EP0461564B1 - Vorrichtung zum Umhüllen von Stückgut mit Stretchfolie - Google Patents

Vorrichtung zum Umhüllen von Stückgut mit Stretchfolie Download PDF

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Publication number
EP0461564B1
EP0461564B1 EP19910109394 EP91109394A EP0461564B1 EP 0461564 B1 EP0461564 B1 EP 0461564B1 EP 19910109394 EP19910109394 EP 19910109394 EP 91109394 A EP91109394 A EP 91109394A EP 0461564 B1 EP0461564 B1 EP 0461564B1
Authority
EP
European Patent Office
Prior art keywords
film
bowed
lowered position
unit load
pallet
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
EP19910109394
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0461564A1 (de
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
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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/de
Application granted granted Critical
Publication of EP0461564B1 publication Critical patent/EP0461564B1/de
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 device for wrapping piece goods with stretch film according to the preamble of claim 1.
  • reinforcement of the film wrapping appears to be desirable, particularly in the case of packaged goods supported on a pallet in the lower edge region, since pallets made of wood are regularly not smooth, especially on their end faces, and accordingly tend to perforate the film forming the wrapping, so that in such cases the Weather protection in single-layer film wrapping is endangered to this extent.
  • FR-A-2 566 739 discloses a method for wrapping piece goods stacked on pallets with a film hood, in which the lower hood edge is turned over once or twice for reinforcement, the clamping pliers or the like holding the hood edge. maintain an unchanged distance with respect to their relative position to the stack of goods. This often leads to poor positioning of the hood edge on the stack of items or on the pallet, in particular when the hood is stretched vertically considerably when pulled over.
  • the present invention has for its object to improve the known generic device in such a way that the reinforced lower edge portion of the film wrapping compared to the rest of the film wrapping in a technically simple and economically satisfactory manner can be safely positioned at the intended location of the packaged goods / pallet.
  • the bracket at least are to be moved closer to the piece goods between the first and second lowering positions 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.
  • 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 which come into engagement with the film and 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 according to an older proposal by the applicant - the bow-shaped frame sections are designed in any case 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 brackets can be designed to be pivotable away from the piece goods or the pallet, it having proven to be particularly expedient if the brackets are to be pivoted in each case about a lower end section of the bracket 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.
  • reversibly 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, these re-engaging with the bottom edge portion 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, designated as a whole by 1, which consists of several layers of piece goods parts which are intended 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 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 consists essentially of two welding conductors, so that a transverse seam 5 is formed, and above the transverse seam 5 by means of one 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 consists essentially of two welding conductors, so that a transverse seam 5 is formed, and above the transverse seam 5 by means of one 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 respectively assigned to the corner regions of the stack of articles 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 stack of goods 1 by means of the lifting frame 9, which also forms a reefing frame, FIG. 4 showing an intermediate state in which the stack of goods 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 brackets 9 'are at the same 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 brackets 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 gusseted tube 3 or the (side surfaces 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 this, 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).
  • a gas in particular compressed air
  • a control device 16 see FIGS. 5, 6
  • the coefficient of friction between the film and the material of the stirrups 9 ′ being initially reduced with the possibly blown-in air, 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 clearly 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. would be a technically and economically acceptable solution directly on the lifting frame 9, 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 drivable reefing rollers 24 for impacting 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) are 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 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 in accordance with 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 bottom edge of the stretch film hood 2 into the position shown in FIG. 11 (that is to say in an upward contact with the top 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 Vorrichtung zum Umhüllen von Stückgut mit Stretchfolie Expired - Lifetime EP0461564B1 (de)

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=6408399

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910109394 Expired - Lifetime EP0461564B1 (de) 1990-06-14 1991-06-07 Vorrichtung zum Umhüllen von Stückgut mit Stretchfolie

Country Status (3)

Country Link
EP (1) EP0461564B1 (enrdf_load_stackoverflow)
DE (2) DE4019041C1 (enrdf_load_stackoverflow)
DK (1) DK0461564T3 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2036818A1 (de) 2007-11-30 2009-03-18 Maschinenfabrik Möllers GmbH Verfahren zum Herstellen einer palettenlosen Verpackungseinheit
US8875480B2 (en) 2008-12-19 2014-11-04 Msk-Verpackungs-Systeme Gmbh Method of pulling a film tube or hood down over a stack of objects

Families Citing this family (5)

* 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
EP1059233A1 (de) 1999-04-16 2000-12-13 Kl- Lachenmeier A/S Verfahren und Vorrichtung zum Verpacken von Gegenständen in einer Folienhaube
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 (de) * 2017-05-04 2018-11-07 Erin Intellectual Property Limited Verfahren und computerprogramm zum umhüllen eines gutstapels sowie verpackungseinheit

Family Cites Families (5)

* 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
GB1333125A (en) * 1971-12-09 1973-10-10 Dapplications Thermiques Sa So Machines for placing envelopes over objects to be packaged
FR2566739B3 (fr) * 1984-07-02 1986-11-21 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
DE3918311C3 (de) * 1988-06-03 1997-10-09 Beumer Maschf Bernhard Verfahren und Vorrichtung zum Umhüllen von Stückgut, insbesondere Stückgutstapeln, mit einer Stretchfolienhaube
DE9001319U1 (de) * 1990-02-06 1990-04-12 MSK-Verpackungs-Systeme GmbH, 47533 Kleve Vorrichtung zum Überziehen von Stretchfolienhauben über einen Gutstapel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2036818A1 (de) 2007-11-30 2009-03-18 Maschinenfabrik Möllers GmbH Verfahren zum Herstellen einer palettenlosen Verpackungseinheit
US8875480B2 (en) 2008-12-19 2014-11-04 Msk-Verpackungs-Systeme Gmbh Method of pulling a film tube or hood down over a stack of objects

Also Published As

Publication number Publication date
DE4019041C1 (enrdf_load_stackoverflow) 1991-10-17
DE59104843D1 (de) 1995-04-13
EP0461564A1 (de) 1991-12-18
DK0461564T3 (da) 1995-06-26

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