EP0564971B1 - Dispositif et procédé pour fabriquer une pile d'articles - Google Patents

Dispositif et procédé pour fabriquer une pile d'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
Authority
EP
European Patent Office
Prior art keywords
spreading
rollers
stack
cover
finger
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
EP93105325A
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German (de)
English (en)
Other versions
EP0564971A2 (fr
EP0564971A3 (en
Inventor
Richard Birkenfeld
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
Original Assignee
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6456044&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0564971(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Maschinenfabrik Moellers GmbH filed Critical Maschinenfabrik Moellers GmbH
Publication of EP0564971A2 publication Critical patent/EP0564971A2/fr
Publication of EP0564971A3 publication Critical patent/EP0564971A3/de
Application granted granted Critical
Publication of EP0564971B1 publication Critical patent/EP0564971B1/fr
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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 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)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Stacking Of Articles And Auxiliary Devices (AREA)
  • Basic Packing Technique (AREA)

Claims (4)

  1. Dispositif pour la formation d'un empilage de produits par assemblage et enrobage d'une pile formée sur un support au moyen d'un film Stretch avec un dispositif d'extraction de tuyau de film Stretch, un dispositif écarteur monté en aval de celui-ci pour l'écartement de l'extrémité libre du tuyau, un dispositif de séparation et de soudage (9, 10) pour séparer une section de tuyau et former un capuchon Stretch et avec un dispositif de revêtement de capuchon qui comporte au moins quatre doigts écarteurs (13) mobiles dans la direction horizontale et verticale, qui reçoivent de façon pliée en soufflet le capuchon dans les quatre zones de coin, un rouleau d'entraînement ajustable (16) en regard du doigt écarteur respectif (13) étant affecté à chaque doigt écarteur (13) sur le côté extérieur, rouleau d'entraînement au moyen duquel le capuchon est amené dans la position pliée en forme de soufflet et le doigt écarteur respectif (13) et le rouleau d'entraînement affecté (16) étant disposés sur un chariot commun (12) mobile verticalement,
    caractérisé en ce que
       chaque doigt écarteur (13) est muni d'un évidement (19) dans lequel sont disposés deux rouleaux juxtaposés (20, 20a) qui sont logés de façon rotative symétriquement par rapport à un plan horizontal contenant l'axe de rotation (22) du rouleau d'entraînement (16), les rouleaux (20, 20a) faisant saillie localement sur le côté dirigé vers le capuchon (17) et le rouleau d'entraînement (16) par rapport à la face du doigt écarteur (13a) et le rouleau d'entraînement (16) étant en contact dans une position déplacée vers l'intérieur avec les rouleaux (20, 20a) avec intercalage du capuchon en film Stretch (17) tandis que sur le bord inférieur de l'évidement (19), la face des doigts écarteurs (13a) est inclinée vers l'intérieur.
  2. Dispositif selon la revendication 1,
    caractérisé en ce que
       au moins deux rouleaux (20, 20a) sont respectivement disposés côte à côte dans l'évidement (19).
  3. Dispositif selon la revendication 1 ou l'une des
    revendications suivantes, caractérisé en ce que
       sur le chariot respectif (12) mobile verticalement, est disposé un élément porteur (27) qui porte le rouleau d'entraînement (16) et peut se déplacer à angle droit (flèche 33) par rapport à la direction de déviation radiale (flèche 26) du doigt écarteur (13).
  4. Dispositif selon la revendication 3,
    caractérisé en ce que
       l'élément porteur (27) est de plus déplaçable le long du chariot (12).
EP93105325A 1992-04-03 1993-03-31 Dispositif et procédé pour fabriquer une pile d'articles Expired - Lifetime EP0564971B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4211297 1992-04-03
DE4211297A DE4211297A1 (de) 1992-04-03 1992-04-03 Vorrichtung und Verfahren zur Bildung eines Gutstapels

Publications (3)

Publication Number Publication Date
EP0564971A2 EP0564971A2 (fr) 1993-10-13
EP0564971A3 EP0564971A3 (en) 1993-12-08
EP0564971B1 true EP0564971B1 (fr) 1997-05-07

Family

ID=6456044

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93105325A Expired - Lifetime EP0564971B1 (fr) 1992-04-03 1993-03-31 Dispositif et procédé pour fabriquer une pile d'articles

Country Status (3)

Country Link
EP (1) EP0564971B1 (fr)
AT (1) ATE152682T1 (fr)
DE (2) DE4211297A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20109692U1 (de) * 2001-06-13 2002-10-24 Beumer Maschinenfabrik Gmbh & Co. Kg, 59269 Beckum Vorrichtung zum Umhüllen von Stückgut mittels einer Stretchfolienhaube
EP1266829A1 (fr) 2001-06-13 2002-12-18 Beumer Maschinenfabrik GmbH & Co. KG Procédé et appareil pour envelopper des marchandises, en particulier des piles de marchandises, avec un film étirable, ainsi que la charge obtenue

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2194656T3 (es) * 2000-08-09 2003-12-01 Lachenmeier As Procedimiento y aparato para empaquetar objetos.
DE20101909U1 (de) * 2001-01-25 2002-06-13 MSK-Verpackungs-Systeme GmbH, 47533 Kleve Vorrichtung zum Umhüllen eines Gutstapels
DK1275581T3 (da) * 2001-07-11 2006-05-08 Moellers Maschf Gmbh Fremgangsmåde og apparat til at trække en strækforliekappe over en godsstabel
KR20130089035A (ko) * 2012-02-01 2013-08-09 삼성전자주식회사 수축 포장 시스템
NL2017863B1 (nl) * 2016-11-24 2018-06-01 F3 Design B V Verpakkingmachine voor het aanbrengen van een folie om een te verpakken voorwerp
US11492155B2 (en) 2020-05-14 2022-11-08 Signode Industrial Group Llc Stretch-hood machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9104072U1 (de) * 1991-04-04 1991-06-20 Develog, Reiner Hannen & Cie, Courtelary Vorrichtung zum Überziehen von Stretchfolienhauben über einen Gutstapel
EP0461667A1 (fr) * 1990-06-15 1991-12-18 Bernhard Beumer Maschinenfabrik KG Procédé et dispositif pour envelopper des marchandises avec un film étirable

Family Cites Families (5)

* 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
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
DE9001321U1 (de) * 1990-02-06 1990-04-12 Develog, Reiner Hannen & Cie, Corgémont Vorrichtung zum Überziehen von Strechfolienhauben über einen Gutstapel
DE4037105C1 (en) * 1990-11-22 1992-03-05 Brega Verpackungsmaschinen-Anwendungstechnik Gmbh, 5884 Halver, De Stretch film packaging machine - incorporates rollers running at different speeds for stretching effect

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0461667A1 (fr) * 1990-06-15 1991-12-18 Bernhard Beumer Maschinenfabrik KG Procédé et dispositif pour envelopper des marchandises avec un film étirable
DE9104072U1 (de) * 1991-04-04 1991-06-20 Develog, Reiner Hannen & Cie, Courtelary 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
DE20109692U1 (de) * 2001-06-13 2002-10-24 Beumer Maschinenfabrik Gmbh & Co. Kg, 59269 Beckum Vorrichtung zum Umhüllen von Stückgut mittels einer Stretchfolienhaube
EP1266829A1 (fr) 2001-06-13 2002-12-18 Beumer Maschinenfabrik GmbH & Co. KG Procédé et appareil pour envelopper des marchandises, en particulier des piles de marchandises, avec un film étirable, ainsi que la charge obtenue

Also Published As

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

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