EP0080519A1 - Method and machine for folding posters - Google Patents

Method and machine for folding posters Download PDF

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Publication number
EP0080519A1
EP0080519A1 EP81109910A EP81109910A EP0080519A1 EP 0080519 A1 EP0080519 A1 EP 0080519A1 EP 81109910 A EP81109910 A EP 81109910A EP 81109910 A EP81109910 A EP 81109910A EP 0080519 A1 EP0080519 A1 EP 0080519A1
Authority
EP
European Patent Office
Prior art keywords
tube
rollers
poster
posters
folding machine
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
EP81109910A
Other languages
German (de)
French (fr)
Other versions
EP0080519B1 (en
Inventor
Fritz Wössner
Ursel Wössner
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Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE8181109910T priority Critical patent/DE3175074D1/en
Priority to EP81109910A priority patent/EP0080519B1/en
Priority to ES517180A priority patent/ES517180A0/en
Publication of EP0080519A1 publication Critical patent/EP0080519A1/en
Application granted granted Critical
Publication of EP0080519B1 publication Critical patent/EP0080519B1/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
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/18—Oscillating or reciprocating blade folders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/2238—The web roll being driven by a winding mechanism of the nip or tangential drive type
    • 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
    • B65H29/006—Winding articles into rolls
    • B65H29/008—Winding single articles into single rolls
    • 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
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines

Definitions

  • the invention relates to a method for folding posters, with which posters of different lengths can be folded several times, and a folding machine for carrying it out.
  • Posters such as those stuck to poster pillars and billboards, often have large dimensions, which is why they are folded to a small size before being glued on. Folding the posters will make it much easier to stick them on. There is a requirement to fold the posters to a uniform size - for example, to a width of 14 cm. To achieve this, the posters, which can have lengths of 2 to 3 m, have to be folded several times. A machine with which such multiple folding could be carried out is not yet known.
  • the invention is based on the object of specifying a method for folding posters, with which even large posters can be narrowly folded up by a large number of folds.
  • the solution to this problem is a method of get the type mentioned in that the posters to be folded are first rolled up to a poster roll with a predetermined diameter; that the reeling process is ended so that the end of the poster on the outside of the poster takes up a certain adjustable position; and that the poster roll is then flattened, creating the fold.
  • the width of the pressed poster is also determined with the diameter of the poster roll.
  • the poster roll is pressed together with high pressure, creating sharp-edged folds.
  • the poster roll is aligned according to the invention before the flattening so that the outer end of the poster occupies a predetermined position.
  • the invention provides that the poster roll has a diameter of approximately 85 mm, the posters having an original length of over 2.80 m.
  • the invention provides a folding machine, which is characterized in that the folding machine has a retractor with an inner fixed tube and a plurality of drivable rollers surrounding the tube; that the rollers are arranged a short distance from the tube; and that for the paper feed a narrow area of the tube is not covered by rollers as an input area.
  • the posters to be folded are wound up from the rollers arranged at a certain distance from the tube to form a poster roller.
  • the posters are inserted between the rollers and the tube in the narrow area that is not covered by rollers.
  • the rotated rollers then guide the inserted poster around the tube.
  • the distance between the tube and the outer rollers can be about 1 cm, for example.
  • the arrangement of the rollers is preferably such that a plurality of drive axles surrounding the tube are provided, on each of which a row of rollers is fastened next to one another.
  • covers can be provided next to or between the rollers.
  • the preferred embodiment of the invention provides that the rollers of two adjacent drive axles are arranged so that they overlap laterally. As a result of this measure, the rollers interlock, so that the inserted posters have no possibility of getting out between the rollers.
  • rocker arms are rotatably mounted in the input area and distributed over the length of the tube, each of which presses the poster surrounding the tube resiliently in the direction of the tube and thereby slightly reduces the diameter of the poster roll at this point. This way you avoid that the poster roll braced against the outer driven rolls. Without the rocker arms, such bracing would occur in particular with poster rolls that have a large number of windings, for example 20 windings. Since the rocker arms are flexible or resilient, they are pushed outwards by the poster roller as the number of windings increases.
  • rocker arms are fastened on an axis lying outside their center of gravity and press on the poster roll due to their own weight.
  • the rocker arms can be brought into a position in which they do not influence the diameter of the poster roll. This measure results in a slight tensioning of small posters with respect to the rollers, which means that the poster that is wound up also comes to a standstill when the rollers are braked. If the poster roll would turn even further when the outer rolls were braked, this would have the disadvantage that the end of the poster would not assume a defined position.
  • the invention further provides that the tube is firmly connected at one end to the folding machine; that the other end is self-supporting; that a pull-off device is arranged at the cantilevered end, which pulls the poster roll axially from the tube.
  • the tube By the one-sided self-supporting design of the tube, it is possible to pull the rolled-up posters unhindered from the tube.
  • the tube could also be connected to the folding machine at both ends, one of these two connections would then have to be removed before the poster roll is removed. Such a solution would be considerably more complex than the solution according to the invention.
  • the take-off device has a pressure roller arranged in the tube and a transport roller located outside the tube; that the axes of these two rollers are perpendicular to the central axis of the tube; that the pressure roller can be pressed against the transport roller through a slot in the tube.
  • the transport roller can rotate continuously, the pressure roller for the pull-off process being pressed out of the interior of the tube in the direction of the transport roller.
  • the wound poster located between the transport roller and the pressure roller is pressed against the transport roller, whereby it is pulled off the tube in accordance with the direction of rotation of the transport roller.
  • the pressure roller can be actuated via a linkage running in the tube.
  • the linkage preferably protrudes from the other, non-self-supporting end of the tube, where it is actuated by a motor, for example by an eccentric.
  • the folding machine according to the invention is preferably designed so that a folding device is arranged in the extension of the free end of the tube has two conveyor belts converging at an acute angle, which flatten the respective removed poster roll; that there are pressure rollers behind the conveyor belts, which firmly press a continuous, compressed poster.
  • the poster rolls pulled off the tube go directly between the two conveyor belts. The entire folding process is therefore fully automated.
  • the pressure rollers ensure that sharp-edged folds are created.
  • Particularly wide poster sheets often have to be folded vertically in the middle after they have been folded several times in the longitudinal direction.
  • a folding knife is arranged behind the pressure rollers, which moves on a circular path by approximately 90 ° from an upper position above the folded poster to a horizontal position and thereby the posters coming from the pressure rollers in their Grabs the middle and pushes it through an approximately V-shaped funnel in the side view, so that an additional central fold is created.
  • This center fold runs perpendicular to the folds that were generated by the pressure rollers.
  • a further development of the invention which favors the rolling-up process provides that there is a roller in front of the input area which smoothes the posters before the rolling-up process; that the roller has circumferential recesses, engage in the guide rods of a guide device; and that under the roller there are counter pressure rollers which press the posters against the rotating roller at the bottom.
  • the guide device serves to securely place the posters in the gap between the inside Tube and outer rollers.
  • the guide rods of the guide device are arranged at a short distance from one another over the entire width of the input area. The posters are pushed into the reel-up by pressing on the rotating roller.
  • a further development of the invention provides that the roller can be brought up into a vertical position together with the guide device and with some of the rollers. This measure makes the space between the tube and the outer rollers accessible in the event of a fault. Such a malfunction can occur when badly damaged posters are fed to the reel-up.
  • the retractor 1 shown in Fig. 1 consists essentially of an inner tube 2 and a plurality of rollers 3 which surround the tube 2 at a short distance.
  • the rollers 3 are fastened to a plurality of drive axles 4 to 11 (FIG. 2) which are driven via associated gear wheels 12.
  • the gear wheels 12 engage in a pinion 13 which is firmly connected to a further gear wheel 14.
  • the gear 14 is driven by a toothed belt, not shown here.
  • rollers 3 are arranged on each of their drive axles 4 to 11 with a small distance from one another, so that gaps arise between the rollers located on a drive axle.
  • the rollers attached to an adjacent drive axle each engage in these gaps.
  • the tube 2 is so closely surrounded by rollers 3 that a poster inserted between rollers 3 and tube 2 cannot escape to the outside between the rollers.
  • the tube 2 is firmly connected at one end 15 to the folding machine. In the illustrated embodiment, this connection is made via two supports 16 which are screwed to the frame 17 of the folding machine. The supports 16 completely enclose the tube 2. The other end 18 of the tube 2 is self-supporting. As a result, a poster 19 (FIG. 2) wound on the inside of the rollers 3 can be pulled off the tube 2 at the self-supporting end 18.
  • a take-off device 20 which essentially consists of a transport roller 21 and a pressure roller 22.
  • a poster wrapped between the transport roller 21 and the pressure roller 22 around the tube 2 is now pulled off from the tube 2 in that the pressure roller 22 in the direction through a slot 23 provided in the tube 2 Transport roller 21 is pressed.
  • the pressure roller 22 is actuated via a linkage 24 which is led out of the tube 2 at the other end 15. If the linkage 24 is pressed against a spring 25 in the direction of arrow a, the pressure roller 22 assumes the position shown here. The pressure roller 22 has this position during the reeling process.
  • the linkage can be moved in the opposite direction of arrow a by the spring 25, whereby the pressure roller 22 is pressed through the slot 23 in the direction of the transport roller 21. Since the transport roller 21 rotates continuously in the specified direction, the poster roller located between the transport roller 21 and the pressure roller 22 is pulled off the tube 2 in the direction of the arrow b in this way.
  • the poster roll then passes between two superposed conveyor belts 26, 27 which are part of a folding device which is described in more detail with reference to FIG. 4.
  • F ig. 2 shows a simplified side view of the retractor 1.
  • the rollers 3 are arranged on several adjacent drive axles 4 to 11.
  • the tube 2 is completely surrounded by the rollers 3, except for a narrow area, which can be referred to as the input area 28.
  • the posters 19 are inserted between tube 2 and rollers 3. By rotating the rollers 3 in the specified direction, the poster 19 winds up to form a poster roller 29.
  • the posters 19 are each passed over a deflection roller 31 under the roller 30.
  • the roller 30 rotates continuously in the specified direction.
  • height-adjustable counter-pressure rollers 32 are arranged which, in their upper position, press the poster 19 against the roller 30, so that the poster 19 is moved in the indicated direction c.
  • the counter pressure rollers 32 are distributed over the length of the roller 30.
  • the folding machine according to the invention has a guide device 33 so that a perfect paper feed is ensured.
  • This essentially consists of guide rods 34 which engage in the recesses 35 provided on the roller 30.
  • the design of the roller 30 with its recesses 35 is illustrated in FIG. 3.
  • the guide rods 34 are designed such that their lower edge 36 is not arranged lower than the lowest point of the roller 30. So that the engagement of a guide rod 34 in the associated recess 35 is clear, the roller 30 in Fig. 2 is at the appropriate point shown broken up.
  • a rocker arm 37 which presses the poster roller 29 on one side in the direction of tube 2.
  • the rocker arm 37 is rotatably mounted on an axis 38 attached outside of its center of gravity, so that it passes through presses its own weight and the resulting torque against the poster roller 29.
  • a lever not shown here, the rocker arm 37 can be brought into a position in which it no longer influences the diameter of the poster roller 29.
  • the paper feed is preferably controlled via light barriers and stops, not shown here.
  • a light barrier can be arranged in the specified area d, which detects the presence of a poster 19.
  • a second light barrier can be provided in the area of the tube 2, which determines whether a poster roll 29 is in the reeling device.
  • the paper feed can now be controlled via a control so that paper feed into the reel-up device is prevented when a poster is already in the reel-up device.
  • the end of the reeling process can be controlled by means of a photocell arranged in area d.
  • the photocell recognizes the end of the poster of the poster inserted into the reel-up device and, after an adjustable time delay, causes the reel-up process to be stopped. This measure ensures that the poster end of the fully rolled up poster roll 29 is always in the same place at the end of the rolling up process.
  • rollers 3 In order to enable the rollers 3 to be braked as suddenly as possible, it is advantageous if they consist of a material with the lowest possible mass. For this reason, the rollers 3 are preferably made of plastic. The sudden braking of the rollers 3 is obtained in that the drive shaft acting on the toothed belt is first uncoupled from the drive motor and braked immediately thereafter.
  • the folding device 40 is shown.
  • the poster roller 29 is pressed flat together via two conveyor belts 26, 2 ' 7 tapering at an acute angle and passed under pressure between two pressure rollers 41, 42.
  • the high pressure that the two pressure rollers 41, 42 exert on the pre-folded poster creates sharp-edged folds.
  • a movable folding knife 43 is arranged behind the pressure rollers 41, 42. This folding knife 43 serves to fold the narrowly folded posters again in the middle. This center folding is necessary for posters with a large width.
  • the poster passed between the pressure rollers 41 and 42 is passed under the vertical folding knife 43 until half of the poster has passed the folding knife in the dashed position. While the poster is being transported continuously, the folding knife 43 moves downward in accordance with the direction of the arrow indicated. As a result, the poster is pressed into the V-shaped funnel 44 and passed between two folding rollers 45. The folding knife 43 moves with the speed like the center of the poster.
  • the bar 46, on which the folding knife 43 is fastened on the outside, moves in the direction of the arrow indicated by one increasing angular velocity. The required decreasing angular velocity is achieved by a control cam, not shown here.
  • Conveyor belts 48, 49 are provided, between which posters of smaller dimensions are transported to the exit, since these smaller posters do not have to be folded in the middle.

Abstract

1. Folding machine for folding posters having a rolling-up device (1) with a plurality of driveable rollers (3) and a drawing-off device (20), which in each case draws off one poster roll (29) in the inner space surrounded by rollers (3) and supplies same to a folding mechanism (40), characterized in that over the entire working width of the folding machine, rollers (3) surround a rigid tube (2) with a limited spacing, one end (15) of tube (2) is firmly anchored to the folding machine and is constructed in self-supporting manner at its other end (18), and that at the self-supporting end (18) is arranged the drawing-off device (20), which axially draws off the poster roll (29) from tube (2).

Description

Die Erfindung betrifft ein Verfahren zum Falten von Plakaten, mit dem Plakate unterschiedlicher Länge mehrfach gefaltet werden können, und eine Faltmaschine zu dessen Durchführung.The invention relates to a method for folding posters, with which posters of different lengths can be folded several times, and a folding machine for carrying it out.

Plakate, wie sie an Plakatsäulen und Plakatwänden angeklebt werden, haben häufig große Abmessungen, weshalb sie vor dem Ankleben auf ein kleines Maß zusammengefaltet werden. Durch das Zusammenfalten wird das Ankleben der Plakate erheblich erleichtert. Dabei besteht die Forderung, die Plakate auf ein einheitliches Maß - beispielsweise auf eine Breite von 14 cm - zusammenzufalten. Um dies zu erreichen, müssen die Plakate, die Längen von 2 bis 3 m haben können, mehrfach gefaltet werden. Eine Maschine, mit der eine solche Vielfachfaltung vorgenommen werden könnte, ist bisher nicht bekannt.Posters, such as those stuck to poster pillars and billboards, often have large dimensions, which is why they are folded to a small size before being glued on. Folding the posters will make it much easier to stick them on. There is a requirement to fold the posters to a uniform size - for example, to a width of 14 cm. To achieve this, the posters, which can have lengths of 2 to 3 m, have to be folded several times. A machine with which such multiple folding could be carried out is not yet known.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zum Falten von Plakaten anzugeben, mit dem auch große Plakate durch eine Vielzahl von Faltungen schmal zusammengefaltet werden können.The invention is based on the object of specifying a method for folding posters, with which even large posters can be narrowly folded up by a large number of folds.

Die Lösung dieser Aufgabe wird bei einem Verfahren der eingangs genannten Gattung dadurch erhalten, daß die zu faltenden Plakate zunächst zu einer Plakatrolle mit vorgegebenem Durchmesser aufgerollt werden; daß der Aufrollvorgang so beendet wird, daß das an der Plakatrolle außenliegende Plakatende eine bestimmte einstellbare Lage einnimmt; und daß die Plakatrolle dann flachgedrückt wird, wodurch die Faltung entsteht. Mit dem Durchmesser der Plakatrolle wird auch die Breite des zusammengedrückten Plakates festgelegt. Die Plakatrolle wird dabei mit hohem Druck zusammengedrückt, wodurch scharfkantige Falze entstehen. Um stets die gleichen Bedingungen für das Ankleben der Plakate zu erhalten, wird die Plakatrolle erfindungsgemäß vor dem Flachdrücken so ausgerichtet, daß das außenliegende Plakatende eine vorgegebenen Lage einnimmt.The solution to this problem is a method of get the type mentioned in that the posters to be folded are first rolled up to a poster roll with a predetermined diameter; that the reeling process is ended so that the end of the poster on the outside of the poster takes up a certain adjustable position; and that the poster roll is then flattened, creating the fold. The width of the pressed poster is also determined with the diameter of the poster roll. The poster roll is pressed together with high pressure, creating sharp-edged folds. In order to always maintain the same conditions for adhering the posters, the poster roll is aligned according to the invention before the flattening so that the outer end of the poster occupies a predetermined position.

Für den Aufrollvorgang ist es günstig, daß die Plakate vor dem Aufrollvorgang geglättet werden. Auf diese Weise erhält mann gleichmäßige Plakatrollen, die jeweils dieselbe Beschaffenheit haben.For the reeling process, it is favorable that the posters are smoothed before the reeling process. In this way you get even rolls of posters, each with the same quality.

Um eine enge Faltung zu erhalten, sieht die Erfindung vor, daß die Plakatrolle einen Durchmesser von ca 85 mm aufweiset, wobei die Plakate eine ursprüngliche Länge von über 2,80 m haben können.In order to obtain a tight fold, the invention provides that the poster roll has a diameter of approximately 85 mm, the posters having an original length of over 2.80 m.

Zur Durchführung des erfindungsgemäßen Verfahrens sieht die Erfindung eine Faltmaschine vor, die dadurch gekennzeichnet ist, daß die Faltmaschine eine Aufrollvorrichtung mit einem inneren feststehenden Rohr und eine Vielzahl von antreibbaren, das Rohr umgebende Rollen hat; daß die Rollen mit geringem Abstand vom Rohr angeordnet sind; und daß für die Papierzufuhr als Eingabebereich ein schmaler Bereich des Rohres nicht von Rollen abgedeckt ist. In der Faltmaschine werden die zu faltenden Plakate von den mit einem gewissen Abstand vom Rohr angeordneten Rollen zu einer Plakatrolle aufgewickelt. Zu diesem Zweck werden die Plakate an dem schmalen, nicht von Rollen überdeckten Bereich zwischen Rollen und Rohr eingeschoben. Die in Rotation versetzte Rollen führen dann das eingeführte Plakat um das Rohr herum. Der Abstand zwischen Rohr und den äußeren Rollen kann beispielsweise ca 1 cm betragen.To carry out the method according to the invention, the invention provides a folding machine, which is characterized in that the folding machine has a retractor with an inner fixed tube and a plurality of drivable rollers surrounding the tube; that the rollers are arranged a short distance from the tube; and that for the paper feed a narrow area of the tube is not covered by rollers as an input area. In the folding machine, the posters to be folded are wound up from the rollers arranged at a certain distance from the tube to form a poster roller. For this purpose, the posters are inserted between the rollers and the tube in the narrow area that is not covered by rollers. The rotated rollers then guide the inserted poster around the tube. The distance between the tube and the outer rollers can be about 1 cm, for example.

Die Anordnung der Rollen erfolgt vorzugsweise so, daß mehrere das Rohr umgebende Antriebsachsen vorgesehen sind, auf denen jeweils eine Reihe von Rollen nebeneinander befestigt ist. Damit das zwischen Rohr und Rollen eingeführte Papier nicht zwischen den Achsen nach außen treten kann, können neben oder zwischen den Rollen Abdeckungen vorgesehen sein.The arrangement of the rollers is preferably such that a plurality of drive axles surrounding the tube are provided, on each of which a row of rollers is fastened next to one another. In order that the paper inserted between the tube and the rollers cannot come out between the axes, covers can be provided next to or between the rollers.

Die bevorzugte Ausführungsform der Erfindung sieht vor, daß die Rollen jeweils zweier benachbarter Antriebsachsen auf Lücke angeordnet sind, so daß sie sich seitlich überdecken. Durch diese Maßnahme greifen die Rollen ineinander, wodurch die eingelegten Plakate keine Möglichkeit haben, zwischen den Rollen nach außen zu' gelangen.The preferred embodiment of the invention provides that the rollers of two adjacent drive axles are arranged so that they overlap laterally. As a result of this measure, the rollers interlock, so that the inserted posters have no possibility of getting out between the rollers.

Eine Weiterbildung der Erfindung sieht vor, daß im Eingabebereich verteilt über die Länge des Rohres Kipphebel drehbar befestigt sind, die jeweils das das Rohr umgebende Plakat federnd in Richtung Rohr drücken und dadurch den Durchmesser der Plakatrolle an dieser Stelle geringfügig verkleinern. Auf diese Weise wird vermieden, daß sich die Plakatrolle gegenüber den äußeren angetriebenen Rollen verspannt. Ohne die Kipphebel würde eine solche Verspannung insbesondere bei Plakatrollen auftreten, die eine Vielzahl von Wicklungen , beispielsweise 20 Wicklungen, haben. Da die Kipphebel nachgiebig oder federnd gelagert sind, werden sie von der Plakatrolle mit zunehmender Wicklungszahl nach außen gedrückt.A further development of the invention provides that rocker arms are rotatably mounted in the input area and distributed over the length of the tube, each of which presses the poster surrounding the tube resiliently in the direction of the tube and thereby slightly reduces the diameter of the poster roll at this point. This way you avoid that the poster roll braced against the outer driven rolls. Without the rocker arms, such bracing would occur in particular with poster rolls that have a large number of windings, for example 20 windings. Since the rocker arms are flexible or resilient, they are pushed outwards by the poster roller as the number of windings increases.

Eine besonders günstige Anordnung der Kipphebel ist dadurch gegeben, daß die Kipphebel auf einer außerhalb ihres Schwerpunktes liegenden Achse befestigt sind und durch ihr Eigengewicht auf die Plakatrolle drücken.A particularly favorable arrangement of the rocker arms is given in that the rocker arms are fastened on an axis lying outside their center of gravity and press on the poster roll due to their own weight.

Für Plakate mit kleinerer Länge und damit auch mit kleinerer Wicklungszahl können die Kipphebel in eine Stellung gebracht werden, in der sie den Durchmesser der Plakatrolle nicht beeinflussen. Durch diese Maßnahme wird eine geringfügige Verspannung kleiner Plakate gegenüber den Rollen erreicht, wodurch das jeweils aufgewickelte Plakat beim Abbremsen der Rollen ebenfalls sofort zum Stillstand kommt. Würde die Plakatrolle beim Abbremsen der äußeren Rollen sich noch weiter drehen, so hätte dies den Nachteil, daß das Plakatende keine definierte Lage einnehmen würde.For posters with a smaller length and thus also with a smaller number of windings, the rocker arms can be brought into a position in which they do not influence the diameter of the poster roll. This measure results in a slight tensioning of small posters with respect to the rollers, which means that the poster that is wound up also comes to a standstill when the rollers are braked. If the poster roll would turn even further when the outer rolls were braked, this would have the disadvantage that the end of the poster would not assume a defined position.

Damit die aufgerollte Plakatrolle von dem inneren Rohr auf einfache Weise abgezogen werden kann, sieht die Erfindung weiterhin vor, daß das Rohr an einem Ende fest mit der Faltmaschine verbunden ist; daß das andere Ende freitragend ausgebildet ist; daß am freitragenden Ende eine Abzugsvorrichtung angeordnet ist, die die Plakatrolle vom Rohr axial abzieht. Durch die einseitig freitragende Ausbildung des Rohres ist es möglich, die aufgerollten Plakate ungehindert vom Rohr abzuziehen. Zwar könnte das Rohr auch an beiden Enden mit der Faltmaschine verbunden sein, dann aber müßte eine dieser beiden Verbindungen jeweils vor dem Abziehen der Plakatrolle entfernt werden. Eine solche Lösung wäre gegenüber der erfindungsgemäßen Lösung wesentlich aufwendiger.So that the rolled up roll of posters can be pulled off the inner tube in a simple manner, the invention further provides that the tube is firmly connected at one end to the folding machine; that the other end is self-supporting; that a pull-off device is arranged at the cantilevered end, which pulls the poster roll axially from the tube. By the one-sided self-supporting design of the tube, it is possible to pull the rolled-up posters unhindered from the tube. Although the tube could also be connected to the folding machine at both ends, one of these two connections would then have to be removed before the poster roll is removed. Such a solution would be considerably more complex than the solution according to the invention.

Die Erfindung sieht weiterhin vor, daß die Abzugsvorrichtung eine im Rohr angeordnete Andruckrolle und eine auserhalb des Rohres befindliche Transportrolle hat; daß die Achsen dieser beiden Rollen senkrecht zur Mittelachse des Rohres stehen; daß die Andruckrolle durch einen Schlitz im Rohr an die Transportrolle gedrückt werden kann. Die Transportrolle kann fortwährend rotieren, wobei die Andruckrolle für den Abzugsvorgang aus dem Inneren des Rohres heraus in Richtung Transportrolle gedrückt wird. Dabei wird das zwischen Transportrolle und Andruckrolle befindliche, aufgewickelte Plakat an die Transportrolle gepreßt, wodurch es entsprechend der Drehrichtung der Transportrolle vom Rohr abgezogen wird.The invention further provides that the take-off device has a pressure roller arranged in the tube and a transport roller located outside the tube; that the axes of these two rollers are perpendicular to the central axis of the tube; that the pressure roller can be pressed against the transport roller through a slot in the tube. The transport roller can rotate continuously, the pressure roller for the pull-off process being pressed out of the interior of the tube in the direction of the transport roller. The wound poster located between the transport roller and the pressure roller is pressed against the transport roller, whereby it is pulled off the tube in accordance with the direction of rotation of the transport roller.

Für die Betätigung der Andruckrolle ist vorgesehen, daß die Andruckrolle über ein im Rohr verlaufendes Gestänge betätigbar ist. Das Gestänge ragt vorzugsweise am anderen, nicht freitragenden Ende des Rohres heraus, wo es motorisch, beispielsweise von einem Exzenter, betätigt wird.For the actuation of the pressure roller it is provided that the pressure roller can be actuated via a linkage running in the tube. The linkage preferably protrudes from the other, non-self-supporting end of the tube, where it is actuated by a motor, for example by an eccentric.

Die erfindungsgemäße Faltmaschine ist bevorzugt so ausgebildet, daß in Verlängerung des freien Endes des Rohres eine Falteinrichtung angeordnet ist, die zwei in spitzem Winkel zusammenlaufende Transportbänder hat, die die jeweils abgezogene Plakatrolle flach zusammendrückt; daß sich hinter den Transportbändern Druckrollen anschließen, die ein durchlaufendes, zusammengedrücktes Plakat fest zusammenpressen. Die vom Rohr abgezogenen Plakatrollen gelangen direkt zwischen die beiden Transportbänder. Der gesamte Faltvorgang läuft somit vollautomatisch ab. Die Druckrollen gewährleisten dabei, daß scharfkantige Falze entstehen.The folding machine according to the invention is preferably designed so that a folding device is arranged in the extension of the free end of the tube has two conveyor belts converging at an acute angle, which flatten the respective removed poster roll; that there are pressure rollers behind the conveyor belts, which firmly press a continuous, compressed poster. The poster rolls pulled off the tube go directly between the two conveyor belts. The entire folding process is therefore fully automated. The pressure rollers ensure that sharp-edged folds are created.

Besonders breite Plakatbogen müssen häufig, nachdem sie in Längsrichtung mehrmals gefaltet wurden, nochmals senkrecht dazu in der Mitte gefaltet werden. Zu diesem Zweck ist vorgesehen, daß hinter den Druckrollen ein Faltmesser angeordnet ist, welches sich auf einer Kreisbahn um etwa 90° von einer oberen, über dem gefalteten Plakat befindlichen Lage in eine waagrechte Stellung bewegt und dabei die jeweils von den Druckrollen kommenden Plakate in ihrer Mitte ergreift und sie durch einen in der Seitenansicht etwa v-förmigen Trichter drückt, so daß ein zusätzlicher Mittenfalz entsteht. Dieser Mittenfalz verläuft senkrecht zu den Falzen, die von den Druckrollen erzeugt wurden.Particularly wide poster sheets often have to be folded vertically in the middle after they have been folded several times in the longitudinal direction. For this purpose, it is provided that a folding knife is arranged behind the pressure rollers, which moves on a circular path by approximately 90 ° from an upper position above the folded poster to a horizontal position and thereby the posters coming from the pressure rollers in their Grabs the middle and pushes it through an approximately V-shaped funnel in the side view, so that an additional central fold is created. This center fold runs perpendicular to the folds that were generated by the pressure rollers.

Eine-den Aufrollvorgang begünstigende Weiterbildung der Erfindung sieht vor, daß sich vor dem Eingabebereich eine Walze befindet, die die Plakate vor dem Auffrollvorgang glättet; daß die Walze umlaufende Einstiche hat, in die Führungstäbe einer Führungseinrichtung eingreifen; und daß unter der Walze Gegendruckrollen sind, die die Plakate unten an die sich drehende Walze drücken. Die Führungseinrichtung dient dazu, die Plakate sicher in den Spalt zwischen innerem Rohr und den äußeren Rollen einzuführen. Die Führungsstäbe der Führungseinrichtung sind über die gesammte Breite des Eingabebereiches in geringem Abstand voneinander angeordnet. Die Plakate werden durch das Andrücken an die rotierende Walze in die Aufrollvorrichtung hineingeschoben.A further development of the invention which favors the rolling-up process provides that there is a roller in front of the input area which smoothes the posters before the rolling-up process; that the roller has circumferential recesses, engage in the guide rods of a guide device; and that under the roller there are counter pressure rollers which press the posters against the rotating roller at the bottom. The guide device serves to securely place the posters in the gap between the inside Tube and outer rollers. The guide rods of the guide device are arranged at a short distance from one another over the entire width of the input area. The posters are pushed into the reel-up by pressing on the rotating roller.

Eine Weiterbildung der Erfindung sieht vor, daß die Walze zusammen mit der Führungseinrichtung und mit einem Teil der Rollen nach oben in eine senkrechte Stellung gebracht werden kann. Durch diese Maßnahme kann im Falle einer Störung der Raum zwischen Rohr und den äußeren Rollen zugänglich gemacht werden. Eine solche Störung kann dann auftreten, wenn stark beschädigte Plakate der Aufrollvorrichtung zugeführt werden.A further development of the invention provides that the roller can be brought up into a vertical position together with the guide device and with some of the rollers. This measure makes the space between the tube and the outer rollers accessible in the event of a fault. Such a malfunction can occur when badly damaged posters are fed to the reel-up.

Die Erfindung ist nachfolgend anhand der Zeichnungen näher eräutert. Es zeigen:

  • Fig. 1 die Aufrollvorrichtung einer erfindungsgemäßen Faltmaschine,
  • Fig. 2 die Seitenansicht der Aufrollvorrichtung mit der eingangsseitigen Walze,
  • Fig. 3 eine Ausführungsform der Walze und
  • Fig. 4 die der Aufrollvorrichtung nachgeschaltete Falteinrichtung.
The invention is explained in more detail below with reference to the drawings. Show it:
  • 1 the retractor of a folding machine according to the invention,
  • 2 is a side view of the retractor with the roller on the input side;
  • Fig. 3 shows an embodiment of the roller and
  • Fig. 4 shows the folding device downstream of the retractor.

Die in Fig. 1 dargestellte Aufrollvorrichtung 1 besteht im wesentlichen aus einem inneren Rohr 2 und mehreren Rollen 3, die das Rohr 2 mit geringem Abstand umgeben.The retractor 1 shown in Fig. 1 consists essentially of an inner tube 2 and a plurality of rollers 3 which surround the tube 2 at a short distance.

Die Rollen 3 sind auf mehreren Antriebsachsen 4 bis 11 (Fig. 2) befestigt, die über zugeordnete Zahnräder 12 angetrieben werden. Die Zahnräder 12 greifen in ein Ritzel 13 ein, welches mit einem weiteren Zahnrad 14 fest verbunden ist. Das Zahnrad 14 wird von einem hier nicht dargestellten Zahnriemen angetrieben.The rollers 3 are fastened to a plurality of drive axles 4 to 11 (FIG. 2) which are driven via associated gear wheels 12. The gear wheels 12 engage in a pinion 13 which is firmly connected to a further gear wheel 14. The gear 14 is driven by a toothed belt, not shown here.

Die Rollen 3 sind auf jeder ihrer Antriebsachsen 4 bis 11 mit einem geringen Abstand voneinander angeordnet, sodaß zwischen den auf einer Antriebsachse befindlichen Rollen Lücken entstehen. Die auf einer benachbarten Antriebsachse befestigten Rollen greifen jeweils in diese Lücken ein. Das Rohr 2 wird auf diese Weise so dicht von Rollen 3 umgeben, damit ein zwischen Rollen 3 und Rohr 2 eingelegtes Plakat nicht zwischen den Rollen nach außen entweichen kann.The rollers 3 are arranged on each of their drive axles 4 to 11 with a small distance from one another, so that gaps arise between the rollers located on a drive axle. The rollers attached to an adjacent drive axle each engage in these gaps. In this way, the tube 2 is so closely surrounded by rollers 3 that a poster inserted between rollers 3 and tube 2 cannot escape to the outside between the rollers.

Das Rohr 2 ist an seinem einen Ende 15 fest mit der Faltmaschine verbunden. Im dargestellten Ausführungsbeispiel erfolgt diese Verbindung über zwei Stützen 16, die mit dem Rahmen 17 der Faltmaschine verschraubt sind. Die Stützen 16 umschließen das Rohr 2 vollständig. Das andere Ende 18 des Rohres 2 ist freitragend ausgebildet. Dadurch kann ein innen an den Rollen 3 aufgewickeltes Plakat 19 (Fig. 2) am freitragenden Ende 18 vom Rohr 2 abgezogen werden.The tube 2 is firmly connected at one end 15 to the folding machine. In the illustrated embodiment, this connection is made via two supports 16 which are screwed to the frame 17 of the folding machine. The supports 16 completely enclose the tube 2. The other end 18 of the tube 2 is self-supporting. As a result, a poster 19 (FIG. 2) wound on the inside of the rollers 3 can be pulled off the tube 2 at the self-supporting end 18.

Zu diesem Zweck ist eine Abzugsvorrichtung 20 vorgesehen, die im wesentlichen aus einer Transportrolle 21 und einer Andruckrolle 22 besteht. Ein zwischen Transportrolle 21 und Andruckrolle 22 um das Rohr 2 gewickeltes Plakat wird nun dadurch von dem Rohr 2 abgezogen, daß die Andruckrolle 22 durch einen im Rohr 2 vorgesehenen Schlitz 23 in Richtung Transportrolle 21 gedrückt wird. Die Betätigung der Andruckrolle 22 erfolgt dabei über ein Gestänge 24, welches am anderen Ende 15 aus dem Rohr 2 herausgeführt ist. Wird das Gestänge 24 gegen eine Feder 25 in Pfeilrichtung a gedrückt, so nimmt die Andruckrolle 22 die hier dargestellte Stellung ein. Die Andruckrolle 22 hat diese Stellung während des Aufrollvorganges inne. Ist der Aufrollvorgang beendet, so kann das Gestänge entgegen der Pfeilrichtung a durch die Feder 25 bewegt werden, woduch die Andruckrolle 22 durch den Schlitz 23 in Richtung Transportrolle 21 gedrückt wird. Da die Transportrolle 21 ständig in der angegebenen Richtung rotiert, wird die zwischen Transportrolle 21 und Andruckrolle 22 befindliche Plakatrolle auf diese Weise vom Rohr 2 in Pfeilrichtung b abgezogen.For this purpose, a take-off device 20 is provided, which essentially consists of a transport roller 21 and a pressure roller 22. A poster wrapped between the transport roller 21 and the pressure roller 22 around the tube 2 is now pulled off from the tube 2 in that the pressure roller 22 in the direction through a slot 23 provided in the tube 2 Transport roller 21 is pressed. The pressure roller 22 is actuated via a linkage 24 which is led out of the tube 2 at the other end 15. If the linkage 24 is pressed against a spring 25 in the direction of arrow a, the pressure roller 22 assumes the position shown here. The pressure roller 22 has this position during the reeling process. When the reeling process is finished, the linkage can be moved in the opposite direction of arrow a by the spring 25, whereby the pressure roller 22 is pressed through the slot 23 in the direction of the transport roller 21. Since the transport roller 21 rotates continuously in the specified direction, the poster roller located between the transport roller 21 and the pressure roller 22 is pulled off the tube 2 in the direction of the arrow b in this way.

Die Plakatrolle gelangt dann zwischen zwei übereinander angeordnete Transportbänder 26, 27, die Teil einer Falteinrichtung sind, welche anhand von Fig. 4 näher beschrieben wird.The poster roll then passes between two superposed conveyor belts 26, 27 which are part of a folding device which is described in more detail with reference to FIG. 4.

Fig. 2 zeigt in vereinfachter Darstellung die Seitenansicht der Aufrollvorrichtung 1. F ig. 2 shows a simplified side view of the retractor 1.

Die Rollen 3 sind auf mehreren benachbarten Antriebs- achs.en 4 bis 11 angeordnet. Das Rohr 2 wird von den Rollen 3 vollständig umgeben, ausgenommen ein schmaler Bereich, der als Eingabebereich 28 bezeichnet werden kann. In diesem Eingabebereich 28 werden die Plakate 19 zwischen Rohr 2 und Rollen 3 eingeführt. Durch die Rotation der Rollen 3 in der angegebenen Richtung, wickelt sich das Plakat 19 zu einer Plakatrolle 29 auf.The rollers 3 are arranged on several adjacent drive axles 4 to 11. The tube 2 is completely surrounded by the rollers 3, except for a narrow area, which can be referred to as the input area 28. In this input area 28, the posters 19 are inserted between tube 2 and rollers 3. By rotating the rollers 3 in the specified direction, the poster 19 winds up to form a poster roller 29.

Bevor das Plakat 19 aufgerollt wird, wird es mittels einer Walze 30 geglättet. Zu diesem Zweck werden die Plakate 19 jeweils über eine Umlenkrolle 31 unter der Walze 30 hindurchgeführt. Die Walze 30 rotiert dabei ständig in der angegebenen Richtung. Unter der Walze 30 sind in der Höhe verstellbare Gegendruckrollen 32 angeordnet, die in ihrer oberen Stellung das Plakat 19 an die Walze 30 drücken, so daß das Plakat 19 in der angegebenen Richtung c bewegt wird. Die Gegendruckrollen 32 sind über die Länge der Walze 30 verteilt angeordnet.Before the poster 19 is rolled up, it is smoothed by means of a roller 30. For this purpose, the posters 19 are each passed over a deflection roller 31 under the roller 30. The roller 30 rotates continuously in the specified direction. Under the roller 30, height-adjustable counter-pressure rollers 32 are arranged which, in their upper position, press the poster 19 against the roller 30, so that the poster 19 is moved in the indicated direction c. The counter pressure rollers 32 are distributed over the length of the roller 30.

Damit eine einwandfreie Papierzufuhr gewährleistet ist, hat die erfindungsgemäße Faltmaschine eine Führungseinrichtung 33. Diese besteht im wesentlichen aus Führungsstäben 34, die in an der Walze 30 vorgesehene Einstiche 35 eingreifen. Die Ausführung der Walze 30 mit ihren Einstichen 35 ist in Fig. 3 verdeutlicht.The folding machine according to the invention has a guide device 33 so that a perfect paper feed is ensured. This essentially consists of guide rods 34 which engage in the recesses 35 provided on the roller 30. The design of the roller 30 with its recesses 35 is illustrated in FIG. 3.

Die Führungsstäbe 34 sind so ausgebildet, daß ihre Unterkante 36 nicht niedriger angeordnet ist, als der unterste Punkt der Walze 30. Damit der Eingriff eines Führungsstabes 34 in den zugehörigen Einstich 35 deutlich wird, ist die Walze 30 in Fig. 2 an der entsprechenden Stelle aufgebrochen dargestellt.The guide rods 34 are designed such that their lower edge 36 is not arranged lower than the lowest point of the roller 30. So that the engagement of a guide rod 34 in the associated recess 35 is clear, the roller 30 in Fig. 2 is at the appropriate point shown broken up.

Um einen störungsfreien Aufrollvorgang auch für Plakate größerer Abmessungen zu gewährleisten, ist erfindungsgemäß ein Kipphebel 37 vorgesehen, der die Plakatrolle 29 einseitig in Richtung Rohr 2 eindrückt. Der Kipphebel 37 ist auf einer außerhalb seines Schwerpunktes angebrachten Achse 38 drehbar gelagert, sodaß er durch sein Eigengewicht und das daraus resultierende Drehmoment gegen die Plakatrolle 29 drückt. Mittels eines hier nicht dargestellten Hebels kann der Kipphebel 37 in eine Stellung gebracht werden, in der er den Durchmesser der Plakatrolle 29 nicht mehr beeinflußt.In order to ensure a trouble-free roll-up process even for posters of larger dimensions, a rocker arm 37 is provided according to the invention, which presses the poster roller 29 on one side in the direction of tube 2. The rocker arm 37 is rotatably mounted on an axis 38 attached outside of its center of gravity, so that it passes through presses its own weight and the resulting torque against the poster roller 29. By means of a lever, not shown here, the rocker arm 37 can be brought into a position in which it no longer influences the diameter of the poster roller 29.

Die Papierzufuhr wird vorzugsweise über hier nicht dargestellte Lichtschranken und Anschläge gesteuert. So kann beispielsweise in dem angegebenen Bereich d eine Lichtschranke angeordnet sein, die das Vorhandensein eines Plakates 19 erkennt. Gleichermaßen kann eine zweite Lichtschranke im Bereich des Rohres 2 vorgesehen sein, die feststellt, ob eine Plakatrolle 29 in der Aufrollvorrichtung ist. Über eine Steuerung läßt sich nun die Papierzufuhr so steuern, daß eine Papierzufuhr in die Aufrollvorrichtung verhindert wird, wenn sich bereits ein Plakat in der Aufrollvorrichtung befindet.The paper feed is preferably controlled via light barriers and stops, not shown here. For example, a light barrier can be arranged in the specified area d, which detects the presence of a poster 19. Likewise, a second light barrier can be provided in the area of the tube 2, which determines whether a poster roll 29 is in the reeling device. The paper feed can now be controlled via a control so that paper feed into the reel-up device is prevented when a poster is already in the reel-up device.

Das Ende des Aufrollvorganges läßt sich mittels einer im Bereich d angeordneten Fotozelle steuern. Die Fotozelle erkennt das Plakatende des in die Aufrollvorrichtung eingeschobenen Plakates und veranlaßt nach einer einstellbaren Zeitverzögerung das Abbrechen des Aufrollvorganges. Durch diese Maßnahme ist gewährleistet, daß sich das Plakatende der vollständig aufgerollten Plakatrolle 29 bei Beendigung des Aufrollvorganges stets, an derselben Stelle befindet.The end of the reeling process can be controlled by means of a photocell arranged in area d. The photocell recognizes the end of the poster of the poster inserted into the reel-up device and, after an adjustable time delay, causes the reel-up process to be stopped. This measure ensures that the poster end of the fully rolled up poster roll 29 is always in the same place at the end of the rolling up process.

Um ein möglichst plötzliches Abbremsen der Rollen 3 zu ermöglichen, ist es günstig wenn diese aus einem Material mit möglichst geringer Masse bestehen. Aus diesem Grunde bestehen die Rollen 3 bevorzugt aus Kunststoff. Das plötzliche Abbremsen der Rollen 3 wird dadurch erhalten, daß die auf den Zahnriemen wirkende Antriebswelle zunächst vom Antriebsmotor entkuppelt und unmittelbar danach abgebremst wird.In order to enable the rollers 3 to be braked as suddenly as possible, it is advantageous if they consist of a material with the lowest possible mass. For this reason, the rollers 3 are preferably made of plastic. The sudden braking of the rollers 3 is obtained in that the drive shaft acting on the toothed belt is first uncoupled from the drive motor and braked immediately thereafter.

In Fig. 4 ist die Falteinrichtung 40 dargestellt.4, the folding device 40 is shown.

Über zwei in spitzem Winkel zulaufende Transportbänder26, 2'7 wird die Plakatrolle 29 flach zusammengedrückt und unter Druck zwischen zwei Druckrollen 41, 42 hindurchgeführt. Durch den hohen Druck, den die beiden Druckrollen 41, 42 auf das vorgefaltete Plakat ausüben, entstehen scharfkantige Falze.The poster roller 29 is pressed flat together via two conveyor belts 26, 2 ' 7 tapering at an acute angle and passed under pressure between two pressure rollers 41, 42. The high pressure that the two pressure rollers 41, 42 exert on the pre-folded poster creates sharp-edged folds.

Hinter den Druckrollen 41, 42 ist ein bewegliches Faltmesser 43 angeordnet. Dieses Faltmesser 43 dient dazu, die schmal zusammengefalteten Plakate nochmals in der Mitte zu falten. Diese Mittenfaltung ist bei Plakaten mit großer Breite erforderlich.A movable folding knife 43 is arranged behind the pressure rollers 41, 42. This folding knife 43 serves to fold the narrowly folded posters again in the middle. This center folding is necessary for posters with a large width.

Das zwischen den Druckrollen 41 und 42 hindurchgeführte Plakat wird unter dem senkrecht stehenden Faltmesser 43 hindurchgeführt, bis die Hälfte des Plakates das in der gestrichelten Stellung befindliche Faltmesser passiert hat. Während das Plakat kontinuierlich weitertransportiert wird, bewegt sich das Faltmesser 43 entsprechend der angegebenen Pfeilrichtung nach unten. Dadurch wird das Plakat in den v-förmigen Trichter 44 hineingedrückt und zwischen zwei Faltrollen 45 hindurchgeführt. Das Faltmesser 43 bewegt sich dabei mit der Geschwindig - keit wie die Mitte des Plakates. Der Balken 46,an dem das Faltmesser 43 außen befestigt ist, bewegt sich dabei in der angegebenen Pfeilrichtung mit einer abnehmenden Winkelgeschwindigkeit. Die erforderliche abnehmende Winkelgeschwindigkeit wird durch einen hier nicht dargestellten Steuernocken erzielt.The poster passed between the pressure rollers 41 and 42 is passed under the vertical folding knife 43 until half of the poster has passed the folding knife in the dashed position. While the poster is being transported continuously, the folding knife 43 moves downward in accordance with the direction of the arrow indicated. As a result, the poster is pressed into the V-shaped funnel 44 and passed between two folding rollers 45. The folding knife 43 moves with the speed like the center of the poster. The bar 46, on which the folding knife 43 is fastened on the outside, moves in the direction of the arrow indicated by one increasing angular velocity. The required decreasing angular velocity is achieved by a control cam, not shown here.

Nachdem das Plakat die Faltrollen 45 durchlaufen hat, gelangt es über ein drittes Transportband 47 zum Ausgang der Falteinrichtung 40. Es sind noch zwei weitereAfter the poster has passed through the folding rollers 45, it reaches the exit of the folding device 40 via a third conveyor belt 47. There are two more

Transportbänder 48, 49 vorgesehen, zwischen denen Plakate kleinerer Abmessungen zum Ausgang transportiert werden, da diese kleineren Plakate in der Mitte nicht gefaltet werden müssen.Conveyor belts 48, 49 are provided, between which posters of smaller dimensions are transported to the exit, since these smaller posters do not have to be folded in the middle.

Claims (16)

1. Verfahren zum Falten von Plakaten, mit dem Plakate unterschiedlicher Länge mehrfach gefaltet werden können, dadurch gekennzeichnet, daß die zu faltenden Plakate (19) zunächst zu einer Plakatrolle (29) mit vorgegebenem Durchmesser aufgerollt werden; daß der Aufrollvorgang so beendet wird, daß das an der Plakatrolle (29) außenliegende Plakatende eine bestimmte einstellbare Lage einnimmt; und daß die Plakatrolle (29) dann flachgedrückt wird, wodurch die Faltung entsteht.1. A method of folding posters with which posters of different lengths can be folded several times, characterized in that the posters (19) to be folded are first rolled up to form a poster roll (29) with a predetermined diameter; that the reeling process is ended in such a way that the poster end on the outside of the poster roll (29) assumes a certain adjustable position; and that the poster roll (29) is then flattened, creating the fold. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Plakate (19) vor dem Aufrollvorgang geglättet werden.2. The method according to claim 1, characterized in that the posters (19) are smoothed before the reeling process. 3. Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Plakatrolle (29) einen Durchmesser von ca. 85 mm aufweist, wobei die Plakate (19) eine ursprüngliche Länge von über 2,80 m haben können.3. The method according to any one of claims 1 or 2, characterized in that the poster roll (29) has a diameter of about 85 mm, wherein the posters (19) can have an original length of over 2.80 m. 4. Faltmaschine zur Durchführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß die Faltmaschine eine Aufrollvorrichtung (1) mit einem inneren feststehenden Rohr (2) und eine Vielzahl von antreibbaren, das Rohr (2) umgebende Rollen (3) hat; daß die Rollen (3) mit geringem Abstand vom Rohr (2) angeordnet sind; und daß für die Papierzufuhr als Eingabebereich (28) ein schmaler Bereich des Rohres (2) nicht von Rollen (3) abgedeckt ist.4. Folding machine for performing the method according to claim 1, characterized in that the folding machine has a retractor (1) with an inner fixed tube (2) and a plurality of drivable, the tube (2) has giving roles (3); that the rollers (3) are arranged at a short distance from the tube (2); and that for the paper feed as an input area (28) a narrow area of the tube (2) is not covered by rollers (3). 5. Faltmaschine nach Anspruch 4, dadurch gekennzeichnet, daß mehrere das Rohr (2) umgebende Antriebsachsen (4 bis 11) vorgesehen sind, auf denen jeweils eine Reihe von Rollen (3) nebeneinander befestigt ist.5. Folding machine according to claim 4, characterized in that a plurality of the tube (2) surrounding drive axles (4 to 11) are provided, on each of which a row of rollers (3) is attached side by side. 6. Faltmaschine nach einem der Ansprüche 4 oder 5, dadurch gekennzeichnet, daß die Rollen (3) jeweils zweier benachbarter Antriebsachsen (4, 5; 6, 7; 8, 9; 10, 11) auf Lücke angeordnet sind, so daß sie sich seitlich überdecken.6. Folding machine according to one of claims 4 or 5, characterized in that the rollers (3) each have two adjacent drive axes (4, 5; 6, 7; 8, 9; 10, 11) are arranged on a gap so that they cover laterally. 7. Faltmaschine nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet , daß im Eingabebereich (28) verteilt über die Länge des Rohres (2) Kipphebel (37) drehbar befestigt sind, die jeweils das das Rohr umgebende Plakat (19) federnd in Richtung Rohr (2) drücken und dadurch den Durchmesser der Plakatrolle (29) an dieser Stelle geringfügig verkleinern.7. Folding machine according to one of claims 4 to 6, characterized in that in the input area (28) distributed over the length of the tube (2) rocker arm (37) are rotatably fastened, each of which surrounds the tube poster (19) resiliently in the direction Press tube (2) and thereby slightly reduce the diameter of the poster roll (29) at this point. 8. Faltmaschine nach Anspruch 7, dadurch gekennzeichnet, daß die Kopphebel (37) auf einer außerhalb ihres Schwerpunktes liegenden Achse (38) befestigt sind und durch ihr Eigengewicht auf die Plakatrolle (29) drücken.8. A folding machine according to claim 7, characterized in that the coupling levers (37) are fastened on an axis (38) lying outside their center of gravity and press on the poster roll (29) by their own weight. 9. Faltmaschine nach einem der Ansprüche 7 oder 8, dadurch gekennzeichnet, daß die Kipphebel (37) in eine Stellung verbringbar sind, in der sie den Durchmesser der Plakatrolle (29) nicht beeinflussen.9. Folding machine according to one of claims 7 or 8, characterized in that the rocker arms (37) can be brought into a position in which they do not influence the diameter of the poster roll (29). 10. Faltmaschine nach einem der Ansprüche 4 bis 9, dadurch gekennzeichnet, daß das Rohr (2) an einem Ende (15) fest mit der Faltmaschine verankert ist; daß das andere Ende (18) freitragend ausgebildet ist; daß am freitragenden Ende (18) eine Abzugsvorrichtung (20) angeordnet ist, die die Plakatrolle (29) vom Rohr (2) axial abzieht.10. Folding machine according to one of claims 4 to 9, characterized in that the tube (2) at one end (15) is firmly anchored to the folding machine; that the other end (18) is self-supporting; that a pull-off device (20) is arranged at the cantilevered end (18), which pulls the poster roll (29) axially from the tube (2). ll. Faltmaschine nach Anspruch 10, dadurch gekennzeichnet, daß die Abzugsvorrichtung (20) eine im Rohr (2) angeordnete Andruckrolle (22) und eine außerhalb des Rohres befindliche Transportrolle (21) hat; daß die Achsen dieser beiden Rollen (21, 22) senkrecht zur Mittelachse des Rohres (2) stehen; daß die Andruckrolle (22) durch einen Schlitz (23) im Rohr (2) an die Transportrolle (21) gedrückt werden kann.ll. Folding machine according to claim 10, characterized in that the draw-off device (20) has a pressure roller (22) arranged in the tube (2) and a transport roller (21) located outside the tube; that the axes of these two rollers (21, 22) are perpendicular to the central axis of the tube (2); that the pressure roller (22) can be pressed through a slot (23) in the tube (2) to the transport roller (21). 12. Faltmaschine nach Anspruch 11, dadurch gekennzeichnet, daß die Andruckrolle (22) über ein im Rohr (2) verlaufendes Gestänge (24) betätigbar ist.12. Folding machine according to claim 11, characterized in that the pressure roller (22) via a pipe (2) extending linkage (24) can be actuated. 13. Faltmaschine nach einem der Ansprüche 10 bis 12, dadurch gekennzeichnet, daß in Verlängerung des freien Endes (18) des Rohres (2) eine Falteinrichtung (40) angeordnet ist, die zwei in spitzem Winkel zusammenlaufende Transportbänder (26,27) hat, die die jeweils abgezogene Plakatrolle (29) flach zusammendrückt; daß sich hinter den Transportbändern (26,27) Druckrollen (41,42) anschließen, die ein durchlaufendes, zusammengedrücktes Plakat fest zusammenpressen.13. Folding machine according to one of claims 10 to 12, characterized in that in extension of the free end (18) of the tube (2) a folding device (40) is arranged, which has two conveyor belts (26, 27) converging at an acute angle, which flatly compresses the respectively removed poster roll (29); that behind the conveyor belts (26, 27) there are pressure rollers (41, 42) which firmly press together a continuous, compressed poster. 14. Faltmaschine nach Anspruch 13, dadurch gekennzeichnet, daß hinter den Druckrollen (41, 42) ein Faltmesser (43) angeordnet ist, welches sich auf einer Kreisbahn um etwa 90° von einer oberen, über den gefalteten Plakaten befindliche Lage in eine waagrechte Stellung bewegt und dabei die jeweils von den Druckrollen (41, 42) kommenden Plakate in ihrer Mitte ergreift und sie durch einen in der Seitenansicht etwa v-förmigen Trichter (44) drückt, so daß ein zusätzlicher Mittenfalz entsteht.14. Folding machine according to claim 13, characterized in that a folding knife (43) is arranged behind the pressure rollers (41, 42), which is on a circular path by approximately 90 ° from an upper position above the folded posters in a horizontal position moved and grips the posters coming from the pressure rollers (41, 42) in the middle and presses them through a funnel (44) which is approximately V-shaped in side view, so that an additional central fold is created. 15. Faltmaschine nach einem der Ansprüche 4 bis 14, dadurch gekennzeichnet, daß s.ich vor dem Eingabebereich (28) eine Walze (30) befindet, die die Plakate (19) vor dem Aufrollvorgang glättet; daß die Walze (30) umlaufende Einstiche (35) hat, in die Führungsstäbe (34) einer Führungseinrichtung (33) eingreifen; und daß unter der Walze (30) Gegendruckrollen (32) sind, die die Plakate (19) unten an die sich drehende Walze (30) drücken.15. Folding machine according to one of claims 4 to 14, characterized in that s.ich in front of the input area (28) is a roller (30) which smoothes the posters (19) before the reeling process; that the roller (30) has circumferential recesses (35) which engage in the guide rods (34) of a guide device (33); and that under the roller (30) there are counter-pressure rollers (32) which press the posters (19) down against the rotating roller (30). 16. Faltmaschine nach Anspruch 15, dadurch gekennzeichnet, daß die Walze (30) zusammen mit der Führungseinrichtung (33) und mit einem Teil der Rollen (3) nach oben in eine senkrechte Stellung gebracht werden kann.16. Folding machine according to claim 15, characterized in that the roller (30) together with the guide device (33) and with part of the rollers (3) can be brought up into a vertical position.
EP81109910A 1981-11-26 1981-11-26 Method and machine for folding posters Expired EP0080519B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE8181109910T DE3175074D1 (en) 1981-11-26 1981-11-26 Method and machine for folding posters
EP81109910A EP0080519B1 (en) 1981-11-26 1981-11-26 Method and machine for folding posters
ES517180A ES517180A0 (en) 1981-11-26 1982-11-06 MACHINE FOR THE FOLDING OF POSTERS.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP81109910A EP0080519B1 (en) 1981-11-26 1981-11-26 Method and machine for folding posters

Publications (2)

Publication Number Publication Date
EP0080519A1 true EP0080519A1 (en) 1983-06-08
EP0080519B1 EP0080519B1 (en) 1986-08-06

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ID=8188036

Family Applications (1)

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EP81109910A Expired EP0080519B1 (en) 1981-11-26 1981-11-26 Method and machine for folding posters

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Country Link
EP (1) EP0080519B1 (en)
DE (1) DE3175074D1 (en)
ES (1) ES517180A0 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4479640A (en) * 1983-07-22 1984-10-30 Smith Carol E Flat piece folding apparatus with variable speed, and method
EP0363917A2 (en) * 1988-10-14 1990-04-18 Leica AG Winding device for paper, textile or synthetic webs
GB2315477A (en) * 1996-07-23 1998-02-04 Fillmatic Polsterindustrie Mas Packaging of compressed mattresses

Citations (8)

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Publication number Priority date Publication date Assignee Title
DE276592C (en) * 1911-03-20
GB862296A (en) * 1958-04-02 1961-03-08 Strachan & Henshaw Ltd Improvements in or relating to apparatus for folding paper or like webs
DE1295304B (en) * 1963-07-29 1969-05-14 Lee Kennth Philip Roll-up device for winding web material without a winding carrier
FR2022463A1 (en) * 1968-11-02 1970-07-31 Sala Granel Jose
US3671033A (en) * 1970-11-23 1972-06-20 Coast Machinery Inc Machine and method for folding plastic bags and the like
US3711085A (en) * 1970-08-28 1973-01-16 E Bunch Folder for business forms
FR2412485A2 (en) * 1977-12-26 1979-07-20 Duflot Rene Cloth folding machine - has support delivering cloths and belt discharging them travelling in same direction
EP0007442A1 (en) * 1978-06-28 1980-02-06 Union Carbide Corporation Bag folding machine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE276592C (en) * 1911-03-20
GB862296A (en) * 1958-04-02 1961-03-08 Strachan & Henshaw Ltd Improvements in or relating to apparatus for folding paper or like webs
DE1295304B (en) * 1963-07-29 1969-05-14 Lee Kennth Philip Roll-up device for winding web material without a winding carrier
FR2022463A1 (en) * 1968-11-02 1970-07-31 Sala Granel Jose
US3711085A (en) * 1970-08-28 1973-01-16 E Bunch Folder for business forms
US3671033A (en) * 1970-11-23 1972-06-20 Coast Machinery Inc Machine and method for folding plastic bags and the like
FR2412485A2 (en) * 1977-12-26 1979-07-20 Duflot Rene Cloth folding machine - has support delivering cloths and belt discharging them travelling in same direction
EP0007442A1 (en) * 1978-06-28 1980-02-06 Union Carbide Corporation Bag folding machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4479640A (en) * 1983-07-22 1984-10-30 Smith Carol E Flat piece folding apparatus with variable speed, and method
EP0363917A2 (en) * 1988-10-14 1990-04-18 Leica AG Winding device for paper, textile or synthetic webs
EP0363917A3 (en) * 1988-10-14 1990-08-22 Wild Leitz Ag Winding device for paper, textile or synthetic webs
GB2315477A (en) * 1996-07-23 1998-02-04 Fillmatic Polsterindustrie Mas Packaging of compressed mattresses
GB2315477B (en) * 1996-07-23 1998-06-24 Fillmatic Polsterindustrie Mas Device for the packaging of mattresses

Also Published As

Publication number Publication date
ES8400349A1 (en) 1983-11-01
DE3175074D1 (en) 1986-09-11
EP0080519B1 (en) 1986-08-06
ES517180A0 (en) 1983-11-01

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