EP0187344A1 - Method and device for the production of single stacks consisting of a fan folded web - Google Patents

Method and device for the production of single stacks consisting of a fan folded web Download PDF

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Publication number
EP0187344A1
EP0187344A1 EP85116319A EP85116319A EP0187344A1 EP 0187344 A1 EP0187344 A1 EP 0187344A1 EP 85116319 A EP85116319 A EP 85116319A EP 85116319 A EP85116319 A EP 85116319A EP 0187344 A1 EP0187344 A1 EP 0187344A1
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EP
European Patent Office
Prior art keywords
material web
stack
separating
conveying
conveyor
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
EP85116319A
Other languages
German (de)
French (fr)
Other versions
EP0187344B1 (en
Inventor
Willi Felix
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.)
JOS HUNKELER AG FABRIK fur GRAPHISCHE MASCHINEN
Original Assignee
JOS HUNKELER AG FABRIK fur GRAPHISCHE MASCHINEN
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Publication date
Application filed by JOS HUNKELER AG FABRIK fur GRAPHISCHE MASCHINEN filed Critical JOS HUNKELER AG FABRIK fur GRAPHISCHE MASCHINEN
Publication of EP0187344A1 publication Critical patent/EP0187344A1/en
Application granted granted Critical
Publication of EP0187344B1 publication Critical patent/EP0187344B1/en
Expired 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
    • B65H45/00—Folding thin material
    • B65H45/02—Folding limp material without application of pressure to define or form crease lines
    • B65H45/06—Folding webs
    • B65H45/10—Folding webs transversely
    • B65H45/101—Folding webs transversely in combination with laying, i.e. forming a zig-zag pile
    • B65H45/1015—Folding webs provided with predefined fold lines; Refolding prefolded webs, e.g. fanfolded continuous forms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/10—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with devices for breaking partially-cut or perforated webs, e.g. bursters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/11—Dimensional aspect of article or web
    • B65H2701/112—Section geometry
    • B65H2701/1123—Folded article or web
    • B65H2701/11231—Fan-folded material or zig-zag or leporello
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T225/00—Severing by tearing or breaking
    • Y10T225/10—Methods
    • Y10T225/16—Transversely of continuously fed work
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T225/00—Severing by tearing or breaking
    • Y10T225/30—Breaking or tearing apparatus
    • Y10T225/35—Work-parting pullers [bursters]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T225/00—Severing by tearing or breaking
    • Y10T225/30—Breaking or tearing apparatus
    • Y10T225/393—Web restrainer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2033—Including means to form or hold pile of product pieces
    • Y10T83/2037—In stacked or packed relation
    • Y10T83/2046—Including means to move stack bodily
    • Y10T83/2048—By movement of stack holder
    • Y10T83/205—By timed relocation of holder along path of stack gscheme-change-itemth

Definitions

  • the invention relates to a method and a device for producing individual stacks consisting of a zigzag folded material web according to the preamble of claim 1 and claim 5.
  • a separating device in which two conveyor roller pairs are arranged adjacent to one another and are driven in the same direction and at the same speed for advancing the material web.
  • the rear pair of rollers seen in the conveying direction is now stopped, while the other pair of rollers continues to convey the material web.
  • this device is less for applications in which the material web is moved at high speed and often has to be separated, because of the frequent rapid acceleration of said one pair of rollers after each cutting operation suitable.
  • this one pair of rollers must also exert a certain pressure on the material web during conveying in order to be able to clamp it sufficiently strongly when it is stopped. In the case of thin material webs, this is difficult and can lead to damage to the material web.
  • the present invention is based on the object of creating a method and a device which, in addition to a safe separation of the material web along predetermined separation lines, also enables problem-free stack formation with structurally simple means even at high working speeds.
  • the separation point does not change its position during the separation, that is the rear edge of the material web part to be stacked has a precisely defined position, which facilitates the subsequent controlled zigzag folding and placing on the stack.
  • the stack forming process is interrupted until the finished stack has been carried away and the stack forming device is again ready to form a new stack.
  • a part of the continuously occurring material web is preferably temporarily stored in a buffer memory which, after the material web has been separated, can be reduced to its desired height again by briefly increasing the working speed.
  • elements of the feed device for the material web can be used, which simplifies the construction.
  • the material web 2 e.g. made of paper for printers of EDP systems, has perforation lines running along their edges, into which the teeth of a conveyor element 4 driven by the motor 3 engage.
  • the material web 2 has, at regular intervals corresponding to the width of the stack 1 to be formed, perforation lines running transversely along which the folding takes place during stack formation and on which the material web has been pre-folded in an upstream folding device 6.
  • the pre-folding along the transverse perforation lines makes folding easier during the manufacture of the stack 1 and also ensures the exact and easy separation of the material web along such a perforation line.
  • a folding device suitable for use in the device according to the invention is described in more detail in DE-OS 33 44 260.
  • the driven conveyor element 4 removes the material web 2 from the intermediate stack 7, which forms a buffer for the workflow, via a deflection roller 5 pulled and fed a conveyor roller 8 also driven by the drive 3.
  • the material web 2 is deflected vertically downwards by a guide by means of at least one rotating pressure roller 9, past a clamping strip 10, to an oscillating guide 12 which, by its oscillating movement, folds the material web in a known manner on the lifting table 14 in a manner known per se to form the stack 1.
  • the mentioned terminal strip 10, which is fixed, is opposite a movable terminal strip 11, which can be pressed against the fixed terminal strip 10 by a controlled linear actuator 13 in order to be able to hold the material web.
  • the vibration guide 12 has two guide plates 15, 16 which run parallel to one another and between which the material web is guided.
  • semicircular pressing elements 18, 19 are provided in the region of the stacking and folding edges, which are fastened on a shaft 20, 21 rotating synchronously with the oscillating drive of the oscillating guide, not shown. These pressing elements 18, 19 alternately hold the folded edges 22, 23 down on the stack when the material web is folded, so that high working speeds are possible when the material web is folded alternately, ie in a zigzag fashion.
  • the movement control of the folded tray on the table 14 is supported at the beginning of the stack formation by one of the blowing nozzles 24, 25, depending on the direction in which the folding begins.
  • a lifting drive 25 automatically exhausts the lifting table 14.
  • the formed stack 1 is separated from the subsequent material web 2 on the basis of a material web 2 attached, for example printed or perforated marking, which is detected by a signal generator 27 provided on the web guide.
  • the signal then emitted by the signal generator triggers a sequence of preprogrammed operations.
  • the drive 3 for the conveying element 4 and the conveying roller 8 as well as the drive for the vibrating guide 12 and the pressing elements 18, 19 are switched off, but with a delay until the pre-folded perforation line on which the separation is to take place has passed the terminal strip 10 .
  • a thrust drive 28 then moves a conveyor roller 30 driving in the opposite direction into contact with the material web, in the contact area of the conveyor roller 8, so that the material web is moved back.
  • the intended severing point or transverse perforation line has passed through the terminal strip 10 again, this comes into effect through the pressing movement of the opposing terminal strip 11 and holds the material web 2 in place so that it breaks at the intended point 32.
  • 3 shows the moment shortly after the separation with the contact position of the conveyor roller 30 and the terminal strip 11.
  • the lifting table is designed as a conveyor table in that it has endless belts guided over rollers 34, 35.
  • One of the rollers carries a gearwheel 36 which, after the lifting table has been lowered, also to the level of a stationary second conveyor belt 37 a driven second gear 38 engages so that the conveyor belt is transported and the stack is correspondingly transported away from the lifting table 14.
  • a second signal transmitter 40 arranged at the beginning of the second conveyor track signals the transfer of the stack 1 to the second conveyor belt to the drive control of the lifting table 14 in order to bring it back into its upper starting position. After this position has been reached, the conveying of the material web and the device 12, 18, 19, 24, 25 for stack formation are put into operation again until a new marking passes the signal generator 27 and the sequence described is repeated.
  • the upstream folding device 6 does not have to be switched off during the stoppage of the conveyance of the material strip 2, since a stack is also formed there.
  • This intermediate stack 7 acts as a buffer for the continuous refeeding of the material web starting from a supply roll, not shown. Since the folding device 6 forms the stack from the bottom up and is placed on a table 42, the relatively large space above the table 42 provides a large buffer volume. After the conveyor is switched on again, the intermediate stack, which has grown in the meantime, is reduced again by an initially increased working speed of the conveyor and the formation of the stack 1. It goes without saying that suitable control devices are available for this purpose, which also control the height of the intermediate stack.
  • the workflow can also be buffered by another buffer Type, for example, be made according to the representation in Fig. 2.
  • This intermediate storage 44 has two rows 45, 46 of deflecting rollers over which the material web is guided in a meandering manner in the form of successive loops.
  • the upper row 45 of deflecting rollers has fixed axes of rotation, while the deflecting rollers of the lower row 46 are mounted in a frame 48 which is mounted on vertical guides 49, 50, for example under their own weight, depending on the required length of the material web 2 stored in the intermediate store 44, is movable up and down.
  • the state with a large stored length of the material strip 2 is shown by chain lines 51.
  • the material web is stopped at a precisely predetermined location before the severing, so that the perforation line at which the severing is to take place comes to a standstill between the pair of strips 10, 11 and the pair of rollers 8, 9, the pair of strips can be closed immediately to hold the material web in a jammed position, and the brief return transport by means of the then pressed-on conveyor roller immediately causes the separation at this perforation line.

Landscapes

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

Abstract

Durch das Verfahren werden einzelne Stapel (1) aus zickzackförmigem, gefaltetem und gefalztem Material von einer kontinuierlich folgenden Materialbahn (2) an vorgegebener Stelle abgetrennt, indem zwischen einem auch entgegen der Förderrichtung antreibbaren Walzenpaar (8, 9, 30) und einem Klemmleistenpaar (10,11) in der Materialbahn (2) eine die Abtrennung bewirkende Zugkraft erzeugt wird, nachdem eine durch einen Signalgeber (27) signalisierte Solltrennstelle in der Materialbahn diese Zwischenposition erreicht hat. Das eine feststehende (10) und andrückbare (11) Klemmleiste aufweisende Klemmleistenpaar befindet sich in Förderrichtung unmittelbar vor einer die Stapelbildung bewirkenden Schwingführung (12). Die Stapelbildung erfolgt auf einem sich absenkenden Hubtisch (14). Nach Abtrennung des Stapels (1) wird die Förderung im Bereich des stapelbildenden Teils der Vorrichtung für die Uebergabe auf eine zweite Förderbahn (37) unterbrochen, währenddessen die kontinuierliche Nachförderung der Materialbahn (2) in einen als Puffer wirkenden Zwischenstapel (7) hinein erfolgt, der anschliessend durch beschleunigte Arbeitsweise wieder abgebaut wird.The method separates individual stacks (1) made of zigzag-shaped, folded and folded material from a continuously following material web (2) at a predetermined location by placing a pair of rollers (8, 9, 30) that can also be driven counter to the conveying direction and a pair of clamping strips (10 , 11) a tensile force causing the separation is generated in the material web (2) after a predetermined separation point in the material web signaled by a signal transmitter (27) has reached this intermediate position. The pair of terminal strips, which has a fixed (10) and press-on (11) terminal strip, is located in the conveying direction immediately in front of an oscillating guide (12) which forms the stack. The stack is formed on a lowering lifting table (14). After the stack (1) has been separated, the conveying in the area of the stack-forming part of the device for transfer to a second conveying path (37) is interrupted, during which the continuous conveying of the material web (2) into an intermediate stack (7) acting as a buffer takes place. which is then broken down again by accelerated working methods.

Description

Die Erfindung betrifft ein Verfahren sowie eine Vorrichtung zum Herstellen einzelner, aus einer zickzackförmig gefalteten Materialbahn bestehender Stapel gemäss Oberbegriff des Anspruches 1, bzw. des Anspruches 5.The invention relates to a method and a device for producing individual stacks consisting of a zigzag folded material web according to the preamble of claim 1 and claim 5.

Aus der EP-OS 0 057 463 ist nun ein Verfahren und eine Vorrichtung dieser Art bekannt, bei dem, bzw. bei der die Materialbahn beidseits der Solltrennlinie zwischen zwei Rollenpaaren festgeklemmt wird. Das dem Stapel näher liegende Rollenpaar wird dann in Förderrichtung der Materialbahn bewegt, was ein Reissen der Materialbahn entlang der zwischen den Rollenpaaren liegenden Solltrennlinie zur Folge hat. Dabei wird der vom bewegten Rollenpaar erfasste letzte Abschnitt der zu einem Stapel gefalteteten Materialbahn gegenüber dem Rest der Materialbahn beschleunigt.From EP-OS 0 057 463 a method and a device of this type is now known, in which, or in which the material web is clamped between two pairs of rollers on both sides of the predetermined dividing line. The pair of rollers closer to the stack is then moved in the conveying direction of the material web, which results in the material web tearing along the desired separating line lying between the roller pairs. The last section of the material web folded into a stack, which is captured by the moving pair of rollers, is accelerated in relation to the rest of the material web.

Bei dieser bekannten Lösung ist nun eine konstruktiv verhältnismässig aufwendige Trennvorrichtung erforderlich, die von der Zuführeinrichtung vollständig getrennt ist. Zudem erfolgt das Trennen währenddem die Materialbahn vorgeschoben wird. Dies setzt einer Erhöhung der Arbeitsgeschwindigkeit gewisse Grenzen.In this known solution, a structurally relatively complex separation device is now required, which is completely separated from the feed device. In addition, the separation takes place while the material web is being advanced. This places certain limits on increasing the working speed.

Aus der DE-OS 28 51 894 ist eine Trennvorrichtung bekannt, bei der benachbart zueinander zwei Förderwalzenpaare angeordnet sind, die zum Vorschieben der Materialbahn gleichsinnig und mit gleicher Geschwindigkeit angetrieben werden. Zum Trennen der Materialbahn entlang einer Perforationslinie wird nun das in Förderrichtung gesehen hintere Walzenpaar stillgesetzt, während das andere Walzenpaar die Materialbahn weiterfördert. Wegen der Doppelfunktion des einen Walzenpaares (Vorschieben und Festklemmen) ist diese Vorrichtung für Anwendungen, bei denen die Materialbahn mit grosser Geschwindigkeit bewegt wird und häufig eine Trennung zu erfolgen hat, wegen des dabei erforderlichen häufigen schnellen Beschleunigens des besagten einen Walzenpaares nach jedem Trennvorgang, weniger geeignet. Zudem muss dieses eine Walzenpaar auch während des Förderns einen gewissen Druck auf die Materialbahn ausüben, um diese beim Stillsetzen auch genügend stark festklemmen zu können. Dies ist im Falle von dünnen Materialbahnen mit Schwierigkeiten verbunden und kann zu Beschädigungen der Materialbahn führen.From DE-OS 28 51 894 a separating device is known in which two conveyor roller pairs are arranged adjacent to one another and are driven in the same direction and at the same speed for advancing the material web. For separating the material web along In a perforation line, the rear pair of rollers seen in the conveying direction is now stopped, while the other pair of rollers continues to convey the material web. Because of the double function of the one pair of rollers (advancing and clamping), this device is less for applications in which the material web is moved at high speed and often has to be separated, because of the frequent rapid acceleration of said one pair of rollers after each cutting operation suitable. In addition, this one pair of rollers must also exert a certain pressure on the material web during conveying in order to be able to clamp it sufficiently strongly when it is stopped. In the case of thin material webs, this is difficult and can lead to damage to the material web.

Der vorliegenden Erfindung liegt nun die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung zu schaffen, das, bzw. die mit konstruktiv einfachen Mitteln auch bei hoher Arbeitsgeschwindigkeit neben einem sicheren Trennen der Materialbahn entlang von Solltrennlinien auch eine einwandfreie Stapelbildung ermöglicht.The present invention is based on the object of creating a method and a device which, in addition to a safe separation of the material web along predetermined separation lines, also enables problem-free stack formation with structurally simple means even at high working speeds.

Diese Aufgabe wird erfindungsgemäss durch die Merkmale des kennzeichnenden Teiles des Anspruches 1, bzw. des Anspruches 5 gelöst.This object is achieved according to the invention by the features of the characterizing part of claim 1 and claim 5.

Zum Trennen der Materialbahn wird der letzte Abschnitt des zu stapelnden Teils der Materialbahn durch die Festhalteanordnung festgehalten, während die Ma-terialbahn zurückbewegt wird. Die Trennstelle ändert somit während des Trennens ihre Lage nicht, das heisst die Hinterkante des zu stapelnden Materialbahnteils hat eine genau festgelegte Position, was das nachfolgende gesteuerte Zickzackfalten und Ablegen auf den Stapel erleichtert. Während des Trennens der Materialbahn wird nach Fertigstellung eines Stapels der Stapelbildevorgang so lange unterbrochen, bis der fertige Stapel weggeführt ist und die Stapelbildeeinrichtung wieder zum Bilden eines neuen Stapels bereit ist. Um die Zufuhr der Materialbahn trotz dieses Unterbruches in der Stapelbildung nicht unterbrechen zu müssen, wird vorzugsweise ein Teil der kontinuierlich anfallenden Materialbahn in einem Pufferspeicher zwischengespeichert, der nach erfolgter Trennung der Materialbahn durch eine kurzzeitige Erhöhung der Arbeitsgeschwindigkeit wieder auf seine Sollhöhe abgebaut werden kann. Für das Zurückbewegen der Materialbahn beim Trennvorgang können Elemente der Vorschubeinrichtung für die Materialbahn Verwendung finden, was die Konstruktion vereinfacht.For separating the material web of the last section is held to be stacked the portion of the web of material through the holding arrangement, while the M a-terialbahn is moved back. The separation point does not change its position during the separation, that is the rear edge of the material web part to be stacked has a precisely defined position, which facilitates the subsequent controlled zigzag folding and placing on the stack. During the cutting of the material web, once a stack has been completed, the stack forming process is interrupted until the finished stack has been carried away and the stack forming device is again ready to form a new stack. In order not to have to interrupt the supply of the material web despite this interruption in the stack formation, a part of the continuously occurring material web is preferably temporarily stored in a buffer memory which, after the material web has been separated, can be reduced to its desired height again by briefly increasing the working speed. For moving the material web back during the separation process, elements of the feed device for the material web can be used, which simplifies the construction.

Im folgenden wird die Erfindung anhand der Zeichnungen näher beschrieben. Es zeigt:

  • Fig. 1 eine schematische Darstellung einer Seitenansicht einer Vorrichtung zur Durchführung des Verfahrens;
  • Fig. 2 eine schematische Darstellung eines für die Vorrichtung der Fig. 1 geeigneten Zwischenspeichers;
  • Fig. 3 einen Teil der Vorrichtung nach Fig. 1 in einer Arbeitsphase, kurz nach Trennung der Materialbahn; und
  • Fig. 4 einen Teil der Vorrichtung nach Fig. 1 zur Zeit der Unterbrechung der Stapelbildung und des Abtransportes des abgetrennten Stapels.
The invention is described in more detail below with reference to the drawings. It shows:
  • Figure 1 is a schematic representation of a side view of an apparatus for performing the method.
  • FIG. 2 shows a schematic representation of a buffer suitable for the device of FIG. 1;
  • F ig. 3 shows part of the device according to FIG. 1 in a working phase, shortly after separation of the material web; and
  • Fig. 4 shows a part of the device according to Fig. 1 at the time of the interruption of the stack formation and the removal of the separated stack.

Die Fig. 1 zeigt die Vorrichtung zur Durchführung des Verfahrens in kontinuierlicher Arbeitsweise während der Ausbildung eines Stapels 1 aus einer fortlaufend zugeführten Mterialbahn 2 durch zickzackförmiges Falten und Falzen. Die Materialbahn 2, z.B. aus Papier für Drucker von EDV-Anlagen, hat längs ihrer Ränder verlaufende Perforierungslinien, in die die Zähne eines durch den Motor 3 angetriebenen Förderelementes 4 eingreifen. Ausserdem hat die Materialbahn 2 in regelmässigen Abständen entsprechend der Breite des zu bildenden Stapels 1 querverlaufende Perforierungslinien, entlang denen die Falzung bei der Stapelbildung erfolgt und an denen der Materialbahn in einer vorgeschalteteten Falzeinrichtung 6 vorgefalzt worden ist. Durch die Vorfalzung entlang den querverlaufenden Perforierungslinien wird das Falten bei der Herstellung des Stapels 1 erleichtert und ausserdem die exakte und leichte Trennung der Materialbahn entlang einer solchen Perforierungslinie sichergestellt. Eine für die Verwendung in der erfindungsgemässen Vorrichtung geeignete Falzeinrichtung ist in der DE-OS 33 44 260 näher beschrieben.1 shows the device for carrying out the method in a continuous mode of operation during the formation of a stack 1 from a continuously supplied material web 2 by means of zigzag folding and folding. The material web 2, e.g. made of paper for printers of EDP systems, has perforation lines running along their edges, into which the teeth of a conveyor element 4 driven by the motor 3 engage. In addition, the material web 2 has, at regular intervals corresponding to the width of the stack 1 to be formed, perforation lines running transversely along which the folding takes place during stack formation and on which the material web has been pre-folded in an upstream folding device 6. The pre-folding along the transverse perforation lines makes folding easier during the manufacture of the stack 1 and also ensures the exact and easy separation of the material web along such a perforation line. A folding device suitable for use in the device according to the invention is described in more detail in DE-OS 33 44 260.

Durch das angetriebene Förderelement 4 wird die Materialbahn 2 von dem einen Puffer für den Arbeitsablauf bildenden Zwischenstapel 7 über eine Umlenkwalze 5 abgezogen und einer ebenfalls vom Antrieb 3 angetriebenen Förderwalze 8 zugeführt. An dieser erfolgt durch die Führung mittels mindestens einer mitlaufenden Andrückwalze 9 eine Umlenkung der Materialbahn 2 vertikal nach unten, an einer Klemmleiste 10 vorbei, zu einer Schwingführung 12, die durch ihre Schwingbewegung in an sich bekannter Weise, die Materialbahn zickzackförmig gefaltet auf dem Hubtisch 14 zur Bildung des Stapels 1 ablegt. Der genannten Klemmleiste 10, die feststehend ist, steht eine bewegliche Anklemmleiste 11 gegenüber, die durch einen gesteuerten Schubantrieb 13 gegen die feststehende Klemmleiste 10 drückbar ist, um die Materialbahn festhalten zu können. Die Schwingführung 12 hat zwei parallel zueinander verlaufende Führungsplatten 15, 16, zwischen denen die Materialbahn hindurchgeführt wird. Beidseitig zu dem herzustellenden Stapel 1 sind im Bereich der Stapel- und Falzkanten halbkreisförmige Andrückelemente 18, 19 vorgesehen, die auf einer synchron mit dem nicht dargestellten Schwingantrieb der Schwingführung sich drehenden Welle 20, 21 befestigt sind. Diese Andrückelemente 18, 19 halten wechselweise beim Falten der Materialbahn die Falzkanten 22, 23 auf dem Stapel nieder, so dass hohe Arbeitsgeschwindigkeiten beim wechselweisen, d.h. zickzackförmigen Falten der Materialbahn möglich sind. Die Bewegungssteuerung der gefalteten Ablage auf dem Tisch 14 wird zu Beginn der Stapelbildung durch eine der Blasdüsen 24, 25 unterstützt, je nachdem in welcher Richtung die Faltung beginnt.The driven conveyor element 4 removes the material web 2 from the intermediate stack 7, which forms a buffer for the workflow, via a deflection roller 5 pulled and fed a conveyor roller 8 also driven by the drive 3. The material web 2 is deflected vertically downwards by a guide by means of at least one rotating pressure roller 9, past a clamping strip 10, to an oscillating guide 12 which, by its oscillating movement, folds the material web in a known manner on the lifting table 14 in a manner known per se to form the stack 1. The mentioned terminal strip 10, which is fixed, is opposite a movable terminal strip 11, which can be pressed against the fixed terminal strip 10 by a controlled linear actuator 13 in order to be able to hold the material web. The vibration guide 12 has two guide plates 15, 16 which run parallel to one another and between which the material web is guided. On both sides of the stack 1 to be produced, semicircular pressing elements 18, 19 are provided in the region of the stacking and folding edges, which are fastened on a shaft 20, 21 rotating synchronously with the oscillating drive of the oscillating guide, not shown. These pressing elements 18, 19 alternately hold the folded edges 22, 23 down on the stack when the material web is folded, so that high working speeds are possible when the material web is folded alternately, ie in a zigzag fashion. The movement control of the folded tray on the table 14 is supported at the beginning of the stack formation by one of the blowing nozzles 24, 25, depending on the direction in which the folding begins.

Entsprechend der Zunahme der Höhe des Stapels 1 ikt ein Hubantrieb 25 den Hubtisch 14 automatisch euert ab. Die Abtrennung des gebildeten Stapels 1 von achfolgenden Materialbahn 2 erfolgt aufgrund einer Materialbahn 2 angebrachten, z.B. gedruckten oder gelochten Markierung, die durch einen an der Bahnführung vorgesehenen Signalgeber 27 erfasst wird. Das dann vom Signalgeber abgegebene Signal löst eine Folge von vorprogrammierten Arbeitsgängen aus. Zuerst werden der Antrieb 3 für das Förderelement 4 und die Förderwalze 8 sowie der Antrieb für die Schwingführung 12 und die Andrückelemente 18, 19 abgeschaltet, jedoch mit einer Verzögerung, bis die vorgefalzte Perforierungslinie, an der die Abtrennung erfolgen soll, die Klemmleiste 10 passiert hat. Anschliessend bewegt ein Schubantrieb 28 eine in entgegengesetzter Richtung antreibende Förderwalze 30 in Kontakt mit der Materialbahn, im Kontaktbereich der Förderwalze 8, so dass die Materialbahn zurückbewegt wird. Nachdem dabei die vorgesehene Abtrennstelle, bzw. querverlaufende Perforierungslinie die Klemmleiste 10 wieder passiert hat, kommt diese durch die Andrückbewegung der gegenüberstehenden Anklemmleiste 11 zur Wirkung und hält die Materialbahn 2 fest, so dass sie an der vorgesehenen Stelle 32 reisst. Fig. 3 zeigt den Moment kurz nach der Abtrennung mit Kontaktposition der Förderwalze 30 und der Anklemmleiste 11.In accordance with the increase in the height of the stack 1, a lifting drive 25 automatically exhausts the lifting table 14. The formed stack 1 is separated from the subsequent material web 2 on the basis of a material web 2 attached, for example printed or perforated marking, which is detected by a signal generator 27 provided on the web guide. The signal then emitted by the signal generator triggers a sequence of preprogrammed operations. First, the drive 3 for the conveying element 4 and the conveying roller 8 as well as the drive for the vibrating guide 12 and the pressing elements 18, 19 are switched off, but with a delay until the pre-folded perforation line on which the separation is to take place has passed the terminal strip 10 . A thrust drive 28 then moves a conveyor roller 30 driving in the opposite direction into contact with the material web, in the contact area of the conveyor roller 8, so that the material web is moved back. After the intended severing point or transverse perforation line has passed through the terminal strip 10 again, this comes into effect through the pressing movement of the opposing terminal strip 11 and holds the material web 2 in place so that it breaks at the intended point 32. 3 shows the moment shortly after the separation with the contact position of the conveyor roller 30 and the terminal strip 11.

Anschliessend werden diese Kontaktpositionen wieder aufgehoben und die Materialbahn wieder vorwärts transportiert, bis der neue Bahnanfanc, bzw. das erste Blatt für einen neuen Stapel etwas über die Schwingführung 12 vorsteht, in diesem Moment stoppt der Transport erneut, um durch Absenken des Hubtisches 14 den abgetrennten Stapel abzutransportieren. Der Hubtisch ist als Fördertisch ausgebildet, indem er über Walzen 34, 35 geführte Endlosbänder aufweist. Eine der Walzen trägt ein Zahnrad 36, das nach Absenken des Hubtisches bis auf die Höhe eines stationär angeordneten zweiten Förderbandes 37 mit einem angetriebenen zweiten Zahnrad 38 in Eingriff gelangt, so dass das Förderband transportiert und entsprechend der Stapel von dem Hubtisch 14 wegtransportiert wird. Ein am Anfang der zweiten Förderbahn angeordneter zweiter Signalgeber 40 signalisiert die Uebergabe des Stapels 1 an das zweite Förderband an die Antriebssteuerung des Hubtisches 14, um diesen wieder in seine obere Ausgangsposition zu bringen. Nach Erreichen dieser Position wird die Förderung der Materialbahn und die Einrichtung 12, 18, 19, 24, 25 zur Stapelbildung wieder in Betrieb gesetzt, bis eine neue Markierung den Signalgeber 27 passiert und der beschriebene Ablauf sich wiederholt.These contact positions are then lifted again and the material web is again transported forward until the new web start or the first sheet for a new stack protrudes slightly above the vibration guide 12, at which point the transport stops again in order to lower the lift table 14 by lowering it Remove stack. The lifting table is designed as a conveyor table in that it has endless belts guided over rollers 34, 35. One of the rollers carries a gearwheel 36 which, after the lifting table has been lowered, also to the level of a stationary second conveyor belt 37 a driven second gear 38 engages so that the conveyor belt is transported and the stack is correspondingly transported away from the lifting table 14. A second signal transmitter 40 arranged at the beginning of the second conveyor track signals the transfer of the stack 1 to the second conveyor belt to the drive control of the lifting table 14 in order to bring it back into its upper starting position. After this position has been reached, the conveying of the material web and the device 12, 18, 19, 24, 25 for stack formation are put into operation again until a new marking passes the signal generator 27 and the sequence described is repeated.

Die vorgeschaltete Falzeinrichtung 6 muss während des Stillstandes der Förderung des Materialbandes 2 nicht abgeschaltet werden, da an ihr ebenfalls eine Stapelbildung erfolgt. Dieser Zwischenstapel 7 wirkt als Puffer für die kontinuierliche Nachförderung der Materialbahn ausgehend von einer nicht dargestellten Vorratsrolle. Da die Falzeinrichtung 6 den Stapel von unten nach oben bildet und dieser auf einem Tisch 42 abgelegt wird, ist durch den verhältnismässigen grossen Raum oberhalb des Tisches 42 ein grosses Puffervolumen vorhanden. Nach dem erneuten Einschalten der Förderung wird der inzwischen angewachsene Zwischenstapel durch eine anfangs erhöhte Arbeitsgeschwindigkeit der Förderung und der Bildung des Stapels 1 wieder abgebaut. Es versteht sich, dass hierfür geeignete Steuereinrichtungen vorhanden sind, die auch die Höhe des Zwischenstapels kontrollieren.The upstream folding device 6 does not have to be switched off during the stoppage of the conveyance of the material strip 2, since a stack is also formed there. This intermediate stack 7 acts as a buffer for the continuous refeeding of the material web starting from a supply roll, not shown. Since the folding device 6 forms the stack from the bottom up and is placed on a table 42, the relatively large space above the table 42 provides a large buffer volume. After the conveyor is switched on again, the intermediate stack, which has grown in the meantime, is reduced again by an initially increased working speed of the conveyor and the formation of the stack 1. It goes without saying that suitable control devices are available for this purpose, which also control the height of the intermediate stack.

Anstatt durch Stapelbildung kann eine Pufferung des Arbeitsablaufs auch durch einen Zwischenspeicher anderer Art, z.B. entsprechend der Darstellung in Fig. 2 vorgenommen werden. Dieser Zwischenspeicher 44 hat zwei Reihen 45, 46 von Umlenkwalzen über die die Materialbahn in Form von aufeinanderfolgenden Schlaufen mäanderartig geführt ist. Die obere Reihe 45 von Umlenkwalzen hat feststehend angeordnete Drehachsen, während die Umlenkwalzen der unteren Reihe 46 in einem Rahmen 48 gelagert sind, der auf Vertikalführungen 49, 50, z.B. unter Eigengewicht, je nach der erforderlichen, im Zwischenspeicher 44 gespeicherten Länge der Materialbahn 2, auf und abwärts beweglich ist. Durch Strichpunktlinien 51 ist der Zustand mit grosser gespeicherter Länge des Materialbandes 2 dargestellt. Bei Verwendung dieses Zwischenspeichers 44 erfolgt die Vorfalzung an den querverlaufenden Perforierungslinien des Materialbandes in einer vorgeschalteten Einrichtung, oder es wird von einem vorgefalzten Materialband in Rollen- oder Stapelform ausgegangen.Instead of stacking, the workflow can also be buffered by another buffer Type, for example, be made according to the representation in Fig. 2. This intermediate storage 44 has two rows 45, 46 of deflecting rollers over which the material web is guided in a meandering manner in the form of successive loops. The upper row 45 of deflecting rollers has fixed axes of rotation, while the deflecting rollers of the lower row 46 are mounted in a frame 48 which is mounted on vertical guides 49, 50, for example under their own weight, depending on the required length of the material web 2 stored in the intermediate store 44, is movable up and down. The state with a large stored length of the material strip 2 is shown by chain lines 51. When this buffer 44 is used, the pre-folding takes place on the transverse perforation lines of the material strip in an upstream device, or a pre-folded material strip in roll or stack form is assumed.

Falls durch eine entsprechende Steuerung das Anhalten der Materialbahn vor dem Abtrennen an genau vorbestimmter Stelle erfolgt, so dass die Perforierungslinie, an der die Abtrennung erfolgen soll, zwischen dem Leistenpaar 10, 11 und dem Walzenpaar 8, 9 zum Stillstand kommt, so kann das Leistenpaar sofort zum klemmenden Halten der Materialbahn geschlossen werden, und der kurzzeitige Rücktransport mittels der dann angedrückten Förderwalze bewirkt sofort die Abtrennung an dieser Perforierungslinie.If, by means of an appropriate control, the material web is stopped at a precisely predetermined location before the severing, so that the perforation line at which the severing is to take place comes to a standstill between the pair of strips 10, 11 and the pair of rollers 8, 9, the pair of strips can be closed immediately to hold the material web in a jammed position, and the brief return transport by means of the then pressed-on conveyor roller immediately causes the separation at this perforation line.

Claims (13)

1. Verfahren zum Herstellen einzelner, aus einer zickzackförmig gefalteten Materialbahn (2) bestehender Stapel (1) ausgehend von einer kontinuierlich zugeführten und mit Trennlinien versehenen Materialbahn (2), bei dem vor dem Falten und Ablegen der Materialbahn (2) zu einem Stapel (1) ein fertig hergestellter Stapel (1) durch Erzeugen einer Zugkraft in der auf einer Seite der Sollhemmlinie (32) festgehaltenen Materialbahn (1) entlang einer Solltrennlinie (32) von der Materialbahn (1) abgetrennt wird und der fertige Stapel (1) weggeführt wird, dadurch gekennzeichnet dass zum Abtrennen des fertigen Stapels (1) von der Materialbahn (2) letztere an einer Stelle (10, 13), die bezüglich der Solltrennlinie (32) in Richtung gegen den Stapel (1) liegt, festgehalten wird und kurzzeitig entgegen der normalen Förderrichtung (A) zurückbewegt wird, und dass die Stapelbildung während dem Abtransport des abgetrennten Stapels (1) unterbrochen wird.1. A method for producing individual stacks (1) consisting of a zigzag folded material web (2) starting from a continuously supplied and provided with dividing lines material web (2), in which prior to folding and depositing the material web (2) into a stack ( 1) a finished stack (1) is separated from the material web (1) by generating a tensile force in the material web (1) held on one side of the predetermined inhibition line (32) along a predetermined separation line (32) and the finished stack (1) is led away characterized in that for separating the finished stack (1) from the material web (2) the latter is held at a point (10, 13) which lies in relation to the target separating line (32) in the direction towards the stack (1) and briefly is moved back against the normal conveying direction (A), and that the stack formation is interrupted during the removal of the separated stack (1). 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Materialbahn (2) von oben einem Zwischenstapel (7) entnommen wird, der von unten durch zickzackförmiges Falten der kontinuierlich zugeführten Materialbahn (2) gebildet wird.2. The method according to claim 1, characterized in that the material web (2) is removed from above an intermediate stack (7) which is formed from below by zigzag folding of the continuously supplied material web (2). 3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass der während des Abtrennens und Wegführens eines fertigen Stapels (1) wachsende Zwischenstapel (7) durch vorübergehend beschleunigtes Bilden eines neuen Stapels (1) abgebaut wird.3. The method according to claim 2, characterized in that during the separation and removal of a finished stack (1) growing intermediate stack (7) by in front accelerated formation of a new stack (1) is reduced. 4. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Materialbahn einem Zwischenspeicher (44) entnommen wird, in dem sie schlaufenförmig umgelenkt wird, wobei die Zwischenspeicherung durch Vergrösserung von mindestens einer Materialbahnschlaufe erfolgt.4. The method according to claim 1, characterized in that the material web is removed from an intermediate store (44) in which it is deflected in the form of a loop, the intermediate storage being carried out by enlarging at least one material web loop. 5. Vorrichtung zum Herstellen einzelner, aus einer zickzackförmig gefalteten Materialbahn (2) bestehender Stapel (l), ausgehend von einer kontinuierlich zugeführten und mit Trennlinien versehenen Materialbahn (2), mit einer Zuführeinrichtung (4, 8, 9) zum Zuführen der Materialbahn (2) zu einer Stapelbildeeinrichtung (12, 18, 19, 14) zum zickzackförmigen Falten und Ablegen der Materialbahn (2) zu einem Stapel (1), einer Wegführeinrichtung (36-38) zum Abtransportieren der fertigen Stapel (1) und einer eine ein- und ausschaltbare Festhalteanordnung (10, 11) für die Materialbahn (2) aufweisenden Trenneinrichtung (8, 30, 10, 11) zum Abtrennen des fertig hergestellten Stapels (1) von der Materialbahn (2) entlang einer Solltrennlinie (32) durch Festhalten der Materialbahn (2) auf einer Seite der Solltrennlinie (32) und Erzeugen einer Zugkraft in der Materialbahn (2), dadurch gekennzeichnet dass die Trenneinrichtung (8, 30, 10, 11) eine ein- und ausschaltbare Fördereinrichtung (8, 30) zum Bewegen der Materialbahn (2) entgegen deren normalen Förderrichtung (A) aufweist, die in der normalen Förderrichtung (A) der Materialbahn (2) gesehen vor der Festhalteanordnung (10, 11) angeordnet ist.5. Device for producing individual stacks (l) consisting of a zigzag folded material web (2), starting from a continuously fed and provided with dividing lines material web (2), with a feed device (4, 8, 9) for feeding the material web ( 2) to a stack forming device (12, 18, 19, 14) for zigzag folding and depositing the material web (2) to a stack (1), a removal device (36-38) for transporting the finished stack (1) and one - And switchable holding arrangement (10, 11) for the material web (2) having separating device (8, 30, 10, 11) for separating the finished stack (1) from the material web (2) along a predetermined separation line (32) by holding the Material web (2) on one side of the target separating line (32) and generating a tensile force in the material web (2), characterized in that the separating device (8, 30, 10, 11) has a conveyor device (8, 30) that can be switched on and off for moving gene of the material web (2) opposite to its normal conveying direction (A), which is arranged in the normal conveying direction (A) of the material web (2) in front of the retaining arrangement (10, 11). 6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass die Fördereinrichtung zwei die Materialbahn (2) zwischen sich aufnehmende drehbare Förderorgane (8, 30) aufweist, von denen das eine Förderorgan (8) mittels eines Antriebes (3) in entgegengesetzten Richtungen antreibbar ist.6. The device according to claim 5, characterized in that the conveying device two the material web (2) has rotating conveying elements (8, 30) between them, of which one conveying element (8) can be driven in opposite directions by means of a drive (3). 7. Vorrichtung nach Anspruch 5, gekennzeichnet, durch eine, einen die Materialbahn (2) abtastenden Signalgeber (7) aufweisende Steuereinrichtung zum Plazieren der Solltrennlinie (32) zwischen der Fördereinrichtung (8, 30) und der Festhalteanordnung (10, 11).7. The device according to claim 5, characterized by a, the material web (2) scanning signal transmitter (7) having control device for placing the target dividing line (32) between the conveyor (8, 30) and the retaining arrangement (10, 11). 8.. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass die Trenneinrichtung (8, 30, 10, 11) vor der eine Schwingführung (12) aufweisenden Stapelbildeeinrichtung (12, 18, 19, 14) angeordnet ist.8 .. Device according to claim 5, characterized in that the separating device (8, 30, 10, 11) is arranged in front of the stacking device (12, 18, 19, 14) having an oscillating guide (12). 9. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Stapelbildeeinrichtung 12, 18, 19, 14) während des Abtransportes des fertigen Stapels (1) stillsetzbar ist.9. The device according to claim 1, characterized in that the stack forming device 12, 18, 19, 14) can be stopped during the removal of the finished stack (1). 10. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass ein den Stapel (1) aufnehmender Hubtisch (14) über Walzen (34, 35) geführte Förderbänder aufweist, die in unterer Endstellung des Hubtisches (14) in Antriebsverbindung mit einem Antrieb (38) gelangen, wobei der Hubtisch (14) in der unteren Endstellung an einen Förderer (37) angrenzt.10. The device according to claim 1, characterized in that a lifting table (14) receiving the stack (1) has rollers (34, 35) guided conveyor belts which are in the lower end position of the lifting table (14) in drive connection with a drive (38). reach, the lifting table (14) in the lower end position adjacent to a conveyor (37). ll. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass an der Uebergabestelle zwischen dem Hubtisch (14) und dem Förderer (37) ein Signalgeber (40) für die Rückbewegung des Hubtisches (14) und die Ingangsetzung der Stapelbildung vorhanden ist.ll. Device according to claim 10, characterized in that at the transfer point between the lifting table (14) and the conveyor (37) there is a signal transmitter (40) for the return movement of the lifting table (14) and the start of the stack formation. 12. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass in Förderrichtung (A) der Materialbahn (2) gesehen vor der Zuführeinrichtung (4, 8, 9) eine Einrichtung (6) zum Zwischenspeichern eines Teils der kontinuierlich anfallenden Materialbahn (1) in Form eines von oben abbaubaren Zwischenstapels (7) angeordnet ist, der von unten durch zickzackförmiges Falten der Materialbahn (2) gebildet wird.12. The device according to claim 1, characterized in that seen in the conveying direction (A) of the material web (2) in front of the feed device (4, 8, 9) a device (6) for temporarily storing part of the continuously occurring material web (1) in the form an intermediate stack (7) which can be dismantled is arranged, which is formed from below by zigzag folding of the material web (2). 13. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass in Förderrichtung (A) der Materialbahn (2) gesehen vor der Zuführeinrichtung (4, 8, 9) eine Einrichtung (44) zum Zwischenspeichern eines Teils der kontinuierlich anfallenden Materialbahn (1) vorgesehen ist, die mehrere Umlenkwalzen (45, 46) für die schlaufenförmige Führung der Materialbahn (2) aufweist, wobei der Abstand zwischen mindestens zwei Umlenkwalzen (45, 46) veränderbar ist.13. The apparatus according to claim 1, characterized in that in the conveying direction (A) of the material web (2) seen in front of the feed device (4, 8, 9) a device (44) for temporarily storing part of the continuously occurring material web (1) is provided which has a plurality of deflection rollers (45, 46) for the loop-shaped guidance of the material web (2), the distance between at least two deflection rollers (45, 46) being variable.
EP85116319A 1985-01-11 1985-12-20 Method and device for the production of single stacks consisting of a fan folded web Expired EP0187344B1 (en)

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DE3500766 1985-01-11
DE3500766A DE3500766C2 (en) 1985-01-11 1985-01-11 Device for the production of individual stacks consisting of a material web folded in a zigzag shape

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EP0187344A1 true EP0187344A1 (en) 1986-07-16
EP0187344B1 EP0187344B1 (en) 1987-11-04

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ES8706563A1 (en) 1987-07-01
DE3500766A1 (en) 1986-07-17
DE3500766C2 (en) 1986-11-13
EP0187344B1 (en) 1987-11-04
JPS61162461A (en) 1986-07-23
US4730762A (en) 1988-03-15
ES549974A0 (en) 1987-07-01
JPH0641343B2 (en) 1994-06-01

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