EP0564971B1 - Device and method for making a stack of articles - Google Patents

Device and method for making a stack of articles Download PDF

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Publication number
EP0564971B1
EP0564971B1 EP93105325A EP93105325A EP0564971B1 EP 0564971 B1 EP0564971 B1 EP 0564971B1 EP 93105325 A EP93105325 A EP 93105325A EP 93105325 A EP93105325 A EP 93105325A EP 0564971 B1 EP0564971 B1 EP 0564971B1
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EP
European Patent Office
Prior art keywords
spreading
rollers
stack
cover
finger
Prior art date
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Expired - Lifetime
Application number
EP93105325A
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German (de)
French (fr)
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EP0564971A2 (en
EP0564971A3 (en
Inventor
Richard Birkenfeld
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Maschinenfabrik Moellers GmbH
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Maschinenfabrik Moellers GmbH
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Application filed by Maschinenfabrik Moellers GmbH filed Critical Maschinenfabrik Moellers GmbH
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Publication of EP0564971A3 publication Critical patent/EP0564971A3/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/13Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the preformed tubular webs being supplied in a flattened state
    • B65B9/135Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the preformed tubular webs being supplied in a flattened state for palletised loads

Definitions

  • the invention relates to a device according to the preamble of patent claim 1.
  • Such an apparatus and such a method are used by the applicant.
  • Such a device already has advantages over similar devices (e.g. EP 0 344 815 A1), since this device is particularly compact due to the design of its spreading fingers and the associated drive rollers and can also be adapted to different stack sizes in a relatively simple manner.
  • the known device does not yet function properly when the hood edges are folded like a bellows before being pulled over, and especially when pulled apart during pulling over.
  • the side edges are folded like a bellows, there can be uncontrolled overlaps of the side edges of the hood in the area of the outer surfaces of the spreading fingers, which, when pulled over or pulled apart, and in particular also with additional vertical stresses during the pulling over of the hood over the stack of goods, leads to the hood tears in particular in the corner areas, so that no perfect packaging can be formed. This is due to different stretching forces in the hood as well attributed to the overlap of the folded edge areas.
  • a generic device which should also be suitable for use with stretch film hoods.
  • this device has no spreading fingers, but rather beam-shaped elements which extend essentially over the entire length or width of the stack to be formed, which receive the film tube and enable the hood formed from this film tube to be pulled over the stack.
  • a roll is provided on the beam-shaped elements, which is arranged approximately at the same height as a horizontally movable drive roller, with the threading or bellows-like folding being carried out by means of these two rollers of the film tube on the beam-shaped elements is to be facilitated.
  • the object of the invention is to provide a solution with which a perfect wrapping of the stack of goods with a stretch film hood is made possible, in addition to a simple adaptation to different basic stack sizes of the stack should be possible.
  • each spreading finger is provided with a recess in which two rollers arranged one above the other, which are arranged symmetrically to a horizontal plane containing the axis of rotation of the drive wheel, are rotatably mounted, the rollers protrude in areas on the side facing the hood and the drive wheel opposite the spreading finger surface and the drive wheel is in contact with the rollers in an inwardly moved position with the interposition of the film hood, the spreading finger surface being bent inwards at the lower edge of the recess.
  • the design of the spreading fingers ensures that the drive wheels are in flat contact with the respective hood surface during bellows-like folding of the side edges of the hood and also in the event of any rotational movement when the hood is pulled over the stack, so that uneven stretching and in particular also one Overlapping of the folded edges is reliably avoided.
  • the hood is inevitably guided by the design and arrangement of the rollers on the spreading fingers so that a corresponding flat contact with the respective drive roller is guaranteed. As a result, it is also possible to reliably avoid overstretching of film hood areas, so that perfect, uniform stretching is ensured.
  • the invention also advantageously provides that at least two rollers are arranged side by side in the recess. This makes it possible to provide a correspondingly larger contact surface for the film hood.
  • a support element is arranged on the respective vertically movable carriage, which carries the drive wheel and the spreading finger and which can be displaced at right angles to the radial deflection direction of the spreading finger.
  • the support element is additionally displaceable along the carriage. This is an even better adaptation to different stack sizes possible without increasing the space requirement of the device.
  • the same reference numerals for are used throughout the figures same parts used.
  • the device is initially shown in general form in FIG. 1, to which reference is first made.
  • a stack of goods 3 conveyed by the latter is arranged on a carriageway 2 within a device frame 1.
  • a roller 4 is mounted on which a plastic tube 5 made of stretchable material is wound with side gussets.
  • Stretchable material is understood to mean one that returns to the state it was in before stretching.
  • the hose 5 with the folded-in side edges on the roller 4 is fed via deflection rollers 6 and drive rollers 7 to a threading device which consists of the area of the folded tube edges of vertically movably arranged guide elements 8, below which a separating device 9 and a welding device 10 are arranged.
  • two roof-shaped double conveyor belts 11 are arranged on both sides of the frame, the upper receiving ends being located directly below the guide elements 8 in their lowered position.
  • a pivot lever 18 is assigned to each double conveyor belt 11.
  • Each swivel lever 18 lies somewhat inward of the associated double conveyor belt 11, as seen in plan view.
  • each spreading finger 13 is adjustable in the longitudinal and transverse directions to adapt to different dimensions of the stack 3, a corresponding drive device is shown generally in FIG. 1 and designated by 15.
  • a drive roller 16 is assigned on the outside, which in FIG. 1 can be moved in a manner not shown in the direction of the spreading finger 13 into the active position shown in FIGS. 2, 9 and 11 and from this in FIGS. 1, 7 , 8 and 11 reproduced ineffective position can be moved radially outwards.
  • each spreading finger 13 is provided in its vertical web 13a, on which the tubular film is guided, with a recess 19 in which two rollers 20, 20a arranged one above the other are rotatably mounted.
  • the rollers 20, 20a stand up in some areas the side facing the tubular film hood and the drive wheel 16 opposite the vertical surface 13a of the spreading finger 13.
  • the rollers 20, 20a are arranged one above the other in such a way that there is a small distance between them, which is denoted by 21, such that the rollers 20, 20a are not in contact with one another.
  • rollers 20 or 20a are arranged side by side in the recess 19, or a correspondingly wider roller can also be used in each case.
  • the spreading finger surface 13a is advantageously bent inwards in some areas at the lower edge of the recess 19 (FIG. 5).
  • the arrangement of the rollers 20, 20a is preferably such that the rollers are arranged symmetrically to a horizontal plane containing the axis of rotation 22 of the drive wheel 16. This has the advantage that when the drive wheel 16 is moved radially inwards, the drive wheel is centered by the rollers 20, 20a and evenly comes into contact with the rollers 20, 20a or touches the area between the stretch film tube.
  • the inventive design of the adjustability of the spreading fingers 13 and drive wheels 16 is in FIGS. 2 and 3 shown.
  • the drive wheel 16, which is provided with a drive motor 23, is arranged on a support arm 24 which enables a radial movement in the direction of the arrow 26 via a piston / cylinder unit 25, ie radially to the associated spreading finger 13 or away from it.
  • the support arm 24 with the piston / cylinder unit 25 is arranged on a support element 27 on which the relevant spreading finger 13 is also arranged, which is movable in the radial direction (arrow 28) relative to the support element 27.
  • a spindle drive 29a is arranged on the support element 27, which enables the spreading finger 13 to be extended in the radial direction.
  • a piston / cylinder unit 29 is arranged on the support element 27 itself, which in turn is fastened to a fastening element 30 which is connected to a piston / cylinder unit 31 which is fixed to the slide 12 at the other end.
  • This configuration enables the following movements: First, the carriage 12 can be moved vertically in the frame 1 in the vertical direction, furthermore a displacement in the direction of the arrow 32 of the fastening element 30 is possible and thus also the spreading finger 13 and the drive wheel 16 .
  • the flat-lying stretch film tube 5 is threaded through the drive rollers 7 via the guide elements 8, which are found when the machine is started in the lowered position.
  • each folded edge of the hose is passed between a double conveyor belt 11, which causes the hose to be opened (FIG. 6).
  • the drive of the drive rollers 7 and the double conveyor belts 11 are stopped and the spreading fingers 13 are inserted into the lower end of the hose. After retraction, the spreading fingers 13 are stopped, so that the tube wraps around the spreading fingers 13 at its four corners.
  • the drive rollers 16 are moved to the spreading fingers 13 and put into operation, namely together with the drive rollers 7 and the double conveyor belts 11, until the length of the stack 3 corresponding to the length of the hose around the spreading fingers 13 has been placed in bellows-like waves are.
  • proper folding is achieved in that the drive wheels 16 lie flat against the tubular film 5 by the rollers 20, 20a on the spreading fingers 13.
  • the drive rollers 7, the double conveyor belts 11 and the drive rollers 16 are then stopped again (FIG. 7).
  • the separating and welding devices 9 and 10 are actuated.
  • the double conveyor belts 11 are actuated again and, at the same time, the pivot levers 18 are pivoted downward, as a result of which the folded tubular wheels are pressed or pulled out of the receiving ends of the double conveyor belts.
  • the spreading fingers 13 are moved into the stretching position shown in FIG. 1 and the drive rollers 16 are moved radially outwards.
  • the material stack 3 is raised beyond the carriageway 2 and the chains, not shown, are driven in such a way that the carriage 12 with the spreading fingers 13 coupled therewith and on this in The stretching position of the hose 5 of the hood 17 located in waves can be moved downwards along the stack.
  • the upper closed end of the hood 17 formed by the welding lies on the surface of the stack 3, so that when the corrugated hood 17 is pulled over further Wave after wave winds up and, according to their release from the stretching position, rests against the side surface of the stack 3 (see FIG. 8). This ensures that the rollers 20, 20a pull the spreading fingers 13 properly.
  • the drive wheels 16 can be moved to the spreading fingers 13 and put into operation during the pulling-over, in such a way that the film hood is stretched in the vertical direction by a corresponding relative movement.
  • the drive rollers 16 In the lower region of the stack, the drive rollers 16 then remain in their contact position, being driven or stopped in order to bring about a certain clamping of the hood 17 between the drive rollers 16 and spreading fingers 13.
  • the downward speed of the carriages 12 is then increased in the lower region of the stack of goods, in particular when the carriages 12 are in the region of the lower corner edges of the stack of goods (FIG. 9).
  • the spreading fingers 13 are possibly moved radially inwards with the drive rollers 16, and indeed at a greater speed than the downward speed of the slides 12 in the lower region of the stack of goods. Then be the drive rollers 16 and the spreader rods 13 are moved radially outward, so that the hood 17 is also released in its open edge area located below the stack 3. Due to the restoring force of the stretch film hood 17, this is kicked around the lower edge surface of the base of the stack 3 in such a way that a good connection of the base of the stack 3 with the objects stacked on it is ensured.
  • the increased speed of the downward movement of the carriage 12 in the lower stack area and the even greater inward movement of the spreading fingers 13 under the stack ensure that the hood 17 remains below the stack of goods 2 and does not slip beyond the lower corner edges into the side area.
  • the coated stack of goods 3 can then be moved out of the frame 1 after being lowered onto the carriageway 2 and a new stack of goods can be inserted, whereupon the process sequence begins again.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pile Receivers (AREA)
  • Making Paper Articles (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Basic Packing Technique (AREA)
  • Stacking Of Articles And Auxiliary Devices (AREA)

Abstract

A device for forming a stack of articles by means of stretch foil, with a cover drawing-over device having at least four spreading fingers movable in the horizontal and vertical direction, is to provide a solution by which a perfect wrapping of the stack of articles with a stretch-foil cover becomes possible, whilst, in one embodiment, an adaptation to different base sizes of stacks of articles is additionally also to be possible. This is achieved in that each spreading finger (13) is provided with a recess (19), in which two rollers (20,20a) arranged one above the other are mounted rotatably, the rollers (20,20a) projecting in regions relative to the spreading-finger surface (13a) on the side facing the cover (17) and the driving wheel (16), and the driving wheel (16) being in contact with the rollers (20,20a), with the foil cover (17) interposed, in a position moved radially inwards. <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a device according to the preamble of patent claim 1.

Eine solche Vorrichtung und ein solches Verfahren wird von der Anmelderin benutzt. Eine solche Vorrichtung weist zwar gegenüber ähnlichen Vorrichtungen (z.B. EP 0 344 815 A1) bereits Vorteile auf, da diese Vorrichtung aufgrund der Ausbildung ihrer Spreizfinger und der zugeordneten Antriebsrollen besonders kompakt ausgebildet ist und außerdem auf relativ einfache Weise an unterschiedliche Gutstapelgrößen angepaßt werden kann.Such an apparatus and such a method are used by the applicant. Such a device already has advantages over similar devices (e.g. EP 0 344 815 A1), since this device is particularly compact due to the design of its spreading fingers and the associated drive rollers and can also be adapted to different stack sizes in a relatively simple manner.

Es hat sich jedoch herausgestellt, daß die bekannte Vorrichtung beim faltenbalgartigen Zusammenlegen der Haubenränder vor dem Überziehen und insbesondere beim Auseinanderziehen während des Überziehens noch nicht einwandfrei arbeitet. Beim faltenbalgartigen Zusammenlegen der Seitenränder kann es nämlich zu unkontrollierten Überlappungen der Haubenseitenränder im Bereich der äußeren Flächen der Spreizfinger kommen, was beim Überziehen bzw. dadurch verursachten Auseinanderziehen und insbesondere auch bei zusätzlichen Vertikalspannungen während des Überziehens der Haube über den Gutstapel dazu führt, daß die Haube insbesondere in den Eckbereichen reißt, so daß keine einwandfreie Verpackung gebildet werden kann. Dies ist sowohl auf unterschiedliche Streckkräfte in der Haube als auch auf die Überlappung der zusammengefalteten Randbereiche zurückzuführen.It has been found, however, that the known device does not yet function properly when the hood edges are folded like a bellows before being pulled over, and especially when pulled apart during pulling over. When the side edges are folded like a bellows, there can be uncontrolled overlaps of the side edges of the hood in the area of the outer surfaces of the spreading fingers, which, when pulled over or pulled apart, and in particular also with additional vertical stresses during the pulling over of the hood over the stack of goods, leads to the hood tears in particular in the corner areas, so that no perfect packaging can be formed. This is due to different stretching forces in the hood as well attributed to the overlap of the folded edge areas.

Darüber hinaus ist bei der bekannten Vorrichtung von Nachteil, daß eine Anpassung an unterschiedliche Gutstapelgrundflächengrößen nur aufwendig möglich ist, da dazu eine manuelle Einstellung der entsprechenden Elemente notwendig ist.In addition, it is disadvantageous in the known device that an adaptation to different good stack base sizes is only possible in a complex manner, since manual adjustment of the corresponding elements is necessary for this.

Aus FR-A-2,230,549 ist eine gattungsähnliche Vorrichtung bekannt, die auch zum Einsatz bei Stretchfolienhauben geeignet sein soll. Diese Vorrichtung weist jedoch keine Spreizfinger auf, sondern sich im wesentlichen über der gesamten Länge bzw. Breite des zu bildenden Stapels erstreckende balkenförmige Elemente, welche den Folienschlauch aufnehmen und ein Überziehen der aus diesem Folienschlauch gebildeten Haube über den Stapel ermöglichen. Dabei ist bei einer Ausführungsform zum Auffädeln und faltenbalgartigen Zusammenlegen des Folienschlauches auf diese balkenförmigen Elemente an den balkenförmigen Elementen jeweils eine Rolle vorgesehen, die in etwa in derselben Höhe angeordnet ist wie eine horizontal verfahrbare Antriebsrolle, wobei mittels dieser beiden Rollen das Auffädeln bzw. faltenbalgartige Zusammenlegen des Folienschlauches auf die balkenförmigen Elemente erleichtert werden soll. Die Spannungsverhältnisse in der Folienhaube bei derartigen balkenförmigen, sich über der ganzen Länge des Stapels erstreckenden, die Haube aufnehmenden Elementen und demgegenüber bei sich nur in den Eckbereichen befindenden Spreizfingern bei gattungsgemäßen Vorrichtungen sind jedoch völlig unterschiedlich und von daher nicht miteinander vergleichbar.From FR-A-2,230,549 a generic device is known which should also be suitable for use with stretch film hoods. However, this device has no spreading fingers, but rather beam-shaped elements which extend essentially over the entire length or width of the stack to be formed, which receive the film tube and enable the hood formed from this film tube to be pulled over the stack. In one embodiment, for each threading and bellows-like folding of the film tube onto these beam-shaped elements, a roll is provided on the beam-shaped elements, which is arranged approximately at the same height as a horizontally movable drive roller, with the threading or bellows-like folding being carried out by means of these two rollers of the film tube on the beam-shaped elements is to be facilitated. The tension in the film hood at such bar-shaped, extending over the entire length of the stack, the hood-receiving elements and, in contrast, with spreading fingers located only in the corner areas in generic devices, however, are completely different and are therefore not comparable with one another.

Aufgabe der Erfindung ist die Schaffung einer Lösung, mit der eine einwandfreie Umhüllung des Gutstapels mit einer Stretchfolienhaube ermöglicht wird, wobei in Ausgestaltung zusätzlich auch eine einfache Anpassung an unterschiedliche Gutstapelgrundflächengrößen möglich sein soll.The object of the invention is to provide a solution with which a perfect wrapping of the stack of goods with a stretch film hood is made possible, in addition to a simple adaptation to different basic stack sizes of the stack should be possible.

Diese Aufgabe wird mit einer Vorrichtung der eingangs bezeichneten Art erfindungsgemäß dadurch gelöst, daß jeder Spreizfinger mit einer Aussparung versehen ist, in der zwei übereinander angeordnete Rollen, die symmetrisch zu einer die Drehachse des Antriebsrades enthaltenden Horizontalebene angeordnet sind, drehbar gelagert sind, wobei die Rollen bereichsweise auf der der Haube und dem Antriebsrad zugewandten Seite gegenüber der Spreizfingerfläche hervorstehen und das Antriebsrad in nach innen verfahrener Position mit den Rollen unter Zwischenschaltung der Folienhaube in Kontakt steht, wobei am unteren Rand der Aussparung die Spreizfingerfläche nach innen abgekantet ist.This object is achieved according to the invention with a device of the type mentioned in the introduction in that each spreading finger is provided with a recess in which two rollers arranged one above the other, which are arranged symmetrically to a horizontal plane containing the axis of rotation of the drive wheel, are rotatably mounted, the rollers protrude in areas on the side facing the hood and the drive wheel opposite the spreading finger surface and the drive wheel is in contact with the rollers in an inwardly moved position with the interposition of the film hood, the spreading finger surface being bent inwards at the lower edge of the recess.

Mit dieser Vorrichtung ist es möglich, einen Gutstapel einwandfrei mit einer Stretchfolienhaube zu verpacken, ohne daß es beim Verpackungsvorgang zu Beschädigungen der Folienhaube kommt. Durch die Ausgestaltung der Spreizfinger ist nämlich gewährleistet, daß die Antriebsräder beim faltenbalgartigen Zusammenlegen der Seitenränder der Haube und auch bei etwaiger Drehbewegung während des Überziehens der Haube über den Stapel in flächigem Kontakt mit der jeweiligen Haubenfläche stehen, so daß eine ungleichmäßige Stretchung und insbesondere auch eine Überlappung der in Falten gelegten Ränder zuverlässig vermieden wird. Die Haube wird nämlich durch die Ausbildung und Anordnung der Rollen an den Spreizfingern zwangsläufig so geführt, daß ein entsprechender flächiger Kontakt mit der jeweiligen Antriebsrolle gewährleistet ist. Es kann dadurch zuverlässig auch eine Überstretchung von Folienhaubenbereichen vermieden werden, so daß eine einwandfreie gleichmäßige Stretchung gewährleistet ist. Darüber hinaus ist zudem beim Abziehen der Haubenseitenränder von den Spreizfingern ein einwandfreies ungehindertes Abgleiten möglich, wenn die jeweiligen Antriebsräder außer Eingriff mit den Spreizfingern sind. Aufgrund der Anordnung der Rollen ist zuverlässig gewährleistet, daß beim radialen Nachinnenverfahren des Antriebsrades in Richtung zum jeweiligen Spreizfinger automatisch eine entsprechende Zentrierung des Antriebsrades erfolgt, d.h. dieses wird automatisch entsprechend symmetrisch zu den beiden Rollen des betreffenden Spreizfingers angeordnet, so daß ein einwandfreier Kontakt und damit eine flächige Anlage des Folienschlauchrandes gewährleistet ist. Ein Einklemmen des Folienschlauches wird durch die Gestaltung der Spreizfinger zuverlässig verhindert.With this device it is possible to properly pack a stack of goods with a stretch film hood without causing damage to the film hood during the packaging process. The design of the spreading fingers ensures that the drive wheels are in flat contact with the respective hood surface during bellows-like folding of the side edges of the hood and also in the event of any rotational movement when the hood is pulled over the stack, so that uneven stretching and in particular also one Overlapping of the folded edges is reliably avoided. The hood is inevitably guided by the design and arrangement of the rollers on the spreading fingers so that a corresponding flat contact with the respective drive roller is guaranteed. As a result, it is also possible to reliably avoid overstretching of film hood areas, so that perfect, uniform stretching is ensured. In addition, when pulling off the hood side edges from the spreading fingers, it is possible to slide smoothly without hindrance if the respective drive wheels are out of engagement with the spreading fingers. Due to the arrangement of the rollers, it is reliably ensured that when the drive wheel is moved radially inwards in the direction of the respective spreading finger, the drive wheel is appropriately centered, ie this is automatically correspondingly symmetrical arranged to the two roles of the spreading finger in question, so that a perfect contact and thus a flat contact of the film tube edge is guaranteed. The design of the spreading fingers reliably prevents the film tube from being pinched.

Vorteilhaft sieht die Erfindung auch vor, daß jeweils wenigstens zwei Rollen nebeneinander in die Aussparung angeordnet sind. Es ist dadurch möglich, eine entsprechend noch größere Anlagefläche für die Folienhaube zur Verfügung zu stellen.The invention also advantageously provides that at least two rollers are arranged side by side in the recess. This makes it possible to provide a correspondingly larger contact surface for the film hood.

In besonders vorteilhafter Ausgestaltung der Erfindung ist vorgesehen, daß am jeweiligen vertikal beweglichen Schlitten ein Tragelement angeordnet ist, das das Antriebsrad und den Spreizfinger trägt und das rechtwinklig zur radialen Auslenkrichtung der Spreizfinger verschiebbar ist. Durch diese zusätzliche Ausgestaltung ist es möglich, die Vorrichtung auf einfachste Weise auch an unterschiedliche Gutstapelgrundflächengrößen anzupassen, wobei die entsprechende Verstellung dann automatisch durch die Steuerung der Vorrichtung erfolgt.In a particularly advantageous embodiment of the invention it is provided that a support element is arranged on the respective vertically movable carriage, which carries the drive wheel and the spreading finger and which can be displaced at right angles to the radial deflection direction of the spreading finger. This additional configuration makes it possible to adapt the device in a very simple manner to different good stack base sizes, the corresponding adjustment then being carried out automatically by the control of the device.

Vorteilhaft ist auch vorgesehen, daß das Tragelement zusätzlich entlang des Schlittens verschiebbar ist. Dadurch ist eine noch bessere Anpassung an unterschiedliche Gutstapelgrößen möglich, ohne den Raumbedarf der Vorrichtung zu vergrößern.It is also advantageously provided that the support element is additionally displaceable along the carriage. This is an even better adaptation to different stack sizes possible without increasing the space requirement of the device.

Die Erfindung ist nachstehend anhand der Zeichnung bei spielsweise näher erläutert. Diese zeigt in:

Fig. 1
in vereinfachter Seitenansicht eine erfindungsgemäße Vorrichtung,
Fig. 2
in Draufsicht einen Eckbereich einer Vorrichtung mit Spreizfinger und Antriebsrad,
Fig. 3
eine Seitenansicht der Fig. 2 in Richtung des Pfeiles 33,
Fig. 4
einen Schnitt durch einen Spreizfinger nach Fig. 3,
Fig. 5
ein vergrößertes Detail des Spreizfingers nach Fig. 4 und in den
Fig. 6 bis 11
jeweils in vereinfachter Seitenansicht eine Vorrichtung nach Fig. 1 in verschiedenen Verfahrensstadien.
The invention is explained below with reference to the drawing, for example. This shows in:
Fig. 1
a simplified side view of a device according to the invention,
Fig. 2
in plan view a corner area of a device with a spreading finger and drive wheel,
Fig. 3
2 in the direction of arrow 33,
Fig. 4
4 shows a section through an expanding finger according to FIG. 3,
Fig. 5
an enlarged detail of the spreading finger according to FIG. 4 and in the
6 to 11
each in a simplified side view of a device according to FIG. 1 in different stages of the process.

In den Figuren sind durchgängig dieselben Bezugszeichen für gleiche Teile verwandt. Die Vorrichtung ist zunächst in allgemeiner Form in Fig. 1 dargestellt, auf die zunächst Bezug genommen wird.The same reference numerals for are used throughout the figures same parts used. The device is initially shown in general form in FIG. 1, to which reference is first made.

Innerhalb eines Vorrichtungsgestells 1 ist auf einer Fahrbahn 2 ein von dieser angeförderter Gutstapel 3 angeordnet.A stack of goods 3 conveyed by the latter is arranged on a carriageway 2 within a device frame 1.

Im Gestell 1 ist eine Rolle 4 gelagert, auf der ein Kunststoff-Schlauch 5 aus stretchfähigem Material mit Seitenfalten aufgewickelt ist. Unter stretchfähigem Material wird ein solches verstanden, das nach Reckung in seinen vor der Reckung eingenommenen Zustand zurückkehrt. Der mit eingefalteten Seitenrändern auf der Rolle 4 befindliche Schlauch 5 wird über Umlenkrollen 6 und Antriebsrollen 7 einer Einfädeleinrichtung zugeführt, die aus dem Bereich der gefalteten Schlauchränder vertikal beweglich angeordneten Leitelementen 8 besteht, unterhalb welcher eine Trenneinrichtung 9 sowie eine Schweißeinrichtung 10 angeordnet sind.In the frame 1, a roller 4 is mounted on which a plastic tube 5 made of stretchable material is wound with side gussets. Stretchable material is understood to mean one that returns to the state it was in before stretching. The hose 5 with the folded-in side edges on the roller 4 is fed via deflection rollers 6 and drive rollers 7 to a threading device which consists of the area of the folded tube edges of vertically movably arranged guide elements 8, below which a separating device 9 and a welding device 10 are arranged.

Unterhalb der Leitelemente 8 sind auf beiden Seiten des Gestells zwei dachförmige angeordnete Doppelförderbänder 11 angeordnet, wobei die oberen Aufnahmeenden unmittelbar unterhalb der Leitelemente 8 in deren abgesenkter Stellung befindlich sind.Below the guide elements 8, two roof-shaped double conveyor belts 11 are arranged on both sides of the frame, the upper receiving ends being located directly below the guide elements 8 in their lowered position.

Jedem Doppelförderband 11 ist ein Schwenkhebel 18 zugeordnet. Jeder Schwenkhebel 18 liegt dabei in Draufsicht gesehen etwas einwärts des zugeordneten Doppelförderbandes 11.A pivot lever 18 is assigned to each double conveyor belt 11. Each swivel lever 18 lies somewhat inward of the associated double conveyor belt 11, as seen in plan view.

Im Gestell 1 sind in der Nähe der vier Ecken desselben endlos umlaufende Ketten gelagert, in der Zeichnung nicht dargestellt, an denen parallel zur Fahrbahnrichtung je ein Schlitten 12 jeweils mit zwei vertikalen Spreizfingern 13 mit Kopf 14 befestigt ist, wobei diese Befestigung im einzelnen noch näher beschrieben wird. Jeder Spreizfinger 13 ist in Längs- und Querrichtung zur Anpassung an verschiedene Abmessungen des Gutstapels 3 verstellbar, eine entsprechende Antriebseinrichtung ist in Fig. 1 allgemein dargestellt und mit 15 bezeichnet. Am oberen Ende jedes Spreizfingers 13 ist außen eine Antriebsrolle 16 zugeordnet, die in Fig. 1 in nicht näher dargestellter Weise in Richtung zum Spreizfinger 13 in die in den Figuren 2, 9 und 11 wiedergegebene Wirkstellung beweglich und aus dieser in den Figuren 1, 7, 8 und 11 wiedergegebene unwirksame Stellung radial nach außen bewegbar ist.In frame 1 near the four corners of the same endless chains are stored, not shown in the drawing, to which a carriage 12 is attached with two vertical spreading fingers 13 each with a head 14 parallel to the direction of the carriageway, this attachment in more detail is described. Each spreading finger 13 is adjustable in the longitudinal and transverse directions to adapt to different dimensions of the stack 3, a corresponding drive device is shown generally in FIG. 1 and designated by 15. At the upper end of each spreading finger 13, a drive roller 16 is assigned on the outside, which in FIG. 1 can be moved in a manner not shown in the direction of the spreading finger 13 into the active position shown in FIGS. 2, 9 and 11 and from this in FIGS. 1, 7 , 8 and 11 reproduced ineffective position can be moved radially outwards.

Die erfindungsgemäße Ausgestaltung der Spreizfinger geht am besten aus den Figuren 4 und 5 hervor. Jeder Spreizfinger 13 ist in seinem vertikalen Steg 13a, an dem die Schlauchfolie geführt ist, mit einer Aussparung 19 versehen, in der zwei übereinander angeordnete Rollen 20,20a drehbar gelagert sind. Dabei stehen die Rollen 20,20a bereichsweise auf der der Schlauchfolienhaube und dem Antriebsrad 16 zugewandten Seite gegenüber der vertikalen Fläche 13a des Spreizfingers 13 hervor. Die Rollen 20,20a sind derart übereinander angeordnet, daß zwischen ihnen ein geringer Abstand besteht, der mit 21 bezeichnet ist, derart, daß die Rollen 20,20a nicht miteinander in Kontakt stehen. Es kann dabei vorgesehen sein, daß jeweils wenigstens zwei Rollen 20 bzw. 20a nebeneinander in der Aussparung 19 angeordnet sind oder es kann auch jeweils eine entsprechend breitere Rolle eingesetzt werden. Um eine Einklemmung der Folie zu vermeiden, ist am unteren Rand der Aussparung 19 vorteilhaft die Spreizfingerfläche 13a bereichsweise nach innen abgekantet (Fig. 5).The configuration of the spreading fingers according to the invention is best seen in FIGS. 4 and 5. Each spreading finger 13 is provided in its vertical web 13a, on which the tubular film is guided, with a recess 19 in which two rollers 20, 20a arranged one above the other are rotatably mounted. The rollers 20, 20a stand up in some areas the side facing the tubular film hood and the drive wheel 16 opposite the vertical surface 13a of the spreading finger 13. The rollers 20, 20a are arranged one above the other in such a way that there is a small distance between them, which is denoted by 21, such that the rollers 20, 20a are not in contact with one another. It can be provided that at least two rollers 20 or 20a are arranged side by side in the recess 19, or a correspondingly wider roller can also be used in each case. In order to avoid the film becoming trapped, the spreading finger surface 13a is advantageously bent inwards in some areas at the lower edge of the recess 19 (FIG. 5).

Die Anordnung der Rollen 20,20a ist, wie am besten aus Fig. 3 hervorgeht, bevorzugt so getroffen, daß die Rollen symmetrisch zu einer die Drehachse 22 des Antriebsrades 16 enthaltenden Horizontalebene angeordnet sind. Dies hat den Vorteil, daß beim radialen Nachinnenverfahren des Antriebsrades 16 das Antriebsrad von den Rollen 20,20a zentriert wird und gleichmäßig mit den Rollen 20,20a in Kontakt kommt bzw. den dazwischenbefindlichen Stretchfolienschlauch flächig berührt.3, the arrangement of the rollers 20, 20a is preferably such that the rollers are arranged symmetrically to a horizontal plane containing the axis of rotation 22 of the drive wheel 16. This has the advantage that when the drive wheel 16 is moved radially inwards, the drive wheel is centered by the rollers 20, 20a and evenly comes into contact with the rollers 20, 20a or touches the area between the stretch film tube.

Die erfindungsgemäße Ausbildung der Verstellbarkeit der Spreizfinger 13 und Antriebsräder 16 ist in den Fig. 2 und 3 dargestellt. Das Antriebsrad 16, das mit einem Antriebsmotor 23 versehen ist, ist an einem Tragarm 24 angeordnet, der über eine Kolben-/Zylindereinheit 25 eine radiale Bewegung in Richtung des Pfeiles 26 ermöglicht, d.h. radial zum zugeordneten Spreizfinger 13 bzw. von diesem weg. Dabei ist der Tragarm 24 mit der Kolben-/Zylindereinheit 25 an einem Tragelement 27 angeordnet, an dem auch der betreffende Spreizfinger 13 angeordnet ist, welcher gegenüber dem Tragelement 27 in radialer Richtung (Pfeil 28) beweglich ist. Dazu ist ein Spindelantrieb 29a am Tragelement 27 angeordnet, der ein Ausfahren des Spreizfingers 13 in radialer Richtung ermöglicht.The inventive design of the adjustability of the spreading fingers 13 and drive wheels 16 is in FIGS. 2 and 3 shown. The drive wheel 16, which is provided with a drive motor 23, is arranged on a support arm 24 which enables a radial movement in the direction of the arrow 26 via a piston / cylinder unit 25, ie radially to the associated spreading finger 13 or away from it. The support arm 24 with the piston / cylinder unit 25 is arranged on a support element 27 on which the relevant spreading finger 13 is also arranged, which is movable in the radial direction (arrow 28) relative to the support element 27. For this purpose, a spindle drive 29a is arranged on the support element 27, which enables the spreading finger 13 to be extended in the radial direction.

Am Tragelement 27 selbst ist eine Kolben-/Zylindereinheit 29 angeordnet, die ihrerseits an einem Befestigungselement 30 befestigt ist, welches mit einer Kolben-/Zylindereinheit 31 verbunden ist, die am anderen Ende am Schlitten 12 festgelegt ist. Durch diese Ausgestaltung sind folgende Bewegungen möglich: Zunächst läßt sich der Schlitten 12 im Gestell 1 in vertikaler Richtung in der Höhe verfahren, darüber hinaus ist eine Verschiebung in Richtung des Pfeiles 32 des Befestigungselementes 30 möglich und damit entsprechend auch des Spreizfingers 13 und des Antriebsrades 16.A piston / cylinder unit 29 is arranged on the support element 27 itself, which in turn is fastened to a fastening element 30 which is connected to a piston / cylinder unit 31 which is fixed to the slide 12 at the other end. This configuration enables the following movements: First, the carriage 12 can be moved vertically in the frame 1 in the vertical direction, furthermore a displacement in the direction of the arrow 32 of the fastening element 30 is possible and thus also the spreading finger 13 and the drive wheel 16 .

Mit der Kolben-/Zylindereinheit 29 ist eine Verschiebung des Tragelementes 27 und damit des Spreizfingers 13 rechtwinklig zur radialen Auslenkrichtung 26 des Spreizfingers möglich (Pfeil 33). Aufgrund dieser Verschiebbarkeit ist es möglich, die Vorrichtung auch für Gutstapel einzusetzen, die unterschiedliche Grundflächen aufweisen.With the piston / cylinder unit 29, a displacement of the support element 27 and thus of the spreading finger 13 is at right angles to the radial deflection direction 26 of the spreading finger possible (arrow 33). Because of this displaceability, it is also possible to use the device for stacks of goods that have different base areas.

Der Verfahrensablauf mit einer erfindungsgemäßen Vorrichtung ist der folgende:The procedure with a device according to the invention is as follows:

Der flachliegende Stretchfolienschlauch 5 wird durch die Antriebsrollen 7 über die Leitelemente 8 eingefädelt, die sich beim Anfahren der Maschine in abgesenkter Stellung be finden. Am unteren Ende der Leitelemente wird jeder eingefaltete Rand des Schlauches zwischen ein Doppelförderband 11 geleitet, wodurch das Öffnen des Schlauches besorgt wird (Fig. 6). Nachdem das untere Ende des Schlauches ein Stück aus den Doppelförderbändern 11 herausgelaufen ist, werden der Antrieb der Antriebsrollen 7 sowie die Doppelförderbänder 11 gestoppt und die Spreizfinger 13 werden in das untere Schlauchende eingefahren. Nach dem Einfahren werden die Spreizfinger 13 angehalten, so daß sich der Schlauch an seinen vier Ecken um die Spreizfinger 13 legt. Daraufhin werden die Antriebsrollen 16 an die Spreizfinger 13 herangefahren und in Betrieb gesetzt, und zwar zusammen mit den Antriebsrollen 7 und den Doppelförderbändern 11, bis die der Höhe des Stapels 3 entsprechende Länge Schlauch um die Spreizfinger 13 faltenbalgartig in Wellen gelegt worden sind. Dabei wird eine einwandfreie Faltenlegung dadurch bewirkt, daß die Antriebsräder 16 durch die Rollen 20,20a an den Spreizfingern 13 flächig an der Schlauchfolie 5 anliegen. Anschließend werden die Antriebsrollen 7, die Doppelförderbänder 11 und die Antriebsrollen 16 wieder gestoppt (Fig. 7). Die Trenn- und Schweißeinrichtungen 9 und 10 werden betätigt. Nach der Beendigung des Trenn- und Schweißvorganges werden die Doppelförderbänder 11 wieder betätigt und gleichzeitig die Schwenkhebel 18 abwärts geschwenkt, wodurch die gefalteten Schlauchräder aus den Aufnahmeenden der Doppelförderbänder herausgedrückt bzw. gezogen werden.The flat-lying stretch film tube 5 is threaded through the drive rollers 7 via the guide elements 8, which are found when the machine is started in the lowered position. At the lower end of the guide elements, each folded edge of the hose is passed between a double conveyor belt 11, which causes the hose to be opened (FIG. 6). After the lower end of the hose has run out of the double conveyor belts 11, the drive of the drive rollers 7 and the double conveyor belts 11 are stopped and the spreading fingers 13 are inserted into the lower end of the hose. After retraction, the spreading fingers 13 are stopped, so that the tube wraps around the spreading fingers 13 at its four corners. Then the drive rollers 16 are moved to the spreading fingers 13 and put into operation, namely together with the drive rollers 7 and the double conveyor belts 11, until the length of the stack 3 corresponding to the length of the hose around the spreading fingers 13 has been placed in bellows-like waves are. In this case, proper folding is achieved in that the drive wheels 16 lie flat against the tubular film 5 by the rollers 20, 20a on the spreading fingers 13. The drive rollers 7, the double conveyor belts 11 and the drive rollers 16 are then stopped again (FIG. 7). The separating and welding devices 9 and 10 are actuated. After the separation and welding process has ended, the double conveyor belts 11 are actuated again and, at the same time, the pivot levers 18 are pivoted downward, as a result of which the folded tubular wheels are pressed or pulled out of the receiving ends of the double conveyor belts.

Sobald der Schlauch von den Doppelförderbändern 11 freigegeben ist, werden die Spreizfinger 13 in die in Fig. 1 wiedergegebene Reckstellung bewegt und die Antriebsrollen 16 radial nach außen bewegt. Unmittelbar nach Einnahme der in Fig. 1 wiedergegebenen Reckstellung mit 17 bezeichneter Stretchfolienhaube wird der Gutstapel 3 über die Fahrbahn 2 hinaus angehoben und die nicht dargestellten Ketten werden angetrieben, derart, daß die Schlitten 12 sich mit den damit gekoppelten Spreizfingern 13 und dem auf diesen in Reckstellung in Wellen befindlichen Schlauch 5 der Haube 17 längs des Stapels abwärts bewegt werden. Dabei legt sich das obere verschlossene Ende der durch das Verschweißen gebildeten Haube 17 auf die Oberfläche des Stapels 3 auf, so daß beim weiteren Überziehen der gewellten Haube 17 sich Welle nach Welle aufzieht und entsprechend ihrer Freigabe aus der Reckstellung an die Seitenfläche des Stapels 3 anliegt (siehe Fig. 8). Dabei wird ein einwandfreies Aufziehen durch die Rollen 20,20a an den Spreizfingern 13 gewährleistet.As soon as the hose is released from the double conveyor belts 11, the spreading fingers 13 are moved into the stretching position shown in FIG. 1 and the drive rollers 16 are moved radially outwards. Immediately after taking the stretching position indicated in FIG. 1 with 17 designated stretch film hood, the material stack 3 is raised beyond the carriageway 2 and the chains, not shown, are driven in such a way that the carriage 12 with the spreading fingers 13 coupled therewith and on this in The stretching position of the hose 5 of the hood 17 located in waves can be moved downwards along the stack. The upper closed end of the hood 17 formed by the welding lies on the surface of the stack 3, so that when the corrugated hood 17 is pulled over further Wave after wave winds up and, according to their release from the stretching position, rests against the side surface of the stack 3 (see FIG. 8). This ensures that the rollers 20, 20a pull the spreading fingers 13 properly.

Zur Vertikalstretchung der Folienhaube können während des Überziehens die Antriebsräder 16 an die Spreizfinger 13 herangefahren und in Betrieb gesetzt werden, derart, daß die Folienhaube in vertikaler Richtung durch eine entsprechende Relativbewegung gestretcht werden.For vertical stretching of the film hood, the drive wheels 16 can be moved to the spreading fingers 13 and put into operation during the pulling-over, in such a way that the film hood is stretched in the vertical direction by a corresponding relative movement.

Im unteren Bereich des Stapels verbleiben dann die Antriebsrollen 16 in ihrer Kontaktposition, wobei sie angetrieben bzw. angehalten werden, um eine gewisse Einklemmung der Haube 17 zwischen Antriebsrollen 16 und Spreizfingern 13 zu bewirken. Dabei wird dann im unteren Bereich des Gutstapels die Abwärtsgeschwindigkeit der Schlitten 12 erhöht, insbesondere dann, wenn sich die Schlitten 12 im Bereich der unteren Eckkanten des Gutstapels befinden (Fig. 9).In the lower region of the stack, the drive rollers 16 then remain in their contact position, being driven or stopped in order to bring about a certain clamping of the hood 17 between the drive rollers 16 and spreading fingers 13. The downward speed of the carriages 12 is then increased in the lower region of the stack of goods, in particular when the carriages 12 are in the region of the lower corner edges of the stack of goods (FIG. 9).

Ist der gesamte Gutstapel mit der Haube 17 überzogen (Fig. 10) werden die Spreizfinger 13 ggf. mit den Antriebsrollen 16 radial nach innen verfahren, und zwar mit einer größeren Geschwindigkeit als die Abwärtsgeschwindigkeit der Schlitten 12 im unteren Bereich des Gutstapels. Anschließend werden die Antriebsrollen 16 und die Spreizstangen 13 radial nach außen bewegt, so daß die Haube 17 auch in ihrem offenen, sich unterhalb des Stapels 3 befindlichen Randbereich freigegeben wird. Aufgrund der Rückstellkraft der Stretchfolienhaube 17 wird diese um die untere Randfläche der Unterlage des Stapels 3 herumgestretcht, derart, daß eine gute Verbindung der Unterlage des Stapels 3 mit den auf dieser gestapelten Gegenständen gewährleistet ist. Dabei wird durch die vergrößerte Geschwindigkeit der Abwärtsbewegung der Schlitten 12 im unteren Stapelbereich und die noch größere Einwärtsbewegung der Spreizfinger 13 unter den Stapel sicher gewährleistet, daß die Haube 17 unterhalb des Gutstapels 2 verbleibt und nicht über die unteren Eckkanten hinaus in den Seitenbereich hinausrutscht.If the entire stack of goods is covered with the hood 17 (FIG. 10), the spreading fingers 13 are possibly moved radially inwards with the drive rollers 16, and indeed at a greater speed than the downward speed of the slides 12 in the lower region of the stack of goods. Then be the drive rollers 16 and the spreader rods 13 are moved radially outward, so that the hood 17 is also released in its open edge area located below the stack 3. Due to the restoring force of the stretch film hood 17, this is kicked around the lower edge surface of the base of the stack 3 in such a way that a good connection of the base of the stack 3 with the objects stacked on it is ensured. The increased speed of the downward movement of the carriage 12 in the lower stack area and the even greater inward movement of the spreading fingers 13 under the stack ensure that the hood 17 remains below the stack of goods 2 and does not slip beyond the lower corner edges into the side area.

Der übergezogene Gutstapel 3 kann anschließend nach Absenken auf die Fahrbahn 2 aus dem Gestell 1 herausgefahren und ein neuer Gutstapel eingefahren werden, worauf der Verfahrensablauf von neuem beginnt.The coated stack of goods 3 can then be moved out of the frame 1 after being lowered onto the carriageway 2 and a new stack of goods can be inserted, whereupon the process sequence begins again.

Natürlich sind die beschriebenen Ausführungsbeispiele noch in vielfacher Weise abzuändern, ohne den Grundgedanken der Erfindung zu verlassen. So sind insbesondere die einzelnen Verstellmechanismen nicht auf Kolben-/Zylindereinheiten beschränkt; hier können auch andere bekannte Verstellmechanismen Einsatz finden und dgl. mehr.Of course, the exemplary embodiments described can be modified in many ways without departing from the basic idea of the invention. In particular, the individual adjustment mechanisms are not limited to piston / cylinder units; other known adjustment mechanisms can also be used here and the like. More.

Claims (4)

  1. Apparatus for forming a stack of goods by connecting and wrapping a stack formed on a support by means of stretch foil comprising a stretch foil tube draw-off device, a spreader device arranged downstream thereof for spreading open the free end of the tube, a severing and welding device (9, 10) for cutting off a portion of tube and forming a stretch cover and a cover pull-over device which has at least four spreading fingers (13) which are movable in the horizontal and vertical directions and which receive the cover in a condition of being folded together bellows-like in the four corner regions, wherein associated with each spreading finger (13) at the outside is a drive roller (16) which is displaceable with respect to the respective spreading finger (13) and by means of which the cover is moved into the bellows-like position, and the respective spreading finger (13) and the associated drive roller (16) are arranged on a common, vertically movable carriage (12), characterised in that each spreading finger (13) is provided with an opening (19) in which two rollers (20, 20a) which are arranged one above the other and which are arranged symmetrically relative to a horizontal plane containing the axis of rotation (22) of the drive wheel (16) are rotatably mounted, wherein the rollers (20, 20a) project in a region-wise manner relative to the spreading finger surface (13a) on the side which is towards the cover (17) and the drive wheel (16) and the drive wheel (16) in an inwardly moved position is in contact with the rollers (20, 20a) with the interposition of the foil cover (17) while at the lower edge of the opening (19) the spreading finger surface (13a) is tilted inwardly.
  2. Apparatus according to claim 1 characterised in that at least two rollers (20, 20a) are respectively arranged in side-by-side relationship in the opening (19).
  3. Apparatus according to claim 1 or one of the following claims characterised in that arranged on the respective vertically movable carriage (12) is a carrier element (27) which carries the drive wheel (16) and the spreading finger (13) and which is displaceable at a right angle (arrow 33) relative to the radial deflection direction (arrow 26) of the spreading fingers (13).
  4. Apparatus according to claim 3 characterised in that the carrier element (27) is additionally displaceable along the carriage (12).
EP93105325A 1992-04-03 1993-03-31 Device and method for making a stack of articles Expired - Lifetime EP0564971B1 (en)

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DE4211297A DE4211297A1 (en) 1992-04-03 1992-04-03 Device and method for forming a stack of goods
DE4211297 1992-04-03

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DE20109692U1 (en) * 2001-06-13 2002-10-24 Beumer Maschf Gmbh & Co Kg Device for wrapping general cargo by means of a stretch film hood
EP1266829A1 (en) 2001-06-13 2002-12-18 Beumer Maschinenfabrik GmbH &amp; Co. KG Method and apparatus for wrapping articles, particularly stacks of articles, in a stretchfoil, as well as the load obtained

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EP1184281B1 (en) * 2000-08-09 2003-06-11 Lachenmeier A/S Method an apparatus for packaging objects
DE20101909U1 (en) * 2001-01-25 2002-06-13 Msk Verpackung Syst Gmbh Device for wrapping a stack of goods
DE50205626D1 (en) * 2001-07-11 2006-04-06 Moellers Maschf Gmbh Method and device for covering a stretch film hood over a stack of goods
KR20130089035A (en) * 2012-02-01 2013-08-09 삼성전자주식회사 Shrink film packing system
NL2017863B1 (en) * 2016-11-24 2018-06-01 F3 Design B V Packaging machine for applying a foil to an object to be packaged
US11492155B2 (en) 2020-05-14 2022-11-08 Signode Industrial Group Llc Stretch-hood machine

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EP0461667A1 (en) * 1990-06-15 1991-12-18 Bernhard Beumer Maschinenfabrik KG Method and apparatus for wrapping products in stretchable film

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DE9104072U1 (en) * 1991-04-04 1991-06-20 Develog, Reiner Hannen & Cie, Courtelary Device for covering a stack of goods with stretch film

Cited By (2)

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Publication number Priority date Publication date Assignee Title
DE20109692U1 (en) * 2001-06-13 2002-10-24 Beumer Maschf Gmbh & Co Kg Device for wrapping general cargo by means of a stretch film hood
EP1266829A1 (en) 2001-06-13 2002-12-18 Beumer Maschinenfabrik GmbH &amp; Co. KG Method and apparatus for wrapping articles, particularly stacks of articles, in a stretchfoil, as well as the load obtained

Also Published As

Publication number Publication date
ATE152682T1 (en) 1997-05-15
EP0564971A2 (en) 1993-10-13
EP0564971A3 (en) 1993-12-08
DE4211297A1 (en) 1993-10-14
DE59306365D1 (en) 1997-06-12

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