EP0200941B1 - Device for covering and shrinking piles of goods with shrinkable hoods - Google Patents

Device for covering and shrinking piles of goods with shrinkable hoods Download PDF

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Publication number
EP0200941B1
EP0200941B1 EP86104862A EP86104862A EP0200941B1 EP 0200941 B1 EP0200941 B1 EP 0200941B1 EP 86104862 A EP86104862 A EP 86104862A EP 86104862 A EP86104862 A EP 86104862A EP 0200941 B1 EP0200941 B1 EP 0200941B1
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EP
European Patent Office
Prior art keywords
goods
shrinking
stack
shrinkable
nozzle arrangement
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
EP86104862A
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German (de)
French (fr)
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EP0200941A1 (en
Inventor
Reiner W. Hannen
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.)
MSK Verpackungs Systeme GmbH
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MSK Verpackungs Systeme GmbH
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Application filed by MSK Verpackungs Systeme GmbH filed Critical MSK Verpackungs Systeme GmbH
Priority to AT86104862T priority Critical patent/ATE66656T1/en
Publication of EP0200941A1 publication Critical patent/EP0200941A1/en
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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
    • B65B53/00—Shrinking wrappers, containers, or container covers during or after packaging
    • B65B53/02—Shrinking wrappers, containers, or container covers during or after packaging by heat
    • B65B53/06—Shrinking wrappers, containers, or container covers during or after packaging by heat supplied by gases, e.g. hot-air jets
    • B65B53/066—Mobile frames, hoods, posts or the like

Definitions

  • a nozzle arrangement assigned to the blower is provided for producing an air curtain which extends essentially horizontally through the device and which detects and removes warm gases as it rises as warm gases shrink.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Basic Packing Technique (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Packaging Of Special Articles (AREA)

Abstract

An apparatus for packaging a stack of goods by shrinking a shrinkable foil covering on it comprises a delivery mechanism for drawing a foil tubing from a roll of tubing which cuts away a piece from the foil tubing and closes the top of that piece by an end weld seam, and a framelike vertically movable shrinking mechanism which heats all sides of the piece covering the stack of goods. To avoid a premature shrinking of the shrinkable foil covering or the foil tubing a nozzle device for making an air curtain extending substantially horizontally is provided under the delivery mechanism but above the range of travel of the shrinking mechanism and a blower for providing the air flow for the air curtain is connected with the nozzle device.

Description

Die Erfindung betrifft eine Vorrichtung zum Überziehen und Einschrumpfen von Gutstapeln mit Schrumpfhauben, mit einem Stellplatz oder einem Förderer für den Gutstapel und einer darüber angeordneten Einrichtung zum Abziehen eines Folienschlauches von einem Wickel, wobei ein vom Folienschlauch abgetrennter und mit einer Kopfschweißnaht versehener Abschnitt als Schrumpfhaube von oben über den Gutstapel gezogen wird und mit einer rahmenartigen, vertikal beweglichen Schrumpfeinrichtung allseitig mit Wärmeenergie beaufschlagt wird, wobei ferner unterhalb der Einrichtung zum Abziehen, jedoch oberhalb des Bewegungsbereiches der Schrumpfeinrichtung mit einem Gebläse eine Luftströmung erzeugt wird.The invention relates to a device for covering and shrinking stacks of goods with shrink hoods, with a parking space or a conveyor for the stack of goods and a device arranged above for pulling a film tube from a roll, with a section separated from the film tube and provided with a head weld seam as a shrink hood of is pulled above the stack of goods and a frame-like, vertically movable shrinking device is subjected to heat energy on all sides, an air flow being further generated below the pulling device but above the movement range of the shrinking device with a blower.

Mit einer derartigen Vorrichtung können Gutstapel weitgehend automatisch mit Schrumpfhauben versehen und eingeschrumpft werden. Der von einem Wickel abgezogene Folienschlauch passiert oberhalb des Gutstapels eine Spreizeinrichtung und wird dadurch geöffnet, so daß er über den Gutstapel gezogen werden kann. Beim Abtrennen des als Schrumpfhaube dienenden Abschnittes vom Folienschlauch wird gleichzeitig die Kopfschweißnaht gelegt, so daß die Schrumpfhaube oben geschlossen ist. Die Schrumpfhaube wird anschließend durch Zufuhr von Wärmeenergie geschrumpft. Das kann durch Infrarotstrahlung oder mit Hilfe von Heißluft erfolgen. Die rahmenartige Schrumpfeinrichtung wird in vertikaler Richtung über den mit der Schrumpfhaube versehenen Gutstapel geführt, wobei Wärmeenergie abgegeben und die Schrumpfhaube geschrumpft wird.With such a device, stacks of goods can largely be automatically provided with shrink hoods and shrink-fitted. The film tube drawn off from a roll passes a spreading device above the stack of goods and is thereby opened so that it can be pulled over the stack of goods. When the section serving as a shrink hood is separated from the film tube, the head weld seam is placed at the same time, so that the shrink hood is closed at the top. The shrink hood is then shrunk by supplying thermal energy. This can be done by infrared radiation or with the help of hot air. The frame-like shrinking device is guided in the vertical direction over the stack of goods provided with the shrink hood, thermal energy being emitted and the shrink hood being shrunk.

Beim Schrumpfen wird aber auch Wärmeenergie an die Umgebung abgegeben. Die dadurch erwärmte Umgebungsluft steigt auf, wobei die Aufwärtsströmung bei Einsatz einer Heißgas-Schrumpfeinrichtung noch verstärkt wird. Die aufsteigende warme Luft erreicht auch die oberhalb des Gutstapels befindliche Einrichtung zum Abziehen des Folienschlauches vom Wickel. Dabei besteht die Gefahr, daß die mitgeführte Wärme zu einer vorzeitigen Schrumpfung des nächsten Abschnittes des Folienschlauches führt.When shrinking, however, thermal energy is also released into the environment. The ambient air warmed by it rises, with the upward flow being increased when a hot gas shrinking device is used. The rising warm air also reaches the device for pulling the film tube from the reel located above the stack of goods. There is a risk that the heat carried will lead to premature shrinkage of the next section of the film tube.

Es ist zwar bekannt, die erwärmten Abschnitte des Folienschlauches zu kühlen (WO-A-82 03 833), dazu muß aber ein verhältnismäßig großer Aufwand getrieben werden, wenn sichergestellt werden soll, daß alle Bereiche des Folienschlauches von der Kühlung gleichmäßig erreicht werden.Although it is known to cool the heated sections of the film tube (WO-A-82 03 833), this requires a relatively great effort if it is to be ensured that all areas of the film tube are evenly reached by the cooling.

Aufgabe der Erfindung ist es, bei einer Vorrichtung der eingangs genannten Art ein vorzeitiges Schrumpfen der Schrumpfhaube oder des Folienschlauches mit einfachen mitteln zu vermeiden.The object of the invention is to avoid premature shrinking of the shrink hood or the film tube with simple means in a device of the type mentioned.

Diese Aufgabe wird dadurch gelöst, daß eine dem Gebläse zugeordnete Düsenanordnung zum Erzeugen eines sich im wesentlichen horizontal durch die Vorrichtung erstreckenden, die beim Schrumpfen aufsteigenden Warmgase erfassenden und abführenden Luftvorhanges vorgesehen ist.This object is achieved in that a nozzle arrangement assigned to the blower is provided for producing an air curtain which extends essentially horizontally through the device and which detects and removes warm gases as it rises as warm gases shrink.

Dieser sich horizontal oberhalb des Gutstapels und horizontal durch die Vorrichtung erstreckende Luftvorhang nimmt die aufsteigende Warmluft mit und führt sie ab, so daß sie nicht mehr in den Bereich der Einrichtung zum Abziehen des Folienschlauches gelangen kann.This air curtain, which extends horizontally above the stack of goods and horizontally through the device, takes the rising warm air with it and removes it, so that it can no longer reach the area of the device for pulling off the film tube.

Zweckmäßig wird die Düsenanordnung im Bereich einer Seite der Vorrichtung angeordnet und wird auf der gegenüberliegenden Seite eine Fanghaube mit einem Abzugskanal vorgesehen. Die Fanghaube und der Abzugskanal verhindern, daß die Luftströmung des Luftvorhanges und die davon mitgerissene Warmluft sich unkontrolliert im Raum bewegen. Ggf. kann an den Abzugskanal auch ein Sauggebläse angeschlossen sein.The nozzle arrangement is expediently in the region of a Arranged side of the device and is provided on the opposite side a hood with a drainage channel. The collecting hood and the exhaust duct prevent the air flow of the air curtain and the warm air entrained by it from moving uncontrollably in the room. Possibly. a suction fan can also be connected to the exhaust duct.

Die Düsenanordnung und das ihr zugeordnete Gebläse werden zweckmäßig an einem Gestell befestigt, an dem auch die schrumpfeinrichtung geführt ist. Das ermöglicht einen kompakten Aufbau der Vorrichtung sowie, außerdem auch die Nachrüstung von Vorrichtungen, bei denen bisher eine Düsenanordnung mit Gebläse fehlt.The nozzle arrangement and the blower assigned to it are expediently attached to a frame on which the shrinking device is also guided. This enables a compact construction of the device as well as retrofitting of devices in which a nozzle arrangement with a blower was previously missing.

Im einfachsten Fall kann die Düsenanordnung ein geschlitztes Rohr sein, dessen auf die Fanghaube gerichteter Auslaßschlitz eine Länge aufweist, die wenigstens der zugeordneten Abmessung der Schrumpfeinrichtung entspricht. Selbstverständlich sind auch andere Ausführungen von Düsenanordnungen möglich, wenn nur gewährleistet ist, daß der damit erzeugte Luftvorhang sich durchgehend über die Breite der Schrumpfeinrichtung erstreckt.In the simplest case, the nozzle arrangement can be a slotted tube, the outlet slot of which is directed towards the collecting hood and has a length which corresponds at least to the assigned dimension of the shrinking device. Of course, other designs of nozzle arrangements are also possible if it is only ensured that the air curtain thus produced extends continuously across the width of the shrinking device.

Im folgenden wird ein in der Zeichnung dargestelltes Ausführungsbeispiel der Erfindung erläutert; die einzige Figur zeigt schematisch eine Seitenansicht einer Vorrichtung zum Überziehen und Einschrumpfen von Gutstapeln mit Schrumpfhauben.In the following an embodiment of the invention shown in the drawing is explained; the single figure shows schematically a side view of a device for covering and shrinking stacks of goods with shrink hoods.

Die dargestellte Vorrichtung befindet sich im Bereich eines Förderers 1 auf dem palettierte Gutstapel 2 bewegt werden, die mit einer Schrumpfhaube überzogen werden sollen, welche dann eingeschrumpft wird.The device shown is located in the area of a conveyor 1 on which palletized stacks of goods 2 are moved, which are to be covered with a shrink hood, which is then shrunk on.

Zur Vorrichtung gehört ein portalähnliches Gestell 3 mit Rahmenstielen 4,5 und einer oberen Rahmentraverse 6.The device includes a portal-like frame 3 with frame posts 4, 5 and an upper frame cross member 6.

An der oberen Rahmentraverse 6 ist eine Einrichtung 7 zum Abziehen des Folienschlauches 8 von einem Wickel 9 angeordnet. Wie in der Zeichnung angedeutet, wird der Folienschlauch 8 über mehrere Umlenkrollen 10 zu einer nur angedeuteten Spreizeinrichtung 11 geführt. Zur Spreizeinrichtung gehört auch eine nicht dargestellte Trennschweißeinrichtung, die vom Folienschlauch 8 einen Abschnitt abtrennt und diesen mit einer Kopfschweißnaht versieht. Der vom Folienschlauch 8 abgetrennte Abschnitt bildet eine Schrumpfhaube, die dann von oben über den Gutstapel 2 gezogen wird.A device 7 for pulling off the film tube 8 from a winding 9 is arranged on the upper frame cross member 6. As indicated in the drawing, the film tube 8 is guided via a plurality of deflection rollers 10 to a spreading device 11, which is only indicated. The spreading device also includes a separating welding device, not shown, which separates a section from the film tube 8 and provides this with a head weld. The section separated from the film tube 8 forms a shrink hood, which is then pulled over the stack of goods 2 from above.

An einer neben dem Gestell 3 angeordneten Säule 12 oder dergleichen ist ein vertikal auf- und abbeweglicher Wagen 13 geführt, der eine Schrumpfeinrichtung 14 trägt. Die Schrumpfeinrichtung hat die Form eines Rahmens, dessen innere Öffnung größer ist als die Grundfläche des Gutstapels 2, so daß die Schrumpfeinrichtung 14 in vertikaler Richtung, den Gutstapel allseitig umgebend auf- und abbewegt werden kann. Die Schrumpfeinrichtung kann mit Infrarotstrahlen oder mit Heißgas arbeiten.A vertically up and down movable carriage 13 is guided on a column 12 or the like arranged next to the frame 3 and carries a shrinking device 14. The shrinking device has the shape of a frame, the inner opening of which is larger than the base area of the stack of goods 2, so that the shrinking device 14 can be moved up and down in the vertical direction, surrounding the stack of goods. The shrinking device can work with infrared rays or with hot gas.

Auf einer Konsole 15 der Säule 12 ist ein Gebläse 16 angeordnet, welches mit einem geschlitzten Rohr 17 verbunden ist, das sich unterhalb der oberen Rahmentraverse 6 jedoch oberhalb der obersten Betriebsstellung der Schrumpfeinrichtung 14 befindet und in horizontaler Richtung erstreckt. Das Rohr 17 ist bei der dargestellten Ausführung am Rahmenstiel 5 befestigt. Die Länge des Rohres entspricht wenigstens der entsprechenden Abmessung der Schrumpfeinrichtung 14.A blower 16 is arranged on a bracket 15 of the column 12 and is connected to a slotted tube 17, which is located below the upper frame cross member 6 but above the uppermost operating position of the shrinking device 14 and extends in the horizontal direction. The tube 17 is attached to the frame stem 5 in the embodiment shown. The length of the tube corresponds at least to the corresponding dimension the shrinking device 14.

Auf der dem Rohr 17 gegenüberliegenden Seite der Vorrichtung ist am Rahmenstiel 4 eine Fanghaube 18 angeordnet, von der ein Abzugskanal 19 ausgeht. Die Fanghaube 18, die bei der dargestellten Ausführung einlaßseitig ein Gitterrost 20 aufweist, erstreckt sich im wesentlichen parallel zum Rohr 17 und besitzt eine entsprechende Länge. Der Auslaßschlitz 21 des Rohrs 17 erstreckt sich im wesentlichen über die gesamte Länge des Rohrs 17 und ist auf die Fanghaube 18 gerichtet.On the side of the device opposite the pipe 17, a catch hood 18 is arranged on the frame stem 4, from which a discharge duct 19 extends. The catch hood 18, which in the embodiment shown has a grating 20 on the inlet side, extends essentially parallel to the tube 17 and has a corresponding length. The outlet slot 21 of the tube 17 extends substantially over the entire length of the tube 17 and is directed towards the hood 18.

Die beim Betrieb der Vorrichtung, insbesondere beim Schrumpfen aufsteigenden Warmgase, die in der Zeichnung durch Pfeile angedeutet sind, werden von einem aus dem Auslaßschlitz 21 austretenden Luftvorhang 22 erfaßt und zur Fanghaube 18 geleitet, von der sie über faßt und zur Fanghaube 18 geleitet, von der sie über den Abzugskanal 19 abgeführt werden. Die Warmgase können dementsprechend nicht mehr bis in den Bereich der oberen Rahmentraverse 6 und der dort angeordneten Einrichtungen gelangen.The rising during the operation of the device, in particular when shrinking hot gases, which are indicated in the drawing by arrows, are detected by an air curtain 22 emerging from the outlet slot 21 and passed to the hood 18, from which it grips and passed to the hood 18, by of which they are discharged through the exhaust duct 19. Accordingly, the hot gases can no longer reach the area of the upper frame cross member 6 and the devices arranged there.

Claims (4)

  1. Device for covering and shrinking stacks of goods (2) with shrinkable hoods, comprising an emplacement or a conveyor (1) for carrying the stack of goods (2) and a mechanism (7), which is disposed thereabove, for drawing-off a tubular film (8) from a roll (9), wherein a portion, which is separated from the tubular film (8) and is provided with an end-lap weld seam, is drawn from above over the stack of goods (2) as a shrinkable hood and is acted upon with thermal energy in all directions with a frame-like, vertically displaceable shrinkage means (14), but wherein also an air current is produced with a fan (16) beneath the mechanism (7) for the drawing-off process above the range of movement of the shrinkage means (14), characterised in that a nozzle arrangement (21), which is associated with the fan (16), is provided in order to produce an air curtain (22), which extends substantially horizontally through the device and picks-up and conducts away the hot gases which rise during shrinkage.
  2. Device according to claim 1, characterised in that the nozzle arrangement (21) is disposed in the region of one side of the device, and in that a collecting hood (18) is provided with a discharge conduit (19) on the opposite side.
  3. Device according to claim 1 or 2, characterised in that the nozzle arrangement (21) and the fan (16) associated therewith are mounted on the frame (3), on which the shrinkage means (14) is also guided.
  4. Device according to one of claims 1 to 3, characterised in that the nozzle arrangement is a slotted tube (17, 21), the outlet slot (21) of which is directed towards the collecting hood (18) and has a length which corresponds to at least the associated dimension of the shrinkage means (14).
EP86104862A 1985-05-10 1986-04-09 Device for covering and shrinking piles of goods with shrinkable hoods Expired - Lifetime EP0200941B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86104862T ATE66656T1 (en) 1985-05-10 1986-04-09 DEVICE FOR COVERING AND SHRINKING STACKS OF GOODS WITH SHRINK HOODS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8513892U 1985-05-10
DE8513892U DE8513892U1 (en) 1985-05-10 1985-05-10 Device for covering and shrinking stacks of goods with shrink hoods

Publications (2)

Publication Number Publication Date
EP0200941A1 EP0200941A1 (en) 1986-11-12
EP0200941B1 true EP0200941B1 (en) 1991-08-28

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ID=6780961

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86104862A Expired - Lifetime EP0200941B1 (en) 1985-05-10 1986-04-09 Device for covering and shrinking piles of goods with shrinkable hoods

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US (1) US4651508A (en)
EP (1) EP0200941B1 (en)
JP (1) JPH0662152B2 (en)
AT (1) ATE66656T1 (en)
DE (2) DE8513892U1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3714811C2 (en) * 1987-05-04 1999-04-29 Kurt Lachenmeier A S Kl Indust Device for covering and shrinking a plastic film onto goods to be packaged
ES2222546T3 (en) * 1998-11-05 2005-02-01 Kurt Lachenmeier A/S PROCEDURE AND DEVICE FOR THE SETTING AND CONTRACTION OF A PACKING CAPERUZA ON AN OBJECT.
EP1000864B1 (en) * 1998-11-05 2003-04-16 Kurt Lachenmeier A/S Method and device for shrinking a foil on an object
CA2359021C (en) * 1999-01-28 2008-07-29 Msk-Verpackungs-Systeme Gesellschaft Mit Beschrankter Haftung Device for shrinking a shrink-wrap film
EP1059233A1 (en) * 1999-04-16 2000-12-13 Kl- Lachenmeier A/S Method and device for packaging objects in a film-hood
FR2792610B1 (en) * 1999-04-26 2001-07-13 Thimon PROCESS FOR SHRINKAGE OF A FLEXIBLE SHEATH IN THERMALLY SHRINKABLE PLASTIC MATERIAL ON A PALLETIZED LOAD, AND MACHINE FOR CARRYING OUT SAID METHOD
DE202005020192U1 (en) * 2005-10-24 2006-05-24 MSK-Verpackungs-Systeme Gesellschaft mit beschränkter Haftung Device for shrinking a heat-shrinkable film placed around a, in particular palletized, stack of goods
DE202010001587U1 (en) * 2010-01-29 2010-04-22 Msk - Verpackungs-Systeme Gmbh Device for wrapping a stack of goods with a film
EP2740673B1 (en) * 2012-12-06 2015-07-08 MSK - Verpackungs-Systeme GmbH Method and device for applying a film to a stack of goods

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3303795A1 (en) * 1983-02-04 1984-08-16 JK-Josef Kratz GmbH, 5461 Windhagen Body irradiator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3930790A (en) * 1971-04-08 1976-01-06 Ethyl Corporation Method and apparatus for shrinking plastic film over grouped articles
DE3117531A1 (en) * 1981-05-04 1982-11-18 Kurt Lachenmeier ApS, 6400 Soenderborg METHOD AND APPARATUS FOR PACKAGING STACKS AND THE LIKE WITH A HOT SHRINK FILM
DE3208544A1 (en) * 1982-03-10 1983-09-15 INDAG Gesellschaft für Industriebedarf mbH, 6900 Heidelberg METHOD AND DEVICE FOR APPLYING SHRINK FILMS ON PALLETED GOETER STACKS

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3303795A1 (en) * 1983-02-04 1984-08-16 JK-Josef Kratz GmbH, 5461 Windhagen Body irradiator

Also Published As

Publication number Publication date
US4651508A (en) 1987-03-24
EP0200941A1 (en) 1986-11-12
ATE66656T1 (en) 1991-09-15
DE3681060D1 (en) 1991-10-02
DE8513892U1 (en) 1985-09-05
JPS61259926A (en) 1986-11-18
JPH0662152B2 (en) 1994-08-17

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