EP0403906B1 - Device for shrinking a shrinkable hood drawn over a stack of goods - Google Patents

Device for shrinking a shrinkable hood drawn over a stack of goods Download PDF

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Publication number
EP0403906B1
EP0403906B1 EP90110964A EP90110964A EP0403906B1 EP 0403906 B1 EP0403906 B1 EP 0403906B1 EP 90110964 A EP90110964 A EP 90110964A EP 90110964 A EP90110964 A EP 90110964A EP 0403906 B1 EP0403906 B1 EP 0403906B1
Authority
EP
European Patent Office
Prior art keywords
shrinking
conveyor
goods
stack
frame
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
EP90110964A
Other languages
German (de)
French (fr)
Other versions
EP0403906A1 (en
Inventor
Reiner Wilhelm Hannen
Norbert Peter Vermeulen
Hans-Theo Pieters
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
Original Assignee
MSK Verpackungs Systeme 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 MSK Verpackungs Systeme GmbH filed Critical MSK Verpackungs Systeme GmbH
Publication of EP0403906A1 publication Critical patent/EP0403906A1/en
Application granted granted Critical
Publication of EP0403906B1 publication Critical patent/EP0403906B1/en
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
    • 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

  • the invention relates to a device for shrinking a shrink hood pulled over a stack of goods, with a conveyor for the stack of goods and a shrinking frame that can be moved up and down, the shrinking frame being moved upwards in particular from a lower rest position for preheating the shrinking hood and the shrinking hood then during a downward movement of the shrinking frame is shrunk, the conveyor being interrupted and receptacles for corresponding sections of the shrinking frame, which is in the rest position below the conveying plane, are formed between adjacent conveyor sections.
  • a generic device (DE-A-2 146 446) is used to shrink shrink hoods that are pulled over palletized stacks of goods.
  • the shrink hood is pulled over the stack of goods with the aid of a hood covering device arranged above the conveyor and above the shrink frame.
  • the shrink hood can also have been pulled over the stack of goods at another point.
  • the palletized stack of goods is moved on the conveyor into the area of the shrink frame, which is in its lower rest position in the receptacles between the adjacent conveyor sections.
  • the shrink frame is moved up and then down again. Problems can arise when the palletized stack of goods moves over the receptacles between the adjacent conveyor sections, in particular if the conveyor sections are far apart or the receptacles are very wide.
  • the object of the invention is to support the pallet in widely spaced conveyor sections so that it does not fall into the receptacles and blocks the device.
  • rollers are arranged on the upper side of the sections of the shrink frame which are located in the rest position in the receptacles, the upper side of which are in alignment with the conveying plane in the rest position of the shrink frame and that counter bearings are provided for supporting the shrink frame.
  • the shrink frame can also be used to support the palletized stack of goods on the way into the area of the shrink frame, if not only rollers on the top of the shrink frame but also stabilizing counter bearings are provided.
  • the successive conveyor sections can have a common drive, but they can also be provided with separate drives.
  • the drawing shows two adjacent conveyor sections 1, 2 for the transport of a pallet 3 loaded with a stack of goods, not shown.
  • the pallet 3 with the stack of goods is transported in the direction of arrow 4 until it has arrived on the conveyor section 1.
  • the conveyor section 1 is on the right side in the figure another conveyor section connected upstream, which ends at a distance in front of the conveyor section 1, just as the conveyor section 1 ends at a distance in front of the conveyor section 2.
  • a shrink frame 5 In the area of the conveyor section 1 there is a shrink frame 5, of which only a cross member 5a and a longitudinal member 5b are visible in the figure.
  • the shrinking frame 5 can be moved up and down in the direction of the arrow 6.
  • the distances between the conveyor section 1 preceding the conveyor section and the conveyor section 1 and between the conveyor section 1 and the conveyor section 2 form receptacles 7 for the cross bars 5a of the shrink frame 5, so that the shrink frame 5 is completely below the conveying plane in the lower rest position shown.
  • rollers 8 At the top of the cross bars 5a of the shrink frame 5 there are rollers 8, the top of which is in alignment with the conveying plane in the rest position.
  • the shrink frame is supported on a counter bearing 9 in order to withstand the loads that occur when the pallet 3 is moved in and out.
  • the device shown works as follows: With the shrink frame 5 in the lower rest position, a pallet 3 is moved from a preceding conveyor section onto the conveyor section 1. A shrink hood, not shown, is pulled over the stack of goods on the pallet with the aid of a hood pulling device, also not shown, which stands, for example, next to the conveyor section 1. Then the shrink frame 5 is driven with the burners lit and at a relatively high speed, the shrink hood shrinking somewhat. The shrink frame is then moved down again at a slow speed so that the shrink hood shrinks completely. When the shrinking frame 5 has reached the rest position shown and rests on the counter bearings 9, the pallet 3 can be transferred to the conveyor 2 in the direction of the arrow 4, during the overflow via the receptacle 7 of the rollers 8 is supported. At the same time, a new pallet with a stack of goods can be brought onto the conveyor section 1.

Abstract

The invention relates to a device for shrinking a shrinkable hood drawn over a stack of goods, with a conveyor for the stack of goods and a shrinking frame that can be moved up and down, it being possible for the shrinking frame to be moved upwards in particular from a lower position of rest in order to pre-warm the shrinkable hood, and the shrinkable hood then to be shrunk during a downward movement of the shrinking frame. In order to avoid idle strokes of the shrinking frame and to increase the efficiency of the device, the conveyor is to be interrupted and recesses (7) for corresponding sections of the shrinking frame are to be formed between adjacent conveyor sections (1, 2), the shrinking frame being below the conveying level in the position of rest. <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zum Schrumpfen einer über einen Gutstapel gezogenen Schrumpfhaube mit einem Förderer für den Gutstapel und einem auf- und abbeweglichen Schrumpfrahmen, wobei der Schrumpfrahmen insbesondere aus einer unteren Ruhestellung zur Vorwärmung der Schrumpfhaube nach oben bewegt wird und die Schrumpfhaube dann bei einer Abwärtsbewegung des Schrumpfrahmens geschrumpft wird, wobei der Förderer unterbrochen ist und zwischen benachbarten Fördererabschnitten Aufnahmen für entsprechende Abschnitte des Schrumpfrahmens gebildet sind, der sich in Ruhestellung unterhalb der Förderebene befindet.The invention relates to a device for shrinking a shrink hood pulled over a stack of goods, with a conveyor for the stack of goods and a shrinking frame that can be moved up and down, the shrinking frame being moved upwards in particular from a lower rest position for preheating the shrinking hood and the shrinking hood then during a downward movement of the shrinking frame is shrunk, the conveyor being interrupted and receptacles for corresponding sections of the shrinking frame, which is in the rest position below the conveying plane, are formed between adjacent conveyor sections.

Eine gattungsgemäße Vorrichtung (DE-A-2 146 446) dient zum Schrumpfen von Schrumpfhauben, die über palettierte Gutstapel gezogen sind. Die Schrumpfhaube wird mit Hilfe einer oberhalb des Förderers und oberhalb des Schrumpfrahmens angeordneten Haubenüberzieheinrichtung über den Gutstapel gezogen. Die Schrumpfhaube kann aber auch an einer anderen Stelle über den Gutstapel gezogen worden sein. Jedenfalls wird der palettierte Gutstapel auf dem Förderer bis in den Bereich des Schrumpfrahmens bewegt, der sich in seiner unteren Ruhestellung in den Aufnahmen zwischen den benachbarten Fördererabschnitten befindet. Zum Schrumpfen wird der Schrumpfrahmen aufwärts und anschließend wieder abwärts bewegt. Bei der Bewegung des palettierten Gutstapels über die Aufnahmen zwischen den benachbarten Fördererabschnitten können Probleme entstehen, insbesondere wenn die Fördererabschnitte weit auseinanderliegen bzw. die Aufnahmen sehr breit sind.A generic device (DE-A-2 146 446) is used to shrink shrink hoods that are pulled over palletized stacks of goods. The shrink hood is pulled over the stack of goods with the aid of a hood covering device arranged above the conveyor and above the shrink frame. However, the shrink hood can also have been pulled over the stack of goods at another point. In any case, the palletized stack of goods is moved on the conveyor into the area of the shrink frame, which is in its lower rest position in the receptacles between the adjacent conveyor sections. To shrink, the shrink frame is moved up and then down again. Problems can arise when the palletized stack of goods moves over the receptacles between the adjacent conveyor sections, in particular if the conveyor sections are far apart or the receptacles are very wide.

Aufgabe der Erfindung ist es, bei weit auseinanderliegenden Fördererabschnitten die Palette so zu stützen, daß sie nicht in die Aufnahmen hineinfällt und die Vorrichtung blockiert.The object of the invention is to support the pallet in widely spaced conveyor sections so that it does not fall into the receptacles and blocks the device.

Diese Aufgabe wird dadurch gelöst, daß auf der Oberseite der in Ruhestellung in den Aufnahmen befindlichen Abschnitte des Schrumpfrahmens Rollen angeordnet sind, deren Oberseite in der Ruhestellung des Schrumpfrahmens mit der Förderebene fluchten, und daß zur Abstützung des Schrumpfrahmens Gegenlager vorgesehen sind. Überraschenderweise hat sich gezeigt, daß der Schrumpfrahmen auch zur Abstützung des palettierten Gutstapels auf dem Wege in den Bereich des Schrumpfrahmens eingesetzt werden kann, wenn nicht nur Rollen auf der Oberseite des Schrumpfrahmens, sondern auch den Schrumpfrahmen stabilisierende Gegenlager vorgesehen sind.This object is achieved in that rollers are arranged on the upper side of the sections of the shrink frame which are located in the rest position in the receptacles, the upper side of which are in alignment with the conveying plane in the rest position of the shrink frame and that counter bearings are provided for supporting the shrink frame. Surprisingly, it has been shown that the shrink frame can also be used to support the palletized stack of goods on the way into the area of the shrink frame, if not only rollers on the top of the shrink frame but also stabilizing counter bearings are provided.

Die aufeinanderfolgenden Fördererabschnitte können einen gemeinsamen Antrieb aufweisen, sie können aber auch mit gesonderten Antrieben versehen sein.The successive conveyor sections can have a common drive, but they can also be provided with separate drives.

Im folgenden wird ein in der Zeichnung dargestelltes Ausführungsbeispiel der Erfindung erläutert; die einzige Figur zeigt teilweise einen Längsschnitt durch eine Vorrichtung zum Schrumpfen einer über einen Gutstapel gezogenen Schrumpfhaube.In the following an embodiment of the invention shown in the drawing is explained; the single figure partially shows a longitudinal section through a device for shrinking a shrink hood pulled over a stack of goods.

In der Zeichnung erkennt man zwei benachbarte Fördererabschnitte 1, 2 für den Transport einer mit einem nicht dargestellten Gutstapel beladenen Palette 3. Die Palette 3 mit dem Gutstapel wird in Richtung des Pfeils 4 transportiert, bis sie auf dem Fördererabschnitt 1 angekommen ist. Dem Fördererabschnitt 1 ist auf der in der Figur rechten Seite ein weiterer Fördererabschnitt vorgeschaltet, der vor dem Fördererabschnitt 1 mit Abstand endet, ebenso wie der Fördererabschnitt 1 vor dem Fördererabschnitt 2 mit Abstand endet.The drawing shows two adjacent conveyor sections 1, 2 for the transport of a pallet 3 loaded with a stack of goods, not shown. The pallet 3 with the stack of goods is transported in the direction of arrow 4 until it has arrived on the conveyor section 1. The conveyor section 1 is on the right side in the figure another conveyor section connected upstream, which ends at a distance in front of the conveyor section 1, just as the conveyor section 1 ends at a distance in front of the conveyor section 2.

Im Bereich des Fördererabschnittes 1 befindet sich ein Schrumpfrahmen 5, von dem in der Figur lediglich ein Querholm 5a sowie ein Längsholm 5b sichtbar ist. Der Schrumpfrahmen 5 ist in Richtung des Pfeils 6 auf- und abbewegbar. Die Abstände zwischen dem dem Fördererabschnitt 1 vorangehenden Fördererabschnitt und dem Fördererabschnitt 1 sowie zwischen dem Fördererabschnitt 1 und dem Fördererabschnitt 2 bilden Aufnahmen 7 für die Querholme 5a des Schrumpfrahmens 5, so daß der Schrumpfrahmen 5 in der dargestellten unteren Ruhestellung sich vollständig unterhalb der Förderebene befindet. An der Oberseite der Querholme 5a des Schrumpfrahmens 5 befinden sich Rollen 8, deren Oberseite in der Ruhestellung mit der Förderebene fluchtet. Dabei wird der Schrumpfrahmen auf einem Gegenlager 9 abgestützt, um den beim Ein- und Ausfahren der Palette 3 auftretenden Belastungen standzuhalten.In the area of the conveyor section 1 there is a shrink frame 5, of which only a cross member 5a and a longitudinal member 5b are visible in the figure. The shrinking frame 5 can be moved up and down in the direction of the arrow 6. The distances between the conveyor section 1 preceding the conveyor section and the conveyor section 1 and between the conveyor section 1 and the conveyor section 2 form receptacles 7 for the cross bars 5a of the shrink frame 5, so that the shrink frame 5 is completely below the conveying plane in the lower rest position shown. At the top of the cross bars 5a of the shrink frame 5 there are rollers 8, the top of which is in alignment with the conveying plane in the rest position. The shrink frame is supported on a counter bearing 9 in order to withstand the loads that occur when the pallet 3 is moved in and out.

Die dargestellte Vorrichtung arbeitet wie folgt: Bei in der unteren Ruhestellung befindlichem Schrumpfrahmen 5 wird eine Palette 3 von einem vorangehenden Fördererabschnitt auf den Fördererabschnitt 1 gefahren. Über den Gutstapel der Palette wird eine nicht dargestellte Schrumpfhaube gezogen mit Hilfe einer ebenfalls nicht dargestellten Haubenüberzieheinrichtung, die beispielsweise neben dem Fördererabschnitt 1 steht. Dann wird der Schrumpfrahmen 5 mit gezündeten Brennern und verhältnismäßig großer Geschwindigkeit nach oben gefahren, wobei die Schrumpfhaube etwas schrumpft. Anschließend wird der Schrumpfrahmen mit langsamer Geschwindigkeit wieder nach unten gefahren, damit die Schrumpfhaube vollständig schrumpft. Wenn der Schrumpfrahmen 5 die dargestellte Ruhestellung erreicht hat und auf den Gegenlagern 9 aufliegt, kann die Palette 3 in Richtung des Pfeils 4 dem Förderer 2 übergeben werden, wobei sie während des Überlaufs über die Aufnahme 7 von den Rollen 8 gestützt wird. Gleichzeitig kann eine neue Palette mit einem Gutstapel auf den Fördererabschnitt 1 gebracht werden.The device shown works as follows: With the shrink frame 5 in the lower rest position, a pallet 3 is moved from a preceding conveyor section onto the conveyor section 1. A shrink hood, not shown, is pulled over the stack of goods on the pallet with the aid of a hood pulling device, also not shown, which stands, for example, next to the conveyor section 1. Then the shrink frame 5 is driven with the burners lit and at a relatively high speed, the shrink hood shrinking somewhat. The shrink frame is then moved down again at a slow speed so that the shrink hood shrinks completely. When the shrinking frame 5 has reached the rest position shown and rests on the counter bearings 9, the pallet 3 can be transferred to the conveyor 2 in the direction of the arrow 4, during the overflow via the receptacle 7 of the rollers 8 is supported. At the same time, a new pallet with a stack of goods can be brought onto the conveyor section 1.

Claims (3)

  1. Device for shrinking a shrinkable hood drawn over a stack of goods, comprising a conveyor (1, 2) for the stack of goods and a shrinking frame (5), which is upwardly and downwardly displaceable, the shrinking frame (5) being, more especially, displaced upwardly from a lower position of rest for the preheating of the shrinkable hood, and the shrinkable hood is then shrunk during a downward movement of the shrinking frame, the conveyor (1, 2) being discontinuous, and receiving means (7) being formed between adjacent conveyor portions (1, 2) for receiving corresponding portions of the shrinking frame (5), which is situated beneath the conveyor plane in its position of rest, characterised in that rollers (8) are disposed on the upper surface of the portions of the shrinking frame (5) situated in the receiving means (7) in the position of rest, the upper surface of said rollers being in alignment with the conveyor plane in the position of rest, and in that abutments (9) are provided for supporting the shrinking frame (5).
  2. Device according to claim 1, characterised in that the conveyor portions (1, 2) have a common drive means.
  3. Device according to claim 1, characterised in that the conveyor portions (1, 2) have separate drive means.
EP90110964A 1989-06-22 1990-06-09 Device for shrinking a shrinkable hood drawn over a stack of goods Expired - Lifetime EP0403906B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8907610U 1989-06-22
DE8907610U DE8907610U1 (en) 1989-06-22 1989-06-22

Publications (2)

Publication Number Publication Date
EP0403906A1 EP0403906A1 (en) 1990-12-27
EP0403906B1 true EP0403906B1 (en) 1992-12-16

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EP90110964A Expired - Lifetime EP0403906B1 (en) 1989-06-22 1990-06-09 Device for shrinking a shrinkable hood drawn over a stack of goods

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US (1) US5018339A (en)
EP (1) EP0403906B1 (en)
AT (1) ATE83453T1 (en)
DE (2) DE8907610U1 (en)
DK (1) DK0403906T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4336387C1 (en) * 1993-10-26 1994-10-20 Moellers Maschf Gmbh Process and apparatus for the shrinkage of a shrink-foil cover
DE4423513C1 (en) * 1993-10-26 1996-02-01 Moellers Maschf Gmbh Device for shrinking a shrink film hood
US20120240525A1 (en) * 2011-03-25 2012-09-27 Summerford Wayne C Method and System for Applying Tamper Evident Banding

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3662512A (en) * 1968-01-24 1972-05-16 Weldotron Corp Method and apparatus for shrink-film wrapping a pallet load
SE335498B (en) * 1968-02-07 1971-05-24 E Gustavsson
AU3352271A (en) * 1970-09-16 1973-04-19 Nippon Industry Machine Co Ltd Packing articles
US3710550A (en) * 1970-12-03 1973-01-16 K Osborne Apparatus for shrinking plastic film over palletized loads
US3930790A (en) * 1971-04-08 1976-01-06 Ethyl Corporation Method and apparatus for shrinking plastic film over grouped articles
US3830036A (en) * 1973-02-20 1974-08-20 Harkess K D B A Ideanamics Grocery packaging machine
FR2417434A1 (en) * 1978-02-18 1979-09-14 Moellers Maschf DEVICE FOR INTRODUCING PARTS OF A CONTRACTABLE PACKAGING SHEET INTO RECESSED ZONES PROVIDED ON THE SIDES OF A STACK OF OBJECTS
DK145987C (en) * 1978-12-13 1983-10-10 Lip Bygningsartikler PLANT FOR SHRINKLE OF A SHRIMP WRAP ABOUT A NUMBER OF STUFFED PRODUCTS
DE3327996A1 (en) * 1983-08-03 1985-02-14 MSK - Verpackungs-Systeme GmbH, 4190 Kleve METHOD FOR PACKING PALLETIZED GOODS STACKS AND DEVICE FOR CARRYING OUT THIS METHOD
US4538363A (en) * 1984-02-01 1985-09-03 Zagoroff Dimiter S Shrink oven
DE8708145U1 (en) * 1987-06-06 1987-08-06 Msk-Verpackungs-Systeme Gmbh, 4190 Kleve, De

Also Published As

Publication number Publication date
DE8907610U1 (en) 1989-08-17
DK0403906T3 (en) 1993-02-01
DE59000597D1 (en) 1993-01-28
EP0403906A1 (en) 1990-12-27
US5018339A (en) 1991-05-28
ATE83453T1 (en) 1993-01-15

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