Co KG
Publication of EP0574710A1 publication Critical patent/EP0574710A1/en
Application granted granted Critical
Publication of EP0574710B1 publication Critical patent/EP0574710B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/20—Delivering or advancing articles from machines; Advancing articles to or into piles by contact with rotating friction members, e.g. rollers, brushes, or cylinders
    • B65H29/22—Delivering or advancing articles from machines; Advancing articles to or into piles by contact with rotating friction members, e.g. rollers, brushes, or cylinders and introducing into 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
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/68—Reducing the speed of articles as they advance
    • 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
    • B65H2301/42—Piling, depiling, handling piles
    • B65H2301/422—Handling piles, sets or stacks of articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2403/00—Power transmission; Driving means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/14—Roller pairs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/20—Acceleration or deceleration

Definitions

  • the invention relates to a depositing device for books, book blocks, magazines, sheet piles or the like. Products which are fed in a product stream from a conveyor at high speed and which are fed to a depositing point against a stop.
  • Products emerging from a bookbinding machine such as books, book blocks, magazines, sheet stacks or the like are often deposited in the form of stacks.
  • the products released continuously by the bookbinding machine run in relatively close succession or directly adjacent to one another on a transfer conveyor which feeds them to a stacking station, the products to be stacked being aligned at a stop for position-specific storage.
  • a device for forming a stack of upright folded sheets is known with brake rollers between a transfer conveyor and a stacking table.
  • the brake rollers are countered Lower rotational speed driven by the speed of the transfer conveyor and transfer the folded sheets to the stacking table at this reduced speed, thereby preventing the folded sheets from rebounding and compressing.
  • the object of the invention is to provide a depositing device of the generic type which ensures gentle treatment and aligned products of products which are fed in at high speed and are close to one another or directly adjacent to one another.
  • the depositing device is characterized by the rotatingly driven conveying means which take over the products successively from a conveyor and transport to a depositing point, the speed of which can be regulated in such a way that the product to be deposited is first accelerated to separate from the product stream and then decelerated for depositing on the depositing point becomes.
  • stacks 1 of folded printed sheets or blocks etc. arrive in a continuous stream on a transfer conveyor 2.
  • a stacking magazine 3 with a stop 4 there is a pair of rollers with a lower roller 6 and an upper roller 7, which take over the stacks 1 from the transfer conveyor 2 and convey them further into the stack magazine.
  • the two rollers 6 and 7 are driven by a controllable drive motor synchronously with an increased rotational speed compared to the speed of the transfer conveyor 2, which means that a stack taken over by the roller pair is brought to a defined distance from a subsequent stack.
  • the drive motor receives a command to briefly reduce the rotational speed of the two rollers 6 and 7 compared to the speed of the transfer conveyor 2, and the stack 1 is now fed to the stack magazine 3 with braking. This reliably prevents the stack 1 from bouncing off the magazine stop 4.
  • the decisive factor here is the positioning of the light barrier 8 which releases the brake in relation to the stop 4.
  • the stack 1 In order to prevent the stack 1 from tipping over the lower roller 6, the stack 1 must be conveyed into the magazine 3 at a relatively high speed. Braking may only take place immediately before stop 4 is reached.
  • a freely rotatable counter-pressure roller can be used for stacking products that are stable in themselves, such as books and single sheets.
  • the speed of the lower 6 and the upper roller 7 can be regulated in such a way that the path length of a product transported through the rollers 6 and 7 to a sensor 8 'is detected by means of an incremental encoder 9, which thereby measures the path length of the product 1 in the rollers 6 and 7 detected.
  • the incremental encoder 9 uses a computer to determine the start for the braking process as a function of the product format and the feed speed.
  • FIG. 2 shows a modified embodiment of the invention, in which two pairs of rollers arranged one behind the other in the transport direction are seen, of which the rollers 10, 11 immediately following the transfer conveyor 2 function as acceleration rollers and the rollers 12, 13 adjoining them function as brake rollers.
  • the acceleration rollers 10, 11 are driven continuously by a controllable drive motor at a higher speed and the brake rollers 12, 13 permanently at a lower speed.
  • the lower brake roller 12 is positioned lower relative to the lower acceleration roller 10 and the upper brake roller 13 is positioned higher relative to the upper acceleration roller 11, the upper brake roller 13 and the upper acceleration roller 11 being located on a slightly angled support arm 14, which is freely pivotable about a pivot point 15.

Landscapes

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

Abstract

In a device for laying down books, book blocks, periodicals, sheet stacks or similar products which are fed in a product stream by a high-speed conveyor and are fed to a lay-down point on contact with a stop, conveying means (6, 7; 10-13) are provided which are driven to rotate. In this arrangement, the speed of the conveying means (6, 7; 10-13) is regulated so that the product (1) to be laid down is initially accelerated to separate it from the product flow and then braked to be laid down on the lay-down point (3). <IMAGE>

Description

Die Erfindung bezieht sich auf eine Ablegeeinrichtung für Bücher, Buchblocks, Zeitschriften, Bogenstapel o. dgl. Produkte, die in einem Produktstrom von einem Förderer mit hoher Geschwindigkeit zugeführt und unter Anlage an einem Anschlag einer Ablegestelle zugeführt werden.The invention relates to a depositing device for books, book blocks, magazines, sheet piles or the like. Products which are fed in a product stream from a conveyor at high speed and which are fed to a depositing point against a stop.

Aus einer Buchbindemaschine austretende Produkte wie Bücher, Buchblocks, Zeitschriften, Bogenstapel o. dgl. werden vielfach in Form von Stapeln abgelegt. Dabei laufen die von der Buchbindemaschine kontinuierlich freigegebenen Produkte in relativ dichter Folge hintereinander oder unmittelbar aneinanderliegend auf einen Übergabeförderer, der sie einer Stapelstelle zuführt, wobei sich die zu stapelnden Produkte zum positionsbestimmten Ablegen an einem Anschlag ausrichten.Products emerging from a bookbinding machine such as books, book blocks, magazines, sheet stacks or the like are often deposited in the form of stacks. The products released continuously by the bookbinding machine run in relatively close succession or directly adjacent to one another on a transfer conveyor which feeds them to a stacking station, the products to be stacked being aligned at a stop for position-specific storage.

Durch schlagartiges Auftreffen der Produkte auf den Anschlag läßt sich bei hohen Produktionsgeschwindigkeiten einerseits die gewünschte Ausrichtung der Produkte zueinander nicht sicherstellen, andererseits kann eine Beschädigung empfindlicher Produkte infolge Stauchens auftreten.If the products suddenly hit the stop, the desired alignment of the products to one another cannot be ensured at high production speeds, on the other hand damage to sensitive products as a result of compression can occur.

Aus der DE-OS 39 38 536 ist eine Vorrichtung zur Bildung eines Stapels aus hochkant stehenden Falzbogen bekannt mit Bremsrollen zwischen einem Übergabeförderer und einem Stapeltisch. Die Bremsrollen werden mit einer gegen über der Geschwindigkeit des Übergabeförderers geringeren Umlaufgeschwindigkeit angetrieben und übergeben die Falzbogen mit dieser verringerten Geschwindigkeit an den Stapeltisch, wodurch ein Abprallen und Stauchen der Falzbogen verhindert werden soll. Um ein Auflaufen eines folgenden Falzbogens auf einen voranlaufenden gebremsten Falzbogen auszuschließen, muß ein ausreichend großer Zwischenraum zwischen den einzelnen von der Falzmaschine ausgeworfenen Falzbogen zur Verfügung stehen. Dicht aufeinanderfolgende Falzbogen oder unmittelbar aneinanderliegende lassen sich nicht vor dem Auftreffen auf den Stapeltisch abbremsen.From DE-OS 39 38 536 a device for forming a stack of upright folded sheets is known with brake rollers between a transfer conveyor and a stacking table. The brake rollers are countered Lower rotational speed driven by the speed of the transfer conveyor and transfer the folded sheets to the stacking table at this reduced speed, thereby preventing the folded sheets from rebounding and compressing. In order to prevent a following folded sheet from running onto a braked folded sheet leading in advance, there must be a sufficiently large space between the individual folded sheets ejected by the folding machine. Tightly consecutive folded sheets or immediately adjacent one another cannot be braked before hitting the stacking table.

Die Aufgabe der Erfindung besteht darin, eine Ablegeeinrichtung der gattungsgemäßen Art zu schaffen, die eine schonende Behandlung und ausgerichtete Produkte von mit hoher Geschwindigkeit zugeführten und dicht aufeinanderfolgenden oder unmittelbar aneinanderliegenden Produkten sicherstellt.The object of the invention is to provide a depositing device of the generic type which ensures gentle treatment and aligned products of products which are fed in at high speed and are close to one another or directly adjacent to one another.

Zur Lösung dieser Aufgabe ist die erfindungsgemäße Ablegeeinrichtung gekennzeichnet durch die Produkte nacheinander von einem Förderer übernehmende und zu einer Ablegestelle transportierende umlaufend angetriebene Fördermittel, deren Geschwindigkeit derart regelbar ist, daß das abzulegende Produkt zum Trennen vom Produktstrom zunächst beschleunigt und danach zum Ablegen auf der Ablegestelle abgebremst wird.To achieve this object, the depositing device according to the invention is characterized by the rotatingly driven conveying means which take over the products successively from a conveyor and transport to a depositing point, the speed of which can be regulated in such a way that the product to be deposited is first accelerated to separate from the product stream and then decelerated for depositing on the depositing point becomes.

Weitere vorteilhafte Merkmale ergeben sich aus den Unteransprüchen.Further advantageous features emerge from the subclaims.

Die Erfindung wird nachstehend anhand der Beschreibung von Ausführungsbeispielen und unter Bezugnahme auf die Zeichnung näher erläutert. Es zeigen:

Fig. 1
eine Ablegeeinrichtung in einer Seitenansicht;
fig. 2
eine abgewandelte Ausführungsform der Ablegeeinrichtung ebenfalls in einer Seitenansicht.
The invention is explained below with reference to the description of exemplary embodiments and with reference to the drawing. Show it:
Fig. 1
a storage device in a side view;
fig. 2nd
a modified embodiment of the storage device also in a side view.

Aus einer vorgeschalteten mit hoher Produktionsgeschwindigkeit laufenden Buchbindemaschine gelangen Stapel 1 von gefalzten Druckbogen oder Blocks usw. in einem lückenlosen Strom auf einen Übergabeförderer 2. Zwischen diesem und einem Stapelmagazin 3 mit einem Anschlag 4 befindet sich ein Walzenpaar mit einer unteren Walze 6 und einer oberen Walze 7, die die Stapel 1 von dem Übergabeförderer 2 übernehmen und in das Stapelmagazin weiterfördern. Die beiden Walzen 6 und 7 werden über einen regelbaren Antriebsmotor synchron mit einer gegenüber der Geschwindigkeit des Übergabeförderers 2 erhöhten Umlaufgeschwindigkeit angetrieben, was dazu führt, daß ein von dem Walzenpaar übernommener Stapel auf einen definierten Abstand zu einem folgenden Stapel gebracht wird.From an upstream bookbinding machine running at high production speed, stacks 1 of folded printed sheets or blocks etc. arrive in a continuous stream on a transfer conveyor 2. Between this and a stacking magazine 3 with a stop 4 there is a pair of rollers with a lower roller 6 and an upper roller 7, which take over the stacks 1 from the transfer conveyor 2 and convey them further into the stack magazine. The two rollers 6 and 7 are driven by a controllable drive motor synchronously with an increased rotational speed compared to the speed of the transfer conveyor 2, which means that a stack taken over by the roller pair is brought to a defined distance from a subsequent stack.

Erreicht der vom Strom abgetrennte Stapel 1 mit seiner Hinterkante eine Lichtschranke 8 erhält der Antriebsmotor einen Befehl zur kurzzeitigen Verringerung der Umlaufgeschwindigkeit der beiden Walzen 6 und 7 gegenüber der Geschwindigkeit des Übergabeförderers 2 und der Stapel 1 wird nun abgebremst dem Stapelmagazin 3 zugeführt. Ein Abprallen des Stapels 1 an dem Magazinanschlag 4 wird hierdurch sicher verhindert.If the stack 1 separated from the current reaches a light barrier 8 with its rear edge, the drive motor receives a command to briefly reduce the rotational speed of the two rollers 6 and 7 compared to the speed of the transfer conveyor 2, and the stack 1 is now fed to the stack magazine 3 with braking. This reliably prevents the stack 1 from bouncing off the magazine stop 4.

Entscheidend dabei ist die Positionierung der das Abbremsen aus lösenden Lichtschranke 8 in Bezug auf den Anschlag 4. Um ein Abkippen des Stapels 1 über die untere Walze 6 zu verhindern, muß der Stapel 1 mit einer relativ hohen Geschwindigkeit in das Magazin 3 befördert werden. Das Abbremsen darf erst unmittelbar vor Erreichen des Anschlags 4 erfolgen.The decisive factor here is the positioning of the light barrier 8 which releases the brake in relation to the stop 4. In order to prevent the stack 1 from tipping over the lower roller 6, the stack 1 must be conveyed into the magazine 3 at a relatively high speed. Braking may only take place immediately before stop 4 is reached.

Anstelle der oberen synchron angetriebenen Walze 7 kann zum Abstapeln von in sich stabilen Produkten, wie Bücher und Einzelbogen, eine frei drehbar gelagerte Gegendruckwalze Verwendung finden.Instead of the upper synchronously driven roller 7, a freely rotatable counter-pressure roller can be used for stacking products that are stable in themselves, such as books and single sheets.

In einer vorteilhaften Weiterbildung dieses Ausführungsbeispiels kann die Geschwindigkeit der unteren 6 und der oberen Walze 7 derart geregelt sein, daß die Weglänge eines durch die Walzen 6 und 7 bis zu einem Sensor 8' vortransportieren Produktes mittels eines Inkrementalgebers 9 erfaßt wird, der dabei die Weglänge des Produktes 1 in den Walzen 6 und 7 erfaßt. Der Inkrementalgeber 9 ermittelt mit Hilfe eines Rechners den Start für den Bremsvorgang in Abhängigkeit vom Produktformat und von der Zulaufgeschwindigkeit.In an advantageous further development of this exemplary embodiment, the speed of the lower 6 and the upper roller 7 can be regulated in such a way that the path length of a product transported through the rollers 6 and 7 to a sensor 8 'is detected by means of an incremental encoder 9, which thereby measures the path length of the product 1 in the rollers 6 and 7 detected. The incremental encoder 9 uses a computer to determine the start for the braking process as a function of the product format and the feed speed.

In Figur 2 wird eine abgewandelte Ausführungsform der Erfindung dargestellt, in der zwei in Transportrichtung hintereinander angeordnete Walzenpaare vor gesehen sind, von denen die dem Übergabeförderer 2 unmittelbar folgenden Walzen 10, 11 als Beschleunigungswalzen und die sich daran anschließenden Walzen 12, 13 als Bremswalzen fungieren.FIG. 2 shows a modified embodiment of the invention, in which two pairs of rollers arranged one behind the other in the transport direction are seen, of which the rollers 10, 11 immediately following the transfer conveyor 2 function as acceleration rollers and the rollers 12, 13 adjoining them function as brake rollers.

Bezogen auf die Geschwindigkeit des Übergabeförderers 2 sind die Beschleunigungswalzen 10, 11 von einem regelbaren Antriebsmotor aus permanent mit höherer und die Bremswalzen 12, 13 permanent mit geringerer Geschwindigkeit umlaufend angetrieben. Um eine wechselweise Wirkung zu erzielen, ist die untere Bremswalze 12 gegenüber der unteren Beschleunigungswalze 10 tiefer und die obere Bremswalze 13 gegenüber der oberen Beschleunigungswalze 11 höher positioniert, wobei sich die obere Bremswalze 13 und die obere Beschleunigungswalze 11 an einem leicht abgewinkelten Tragarm 14 befinden, der um einen Drehpunkt 15 frei schwenkbar gelagert ist.In relation to the speed of the transfer conveyor 2, the acceleration rollers 10, 11 are driven continuously by a controllable drive motor at a higher speed and the brake rollers 12, 13 permanently at a lower speed. In order to achieve an alternating effect, the lower brake roller 12 is positioned lower relative to the lower acceleration roller 10 and the upper brake roller 13 is positioned higher relative to the upper acceleration roller 11, the upper brake roller 13 and the upper acceleration roller 11 being located on a slightly angled support arm 14, which is freely pivotable about a pivot point 15.

Claims (6)

Ablegeeinrichtung für Bücher, Buchblocks, Zeitschriften, Bogenstapel o. dgl. Produkte, die in einem Produktstrom von einem Förderer mit hoher Geschwindigkeit zugeführt und unter Anlage an einem Anschlag einer Ablegestelle zugeführt werden, gekennzeichnet durch die Produkte (1) nacheinander von einem Förderer (2) übernehmende und zu einer Ablegestelle (3) transportierende umlaufend angetriebene Fördermittel (6, 7; 10-13), deren Geschwindigkeit derart regelbar ist, daß das abzulegende Produkt (1) zum Trennen vom Produktstrom zunächst beschleunigt und danach zum Ablegen auf der Ablegestelle (3) abgebremst wird.Filing device for books, book blocks, magazines, sheet piles or the like.Products that are fed in a product stream from a conveyor at high speed and are fed to a depositing point against a stop, characterized by the products (1) successively by a conveyor (2 ) rotating conveying means (6, 7; 10-13) which take over and transport to a depositing point (3), the speed of which can be regulated in such a way that the product (1) to be deposited first accelerates to separate it from the product stream and then to deposit it on the depositing point ( 3) is braked. Ablegeeinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Fördermittel aus einer unteren (6) und oberen Walze (7) gebildet sind, die gemeinsam wechselweise mit einer bezogen auf die Geschwindigkeit des Förderers (2) höheren und geringeren Geschwindigkeit antreibbar sind.Depositing device according to claim 1, characterized in that the conveying means are formed from a lower (6) and an upper roller (7) which can be driven alternately at a higher and lower speed relative to the speed of the conveyor (2). Ablegeeinrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Geschwindigkeit der unteren (6) und oberen Walzen (7) derart regelbar ist, daß die Weglänge eines durch die Walzen (6, 7) bis zu einem Sensor (8') vortransportierten Produktes (1) von einem Inkrementalgeber (9) erfaßt und mittels eines Rechners in Abhängigkeit von Produktformat und Zulaufgeschwindigkeit der Beginn des Bremsvorgangs ermittelt wird.Depositing device according to claim 2, characterized in that the speed of the lower (6) and upper rollers (7) can be regulated in such a way that the path length of one through the rollers (6, 7) to a sensor (8 ') pre-transported product (1) is detected by an incremental encoder (9) and the start of the braking process is determined by means of a computer as a function of the product format and feed speed. Ablegeeinrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die obere Walze (7) frei drehbar gelagert ist.Laying device according to claim 2 or 3, characterized in that the upper roller (7) is freely rotatable. Ablegeeinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Fördermittel aus zwei hintereinander angeordneten Walzenpaaren (10, 11; 12, 13) gebildet sind, wobei die dem Förderer (2) unmittelbar nach geordneten Walzen (10, 11) mit einer bezogen auf die Geschwindigkeit des Förderers (2) höheren und die nachgestellten Walzen (12, 13) mit einer geringeren Geschwindigkeit antreibbar sind.A depositing device according to claim 1, characterized in that the conveying means are formed from two pairs of rollers (10, 11; 12, 13) arranged one behind the other, the rollers (10, 11) arranged directly after the conveyor (2) with a speed the conveyor (2) higher and the adjusted rollers (12, 13) can be driven at a lower speed. Ablegeeinrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die mit geringerer Geschwindigkeit antreibbaren Walzen (12, 13) gegenüber den mit höherer Geschwindigkeit antreibbaren Walzen (10, 11) zurückliegend positioniert sind und sich die beiden oberen Walzen (11, 13) an einem gemeinsamen um einen Drehpunkt (15) frei schwenkbaren Tragarm (14) befinden.Laying device according to Claim 5, characterized in that the rollers (12, 13) which can be driven at a lower speed are positioned behind the rollers (10, 11) which can be driven at a higher speed, and the two upper rollers (11, 13) are in common around one another a pivot point (15) freely pivoting support arm (14).
EP93107939A 1992-06-19 1993-05-15 Device for laying down books Expired - Lifetime EP0574710B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4219982 1992-06-19
DE4219982A DE4219982A1 (en) 1992-06-19 1992-06-19 Stacking device for books

Publications (2)

Publication Number Publication Date
EP0574710A1 true EP0574710A1 (en) 1993-12-22
EP0574710B1 EP0574710B1 (en) 1995-09-13

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ID=6461305

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93107939A Expired - Lifetime EP0574710B1 (en) 1992-06-19 1993-05-15 Device for laying down books

Country Status (4)

Country Link
US (1) US5375692A (en)
EP (1) EP0574710B1 (en)
JP (1) JPH0672611A (en)
DE (2) DE4219982A1 (en)

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Also Published As

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JPH0672611A (en) 1994-03-15
DE4219982A1 (en) 1993-12-23
DE59300582D1 (en) 1995-10-19
US5375692A (en) 1994-12-27
EP0574710B1 (en) 1995-09-13

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