EP0461564A1 - Dispositif pour envelopper des marchandises avec un film étirable - Google Patents

Dispositif pour envelopper des marchandises avec un film étirable Download PDF

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Publication number
EP0461564A1
EP0461564A1 EP91109394A EP91109394A EP0461564A1 EP 0461564 A1 EP0461564 A1 EP 0461564A1 EP 91109394 A EP91109394 A EP 91109394A EP 91109394 A EP91109394 A EP 91109394A EP 0461564 A1 EP0461564 A1 EP 0461564A1
Authority
EP
European Patent Office
Prior art keywords
film
pallet
piece goods
products
hood
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP91109394A
Other languages
German (de)
English (en)
Other versions
EP0461564B1 (fr
Inventor
Hans Dipl.-Ing. Dipl.-Ing. Lauhoff (Fh)
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.)
Beumer Maschinenfabrik GmbH and Co KG
Original Assignee
Beumer Maschinenfabrik GmbH and Co KG
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 Beumer Maschinenfabrik GmbH and Co KG filed Critical Beumer Maschinenfabrik GmbH and Co KG
Publication of EP0461564A1 publication Critical patent/EP0461564A1/fr
Application granted granted Critical
Publication of EP0461564B1 publication Critical patent/EP0461564B1/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 invention relates to a method for wrapping piece goods with stretch film according to the preamble of claim 1.
  • the invention further relates to a device for wrapping piece goods with stretch film according to the preamble of claim 3.
  • the present invention is therefore based on the object to improve the known generic methods and devices of the type described in particular in that the lower edge portion of the film wrapping is reinforced compared to the rest of the film wrapping, such reinforcement in a technically simple and economically satisfactory manner to be created.
  • a most preferred embodiment of the method according to the invention is that the lowermost edge section of the stretch film hood is directed downwards before being released or is left in this position, so that a three-layer film edge section results.
  • the bracket at least are to be moved closer to the piece goods between the first and second lowering position than their distance during the other covering process, in order to ensure the desired formation of folds and thus at least two layers of the lower film edge section.
  • the cross-stretched film held in reefed form on the lifting frame during the pulling process over the piece goods should have a not inconsiderable distance from the predetermined (theoretical) outside of the piece goods, in order to avoid a collision with the piece goods in irregularly formed formations but on the other hand, for the fold formation already discussed above and thus multilayering of the lower film edge section, a close proximity of the brackets to the piece goods or to the pallet supporting this has proven to be extremely useful, in a further embodiment of the present invention it is provided that at least one on each bracket Sensor is arranged, by means of which a minimum distance between the bracket and the general cargo or the pallet is maintained.
  • brackets In order to ensure a simple and safe detachment of the film from the brackets in the (raised) second lowering position, it can be provided that a gas, in particular compressed air, is blown between the bracket and the film in the higher second lowering position, for which purpose it is extremely high It may be expedient if the brackets are provided with gas line openings at their sections that come into contact with the film, which are connected to a compressed gas source. It has continued to be extremely useful emphasized to make the blowing pressure and / or the amount of gas supplied over time controllable by means of a control device.
  • a gas in particular compressed air
  • This measure (s) means, in particular, practically no additional effort if - as has already been proposed in accordance with an older proposal by the applicant - the bow-shaped frame sections are designed accordingly in order to control the coefficient of friction between the film material and the lifting frame or the bow-shaped frame sections to be able to.
  • the stirrups can be designed to be pivotable away from the piece goods or the pallet, it having proven to be particularly useful in this regard if the stirrups are to be pivoted in each case about a lower end section of the stirrup support it has furthermore proven to be highly expedient if the brackets can be swiveled as they pivot away from the second working position into the third working position, as will be explained in more detail below using exemplary embodiments.
  • reversible drivable reefing rollers are provided, in a further embodiment in the second or third lowering position with the direction of rotation reversed, as in the case of reefing, again to be brought into engagement with the bottom edge section of the foils in order to form a two-layer or preferably three-layer loosen lower edge area of the lifting frame.
  • FIG. 1 shows a block-shaped piece goods stack, generally designated 1, which consists of several layers of piece goods parts which are to be wrapped with a stretch film hood 2 in order to form a loading unit.
  • the stretch film hood 2 is formed from a gusseted tube 3, which is fed to the device according to the arrows 8 from a gusseted tube supply (not shown), the free end of the gusseted tube 3 according to FIG. 1 already being provided by a lifting frame designated as a whole by 9 (after the gusseted tube has been spread open) 3) has been included.
  • the gusseted tube 3 is welded at a distance from its free end by means of a welding device 4, which essentially consists of two welding conductors, so that a transverse seam 5 is formed, and above the transverse seam 5 by means of one is not shown separator to form a stretch film hood 2 separated, the side surfaces in the state shown in FIG. 2 are already substantially (by means of a reefing device) on the lifting frame 9.
  • a welding device 4 which essentially consists of two welding conductors, so that a transverse seam 5 is formed, and above the transverse seam 5 by means of one is not shown separator to form a stretch film hood 2 separated, the side surfaces in the state shown in FIG. 2 are already substantially (by means of a reefing device) on the lifting frame 9.
  • the four brackets 9 ' which essentially form the lifting frame and are assigned to the corner regions of the piece goods stack 1, are moved apart in the direction of the arrows 6 for the purpose of transverse stretching of the stretch film hood 2. Then the stretched stretch film hood 2 according to FIG. 4 is pulled over the piece goods stack 1 by means of the lifting frame 9, which at the same time forms a reefing frame, FIG. 4 representing an intermediate state in which the piece goods stack 1 is already about half wrapped.
  • the lifting frame 9, which can be driven by means of a drive (not shown), then moves further downward, initially into a position as can be seen in FIG. 7, only one bracket 9 ′ being recognizable in FIG. 7 is, but the other bracket 9 'are at the same height level.
  • stirrups 9 Before the further wrapping process is explained in detail below, the specific configuration of the stirrups 9 'will be explained in more detail, in particular with reference to FIGS. 5 and 6, and reference should first be made to the fact that the piece goods stack 1 - as shown in FIGS. 1 to 4 can be seen - is supported on a (one-way) pallet 10.
  • the lifting frame 9 consists of four substantially C-shaped brackets 9 ', each of which is provided with a plurality of through bores 13, which are connected to a compressed air source, and in each case one in engagement with foils during operation Section of the outside of the relevant lifting frame section 9 'open.
  • a compressed air source is designated 14.
  • Each bracket 9 ' is supported by a support 17 (see FIGS. 5 and 6) formed by a curved, conical sheet metal, the supports 17 each having a recess 18 in the central region. Otherwise, the through bores 13 connected to the compressed air source 14 are connected to a control device 16 (see FIG. 6) by means of which the air pressure or the amount of compressed air supplied over time can be controlled.
  • the stirrups 9 ′ of the lifting frame 9 are first moved to below the upper side 10 ′ of the pallet 10 during the pulling process, FIG. 7 showing an intermediate position and the lower end position has not yet been reached. It can be seen from FIG. 7 that already in this intermediate position the side gusset tube 3 or the (side faces of) the stretch film hood 2 essentially envelop the piece goods stack 1. 7, the brackets 9 'of the lifting frame are not only moved further in the direction of arrow 19 into a first lowering position (see FIG. 8), but at the same time they also continue to move according to arrow 20 the general cargo stack 1 or the pallet 10 moved up. While the clear distance during the essential covering process, taking into account empirically determined tolerance values, was a (see FIG. 7), in the position according to FIGS. 8 and 9 with the value b (see FIG. 9) it is only considerably less.
  • the lifting frame 9 or its bracket 9 ' is then raised again into a second lowered position according to FIG. 9 raised relative to it, in which the film 2 or 3 on the one hand forms a double-layer fold 21 on lower general cargo edge area or on the pallet 10 and on the other hand still to the Ironing 9 'is present (see Fig. 9).
  • brackets 9 'brought in / out of the raised second lowering position according to FIG. 9 out of engagement with the film 2 or 3 and finally - after moving apart against the direction of the arrow 20 in FIG. 7 - back into the starting position pulled back.
  • a gas such as, in particular, compressed air can be blown between the brackets 9' and the film 2 or 3, specifically through the with a compressed air source 14 and through holes 13 controlled by means of a control device 16 (see FIGS. 5, 6), the coefficient of friction between the film and the material of the stirrups 9 ′ being reduced with the air that may be blown in, but the film if necessary can also be "blown off" from the bow-shaped frame sections 9 '.
  • brackets 9 ' can also be pivoted sideways away from the piece goods 1 or the pallet 10, as is indicated by an arrow 22 in FIG. 9, that is to say in the exemplary embodiment shown in each case around a lower end section 23 the respective support 17.
  • additional sliding fingers or the like could possibly also be provided for detaching the film 2 or 3 from the lifting frame 9 or its brackets 9 ', but it is evidently considerably more advantageous if the invention is based on such maintenance-intensive and sensitive additional devices can be dispensed with, although an integral arrangement of such sliding fingers or the like. directly on the lifting frame 9 would still be a technically and economically acceptable solution, while its separate Design and arrangement must be regarded as a highly unsatisfactory solution, both in technical and in economic terms.
  • the reefing device mentioned above can be provided with reversibly driven reefing rollers 24 for contacting the film material on the lifting frame 9 (in particular its supports 17), which in the second or possibly a third, lowered position relative to the second (after reefing again) to be brought into engagement with the lower edge section of the film 2 or 3, but then with a direction of rotation according to the arrow 25 (see FIG. 9), which is opposite to the direction of rotation of the reef rollers when reefing.
  • the end result is a loading unit 26, as is shown schematically in the detail in a representation according to FIGS. 7 to 9 in FIG. 10, that is to say with a three-layer structure lower film edge section 27, which in the illustrated embodiment bears against the upper layer 28 of the pallet 10.
  • Fig. 11 shows a variant in which the lower film edge portion 27 'is formed only in two layers, this film design has been achieved in that the lifting frame 9 has been pivoted away from its second lowered position according to FIG. 9 and / or the reefing rollers 24 at if necessary, not yet swung away reef rollers 24 have brought the lowermost edge of the stretch film hood 2 into the position shown in FIG. 11 (that is to say in an upward contact with the upper layer 28 of the pallet 10).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
EP19910109394 1990-06-14 1991-06-07 Dispositif pour envelopper des marchandises avec un film étirable Expired - Lifetime EP0461564B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19904019041 DE4019041C1 (fr) 1990-06-14 1990-06-14
DE4019041 1990-06-14

Publications (2)

Publication Number Publication Date
EP0461564A1 true EP0461564A1 (fr) 1991-12-18
EP0461564B1 EP0461564B1 (fr) 1995-03-08

Family

ID=6408399

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910109394 Expired - Lifetime EP0461564B1 (fr) 1990-06-14 1991-06-07 Dispositif pour envelopper des marchandises avec un film étirable

Country Status (3)

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EP (1) EP0461564B1 (fr)
DE (2) DE4019041C1 (fr)
DK (1) DK0461564T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2036818A1 (fr) 2007-11-30 2009-03-18 Maschinenfabrik Möllers GmbH Procédé de fabrication d'une unité d'emballage sans palette
EP2199214A1 (fr) * 2008-12-19 2010-06-23 Msk-Verpackungs-Systeme Gesellschaft Mit Beschränkter Haftung Procédé et dispositif destinés à recouvrir une feuille tubulaire ou une enveloppe de feuille sur une pile de marchandises

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4019127C2 (de) * 1990-06-15 1994-11-17 Beumer Maschf Bernhard Verfahren und Vorrichtung zum Umhüllen von Stückgut
DE4307287C2 (de) * 1993-03-09 2001-06-07 Moellers Maschf Gmbh Verfahren zum Umhüllung eines Stapels
DE102010037770B4 (de) * 2010-09-24 2012-06-14 Illinois Tool Works Inc. Verfahren und Vorrichtung zum zumindest teilweisen Umhüllen eines Stückgutstapels mit einem Schlauchabschnitt
EP3398861A1 (fr) * 2017-05-04 2018-11-07 Erin Intellectual Property Limited Procédé et programme informatique destinés à emballer une pile de marchandise et unité d'emballage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1333125A (en) * 1971-12-09 1973-10-10 Dapplications Thermiques Sa So Machines for placing envelopes over objects to be packaged
FR2566739A1 (fr) * 1984-07-02 1986-01-03 Newtec Internal Sa Procede pour realiser un pli annulaire d'extremite sur une gaine tubulaire, en particulier une gaine plastique d'emballage et machine pour sa mise en oeuvre
DE9001319U1 (de) * 1990-02-06 1990-04-12 MSK-Verpackungs-Systeme GmbH, 47533 Kleve Vorrichtung zum Überziehen von Stretchfolienhauben über einen Gutstapel
EP0344815B1 (fr) * 1988-06-03 1992-03-04 Bernhard Beumer Maschinenfabrik KG Procédé et dispositif pour envelopper des marchandises, en particulier des piles de marchandises avec une housse de film étirable

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1298444B (de) * 1966-10-19 1969-06-26 Alkor Oerlikon Plastic Gmbh Transport- und Lagereinheit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1333125A (en) * 1971-12-09 1973-10-10 Dapplications Thermiques Sa So Machines for placing envelopes over objects to be packaged
FR2566739A1 (fr) * 1984-07-02 1986-01-03 Newtec Internal Sa Procede pour realiser un pli annulaire d'extremite sur une gaine tubulaire, en particulier une gaine plastique d'emballage et machine pour sa mise en oeuvre
EP0344815B1 (fr) * 1988-06-03 1992-03-04 Bernhard Beumer Maschinenfabrik KG Procédé et dispositif pour envelopper des marchandises, en particulier des piles de marchandises avec une housse de film étirable
DE9001319U1 (de) * 1990-02-06 1990-04-12 MSK-Verpackungs-Systeme GmbH, 47533 Kleve Vorrichtung zum Überziehen von Stretchfolienhauben über einen Gutstapel

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2036818A1 (fr) 2007-11-30 2009-03-18 Maschinenfabrik Möllers GmbH Procédé de fabrication d'une unité d'emballage sans palette
EP2199214A1 (fr) * 2008-12-19 2010-06-23 Msk-Verpackungs-Systeme Gesellschaft Mit Beschränkter Haftung Procédé et dispositif destinés à recouvrir une feuille tubulaire ou une enveloppe de feuille sur une pile de marchandises
WO2010078915A1 (fr) * 2008-12-19 2010-07-15 Msk-Verpackungs-Systeme Gmbh Procédé et dispositif de couverture d'une pile d'objets au moyen d'une feuille extrudée en gaine ou d'une housse en film étirable
EP2371716A1 (fr) * 2008-12-19 2011-10-05 MSK - Verpackungs-Systeme GmbH Procédé et dispositif destinés à recouvrir une feuille tubulaire ou une enveloppe de feuille sur une pile de marchandises
CN102300775B (zh) * 2008-12-19 2014-04-02 Msk包装系统有限公司 将软管薄膜或者薄膜罩包覆到堆装货物上的方法和设备

Also Published As

Publication number Publication date
DK0461564T3 (da) 1995-06-26
EP0461564B1 (fr) 1995-03-08
DE59104843D1 (de) 1995-04-13
DE4019041C1 (fr) 1991-10-17

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