EP0437760B1 - Dispositif pour séparer des couches (intermédiaires) d'une pile de produits empilés - Google Patents

Dispositif pour séparer des couches (intermédiaires) d'une pile de produits empilés Download PDF

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Publication number
EP0437760B1
EP0437760B1 EP90124401A EP90124401A EP0437760B1 EP 0437760 B1 EP0437760 B1 EP 0437760B1 EP 90124401 A EP90124401 A EP 90124401A EP 90124401 A EP90124401 A EP 90124401A EP 0437760 B1 EP0437760 B1 EP 0437760B1
Authority
EP
European Patent Office
Prior art keywords
suction lifter
suction
intermediate layer
holding
blank
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90124401A
Other languages
German (de)
English (en)
Other versions
EP0437760A2 (fr
EP0437760A3 (en
Inventor
Heinz Focke
Kurt Liedtke
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.)
Focke and Co GmbH and Co KG
Original Assignee
Focke and Co GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Focke and Co GmbH and Co KG filed Critical Focke and Co GmbH and Co KG
Publication of EP0437760A2 publication Critical patent/EP0437760A2/fr
Publication of EP0437760A3 publication Critical patent/EP0437760A3/de
Application granted granted Critical
Publication of EP0437760B1 publication Critical patent/EP0437760B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/08—Separating articles from piles using pneumatic force
    • B65H3/0808—Suction grippers
    • B65H3/0816—Suction grippers separating from the top of pile
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S414/00—Material or article handling
    • Y10S414/10—Associated with forming or dispersing groups of intersupporting articles, e.g. stacking patterns
    • Y10S414/108—Associated with forming or dispersing groups of intersupporting articles, e.g. stacking patterns including means for collecting emptied pallet or separator

Definitions

  • the invention relates to a device for lifting sheet-like objects, in particular sheet-shaped (intermediate) layers from a base, for. B. of (cutting) stacks of a pallet or the like, by means of suction lifter, which can be placed with suction holes on the top of the (intermediate) layer.
  • a thin intermediate layer or a sheet-shaped intermediate layer being arranged between the individual layers.
  • This can consist of cardboard, in particular corrugated cardboard, but also of plastic.
  • the stacked layers can be individual objects arranged side by side in each layer, but also (small) stacks of sheet-like objects.
  • An important example is the arrangement of prefabricated blanks from thin cardboard for the production of packs, in particular (cigarette) hinged boxes.
  • the specially designed blanks are in stacks of z. B. summarized a thousand blanks and placed side by side as a stacked layer on a pallet for transport and storage.
  • the already mentioned intermediate layers made of cardboard or the like are located between a plurality of stack layers formed one above the other.
  • a device which is equipped with two suction lifters for gripping the intermediate layers and the tops of relatively difficult and one-piece stacked objects.
  • the object of the invention is to further mechanize and simplify the unloading of pallets or the like, but in particular the objects of the stacked layer when an intermediate layer is lifted off secure against displacement.
  • the device according to the invention is characterized in that the suction lifter (suction plate) has support members (hold-down devices) which pass through openings (recesses) in the intermediate layer when the suction lifter is placed on the intermediate layer and adhere to the layer underneath during the lifting of the intermediate layer support lying objects (blank stack).
  • the objects of the stack layer in particular a plurality of stacked blanks arranged next to one another, are mechanically secured against displacement during the initial phase of lifting an intermediate layer.
  • Hold-down devices are provided for this purpose, which are supported with a certain pressure on the objects or stacks of blanks and thereby fix them, while at the same time the intermediate layer is lifted from the stack position by the suction lifter moving upward.
  • the intermediate layer is designed in a special way, namely provided with openings which allow the hold-down devices to pass through to the object (stack of blanks).
  • the suction lifter can be designed such that a number of suction lifters corresponding to the number of objects is provided on the underside.
  • the suction lifters can also be designed, dimensioned and arranged in such a way that, when the suction lifter is lowered, each hold-down device detects several objects or stacks of blanks on the upper side and fixes them by pressure transmission.
  • hold-downs with circular stamp plates on pressure rams can each be in the area of the meeting corners of a plurality of blank stacks, e.g. B. of four adjacent blank stacks.
  • the hold-down devices are movably mounted on the suction lifter, namely movable up and down.
  • the hold-down devices are still spring-loaded in the direction of the extended position. It is thereby achieved that during the initial phase of the upward movement of the suction lifter - with the intermediate layer being carried - the hold-down devices remain in the holding position under contact with the objects. When the suction lifter continues to move, the extended hold-down devices are also lifted.
  • the invention is also concerned with securing the objects of a stack in the transverse direction. This applies in particular to the mentioned stack of blanks for (cigarette) folding boxes. These cuts have a special, characteristic geometric shape. Because of the same, specially formed, namely angular or V-shaped cavities arise between adjacent blank stacks. In order to ensure the exact stack formation of the blank stacks, guide or support members of the suction lifter enter the cavities mentioned, namely elongated profile pieces which are adapted in cross section to that of the cavities.
  • the profile pieces are arranged on the underside of the hold-down devices and are therefore threaded into the cavities between the intermediate stacks when the suction lifter is lowered.
  • the dimension of the profile pieces is such that when the suction lifter is lowered, the profile pieces extend over the full height of a blank stack or enter the recess of an intermediate layer underneath with one end. As a result, the blank stacks are aligned or supported over the entire height.
  • each stack layer 11 consists of a plurality of stacked blanks 12 of the same type aligned in longitudinal rows and transverse rows Size and shape.
  • the intermediate layer 13 After clearing a stack layer 11, the intermediate layer 13 must be removed so that the stack layer 11 underneath can also be cleared.
  • a suction lifter 16 is used for automatically removing the intermediate layers 13. This consists of a suction plate 17, approximately the size of the pallet or an intermediate layer 13. The suction plate 17 is lowered onto the intermediate layer 13 in order to lift it off. The intermediate layer 13 is fixed on the underside of the suction plate 17 via suction bores 18 in the suction plate 17 and can be removed with the latter.
  • the suction plate 17 is designed as a hollow body with a continuous vacuum chamber 19.
  • the suction bores 18 are formed in a lower plate wall 20, specifically in a distribution sufficient to cover the intermediate layer 13.
  • the suction plate 17 or the vacuum chamber 19 is connected via a suction line 21 to a vacuum source (not shown).
  • support members or hold-down devices 22 are arranged on the suction plate 17. These are lowered onto the intermediate layer 13 with the suction plate 17.
  • the intermediate layer 13 is provided in the area of the hold-down device 22 with openings or recesses 23. These are arranged and dimensioned so that the hold-down 22 without constraint through the recesses 23 can pass through and thereby come to rest on the top of the blank stack 12.
  • the hold-down devices 22 are designed as pressure stamps with a circular stamp plate 24 in the present case, which passes through the recess 23 and receives contact with the top of the blank stack 12.
  • the stamp plate 24 is arranged on a pressure tappet 25 which is mounted in the suction plate 17 such that it can be moved, namely moved up and down.
  • the suction plate 17 is provided with a plurality of tappet housings 26. These are inserted into the suction plate 17 like cylinders.
  • the pressure tappet 25 is slidably mounted within the tappet housing 26 and secured against sliding out by a collar 27 at the free end of the pressure tappet 25.
  • the pressure ram 25 is also guided in a passage opening 28 of the plate wall 20.
  • the hold-down devices 22 are constantly or at least when the suction plate 17 is lowered onto the intermediate layer 13 in the direction of the extended position (FIG. 2, FIG. 4), namely by a compression spring 29. This is supported and supported within the tappet housing 26 on the free end of the pressure ram 25 (on the collar 27).
  • the suction lifter 16 with the suction plate 11 is lowered onto the intermediate layer 13 when the hold-down devices 22 are extended, namely until the plate wall 20 abuts the intermediate layer 13.
  • the pressure tappets 25 are pressed together by compressing the compression spring 29 moved into the plunger housing 26 until the stamp plate 24 rests on the underside of the plate wall 20.
  • the stamp plate 24 lies within the significantly larger recess 23.
  • the thickness of the stamp plate 24 corresponds in this case to the thickness of the intermediate layer 13.
  • the hold-down devices 22 protruding through the recess 23 remain in the system on the blank stacks 12 and fix them.
  • the plungers 25 increasingly move out of the plunger housing 26 until the collar 27 abuts the plunger housing 26 in the area of the passage opening 28.
  • the hold-down devices 22 are now also carried along during the further stroke movement. Their function is now fulfilled, since the intermediate layer 13 is free of the blank stacks 12 underneath.
  • the hold-down device 22 can be arranged such that a separate hold-down device is assigned to each blank stack 12 of the stacked layer 11.
  • a hold-down device 22 is arranged in the joint area of four blank stacks 12, that is, where the corners of four blank stacks meet.
  • each blank stack 12 is gripped by a hold-down device 22 at all four corners.
  • the recesses 23 are arranged in the intermediate layer 13.
  • guide members are arranged on the suction lifter 16, namely upright profile pieces 31. These are of angular or V-shaped cross-section. In the present exemplary embodiment, such a profile piece 31 is arranged on the underside of each hold-down device 22.
  • the profile pieces 31 positively enter into cavities 32 which are formed between adjacent blank stacks 12.
  • the cavities 32 also have a V-shaped cross section, so that the profile pieces 31 enter these cavities 32 in a suitable and thereby stabilizing manner for the exact alignment of the blank stacks 12.
  • the special shape of the cavities 32 is given in the present case by the shape of the blanks 30 from which the blank stacks 12 are formed. These are blanks 30 for folding boxes for holding cigarettes. Typical of the design of such blanks 30 is the formation of a trapezoidal depression 33 at one end of the blank 30.
  • the depression 33 results from the side tab 34 with triangular end regions or with triangular gussets 35 over a front wall 36 of the package to be formed from the blank 30 stick out.
  • a lid On the opposite side of the blank 30 there are parts for the formation of a lid, namely a protruding inner flap 37 of the lid, which has a significantly smaller width than the blank in the rest. Furthermore, trapezoidal cover side tabs 38 with obliquely directed shoulders 39 are located in this area.
  • the profile pieces 31 are dimensioned such that they capture the full height of the cavity 32 when the suction lifter 16 is lowered or when the suction plate 17 rests on the intermediate layer 13 or protrude slightly into the recess 23 of an intermediate layer 13 (FIG. 4). When lifting the suction plate 12, the profile pieces 31 are pulled out of the cavities 32 again.
  • the suction lifter 16 formed in the manner described can be arranged on a suitable device for carrying out the lifting and further conveying movements, for. B. on a cantilever arm of a palletizer.
  • a linear movement of the suction lifter 16 is provided above the pallet 10 or the stack layers 11.
  • a support frame 40 is provided from upright supports 41 and a support frame 42 arranged at the upper ends thereof and extending in the horizontal plane.
  • the support frame designed in this way has a rectangular plan.
  • Cross members 43, 44 of the support frame 42 are connected to one another by guide rails 45, 46. These are arranged laterally and parallel to longitudinal spars 47, 48.
  • a cross member 49 with sliders 50, 51 is displaceable at the ends.
  • the cross member 49 is moved here by a cable drive, which consists of a pull cable 52 with the ends attached to the cross member 49. This runs over a drive roller 53 on one cross-member 43 and over a deflection roller 54 on the opposite cross-member 44.
  • the drive roller 53 is driven by a motor 55, alternatively in one or the other direction of rotation, so that the cross member 49 correspondingly and can move.
  • the suction lifter 16 is attached to the cross member 49.
  • two support rods 56, 57 are attached to the top of the suction plate 17. These pass through the cross member 49 and are each held in a bearing sleeve 58 for performing sliding movements.
  • the suction lifter 16 is moved back and forth in the raised position between a depositing position (FIG. 2) and a receiving position.
  • a depositing position FIG. 2
  • a receiving position the suction lifter 16 is located above an empty pallet 60 on which the intermediate layers 13 are placed.
  • the suction lifter 16 is located above the pallet 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • De-Stacking Of Articles (AREA)

Claims (12)

  1. Dispositif pour soulever d'un support, par exemple de piles (de flans) (12) d'une palette ou analogues des objets planiformes, en particulier des couches (intermédiaires) (13) lamelliformes , au moyen d'un élévateur à aspiration (16), pouvant être appliqué, avec des perçages d'aspiration, à la surface des couches (intermédiaires) (13), caractérisé en ce que l'élévateur à aspiration (16) présente des organes d'appuis (serre-flan 22) qui, lors de l'application de l'élévateur à aspiration (16) sur la couche (intermédiaire) (13) passent par des ouvertures (évidements 23) ménagées dans la couche (intermédiaire) (13), et qui, pendant le soulèvement de la couche (intermédiaire) (13) par l'élévateur à aspiration (16) prennent appui sur des objets (piles de flans 12) se trouvant en dessous.
  2. Dispositif selon la revendication 1, caractérisé en ce que la couche intermédiaire (13) présente des évidements (23) répartis en quadrillage, de taille nettement plus grande que la partie du serre-flan (22) passant par l'évidement (23).
  3. Dispositif selon la revendications 1 ou 2, caractérisé en ce que les serre-flan (22) sont disposés mobiles (vers le haut ou le bas) sur l'élévateur à aspiration (16) et sollicités de manière que les serre-flan (22) s'appuient par leurs extrémités, en particulier à plateau de poinçon (24), pendant une première phase du mouvement ascensionnel de l'élévateur à aspiration (16) avec la couche intermédiaire (13), sur les objets se trouvant en dessous (piles de flans 12).
  4. Dispositif selon la revendication 3, caractérisé en ce que les serre-flan (22) sont en forme de piston et logés je mobiles avec une queue (poussoir 25), pouvant chacun coulisser, dans un boîtier de poussoir (26) cylindrique de l'élévateur à aspiration (16) et sont rappelés en direction de la sortie, de préférence par un ressort de pression (29).
  5. Dispositif selon la revendication 3, caractérisé en ce que, dans la position rentrée, les serre-flan (22) appuient - par application de l'élévateur à aspiration (16) sur la couche intermédiaire (13) - par le plateau de poinçon (24) sur la face inférieure de l'élévateur à aspiration (16), le plateau de poinçon (24) pénétrant dans l'évidement (23) de la couche intermédiaire (13).
  6. Dispositif selon la revendication 1 ainsi qu'une ou plusieurs autres revendications, caractérisé en ce que les évidements (23) dans la couche intermédiaire (13) et les serre-flan (22) correspondants sont répartis de telle façon qu'à chaque fois quatre piles de flans (12) sont sollicitées, au dessous de la couche intermédiaire (13) en cours de soulèvement, dans la zone des coins tournés les uns vers les autres, par un serre-flan (22), ou son plateau de poinçon.
  7. Dispositif selon la revendication 1 ainsi que l'une ou plusieurs des autres revendications, caractérisé en ce qu'en face inférieure de l'élévateur à aspiration (16) sont disposées des organes de guidage allongés, en forme de barres, notamment des pièces profilées (31), pénétrant, avec ajustement de forme, lors de l'abaissement de l'élévateur à aspiration (16) sur un groupe d'objets disposés les uns à côté des autres dans une couche de piles (11), en particulier des piles de flans (12), dans des espaces creux (32) formés entre celles-ci.
  8. Dispositif selon la revendication 7 ainsi qu'une ou plusieurs autres revendications, caractérisé en ce que les pièces profilées (31) sont montées en face inférieure de l'élévateur à aspiration (16), en particulier en face inférieure du serre-flan (22), et pénètrent dans des évidements (23) formés dans la couche intermédiaire (13).
  9. Dispositif selon la revendication 7, caractérisé en ce que les pièces profilées (31) ont une section transversale de forme angulaire (en forme de V), et pénètrent avec a justement de forme dans des espaces creux (12) de configuration correspondante, entre des piles de flans (12) voisines, composées de flans pour des boîtes à rabats (emballages Hinge-Lid).
  10. Dispositif selon la revendication 7, caractérisé en ce que la longueur des pièces profilées (31) est légèrement supérieure à la hauteur d'une pile de flans (12), l'extrémité inférieure de la pièce profilée (31) pénétrant dans un évidement (23) de la couche intermédiaire (13) sous-jacente.
  11. Dispositif selon la revendication 1 ainsi que l'une ou plusieurs des autres revendications, caractérisé en ce que l'élévateur à aspiration (16) possède une plaque aspirante (17) susceptible d'être levée et abaissée, présentant une chambre à vide (19) continue et dans laquelle sont disposés les boîtiers de poussoir (26) destinés aux serre-flan (22).
  12. Dispositif selon la revendication 1 ainsi qu'une ou plusieurs autres revendications, caractérisé en ce que l'élévateur à aspiration (16) est monté levable et abaissable sur une poutre transversale (49), déplaçable de son côté dans un bâti support (40) en forme de cadre, sur des glissières de guidage (45, 46) latérales, au moyen d'une transmission par câble (câble de traction 52).
EP90124401A 1990-01-16 1990-12-17 Dispositif pour séparer des couches (intermédiaires) d'une pile de produits empilés Expired - Lifetime EP0437760B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4001053A DE4001053A1 (de) 1990-01-16 1990-01-16 Vorrichtung zum abheben von (zwischen-)lagen gestapelter gegenstaende
DE4001053 1990-01-16

Publications (3)

Publication Number Publication Date
EP0437760A2 EP0437760A2 (fr) 1991-07-24
EP0437760A3 EP0437760A3 (en) 1991-09-11
EP0437760B1 true EP0437760B1 (fr) 1994-03-30

Family

ID=6398155

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90124401A Expired - Lifetime EP0437760B1 (fr) 1990-01-16 1990-12-17 Dispositif pour séparer des couches (intermédiaires) d'une pile de produits empilés

Country Status (6)

Country Link
US (1) US5174712A (fr)
EP (1) EP0437760B1 (fr)
JP (1) JPH04213525A (fr)
BR (1) BR9100158A (fr)
CA (1) CA2033407A1 (fr)
DE (2) DE4001053A1 (fr)

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IT1278207B1 (it) * 1995-05-18 1997-11-17 Gd Spa Metodo per l'estrazione di piani di supporto intermedi di pile di prodotti
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US20080112788A1 (en) * 2006-11-10 2008-05-15 Sage Automation, Inc. Depalletizing Apparatus and Method
US8087869B1 (en) * 2008-03-18 2012-01-03 Binford Wallace R Method and apparatus for loading palletized articles for blast freezing
ES2581057T3 (es) * 2011-12-20 2016-08-31 Ludwig BRANDMÜLLER Sistema de despaletizado y unidad de extracción
FR3008082B1 (fr) * 2013-07-03 2015-06-26 Peugeot Citroen Automobiles Sa Dispositif de depilage d'une pile de flans
DE102017011590A1 (de) * 2017-12-14 2019-06-19 Giesecke+Devrient Currency Technology Gmbh Verfahren zum Bedrucken von Bedruckstoffen, Zwischenlage und Verwendung
DE102021120224A1 (de) * 2021-04-09 2022-10-13 Gerhard Schubert Gesellschaft mit beschränkter Haftung Zuschnitt-Vereinzeler

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Also Published As

Publication number Publication date
BR9100158A (pt) 1991-10-22
JPH04213525A (ja) 1992-08-04
EP0437760A2 (fr) 1991-07-24
US5174712A (en) 1992-12-29
DE4001053A1 (de) 1991-07-18
EP0437760A3 (en) 1991-09-11
CA2033407A1 (fr) 1991-07-17
DE59005200D1 (de) 1994-05-05

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