EP0980831B1 - Method and apparatus for removing wrappings from articles - Google Patents

Method and apparatus for removing wrappings from articles Download PDF

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Publication number
EP0980831B1
EP0980831B1 EP99116018A EP99116018A EP0980831B1 EP 0980831 B1 EP0980831 B1 EP 0980831B1 EP 99116018 A EP99116018 A EP 99116018A EP 99116018 A EP99116018 A EP 99116018A EP 0980831 B1 EP0980831 B1 EP 0980831B1
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EP
European Patent Office
Prior art keywords
wrapping
article
cut
suction
sleeve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP99116018A
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German (de)
French (fr)
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EP0980831A1 (en
Inventor
Ernst Bosshard
Erwin Ochsner
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.)
SINOMEC AG
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SINOMEC AG
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Publication date
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Publication of EP0980831A1 publication Critical patent/EP0980831A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B69/00Unpacking of articles or materials, not otherwise provided for
    • B65B69/0033Unpacking of articles or materials, not otherwise provided for by cutting

Definitions

  • the invention relates to a method and a device for removing envelopes from objects.
  • a disadvantage of this known method or the device is, for example, in it see that when opening or cutting open the case, the object through the knife can be injured. This means that the item will lose its new value can and thus becomes unusable. A similar risk of injury comes from the grippers off, at least temporarily or partially when removing the cover over the object could slide and scratch it, for example. This makes this device and This process is primarily used to reveal items declared unusable unless the object has a shape in which the envelope is not everywhere on the object rests. Then the knife has to work in this area.
  • EP 0 706 946 which is considered to be the closest prior art, discloses a method and a device for severing each a blank stack surrounding bands and known for their elimination. There grips a knife to cut the banderole between the upper blanks of the blank stack and also enters a section between the blanks. Subsequently one cross bar of the banderole is lifted by a suction device and by another The rest of the banderole is removed from the suction elements.
  • a disadvantage of this method and This device can be seen in the fact that it was only held together by the banderole, Have the stacked elements removed from the band. It must be between the There are at least small voids in individual stacked elements or blanks or be generated.
  • the The sleeve can also be ejected with the help of compressed air.
  • the advantages achieved by the invention can be seen in particular in that the removal covers, foils, etc. can be made from the objects without damaging them.
  • the strength of such foils can vary widely without being essential Adjustments to the device are necessary.
  • By making the shell with a cut is cut open in an area that is at a (albeit very small) distance the object always remains on a corresponding surface of the object undamaged, because the knife sticks out of the sheath, always only into space. Because the cut only affects a part of the length or the circumference of the object and so only a relative required short movement, the process can be carried out very quickly without being very long-stroke rapid movements of parts of the device are necessary.
  • FIG. 1 shows an object 1 with a shrink-wrapped, for example transparent, cover 2.
  • An arrow 3 gives on the one hand a path or direction for the movement of a knife and on the other hand an intersection.
  • An arrow 4 indicates in which direction the shell 2 in one Areas 5 is lifted off.
  • a line 6 shows the lifted casing 2 in the areas 5. The line 6 is crossed by arrow 3, which means nothing other than a cut through the lifted area 5 of the casing 2 is placed.
  • the path 3 of the knife follow the object 1 at the smallest possible distance without crossing or touching it. 2 shows the object 1 from FIG.
  • FIGS. 1 to 3 The most important steps of the method according to the invention are thus in FIGS. 1 to 3 recognizable, because from Fig. 1 the lifting of the casing 2 in the area 5 and the section in the Lane 3 recognizable. From Fig. 2 it can be seen how the cut envelope 2 and the object 1 against each other in a relative movement, because the ejector 11 pushes the object 1 between the jaws 7 and 8 upwards, the, through which Cut weakened shell tears open at the top, because it adheres laterally from the strongly adhering jaws 7, 8 is held back.
  • Fig. 3 shows the now detached from the object 1 2 from the Object 1 is pushed out in the direction perpendicular to the plane of the drawing.
  • FIG. 4 shows further details of the method.
  • the hill 22 is here by two height curves 23, 24 and a cutting line 25 illustrates.
  • FIG. 5 shows how the shell 2 opens further. This happens, for example, lengthways an edge 30 of the object 1 when this is in the direction of an arrow 31 upwards moves while the sleeve 2, for example, by frictional forces, which in the direction of arrows 32 act, is withheld.
  • a comparable effect can be expected if the Item 1 in the direction of an arrow 33 straight or an arrow 34 on a curved Web is moved.
  • Fig. 6 shows a device seen from the outside with all the necessary elements for processing an object in the sense of the invention.
  • a suction element 35 a cutting element 36, an element 37 for frictionally engaging the casing the object, an ejector 38 and another suction element 39 for suctioning the empty envelope.
  • Other elements of the device are described in the description of the operation presented.
  • Fig. 7 shows a perspective view of a suction element 35, with an oval here Suction opening 40, which includes mouths 41, 42 of two suction pipes 43, 44.
  • a drive 59 is provided to bring the suction opening 40 all the way up to the object and the Also pull back suction opening 40 with suctioned film or cover or from the object take off so that the cut can be made.
  • Connections 45, 46 are also provided which can supply the drive 59 with compressed air, for example.
  • Fig. 8 shows a perspective view of an assembly that the suction element 35 and the cutting element 36 comprises.
  • a knife can be seen in particular on the cutting element 36 20, which is fixed on a carriage 56 which is driven by a lifting cylinder 52
  • Objects 1 are stacked on a guide surface 47 on the device, the stack, not shown here, being supported laterally by a further surface 48, that the objects lie nicely on top of each other.
  • a further surface 48 Between the guide surface 47 and the Another surface 48 is an adjustable in width by moving the further surface 48 Gap 49 is provided, which is dimensioned such that a single object 1 through can be moved to the right in the picture.
  • Gap 49 is provided, which is dimensioned such that a single object 1 through can be moved to the right in the picture.
  • an item 1 like here, for example, a compact disk (CD) with its case moved to a position 50 be where it now lies in the area of influence of the suction element 35 Guide 51 and a pressure device 57 for that the object 1 beautiful on the Guide surface 47 abuts.
  • CD compact disk
  • the pressure device has 57 a pressure surface 58, which acts on the object by presses it against the guide surface 47.
  • Firmly connected to the pressure device 57 and The cutting element 36 can also be displaced with the pressure surface 58, so that the knife always positioned correctly in relation to the object and the path of the knife in the preset small distance to the object.
  • the suction pipes 43, 44 By applying a vacuum the suction pipes 43, 44, the suction device 35 is activated, previously by the drive 59 was delivered so that the cover, for example a transparent film, is sucked in. Together with the suctioned film, the suction opening 40 is moved back again, the The film or casing is lifted off the object 1, as is also the case in FIG.
  • a knife 20, 26 or the cutting element 36 is now activated, by moving in the direction of arrow 27 into the lifted-off casing 2 in the area 5 punctures and creates a cut 28
  • the knife 20, 26 attached to a pneumatically or hydraulically operating lifting cylinder 52, for example and driven by it. After the cut, the suction device 35 is removed from the vacuum uncoupled again and the pressure surface 58 moved back again.
  • the object 1 according to FIG. 6 along the guide surface 47 further shifted to the right, which is done via a shifting device, so that it gets between plates of element 37 for frictionally engaging the casing, of which only one plate 53 is visible here.
  • An opposite plate can, for example be formed by the guide surface 47 at this point.
  • the plate 53 by a hydraulic or pneumatic drive 54, against the guide surface 47 out, be adjustable and reset. In this position and with the plate 53 delivered, which also 2 with the jaws corresponding to the plates 7, 8, the ejector begins 11 its work, for which it is moved by a drive 55. After the stroke and possible return stroke of the ejector 11 (FIG.
  • the jaws 7, 8 are the object 1 removed or just moved back the plate 53 by the drive 54 Since the transparent film or Sheath 2 now, as shown in FIG. 5, opens sufficiently along edge 30 and as a result static charge due to the friction against the plate 53, the object 1 moved further to the right by a displacement device 60 and thus out of the Be ejected. The empty envelope is subsequently replaced by the further suction element 39 aspirated.
  • the article 1 can have a wide variety of shapes, different from that shown Shape can also vary significantly. However, it preferably points at least two to one another opposing surfaces that are seen at least in one direction continuously run, i.e. are not jagged. It is also clear that the different elements and Drives by a control, not shown here, in the sense of the method mentioned be coordinated.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Manipulator (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Abstract

The sleeve is lifted off an object in a certain area, this part of the sleeve is cut, and cut sleeve and object are subjected to a relative movement, so that the sleeve is removed. The object is pushed out of the sleeve, and the sleeve is removed by suction. The device to carry out the process has a suction element (35), a cutter (36), an element (37) to hold the sleeve on the object, an ejector (38), and a further suction element (39) to remove the empty sleeve. The holder element consists of two relatively moveable jaws, with high friction surfaces.

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Entfernen von Hüllen an Gegenständen.The invention relates to a method and a device for removing envelopes from objects.

Aus der US 4,050,223 ist ein solches Verfahren und eine Vorrichtung bekannt wobei für den betreffenden Gegenstand ein Hubtisch vorgesehen ist, auf den dieser Gegenstand gelegt wird. Um die Hülle zu öffnen ist ein Messer vorgesehen, das auf eine Kante des Gegenstandes angesetzt wird. Durch Drehen des Hubtisches mit dem Gegenstand wird die Hülle längs der Kante geöffnet, so dass sich die Hülle nun in einen Deckel und einen behälterartigen Teil trennt, wobei dieser durch Greifer vom Gegenstand abgezogen wird, wenn gleichzeitig der Hubtisch angehoben wird.Such a method and a device is known from US Pat. No. 4,050,223 a lift table on which this object is placed is provided becomes. To open the case, a knife is provided, which is on an edge of the object is scheduled. By turning the lifting table with the object, the envelope becomes opened along the edge, so that the shell now turns into a lid and a container-like one Part separates, which is removed from the object by gripper when the Lifting table is raised.

Ein Nachteil dieses bekannten Verfahrens oder der Vorrichtung ist beispielsweise darin zu sehen, dass beim Öffnen oder Aufschneiden der Hülle, der Gegenstand durch das Messer verletzt werden kann. Das bedeutet, dass der Gegenstand seinen Neuwert dabei verlieren kann und damit unbrauchbar wird. Eine ähnliche Verletzungsgefahr geht von den Greifern aus, die mindestens zeitweise oder teilweise beim Abziehen der Hülle über den Gegenstand gleiten und diesen beispielsweise zerkratzen könnten. Damit eignet sich diese Vorrichtung und dieses Verfahren vorwiegend für die Enthüllung als unbrauchbar deklarierter Gegenstände, es sei denn, der Gegenstand weise eine Form auf, bei der die Hülle nicht überall auf dem Gegenstand aufliegt. Dann muss das Messer in diesem Bereiche arbeiten.A disadvantage of this known method or the device is, for example, in it see that when opening or cutting open the case, the object through the knife can be injured. This means that the item will lose its new value can and thus becomes unusable. A similar risk of injury comes from the grippers off, at least temporarily or partially when removing the cover over the object could slide and scratch it, for example. This makes this device and This process is primarily used to reveal items declared unusable unless the object has a shape in which the envelope is not everywhere on the object rests. Then the knife has to work in this area.

Aus der EP 0 706 946, die als nöchstliegender stand der Technik augesehen wird, ist ein Verfahren und eine Vorrichtung zum Durchtrennen von jeweils einen Zuschnitt-Stapel umgebenden Banderolen und zu deren Beseitigung bekannt. Dabei greift ein Messer zum Aufschneiden der Banderole zwischen oberen Zuschnitten des Zuschnitt-Stapels ein und tritt dabei auch in einen Teilbereich zwischen die Zuschnitte ein. Anschliessend wird ein Quersteg der Banderole durch einen Sauger angehoben und durch weitere Saugorgane wird der Rest der Banderole abgezogen. Ein Nachteil dieses Verfahrens und dieser Vorrichtung ist darin zu sehen, dass sich damit nur durch die Banderole zusammengehaltene, gestapelte Elemente von der Banderole befreien lassen. Dabei müssen zwischen den einzelnen gestapelten Elementen oder Zuschnitten mindestens kleine Hohlräume vorhanden oder erzeugbar sein. Somit können damit keine Banderolen ab einzelnen glattflächigen Körpern entfernt und auch keine allseitig umfassenden Hüllen davon abgezogen werden, da bei solchen Körpern das Messer nicht ansetzen kann. Die Erfindung, wie sie in den Ansprüchen gekennzeichnet ist, löst demnach die Aufgabe, ein Verfahren und eine Vorrichtung zu schaffen, die schonendes Entfemen der Hülle vom Gegenstand auch dann ermöglicht, wenn der Gegenstand eine einfache Form aufweist, eine glatte Oberfläche hat und die Hülle allseitig darauf aufliegtEP 0 706 946, which is considered to be the closest prior art, discloses a method and a device for severing each a blank stack surrounding bands and known for their elimination. there grips a knife to cut the banderole between the upper blanks of the blank stack and also enters a section between the blanks. Subsequently one cross bar of the banderole is lifted by a suction device and by another The rest of the banderole is removed from the suction elements. A disadvantage of this method and This device can be seen in the fact that it was only held together by the banderole, Have the stacked elements removed from the band. It must be between the There are at least small voids in individual stacked elements or blanks or be generated. This means that no banderoles from individual smooth surfaces can be used removed and no envelopes encompassing all sides are removed from it, since at the knife cannot attach to such bodies. The invention, as characterized in the claims, therefore solves the problem Methods and a device to create the gentle removal of the shell from the object even if the object has a simple shape, a has a smooth surface and the cover rests on all sides

Diese Aufgabe wird durch die Meckmale der Ansprüche 1 und 5 gelöst. Vorzugsweise kann die Hülle auch mit Unterstützung durch Druckluft zusätzlich ausgestossen werden. This object is achieved by the features of claims 1 and 5. Preferably, the The sleeve can also be ejected with the help of compressed air.

Die durch die Erfindung erreichten Vorteile sind insbesondere darin zu sehen, dass die Entfernung von Hüllen, Folien usw. von den Gegenständen erfolgen kann, ohne diese zu beschädigen. Dabei kann die Festigkeit solcher Folien sehr unterschiedlich sein, ohne dass wesentliche Anpassungen an der Vorrichtung notwendig sind. Dadurch, dass die Hülle mit einem Schnitt aufgeschnitten wird, der in einer Fläche erfolgt, die in einem (wenn auch sehr geringen) Abstand zu einer entsprechenden Fläche des Gegenstandes liegt, bleibt der Gegenstand immer unverletzt, denn das Messer sticht ausser in die Hülle, immer nur ins Leere. Da der Schnitt nur einen Teil der Länge oder des Umfanges des Gegenstandes betrifft und so nur eine relativ kurze Bewegung benötigt, ist das Verfahren sehr schnell durchführbar, ohne dass sehr langhubige schnelle Bewegungen von Teilen der Vorrichtung notwendig sind.The advantages achieved by the invention can be seen in particular in that the removal covers, foils, etc. can be made from the objects without damaging them. The strength of such foils can vary widely without being essential Adjustments to the device are necessary. By making the shell with a cut is cut open in an area that is at a (albeit very small) distance the object always remains on a corresponding surface of the object undamaged, because the knife sticks out of the sheath, always only into space. Because the cut only affects a part of the length or the circumference of the object and so only a relative required short movement, the process can be carried out very quickly without being very long-stroke rapid movements of parts of the device are necessary.

Im folgenden wird die Erfindung anhand eines Beispiels und mit Bezug auf die beiliegenden Figuren näher erläutert. Es zeigen:

  • Figur 1, 2 und 3 eine schematische Darstellung einiger Schritte des Verfahrens und der verwendeten Mittel,
  • Figur 4 und 5 je eine weitere Darstellung von Verfahrensschritten
  • Figur 6 eine perspektivische Darstellung einer erfindungsgemässen Vorrichtung und
  • Figur 7 und 8 je eine Darstellung eines Teils dieser Vorrichtung.
  • The invention is explained in more detail below using an example and with reference to the accompanying figures. Show it:
  • 1, 2 and 3 show a schematic representation of some steps of the method and the means used,
  • Figures 4 and 5 each another representation of process steps
  • Figure 6 is a perspective view of an inventive device and
  • Figures 7 and 8 each show a part of this device.
  • Fig. 1 zeigt einen Gegenstand 1 mit aufgeschrumpfter, beispielsweise durchsichtiger Hülle 2. Ein Pfeil 3 gibt einerseits eine Bahn oder Richtung für die Bewegung eines Messers und andererseits eine Schnittfläche an. Ein Pfeil 4 deutet an, in welcher Richtung die Hülle 2 in einem Bereiche 5 abgehoben wird. Eine Linie 6 zeigt die abgehobene Hülle 2 im Bereiche 5. Die Linie 6 wird durch den Pfeil 3 gekreuzt, was nichts anderes bedeutet, als dass ein Schnitt durch den abgehobenen Bereich 5 der Hülle 2 gelegt ist. Vorzugsweise soll die Bahn 3 des Messers in möglichst kleinem Abstand dem Gegenstand 1 folgen, ohne diesen zu kreuzen oder berühren. Fig. 2 zeigt den Gegenstand 1 aus Fig. 1 zwischen zwei Backen 7 und 8 oder Platten eingeklemmt, die in Richtung von Pfeilen 9 und 10 auf den Gegenstand 1 hin zugestellt werden können, und die in Richtung eben dieser Pfeile eine Kraft auf den Gegenstand 1 ausüben. Zudem erkennt man einen Ausstosser 11, der in Richtung eines Pfeiles 12 im Sinne einer Relativbewegung auf den Gegenstand 1 einwirkt und diesen so weit bewegt, dass er eine Stellung 13 einnimmt, wie sie durch unterbrochene Linien 14 und 15 dargestellt ist. Die Backen 7 und 8 bilden zusammen ein Element zum reibschlüssigen Erfassen des Gegenstandes 1, denn sie sind mit einer Oberfläche 16,17 versehen, die einen hohen Reibwert aufweist1 shows an object 1 with a shrink-wrapped, for example transparent, cover 2. An arrow 3 gives on the one hand a path or direction for the movement of a knife and on the other hand an intersection. An arrow 4 indicates in which direction the shell 2 in one Areas 5 is lifted off. A line 6 shows the lifted casing 2 in the areas 5. The line 6 is crossed by arrow 3, which means nothing other than a cut through the lifted area 5 of the casing 2 is placed. Preferably, the path 3 of the knife Follow the object 1 at the smallest possible distance without crossing or touching it. 2 shows the object 1 from FIG. 1 clamped between two jaws 7 and 8 or plates, which are delivered towards the object 1 in the direction of arrows 9 and 10 can, and in the direction of these arrows exert a force on the object 1. In addition, one can see an ejector 11 which is in the direction of an arrow 12 in the sense of a relative movement acts on the object 1 and moves it so far that it has a position 13 occupies, as shown by broken lines 14 and 15. The cheeks 7 and 8 together form an element for frictionally engaging the object 1, because they are provided with a surface 16, 17 which has a high coefficient of friction

    Fig. 3 zeigt den Gegenstand 1 in seiner Stellung 13, wobei anschliessend die Backen 7 und 8 in Richtung von Pfeilen 18 und 19 vom Gegenstand 1 entfernt wurden. Man erkennt hier, wie die oben offene Hülle 2 sich beispielsweise infolge statischer Aufladung vom Gegenstand seitlich entfernt hat und an den Backen 7 und 8 anliegt3 shows the object 1 in its position 13, with the jaws 7 and 8 subsequently have been removed from object 1 in the direction of arrows 18 and 19. You can see how the cover 2 open at the top, for example as a result of static charge from the object has removed and abuts the jaws 7 and 8

    Damit sind die wichtigsten Schritte des erfindungsgemässen Verfahrens in den Figuren 1 bis 3 erkennbar, denn aus Fig. 1 ist das Abheben der Hülle 2 im Bereich 5 und der Schnitt in der Bahn 3 erkennbar. Aus Fig. 2 ist erkennbar wie die aufgeschnittene Hülle 2 und der Gegenstand 1 gegeneinander in eine Relativbewegung versetzt werden, denn der Ausstosser 11 drückt den Gegenstand 1 zwischen den Backen 7 und 8 nach oben, wobei die, durch den Schnitt geschwächte Hülle oben aufreisst, weil sie von den stark haftenden Backen 7, 8 seitlich zurückgehalten wird. Fig. 3 zeigt die nun vom Gegenstand 1 gelöste Hülle 2 aus der der Gegenstand 1 in Richtung senkrecht zur Zeichnungsebene ausgeschoben wird.The most important steps of the method according to the invention are thus in FIGS. 1 to 3 recognizable, because from Fig. 1 the lifting of the casing 2 in the area 5 and the section in the Lane 3 recognizable. From Fig. 2 it can be seen how the cut envelope 2 and the object 1 against each other in a relative movement, because the ejector 11 pushes the object 1 between the jaws 7 and 8 upwards, the, through which Cut weakened shell tears open at the top, because it adheres laterally from the strongly adhering jaws 7, 8 is held back. Fig. 3 shows the now detached from the object 1 2 from the Object 1 is pushed out in the direction perpendicular to the plane of the drawing.

    In Fig. 4 sind weitere Einzelheiten des Verfahrens zu erkennen. Beispielsweise erkennt man, wie die Hülle 2 sich im Bereiche 5 durch eine in Richtung eines Pfeiles 21 wirkende Saugwirkung abhebt und einen Hügel 22 bildet, der eine Form aufweist, die von der Querschnittsform eines angesetzten Saugelementes abhängt Ist dessen Querschnitt rund, so ist der Hügel 22 auch annähernd rund. Der Hügel 22 ist hier durch zwei Höhenkurven 23, 24 und eine Schnittlinie 25 veranschaulicht. Man erkennt femer ein in Richtung eines Pfeiles 27 in einer Bahn 3 bewegbares Messer 26, das einen Schnitt 28 in der Hülle 2 erzeugen kann. Für diesen Schnitt 28 bewegt sich das Messer 26 parallel und in sehr geringem Abstand zur Fläche 29 des Gegenstandes 1.4 shows further details of the method. For example, you can see like the sheath 2 in the area 5 by a suction effect acting in the direction of an arrow 21 lifts off and forms a hill 22 that has a shape that is different from the cross-sectional shape of an attached suction element If the cross section is round, the hill 22 also roughly round. The hill 22 is here by two height curves 23, 24 and a cutting line 25 illustrates. One can also see one in the direction of an arrow 27 in a path 3 movable knife 26, which can produce a cut 28 in the sheath 2. For this cut 28, the knife 26 moves parallel and at a very short distance from the surface 29 of the object 1.

    In Fig. 5 ist erkennbar, wie sich die Hülle 2 weiter öffnet. Dies geschieht beispielsweise längs einer Kante 30 des Gegenstandes 1, wenn dieser sich in Richtung eines Pfeiles 31 nach oben bewegt, während die Hülle 2 beispielsweise durch Reibkräfte, welche in Richtung von Pfeilen 32 wirken, zurückgehalten wird. Eine vergleichbare Wirkung kann erwartet werden, wenn der Gegenstand 1 in Richtung eines Pfeiles 33 geradlinig oder eines Pfeiles 34 auf gekrümmter Bahn bewegt wird.5 shows how the shell 2 opens further. This happens, for example, lengthways an edge 30 of the object 1 when this is in the direction of an arrow 31 upwards moves while the sleeve 2, for example, by frictional forces, which in the direction of arrows 32 act, is withheld. A comparable effect can be expected if the Item 1 in the direction of an arrow 33 straight or an arrow 34 on a curved Web is moved.

    Fig. 6 zeigt eine Vorrichtung von aussen gesehen mit allen notwendigen Elementen zur Verarbeitung eines Gegenstandes im Sinne der Erfindung. Insbesondere erkennt man ein Saugelement 35, ein Schneidelement 36, ein Element 37 zum reibschlüssigen Erfassen der Hülle auf dem Gegenstand, einen Ausstosser 38 und ein weiteres Saugelement 39 zum Absaugen der leeren Hülle. Weitere Elemente der Vorrichtung werden bei der Beschreibung der Wirkungsweise vorgestellt.Fig. 6 shows a device seen from the outside with all the necessary elements for processing an object in the sense of the invention. In particular, one can see a suction element 35, a cutting element 36, an element 37 for frictionally engaging the casing the object, an ejector 38 and another suction element 39 for suctioning the empty envelope. Other elements of the device are described in the description of the operation presented.

    Fig. 7 zeigt eine perspektivische Darstellung eines Saugelementes 35, mit einer hier ovalen Saugöffnung 40, welche Mündungen 41, 42 zweier Saugrohre 43, 44 umfasst. Ein Antrieb 59 ist vorgesehen, um die Saugöffnung 40 ganz an den Gegenstand heran zu führen und die Saugöffnung 40 mit angesaugter Folie oder Hülle auch zurückzuziehen oder vom Gegenstand abzuheben, so dass der Schnitt gemacht werden kann. So sind auch Anschlüsse 45, 46 vorgesehen die den Antrieb 59 beispielsweise mit Druckluft versorgen können.Fig. 7 shows a perspective view of a suction element 35, with an oval here Suction opening 40, which includes mouths 41, 42 of two suction pipes 43, 44. A drive 59 is provided to bring the suction opening 40 all the way up to the object and the Also pull back suction opening 40 with suctioned film or cover or from the object take off so that the cut can be made. Connections 45, 46 are also provided which can supply the drive 59 with compressed air, for example.

    Fig. 8 zeigt eine perspektivische Darstellung einer Baugruppe, die das Saugelement 35 und das Schneidelement 36 umfasst. Am Schneidelement 36 erkennt man insbesondere ein Messer 20, das auf einem Schlitten 56 befestigt ist, der von einem Hubzylinder 52 angetrieben istFig. 8 shows a perspective view of an assembly that the suction element 35 and the cutting element 36 comprises. A knife can be seen in particular on the cutting element 36 20, which is fixed on a carriage 56 which is driven by a lifting cylinder 52

    Das erfindungsgemässe Verfahren ergibt sich wie folgt beschrieben:The method according to the invention is described as follows:

    Gegenstände 1 werden gestapelt an eine Führungsfläche 47 an der Vorrichtung angelegt, wobei der hier nicht gezeigte Stapel seitlich durch eine weitere Fläche 48 so gestützt wird, dass die Gegenstände schön aufeinanderliegen. Zwischen der Führungsfläche 47 und der weiteren Fläche 48 ist ein in seiner Breite, durch Verschieben der weiteren Fläche 48 einstellbarer Spalt 49 vorgesehen, der so bemessen ist, dass jeweils ein einziger Gegenstand 1 durch diesen hindurch im Bild nach rechts verschoben werden kann. So kann ein Gegenstand 1, wie hier beispielsweise eine Compact Disk (CD) mit seiner Hülle in eine Stellung 50 verschoben werden, wo er nun im Einflussbereich des Saugelementes 35 liegt Dort sorgt eine weitere Führung 51 sowie eine Andruckvorrichtung 57 dafür, dass der Gegenstand 1 schön an der Führungsfläche 47 anliegt. Wie insbesondere auch aus der Fig. 8 erkennbar, weist die Andruckvorrichtung 57 eine Andruckfläche 58 auf, die auf den Gegenstand einwirkt indem sie diesen gegen die Führungsfläche 47 drückt. Mit der Andruckvorrichtung 57 fest verbunden und mit der Andruckfläche 58 verschiebbar ist auch das Schneidelement 36, so dass das Messer immer richtig in bezug auf den Gegenstand positioniert wird und die Bahn des Messers im voreingestellten kleinen Abstand zum Gegenstand verläuft. Durch Anlegen eines Vakuums an die Saugrohre 43, 44, wird die Saugvorrichtung 35 aktiviert, die vorher durch den Antrieb 59 zugestellt wurde, so dass die Hülle, hier beispielsweise eine Klarsichtfolie angesaugt wird. Zusammen mit der angesaugten Folie wird die Saugöffnung 40 wieder zurückgefahren, wobei die Folie oder Hülle vom Gegenstand 1 abgehoben wird, wie dies auch aus der Fig. 1 für die Hülle 2 (welche beispielsweise der Klarsichtfolie entspricht) im Bereiche 5 hervorgeht Zusätzlich wird nun wie aus Fig. 4 erkennbar, ein Messer 20, 26 oder das Schneidelement 36 aktiviert, das durch eine Bewegung in Richtung des Pfeiles 27 in die abgehobene Hülle 2 im Bereiche 5 einsticht und einen Schnitt 28 erzeugt Wie aus der Fig. 8 erkennbar, ist das Messer 20, 26 beispielsweise an einem pneumatisch oder hydraulisch arbeitenden Hubzylinder 52 befestigt und durch diesen angetrieben. Nach erfolgtem Schnitt wird die Saugvorrichtung 35 vom Vakkuum wieder abgekoppelt und die Andruckfläche 58 wieder zurückgefahren.Objects 1 are stacked on a guide surface 47 on the device, the stack, not shown here, being supported laterally by a further surface 48, that the objects lie nicely on top of each other. Between the guide surface 47 and the Another surface 48 is an adjustable in width by moving the further surface 48 Gap 49 is provided, which is dimensioned such that a single object 1 through can be moved to the right in the picture. So an item 1 like here, for example, a compact disk (CD) with its case moved to a position 50 be where it now lies in the area of influence of the suction element 35 Guide 51 and a pressure device 57 for that the object 1 beautiful on the Guide surface 47 abuts. As can be seen in particular from FIG. 8, the pressure device has 57 a pressure surface 58, which acts on the object by presses it against the guide surface 47. Firmly connected to the pressure device 57 and The cutting element 36 can also be displaced with the pressure surface 58, so that the knife always positioned correctly in relation to the object and the path of the knife in the preset small distance to the object. By applying a vacuum the suction pipes 43, 44, the suction device 35 is activated, previously by the drive 59 was delivered so that the cover, for example a transparent film, is sucked in. Together with the suctioned film, the suction opening 40 is moved back again, the The film or casing is lifted off the object 1, as is also the case in FIG. 1 for the casing 2 (which corresponds, for example, to the transparent film) is additionally shown in areas 5 4, a knife 20, 26 or the cutting element 36 is now activated, by moving in the direction of arrow 27 into the lifted-off casing 2 in the area 5 punctures and creates a cut 28 As can be seen from FIG. 8, the knife 20, 26 attached to a pneumatically or hydraulically operating lifting cylinder 52, for example and driven by it. After the cut, the suction device 35 is removed from the vacuum uncoupled again and the pressure surface 58 moved back again.

    Für einen weiteren Schritt wird der Gegenstand 1 gemäss Fig. 6 entlang der Führungsfläche 47 weiter nach rechts verschoben, was über eine Verschiebevorrichtung erfolgt, so dass er zwischen Platten des Elementes 37 zum reibschlüssigen Erfassen der Hülle gerät, wovon hier nur eine Platte 53 sichtbar ist. Eine gegenüberliegende Platte kann beispielsweise durch die Führungsfläche 47 an dieser Stelle gebildet sein. So kann die Platte 53 beispielsweise durch einen hydraulischen oder pneumatischen Antrieb 54, gegen die Führungsfläche 47 hin, zu- und rückstellbar sein. In dieser Stellung und mit zugestellter Platte 53, was ebenfalls aus der Fig. 2 mit den Platten entsprechenden Backen 7, 8 hervorgeht, beginnt der Ausstosser 11 seine Arbeit, wozu er von einem Antrieb 55 bewegt wird. Nach erfolgtem Hub und eventuellem Rückhub des Ausstossers 11 (Fig. 2), werden die Backen 7, 8 vom Gegenstand 1 entfernt oder eben die Platte 53 durch den Antrieb 54 zurückbewegt Da die Klarsichtfolie oder Hülle 2 sich nun wie etwa in Fig. 5 gezeigt, entlang der Kante 30 genügend geöffnet und infolge statischer Aufladung wegen der Reibung an die Platte 53 anschmiegt, kann der Gegenstand 1 durch eine Verschiebevorrichtung 60 weiter nach rechts bewegt und somit aus der Hülle ausgestossen werden. Die leere Hülle wird nachfolgend durch das weitere Saugelement 39 abgesaugt.For a further step, the object 1 according to FIG. 6 along the guide surface 47 further shifted to the right, which is done via a shifting device, so that it gets between plates of element 37 for frictionally engaging the casing, of which only one plate 53 is visible here. An opposite plate can, for example be formed by the guide surface 47 at this point. For example, the plate 53 by a hydraulic or pneumatic drive 54, against the guide surface 47 out, be adjustable and reset. In this position and with the plate 53 delivered, which also 2 with the jaws corresponding to the plates 7, 8, the ejector begins 11 its work, for which it is moved by a drive 55. After the stroke and possible return stroke of the ejector 11 (FIG. 2), the jaws 7, 8 are the object 1 removed or just moved back the plate 53 by the drive 54 Since the transparent film or Sheath 2 now, as shown in FIG. 5, opens sufficiently along edge 30 and as a result static charge due to the friction against the plate 53, the object 1 moved further to the right by a displacement device 60 and thus out of the Be ejected. The empty envelope is subsequently replaced by the further suction element 39 aspirated.

    Es ist klar, dass der Gegenstand 1 verschiedenste Formen aufweisen kann, die von der gezeigten Form auch stark abweichen können. Vorzugsweise weist er aber mindestens zwei einander gegenüberliegende Flächen auf, die mindestens in einer Richtung gesehen kontinuierlich verlaufen, d.h. nicht zerklüftet sind. Ebenso klar ist, dass die verschiedenen Elemente und Antriebe durch eine hier nicht näher dargestellte Steuerung im Sinne des genannten Verfahrens koordiniert werden.It is clear that the article 1 can have a wide variety of shapes, different from that shown Shape can also vary significantly. However, it preferably points at least two to one another opposing surfaces that are seen at least in one direction continuously run, i.e. are not jagged. It is also clear that the different elements and Drives by a control, not shown here, in the sense of the method mentioned be coordinated.

    Claims (9)

    1. Method for removing wrappings (2) from articles (1), characterised in that the wrapping is lifted from the article in a region (5), the wrapping is cut in the lifted region, the cut wrapping is grasped with friction grip and the article and the wrapping are exposed to a relative movement (12) against each other, the wrapping weakened by the cut tearing and the wrapping detaching from the article.
    2. Method according to claim 1, characterised in that the article is pushed out of the wrapping removed from the article and the wrapping is removed by suction.
    3. Method according to claim 1, characterised in that the wrapping is cut in the region in a path (3) which runs parallel to the article in the region.
    4. Method according to claim 1, characterised in that the wrapping is lifted from the article by suction.
    5. Device for carrying out the method according to claim 1 comprising a suction element (35) for lifting the wrapping from the article in a region (5) for a cut (28) and a cutting element (36) for making a cut in the region (5) in the wrapping (2), characterised by an element (37) for grasping with friction grip the cut wrapping on the article and an ejector (38).
    6. Device according to claim 5, characterised in that a further suction element (39) is provided for removing the empty wrapping by suction.
    7. Device according to claim 5, characterised in that a path (3) extending parallel and at a slight distance from a face (29) of the article (1) is provided for the cutting element.
    8. Device according to claim 5, characterised in that the element (37) consists of two jaws (7, 8) which can be moved towards the article and have a surface (16, 17) with a high coefficient of friction.
    9. Device according to claim 8, characterised in that an ejector (11) is provided between the jaws.
    EP99116018A 1998-08-20 1999-08-14 Method and apparatus for removing wrappings from articles Expired - Lifetime EP0980831B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    CH171698 1998-08-20
    CH171698 1998-08-20

    Publications (2)

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    EP0980831A1 EP0980831A1 (en) 2000-02-23
    EP0980831B1 true EP0980831B1 (en) 2003-05-28

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    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP99116018A Expired - Lifetime EP0980831B1 (en) 1998-08-20 1999-08-14 Method and apparatus for removing wrappings from articles

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    EP (1) EP0980831B1 (en)
    AT (1) ATE241505T1 (en)
    DE (1) DE59905720D1 (en)

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP3822183B1 (en) * 2019-11-13 2023-01-04 Google LLC Automated hard drive static-shielding bag opening and removal

    Families Citing this family (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102007027878A1 (en) * 2007-06-18 2008-12-24 Robert Bosch Gmbh Apparatus and method for removing a sterile article from a sterile package
    DE102009027600A1 (en) * 2009-07-10 2011-01-13 Robert Bosch Gmbh Apparatus and method for opening a package

    Family Cites Families (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US4050223A (en) 1975-06-04 1977-09-27 Automation Steeg And Hoffmeyer Gmbh Device for unpacking bottles or similar articles in a shrink foil package
    DE3822837A1 (en) * 1988-07-06 1990-01-11 Pavel Wilfried Maschinen Process and apparatus for the unpacking of garments packaged in a closed foil wrapping
    US5190430A (en) * 1989-08-01 1993-03-02 G. D. S.P.A. Apparatus for feeding packaging machines with stacks of sheet material
    DE4436330A1 (en) * 1994-10-11 1996-04-18 Focke & Co Method and device for handling stacked blanks with banderoles

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP3822183B1 (en) * 2019-11-13 2023-01-04 Google LLC Automated hard drive static-shielding bag opening and removal

    Also Published As

    Publication number Publication date
    EP0980831A1 (en) 2000-02-23
    ATE241505T1 (en) 2003-06-15
    DE59905720D1 (en) 2003-07-03

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