EP0120251B1 - Method and device for enveloping preferably quadrangular objects with a tape-like enveloping material - Google Patents

Method and device for enveloping preferably quadrangular objects with a tape-like enveloping material Download PDF

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Publication number
EP0120251B1
EP0120251B1 EP84101408A EP84101408A EP0120251B1 EP 0120251 B1 EP0120251 B1 EP 0120251B1 EP 84101408 A EP84101408 A EP 84101408A EP 84101408 A EP84101408 A EP 84101408A EP 0120251 B1 EP0120251 B1 EP 0120251B1
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EP
European Patent Office
Prior art keywords
article
sheet
movement
path
wrapping
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84101408A
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German (de)
French (fr)
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EP0120251A1 (en
Inventor
Gottlieb Benz
Hans-Ulrich Stauber
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.)
Ferag AG
Original Assignee
Ferag AG
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Filing date
Publication date
Application filed by Ferag AG filed Critical Ferag AG
Priority to AT84101408T priority Critical patent/ATE28161T1/en
Publication of EP0120251A1 publication Critical patent/EP0120251A1/en
Application granted granted Critical
Publication of EP0120251B1 publication Critical patent/EP0120251B1/en
Expired legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/06—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths
    • B65B11/08—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a single straight path
    • B65B11/10—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a single straight path to fold the wrappers in tubular form about contents

Definitions

  • the present invention relates to a method and a device for wrapping cuboid, compressible objects, in particular packages of flat products lying on top of one another, for example printed products, with a web-shaped wrapping material according to the preamble of claim 1 and claim 9.
  • the present invention is based on the object of providing a method and a device of the type mentioned at the outset which, while avoiding heat shrinkage, allows compressible objects to be wrapped around in a simple, rapid and cost-effective manner.
  • the wrapping device shown in FIGS. 1-5 has a frame 1 which carries the various components.
  • a belt conveyor 2 is mounted in the frame 1, which can be driven in the direction of arrow A.
  • a further belt conveyor 3 is arranged above this first belt conveyor 2 and can be raised and lowered in the direction of arrow C by means of a lifting device 4.
  • the conveying direction B of the second belt conveyor 3 runs parallel to the conveying direction A of the first belt conveyor 2.
  • a support table 5 is provided at a distance with a belt conveyor 6, the height of which is aligned with the first belt conveyor 2 and which can be driven in opposite directions D and D '(FIGS. 4 and 5).
  • the support table 5 is supported on a rotary mechanism 7, which enables the support table 5 to be rotated about its vertical axis 5a.
  • a further belt conveyor 8 is arranged above the support table 5, which can be driven in the direction of arrow E and can be raised and lowered in the direction of arrow F by means of a lifting device 9.
  • This belt conveyor 8 is located essentially at the same height as the upstream belt conveyor 3.
  • a belt conveyor designated by 10 is supported on the frame 1, which belt drive is driven in the direction of arrow G and which is aligned with the belt conveyors 2 and 6 .
  • These three belt conveyors 2, 6 and 10 define the path of movement of the object to be wrapped in a manner to be described.
  • a supply roll 11 is mounted, on which a web 12 of a wrapping material is wound.
  • this wrapping material is a plastic film with self-adhesive properties, e.g. B. a polyvinyli denchloride film, as it is commercially available under the name Saran.
  • This film 12 is guided by the supply roll 11 via a guide roll 13 and a deflection roll 14.
  • the film section 15 located behind this deflection roller 14 runs essentially in a vertical direction, ie transversely to the movement path of the object to be wrapped.
  • This film section 15 is held releasably in the region of its free end 15a by means of a stationary arrangement 16.
  • This holding arrangement 16 has one or more needles 16a which can be displaced in the direction of its longitudinal axis and penetrate the film section 15 in the active position.
  • the film section 15 is held tensioned between the deflection roller 14 and the retaining arrangement 16.
  • two retaining arrangements 17 and 18 are also attached to the latter, which correspond to the retaining arrangement 16 in terms of construction and also have two or more needles 17a and 18a which can be displaced in the direction of their longitudinal axis.
  • these needles 17a, 18a are shown in their retracted rest position.
  • one of the two holding arrangements 17 or 18 is opposite the holding arrangement 16 at a distance.
  • a separating device 19 which has a separating knife 19a which can be raised and lowered in the direction of the arrow H.
  • two rod-shaped driver elements 20 are arranged, which are connected at their ends to drive elements 21 which are only shown schematically. The latter are guided over deflection rollers 22 and 23, one of which is driven.
  • the driver elements 20 move in the vertical direction between an upper end position, which is shown in FIGS. 1, 2, 4 and 5, and a lower end position (FIG. 3), in which they are below the two opposing retaining arrangements 16 and 17 and adjacent to the separator 19.
  • the drive of the belt conveyors 6 and 8 is stopped.
  • the driver elements 20 are moved from their upper end position (FIG. 2) to their lower end position (FIG. 3).
  • these driver elements 20 are in their upper end position above the film section running on the top 24d of the package 24, so that the film 12 is carried along when the driver elements 20 move downward.
  • a loop 25 is formed, as shown in FIG. 3.
  • the two film sections 15 'and 26 forming this loop 25 are held in the region of their ends by the holding arrangement 16 and by the holding arrangement 17, respectively.
  • the support table 5 is rotated through its rotary mechanism 7 by 180 ° about its axis 5a.
  • the support table 5 is shown in its position after rotation.
  • the belt conveyor 8 is lowered onto the package 24 again.
  • the two belt conveyors 6 and 8 are driven in the direction of the arrows D 'and E, whereby the package 24 is moved forward in the direction of these arrows D', E against the belt conveyor 10 on the outlet side.
  • the film section 26 lies against the leading side 24b of the package 24, which was originally the rear side, while the protruding end section 26a of this film section 26 released by the retaining arrangement 17 is folded against the standing surface 24c of the package 24.
  • This folded end section 26a comes into contact with the film section designated 12a "in FIG. 5, which was placed on this standing surface 24c when the film section 15 was applied in a U-shape.
  • the two come into contact with one another Foil sections 26a and 12a "a releasable but retaining connection.
  • the package 24 wrapped with the film section 12 " is now transferred by the belt conveyor 10 to a removal conveyor which takes the package 24 to a further processing point. During this further transport, the printed products P wrapped in the film section 12" cannot fall apart. In addition, these printed products P are protected by this film section 12 ′′. If required, the finished package 24 can still be tied up.
  • FIGS. 6-15 corresponds both in terms of structure and effectiveness in many parts to the embodiment according to FIGS. 1-5. For this reason, the same reference numbers are used in FIGS. 6-15 for corresponding components as in FIGS. 1-5.
  • the structure and the mode of operation of this second embodiment are described below only with regard to the differences from the first embodiment.
  • the support table 5 cannot be rotated but can be raised and lowered in the direction of arrow I by means of a lifting mechanism 27.
  • two U-shaped support elements 28 and 29 are provided, which are arranged on both sides of the movement path of the package 24 (FIG. 13). Each of these two support elements 28 and 29 is pivotable about an axis 30 and 31 running parallel to the direction of movement of the object 24 and points at it. Axes 30, 31 opposite end on an angled support part 28a and 29a. As shown in FIGS. 13-15, the belt conveyor 6 is less wide than the package 24.
  • two rod-shaped turning elements 32 and 33 are also present, which extend transversely to the movement path of the package 24 and which are connected at their ends to drive elements 34, 34 '.
  • the latter can be driven in a manner not shown, so that the turning elements 32, 33 are moved in the direction of arrow K along a closed orbit.
  • the impact elements 32 and 33 lie opposite one another as shown in FIGS. 6-8 and 10-12.
  • the first step of the wrapping process namely the U-shaped application of the material web section 15 on three sides of the package 24, is exactly the same in both embodiments.
  • the projecting end section 26a of the film section 26 is concealed under the package 24 in the second embodiment differently than in the first embodiment. This omission of the end section 26a is now explained in more detail below.
  • the support elements 28 and 29 are pivoted away from the package 24 in their waiting position. This means that in this waiting position the support parts 28a, 29a do not engage under the package 24.
  • the support elements 28, 29 are now pivoted into their operative position, in which the support parts 28a, 29a come to rest below the package 24.
  • the support table 5 is lowered in the direction of the arrow I (FIG. 9).
  • the package 24 comes to rest with its base 24c on the support part 28a, 29a of the support elements 28, 29 in their operative position.
  • an intermediate space 35 is formed between the package 24 and the support table 5, ie the belt conveyor 6.
  • the impact elements 32 and 33 are set in motion in the direction of the arrow K.
  • the impact element 32 acts on the projecting end section 26a of the film section 26.
  • this projecting end section 26a which in the meantime has been released by the holding arrangement 17, is placed under the package 24.
  • the support parts 28a, 29a of the support elements 28, 29 come to lie between the package 24 and the folded end section 26a.
  • these impact elements 32, 33 are stopped.
  • the other wrapping element 33 is now ready for embossing the protruding end section 26a in the next package 24.
  • the support table 5 is raised again by means of the lifting mechanism 27, so that the package 24 comes to rest on the belt conveyor 6 (FIGS. 11 and 15).
  • the two overlapping ends 26a and 12a "of the film section 12" surrounding the package 24 are pressed together.
  • their support parts 28a, 29a are pulled away from the package 24.
  • This pulling away of the support parts 28a, 29a "arranged between the film end sections 26a and 12a” can be carried out without difficulty since, as already mentioned, the two film end sections 26a and 12a "by the belt conveyor 6, the dead weight of the package 24 and that exerted by the overhead belt conveyor 8 Press force are held together.
  • the completely wrapped package 24 is then transferred to the outlet-side belt conveyor 10, as shown in FIG. 12, which corresponds to FIG. 5.
  • the embodiment according to FIGS. 6-15 has the advantage over the embodiment according to FIGS. 1-5 that the winding cycle takes less time due to the absence of a rotary movement of the support table 5, which enables a higher work output.
  • both embodiments can be designed in different parts differently than as shown and described.
  • it can be expedient to hold the ends of the film sections 15 'and 26a in a manner other than with needles 16a, 17a, 18a, for example by means of negative pressure.
  • a polyvinylidene chloride film (Saran) is particularly suitable as a wrapping material because of its self-adhesive properties, it is of course also possible to use other materials, i. H. e.g. B. in addition to other plastic films also paper webs. When using such materials, it is u. However, it may be necessary to ensure by gluing or other suitable means that the overlapping end sections 26a, 12a "are connected to one another.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Packaging Of Special Articles (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Confectionery (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Packages (AREA)
  • Advancing Webs (AREA)

Abstract

The package to be wrapped is moved during a first step towards a foil section which is extended under tension transversely relative to the direction of movement of the package. During a further course of movement of the package the aforementioned foil section is applied to three sides around the package in a substantially U-shape. Subsequently, a loop is formed from the web-like foil by entraining means which act on the web-like foil. The two runs of the loop are releasably held at their ends by related holding means. These two loop runs of the foil are separated from each other using a cutting knife. The foil section thus produced, which runs along the rear side of the package, has a length which is greater than the height of the package. An end section of this foil section of greater length and which protrudes past the package is now displaced towards and against the underside of the package. A wrapping material preferably consisting of a polyvinylidene chloride foil having self-adhesive properties is used as the web-like foil.

Description

Die vorliegende Erfindung betrifft ein Verfahren sowie eine Vorrichtung zum Umwickeln von quaderförmigen, kompressiblen Gegenständen, insbesondere Paketen von aufeinanderliegenden flächigen Erzeugnissen, beispielsweise Druckprodukten, mit einem bahnförmigen Umwickelmaterial gemäss Oberbegriff des Anspruches 1 bzw. des Anspruches 9.The present invention relates to a method and a device for wrapping cuboid, compressible objects, in particular packages of flat products lying on top of one another, for example printed products, with a web-shaped wrapping material according to the preamble of claim 1 and claim 9.

Aus der DE-A-1 761 851 ist ein Verfahren bzw. eine Vorrichtung dieser Art bekannt, bei dem bzw. bei der das zu verpackende Paket aus aufeinanderliegenden Zeitschriften durch einen quer zu dessen Bewegungsbahn verlaufenden Folienvorhang hindurchbewegt wird. Dabei wird die wärmeschweissbare und wärmeschrumpfbare Verpackungsfolie mitgenommen und an die Vorderseite und die Grundfläche des Paketes angelegt. Erst beim anschliessenden Entlangführen der Materialbahn entlang der hinteren Seite des Paketes, welches im Stillstand des letzteren erfolgt, kommt die Folie auch auf der Oberfläche des Paketes zur Auflage. Dies bedeutet, dass die Folie verhältnismässig lose um das Paket herumgelegt wird. Dies ist jedoch in keiner Weise nachteilig, wird doch durch anschliessendes Wärmeschrumpfen die Folie satt um das Paket gelegt. Diese bekannte Lösung hat nun den Nachteil eines beträchtlichen konstruktiven Aufwandes und macht weiter den Einsatz von verhältnismässig dicken, wärmeschweissbaren und wärmeschrumpfbaren Folien notwendig.From DE-A-1 761 851 a method and a device of this type are known, in which or in which the package to be packaged is moved from stacked magazines through a film curtain running transversely to its path of movement. The heat-sealable and heat-shrinkable packaging film is taken along and applied to the front and the base of the package. Only when the material web is subsequently guided along the rear side of the package, which takes place when the latter is at a standstill, does the film also come to rest on the surface of the package. This means that the film is placed loosely around the package. However, this is in no way disadvantageous since the film is then wrapped around the package by heat shrinking. This known solution now has the disadvantage of considerable design effort and also makes it necessary to use relatively thick, heat-weldable and heat-shrinkable films.

Der vorliegenden Erfindung liegt nun die Aufgabe zugrunde, ein Verfahren bzw. eine Vorrichtung der eingangs genannten Art zu schaffen, das bzw. die unter Vermeidung einer Wärmeschrumpfung auf möglichst einfache, rasche und kostengünstige Weise ein Umwickeln von kompressiblen Gegenständen erlaubt.The present invention is based on the object of providing a method and a device of the type mentioned at the outset which, while avoiding heat shrinkage, allows compressible objects to be wrapped around in a simple, rapid and cost-effective manner.

Gelöst wird diese Aufgabe durch die Merkmale des kennzeichnenden Teiles des Anspruches 1 bzw. des Anspruches 9.This object is achieved by the features of the characterizing part of claim 1 and claim 9.

Dadurch, dass der zu umwickelnde Gegenstand während des Umwickelvorganges zusammengepresst wird und zudem die am freien Ende festgehaltene Materialbahn satt um den zusammengepressten Gegenstand gelegt wird, ist ohne Wärmeschrumpfung eine sehr enge Umhüllung des Gegenstandes möglich, da sich nach erfolgtem Umwickeln der Gegenstand entspannt, was zur Folge hat, dass der letzteren bereits satt umgebende Materialbahnabschnitt, dessen Enden miteinander verbunden sind, unter eine noch grössere Zugspannung gesetzt wird. Da weder eine Wärmeschweissung noch eine Wärmeschrumpfung zwingend nötig sind, können Umwickelmaterialen verwendet werden, deren Beschaffungspreis tiefer liegt als bei schweiss- und schrumpfbaren Materialien.Because the object to be wrapped is pressed together during the wrapping process and, moreover, the material web held at the free end is placed snugly around the compressed object, a very tight wrapping of the object is possible without heat shrinkage, since after wrapping the object relaxes, which leads to The consequence of this is that the material web section which already surrounds the latter and whose ends are connected to one another is placed under an even greater tensile stress. Since neither heat welding nor heat shrinking is absolutely necessary, wrapping materials can be used whose procurement price is lower than that of weldable and shrinkable materials.

Mit dem erfindungsgemässen Verfahren bzw. der erfindungsgemässen Vorrichtung ist wegen der Einfachheit des nur wenige Schritte aufweisenden Umwickelvorganges eine hohe Arbeitsleistung möglich.With the method according to the invention and the device according to the invention, a high work output is possible because of the simplicity of the wrapping process, which has only a few steps.

Im folgenden werden anhand der Zeichnung Ausführungsbeispiele des Erfindungsgegenstandes näher erläutert. Es zeigen rein schematisch :

  • Figur 1 in Seitenansicht eine erste Ausführungsform einer Umwickeleinrichtung,
  • Figuren 2-5 einen Teil der Umwickeleinrichtung gemäss Fig. 1 in verschiedenen Arbeitsphasen,
  • Figur 6 in Seitenansicht eine zweite Ausführungsform einer Umwickeleinrichtung,
  • Figuren 7-12 einen Teil der Umwickeleinrichtung gemäss Fig. 6 in verschiedenen Arbeitsphasen,
  • Figur 13 einen Schnitt entlang der Linie XIII-XIII in Fig. 7,
  • Figur 14 einen Schnitt entlang der Linie XIV-XIV in Fig. 10, und
  • Figur 15 einen Schnitt entlang der Linie XV-XV in Fig. 11.
Exemplary embodiments of the subject matter of the invention are explained in more detail below with reference to the drawing. It shows purely schematically:
  • FIG. 1 shows a side view of a first embodiment of a wrapping device,
  • FIGS. 2-5 show part of the wrapping device according to FIG. 1 in different working phases,
  • FIG. 6 is a side view of a second embodiment of a wrapping device,
  • FIGS. 7-12 a part of the wrapping device according to FIG. 6 in different working phases,
  • FIG. 13 shows a section along the line XIII-XIII in FIG. 7,
  • FIG. 14 shows a section along the line XIV-XIV in FIG. 10, and
  • FIG. 15 shows a section along the line XV-XV in FIG. 11.

Die in den Fig. 1-5 gezeigte Umwickeleinrichtung weist ein Gestell 1 auf, das die verschiedenen Bauteile trägt. Auf der Einlaufseite der Einrichtung ist ein im Gestell 1 ortsfest gelagerter Bandförderer 2 angeordnet, der in Richtung des Pfeiles A angetrieben werden kann. Oberhalb dieses ersten Bandförderers 2 ist ein weiterer Bandförderer 3 angeordnet, der mittels einer Hubeinrichtung 4 in Richtung des Pfeiles C heb- und senkbar ist. Die Förderrichtung B des zweiten Bandförderers 3 verläuft parallel zur Förderrichtung A des ersten Bandförderers 2. In dieser Förderrichtung A gesehen hinter dem ersten Bandförderer 2 ist in einem Abstand ein Auflagetisch 5 mit einem Bandförderer 6 vorgesehen, der in der Höhe auf den ersten Bandförderer 2 ausgerichtet ist und der in entgegengesetzten Richtungen D und D' (Fig. 4 und 5) antreibbar ist. Der Auflagetisch 5 stützt sich auf einen Drehmechanismus 7 ab, welcher ein Drehen des Auflagetisches 5 um seine vertikal verlaufende Achse 5a ermöglicht. Oberhalb des Auflagetisches 5 ist ein weiterer Bandförderer 8 angeordnet, der in Richtung des Pfeiles E antreibbar ist und mittels einer Hubeinrichtung 9 in Richtung des Pfeiles F angehoben und abgesenkt werden kann. Dieser Bandförderer 8 befindet sich im wesentlichen auf derselben Höhe wie der vorgeschaltete Bandförderer 3. An der Auslaufseite der Einrichtung ist am Gestell 1 ein mit 10 bezeichneter Bandförderer abgestützt, der in Richtung des Pfeiles G angetrieben wird und der auf die Bandförderer 2 und 6 ausgerichtet ist. Diese drei Bandförderer 2, 6 und 10 legen die Bewegungsbahn des auf noch zu beschreibende Weise zu umwickelnden Gegenstandes fest.The wrapping device shown in FIGS. 1-5 has a frame 1 which carries the various components. On the inlet side of the device, a belt conveyor 2 is mounted in the frame 1, which can be driven in the direction of arrow A. A further belt conveyor 3 is arranged above this first belt conveyor 2 and can be raised and lowered in the direction of arrow C by means of a lifting device 4. The conveying direction B of the second belt conveyor 3 runs parallel to the conveying direction A of the first belt conveyor 2. Seen in this conveying direction A behind the first belt conveyor 2, a support table 5 is provided at a distance with a belt conveyor 6, the height of which is aligned with the first belt conveyor 2 and which can be driven in opposite directions D and D '(FIGS. 4 and 5). The support table 5 is supported on a rotary mechanism 7, which enables the support table 5 to be rotated about its vertical axis 5a. A further belt conveyor 8 is arranged above the support table 5, which can be driven in the direction of arrow E and can be raised and lowered in the direction of arrow F by means of a lifting device 9. This belt conveyor 8 is located essentially at the same height as the upstream belt conveyor 3. On the outlet side of the device, a belt conveyor designated by 10 is supported on the frame 1, which belt drive is driven in the direction of arrow G and which is aligned with the belt conveyors 2 and 6 . These three belt conveyors 2, 6 and 10 define the path of movement of the object to be wrapped in a manner to be described.

Oberhalb dieser Bewegungsbahn des zu umwickelnden Gegenstandes ist eine Vorratsrolle 11 gelagert, auf der eine Bahn 12 eines Umwickelmaterials aufgewickelt ist. Im vorliegenden Fall ist dieses Umwickelmaterial eine Kunststoffolie mit Selbsthafteigenschaften, z. B. eine Polyvinylidenchlorid-Folie, wie sie unter der Bezeichnung Saran im Handel erhältlich ist. Diese Folie 12 wird von der Vorratsrolle 11 über eine Führungsrolle 13 und eine Umlenkrolle 14 geführt. Wie insbesondere die Fig. 1 zeigt, verläuft der sich hinter dieser Umlenkrolle 14 befindliche Folienabschnitt 15 im wesentlichen in senkrechter Richtung, d. h. quer zur Bewegungsbahn des zu umwickelnden Gegenstandes. Dieser Folienabschnitt 15 ist im Bereich seines freien Endes 15a mittels einer ortsfest angeordneten Festhalteanordnung 16 freigebbar festgehalten. Diese Festhalteanordnung 16 weist eine oder mehrere in Richtung ihrer Längsachse verschiebbare Nadeln 16a auf, die in Wirkstellung den Folienabschnitt 15 durchstossen. Der Folienabschnitt 15 wird zwischen der Umlenkrolle 14 und der Festhalteanordnung 16 gespannt gehalten. An sich bezüglich der Drehachse 5a gegenüberliegenden Seiten des Auflagetisches 5 sind an diesem ebenfalls zwei Festhalteanordnungen 17 und 18 angebracht, die aufbaumässig der Festhalteanordnung 16 entsprechen und ebenfalls zwei oder mehr Nadeln 17a bzw. 18a aufweisen, die in Richtung ihrer Längsachse verschiebbar sind. In Fig. 1 sind diese Nadeln 17a, 18a in ihrer zurückgezogenen Ruhestellung dargestellt. Wie noch zu erläutern sein wird, liegt in jeder Ruhelage des Auflagetisches 5 eine der beiden Festhalteanordnungen 17 oder 18 der Festhalteanordnung 16 in einem Abstand gegenüber.Above this movement path of the object to be wrapped, a supply roll 11 is mounted, on which a web 12 of a wrapping material is wound. In the present case, this wrapping material is a plastic film with self-adhesive properties, e.g. B. a polyvinyli denchloride film, as it is commercially available under the name Saran. This film 12 is guided by the supply roll 11 via a guide roll 13 and a deflection roll 14. As shown in FIG. 1 in particular, the film section 15 located behind this deflection roller 14 runs essentially in a vertical direction, ie transversely to the movement path of the object to be wrapped. This film section 15 is held releasably in the region of its free end 15a by means of a stationary arrangement 16. This holding arrangement 16 has one or more needles 16a which can be displaced in the direction of its longitudinal axis and penetrate the film section 15 in the active position. The film section 15 is held tensioned between the deflection roller 14 and the retaining arrangement 16. On opposite sides of the support table 5 with respect to the axis of rotation 5a, two retaining arrangements 17 and 18 are also attached to the latter, which correspond to the retaining arrangement 16 in terms of construction and also have two or more needles 17a and 18a which can be displaced in the direction of their longitudinal axis. In Fig. 1 these needles 17a, 18a are shown in their retracted rest position. As will be explained later, in each rest position of the support table 5 one of the two holding arrangements 17 or 18 is opposite the holding arrangement 16 at a distance.

Unterhalb und zwischen den sich gegenüberliegenden Festhalteanordnungen 16 und 17 ist eine Trenneinrichtung 19 vorhanden, die ein in Richtung des Pfeiles H heb- und senkbares Trennmesser 19a aufweist. Im Zwischenraum zwischen den Bandförderern 2 und 6 sowie 3 und 8 und in Förderrichtung A gesehen hinter dem Folienabschnitt 15 sind zwei stabförmige Mitnehmerelemente 20 angeordnet, die an ihren Enden mit nur schematisch dargestellten Antriebselementen 21 verbunden sind. Letztere sind über Umlenkrollen 22 und 23 geführt, von denen die eine angetrieben ist. Die Mitnehmerelemente 20 bewegen sich in vertikaler Richtung zwischen einer obern Endstellung, die in den Fig. 1, 2, 4 und 5 gezeigt ist, und einer untern Endstellung (Fig. 3), in der sie sich unterhalb der beiden sich gegenüberliegenden Festhalteanordnungen 16 und 17 und benachbart zur Trenneinrichtung 19 befinden.Below and between the opposing holding arrangements 16 and 17 there is a separating device 19 which has a separating knife 19a which can be raised and lowered in the direction of the arrow H. In the space between the belt conveyors 2 and 6 and 3 and 8 and viewed in the direction of conveyance A, behind the film section 15, two rod-shaped driver elements 20 are arranged, which are connected at their ends to drive elements 21 which are only shown schematically. The latter are guided over deflection rollers 22 and 23, one of which is driven. The driver elements 20 move in the vertical direction between an upper end position, which is shown in FIGS. 1, 2, 4 and 5, and a lower end position (FIG. 3), in which they are below the two opposing retaining arrangements 16 and 17 and adjacent to the separator 19.

Mit 24 ist in den Fig. der zu umwickelnde Gegenstand bezeichnet, der im vorliegenden Fall ein Paket von aufeinanderliegenden Druckprodukten P ist.24 in the figures denotes the object to be wrapped, which in the present case is a packet of printed products P lying on top of one another.

Das Umwickeln des Druckproduktepaketes 24 läuft nun wie folgt ab :

  • Durch Heben und Senken des obern Bandförderers 3 auf der Einlaufseite in Richtung des Pfeiles C wird dieser Bandförderer 3 in der Höhe auf die Höhe des zu umwickelnden Paketes 24 eingestellt. Anschliessend wird dieses Paket 24 zwischen die Bandförderer 2 und 3 eingeführt. Durch leichtes Senken des Bandförderers 3 wird auf das Paket 24 ein Druck ausgeübt, durch den die Druckprodukte P zusammengepresst werden. Der Bandförderer 8 wird durch Verstellen in Richtung des Pfeiles F auf die Höhe des vorgeschaltenen Bandförderers 3 eingestellt. Durch die in Richtung der Pfeile A und B angetriebenen Bandförderer 2 und 3 wird nun das Paket 24 gegen den quer zu seiner Bewegungsbahn aufgespannten Folienabschnitt 15 bewegt. Nach dem Auftreffen der Vorderseite 24a des Paketes 24 auf dem Folienabschnitt 15 wird dieser mitgenommen. Im Zuge der Weiterbewegung des Paketes 24, während der das Paket 24 zwischen die Bandförderer 6 und 8 gelangt, legt sich ein in Fig. 2 mit 12' bezeichneter Folienabschnitt U-förmig an drei Seiten 24c, 24a und 24d des Paketes 24 an diesem an. Um ein solches Anlegen zu ermöglichen, wird in einem geeigneten Zeitpunkt das Folienende 15a durch die Festhalteanordnung 16 freigegeben, während von der Vorratsrolle 11 Folienmaterial abgezogen wird. Bei diesem Abziehen der Folie 12 wird dafür gesorgt, dass der Folienabschnitt 12' unter Spannung steht, so dass er sich satt an das Paket 24 anlegen kann.
The wrapping of the printed product package 24 now proceeds as follows:
  • By lifting and lowering the upper belt conveyor 3 on the inlet side in the direction of arrow C, this belt conveyor 3 is adjusted in height to the height of the package 24 to be wrapped. This package 24 is then introduced between the belt conveyors 2 and 3. By slightly lowering the belt conveyor 3, pressure is exerted on the package 24, by means of which the printed products P are pressed together. The belt conveyor 8 is adjusted by adjusting it in the direction of arrow F to the height of the upstream belt conveyor 3. By means of the belt conveyors 2 and 3 driven in the direction of the arrows A and B, the package 24 is now moved against the film section 15 spanned transversely to its movement path. After the front face 24a of the package 24 strikes the film section 15, the latter is taken along. In the course of the further movement of the parcel 24, during which the parcel 24 comes between the belt conveyors 6 and 8, a film section, designated 12 'in FIG . In order to enable such application, the film end 15a is released by the holding arrangement 16 at a suitable time, while film material is drawn off from the supply roll 11. When this film 12 is pulled off, it is ensured that the film section 12 ′ is under tension so that it can fit snugly against the package 24.

Hat das auf drei Seiten vom Folienabschnitt 12' umgebene Paket 24 seine in Fig. 2 gezeigte Stellung erreicht, so wird der Antrieb der Bandförderer 6 und 8 stillgesetzt. Nun werden die Mitnehmerelemente 20 aus ihrer obern Endstellung (Fig. 2) in ihre untere Endstellung (Fig. 3) bewegt. Wie aus Fig. 2 ersichtlich ist, befinden sich diese Mitnehmerelemente 20 in ihrer obern Endstellung oberhalb des auf der Oberseite 24d des Paketes 24 verlaufenden Folienabschnittes, so dass bei der Bewegung der Mitnehmerelemente 20 nach unten die Folie 12 mitgenommen wird. Dabei bildet sich bei gleichzeitiger Abwicklung der Folie 12 von der Vorratsspule 11 eine Schlaufe 25, wie das in Fig. 3 dargestellt ist. Die beiden diese Schlaufe 25 bildenden Folienabschnitte 15' und 26 werden im Bereich ihrer Enden durch die Festhalteanordnung 16 bzw. durch die Festhalteanordnung 17 festgehalten. Anschliessend werden diese beiden Folienabschnitte 15' und 26 mittels des Trennmessers 19a voneinander getrennt. Der zwischen der Umlenkrolle 14 und der Festhalteanordnung 16 aufgespannte Folienabschnitt 15' entspricht nun dem in Fig. 1 mit 15 bezeichneten Folienabschnitt. Der an der Hinterseite 24b des Paketes 24 verlaufende Folienabschnitt 26 ist um den mit 26a bezeichneten Endabschnitt länger als die Höhe des Paketes 24. Wie erwähnt, wird dieser Endabschnitt 26a durch die Festhalteanordnung 17 festgehalten.If the package 24 surrounded on three sides by the film section 12 'has reached its position shown in FIG. 2, the drive of the belt conveyors 6 and 8 is stopped. Now the driver elements 20 are moved from their upper end position (FIG. 2) to their lower end position (FIG. 3). As can be seen from FIG. 2, these driver elements 20 are in their upper end position above the film section running on the top 24d of the package 24, so that the film 12 is carried along when the driver elements 20 move downward. In this case, while the film 12 is being unwound from the supply reel 11, a loop 25 is formed, as shown in FIG. 3. The two film sections 15 'and 26 forming this loop 25 are held in the region of their ends by the holding arrangement 16 and by the holding arrangement 17, respectively. These two film sections 15 'and 26 are then separated from one another by means of the separating knife 19a. The film section 15 'stretched between the deflection roller 14 and the retaining arrangement 16 now corresponds to the film section designated by 15 in FIG. 1. The film section 26 running on the rear side 24b of the package 24 is longer than the height of the package 24 by the end section denoted by 26a. As mentioned, this end section 26a is held by the retaining arrangement 17.

Nach dem Trennen der beiden Folienabschnitte 15' und 26 werden die Mitnehmerelemente 20 wieder in ihre obere Endstellung bewegt. Wie aus Fig. 3 ersichtlich ist, ist in der Zwischenzeit auch der Bandförderer 3 wieder etwas angehoben worden, so dass die beiden Bandförderer 2 und 3 wieder zur Aufnahme eines neuen Paketes 24 bereit sind.After separating the two film sections 15 'and 26, the driver elements 20 are moved back into their upper end position. As can be seen from FIG. 3, in the meantime the belt conveyor 3 has also been raised again somewhat, so that the two belt conveyors 2 and 3 are again ready to receive a new package 24.

Wie die vorangehenden Ausführungen erkennen lassen, wird somit gleichzeitig mit dem Entlangführen des Folienabschnittes 26 an der Hinterseite 24b des Paketes erneut ein Folienvorhang 15' gespannt, der dazu bestimmt ist, sich auf die beschriebene Weise U-förmig um das nachfolgende Paket 24 zu legen.As can be seen from the preceding explanations, is thus at the same time as the film section 26 is guided along the The rear side 24b of the package is again stretched with a film curtain 15 'which is intended to wrap around the subsequent package 24 in a U-shape in the manner described.

In einem nächsten Schritt wird nach leichtem Anheben des Bandförderers 8 der Auflagetisch 5 durch den Drehmechanismus 7 um 180° um seine Achse 5a gedreht. In Fig. 4 ist der Auflagetisch 5 in seiner Stellung nach erfolgter Drehung dargestellt. In dieser Stellung wird der Bandförderer 8 wieder auf das Paket 24 abgesenkt. Nun werden die beiden Bandförderer 6 und 8 in Richtung des Pfeiles D' bzw. E angetrieben, wodurch das Paket 24 in Richtung dieser Pfeile D', E vorwärts gegen den auslaufseitigen Bandförderer 10 bewegt wird. Im Zuge dieser Bewegung legt sich der Folienabschnitt 26 an die vorlaufende Seite 24b des Paketes 24, welche ursprünglich die Hinterseite war, an, während der durch die Festhalteanordnung 17 freigegebene, überstehende Endabschnitt 26a dieses Folienabschnittes 26 gegen die Standfläche 24c des Paketes 24 umgelegt wird. Dieser umgelegte Endabschnitt 26a kommt dabei mit dem in Fig. 5 mit 12a" bezeichneten Folienabschnitt in Berührung, der beim U-förmigen Anlegen des Folienabschnittes 15 an diese Standfläche 24c angelegt wurde. Infolge der selbsthaftenden Eigenschaften der Umwickelfolie 12 gehen die beiden miteinander in Berührung stehenden Folienabschnitte 26a und 12a" eine zwar lösbare, jedoch haltende Verbindung ein. Da die beiden sich überlappenden Folienabschnitte 26a und 12a" durch das Gewicht des Paketes belastet sind, wird ein unbeabsichtigtes Lockern des das Paket 24 satt umschlingenden Folienabschnittes 12" (Fig. 5) verhindert. Während des Umschlingvorganges wird, wie erwähnt, das Paket 24 durch die Bandförderer 3 und 8 zusammengepresst. Sobald nun diese Presswirkung entfällt, findet eine Entspannung der Druckprodukte P statt, was zur Folge hat, dass die Höhe des Paketes 24 etwas grösser wird. Das hat nun zur Folge, dass sich der Folienabschnitt 12" noch satter an das Paket 24 anlegen kann.In a next step, after the belt conveyor 8 has been slightly raised, the support table 5 is rotated through its rotary mechanism 7 by 180 ° about its axis 5a. In Fig. 4 the support table 5 is shown in its position after rotation. In this position, the belt conveyor 8 is lowered onto the package 24 again. Now the two belt conveyors 6 and 8 are driven in the direction of the arrows D 'and E, whereby the package 24 is moved forward in the direction of these arrows D', E against the belt conveyor 10 on the outlet side. In the course of this movement, the film section 26 lies against the leading side 24b of the package 24, which was originally the rear side, while the protruding end section 26a of this film section 26 released by the retaining arrangement 17 is folded against the standing surface 24c of the package 24. This folded end section 26a comes into contact with the film section designated 12a "in FIG. 5, which was placed on this standing surface 24c when the film section 15 was applied in a U-shape. As a result of the self-adhesive properties of the wrapping film 12, the two come into contact with one another Foil sections 26a and 12a "a releasable but retaining connection. Since the two overlapping film sections 26a and 12a "are loaded by the weight of the package, unintentional loosening of the film section 12" wrapping around the package 24 is prevented (FIG. 5). As mentioned, the package 24 is pressed together by the belt conveyors 3 and 8 during the wrapping process. As soon as this pressing effect is no longer present, the printed products P are relaxed, which has the consequence that the height of the package 24 becomes somewhat larger. The result of this is that the film section 12 ″ can fit onto the package 24 even more securely.

Das mit dem Folienabschnitt 12" umwickelte Paket 24 wird nun durch den Bandförderer 10 einer Wegförderanlage übergeben, welche das Paket 24 zu einer Weiterverarbeitungsstelle bringt. Während dieses Weitertransportes können nun die durch den Folienabschnitt 12" umschlungenen Druckprodukte P nicht auseinanderfallen. Zudem sind diese Druckprodukte P durch diesen Folienabschnitt 12" geschützt. Bei Bedarf kann das fertige Paket 24 noch umschnürt werden.The package 24 wrapped with the film section 12 "is now transferred by the belt conveyor 10 to a removal conveyor which takes the package 24 to a further processing point. During this further transport, the printed products P wrapped in the film section 12" cannot fall apart. In addition, these printed products P are protected by this film section 12 ″. If required, the finished package 24 can still be tied up.

Die in den Fig. 6-15 gezeigte Ausführungsform entspricht sowohl aufbau - wie wirkungsmässig in vielen Teilen der Ausführungsform gemäss den Fig. 1-5. Aus diesem Grunde werden in den Fig. 6-15 für sich entsprechende Bauteile dieselben Bezugsziffern verwendet wie in den Fig. 1-5. Der Aufbau und die Wirkungsweise dieser zweiten Ausführungsform wird im folgenden nur hinsichtlich der Unterschiede zur ersten Ausführungsform beschrieben.The embodiment shown in FIGS. 6-15 corresponds both in terms of structure and effectiveness in many parts to the embodiment according to FIGS. 1-5. For this reason, the same reference numbers are used in FIGS. 6-15 for corresponding components as in FIGS. 1-5. The structure and the mode of operation of this second embodiment are described below only with regard to the differences from the first embodiment.

Im Gegensatz zur Ausführungsform gemäss den Fig. 1-5 ist bei dieser zweiten Ausführungsform der Auflagetisch 5 nicht drehbar, sondern mittels eines Hubmechanismus 27 in Richtung des Pfeiles I heb- und senkbar. Im weitern sind bei dieser Ausführungsform zwei U-förmige Stützelemente 28 und 29 vorhanden, die beidseits der Bewegungsbahn des Paketes 24 angeordnet sind (Fig. 13). Jedes dieser beiden Stützelemente 28 und 29 ist um eine parallel zur Bewegungsrichtung des Gegenstandes 24 verlaufende Achse 30 bzw. 31 schwenkbar und weist an seinem diesen. Achsen 30, 31 gegenüberliegenden Ende einen abgewinkelten Auflageteil 28a bzw. 29a auf. Wie die Fig. 13-15 zeigen, ist der Bandförderer 6 weniger breit als das Paket 24.In contrast to the embodiment according to FIGS. 1-5, in this second embodiment the support table 5 cannot be rotated but can be raised and lowered in the direction of arrow I by means of a lifting mechanism 27. Furthermore, in this embodiment, two U-shaped support elements 28 and 29 are provided, which are arranged on both sides of the movement path of the package 24 (FIG. 13). Each of these two support elements 28 and 29 is pivotable about an axis 30 and 31 running parallel to the direction of movement of the object 24 and points at it. Axes 30, 31 opposite end on an angled support part 28a and 29a. As shown in FIGS. 13-15, the belt conveyor 6 is less wide than the package 24.

Bei dieser zweiten Ausführungsform sind weiter zwei stabförmige Einschlagelemente 32 und 33 vorhanden, die sich quer zur Bewegungsbahn des Paketes 24 erstrecken und die an ihren Enden mit Antriebselementen 34, 34' verbunden sind. Letztere können auf nicht näher dargestellte Weise angetrieben werden, so dass die Einschlagelemente 32, 33 in Richtung des Pfeiles K entlang einer geschlossenen Umlaufbahn bewegt werden. In ihrer Ruhestellung liegen sich die Einschlagelemente 32 und 33 wie in den Fig. 6-8 und 10-12 gezeigt gegenüber.In this second embodiment, two rod-shaped turning elements 32 and 33 are also present, which extend transversely to the movement path of the package 24 and which are connected at their ends to drive elements 34, 34 '. The latter can be driven in a manner not shown, so that the turning elements 32, 33 are moved in the direction of arrow K along a closed orbit. In their rest position, the impact elements 32 and 33 lie opposite one another as shown in FIGS. 6-8 and 10-12.

Wie ein Vergleich der Fig. 6-8 mit den Fig. 1-3 zeigt, läuft der erste Schritt des Umwickelvorganges, nämlich das U-förmige Anlegen des Materialbahnabschnittes 15 an drei Seiten des Paketes 24, bei beiden Ausführungsformen genau gleich ab. Demgegenüber erfolgt das Unterschlagen des überstehenden Endabschnittes 26a des Folienabschnittes 26 unter das Paket 24 bei der zweiten Ausführungsform anders als bei der ersten Ausführungsform. Im folgenden wird nun dieses Unterschlagen des Endabschnittes 26a näher erläutert.As a comparison of FIGS. 6-8 with FIGS. 1-3 shows, the first step of the wrapping process, namely the U-shaped application of the material web section 15 on three sides of the package 24, is exactly the same in both embodiments. In contrast, the projecting end section 26a of the film section 26 is concealed under the package 24 in the second embodiment differently than in the first embodiment. This omission of the end section 26a is now explained in more detail below.

Wie aus den Fig. 7 und 13 hervorgeht, sind die Stützelemente 28 und 29 in ihrer Wartestellung vom Paket 24 weggeschwenkt. D. h., dass in dieser Wartestellung die Auflageteile 28a, 29a das Paket 24 nicht untergreifen. Während der Bildung der Schlaufe 25 werden nun die Stützelemente 28, 29 in ihre Wirkstellung verschwenkt, in der die Auflageteile 28a, 29a unterhalb des Paketes 24 zu liegen kommen. Sobald die beiden Folienabschnitte 15' und 26 mittels des Trennmessers 19a voneinander getrennt worden sind, wird der Auflagetisch 5 in Richtung des Pfeiles I (Fig. 9) abgesenkt. Dabei kommt das Paket 24 mit seiner Standfläche 24c auf den Auflageteil 28a, 29a der sich in ihrer Wirkstellung befindlichen Stützelemente 28, 29 zur Auflage. Zwischen dem Paket 24 und dem Auflagetisch 5, d. h. dem Bandförderer 6, wird auf diese Weise ein Zwischenraum 35 gebildet. Gleichzeitig werden die Einschlagelemente 32 und 33 in Richtung des Pfeiles K in Bewegung gesetzt. Wie die Fig. 9 zeigt, kommt dabei das Einschlagelement 32 auf den überstehenden Endabschnitt 26a des Folienabschnittes 26 zur Einwirkung. Während der Weiterbewegung dieses Einschlagelementes 32 durch den Zwischenraun 35 hindurch wird dieser überstehende Endabschnitt 26a, der in der Zwischenzeit von der Festhalteanordnung 17 freigegeben worden ist, unter das Paket 24 gelegt. Wie aus den Fig. 10 und 14 hervorgeht, kommen dabei die Auflageteile 28a, 29a der Stützelemente 28, 29 zwischen das Paket 24 und den untergeschlagenen Endabschnitt 26a zu liegen. Sobald das Einschlagelement 32 den Zwischenraum 35 verlassen hat, werden diese Einschlagelemente 32, 33 stillgesetzt. Das andere Einschlagelement 33 ist nun für das Unterschlagen des überstehenden Endabschnittes 26a beim nächsten Paket 24 bereit.7 and 13, the support elements 28 and 29 are pivoted away from the package 24 in their waiting position. This means that in this waiting position the support parts 28a, 29a do not engage under the package 24. During the formation of the loop 25, the support elements 28, 29 are now pivoted into their operative position, in which the support parts 28a, 29a come to rest below the package 24. As soon as the two film sections 15 'and 26 have been separated from one another by means of the separating knife 19a, the support table 5 is lowered in the direction of the arrow I (FIG. 9). Here, the package 24 comes to rest with its base 24c on the support part 28a, 29a of the support elements 28, 29 in their operative position. In this way, an intermediate space 35 is formed between the package 24 and the support table 5, ie the belt conveyor 6. At the same time, the impact elements 32 and 33 are set in motion in the direction of the arrow K. As shown in FIG. 9, the impact element 32 acts on the projecting end section 26a of the film section 26. While moving on of this impact element 32 through the intermediate space 35, this projecting end section 26a, which in the meantime has been released by the holding arrangement 17, is placed under the package 24. As can be seen from FIGS. 10 and 14, the support parts 28a, 29a of the support elements 28, 29 come to lie between the package 24 and the folded end section 26a. As soon as the impact element 32 has left the intermediate space 35, these impact elements 32, 33 are stopped. The other wrapping element 33 is now ready for embossing the protruding end section 26a in the next package 24.

Nun wird der Auflagetisch 5 mittels des Hubmechanismus 27 wieder angehoben, so dass das Paket 24 wieder auf dem Bandförderer 6 zur Auflage kommt (Fig. 11 und 15). Dabei werden die beiden sich überlappenden Enden 26a und 12a" des das Paket 24 umgebenden Folienabschnittes 12" aneinandergepresst. Durch Ausschwenken der Stützelemente 28 und 29 nach der Seite werden deren Auflageteile 28a, 29a unter dem Paket 24 weggezogen. Dieses Wegziehen der zwischen den Folienendabschnitten 26a und 12a" angeordneten Auflageteile 28a, 29a kann ohne Schwierigkeiten erfolgen, da, wie bereits erwähnt, die beiden Folienendabschnitte 26a und 12a" durch den Bandförderer 6, das Eigengewicht des Paketes 24 sowie die vom obenliegenden Bandförderer 8 ausgeübte Presskraft aneinander gehalten werden.Now the support table 5 is raised again by means of the lifting mechanism 27, so that the package 24 comes to rest on the belt conveyor 6 (FIGS. 11 and 15). The two overlapping ends 26a and 12a "of the film section 12" surrounding the package 24 are pressed together. By pivoting the support elements 28 and 29 to the side, their support parts 28a, 29a are pulled away from the package 24. This pulling away of the support parts 28a, 29a "arranged between the film end sections 26a and 12a" can be carried out without difficulty since, as already mentioned, the two film end sections 26a and 12a "by the belt conveyor 6, the dead weight of the package 24 and that exerted by the overhead belt conveyor 8 Press force are held together.

Durch Antreiben der Bandförderer 6 und 8 in Richtung des Pfeiles D bzw. E wird nun das fertig umwickelte Paket 24 dem auslasseitigen Bandförderer 10 übergeben, wie das in Fig. 12 dargestellt ist, die der Fig. 5 entspricht.By driving the belt conveyors 6 and 8 in the direction of the arrows D and E, the completely wrapped package 24 is then transferred to the outlet-side belt conveyor 10, as shown in FIG. 12, which corresponds to FIG. 5.

Die Ausführungsform gemäss den Fig. 6-15 hat gegenüber der Ausführungsform gemäss den Fig. 1-5 den Vorteil, dass durch den Wegfall einer Drehbewegung des Auflagetisches 5 der Umwicklungszyklus weniger Zeit in Anspruch nimmt, was eine höhere Arbeitsleistung ermöglicht.The embodiment according to FIGS. 6-15 has the advantage over the embodiment according to FIGS. 1-5 that the winding cycle takes less time due to the absence of a rotary movement of the support table 5, which enables a higher work output.

Es versteht sich, dass beide Ausführungsformen in verschiedenen Teilen anders als wie gezeigt und beschrieben ausgebildet werden können. So kann es beispielsweise zweckmässig sein, die Enden der Folienabschnitte 15' und 26a auf andere Weise als mit Nadeln 16a, 17a, 18a festzuhalten, beispielsweise mittels Unterdruck.It goes without saying that both embodiments can be designed in different parts differently than as shown and described. For example, it can be expedient to hold the ends of the film sections 15 'and 26a in a manner other than with needles 16a, 17a, 18a, for example by means of negative pressure.

Obwohl sich wegen ihrer selbsthaftenden Eigenschaften eine Polyvinylidenchlorid-Folie (Saran) als Umwickelmaterial besonders gut eignet, ist es selbstverständlich auch möglich, andere Materialien zu verwenden, d. h. z. B. neben andem Kunststoffolien auch Papierbahnen. Bei der Verwendung von derartigen Materialien wird es u. U. jedoch erforderlich sein, durch Kleben oder auf andere geeignete Weise dafür Sorge zu tragen, dass die sich überlappenden Endabschnitte 26a, 12a" miteinander verbunden sind.Although a polyvinylidene chloride film (Saran) is particularly suitable as a wrapping material because of its self-adhesive properties, it is of course also possible to use other materials, i. H. e.g. B. in addition to other plastic films also paper webs. When using such materials, it is u. However, it may be necessary to ensure by gluing or other suitable means that the overlapping end sections 26a, 12a "are connected to one another.

Es versteht sich, dass mit den beschriebenen Einrichtungen auch andere Gegenstände als Pakete aus aufeinanderliegen den Druckprodukten umwickelt werden können.It is understood that the described devices can also be used to wrap objects other than packages of printed products lying one on top of the other.

Claims (21)

1. A method of wrapping parallelepipedal compressible articles, in particular packets of superposed two-dimensional products, for example printed products, with a sheet-like wrapping material, in which in a first stage the article (24) to be wrapped is moved towards the sheet of wrapping material (12) extending transversely to its path of movement and in the course of the further movement of the article (24) the said sheet of material (12) is placed around the article (24) in a U shape and in a subsequent second stage while being unwound from a supply roll (11) the sheet of material (12) is guided along the rear side (24b) of the article (24) is viewed in the direction of movement (A) of the latter and at the same time as the sheet of material (12) is guided along the rear side (24b) of the article (24) a portion (15') of the sheet of material is again drawn transversely to the path of movement of the article (24), the portion (26) of the sheet of material guided along the rear side (24b) of the article (24) being made longer than the size of the article (24) in the longitudinal direction of this portion (26) of the sheet of material, while in a third stage the end portion (26a) of the last mentioned portion (26) of the sheet of material projecting beyond the article (24) is turned around towards the article (24), characterized in that during the wrapping the article (24) to be wrapped is compressed, the sheet of material (12) drawn off from the supply roll (11) to be clamped transversely to the path of movement of the article (24) is in each case secured in the region of its free end (15a) and released during the further movement of the article (24) which takes place during the first stage, and during the first stage the sheet of material (12) is held under tension and, lying on the upper side (24a) of the article (24), is placed on the latter.
2. A method according to Claim 1, characterized in that the supply roll (11) is disposed above the path of movement of the article (24).
3. A method according to Claim 1 or 2, characterized in that during the third stage the projecting end portion (26a) of the portion (26) of the sheet of material guided along the rear side (24b) of the article (24) is turned around towards one side (24c) of the article (24) adjacent the said rear side (24b), preferably towards the underside thereof.
4. A method according to any one of Claims 1 to 3, characterized in that during the second stage a loop (25) of the sheet of material is formed, the end of which lies on the other side of the path of movement of the article (24) from the supply roll (11) and one part of which is formed by the first portion (15') of the sheet of material extending transversely to the said path of movement and being connected to the supply roll (11) and the other part of which is formed by the second portion (26) of the sheet of material extending along the rear side (24b) of the article (24).
5. A method according to Claim 4, characterized in that the two portions (15', 26) of the sheet of material forming the parts of the loop are secured in the region of their ends (15a', 26) and are then separated from one another.
6. A method according to any one of Claims 3 to 5, characterized in that in the third stage the article (24) is turned through preferably 180° about an axis (5a) extending essentially perpendicularly to its previous direction of movement (A) and is then moved forward with its originally rear side (24b) to the fore, so that during this forward movement the projecting end portion (26a) of the portion (26) of the sheet of material present at the rear side (24b) of the article before the rotation is turned round towards the article (24).
7. A method according to any one of Claims 3 to 5, characterized in that in the third stage an interspace (35) is formed between the article (24) and a bearing surface (5) on which the underside (24c) of the article (24) rests, the projecting end portion (26a) of the portion (26) of the sheet of material extending along the rear side (24b) of the article (24) is subsequently wrapped around towards the underside (24c) of the article (24), and the article (24) is then supported again on the bearing surface (5).
8. A method according to any one of Claims 1 to 7, characterized in that a plastics foil (12) with adhesive properties, preferably a foil of polyvinylidene chloride, is used as the wrapping material.
9. An apparatus for wrapping parallelepipedal compressible articles, in particular packets of superposed two-dimensional products, for example printed products, with a sheet-like wrapping material, comprising a conveying device (2, 6, 10) for moving the article (24) to be wrapped along a path of movement, means (16 ; 11, 13, 14) for holding the sheet of wrapping material (12) in a direction extending transversely to the path of movement of the article (24), a bearing surface (5) - provided, as viewed in the direction of movement (A) of the article (24), behind the sheet of material (12) extending transversely to the direction of movement (A) of the article (24) - for the article (24) to be wrapped, and a device (20 to 23) for unwinding the sheet of material (12) from a supply roll (11) and guiding this sheet of material (12) along the rear side (24b) of the article (24) as viewed in the direction of movement (A) thereof after the sheet of material (12) has been turned around the article (24) in a U shape, the sheet of material (12) simultaneously clamping on the one hand a first portion (15') of the sheet of material transversely to the path of movement of the article (24) and forming on the other hand the second portion (26) of the sheet of material which extends along the rear side (24b) of the article (24) and the length of which is greater than the size of the article (24) in the longitudinal direction of the said second portion (26) of the sheet of material, the end portion (26a) of the said second portion (26) of the sheet of material which projects beyond the article (24) being turned round towards the article (24) during the movement of the article (24) onto the bearing surface (5), characterized by a pressing device (8) - disposed above the bearing surface (5) and forming with the latter a through duct for the articles (24) to be wrapped - for compressing the articles (24) while they are being wrapped, and a securing device (16) - opposite the supply roll (11) with respect to the path of movement of the articles (24) - for releasably securing the free end (15a) of the sheet of material (12) connected to the supply roll (11) and extending transversely to the direction of movement of the article (24).
10. An apparatus according to Claim 9, characterized in that the pressing device which preferably can be raised and lowered comprises conveying means (8) for moving the article (24) forwards.
11. An apparatus according to Claim 9, characterized in that the supply roll (11) is disposed above the path of movement of the article (24).
12. An apparatus according to any one of Claims 9 to 11, characterized in that the device for unwinding the sheet of material (20 to 23) from the supply roll (11) and for guiding this sheet of material (12) along the rear side (24b) of the article (24) forms a loop (25) of the sheet of material whose end lies of the other side of the path of movement of the article (24) from the supply roll (11) and part of which is formed by the first portion (15') of the sheet of material and the other part of which is formed by the second portion (26) of the sheet of material.
13. An apparatus according to Claim 12, characterized by a pulling apparatus (20) for the sheet of material (12) which extends in the manner of a U around the article (24) and with respect to the supply roll (11) and which in order to form the loop (25) of the sheet of material when acting upon the sheet of material (12) is movable from a first position transverse to the path of movement of the article (24) into a second position which is opposite the first position with respect to the path of movement of the article (24) and which is disposed preferably below the said path of movement.
14. An apparatus according to Claim 12 or 13, characterized in that a second securing device (17, 18) is provided for releasably securing the second portion (26) of the sheet of material in the region of the free end (26a) thereof and a separating device (19) is provided for separating the two portions (15', 26) of the sheet of material forming the said loop (25) of the sheet of material.
15. An apparatus according to any one of Claims 9 to 14, characterized in that the bearing surface (5) can be turned through preferably 180° about an axis (5a) extending at right angles to the conveying direction (A) of the conveying device (2), and conveying means (6) are provided for moving the article (24) with its originally rear side (24b) to the fore, in order to turn round the projecting end portion (26a) of the second portion (26) of the sheet of material towards the underside (24c) of the article (24), the bearing surface (5) preferably being constructed in the form of a belt conveyor (6).
16. An apparatus according to Claims 14 and 15, characterized in that the second securing device (17, 18) is connected in a co-rotating manner to the bearing surface (5).
17. An apparatus according to any one of Claims 9 to 14, characterized by a bearing surface (5) which can be raised and lowered, a support device (28, 29) for momentarily supporting the article (24) during the lowering of the bearing surface (5) and by wrapping means (32, 33) for wrapping the projecting end portion (26a) of the second portion (26) of the sheet of material towards the underside (24c) of the article (24) lifted off the bearing surface (5), the bearing surface (5) preferably being constructed in the form of a belt conveyor (6).
18. An apparatus according to Claims 14 and 17, characterized in that the second securing device (17) is connected to the bearing surface (5).
19. An apparatus according to Claim 17 or 18, characterized in that the support device comprises two support elements (28, 29) which are opposite one another with respect to the article (24) and which are movable from a rest position into an operative position in which they engage under the article (24).
20. An apparatus according to any one of Claims 17 to 19, characterized in that the wrapping means comprise at least one wrapping element (32, 33) which can be moved - while the end portion (26a) of the second portion (26) of the sheet of material is being pulled - through the interspace (35) formed between the article (24) supported by the support device (28, 29) and the lowered bearing surface (5).
21. An apparatus according to any one of Claims 9 to 20, characterized in that the wrapping material is a plastics foil (12) with adhesive properties, preferably a foil of polyvinylidene chloride.
EP84101408A 1983-03-22 1984-02-11 Method and device for enveloping preferably quadrangular objects with a tape-like enveloping material Expired EP0120251B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84101408T ATE28161T1 (en) 1983-03-22 1984-02-11 METHOD AND DEVICE FOR WRAPPING PREFERABLY CUBOID-SHAPED OBJECTS WITH A WEB-SHAPED WRAPPING MATERIAL.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1543/83 1983-03-22
CH154383 1983-03-22

Publications (2)

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EP0120251A1 EP0120251A1 (en) 1984-10-03
EP0120251B1 true EP0120251B1 (en) 1987-07-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP84101408A Expired EP0120251B1 (en) 1983-03-22 1984-02-11 Method and device for enveloping preferably quadrangular objects with a tape-like enveloping material

Country Status (9)

Country Link
US (1) US4738078A (en)
EP (1) EP0120251B1 (en)
JP (2) JPH0659883B2 (en)
AT (1) ATE28161T1 (en)
AU (1) AU567151B2 (en)
CA (1) CA1262679A (en)
DE (1) DE3464574D1 (en)
FI (1) FI76979C (en)
SU (1) SU1623561A3 (en)

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EP1848638A4 (en) * 2005-01-24 2012-03-21 Pukero Engineering Oy Method and device for preparing a grand bale of pulp sheet and corresponding grand bale

Also Published As

Publication number Publication date
CA1262679A (en) 1989-11-07
SU1623561A3 (en) 1991-01-23
FI841135A (en) 1984-09-23
FI76979C (en) 1989-01-10
JPH0659883B2 (en) 1994-08-10
FI76979B (en) 1988-09-30
US4738078A (en) 1988-04-19
JPS59187510A (en) 1984-10-24
JPH0759406B2 (en) 1995-06-28
FI841135A0 (en) 1984-03-21
DE3464574D1 (en) 1987-08-13
AU2586084A (en) 1984-09-27
EP0120251A1 (en) 1984-10-03
ATE28161T1 (en) 1987-07-15
JPH0692310A (en) 1994-04-05
AU567151B2 (en) 1987-11-12

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