EP1063169A1 - Procede et appareil pour envelopper une pile d' objets ainsi que l' ensemble obtenu par ce procede - Google Patents

Procede et appareil pour envelopper une pile d' objets ainsi que l' ensemble obtenu par ce procede Download PDF

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Publication number
EP1063169A1
EP1063169A1 EP00112969A EP00112969A EP1063169A1 EP 1063169 A1 EP1063169 A1 EP 1063169A1 EP 00112969 A EP00112969 A EP 00112969A EP 00112969 A EP00112969 A EP 00112969A EP 1063169 A1 EP1063169 A1 EP 1063169A1
Authority
EP
European Patent Office
Prior art keywords
hood
stack
piece goods
hose
welding
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.)
Withdrawn
Application number
EP00112969A
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German (de)
English (en)
Inventor
Richard Birkeneld
Peter Döhring
Walter Mühlisch
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
Application filed by Maschinenfabrik Moellers GmbH filed Critical Maschinenfabrik Moellers GmbH
Publication of EP1063169A1 publication Critical patent/EP1063169A1/fr
Withdrawn legal-status Critical Current

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    • 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 wrapping a stack of piece goods, for the tubular film, the circumference of which is less than that of the wrapped General cargo stack, subtracted from a supply to form a hose hood, opened, reefed lengthways and separated from the tubular film and closed is, the matured hose hood is subsequently stretched in the transverse direction and is pulled over the general cargo stack.
  • the invention further relates to a device for enveloping a stack of piece goods according to the above method, the means for forming a hose hood and a transverse expansion device for the hose hood Covering device for covering the hose hood over the stack of packaged goods includes.
  • the invention further relates to one in particular according to the above method and / or packaging unit to be formed using the aforementioned device.
  • the piece goods stack is replaced by one Shrink film surrounded by a film whose circumference is smaller than the circumference of the for wrapping general cargo.
  • the film is stretched transversely in the elastic area and then dragged over the general cargo stack. The transverse expansion relaxes here partially.
  • the film hood lies against the piece goods stack so that it is on the top side and is wrapped on its side surfaces.
  • the slide is usually under a pallet, which carries the piece goods stack, pulled to form a stable piece goods, Pallet and hose hood to create existing packaging unit.
  • the hose hood is covered by a continuous top Sealed weld. Due to the permanent stretch of the over the The stacked hose hood results from the four corners of the General cargo stack towards the weld seam, but not parallel to the side surfaces, but diagonally inward extending lines. Meet at the weld there are two train lines that go from your intersection V-shaped to the respective corners come off. Within the V-shaped area formed by the two traction lines a lug-shaped hood section protrudes from the top of the piece goods stack. This section of the hood can easily be damaged.
  • EP 0 399 540 proposes the width of the weld seam to the width of the piece goods stack, i.e. that extending parallel to the weld Adjust the side surface of the general cargo stack.
  • This state of the art suggests when using a gusseted tube that is two parallel to each other running first side surfaces and two V-shaped inwardly folded second Has side surfaces to form a weld whose length is the width of the corresponds approximately to the first side faces.
  • Hood section proposes DE 44 01 613, below which the hose hood a sealing seam closing the adjacent layers of the second side surface of the gusseted hose penetrating weld seam or but the weld seam closing the hose hood is bent and parallel to to form the first side surfaces in such a way that the weld seam on Edge of the first side surface has a greater distance from the cutting edge than in the middle.
  • the present invention has for its object the previously known method and the previously known device and thus also a packaging unit produced therewith to develop such that the problems described above in Avoid the area of the weld seam or at least reduce it to a tolerable level become.
  • the generic part is used to solve the procedural part of the task Process further developed in that a from the top of the piece goods stack protruding hood section is placed on the contour of the general cargo stack.
  • the piece goods stack is first used in the usual way Way with a transverse and, if necessary, longitudinal expansion of the piece goods stack hose hood covered. Measures to customize the A weld seam to the dimensions of the piece goods stack is not required. Also it is not necessary to adjust the top of the hose hood in a special way, to form, for example, a protruding pod-shaped hood section to avoid.
  • the method according to the invention takes a different route and uses one separate process step in which after pulling on the hose hood a stacked hood section is placed on the contour of the stack becomes.
  • the method according to the invention is suitable for economical wrapping of general cargo stacks of different dimensions, since an adjustment of the Process parameters for different dimensions of packaged goods are not required is. A hood section protruding from the top of the piece goods stack is created subsequently.
  • the Hood section connected to the hose hood that is pulled onto the piece goods stack.
  • the protruding hood section can on that part of the Hose hood are glued on, which depicts the contour of the stack.
  • the hood section by means of pulse welding to connect with the hose hood, in particular with a Welding device that a variety instead of a continuous welding bar of welding points arranged in a line.
  • the hood section by applying hot air to the contour of the general cargo stack.
  • Such a process step can also be carried out in Connection with a welded joint between the protruding stack of general cargo and the hose hood are carried out, especially if on the one hand, the weld seam was placed in such a way that at the top of the hood section running tensile stresses also in the the hose hood that the Depicts the general cargo stack in its contour and connects the hood section with one another Weld seam is initiated and on the other hand an increased warming of the live hose hood avoided by the inflated hot air becomes.
  • the method according to the invention is particularly suitable for wrapping a General cargo stack with a highly elastic film with a longitudinal expansion of at least 50% compared to the unstretched hose hood on the piece goods stack is created.
  • a highly elastic film with a longitudinal expansion of at least 50% compared to the unstretched hose hood on the piece goods stack is created.
  • Even the most elastic Film usually not only stretched considerably in the longitudinal direction, but also in Transverse direction, so that the scope of the supplied flat tubular film is essential is smaller than the circumference of the piece goods stack to be wrapped, so that from the EP 0 399 540 previously known method can only be carried out if the Tubular film is stretched before forming the weld, which is the above described disadvantages brings with it.
  • the hood section is removed from a device when the piece goods stack is being conveyed away, which usually means for forming a hose hood and a covering device to cover the hose hood over the piece goods stack, to the Contour of the general cargo stack created.
  • an application agent acts on the protruding hood section through which this is applied to the contour of the general cargo stack. If this application means in Height direction of the piece goods stack is forced, can be a complex Regulation, the sensors for determining the individual height and contour of a General cargo stacks and corresponding adjusting means for height adjustment of the mooring means has to be shown.
  • the present Invention further developed the generic device in that at least a means for creating a protruding from the top of the piece goods stack Hood section is provided on the contour of the stack of goods.
  • Any means can be used in such a way subsequently on a stack of piece goods covered with a stretched hose hood acts in such a way that the section retrofits the contour of the piece goods stack is created.
  • the inventive has Device preferably a height-adjustable application means.
  • This in a preferred embodiment of the present invention comprises a scanning means to determine the respective height of the piece goods stack, considering it on a simple design is preferred that the scanning means with the Interacting surface of the general cargo stack. So the scanning means is with this preferred embodiment, no contact-free sensor. Rather, that follows at the Contouring scanning means exactly the contour of the stack of items, so that a Collision of the piece goods stack with the height-adjustable attachment means safely and is prevented in a simple manner.
  • this is Means for placing arranged on a frame, which also means for forming a Hose hood and the covering device carries. Usually they become enveloping packaged goods individually on a horizontal transport route Rack fed. The feed movement is stopped there. The general cargo stack is envelops. The stack of general cargo is then removed. It is therefore particularly preferable to arrange the application means in the conveying direction behind the covering device. The packaging unit thus starts when it is removed from the frames past the mooring equipment. This only has to be moved in the vertical direction, for full action to create all protruding hood sections to ensure the top of the general cargo stack.
  • an additional one preferably as an application means welding device to be trained preferably in the form of a welding rail or in the form of linearly arranged welding spots on one Drum is arranged that is rotatably connected to the surface of the piece goods stack interacting scanning wheel is connected to the top of the piece goods stack swept over in the direction of conveyance with the application means. All protruding hood sections are placed on the contour.
  • Embodiment of the present invention proposed a sensor to provide, which emits a signal when the drum rotates, by which the Welding device is operated.
  • the welding device on the contour of the piece goods stack is particularly preferred customizable.
  • This adaptation is in accordance with a further preferred embodiment of the present invention achieved in that an elastically adjustable carrier is provided.
  • This carrier is, for example, by a resilient Suspension of the welding rail formed. This is preferably in separate sections divided in order to be as adaptable as possible to the contour of the piece goods stack to achieve.
  • the device according to the invention is preferably by means of a covering device further developed, which has a longitudinal expansion device with at least four at least Has longitudinally movable spreading fingers, each of which has at least one drive roller is assigned to the supplied tubular film in a known manner like a bellows to put over the spreading fingers.
  • the drive roller in an axially extending same concave recess retractable, defined around the hose hood and flat and u can.
  • a device is provided with the stacked piece goods due to the high elongation the film can be lashed into a stable packaging unit without a the hood section impairing the usability and durability from the top of the general cargo stack protrudes.
  • the drawing is based on representations of various embodiments of the limited inventive means for creating a hood section, which otherwise protrudes from the contour of the general cargo stack. That being said, includes the device for wrapping a piece of piece goods from the prior art generally known plant parts, so that a more detailed description can be dispensed with here.
  • the means to create the otherwise protruding Hood section to the contour of the piece goods stack can the frame, which has the means for forming a hose hood and the covering device, be assigned, or be arranged on a separate frame to which the Packaging unit is fed after covering the hose hood.
  • FIG. 1 shows a piece goods stack 2 which is enveloped by a hose hood 4, and that stands on a pallet 6.
  • a hose hood 4 One which closes the hose hood 4 on the upper side Weld 8 runs parallel in the embodiment shown in FIG to the drawing level.
  • hood sections 10 On the top of the piece goods stack 2 are two hood sections 10 in the form of protruding corners shown. As can be seen from the top view in FIG. 2, corresponds to the length of the two tips 10 roughly corresponds to the length of the weld seam 8 from the edges of the general cargo stack to the center at the top of the Hose hood extending linear tension areas in the Hose hood, the hood sections 10 are essentially stress-free and protrude the piece goods stack 2 on its top.
  • the General cargo stack 2 at a separate station for creating the from the top of the piece section of hood projecting 10.
  • a Not shown frame provided which has a height adjustable Stamp carries 12, on the underside of the general cargo stack 2 two extending substantially parallel to the top of the stack 2
  • Welding rails 14a, b are attached.
  • the welding rails 14a, b run at the embodiment shown essentially at right angles to the weld 8 and are each assigned a tip 10. It can be seen that the length of the welding rails 14 formed in the exemplary embodiment shown the length of the hood sections 10 are adjusted. Otherwise, the welding rails 14 aligned such that they are approximately with the end regions of the hood sections 10 coincide.
  • Such an embodiment can be indicated be if the surface of the piece goods stack 2 itself regularly a certain has constant contouring.
  • Can also be contoured by a Welding rail 14 'areas can be specified in which the hood sections 10 pressed with high pressure against the contour of the stack 2 and those where the hood sections 10 are pressed only with slight pressure become.
  • the contouring of the welding rail 14 ' runs in the case of the one shown in FIG Embodiment accordingly at right angles to the weld 8.
  • FIGS to 4 shown embodiments of the stamp 12 lowered and the hood sections 10 through the welding rail 14, 14 'against the contour of the piece goods stack 2
  • Hose hood 4 depicting the top side is pressed on.
  • One for welding the hood section 10 with the hose hood 4 required amount of heat is introduced.
  • the stamp 12 is raised and the packaging unit formed in this way promoted.
  • FIGS. 5 and 6 show a further exemplary embodiment of a means for applying of the hood section protruding from the top of the piece goods stack 2 10 shown.
  • welding rails are 14 distributed over the circumference of a drum 16.
  • This 16 is rotatably mounted and non-rotatably connected to two scanning wheels 18. If now the general cargo stack 2 in the conveying direction according to arrow 20 after pulling on the hose hood is transported, the piece goods stack 2 runs continuously below the drum 16 through, which is preferably attached to the frame on which also Covering the hose hood has been carried out.
  • one of the contours of the general cargo stack 2 can be positively driven control
  • the drum 16 is together with the scanning wheels 18 placed on the top of the piece goods stack 2.
  • the scanning wheels 18 placed on the top of the piece goods stack 2.
  • the welding rails 14 roll on the top of the General cargo stack 2 led from its surface contour and so press the protruding Hood sections 10 against the contour of the piece goods stack 2.
  • the welding spots are preferably linear in the form of one or more coils on the Circumferential surface of the drum 16 arranged to ensure the best possible enforcement all hood sections 10 protruding from the contour of the piece goods stack 2 to effect with welding points through which the hood sections 10 with the closely fitting Hose hood 4 are connected.
  • a stamp 12 is also provided here in the present case carries two hot air devices 24, which on the respective hood sections 10 are aligned. To create the hood sections 10, these are with the Hot air blowers 24 heated, taking care that an amount of heat and the direction of flow be chosen such that heating is mainly on the hood sections and the live, the contour of the piece goods stack 2 depicting hose hood 4 on its upper side only within limits is heated.
  • Shielding means may be provided which comprises a plate covering the top of the piece goods stack 2 and covers essentially only the protruding ones Hood sections 10 recesses. This plate is used, for example, when lowering the Stamp 12 pressed against the top of the stack 2 to the surface to protect the hose hood 4 against excessive heating.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
EP00112969A 1999-06-21 2000-06-20 Procede et appareil pour envelopper une pile d' objets ainsi que l' ensemble obtenu par ce procede Withdrawn EP1063169A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19928261 1999-06-21
DE1999128261 DE19928261A1 (de) 1999-06-21 1999-06-21 Verfahren und Vorrichtung zum Umhüllen eines Stückgutstapels sowie eine nach dem Verfahren hergestellte Verpackungseinheit

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EP1063169A1 true EP1063169A1 (fr) 2000-12-27

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EP00112969A Withdrawn EP1063169A1 (fr) 1999-06-21 2000-06-20 Procede et appareil pour envelopper une pile d' objets ainsi que l' ensemble obtenu par ce procede

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EP (1) EP1063169A1 (fr)
DE (1) DE19928261A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002058996A1 (fr) * 2001-01-25 2002-08-01 MSK-Verpackungs-Systeme Gesellschaft mit beschränkter Haftung Procede pour disposer une bande tubulaire plate en film etirable sur une pile de marchandises

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3852937A (en) * 1968-08-06 1974-12-10 Auburn Eng Inc Shrink-wrapping method and apparatus
DE3707877A1 (de) 1987-03-11 1988-09-22 Lachenmeier Kurt Aps Verfahren und vorrichtung zum verpacken von gegenstaenden mit einer bahnfoermigen kunststoffolie
EP0344815A1 (fr) * 1988-06-03 1989-12-06 Bernhard Beumer Maschinenfabrik KG Procédé et dispositif pour envelopper des marchandises, en particulier des piles de marchandises avec une housse de film étirable
EP0399540A1 (fr) 1989-05-26 1990-11-28 Bernhard Beumer Maschinenfabrik KG Procédé et dispositif pour envelopper des marchandises avec une housse de film étirable et ensemble d'emballage formé avec ceux-ci
EP0465370A2 (fr) * 1990-07-05 1992-01-08 Newtec International Procédé de suremballage d'une charge palettisée au moyen d'une housse en film plastique étirable
DE4401613A1 (de) 1994-01-20 1995-07-27 Lachenmeier Kurt Aps Folienhaube zum Überziehen über Güterstapel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3852937A (en) * 1968-08-06 1974-12-10 Auburn Eng Inc Shrink-wrapping method and apparatus
DE3707877A1 (de) 1987-03-11 1988-09-22 Lachenmeier Kurt Aps Verfahren und vorrichtung zum verpacken von gegenstaenden mit einer bahnfoermigen kunststoffolie
EP0344815A1 (fr) * 1988-06-03 1989-12-06 Bernhard Beumer Maschinenfabrik KG Procédé et dispositif pour envelopper des marchandises, en particulier des piles de marchandises avec une housse de film étirable
EP0399540A1 (fr) 1989-05-26 1990-11-28 Bernhard Beumer Maschinenfabrik KG Procédé et dispositif pour envelopper des marchandises avec une housse de film étirable et ensemble d'emballage formé avec ceux-ci
EP0465370A2 (fr) * 1990-07-05 1992-01-08 Newtec International Procédé de suremballage d'une charge palettisée au moyen d'une housse en film plastique étirable
DE4401613A1 (de) 1994-01-20 1995-07-27 Lachenmeier Kurt Aps Folienhaube zum Überziehen über Güterstapel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002058996A1 (fr) * 2001-01-25 2002-08-01 MSK-Verpackungs-Systeme Gesellschaft mit beschränkter Haftung Procede pour disposer une bande tubulaire plate en film etirable sur une pile de marchandises

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Publication number Publication date
DE19928261A1 (de) 2000-12-28

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