EP0250647B2 - 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
- EP0250647B2 EP0250647B2 EP86117386A EP86117386A EP0250647B2 EP 0250647 B2 EP0250647 B2 EP 0250647B2 EP 86117386 A EP86117386 A EP 86117386A EP 86117386 A EP86117386 A EP 86117386A EP 0250647 B2 EP0250647 B2 EP 0250647B2
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- European Patent Office
- Prior art keywords
- stack
- shrinking
- frame
- gripping elements
- respect
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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.)
- Expired - Lifetime
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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 onto 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 in the lower area for grasping and pulling down the lower edge of the shrink film , and with a lifting device for the stack, by means of which the stack can be raised by a conveyor that transports it into and out of the device for shrinking the lower edge of the shrink film hood.
- the grippers are moved out of the film hood and at the same time out of the radiation area of the heating devices by pivoting, that is to say by means of a relative movement which also contains a vertical component.
- the relative pivoting movement with the vertical component of the gripping devices is, however, only for the purpose of moving the gripping devices out of the hood, ie it is unable to bring about any vertical movement of the hood relative to the frame with shrinking devices.
- EP-A 133 462 a device which has a combined hood covering and shrinking device, but in which the hood covering device is arranged spatially separate from the shrinking device, i.e. the shrinking devices and the gripping elements for gripping and covering the shrink film are not arranged on a common height-movable frame.
- the object of the invention is to provide a solution by means of which a generic combination device can be improved such that the overall height of the combination device can be reduced.
- this object is achieved according to the invention in that the gripping elements moved for stretching the shrink film hood to its maximum cross-sectional area and the shrinking devices on the vertically movable ones Frames are arranged translationally movable relative to each other in the vertical direction.
- the shrinking devices and the gripping elements between the stack and the devices located above them take up relatively little space
- the gripping elements for covering the lower edge of the shrink film hood can be moved further downward out of the effective range of the shrinking devices or have already been moved before the downward movement of the height-adjustable frame, so that on the one hand the gripping elements can detach from the shrink film hood and the other with Commissioning of the shrinking devices for effecting a good lower shrinkage after lifting the stack beforehand by means of the lifting device provided according to the invention is not in the way are available, the same space for lifting the stack being available that is required in the lowered position of the stack for securely grasping the lower edge of the shrink film hood by means of the gripping elements arranged on the vertically movable frame.
- 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 can be displaced horizontally from the laterally inactive position into the abutting shielding position. As can be seen, there is practically no additional height 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 fed via deflection rollers 6 and drive rollers 7 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.
- Below the guide elements 8 are arranged on both sides of the frame 1 zei roof-shaped double conveyor belts 11, whereby the upper receiving ends are 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.
- endlessly circulating chains 15 are mounted, to which a frame 16 which is movable by means of the chains 15 is fastened and which in its four corner regions each 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.
- an all-round rectangular shrinking burner 22 Arranged above the vertical guides 17 on the frame 16 is an all-round rectangular shrinking burner 22 which can direct hot gases in the direction of the stack 3 of goods in a manner not shown in 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 into 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 a piece from the Double conveyor belts 1 has run out, the gripping elements 18, which are pivoted inwards a little, are moved into the hose and moved outwards, so that the hose is tightly stretched 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 tube is pulled a little bit downwards over the stack of goods 3. 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 shrink frame 22 is moved further downward until the stack of goods is completely covered by the hose hood now formed.
- the material stack 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 such 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 dotted lines 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 top 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)
- Coating Apparatus (AREA)
- Specific Conveyance Elements (AREA)
- Stacking Of Articles And Auxiliary Devices (AREA)
- Lining Or Joining Of Plastics Or The Like (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 Schrumpffolie angeordnet sind, und mit einer Hubeinrichtung für den Stapel, mittels welcher der Stapel von einen diesen in die und aus der Vorrichtung transportierenden Förderer zum Unterschrumpfen des unteren Randes der Schrumpffolienhaube anhebbar ist.The invention relates to a device for covering and shrinking a shrink film hood over or onto 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 in the lower area for grasping and pulling down the lower edge of the shrink film , and with a lifting device for the stack, by means of which the stack can be raised by a conveyor that transports it into and out of the device for shrinking the lower edge of the shrink film hood.
Bei einer bekannten Vorrichtung dieser Art (EP-A 0 088 424) ist die Rahmenkonstruktion mit zwei Rahmen beschrieben, die korrespondierend verfahren werden sollen, wobei ein Rahmen die Greifeinrichtungen und der andere die Schrumpfeinrichtungen trägt. Die zeichnerische Offenbarung läßt allerdings nur den Eindruck bzw. die Deutung zu, als würden beide Rahmen wie ein einziger Rahmen benutzt bzw. bewegt.In a known device of this type (EP-A 0 088 424), the frame construction is described with two frames which are to be moved correspondingly, one frame carrying the gripping devices and the other carrying the shrinking devices. The graphic revelation, however, only allows the impression or interpretation that both frames are used or moved as a single frame.
Bekannt sind ferner Vorrichtungen (DE 32 42 677 T1) mit einem gemeinsamen Rahmen für die Greifelemente und die Schrumpfeinrichtungen, wobei die Schrumpfeinrichtungen im wesentlichen weiter oben und die Greifeinrichtungen weiter unten angeordnet sind. Durch Schwenken, also durch eine Relativbewegung, die auch eine Vertikalkomponente enthält, werden die Greifer aus der Folienhaube und gleichzeitig aus dem Strahlungsbereich der Heizeinrichtungen herausbewegt. Die relative Schwenkbewegung mit vertikaler Komponente der Greifeinrichtungen erfolgt aber einzig zu dem Zweck, die Greifeinrichtungen aus der Haube herauszubewegen, d.h. vermag keine Vertikalbewegung der Haube gegenüber dem Rahmen mit Schrumpfeinrichtungen zu bewirken.Also known are devices (DE 32 42 677 T1) with a common frame for the gripping elements and the shrinking devices, the shrinking devices being arranged essentially further up and the gripping devices further down. The grippers are moved out of the film hood and at the same time out of the radiation area of the heating devices by pivoting, that is to say by means of a relative movement which also contains a vertical component. The relative pivoting movement with the vertical component of the gripping devices is, however, only for the purpose of moving the gripping devices out of the hood, ie it is unable to bring about any vertical movement of the hood relative to the frame with shrinking devices.
Ferner ist aus der EP-A 133 462 eine Vorrichtung bekannt, die eine kombinierte Haubenüberzieh- und Schrumpfeinrichtung aufweist, bei der aber die Haubenüberzieheinrichtung räumlich getrennt von der Schrumpfeinrichtung angeordnet ist, d.h. die Schrumpfeinrichtungen und die Greifelemente zum Erfassen und überziehen der Schrumpffolie sind nicht an einem gemeinsamen höhenbeweglichen Rahmen angeordnet.Furthermore, from EP-A 133 462 a device is known which has a combined hood covering and shrinking device, but in which the hood covering device is arranged spatially separate from the shrinking device, i.e. the shrinking devices and the gripping elements for gripping and covering the shrink film are not arranged on a common height-movable frame.
Aufgabe der Erfindung ist die Schaffung einer Lösung, mittels welcher eine gattungsgemäße Kombinationsvorrichtung derart verbessert werden kann, daß die Bauhöhe der Kombinationsvorrichtung verringerbar ist.The object of the invention is to provide a solution by means of which a generic combination device can be improved such that the overall height of the combination device can be reduced.
Bei einer gattungsgemäßen Vorrichtung der eingangs bezeichneten Art wird diese Aufgabe erfindungsgemäß dadurch gelöst, daß die für Aufspannung der Schrumpffolienhaube auf ihren maximalen Überzienquerschnitt bewegten Greifelemente und die Schrumpfeinrichtungen an den höhenbeweglichen Rahmen in vertikaler Richtung relativ zueinander translatorisch beweglich angeordnet sind.In a generic device of the type described in the introduction, this object is achieved according to the invention in that the gripping elements moved for stretching the shrink film hood to its maximum cross-sectional area and the shrinking devices on the vertically movable ones Frames are arranged translationally movable relative to each other in the vertical direction.
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.Due to 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 downward out of the effective range of the shrinking devices or have already been moved before the downward movement of the height-adjustable frame, so that on the one hand the gripping elements can detach from the shrink film hood and the other with Commissioning of the shrinking devices for effecting a good lower shrinkage after lifting the stack beforehand by means of the lifting device provided according to the invention is not in the way are available, the same space for lifting the stack being available that is required in the lowered position of the stack for securely grasping the lower edge of the shrink film hood by means of the gripping elements arranged on the vertically movable frame.
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 keep open between height-stationary upper gripping devices to arrange the hose when pulling over the stack and the height-movable frame in its uppermost position of a heat shield, 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 horizontal 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 can be displaced horizontally from the laterally inactive position into the abutting shielding position. As can be seen, there is practically no additional height 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 Detail A aus Fig. 1 mit Betätigungseinrichtung für die Greifelemente.
- Fig. 1 shows a device according to the invention in side view with the vertically movable frame in the uppermost position and the stack lowered as well as heat shield in ineffective 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 a 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 frame 1, in the vicinity of the four corners of the same, endlessly circulating
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
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 departing from the basic idea of the invention. 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 top 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)
- Apparatus for fitting a shrink foil cover (5) over a stack (3) formed from a number of packaging items, and shrinking the cover on to the stack, comprising a frame (16) which is movable in respect of height and which carries in the upper region shrinking means (22) and in the lower region gripping elements (18) for engaging and downwardly pulling the lower edge (26) of the shrink foil (5), and further comprising a lift means (25) for the stack (3), by means of which the stack (3) can be lifted from a conveyor (2) transporting the stack into and out of the apparatus, for shrinking the lower edge (26) of the shrink foil cover (5) under the stack, characterised in that the gripping elements (18) which are moved to spread out the shrink foil cover (5) to its maximum cross-section for fitting over the stack and the shrinking means (22) are arranged movably relative to each other with a translatory movement in a vertical direction on the frame (16) which is movable in respect of height.
- Apparatus according to claim 1 characterised in that the gripping elements (18) are designed to be movable vertically with respect to the frame (16) which is movable in respect of height.
- Apparatus according to claim 2 characterised in that the gripping elements (18) can be raised and lowered within limits along suitable vertical guides (17) on the common frame (16) by means of at least one pneumatic or hydraulic actuating cylinder (20).
- Apparatus according to claim 1 or one of the following claims characterised in that a heat shield means (23) is arranged between the upper gripping means (11), which are stationary in respect of height, for opening and keeping open the tube (5) when it is fitted over the stack (3), and the frame (16) which is movable in respect of height, when disposed in its uppermost position.
- Apparatus according to claim 4 characterised in that the heat shield means (23) comprises two sliding plates (24) which are horizontally slidable from a laterally inoperative position into a shielding position of bearing against each other.
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 |
---|---|---|---|
DE3621297 | 1986-06-25 | ||
DE19863621297 DE3621297A1 (en) | 1986-06-25 | 1986-06-25 | DEVICE FOR PULLING ON AND SHRINKING A SHRINK FILM HOOD OVER OR ON A STACK. |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0250647A1 EP0250647A1 (en) | 1988-01-07 |
EP0250647B1 EP0250647B1 (en) | 1989-10-04 |
EP0250647B2 true 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 (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8708145U1 (en) * | 1987-06-06 | 1987-08-06 | Msk-Verpackungs-Systeme Gmbh, 4190 Kleve, De | |
DE8816085U1 (en) * | 1988-12-24 | 1989-03-09 | Msk-Verpackungs-Systeme Gmbh, 4190 Kleve, De | |
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, Corgemont, Ch | |
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 |
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 |
DE9310218U1 (en) * | 1993-07-09 | 1993-09-02 | Msk Verpackung Syst Gmbh | 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 | Device for covering and heat shrinking a shrink film hood over or on piece goods |
ES2191898T3 (en) * | 1998-11-05 | 2003-09-16 | Lachenmeier Kurt Aps | PROCEDURE AND DEVICE FOR THE CONTRACTION OF A SHEET ON AN OBJECT. |
EP1000858B1 (en) * | 1998-11-05 | 2004-08-18 | Kurt Lachenmeier A/S | Method and device for applying and shrinking a packaging hood on an object |
EP1059233A1 (en) * | 1999-04-16 | 2000-12-13 | Kl- Lachenmeier A/S | Method and device for packaging objects in a film-hood |
ES2194656T3 (en) * | 2000-08-09 | 2003-12-01 | Lachenmeier As | PROCEDURE AND APPLIANCE TO PACK OBJECTS. |
DE10103261A1 (en) * | 2001-01-25 | 2002-08-14 | Msk Verpackung Syst Gmbh | Method of covering a flat hose |
ATE372260T1 (en) * | 2002-04-19 | 2007-09-15 | Msk Verpackung Syst Gmbh | DEVICE AND METHOD FOR FILLING PIECE OR PACKAGED GOODS |
US7987653B2 (en) * | 2004-03-03 | 2011-08-02 | Adaptsys Limited | Plastic embossed carrier tape process |
WO2007071063A1 (en) * | 2005-12-23 | 2007-06-28 | Les Plastiques Balcan Limitée | 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 |
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 |
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 |
IT201900024781A1 (en) | 2019-12-19 | 2021-06-19 | Officina Bocedi S R L | Pallet coating machine |
US11492155B2 (en) | 2020-05-14 | 2022-11-08 | Signode Industrial Group Llc | Stretch-hood machine |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2027648C3 (en) * | 1970-06-05 | 1973-10-11 | C. Keller U. Co., 4533 Laggenbeck | Device for wrapping stacks, in particular stacks of bricks |
SE404160B (en) * | 1974-05-11 | 1978-09-25 | Moellers Maschf | DEVICE FOR PULLING A HOSE OF HEAT CREAMABLE PLASTIC OVER A PACKAGE OF GOODS |
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 |
DE3208544A1 (en) * | 1982-03-10 | 1983-09-15 | INDAG Gesellschaft für Industriebedarf mbH, 6900 Heidelberg | METHOD AND DEVICE FOR APPLYING SHRINK FILMS ON PALLETED GOETER STACKS |
DE3327996A1 (en) * | 1983-08-03 | 1985-02-14 | MSK - Verpackungs-Systeme GmbH, 4190 Kleve | METHOD FOR PACKING PALLETIZED GOODS STACKS AND DEVICE FOR CARRYING OUT THIS METHOD |
FR2565554B1 (en) * | 1984-06-08 | 1986-10-17 | Pakem | SHRINKAGE APPARATUS FOR PACKAGING A LOAD |
-
1986
- 1986-06-25 DE DE19863621297 patent/DE3621297A1/en active Granted
- 1986-12-13 EP EP86117386A patent/EP0250647B2/en not_active Expired - Lifetime
- 1986-12-13 AT AT86117386T patent/ATE46886T1/en not_active IP Right Cessation
- 1986-12-13 ES ES86117386T patent/ES2011447T5/en not_active Expired - Lifetime
- 1986-12-13 DE DE8686117386T patent/DE3666025D1/en not_active Expired
- 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
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Also Published As
Publication number | Publication date |
---|---|
SU1625328A3 (en) | 1991-01-30 |
JPS6312433A (en) | 1988-01-19 |
ES2011447B3 (en) | 1990-01-16 |
DE3666025D1 (en) | 1989-11-09 |
EP0250647A1 (en) | 1988-01-07 |
US4724658A (en) | 1988-02-16 |
EP0250647B1 (en) | 1989-10-04 |
DE3621297C2 (en) | 1992-05-14 |
DE3621297A1 (en) | 1988-01-14 |
ATE46886T1 (en) | 1989-10-15 |
ES2011447T5 (en) | 1995-08-16 |
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