EP1275581B1 - Procédé et appareil pour envelopper une pile de marchandises avec une housse de film étirable - Google Patents

Procédé et appareil pour envelopper une pile de marchandises avec une housse de film étirable Download PDF

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Publication number
EP1275581B1
EP1275581B1 EP02015360A EP02015360A EP1275581B1 EP 1275581 B1 EP1275581 B1 EP 1275581B1 EP 02015360 A EP02015360 A EP 02015360A EP 02015360 A EP02015360 A EP 02015360A EP 1275581 B1 EP1275581 B1 EP 1275581B1
Authority
EP
European Patent Office
Prior art keywords
film
reefing
stack
fingers
tubular
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 - Lifetime
Application number
EP02015360A
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German (de)
English (en)
Other versions
EP1275581A1 (fr
Inventor
Peter Aka
Peter Döhring
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.)
MASCHINENFABRIK MOELLERS GmbH
Maschinenfabrik Moellers GmbH
Original Assignee
MASCHINENFABRIK MOELLERS GmbH
Maschinenfabrik Moellers GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MASCHINENFABRIK MOELLERS GmbH, Maschinenfabrik Moellers GmbH filed Critical MASCHINENFABRIK MOELLERS GmbH
Publication of EP1275581A1 publication Critical patent/EP1275581A1/fr
Application granted granted Critical
Publication of EP1275581B1 publication Critical patent/EP1275581B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing 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
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/13—Enclosing 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
    • B65B9/135—Enclosing 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 present invention relates to a method for coating a stretch film hood on a stack, in which supplied from a sheet supply tubular film is opened and taken over by moving in horizontal and vertical direction, engaging in the film refusers and bellows is experiencedrefft on this and in which the supplied film for Forming the hose hood with distance to its lower end provided with a seam and is separated from the film supply, the film transversely spread by spreading the Refffinger to a larger floor plan than that of the stack and when shutting down the Refffinger to rest against the long sides of the stack of the refusers is released.
  • Such a method is known for example from DE-C-43 07 287 and serves to wrap the stack, which is usually formed from a plurality of juxtaposed and stacked on a pallet piece goods.
  • the supplied tubular film is stretched before coating over the stack on a larger floor plan than that of the stack and then pulled under release of the refusers over the stack. Due to its elastic properties, the film hood fits closely to the outer peripheral surface of the stack and, if several pieces of goods form the stack, connects them to form a packaging unit.
  • the stability of the packaging unit caused by the coated film depends, inter alia, also on the elastic elongation of the coated film on the longitudinal sides.
  • the required longitudinal expansion of the tubular film is effected, for example, in the method known from US Pat. No.
  • the present invention is therefore based on the problem of providing a method and a device, by means of which with less use of film material, a reliable wrapping of the stack is possible.
  • the proposed solution of the present invention is based on the surprising finding that, in order to limit the film elongation, the elongation of the top of the hood in the clamped state must be controlled at least in the upper region of its longitudinal sides after the transverse stretching and / or upon application to the top of the stack.
  • those reffering means which bellows the film to the film are moved away from the reflowers before the transverse stretching of the film.
  • the refining agents are not in their active position occupied during reefing, so that the film can slide freely away from the spreading fingers during cross-stretching against the refraction and is released.
  • Such a preferred process management requires regularly device-side facilities on the Refffingern, which will be discussed below.
  • the aforementioned Reffstoff remain effective, i. lie with the interposition of the film against the Refffinger and are moved relative to the Refffingern to release the film. Accordingly, the reefing means move in a direction opposite to the reefing direction and release foil.
  • the present invention provides a device having the features of claim 7.
  • This has in a conventional manner a film supply for tubular film and a separating or cutting device for forming a top side closed and separated from the film supply hose hood.
  • the device comprises a spreading device for opening the tubular film and a coating device, which can be introduced into the tubular film and the transverse stretch of the same apart to be moved Refffinger which are movable relative to the longitudinal side of the stack and which drivable Reffmittet for bellows depositing the supplied tubular film the Refffinger are assigned.
  • This device known per se has, according to the invention, means provided on the refiners for reducing the friction with respect to the film wrapping around the refining fingers.
  • the looped by the film area of the refining fingers is where the film in the transverse stretch of a substantially parallel to the side surfaces of the stack of goods extending orientation in a substantially parallel to the top of the stack of goods extending orientation when clamping the same is deflected.
  • the Refffinger are regularly wrapped in the transverse stretching at an angle of about 90 ° of the film. When longitudinal stretch of the wrap angle is significantly lower.
  • special measures are provided in the prior art, which should just prevent the film from undesirably sliding off the refffingers.
  • EP-B-0 344 815 it is proposed in EP-B-0 344 815 to provide a resistance-forming stretch bar at the upper-side end of the refining finger, which is intended to ensure the desired longitudinal extension on the longitudinal side of the goods stack.
  • the present invention with its device-wise aspect turns completely off.
  • the device according to the invention has means for reducing the friction precisely where the film slides off the refining fingers.
  • the optionally required high longitudinal expansions on the side surfaces of the stack can be achieved, for example, that the Reffstoff are effective when coating the hose hood on the stack of articles and by applying a defined holding force to prevent the sliding of the film from the refiner at least until the desired Longitudinal expansion is achieved in each case.
  • the friction reducing agents according to the invention result in a friction between the film and the refining finger during transverse stretching of the film, which is lower than in the prior art, where the spreading fingers are in any case formed on their sections of steel or aluminum wrapped around the film.
  • the means for reducing the friction are formed by the fact that the wrapped surface of the film is made of a plastic.
  • a suitable plastic may be, for example, polytetrafluoroethylene.
  • the plastic may be provided as a layer on the surface of the refiner at least at those surface areas, which are wrapped by the film.
  • the Refffinger may also be partially formed of a solid plastic material optionally to increase the strength of a fiber composite plastic.
  • the refining means may comprise means for generating a rolling friction to the foil wrapping around the refining fingers.
  • Such means may for example be formed by rotatably driven rollers, which are arranged at the upper end of the refining fingers and wrapped by the film and allow control of the released when mounting the film length of film.
  • the extent of the released when mounting the hood top and Querstretchen the foil length can be specified and controlled for example by the Reffstoff, as indicated in the dependent claim 13.
  • the rollers are provided on a reef bracket whose end portions approximately at right angles to each other and each parallel to adjacent longitudinal sides of are arranged to be wrapped stack of goods.
  • the reef bow known as such, for example, from EP-B-0 344 815 and also DE-C-43 27 450 is provided in this aforementioned prior art as a means for increasing the friction between the film and the reef bow.
  • FIG. 1 of a device comprises a device frame 1, between the vertical uprights a roadway 2 for supplying and discharging stacks of goods 3, which are each formed from a plurality of stacked piece goods, is arranged.
  • a roller 4 is mounted, on which a tubular film 5 is wound.
  • the side edges of the tubular film 5 are folded in the wound state (gusseted tube).
  • the tubular film 5 is fed via deflecting rollers 6 and take-off rollers 7 to a threading device which has vertically movable guide elements 8.
  • the device further comprises a separating device 9 and a welding device 10.
  • roof-shaped double conveyor belts 11 are arranged as a means for opening the film in a known manner on both sides of the device frame 1, the upper receiving ends are located directly below the guide elements 8 in its vertically lowered position.
  • each carriage 12 On the four uprights of the device frame 1 each carriage 12 are movably mounted in the vertical or longitudinal direction of the supplied tubular film 5, to each of which a refining finger 13 is attached.
  • the present on the four Standerabectiven Refffinger 13 have horizontally extending Reffbügel 14, each having approximately at right angles to each other, parallel to the side surfaces of the stack 3 extending bracket ends.
  • Each refining finger 13 is fastened to the corresponding slide 12 via a drive device 15.
  • the drive means 15 is in the present case formed from a hydraulic cylinder, wherein all longitudinal axes of the hydraulic cylinders are aligned approximately at the center of the device frame are and lie in an approximately horizontal plane.
  • Each of the refining members 13 is assigned an externally arranged refining roller 16, which is mounted on the carriage 12 and which is movable in the horizontal or transverse direction and relative to the respective refining finger 13.
  • the longitudinal axis of the refroll 16 extends parallel to a respective side surface of the stack of articles 3.
  • FIGS. 2 and 3 show a reefing bar 14 with a refining finger 13.
  • the reefing bar 14 is located at the upper end of the reefing 13 and extends substantially parallel to the top of the stack of articles to be wrapped, i. horizontal.
  • the reef bar 14 has two legs 14a, 14b, which extend essentially at right angles to one another and are oriented substantially parallel to the side surfaces of the stack to be wrapped.
  • FIG. 2 and 3 of a refiner is particularly suitable for introducing high longitudinal extensions parallel to the longitudinal sides of the stack to be wrapped when depositing the film on these long sides and has at its substantially parallel to the longitudinal sides of the stack of goods extending outer bearing surface 13a a concave depression 13b bounded by a cylindrical surface 13c.
  • the concave depression 13b extends parallel to the axial extent of the refining roller 16, which is indicated by a dashed line in FIG.
  • a ring-segment-shaped gap 17 is formed between the outer peripheral surface of the Reffrolle 16 and the cylinder jacket surface 13 c.
  • the refining finger is made of steel and has on the surface of the reefing bar 14 a plastic surface applied to a steel core.
  • FIG. 4 shows a plan view of an alternative exemplary embodiment of a reef bow 14, which is assigned to a reefing finger, not shown here, substantially in accordance with the embodiment shown in FIGS. 2 and 3.
  • the circumferential surface of the reefing bow 14 is formed by five rollers 21 arranged in a freely rotatable manner one behind the other. These rollers 21 each have a convex curved outer peripheral surface and are with their axis of rotation each angularly offset from each other, so that the outer peripheral surfaces of the rollers 21 form approximately a circular arc segment.
  • the two outer rollers 21a, 21e are arranged with their respective axes substantially perpendicular to each other.
  • supports 22 may be provided with the remaining part of the refffinger 13, which carry the rollers 21 and connect them to the remaining part of the refining fingers 13. At least one of these supports 22 can form the cylinder jacket surface 13c for the refining roller 16 as well as furthermore a contact surface 13a lying behind in the conveying direction of the film.
  • the flat tubular film 5 is threaded in a conventional manner by the take-off rollers 7 via the guide elements 8. At the lower end of the guide elements 8 each folded edge of the tubular film 5 is passed between a double conveyor belt 11 to open the hose. After the lower end of the tubular film 5 has run out a piece of the double conveyor belts 11, the take-off rollers 7 and the double conveyor belts 11 are stopped and the refining fingers 13 are retracted into the hose end. When the refining fingers 13 have reached a predetermined position, the refrolling rollers 16 are moved up to the refining fingers 13.
  • the separating and welding devices 9 and 10 are operated to form the withdrawn, located below the separating and welding devices 9, 11 portion of the tubular film 5 to a top sealed hose cap 18 of predetermined length. Thereafter, the double conveyor belts 11 are driven again to the rest Release part of the formed-tube cap 18, which can be brought preferably by simultaneous start of the reforwarding 16 in a predetermined starting position and stretched over the reef bracket 14.
  • the refining fingers 13 are moved apart in the transverse direction.
  • the reefing rolls 16 in the illustrated embodiments are subtracted from the refining fingers 13 so that the rewinding rolls 16 are arranged in a non-use position.
  • the position shown in FIG. 1 is reached.
  • the four located at the corner of the refining fingers 13 are moved together with the refroll 16 relative to the stack of pieces.
  • the stack of stacks is predominantly fixed, whereas the refining fingers 13 are moved downwards.
  • the film 5 With continuous downward movement of the refining fingers 13, the film 5 is withdrawn against the contact pressure of the Reffrollen 16 of the Refffingern 13 and brought to rest against the longitudinal sides of the stack of goods 3. Finally, the previously formed hose cover is over-pulled over the stack of goods 3.
  • the device according to the invention and the corresponding method are not limited to the previously described embodiments.
  • the Relative movement between the film hood and the stack of goods take place in that the film is arranged stationary, whereas the stack of articles is raised to cover with the film hood.
  • the hose cap can first be welded and then auffffft on the Refffinger.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Outer Garments And Coats (AREA)
  • Stacking Of Articles And Auxiliary Devices (AREA)
  • Making Paper Articles (AREA)
  • Closing Of Containers (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Claims (12)

  1. Procédé pour revêtir une pile de produits d'une housse en feuille extensible, dans lequel une feuille en gaine amenée d'une réserve de feuille est ouverte et reprise par des doigts à ariser mobiles dans la direction horizontale et verticale, qui s'engagent dans la feuille, et est arisée sur ces derniers à la manière d'un soufflet, et dans lequel la feuille amenée est munie d'une soudure à distance de son extrémité inférieure pour réaliser la housse en gaine et est séparée de la réserve de feuille, la feuille est étirée transversalement par écartement des doigts à ariser sur un tracé plus grand que celui de la pile de produits et est dégagée des doigts à ariser lors de la descente de ces derniers jusqu'au contact des côtés longitudinaux de la pile de produits, caractérisé en ce que la feuille est dégagée lors de l'étirement transversal par les doigts à ariser.
  2. Procédé suivant la revendication 1, caractérisé en ce que des moyens pour ariser, qui transportent la feuille en forme de soufflet sur les doigts à ariser, sont repoussés avant l'étirement transversal de la feuille par les doigts.
  3. Procédé suivant l'une des revendications 1 caractérisé en ce que des moyens pour ariser, qui transportent la feuille en forme de soufflet sur les doigts à ariser, sont appliqués contre les doigts lors de l'étirement transversal de la feuille avec intercalation de cette dernière et sont déplacés par rapport aux doigts à ariser pour dégager la feuille.
  4. Procédé suivant la revendication 3, caractérisé en ce que les moyens à ariser sont entraînés lors de l'étirement transversal de la feuille pour le dégagement de la feuille.
  5. Procédé suivant l'une des revendications 3 et 4, caractérisé en ce que les moyens pour ariser sont entraînés alternativement en arisant et dégageant la feuille lors de l'étirement transversal de la feuille.
  6. Procédé suivant la revendication 5, caractérisé en ce que les moyens pour ariser sont entraînés en fonction d'une tension appliquée par la feuille tendue sur les doigts à ariser.
  7. Dispositif pour revêtir une pile de produits (3) d'une housse en feuille extensible, comprenant une réserve de feuille (4) pour feuille en gaine (5) et un équipement de séparation et de découpe (9, 10) pour la réalisation d'une housse en gaine fermée sur le côté supérieur et séparée de la réserve de feuille, ainsi qu'un équipement d'écartement (11) pour l'ouverture de la feuille en gaine et un équipement de revêtement comprenant des doigts à ariser (13) pouvant être introduits dans la feuille en gaine et s'écartant les uns des autres pour la tension de cette dernière, qui sont mobiles par rapport au côté longitudinal de la pile de produits (3) et sont associés à des moyens pour ariser (16) entraînables pour déposer sur les doigts à ariser (13) à la manière d'un soufflet la feuille en gaine (5) amenée, caractérisé en ce que les doigts à ariser (13) présentent des moyens pour réduire le frottement (21) par rapport à la feuille en gaine (5) enlaçant les doigts à ariser (13).
  8. Dispositif suivant la revendication 7, caractérisé en ce que la surface des doigts à ariser (13) enlacée par la feuille en gaine (5) est formée d'une matière plastique.
  9. Dispositif suivant l'une des revendications 7 et 8, caractérisé en ce que les doigts à ariser (13) présentent des moyens pour produire un frottement de roulement (21) par rapport à la feuille en gaine (5) enlaçant les doigts à ariser (13).
  10. Dispositif suivant la revendication 9, caractérisé en ce que les doigts à ariser (13) présentent à leurs extrémités enlacées par la feuille en gaine (5) des rouleaux (21) montés librement tournants.
  11. Dispositif suivant la revendication 10, caractérisé en ce que les rouleaux (21) sont prévus sur un étrier à ariser (14), dont les sections d'extrémité sont disposées à peu près à angle droit l'une de l'autre et à peu près parallèlement aux côtés longitudinaux opposés de la pile de produits (3).
  12. Dispositif suivant l'une des revendications précédentes, caractérisé en ce que les moyens pour ariser entraînables (16) sont commandés de telle sorte qu'ils s'appliquent sur les doigts à ariser (13) lors de l'étirement transversal de la feuille en gaine (5) avec intercalation de la feuille (5) et sont librement tournants ou entraînés en sens contraire du mouvement arisant des moyens pour ariser (16).
EP02015360A 2001-07-11 2002-07-10 Procédé et appareil pour envelopper une pile de marchandises avec une housse de film étirable Expired - Lifetime EP1275581B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10135476 2001-07-11
DE10135476 2001-07-11

Publications (2)

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EP1275581A1 EP1275581A1 (fr) 2003-01-15
EP1275581B1 true EP1275581B1 (fr) 2006-01-18

Family

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EP02015361A Expired - Lifetime EP1275582B1 (fr) 2001-07-11 2002-07-10 Appareil pour envelopper une pile de marchandises avec une housse de film étirable
EP02015360A Expired - Lifetime EP1275581B1 (fr) 2001-07-11 2002-07-10 Procédé et appareil pour envelopper une pile de marchandises avec une housse de film étirable

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Application Number Title Priority Date Filing Date
EP02015361A Expired - Lifetime EP1275582B1 (fr) 2001-07-11 2002-07-10 Appareil pour envelopper une pile de marchandises avec une housse de film étirable

Country Status (4)

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EP (2) EP1275582B1 (fr)
AT (2) ATE316035T1 (fr)
DE (2) DE50203177D1 (fr)
DK (2) DK1275581T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7320403B2 (en) * 2004-06-28 2008-01-22 Bsh Home Appliances Corporation Package, method, and kit for stretch hood packaging of home appliances
DE102012024176B4 (de) * 2012-12-10 2019-02-07 Beumer Gmbh & Co. Kg Vorrichtung zum Überziehen einer schlauchförmigen Verpackungsfolie und Reffelement
DK3281878T3 (da) * 2016-08-10 2018-11-12 Maschf Moellers Gmbh Indretning til omvikling af en godsstabel med en rørkappe og fremgangsmåde til udskiftning af rørfolielageret i en tilsvarende indretning
US11492155B2 (en) 2020-05-14 2022-11-08 Signode Industrial Group Llc Stretch-hood machine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2230549A1 (en) * 1973-05-23 1974-12-20 Applic Thermiques Machine for packing an object in a plastic sleeve - compresses sleeve into bellows form before passing object through
AU553073B2 (en) * 1982-04-23 1986-07-03 Technosearch Pty. Limited Stretch wrapping apparatus
DE9001319U1 (de) * 1990-02-06 1990-04-12 MSK-Verpackungs-Systeme GmbH, 47533 Kleve Vorrichtung zum Überziehen von Stretchfolienhauben über einen Gutstapel
DE4211297A1 (de) * 1992-04-03 1993-10-14 Moellers Maschf Gmbh Vorrichtung und Verfahren zur Bildung eines Gutstapels
DE4307287C2 (de) * 1993-03-09 2001-06-07 Moellers Maschf Gmbh Verfahren zum Umhüllung eines Stapels
DE9307716U1 (de) * 1993-05-21 1994-01-27 Maschinenfabrik Möllers GmbH u. Co, 59269 Beckum Vorrichtung zum Umhüllen eines Stapels
DE19612372C2 (de) * 1996-03-28 2000-09-21 Beumer Maschf Bernhard Stretcheinrichtung zum Stretchen einer Stretchfolienhaube
DE19732298C1 (de) * 1997-07-26 1999-02-04 Moellers Maschf Gmbh Vorrichtung und Verfahren zum Umhüllen eines Stapels
DE19859889A1 (de) * 1998-12-23 2000-06-29 Moellers Maschf Gmbh Verfahren und Vorrichtung zum Umhüllen eines Stückgutstapels
DE19933856A1 (de) * 1999-07-23 2001-01-25 Beumer Maschf Gmbh & Co Kg Verfahren zum Umhüllen von Stückgut, insbesondere eines Stückgutstapels, mit einer Stretchfolienhaube, und Vorrichtung zur Durchführung dieses Verfahrens

Also Published As

Publication number Publication date
DE50205626D1 (de) 2006-04-06
EP1275582B1 (fr) 2005-05-25
DK1275582T3 (da) 2005-08-01
ATE316035T1 (de) 2006-02-15
DK1275581T3 (da) 2006-05-08
EP1275582A1 (fr) 2003-01-15
ATE296225T1 (de) 2005-06-15
DE50203177D1 (de) 2005-06-30
EP1275581A1 (fr) 2003-01-15

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