EP0250647A1 - Apparatus for fitting a shrink foil hood over a stack and shrinking it on said stack - Google Patents
Apparatus for fitting a shrink foil hood over a stack and shrinking it on said stack Download PDFInfo
- Publication number
- EP0250647A1 EP0250647A1 EP86117386A EP86117386A EP0250647A1 EP 0250647 A1 EP0250647 A1 EP 0250647A1 EP 86117386 A EP86117386 A EP 86117386A EP 86117386 A EP86117386 A EP 86117386A EP 0250647 A1 EP0250647 A1 EP 0250647A1
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- European Patent Office
- Prior art keywords
- stack
- shrinking
- gripping elements
- frame
- devices
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
- B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
- B65B9/13—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the preformed tubular webs being supplied in a flattened state
- B65B9/135—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the preformed tubular webs being supplied in a flattened state for palletised loads
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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
- B65B53/063—Tunnels
Definitions
- the invention relates to a device for covering and shrinking a shrink film hood over or to a stack formed from a number of packaging objects with a height-movable frame, on which shrinking devices are arranged in the upper region and gripping elements in the lower region for gripping and pulling down the lower edge of the shrink film hood .
- Known devices of this type have the advantage over separate devices for covering a shrink film hood and a redesigned shrinking device that work can be carried out more quickly because the transfer times from the hood pulling device to the shrinking device are eliminated, as is the time for retracting the gripping elements to pull the hood over in the separate hood pulling device and when using a lifting and lowering shrink frame, the time for its return movement after the shrinking process has ended.
- the shrink film hood can be pulled over when the height-adjustable frame is lowered and the shrinking can take place when the latter is raised or retracted.
- the object of the invention is to provide a solution by means of which the functions of the two known devices described above are combined in a single device without having to increase the overall height of the combination device.
- this object is achieved in that a lifting device is arranged in the middle below the stack, by means of which the stack is transported by a conveyor into and out of the device for shrinking the lower edge of the shrink film hood into the area of the Can be raised and lowered again after shrinking, as in principle in association with a Shrink hood pulling station for turning over the lower edge of the shrink film hood is known from EP 0 077 508, and that furthermore a vertical relative mobility is formed between the gripping elements and the shrinking devices on the vertically movable frame.
- the shrinking devices and the gripping elements between the stack and the devices located above them take up relatively little space and that in the lower position of the vertically movable frame the gripping elements for covering the lower edge of the shrink film hood can be moved further down from the effective range of the shrinking devices or have been moved before the downward movement of the height-adjustable frame, so that the gripping elements can detach from the shrink film hood after being pulled over and secondly when the shrink film hood is pulled over Commissioning of the shrinking devices for effecting a good shrinking after prior lifting of the stack by means of the lifting device provided according to the invention are not in the way, the same space for lifting the stack is available, which in the lowered position of the stack for securely grasping the lower edge of the shrink film hood by means of the height-adjustable frame arranged gripping elements is needed.
- the gripping elements can be raised and lowered within limits by means of at least one pneumatic or hydraulic drive cylinder along corresponding vertical guides on the common frame.
- the heat shield has two sliding plates which move from the laterally inactive position to the abutting shielding position are zontally displaceable. As can be seen, this means that practically no additional height is required.
- a stack of goods 3 is arranged within a frame 1 on a carriageway 2.
- a roller 4 is mounted in the frame, on which a plastic tube made of heat-shrinkable material is wound with gussets.
- the flat-lying hose 5 is over deflection rollers 6 and drive rollers 7 fed to a pre-spreading device, which consists of guide elements 8 arranged vertically movable in the area of the folded hose edges, below which a separating device 9 and a welding device 10 are arranged.
- a pre-spreading device which consists of guide elements 8 arranged vertically movable in the area of the folded hose edges, below which a separating device 9 and a welding device 10 are arranged.
- two roof conveyor-type double conveyor belts 11 are arranged on both sides of the frame 1, the upper receiving ends being located directly below the guide elements 8 in their lowered position.
- the double conveyor belts 11 are arranged so as to be pivotable about upper reversing wheel axes 19 of the lower conveyor belts, in such a way that the distance between their discharge ends can be changed to adapt to different cross-sectional dimensions of the stack of goods 3.
- Each double conveyor belt 11 is assigned a pivot lever 12 which is arranged approximately parallel to the assigned double conveyor belt and can be pivoted about a lower fixed point 13 by means of an actuating device 14.
- endless chains 15 are mounted, to which a frame 16 which is vertically movable by means of the chains 15 is fastened and in each of its four corner regions has a vertical guide 17, along each of which a gripping element 18 by means of a drive cylinder 20 is vertically movable between two stops 21.
- a circumferential rectangular shrinking burner 22 Arranged above the vertical guides 17 on the frame 16 is a circumferential rectangular shrinking burner 22 which can direct hot gases in the direction of the stack 3 of goods in a manner not shown in any more detail.
- a heat shield 23 is arranged below the double conveyor belts 11, which essentially consists of two sliding plates 24, which can be moved horizontally from the laterally inactive position according to FIG. 1 to the closed position according to FIG. 2.
- a lifting device 25 is arranged between the track 2 formed by chain conveyors, by means of which the stack of goods 3 can be moved from the position resting on the track 2 according to FIG. 1 to the raised position according to FIG. 2.
- the operation of the device is as follows: the hose 5 is opened via the guide elements 8 and the double conveyor belts 11 and after the lower end of the hose has run out of the double conveyor belts 1 a little, the gripping elements 18 which are pivoted inwards are inserted into the hose and moved outwards so that the hose is stretched tight between the gripping elements 18 located at the four corners of the stack of goods, as shown in FIG. 1. Then the double conveyor belts 11 and the transport chains 15 are actuated and the hose is removed a little from the stack 3 pulled up. Then the guide elements 8 are moved upwards and the welding and separating devices 9 and 10 are actuated.
- the double conveyor belts 11 are put into operation again and at the same time the pivoting levers 12 are pivoted downward, as a result of which the folded tube edges are pressed or pulled out of the receiving ends of the double conveyor belts.
- the frame 16 with the gripping elements 17 and the shrinking frame 22 is moved further downward until the stack of goods is completely covered by the hose hood now formed.
- the stack of goods 3 is raised by means of the lifting device 25 and the gripping fingers 18 are moved downwards along the vertical guides 17, as shown in FIG. 2, in such a way that the gripping elements 18 are pulled out of the hose , wherein the lower edge 26 of the hose hood hangs a little over the lower end of the stack 3.
- the two sliding plates 24 of the heat shield 23 are moved together, as shown in FIG. 2, so that when the shrinking torch is subsequently actuated, rising heat does not overlap the section of the hose 5 before being pulled over the stack can unfavorably soften.
- the shrinking torch 22 is switched on, which in the position according to FIG. 2 is directed so that the lower edge 26 of the hose is blown against the underside of the stack and at the same time shrunk onto it, as shown in a dotted manner in FIG. 2.
- the lifting device 25 is then actuated to lower the stack 3, so that the folded-over lower edge 26 is fixed between the stack and the carriageway 2.
- the frame 16 is moved upwards again, so that the shrinking torch 22 shrinks the side surfaces of the hose 5 onto the stack.
- the drive cylinder 20 is actuated to move the gripping elements 18 upward, so that the frame is again in the starting position for a new work cycle, as shown in FIG. 1.
- the gripping devices arranged above the vertically movable frame for opening and holding the hose open during the pulling-over movement of the hose could also be designed differently or be omitted entirely if one can accept the appropriate stacks of material that the hose then pulls over the stack above its upper one Edges grinds.
- other shrinking devices such as infrared shrinking devices could also be arranged on the vertically movable frame instead of a shrinking burner and the like. More.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Basic Packing Technique (AREA)
- Specific Conveyance Elements (AREA)
- Coating Apparatus (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Stacking Of Articles And Auxiliary Devices (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zum Überziehen und Anschrumpfen einer Schrumpffolienhaube über bzw. an einen aus einer Anzahl von Verpackungsgegenständen gebildeten Stapel mit einem höhenbeweglichen Rahmen, an dem im oberen Bereich Schrumpfeinrichtungen und im unteren Bereich Greifelemente zum Erfassen und Abwärtsziehen des unteren Randes der Schrumpffolienhaube angeordnet sind.The invention relates to a device for covering and shrinking a shrink film hood over or to a stack formed from a number of packaging objects with a height-movable frame, on which shrinking devices are arranged in the upper region and gripping elements in the lower region for gripping and pulling down the lower edge of the shrink film hood .
Bekannte Vorrichtungen dieser Art (WO 82/03833) weisen gegenüber gesonderten Vorrichtungen zum Überziehen einer Schrumpffolienhaube und einer nachgestalteten Schrumpfvorrichtung den Vorteil auf, daß schneller gearbeitet werden kann, weil die Überführungszeiten von der Haubenüberziehvorrichtung zur Schrumpfvorrichtung entfallen, ebenso wie die Zeit zum Zurückfahren der Greifelemente zum Überziehen der Haube in der gesonderten Haubenüberziehvorrichtung und bei Verwendung eines heb- und senkbaren Schrumpfrahmens die Zeit für dessen Rückfahrbewegung nach beendetem Schrumpfvorgang. Bei einer kombinierten Vorrichtung der betreffenden Art kann nämlich das Überziehen der Schrumpffolienhaube beim Absenken des höhenbeweglichen Rahmens und das Anschrumpfen beim Wiederanheben bzw. Zurückfahren desselben erfolgen.Known devices of this type (WO 82/03833) have the advantage over separate devices for covering a shrink film hood and a redesigned shrinking device that work can be carried out more quickly because the transfer times from the hood pulling device to the shrinking device are eliminated, as is the time for retracting the gripping elements to pull the hood over in the separate hood pulling device and when using a lifting and lowering shrink frame, the time for its return movement after the shrinking process has ended. In the case of a combined device of the type in question, the shrink film hood can be pulled over when the height-adjustable frame is lowered and the shrinking can take place when the latter is raised or retracted.
Bekannt sind ferner Vorrichtungen (EP 0 077 508), mittels welcher ein besonders guter Unterschrumpf der über den Stapel gezogenen Schrumpffolienhaube dadurch erreicht wird, daß der Stapel beim Überziehen der Schrumpffolienhaube angehoben und nach dem Umschlagen bzw. Unterschrumpfen des unteren Randes der Schrumpfhaube wieder abgesetzt wird, derart, daß dann der umgeschlagene bzw. untergeschrumpfte Rand der Schrumpfhaube während des weiteren Schrumpfens der Seitenflächen der überzogenen Schrumpfhaube festgehalten wird, d.h. beim Verkürzen der Schrumpffolien während des Schrumpfens der Seitenflächen nicht wieder von der Unterseite des Stapels zurückgezogen werden kann.Devices are also known (EP 0 077 508), by means of which particularly good shrinking of the shrink film hood pulled over the stack is achieved in that the stack is lifted when the shrink film hood is pulled over and is set down again after the lower edge of the shrink hood has been folded over or shrunk down , in such a way that the folded or shrunk edge of the shrink hood is then held in place during the further shrinking of the side surfaces of the covered shrink hood, ie when shrinking the shrink film while shrinking the side surfaces can not be pulled back from the bottom of the stack.
Aufgabe der Erfindung ist die Schaffung einer Lösung, mittels welcher die Funktionen beider vorbeschriebenen bekannten Vorrichtungen in einer einzigen Vorrichtung kombiniert sind, ohne dabei die Bauhöhe der Kombinationsvorrichtung vergrößern zu müssen.The object of the invention is to provide a solution by means of which the functions of the two known devices described above are combined in a single device without having to increase the overall height of the combination device.
Bei einer Vorrichtung der eingangs bezeichneten Art wird diese Aufgabe dadurch gelöst, daß mittig unterhalb des Stapels eine Hubeinrichtung angeordnet ist, mittels welcher der Stapel von einem diesen in die und aus der Vorrichtung transportierenden Förderer zum Unterschrumpfen des unteren Randes der Schrumpffolienhaube bis in den Bereich des Förderers anhebbar und nach dem Unterschrumpfen wieder absenkbar ist, wie dies im Prinzip in Zuordnung zu einer Schrumpfhaubenüberziehstation zum Umschlagen des unteren Randes der Schrumpffolienhaube aus EP 0 077 508 bekannt ist, und daß ferner zwischen den Greifelementen und den Schrumpfeinrichtungen an dem höhenbeweglichen Rahmen eine vertikale Relativbeweglichkeit ausgebildet ist.In a device of the type described above, this object is achieved in that a lifting device is arranged in the middle below the stack, by means of which the stack is transported by a conveyor into and out of the device for shrinking the lower edge of the shrink film hood into the area of the Can be raised and lowered again after shrinking, as in principle in association with a Shrink hood pulling station for turning over the lower edge of the shrink film hood is known from EP 0 077 508, and that furthermore a vertical relative mobility is formed between the gripping elements and the shrinking devices on the vertically movable frame.
Aufgrund dieser Ausgestaltung wird erreicht, daß in oberster Stellung des höhenbeweglichen Rahmens die Schrumpfeinrichtungen und die Greifelemente zwischen dem Stapel und darüber befindlichen Einrichtungen, wie Greifereinrichtungen zum Öffnen und Offenhalten des Schrumpfschlauches während des Überziehvorganges relativ wenig Raum beanspruchen und daß in unten befindlicher Stellung des höhenbeweglichen Rahmens die Greifelemente zum Überziehen des unteren Randes der Schrumpffolienhaube aus dem Wirkungsbereich der Schrumpfeinrichtungen weiter abwärts bewegt werden können oder schon vor der Abwärtsbewegung des höhenbeweglichen Rahmens bewegt worden sind, so daß einerseits die Greifelemente sich nach dem Überziehen der Schrumpffolienhaube von dieser lösen können und zum anderen beim Inbetriebsetzen der Schrumpfeinrichtungen zur Bewirkung eines guten Unterschrumpfs nach vorangegangenem Anheben des Stapels mittels der erfindungsgemäß vorgesehenen Hubeinrichtung nicht im Wege stehen, wobei der gleiche Raum zum Anheben des Stapels zur Verfügung steht, der in abgesenkter Stellung des Stapels für das sichere Erfassen des unteren Randes der Schrumpffolienhaube mittels der am höhenbeweglichen Rahmen angeordneten Greifelemente benötigt wird.Because of this configuration it is achieved that in the uppermost position of the vertically movable frame, the shrinking devices and the gripping elements between the stack and the devices located above them, such as gripper devices for opening and keeping open the shrink tube during the pulling-up process, take up relatively little space and that in the lower position of the vertically movable frame the gripping elements for covering the lower edge of the shrink film hood can be moved further down from the effective range of the shrinking devices or have been moved before the downward movement of the height-adjustable frame, so that the gripping elements can detach from the shrink film hood after being pulled over and secondly when the shrink film hood is pulled over Commissioning of the shrinking devices for effecting a good shrinking after prior lifting of the stack by means of the lifting device provided according to the invention are not in the way, the same space for lifting the stack is available, which in the lowered position of the stack for securely grasping the lower edge of the shrink film hood by means of the height-adjustable frame arranged gripping elements is needed.
Eine besonders einfache Ausbildung ergibt sich dabei, wenn die Greifelemente gegenüber dem höhenbeweglichen Rahmen vertikal beweglich ausgebildet sind.A particularly simple design results if the gripping elements are designed to be vertically movable relative to the height-movable frame.
Zweckmäßig kann man dabei die Greifelemente mittels mindestens eines pneumatischen oder hydraulischen Antriebszylinders längs entsprechender vertikaler Führungen an dem gemeinsamen Rahmen in Grenzen heb- und senkbar ausgestalten.Expediently, the gripping elements can be raised and lowered within limits by means of at least one pneumatic or hydraulic drive cylinder along corresponding vertical guides on the common frame.
Um bei der erfindungsgemäß ermöglichten relativ niedrigen Bauhöhe der Gesamtvorrichtung zu verhindern, daß die beim Betätigen der Schrumpfeinrichtungen aufsteigende Wärme die oberhalb des Stapels befindliche Schrumpffolie für den nächsten Überziehvorgang vorzeitig erweicht, ist es in Weiterbildung der Erfindung zweckmäßig, zwischen höhenstationären oberen Greifeinrichtungen zum Öffnen und Offenhalten des Schlauches beim Überziehen über den Stapel und den in seiner obersten Stellung befindlichen höhenbeweglichen Rahmen einer Wärmeabschirmung anzuordnen, wie dies grundsätzlich bei einfachen Schrumpfeinrichtungen mittels eines Kaltluftstromes schon bekannt ist (DE-GM 85 13 892).In order to prevent, with the relatively low overall height of the overall device made possible according to the invention, that the heat rising when the shrinking devices are actuated prematurely softens the shrink film located above the stack for the next covering process, it is expedient in a further development of the invention to open and hold open between upper stationary gripping devices to arrange the hose when pulling it over the stack and the height-adjustable frame of a heat shield in its uppermost position, as is already known in principle for simple shrinking devices by means of a cold air flow (DE-GM 85 13 892).
Besonders vorteilhaft ist es dabei, wenn die Wärmeabschirmung zwei Schiebeplatten aufweist, die aus seitlich unwirksamer Stellung in aneinanderstoßende Abschirmstellung hori zontal verschiebbar sind. Wie erkennbar ist, wird dadurch praktisch keine zusätzliche Bauhöhe benötigt.It is particularly advantageous if the heat shield has two sliding plates which move from the laterally inactive position to the abutting shielding position are zontally displaceable. As can be seen, this means that practically no additional height is required.
Die Erfindung ist nachstehend anhand der Zeichnung beispielsweise näher erläutert. Diese zeigt in:
- Fig. 1 eine Vorrichtung gemäß der Erfindung in Seitenansicht mit in oberster Stellung befindlichem höhenbeweglichen Rahmen und abgesenktem Stapel sowie Wärmeabschirmung in unwirksamer Stellung,
- Fig. 2 eine Vorrichtung gemäß Fig. 1 mit in unterster Stellung befindlichem höhenbeweglichen Rahmen und in unterster Stellung befindlichen Greifelementen und mittels Hubeinrichtung angehobenem Stapel sowie in Abschirmstellung befindlicher Wärmeabschirmung und in
- Fig. 3 ein vergrößertes Detaill A aus Fig. 1 mit Betätigungseinrichtung für die Greifelemente.
- 1 is a side view of a device according to the invention with the vertically movable frame in the uppermost position and the stack lowered, and heat shielding in the inactive position,
- Fig. 2 shows a device according to FIG. 1 with the vertically movable frame in the lowest position and the gripping elements in the lowest position and the stack raised by means of the lifting device and in the shielding position of the heat shield and in
- Fig. 3 shows an enlarged detail A from Fig. 1 with actuating device for the gripping elements.
Bei der in der Zeichnung wiedergegebenen Vorrichtung ist innerhalb eines Gestells 1 auf einer Fahrbahn 2 ein Gutstapel 3 angeordnet. Im Gestell ist eine Rolle 4 gelagert, auf der ein Kunststoffschlauch aus wärmeschrumpffähigem Material mit Seitenfalten aufgewickelt ist. Der flachliegende Schlauch 5 wird über Umlenkrollen 6 und Antriebsrollen 7 einer Vorspreizeinrichtung zugeführt, die aus im Bereich der gefalteten Schlauchränder vertikal beweglich angeordneten Leitelementen 8 besteht, unterhalb welcher eine Trenneinrichtung 9 sowie eine Schweißeinrichtung 10 angeordnet sind. Unterhalb der Leitelemente 8 sind auf beiden Seiten des Gestells 1 zei dachförmig angeordnete Doppelförderbänder 11 angeordnet, wobie die oberen Aufnahmeenden unmittelbar unterhalb der Leitelemente 8 in deren abgesenkter Stellung befindlich sind. Die Doppelförderbänder 11 sind um obere Umkehrräderachsen 19 der unteren Förderbänder schwenkbar angeordnet, derart, daß der Abstand ihrer Abgabeenden zur Anpassung an verschiedene Querschnittsabmessungen des Gutstapels 3 veränderbar ist. Jedem Doppelförderband 11 ist ein Schwenkhebel 12 zugeordnet, der etwa parallel zu dem zugeordneten Doppelförderband angeordnet ist und um einen unteren Festpunkt 13 mittels einer Betätigungseinrichtung 14 schwenkbar ist.In the device shown in the drawing, a stack of
Im Gestell 1 sind in der Nähe der vier Ecken desselben endlos umlaufende Ketten 15 gelagert, an denen ein mittels der Ketten 15 höhenbeweglicher Rahmen 16 befestigt ist, der in seinen vier Eckbereichen jeweils eine Vertikalführung 17 aufweist, längs welcher je ein Greifelement 18 mittels eines Antriebszylinder 20 zwischen zwei Anschlägen 21 vertikal beweglich ist.In the frame 1, in the vicinity of the four corners of the same,
Oberhalb der Vertikalführungen 17 ist am Rahmen 16 ein ringsum verlaufender rechteckiger Schrumpfbrenner 22 angeordnet, der in nicht näher dargestellter Weise Heißgase in Richtung auf den Gutstapel 3 richten kann.Arranged above the
Unterhalb der Doppelförderbänder 11 ist eine Wärmeabschirmung 23 angeordnet, welche im wesentliche aus zwei Schiebeplatten 24 besteht, welche aus seitlich unwirksamer Stellung gemäß Fig. 1 in geschlossene Stellung gemäß Fig. 2 horizontal verschoben werden können. Schließlich ist zwischen der von Kettenförderern gebildeten Fahrbahn 2 eine Hubeinrichtung 25 angeordnet, mittels welcher der Gutstapel 3 aus der auf der Fahrbahen 2 ruhenden Stellung gemäß Fig. 1 in angehobene Stellung gemäß Fig. 2 verbracht werden kann.A
Die Wirkungsweise der Vorrichtung ist wie folgt: Der Schlauch 5 wird über die Leitelemente 8 und die Doppelförderbänder 11 geöffnet und nachdem das untere Ende des Schlauches ein Stück aus den Doppelförderbändern 1 herausgelaufen ist, werden die ein Stück einwärts verschwenkten Greifelemente 18 in den Schlauch eingefahren und nach außen bewegt, so daß der Schlauch stramm zwischen den an den vier Ecken des Gutstapels befindlichen Greifelementen 18 aufgespannt ist, wie dies Fig. 1 zeigt. Darauf werden die Doppelförderbänder 11 und die Transportketten 15 betätigt und der Schlauch wird über den Gutstapel 3 ein Stück ab wärts gezogen. Dann werden die Leitelemente 8 nach oben gefahren und die Schweiß- und Trenneinrichtungen 9 und 10 werden betätigt. Anschließend werden die Doppelförderbänder 11 wieder in Betrieb gesetzt und gleichzeitig die Schwenkhebel 12 abwarts geschwenkt, wodurch die gefalteten Schlauchränder aus den Aufnahmeenden der Doppelförderbänder herausgedrückt bzw. -gezogen werden. Gleichzeitig wird auch der Rahmen 16 mit den Greifelementen 17 und dem Schrumpfrahmen 22 weiter abwärts bewegt, bis der Gutstapel vollständig von der jetzt gebildeten Schlauchhaube überzogen ist.The operation of the device is as follows: the
Während des Abwärtsfahrens des Rahmens 16 oder auch schon vorher wird der Gutstapel 3 mittels der Hubeinrichtung 25 angehoben und werden die Greiffinger 18 längs der Vertikalführungen 17 abwärts bewegt, so wie dies Fig. 2 zeigt, derart, daß die Greifelemente 18 aus dem Schlauch herausgezogen werden, wobei der untere Rand 26 der Schlauchhaube ein Stück über das untere Ende des Gutstapels 3 herabhängt. Nach dem vollständigen Überziehen des Schlauches über den Stapel werden die beiden Schiebeplatten 24 der Wärmeabschirmung 23 zusammengefahren, wie dies Fig. 2 zeigt, so daß bei der nachfolgenden Betätigung des Schrumpfbrenners aufsteigende Wärme den oberhalb befindlichen Abschnitt des Schlauches 5 vor dem Überziehen über den Stapel nicht in unvorteilhafter Weise erweichen kann.During the downward movement of the frame 16 or even beforehand, the stack of
Daraufhin wird der Schrumpfbrenner 22 eingeschaltet, der in der Stellung gemäß Fig. 2 so gerichtet ist, daß der untere Rand 26 des Schlauches gegen die Unterseite des Stapels geblasen und gleichzeitig an diese angeschrumpft wird, wie dies punktiert in Fig. 2 dargestellt ist. Daraufhin wird die Hubeinrichtung 25 zum Absenken des Stapels 3 betätigt, so daß der umgeschlagene untere Rand 26 zwischen Stapel und Fahrbahn 2 festgelegt ist. Gleichzeitig mit bzw. kurz nach dem Absenken des Gutstapels 3 wird der Rahmen 16 wieder aufwärtsbewegt, so daß der Schrumpfbrenner 22 die Seitenflächen des Schlauches 5 an den Stapel anschrumpft. Am Ende der Aufwärtsbewegung des Rahmens 16 wird der Antriebszylinder 20 zum Aufwärtsbewegen der Greifelemente 18 betätigt, so daß der Rahmen wieder in Ausgangsposition für einen neuen Arbeitszyklus ist, wie dies Fig. 1 zeigt. Je nach Art des Gutstapels 3 kann es auch empfehlenswert sei, nach dem Unterschrumpfen und Festlegen des unteren Randes 26 des Schlauches den Rahmen 16 zunächst ohne arbeitenden Schrumpfbrenner wieder nach oben zu fahren und dann erneut unter Inbetriebsetzen des Schrumpfbrenners 22 abzusenken, derart, daß das Schrumpfen von oben nach unten fortschreitet, um derart innerhalb des Stapels befindliche Luft möglichst weitgehend entweichen zu lassen.Thereupon, the shrinking
Natürlich sind zahlreiche Abänderungen der beschriebenen Vorrichtung möglich, ohne den Grundgedanken der Erfindung zu verlassen. So könnten die oberhalb des höhenbeweglichen Rahmens angeordneten Greifeinrichtungen zum Öffnen und Offenhalten des Schlauches während der Überziehbewegung des Schlauches auch anders gestaltet sein oder ganz entfallen, wenn man bei entsprechenden Gutstapeln in Kauf nehmen kann, daß dann der Schlauch beim Überziehen über den Stapel über dessen obere Kanten schleift. Auch könnten natürlich anstelle eines Schrumpfbrenners andere Schrumpfeinrichtungen wie Infrarotschrumpfeinrichtungen am höhenbeweglichen Rahmen angeordnet sein und dgl. mehr.Of course, numerous modifications of the described device are possible without the basic idea of the invention to leave. Thus, the gripping devices arranged above the vertically movable frame for opening and holding the hose open during the pulling-over movement of the hose could also be designed differently or be omitted entirely if one can accept the appropriate stacks of material that the hose then pulls over the stack above its upper one Edges grinds. Of course, other shrinking devices such as infrared shrinking devices could also be arranged on the vertically movable frame instead of a shrinking burner and the like. More.
Claims (5)
dadurch gekennzeichnet,
daß mittig unterhalb des Stapels (3) eine Hubeinrichtung (25) angeordnet ist, mittels welcher der Stapel von einem diesen in die und aus der Vorrichtung transportierenden Förderer (2) zum Unterschrumpfen des unteren Randes (26) der Schrumpffolienhaube (5) bis in den Bereich des Förderers anhebbar und nach dem Unterschrumpfen wieder absenkbar ist und daß zwischen den Greifelementen (18) und den Schrumpfeinrichtungen (22) an dem höhenbeweglichen Rahmen (16) eine vertikale Relativbeweglichkeit ausgebildet ist.1. Device for covering and shrinking a shrink film hood over bw. on a stack formed from a number of packaging objects with a height-adjustable frame, on which shrinking devices are arranged in the upper area and gripping elements for gripping and pulling down the lower edge of the shrink film hood are arranged in the lower area,
characterized,
that a lifting device (25) is arranged in the middle below the stack (3), by means of which the stack is transported from a conveyor (2) transporting it into and out of the device for shrinking the lower edge (26) of the shrink film hood (5) into the Area of the conveyor can be raised and lowered again after shrinking and that a vertical relative mobility is formed between the gripping elements (18) and the shrinking devices (22) on the vertically movable frame (16).
dadurch gekennzeichnet,
daß die Greifelemente (18) gegenüber dem höhenbeweglichen Rahmen (16) vertikal beweglich ausgebildet sind.2. Device according to claim 1,
characterized,
that the gripping elements (18) are vertically movable relative to the height-movable frame (16).
dadurch gekennzeichnet,
daß die Greifelemente (18) mittels mindestens eines pneumatischen oder hydraulischen Antriebszylinders (20) längs entsprechender vertikaler Führungen (17) an dem gemeinsamen Rahmen (16) in Grenzen heb- und senkbar sind.3. Device according to claim 2,
characterized,
that the gripping elements (18) can be raised and lowered within limits by means of at least one pneumatic or hydraulic drive cylinder (20) along corresponding vertical guides (17) on the common frame (16).
dadurch gekennzeichnet,
daß zwischen höhenstationären oberen Greifeinrichtungen (18) zum Öffnen und Offenhalten des Schlauches (5) beim Überziehen über den Stapel (3) und dem in seiner obersten Stellung befindlichen höhenbeweglichen Rahmen (16) eine Wärmeabschirmung (23) angeordnet ist.4. The device according to claim 1 or one of the following,
characterized,
that a heat shield (23) is arranged between height-stationary upper gripping devices (18) for opening and keeping open the hose (5) when pulled over the stack (3) and the vertically movable frame (16) located in its uppermost position.
dadurch gekennzeichnet,
daß die Wärmeabschirmung (23) zwei Schiebeplatten (24) aufweist, die aus seitlich unwirksamer Stellung in aneinanderstoßende Abschirmstellung horizontal verschiebbar sind.5. The device according to claim 4,
characterized,
that the heat shield (23) has two sliding plates (24) which are horizontally displaceable from the laterally inactive position in the abutting shielding position.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT86117386T ATE46886T1 (en) | 1986-06-25 | 1986-12-13 | DEVICE FOR COVERING AND SHRINKING A SHRINK FILM HOOD OVER RESPECTIVELY. TO A STACK. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19863621297 DE3621297A1 (en) | 1986-06-25 | 1986-06-25 | DEVICE FOR PULLING ON AND SHRINKING A SHRINK FILM HOOD OVER OR ON A STACK. |
DE3621297 | 1986-06-25 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0250647A1 true EP0250647A1 (en) | 1988-01-07 |
EP0250647B1 EP0250647B1 (en) | 1989-10-04 |
EP0250647B2 EP0250647B2 (en) | 1995-05-10 |
Family
ID=6303680
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86117386A Expired - Lifetime EP0250647B2 (en) | 1986-06-25 | 1986-12-13 | Apparatus for fitting a shrink foil hood over a stack and shrinking it on said stack |
Country Status (7)
Country | Link |
---|---|
US (1) | US4724658A (en) |
EP (1) | EP0250647B2 (en) |
JP (1) | JPS6312433A (en) |
AT (1) | ATE46886T1 (en) |
DE (2) | DE3621297A1 (en) |
ES (1) | ES2011447T5 (en) |
SU (1) | SU1625328A3 (en) |
Cited By (2)
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CN109896075A (en) * | 2019-04-08 | 2019-06-18 | 湖州师范学院求真学院 | A kind of automatic adhering device of marker post protective cloth of road and traffic sign plates |
IT201900024781A1 (en) * | 2019-12-19 | 2021-06-19 | Officina Bocedi S R L | Pallet coating machine |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
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DE8708145U1 (en) * | 1987-06-06 | 1987-08-06 | MSK-Verpackungs-Systeme GmbH, 4190 Kleve | Device for shrinking shrink hoods that surround a palletized stack of goods |
DE8816085U1 (en) * | 1988-12-24 | 1989-03-09 | MSK-Verpackungs-Systeme GmbH, 4190 Kleve | Device for packing a stack of goods arranged on a pallet |
DE3942391A1 (en) * | 1989-12-21 | 1991-06-27 | Lachenmeier Kurt Aps | Shrink-wrap equipment for pallet loads - has stretch action tubular feed and lifting pallet support |
DE9001321U1 (en) * | 1990-02-06 | 1990-04-12 | Develog, Reiner Hannen & Cie, Corgémont | Device for covering a stack of goods with stretch film covers |
DE4032228A1 (en) * | 1990-04-03 | 1991-10-10 | Hydraulik Vertrieb Hinners Gmb | Wrapping stacks of packages in stretch film - by sticking packages on pallet which is raised by power cylinder |
DE59106276D1 (en) * | 1990-09-13 | 1995-09-21 | Hannen Reiner Develog | Process for covering stretch film hoods over a stack of goods and device for carrying out the process. |
DE9310218U1 (en) * | 1993-07-09 | 1993-09-02 | MSK-Verpackungs-Systeme GmbH, 47533 Kleve | Device for shrinking a shrink hood pulled over a stack of goods |
ES2130024B1 (en) * | 1996-01-26 | 2000-01-16 | Mecanizacion Del Transporte Y | DEVICE AND PROCEDURE TO RETRACT A PLASTIC SHEET ON PALLETIZED GOODS. |
DE29611616U1 (en) * | 1996-07-04 | 1996-09-05 | Huisman, Robert, 47574 Goch | Device for covering and heat shrinking a shrink film hood over or on piece goods |
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. |
DE59807980D1 (en) * | 1998-11-05 | 2003-05-22 | Lachenmeier Kurt Aps | Method and device for shrinking a film onto an object |
EP1059233A1 (en) * | 1999-04-16 | 2000-12-13 | Kl- Lachenmeier A/S | Method and device for packaging objects in a film-hood |
DE19954370A1 (en) * | 1999-11-11 | 2001-05-31 | Moellers Maschf Gmbh | Shrink-wrapping method for stack of articles comprises fitting parallel inner and outer wraps over it |
ATE242720T1 (en) * | 2000-08-09 | 2003-06-15 | Lachenmeier As | METHOD AND DEVICE FOR PACKAGING ITEMS |
DE10103261A1 (en) * | 2001-01-25 | 2002-08-14 | Msk Verpackung Syst Gmbh | Method of covering a flat hose |
DE50308120D1 (en) * | 2002-04-19 | 2007-10-18 | Msk Verpackung Syst Gmbh | DEVICE AND METHOD FOR TURNING PIECE OR PACKING |
US7987653B2 (en) * | 2004-03-03 | 2011-08-02 | Adaptsys Limited | Plastic embossed carrier tape process |
CA2582379C (en) * | 2005-12-23 | 2014-06-03 | Les Plastiques Balcan Limitee | Apparatus for bagging material |
US7594375B2 (en) * | 2006-03-22 | 2009-09-29 | Jacques Dussault | Apparatus for bagging material |
EP2060492B1 (en) * | 2007-11-16 | 2011-11-30 | Msk-Verpackungs-Systeme Gesellschaft Mit Beschränkter Haftung | Device for drawing a tubular film or a film cover over a stack |
US7861500B2 (en) * | 2008-07-14 | 2011-01-04 | Bradley Arthur Bennett | Automatic cart bagger |
IT1394521B1 (en) * | 2008-12-19 | 2012-07-05 | Marpak Oms Group S R L | PACKING EQUIPMENT, PROVIDING THERMORETRIC OVEN AND HEAT PROTECTION MEANS. |
DE202010001587U1 (en) * | 2010-01-29 | 2010-04-22 | Msk - Verpackungs-Systeme Gmbh | Device for wrapping a stack of goods with a film |
DE102016212436B4 (en) * | 2016-07-07 | 2018-07-26 | Signode Industrial Group Llc | Packaging process and hood stretcher |
DE102019216346A1 (en) * | 2019-10-23 | 2021-04-29 | Signode Industrial Group Llc | Method and device for packaging a stack of goods in a tubular stretch film |
CN110834771A (en) * | 2019-11-22 | 2020-02-25 | 安徽永锋智能包装科技有限公司 | Bottom-closing method for transparent packaging bag of refrigerator |
CN110745306A (en) * | 2019-11-22 | 2020-02-04 | 安徽永锋智能包装科技有限公司 | Refrigerator packing bottom-closing equipment |
US11492155B2 (en) | 2020-05-14 | 2022-11-08 | Signode Industrial Group Llc | Stretch-hood machine |
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DE2146464A1 (en) * | 1970-09-18 | 1972-03-23 | Societe dApplicaüons Thermiques, Aix les Bains (Frankreich) | Device for applying an envelope to a load to be packaged |
EP0088424A1 (en) * | 1982-03-10 | 1983-09-14 | INDAG Gesellschaft für Industriebedarf mbH | Method and device for applying shrink foils to stacks of goods loaded on a pallet |
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DE2027648C3 (en) * | 1970-06-05 | 1973-10-11 | C. Keller U. Co., 4533 Laggenbeck | Device for wrapping stacks, in particular stacks of bricks |
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FR2473985A1 (en) * | 1980-01-17 | 1981-07-24 | Thimon | MACHINE FOR PACKING A LOAD IN A SHEET STRING IN A FLEXIBLE MATERIAL |
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 |
EP0077508B1 (en) * | 1981-10-16 | 1985-04-03 | MSK-Verpackungs-Systeme Gesellschaft mit beschränkter Haftung | Method and device for packaging goods stacked on a pallet |
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-
1986
- 1986-06-25 DE DE19863621297 patent/DE3621297A1/en active Granted
- 1986-12-13 DE DE8686117386T patent/DE3666025D1/en not_active Expired
- 1986-12-13 ES ES86117386T patent/ES2011447T5/en not_active Expired - Lifetime
- 1986-12-13 AT AT86117386T patent/ATE46886T1/en not_active IP Right Cessation
- 1986-12-13 EP EP86117386A patent/EP0250647B2/en not_active Expired - Lifetime
- 1986-12-24 JP JP61306704A patent/JPS6312433A/en active Pending
-
1987
- 1987-03-20 SU SU874202159A patent/SU1625328A3/en active
- 1987-04-15 US US07/038,784 patent/US4724658A/en not_active Expired - Lifetime
Patent Citations (3)
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DE2146464A1 (en) * | 1970-09-18 | 1972-03-23 | Societe dApplicaüons Thermiques, Aix les Bains (Frankreich) | Device for applying an envelope to a load to be packaged |
EP0088424A1 (en) * | 1982-03-10 | 1983-09-14 | INDAG Gesellschaft für Industriebedarf mbH | Method and device for applying shrink foils to stacks of goods loaded on a pallet |
FR2565554A1 (en) * | 1984-06-08 | 1985-12-13 | Pakem | Apparatus for shrinking for packaging a load |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109896075A (en) * | 2019-04-08 | 2019-06-18 | 湖州师范学院求真学院 | A kind of automatic adhering device of marker post protective cloth of road and traffic sign plates |
CN109896075B (en) * | 2019-04-08 | 2020-12-04 | 湖州师范学院求真学院 | Automatic adhesion equipment for sign post protection cloth of road traffic sign board |
IT201900024781A1 (en) * | 2019-12-19 | 2021-06-19 | Officina Bocedi S R L | Pallet coating machine |
EP3838771A1 (en) * | 2019-12-19 | 2021-06-23 | Officina Bocedi S.R.L. | Machine for wrapping pallets |
RU2769526C1 (en) * | 2019-12-19 | 2022-04-01 | Оффичина Бочеди С.Р.Л. | Pallet wrapping plant |
Also Published As
Publication number | Publication date |
---|---|
DE3666025D1 (en) | 1989-11-09 |
ATE46886T1 (en) | 1989-10-15 |
EP0250647B1 (en) | 1989-10-04 |
DE3621297A1 (en) | 1988-01-14 |
US4724658A (en) | 1988-02-16 |
SU1625328A3 (en) | 1991-01-30 |
JPS6312433A (en) | 1988-01-19 |
EP0250647B2 (en) | 1995-05-10 |
ES2011447T5 (en) | 1995-08-16 |
DE3621297C2 (en) | 1992-05-14 |
ES2011447B3 (en) | 1990-01-16 |
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