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EP0250697B1 - Apparatus for producing a pallet-less packaging unit entirely wrapped with shrink foil - Google Patents

Apparatus for producing a pallet-less packaging unit entirely wrapped with shrink foil Download PDF

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Publication number
EP0250697B1
EP0250697B1 EP87100308A EP87100308A EP0250697B1 EP 0250697 B1 EP0250697 B1 EP 0250697B1 EP 87100308 A EP87100308 A EP 87100308A EP 87100308 A EP87100308 A EP 87100308A EP 0250697 B1 EP0250697 B1 EP 0250697B1
Authority
EP
European Patent Office
Prior art keywords
stack
shrink
turning
conveyor
recesses
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
Application number
EP87100308A
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German (de)
French (fr)
Other versions
EP0250697A1 (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
Application filed by Maschinenfabrik Moellers GmbH filed Critical Maschinenfabrik Moellers GmbH
Priority to AT87100308T priority Critical patent/ATE42520T1/en
Publication of EP0250697A1 publication Critical patent/EP0250697A1/en
Application granted granted Critical
Publication of EP0250697B1 publication Critical patent/EP0250697B1/en
Expired 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
    • 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

Definitions

  • the invention relates to a device for carrying out a method for producing a packaging unit completely wrapped with shrink film and containing a plurality of layers of objects stacked on top of one another, first of all several layers of objects with the same base area are stacked on top of one another, and then a special layer of objects is stacked in such a way that at least two mutually parallel niches are formed for the later attack of the supporting elements of a lifting device, a first shrink film is applied to the entire stack, which is subsequently shrunk tightly to the stack by application of heat, whereupon the entire stack is rotated by 180 ° in such a way that the Special layer with the niches comes down, whereupon a second shrink film is applied to the stack and subsequently shrunk tightly to the stack by application of heat, before turning the stack and after shrinking the tw Since the shrink film is formed in the niches, the shrink film is provided with a shrink film applicator, a shrink device, a turning device having two conveying surfaces that can be moved against the stack from opposite sides, and
  • the molding tools in the turning device are formed by a two-part, relatively complicated molding frame, which is fed to one of the two conveying surfaces of the turning device before the insertion of a stack with the first shrink film applied to it after retracting the stack with the first shrink film when moving the two conveying surfaces of the turning device from above into the niches of the special layer of the stack and after turning the stack, the turning device leaves with the stack turned and with the stack by a second shrink film applicator and a secondshrinking device is transported to then be separated from the stack and returned to the turning device.
  • this known device is very inexpensive for forming very stable and stable stacks, the device is very expensive and takes up space.
  • two profiling devices must also be provided, namely one in front of the shrinking device for profiling the niches when they are on top and one after the shrinking device for profiling the niches when they are turned after the stack has been turned down are.
  • the object of the invention is to provide a solution which further reduces the required space and equipment, especially in systems with a lower power requirement similar to the device according to DE-PS-27 60 249 and at the same time as stable and stable stack similar to the device forms according to DE-PS-27 43 568.
  • this object is achieved according to the invention in that the only shrink film application device and the only shrinking device are designed as a combination device with a common conveying and standing path and in that the shaping tools of the profiling device are permanently assigned to the relevant conveying surface of the downstream turning device and by means of drive means arranged on the turning device after the application and shrinking of the first shrink film in the form position in the niches, after turning the stack in the release position and after returning the stack to the combined shrink film application and shrinking device and there covering and shrinking of the second shrink film and re-feeding thereon can be moved to the turning device for re-profiling the niches again in the shape position and subsequently for the lateral removal of the stack again in the release position.
  • the overall outlay in terms of apparatus is less, because in the combined shrink film application and shrinking device a frame for previously two machines and in the combined turning and profiling device one frame for previously three machines and a corresponding one each can be used The number of conveying areas for the individual machines and the conveying sections connecting them to one another is eliminated.
  • a particularly advantageous embodiment results if, as molding tools before the start and after the end of the conveying surface of the turning device in question, between this and the respective upstream or downstream conveyor, one can be inserted into the niches up to the stop on their horizontal walls Conveyor element is provided, with the respective conveyor surface with the conveyor elements on both sides having a length which corresponds approximately to the length of the opposite conveyor surface, in some cases similar to that which is already known for a device for profiling the niches located below a stack (DE-PS 28 39 089).
  • Each conveyor element can be designed as a set of rollers, as is particularly favorable for moving the stack in and out with niches located at the bottom into and out of the turning device.
  • each conveyor element can also be designed as a conveyor belt or multiple belt drive.
  • the training can be made such that the movements of the conveying elements can be adapted to the niches of differently sized packaging units or stacks.
  • the conveyor of the combined shrink film applicator and shrink device can be raised before the start of shrinking and can be lowered again after shrinking on the shrink film in the lowest region of the stack, so that in the case of a combined shrink film applicator and shrink device above the elements applying the shrink film on a common lift - and lowerable frame arranged shrinking torch or the like can easily reach the lowest area of the stack.
  • the overall system shown in Fig. 1 has a palletizer 1 of conventional design, a combined shrink film application and shrinking device 2, also of a basically known type, and a fundamentally redesigned turning device 3, as well as a downstream acceptance conveyor 4 and intermediate conveyor 5 between palletizer 1 and a combined one Shrink film application and shrinking device 2 and the latter and the turning device 3.
  • the combination device 2 is equipped with a conveyor and standing track 7, which can be raised and lowered by means of scissors lifting mechanism 6, and with a frame 8, which can preferably be raised and lowered by means of chains, not shown, on which an all-round shrinking torch 9 or the like is arranged, as well as below Elements 10 in the form of spreading fingers for applying shrink film hoods to a stack located on the conveying and standing path and not shown in FIG. 1 for the sake of clarity (labeled S in FIG. 2).
  • the turning device 3 is provided with two conveying surfaces 11 and 12 which are movable in opposite directions and which, as a whole, can be rotated about an axis 13 with their guides and drive means which enable the movement towards one another, all as previously known.
  • a new feature of the turning device 3 is that one of the two conveying surfaces, namely the upper conveying surface 12 in FIG. 1, is assigned on both sides to a conveying element 14 formed from a set of rollers, these two conveying elements 14 together in relation to the conveying surface 12 in question in the direction of the center Axle 13 are designed to be movable by means of a drive means, not shown.
  • the length of the conveying surface 12 with the conveying elements 14 on both sides is essentially the same length as the other conveying surface 11 located at the bottom in FIG. 1.
  • FIG. 2 The mode of operation of the overall device according to FIG. 1 is explained in more detail below with particular reference to FIG. 2, wherein in this FIG. 2 below the stack S shown, the reference number of the individual device 1, 2, 3 or 4 is given, in which the The stack is located in each case and the stages taking place in the device in question are reproduced with added letter indices a, b, etc.
  • the funding level is indicated by dashed lines with the letter F.
  • the first stage representation in FIG. 2 therefore illustrates that a stack S has been formed in the palletizer 1, which consists of a number of normal layers 15 and an upper special layer 16 with lateral recesses 17, each of the layers 15 and 16 being formed according to a specific packing pattern.
  • the stack S passes from the palletizer 1 via the intermediate conveyor 5 into the combination device 2, where the stack is first covered with a short shrink film hood 18, as shown at 2a.
  • a long, first shrink film hood 19 is then pulled over the stack S, and the conveying and standing path 7 of the combination device 2 is raised, as shown in FIG. 2b.
  • the lower region of the stack is now in such a position with respect to the shrinking burner 9 of the combination device 2 that good shrinking is ensured in this lower region of the stack, as shown in FIG.
  • the common frame 8 then moves upwards and shrinks the two shrink hoods 18 and 19 closely onto the stack, which is not shown in more detail. Possibly. the complete shrinking of the two hoods 18 and 19 can also take place after a first shrinking in the lower region of the stack from top to bottom, with the result that the air within the stack largely escapes.
  • the conveying and standing path 7 of the combination device 2 is then lowered again and the stack is transported via the intermediate conveyor 5 onto the conveying surface 11 of the turning device 3.
  • the conveying surfaces 11 and 12 are moved together and then the conveying elements 14 arranged on both sides of the shorter upper conveying surface 12 are lowered into the niches 17, as shown in FIG. 3a, as a result of which these niches are shaped properly.
  • the stack S is then rotated through 180 °, as shown in FIG. 3b, and laterally transported back via the intermediate conveyor 5 onto the conveying and standing path 7 of the combination device 2, as shown in FIG. 3c.
  • a second or counter hood 20 is pulled over as shown in FIG.
  • FIG. 2e subsequently the shrinking of this second or counter hood 20 onto the stack is shown as FIG. 2e.
  • This is followed by a renewed transport of the stack via the intermediate conveyor 5 to the turning device 3 onto the shorter conveying surface 12, which is still located below, with the subsequent entry of the conveying elements 14 into the recesses 17 for re-profiling the same as 3d and 3e.
  • the stack S which is now completely wrapped and shrink-wrapped, is transported laterally onto the discharge conveyor 4 as shown in FIGS. 3f and 4a, whereupon the finished stack is then transported away by means of lifting elements 21, for example the forks of a forklift, such as 4b. reproduces.
  • the exemplary embodiment described can be modified in many ways without departing from the basic idea of the invention.
  • the turning and profiling device combined according to the invention can also be used advantageously in connection with differently designed shrink film application and shrinking devices, for example in a method in which instead of a second shrink film hood or counter hood a more or less deep after turning the stack flat film depending on the side surfaces of the stack is applied to the turned stack and shrunk, likewise in a suitably designed combined shrink film application and shrinking device.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Attitude Control For Articles On Conveyors (AREA)
  • Packages (AREA)
  • Wrapping Of Specific Fragile Articles (AREA)

Abstract

An arrangement for manufacturing non-pelletized packaging units which are completely surrounded with shrinking foil. The packaging units are formed by several layers of objects which are stacked on top of each other in such a way that at least two parallel recesses are formed into which support members of a lifting device can engage. The arrangement includes a single shrinking foil application device and a single shrinking device forming a combined arrangement and having a common conveyor and support track. Shaping tools of a shaping device are permanently assigned to an appropriate conveyor surface of a turning device. The shaping tools can be moved into position for shaping the shrinking foil in the recesses after a first shrinking foil has been applied and shrunk onto the stack. After turning the stack, the shaping tools are moved into a release position. The shaping tools can then again be moved into position for shaping the shrinking foil in the recesses after the stack has been returned to the combined arrangement and a second shrinking foil has been slid over the stack and shrunk onto the stack and the stack has then again been moved into the turning device. The shaping tools can then be moved into a release position, so that the stacks can be laterally moved away.

Description

Die Erfindung betrifft eine Vorrichtung zur Durchführung eines Verfahrens zur Herstellung einer vollständig mit Schrumpffolie umhüllten, palettenlosen, mehrere Schichten aufeinandergestapelter Gegenstände enthaltenden Verpackungseinheit, wobei zunächst mehrere Schichten von Gegenständen mit gleicher Grundfläche übereinandergestapelt werden auf die dann eine Sonderschicht von Gegenständen derart gestapelt wird, daß mindestens zwei einander parallele Nischen für das spätere Angreifen von Tragorganen eines Hubgerätes gebildet werden, darauf eine erste Schrumpffolie auf den gesamten Stapel aufgebracht wird, welche nachfolgend durch Wärmeaufbringung eng an den Stapel geschrumpft wird, worauf der gesamte Stapel um 180° derart gedreht wird, daß die Sonderschicht mit den Nischen nach unten kommt, worauf eine zweite Schrumpffolie auf den Stapel aufgebracht und nachfolgend durch Wärmeaufbringung eng an den Stapel geschrumpft wird, wobei vor dem Wenden des Stapels und nach dem Anschrumpfen der zweiten Schrumpffolie die Schrumpffolien in den Nischen ausgeformt werden, mit Schrumpffolienaufbringvorrichtung, Schrumpfvorrichtung, einer zwei von entgegengesetzten Seiten gegen den Stapel bewegliche Förderflächen aufweisenden Wendevorrichtung und einer einzigen mit letzterer kombinierten Profiliervorrichtung zum Ausformen der Schrumpffolien in den Nischen, deren einer der beiden Förderflächen der Wendevorrichtungen zuzuordnende Formwerkzeuge vor dem Wenden des Stapels in Formstellung verbringbar und während des Wendens des Stapel in Formstellung haltbar sind.The invention relates to a device for carrying out a method for producing a packaging unit completely wrapped with shrink film and containing a plurality of layers of objects stacked on top of one another, first of all several layers of objects with the same base area are stacked on top of one another, and then a special layer of objects is stacked in such a way that at least two mutually parallel niches are formed for the later attack of the supporting elements of a lifting device, a first shrink film is applied to the entire stack, which is subsequently shrunk tightly to the stack by application of heat, whereupon the entire stack is rotated by 180 ° in such a way that the Special layer with the niches comes down, whereupon a second shrink film is applied to the stack and subsequently shrunk tightly to the stack by application of heat, before turning the stack and after shrinking the tw Since the shrink film is formed in the niches, the shrink film is provided with a shrink film applicator, a shrink device, a turning device having two conveying surfaces that can be moved against the stack from opposite sides, and a single profiling device combined with the latter to form the shrink films in the niches, one of the two conveying surfaces of which is assigned to the turning devices Forming tools can be brought into the mold position before the stack is turned over and can be held in the mold position while the stack is being turned.

Bei einer bekannten Vorrichtung dieser Art (DE-PS-27 43 568) sind die Formwerkzeuge in der Wendevorrichtung von einem zweiteiligen, relativ komplizierten Formrahmen gebildet, der vor dem Einfahren eines Stapels mit auf diesen aufgebrachter erster Schrumpffolie einer der beiden Förderflächen der Wendevorrichtung zugeführt und nach dem Einfahren des Stapels mit erster Schrumpffolie beim Zusammenfahren der beiden Förderflächen der Wendevorrichtung von oben in die Nischen der Sonderschicht des Stapels eingefahren wird und nach dem Wenden des Stapels die Wendevorrichtung mit dem gewendeten Stapel verläßt und mit dem Stapel durch eine zweite Schrumpffolienaufbringvorrichtung und eine zweite Schrumpfvorrichtung transportiert wird, um dann vom Stapel getrennt und zur Wendevorrichtung zurückgeführt zu werden. Diese bekannte Vorrichtung ist zwar sehr günstig zur Bildung sehr formbeständiger und stabiler Stapel, vorrichtungsmäßig aber sehr aufwendig und raumbeanspruchend.In a known device of this type (DE-PS-27 43 568), the molding tools in the turning device are formed by a two-part, relatively complicated molding frame, which is fed to one of the two conveying surfaces of the turning device before the insertion of a stack with the first shrink film applied to it after retracting the stack with the first shrink film when moving the two conveying surfaces of the turning device from above into the niches of the special layer of the stack and after turning the stack, the turning device leaves with the stack turned and with the stack by a second shrink film applicator and a second Shrinking device is transported to then be separated from the stack and returned to the turning device. Although this known device is very inexpensive for forming very stable and stable stacks, the device is very expensive and takes up space.

Bekannt ist es ferner (DE-PS-27 60 249), bei Anlagen mit einem geringeren Leistungsbedarf zur Verringerung des apparativen Aufwands die Wendevorrichtung zwischen einer einzigen Schrumpffolienaufbringvorrichtung und einer einzigen Schrumpfvorrichtung anzuordnen, so daß nach dem Aufbringen der ersten Schrumpffolie die Wendevorrichtung ohne Wenden von dem betreffenden Stapel lediglich passiert und dann die erste Schrumpffolie in der Schrumpfvorrichtung angeschrumpft werden kann, worauf der Stapel zur Wendevorrichtung zurückfährt, dort gewendet wird, in die Schrumpffolienaufbringvorrichtung zurückbewegt und dort mit der zweiten Schrumpffolie überzogen und dann unter erneutem einfachen Passieren der Wendevorrichtung wieder in die Schrumpfvorrichtung zum Anschrumpfen der zweiten Schrumpffolie transportiert wird. Zum Profilieren der Nischen müssen bei dieser bekannten Anlage allerdings zusätzlich auch noch zwei Profiliereinrichtungen vorgesehen sein, nämlich eine vor der Schrumpfvorrichtung zum Profilieren der Nischen, wenn diese oben sind und eine nach der Schrumpfvorrichtung zum Profilieren der Nischen, wenn diese nach dem Wenden des Stapels unten sind.It is also known (DE-PS-27 60 249) to arrange the turning device between a single shrink film applicator and a single shrinking device in systems with a lower power requirement to reduce the outlay on apparatus, so that after the application of the first shrink film the turning device without turning only passes the stack in question and then the first shrink film can be shrunk in the shrinking device, whereupon the stack moves back to the turning device, is turned there, moved back into the shrink film application device and covered there with the second shrink film and then again simply by passing the turning device back into the Shrinking device for shrinking the second shrink film is transported. For profiling the niches in this known system, however, two profiling devices must also be provided, namely one in front of the shrinking device for profiling the niches when they are on top and one after the shrinking device for profiling the niches when they are turned after the stack has been turned down are.

Aufgabe der Erfindung ist es nun, eine Lösung zu schaffen, welche den erforderlichen Raumbedarf und apparativen Aufwand weiter verringert, insbesondere bei Anlagen mit einem geringeren Leistungsbedarf ähnlich der Vorrichtung gemäß DE-PS-27 60 249 und gleichzeitig möglichst formbeständige und stabile Stapel ähnlich der Vorrichtung gemäß DE-PS-27 43 568 bildet.The object of the invention is to provide a solution which further reduces the required space and equipment, especially in systems with a lower power requirement similar to the device according to DE-PS-27 60 249 and at the same time as stable and stable stack similar to the device forms according to DE-PS-27 43 568.

Bei einer Vorrichtung der eingangs bezeichneten Art wird diese Aufgabe gemäß der Erfindung dadurch gelöst, daß die einzige Schrumpffolienaufbringvorrichtung und die einzige Schrumpfvorrichtung als Kombinationsvorrichtung mit einer gemeinsamen Förder- und Standbahn ausgebildet sind und daß die Formwerkzeuge der Profiliervorrichtung der betreffenden Förderfläche der nachgeschalteten Wendevorrichtung fest zugeordnet und mittels an der Wendevorrichtung angeordneter Antriebsmittel nach dem Aufbringen und Anschrumpfen der ersten Schrumpffolie in Formstellung in die Nischen, nach dem Wenden des Stapels in Freigabestellung und nach Rückführung des Stapels zur kombinierten Schrumpffolienaufbring- und Schrumpfvorrichtung und dortigem Überziehen und Anschrumpfen der zweiten Schrumpffolie und darauf erneutem Zuführen zur Wendevorrichtung zum Nachprofilieren der Nischen wieder in Formstellung und nachfolgend zum seitlichen Abtransportieren des Stapels erneut in Freigabestellung bewegbar sind.In a device of the type mentioned, this object is achieved according to the invention in that the only shrink film application device and the only shrinking device are designed as a combination device with a common conveying and standing path and in that the shaping tools of the profiling device are permanently assigned to the relevant conveying surface of the downstream turning device and by means of drive means arranged on the turning device after the application and shrinking of the first shrink film in the form position in the niches, after turning the stack in the release position and after returning the stack to the combined shrink film application and shrinking device and there covering and shrinking of the second shrink film and re-feeding thereon can be moved to the turning device for re-profiling the niches again in the shape position and subsequently for the lateral removal of the stack again in the release position.

Aufgrund dieser Ausgestaltung ergibt sich zunächst eine wesentlich kompaktere Gesamtanlage, nämlich eine Verkürzung der Anlage um die Hälfte, weil anstelle von sechs in Linie angeordneten Einzelvorrichtungen, nämlich Palettierer, Schrumpffolienaufbringvorrichtung, Wendevorrichtung, Profiliervorrichtung oben, Schrumpfvorrichtung und Profiliervorrichtung unten nur noch drei Einzelvorrichtungen in Linie anzuordnen sind, nämlich Palettierer, kombinierte Schrumpffolienaufbring- und Schrumpfvorrichtung und Wendevorrichtung mit Profiliervorrichtung oben und unten. Außerdem ergeben sich wesentlich geringere Wegezeiten zwischen den einzelnen Vorrichtungen und auch etwas kürzere Funktionszeiten in den Einzelvorrichtungen, wie nachfolgend noch näher erläutert wird. Schließlich ist auch trotz Komplizierung und Mehraufwand für die kombinierten Einzelvorrichtungen der apparative Gesamtaufwand geringer, weil bei der kombinierten Schrumpffolienaufbring- und Schrumpfvorrichtung ein Gestell für bisher zwei Maschinen und bei der kombinierten Wende- und Profiliervorrichtung ein Gestell für bisher drei Maschinen verwendbar ist und jeweils eine entsprechende Zahl von Förderflächen für die Einzelmaschinen und von diese miteinander verbindenen Förderabschnitten entfällt.Due to this design, there is initially a much more compact overall system, namely a shortening of the system by half, because instead of six individual devices arranged in line, namely palletizers, shrink film applicator, turning device, profiling device above, shrinking device and profiling device below, only three individual devices are to be arranged in line are, namely palletizers, combined shrink film application and shrinking device and turning device with profiling device above and below. In addition, there are significantly shorter travel times between the individual devices and also somewhat shorter operating times in the individual devices, as will be explained in more detail below. Finally, despite the complication and additional effort for the combined individual devices, the overall outlay in terms of apparatus is less, because in the combined shrink film application and shrinking device a frame for previously two machines and in the combined turning and profiling device one frame for previously three machines and a corresponding one each can be used The number of conveying areas for the individual machines and the conveying sections connecting them to one another is eliminated.

In Weiterbildung der Erfindung ergibt sich eine besonders vorteilhafte Ausgestaltung, wenn als Formwerkzeuge vor dem Anfang und hinter dem Ende der betreffenden Förderfläche der Wendevorrichtung zwischen dieser und jeweils dem vor- bzw. nachgeschalteten Förderer je ein in die Nischen bis zum Anschlag an deren waagerechte Wände einfahrbares Förderelement vorgesehen ist, wobei die betreffende .Förderfläche mit den beidseitigen Förderelementen eine Länge aufweist, die etwa der Länge der gegenüberliegenden Förderfläche entspricht, teilweise ähnlich, wie dies bei einer Vorrichtung zum Profilieren der unten befindlichen Nischen eines Stapels bereits bekannt ist (DE-PS 28 39 089).In a further development of the invention, a particularly advantageous embodiment results if, as molding tools before the start and after the end of the conveying surface of the turning device in question, between this and the respective upstream or downstream conveyor, one can be inserted into the niches up to the stop on their horizontal walls Conveyor element is provided, with the respective conveyor surface with the conveyor elements on both sides having a length which corresponds approximately to the length of the opposite conveyor surface, in some cases similar to that which is already known for a device for profiling the niches located below a stack (DE-PS 28 39 089).

Dabei kann jedes Förderelement als Rollensatz ausgebildet sein, wie dies zum Ein- und Ausfahren des Stapels mit unten befindlichen Nischen in die bzw. aus der Wendevorrichtung besonders günstig ist.Each conveyor element can be designed as a set of rollers, as is particularly favorable for moving the stack in and out with niches located at the bottom into and out of the turning device.

Jedes Förderelement kann aber grundsätzlich auch als Förderband oder Mehrfach-Riementrieb ausgebildet sein.In principle, however, each conveyor element can also be designed as a conveyor belt or multiple belt drive.

Zweckmäßig kann man die Ausbildung dabei derart treffen, daß die Bewegungen der Förderelemente an die Nischen unterschiedlich bemessener Verpackungseinheiten bzw. Stapel anpaßbar sind.Appropriately, the training can be made such that the movements of the conveying elements can be adapted to the niches of differently sized packaging units or stacks.

Schließlich kann der Förderer der kombinierten Schrumpffolienaufbringvorrichtung- und Schrumpfvorrichtung vor dem Beginn des Schrumpfens anhebbar und nach dem Anschrumpfen der Schrumpffolie im untersten Bereich des Stapels wieder absenkbar sein, damit der bei einer kombinierten Schrumpffolienaufbring- und Schrumpfvorrichtung oberhalb von die Schrumpffolie aufbringenden Elementen an einem gemeinsamen heb- und senkbaren Rahmen angeordnete Schrumpfbrenner o. dgl. den untersten Bereich des Stapels gut erreichen kann.Finally, the conveyor of the combined shrink film applicator and shrink device can be raised before the start of shrinking and can be lowered again after shrinking on the shrink film in the lowest region of the stack, so that in the case of a combined shrink film applicator and shrink device above the elements applying the shrink film on a common lift - and lowerable frame arranged shrinking torch or the like can easily reach the lowest area of the stack.

Die Erfindung ist nachstehend anhand der Zeichnung beispielsweise näher erläutert. Diese zeigt in :

  • Fig. 1 eine schematische Seitenansicht der Gesamtvorrichtung gemäß der Erfindung,
  • Fig. 2 eine schematische Übersicht der Arbeitsabläufe der Gesamtvorrichtung gemäß Fig. 1,
  • Fig. 3 eine schematische Darstellung der Funktions- und Wegezeiten der bekannten Anlage nach DE-PS-27 60 249 und in
  • Fig. 4 eine Fig. 3 ähnliche Darstellung der Funktions- und Wegezeiten der Vorrichtung gemäß der Erfindung.
The invention is explained below with reference to the drawing, for example. This shows in:
  • 1 is a schematic side view of the overall device according to the invention,
  • 2 shows a schematic overview of the work processes of the overall device according to FIG. 1,
  • Fig. 3 is a schematic representation of the function and travel times of the known system according to DE-PS-27 60 249 and in
  • Fig. 4 is a Fig. 3 similar representation of the function and travel times of the device according to the invention.

Die in Fig. 1 wiedergegebene Gesamtanlage weist einen Palettierer 1 üblicher Bauweise, eine kombinierte Schrumpffolienaufbring- und Schrumpfvorrichtung 2, ebenfalls grundsätzlich bekannter Art, und eine grundsätzlich neu gestaltete Wendevorrichtung 3 auf, sowie einen letzterer nachgeschalteten Abnahmeförderer 4 und Zwischenförderer 5 zwischen Palettierer 1 und kombinierter Schrumpffolienaufbring- und Schrumpfvorrichtung 2 und letzterer und der Wendevorrichtung 3.The overall system shown in Fig. 1 has a palletizer 1 of conventional design, a combined shrink film application and shrinking device 2, also of a basically known type, and a fundamentally redesigned turning device 3, as well as a downstream acceptance conveyor 4 and intermediate conveyor 5 between palletizer 1 and a combined one Shrink film application and shrinking device 2 and the latter and the turning device 3.

Die Kombinationsvorrichtung 2 ist mit einer mittels Scherenhubwerk 6 heb- und senkbaren Förder- und Standbahn 7 ausgerüstet sowie mit einem vorzugsweise mittels nicht gezeigter Ketten heb- und senkbaren Rahmen 8, an dem oben ein ringsum verlaufender Schrumpfbrenner 9 o. dgl. angeordnet ist sowie unten in Form von Spreizfingern ausgebildete Elemente 10 zum Aufbringen von Schrumpffolienhauben auf einen auf der Förder und Standbahn befindlichen, in Fig. 1 der Übersichtlichkeit halber nicht dargestellten Stapel (in Fig. 2 mit S bezeichnet).The combination device 2 is equipped with a conveyor and standing track 7, which can be raised and lowered by means of scissors lifting mechanism 6, and with a frame 8, which can preferably be raised and lowered by means of chains, not shown, on which an all-round shrinking torch 9 or the like is arranged, as well as below Elements 10 in the form of spreading fingers for applying shrink film hoods to a stack located on the conveying and standing path and not shown in FIG. 1 for the sake of clarity (labeled S in FIG. 2).

Die Wendevorrichtung 3 ist mit zwei gegenläufig zueinander beweglichen Förderflächen 11 und 12 versehen, die insgesamt mit ihren die Gegeneinanderbeweglichkeit ermöglichenden Führungen und Antriebsmitteln um eine Achse 13 drehbar sind, dies alles wie bisher bekannt.The turning device 3 is provided with two conveying surfaces 11 and 12 which are movable in opposite directions and which, as a whole, can be rotated about an axis 13 with their guides and drive means which enable the movement towards one another, all as previously known.

Neu bei der Wendevorrichtung 3 ist, daß einer der beiden Förderflächen, nämlich der in Fig. 1 oberen Förderfläche 12 beidseitig je ein aus einem Rollensatz gebildetes Förderelement 14 zugeordnet ist, wobei diese beiden Förderelemente 14 gemeinsam gegenüber der betreffenden Förderfläche 12 in Richtung auf die mittige Achse 13 mittels nicht dargestellter Antriebsmittel beweglich ausgebildet sind. Die Länge der Förderfläche 12 mit den beidseitigen Förderelementen 14 ist dabei im wesentlichen gleichlang wie die andere in Fig. 1 unten befindliche Förderfläche 11.A new feature of the turning device 3 is that one of the two conveying surfaces, namely the upper conveying surface 12 in FIG. 1, is assigned on both sides to a conveying element 14 formed from a set of rollers, these two conveying elements 14 together in relation to the conveying surface 12 in question in the direction of the center Axle 13 are designed to be movable by means of a drive means, not shown. The length of the conveying surface 12 with the conveying elements 14 on both sides is essentially the same length as the other conveying surface 11 located at the bottom in FIG. 1.

Die Wirkungsweise der Gesamtvorrichtung gemäß Fig. 1 ist nachstehend unter besonderem Bezug auf Fig. 2 näher erläutert, wobei in dieser Fig. 2 unterhalb des dargestellten Stapels S jeweils das Bezugszeichen der Einzelvorrichtung 1, 2, 3 oder 4 angegeben ist, in der sich der Stapel jeweils befindet und mit hinzugesetzten Buchstaben-Indizes a, b usw. hintereinander in der betreffenden Vorrichtung stattfindende Stadien wiedergegeben sind. Die Förderebene ist durch gestrichelte Linien mit dem Buchstaben F gekennzeichnet.The mode of operation of the overall device according to FIG. 1 is explained in more detail below with particular reference to FIG. 2, wherein in this FIG. 2 below the stack S shown, the reference number of the individual device 1, 2, 3 or 4 is given, in which the The stack is located in each case and the stages taking place in the device in question are reproduced with added letter indices a, b, etc. The funding level is indicated by dashed lines with the letter F.

Die erste Stadiendarstellung in Fig. 2 verdeutlicht demnach, daß im Palettierer 1 ein Stapel S gebildet worden ist, der aus einer Anzahl von Normalschichten 15 und einer oberen Sonderschicht 16 mit seitlichen Nischen 17 besteht, wobei jede der Schichten 15 und 16 nach einem bestimmten Packmuster gebildet ist. Aus dem Palettierer 1 gelangt der Stapel S über den Zwischenförderer 5 in die Kombinationsvorrichtung 2, wo der Stapel zunächst mit einer kurzen Schrumpffolienhaube 18 überzogen wird, wie bei 2a gezeigt ist. Anschließend wird eine lange erste Schrumpffolienhaube 19 über den Stapel S gezogen, und die Förder- und Standbahn 7 der Kombinationsvorrichtung 2 angehoben, wie 2b zeigt. Der untere Bereich des Stapels befindet sich nun in einer solchen Stellung zum Schrumpfbrenner 9 der Kombinationsvorrichtung 2, daß ein gutes Anschrumpfen in diesem unteren Bereich des Stapels gewährleistet ist, wie 2c zeigt. Anschließend fährt der gemeinsame Rahmen 8 dann aufwärts und schrumpft dabei die beiden Schrumpfhauben 18 und 19 eng an den Stapel an, was nicht näher dargestellt ist. Ggf. kann das vollständige Anschrumpfen der beiden Hauben 18 und 19 auch nach einem ersten Anschrumpfen im unteren Bereich des Stapels von oben nach unten erfolgen, womit erreicht werden soll, daß die Luft innerhalb des Stapels weitgehend entweicht.The first stage representation in FIG. 2 therefore illustrates that a stack S has been formed in the palletizer 1, which consists of a number of normal layers 15 and an upper special layer 16 with lateral recesses 17, each of the layers 15 and 16 being formed according to a specific packing pattern. The stack S passes from the palletizer 1 via the intermediate conveyor 5 into the combination device 2, where the stack is first covered with a short shrink film hood 18, as shown at 2a. A long, first shrink film hood 19 is then pulled over the stack S, and the conveying and standing path 7 of the combination device 2 is raised, as shown in FIG. 2b. The lower region of the stack is now in such a position with respect to the shrinking burner 9 of the combination device 2 that good shrinking is ensured in this lower region of the stack, as shown in FIG. 2c. Then the common frame 8 then moves upwards and shrinks the two shrink hoods 18 and 19 closely onto the stack, which is not shown in more detail. Possibly. the complete shrinking of the two hoods 18 and 19 can also take place after a first shrinking in the lower region of the stack from top to bottom, with the result that the air within the stack largely escapes.

Darauf wird die Förder- und Standbahn 7 der Kombinationsvorrichtung 2 wieder abgesenkt und der Stapel über den Zwischenförderer 5 auf die Förderfläche 11 der Wendevorrichtung 3 transportiert. Die Förderflächen 11 und 12 werden zusammengefahren und anschließend die beidseits der kürzeren oberen Förderfläche 12 angeordneten Förderelemente 14 in die Nischen 17 abgesenkt, wie 3a zeigt, wodurch ein sauberes Ausformen dieser Nischen erfolgt. Dann wird der Stapel S um 180° gedreht, wie 3b zeigt und seitlich über den Zwischenförderer 5 zurück auf die Förder- und Standbahn 7 der Kombinationsvorrichtung 2 transportiert, wie 3c zeigt. In der Kombinationsvorrichtung 2 erfolgt das Überziehen einer zweiten oder Konterhaube 20 wie 2d zeigt und nachfolgend das Anschrumpfen dieser zweiten oder Konterhaube 20 an den Stapel wie 2e wiedergibt. Darauf erfolgt ein erneuter Transport des Stapels über den Zwischenförderer 5 zur Wendevorrichtung 3 auf die hier noch unten befindliche kürzere Förderfläche 12 mit nachfolgendem Einfahren der Förderelemente 14 in die Nischen 17 zum Nachprofilieren derselben wie 3d und 3e wiedergeben. Nach ausreichendem Erkalten der Schrumpffolien wird der nun vollständig mit Schrumpffolie umhüllte und angeschrumpfte Stapel S seitlich auf den Abgabeförderer 4 transportiert wie 3f und 4a wiedergeben, worauf dann schließlich der fertige Stapel mittels Huborganen 21, beispielsweise der Gabelzinken eines Gabelstaplers, abtransportiert wird, wie 4b. wiedergibt.The conveying and standing path 7 of the combination device 2 is then lowered again and the stack is transported via the intermediate conveyor 5 onto the conveying surface 11 of the turning device 3. The conveying surfaces 11 and 12 are moved together and then the conveying elements 14 arranged on both sides of the shorter upper conveying surface 12 are lowered into the niches 17, as shown in FIG. 3a, as a result of which these niches are shaped properly. The stack S is then rotated through 180 °, as shown in FIG. 3b, and laterally transported back via the intermediate conveyor 5 onto the conveying and standing path 7 of the combination device 2, as shown in FIG. 3c. In the combination device 2, a second or counter hood 20 is pulled over as shown in FIG. 2d and subsequently the shrinking of this second or counter hood 20 onto the stack is shown as FIG. 2e. This is followed by a renewed transport of the stack via the intermediate conveyor 5 to the turning device 3 onto the shorter conveying surface 12, which is still located below, with the subsequent entry of the conveying elements 14 into the recesses 17 for re-profiling the same as 3d and 3e. After the shrink films have cooled sufficiently, the stack S, which is now completely wrapped and shrink-wrapped, is transported laterally onto the discharge conveyor 4 as shown in FIGS. 3f and 4a, whereupon the finished stack is then transported away by means of lifting elements 21, for example the forks of a forklift, such as 4b. reproduces.

Zur Verdeutlichung der Vorteile der Erfindung gegenüber dem Stand der Technik sind in den Fig. 3 und 4 die Wege- und Funktionszeiten der bekannten Vorrichtung gemäß DE-PS 27 60 249 (Fig. 3) und der erfindungsgemäßen Vorrichtung (Fig. 4) einander gegenübergestellt, wobei die Wegezeiten in Richtung der Koordinatenachse y und die Funktionszeiten in Richtung der Koordinatenachse x schematisch dargestellt sind. Dabei sind die einzelnen Arbeitsschritte wie folgt mit Buchstaben bezeichnet:

  • Palettieren A
  • Schrumpffolienaufbringen B
  • Wenden C
  • Profilieren, oben D
  • Schrumpfen E
  • Profilieren, unten F und jeweils in ein eine Einzelvorrichtung andeutendes Rechteck eingetragen.
To illustrate the advantages of the invention compared to the prior art, the travel and operating times of the known device according to DE-PS 27 60 249 (FIG. 3) and the device according to the invention (FIG. 4) are compared with one another in FIGS. 3 and 4 , wherein the travel times in the direction of the coordinate axis y and the function times in the direction of the coordinate axis x are shown schematically. The individual work steps are designated with letters as follows:
  • Palletizing A
  • Apply shrink film B
  • Turn C
  • Profiling, top D
  • Shrink E
  • Profiling, below F and each entered in a rectangle indicating a single device.

Daraus ergibt sich vor allem, daß die Wegezeiten ganz beträchtlich, nämlich fast um das Dreifache geringer bei der erfindungsgemäßen Vorrichtung sind als beim Stand der Technik, aber auch bei den Funktionszeiten sich noch eine wenn auch gerinfügigere Verringerung ergibt.The main result of this is that the travel times are quite considerable, namely almost three times less in the device according to the invention than in the prior art, but there is also a slight reduction in the operating times.

Natürlich ist das beschriebene Ausführungsbeispiel in vielfacher Weise abzuändern, ohne den Grundgedanken der Erfindung zu verlassen. So kann von der erfindungsgemäß kombinierten Wende- und Profiliervorrichtung auch in Verbindung mit anders gestalteten Schrumpffolienaufbring- und Schrumpfvorrichtungen mit Vorteil Gebrauch gemacht werden, beispielsweise bei einem Verfahren, bei dem anstelle einer zweiten Schrumpffolienhaube bzw. Konterhaube nach dem Wenden des Stapels eine mehr oder weniger tief an den Seitenflächen des Stapels herabhängende Flachfolie auf den gewendeten Stapel aufgebracht und geschrumpft wird, ebenfalls in einer entsprechend gestalteten kombinierten Schrumpffolienaufbring- und Schrumpfvorrichtung.Of course, the exemplary embodiment described can be modified in many ways without departing from the basic idea of the invention. Thus, the turning and profiling device combined according to the invention can also be used advantageously in connection with differently designed shrink film application and shrinking devices, for example in a method in which instead of a second shrink film hood or counter hood a more or less deep after turning the stack flat film depending on the side surfaces of the stack is applied to the turned stack and shrunk, likewise in a suitably designed combined shrink film application and shrinking device.

Claims (7)

1. Apparatus for carrying out a process for the production of a pallet-less packaging unit (S) which is entirely encased with shrink foil and which includes a plurality of layers of articles stacked one upon the other, wherein firstly a plurality of layers (15) of articles with the same base surface are stacked in superposed relationship, on to which a special layer (16) of articles is then stacked in such a way that at least two mutually parallel recesses (17) for the subsequent engagement of support members of a lift device are formed, thereupon a first shrink foil (19) is applied to the entire stack and is then shrunk closely to the stack by the application of heat, whereupon the entire stack is turned through 180° in such a way that the special layer with the recesses comes to the bottom, whereupon a second shrink foil (20) is applied to the stack and then shrunk closely to the stack by the application of heat, wherein the shrink foils are shaped into the recesses prior to the operation of turning the stack and after the operation of shrinking the second shrink foil, comprising shrink foil application means (2), shrink means (2), a turning means (3) which has two conveyor surfaces (11, 12) which are movable from opposite sides towards the stack and a single profiling means which is combined with the turning means, for shaping the shrink foils in the recesses, the profiling means having shaping tools (14) which are to be associated with one of the two conveyor surfaces of the turning means and which can be moved into the shaping position prior to the operation of turning the stack and can be held in the shaping position during the operation of turning the stack, characterised in that the single shrink foil application means and the single shrink means are in the form of a combination means (2) with a common conveying and standing track (7) and that the shaping tools (14) of the profiling means are fixedly associated with the respective conveyor surface (12) of the turning means (3) disposed downstream thereof, and are movable by means of drive means arranged on the turning means into the shaping position into the recesses (17) after application and shrinkage of the first shrink foil (18-19), into a release position after the operation of turning the stack (S), and into the shaping position again for post- profiling of the recesses (17) after return of the stack to the combined shrink foil application and shrink means (2) and after the operation performed therein of coating the stack with and shrinkage of the second shrink foil (20) and returning it again to the turning means (3), and then into the release position again for laterally conveying the stack (S) away.
2. Apparatus according to claim 1 characterised in that a conveyor element (14) which can be introduced into the recesses (17) until it bears against the horizontal walls thereof is provided as each of the shaping tools in front of the beginning and behind the end of the respective conveyor surface (12) of the turning means (3) between same and a respective one of the conveyors (4, 5) connected upstream and downstream thereof respectively, wherein the conveyor surface (12) in question, with the conveyor elements (14) at both sides, is of a length which approximately corresponds to the length of the oppositely disposed conveyor surface (11).
3. Apparatus according to claim 2 characterised in that each conveyor element is in the form of a set of rollers (14).
4. Apparatus according to claim 2 characterised in that each conveyor element is in the form of a conveyor belt.
5. Apparatus according to claim 2 characterised in that each conveyor element is in the form of a multiple belt drive.
6. Apparatus according to claim 2 or one of the following claims characterised in that the movements of the conveyor elements (14) can be adapted to the recesses (17) of stacks (S) of different dimensions.
7. Apparatus according to claim 1 or one of the following claims characterised in that the conveying and standing track (7) of the combined shrink foil application and shrink means (2) can be lifted prior to the beginning of the shrink operation and can be lowered again after the operation of shrinking the shrink foil in the lowermost region of the stack (S).
EP87100308A 1986-06-25 1987-01-13 Apparatus for producing a pallet-less packaging unit entirely wrapped with shrink foil Expired EP0250697B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87100308T ATE42520T1 (en) 1986-06-25 1987-01-13 DEVICE FOR PRODUCTION OF A PALLET-LESS PACKAGING UNIT COMPLETELY WRAPPED WITH SHRINK FILM.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3621296 1986-06-25
DE19863621296 DE3621296A1 (en) 1986-06-25 1986-06-25 DEVICE FOR PRODUCING A PALLETLESS PACKAGING UNIT COMPLETELY COVERED WITH SHRINK FILM

Publications (2)

Publication Number Publication Date
EP0250697A1 EP0250697A1 (en) 1988-01-07
EP0250697B1 true EP0250697B1 (en) 1989-04-26

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ID=6303679

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EP87100308A Expired EP0250697B1 (en) 1986-06-25 1987-01-13 Apparatus for producing a pallet-less packaging unit entirely wrapped with shrink foil

Country Status (9)

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US (1) US4724652A (en)
EP (1) EP0250697B1 (en)
JP (1) JPH0825545B2 (en)
CN (1) CN1008169B (en)
AT (1) ATE42520T1 (en)
DE (2) DE3621296A1 (en)
ES (1) ES2007571B3 (en)
RU (1) RU1773251C (en)
UA (1) UA11238A (en)

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DK0519116T3 (en) * 1990-09-13 1996-01-15 Hannen Reiner Develog Method for coating a goods stack with a stretch film cap and device for carrying out the method
IT1282609B1 (en) * 1996-02-13 1998-03-31 Italdibipack Spa PACKAGING MACHINE FOR DIFFERENT PRODUCTS IN HEAT SHRINK PLASTIC FILM
GB2363788B (en) * 1999-01-04 2003-02-26 David William Clarke Shield for bottle and method
US6772575B2 (en) * 2002-12-30 2004-08-10 Lantech Management Corp. And Lantech Holding Corp. Shrink wrap apparatus and method of shrink wrapping products
DK2036818T3 (en) * 2007-11-30 2011-08-29 Moellers Maschf Gmbh Process for manufacturing a palleless packaging unit
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DE102010019282B4 (en) 2010-05-04 2019-06-19 Maschinenfabrik Möllers Gmbh Device for producing a packaging unit
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ITPR20130067A1 (en) * 2013-08-30 2015-03-01 Forpac S R L SHRINKER AND COLD PACKAGING PROCEDURE OF OBJECTS WITH EXTENSIBLE FILM
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EP3312099B1 (en) * 2016-10-18 2019-03-20 Maschinenfabrik Möllers GmbH Method for producing a pallet-free packaging unit and packaging unit manufactured according to this method
JP6647345B2 (en) * 2018-06-14 2020-02-14 コアレックス信栄株式会社 Manufacturing method of package
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Also Published As

Publication number Publication date
DE3621296A1 (en) 1988-01-14
CN87102880A (en) 1988-01-06
JPH0825545B2 (en) 1996-03-13
UA11238A (en) 1996-12-25
ES2007571B3 (en) 1991-11-01
CN1008169B (en) 1990-05-30
JPS6312434A (en) 1988-01-19
EP0250697A1 (en) 1988-01-07
RU1773251C (en) 1992-10-30
US4724652A (en) 1988-02-16
ATE42520T1 (en) 1989-05-15
DE3760116D1 (en) 1989-06-01

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