EP0031512B1 - Dispositif pour couvrir une pile d'objets d'une housse rétractable - Google Patents

Dispositif pour couvrir une pile d'objets d'une housse rétractable Download PDF

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Publication number
EP0031512B1
EP0031512B1 EP80107741A EP80107741A EP0031512B1 EP 0031512 B1 EP0031512 B1 EP 0031512B1 EP 80107741 A EP80107741 A EP 80107741A EP 80107741 A EP80107741 A EP 80107741A EP 0031512 B1 EP0031512 B1 EP 0031512B1
Authority
EP
European Patent Office
Prior art keywords
lifting carriage
support arms
stack
articles
support
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP80107741A
Other languages
German (de)
English (en)
Other versions
EP0031512A1 (fr
Inventor
Rainer Wilhelm Hannen
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.)
MSK Verpackungs Systeme GmbH
Original Assignee
MSK Verpackungs Systeme GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MSK Verpackungs Systeme GmbH filed Critical MSK Verpackungs Systeme GmbH
Priority to AT80107741T priority Critical patent/ATE2945T1/de
Publication of EP0031512A1 publication Critical patent/EP0031512A1/fr
Application granted granted Critical
Publication of EP0031512B1 publication Critical patent/EP0031512B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/26—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks
    • B65B43/34—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks by internal pressure
    • 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

Definitions

  • the invention relates to a device for covering a stack of goods with a shrink hood, wherein two driven support arms are provided with clamps for receiving the upper unfolded edge of the shrink hood, which are vertically movable and are pivoted up to a storage space for the stack of goods.
  • a generic device (DE-A-2 806 343) the free end of a tubular film web wound on a roll is gripped by a device which unfolds the front edge of the tubular film web and separates a section from the web, at the same time a weld seam to form a Shrink hood is placed.
  • the two support arms which are mounted independently of one another in separate guides, are then moved vertically upwards and pivoted, the shrink hood unfolding as a result of this movement.
  • the support arms move downward and pull the shrink hood over the stack of goods. After loosening the clamps, the support arms can return to their starting position.
  • the device known so far has proven itself. However, there is room for improvement.
  • the object of the invention is to simplify the construction of a device of the type described at the outset and to improve its function.
  • support arms are connected to a common support tube which is only pivotally supported on one side about a substantially horizontal axis on a lifting carriage which is movable in vertical guides.
  • the device according to the invention enables a space-saving design because the support tube for the support arms is only supported on one side and accordingly a lifting slide with associated guides only needs to be attached to one side of the device. Overall, this leads to a simpler, but also less expensive construction, with an additional advantage being seen in the fact that the device can be adapted to different size ratios without difficulty, i.e. that the device can at least partially be constructed as a kit.
  • the guides for the lifting slide consist of a guide tube, preferably of two parallel vertical tubes, in particular rectangular tubes, on which the lifting slide is supported with rollers or the like made of steel, plastic or the like. Rubber rollers are preferably used to support the lifting carriage on the guide tubes, because then less noise is generated when the device is working.
  • An expedient embodiment of the invention is characterized in that the lifting carriage has a continuous recess for the guide tubes, which are accordingly enclosed by the lifting carriage in a vertical projection.
  • the invention allows the support tube of the support arms or its pivot bearing to extend as far as between the guide tubes - and also beyond. In this way, a cheaper weight balance is possible.
  • the lifting carriage on the one hand and the support tube on the other hand are expediently driven independently of one another. This does not rule out that the two drives can be controlled in such a way that the lifting carriage and support tube are moved simultaneously.
  • the control in the individual case can be determined by simple tests, the main thing being that the shrink hood held by the support arms unfolds completely on the way up to the stack of packaged goods.
  • the support arms should be arranged on the support tube in an adjustable manner.
  • the mutual distance between the support arms with respect to a central position should be uniform and at the same time changeable.
  • a light sensor arranged in the region or below the swivel axis on the lifting carriage can also be provided for detecting the height of the stack of goods.
  • the movement of the lifting carriage in particular can be controlled so that after turning, the opening of the shrink hood is exactly congruent with the top edge of the stack of goods.
  • the device shown is used to cover stacks of goods 29 brought up on a roller conveyor 60 with shrink hoods 43.
  • the shrink hoods 43 are formed by sections of a tubular film web which is stored on a roll (not shown).
  • a device, also not shown, for pulling off, holding and separating or welding the shrink hoods is disclosed in DE-A-2 806 343.
  • the device shown can also work with ready-made shrink hoods.
  • the shrink hoods 43 are gripped along their upper unfolded edge with clamps 38, 39 by two support arms 27, 28 and are first guided upward along the line 61 indicated by dash-dotted lines in FIG. 2, then pivoted through 180 ° to the stack of goods 29 and finally over pulled the stack of goods 29.
  • the two support arms 27, 28 are arranged on a common support tube 62, one end of which is supported in a lifting carriage 63 which is supported, guided and guided in two vertical rectangular tubes 64, 65 and can be moved in the vertical direction.
  • the support arms 27, 28 are arranged adjustably on the support tube 62, in such a way that they are equipped with a device, not shown in detail, e.g. a spindle drive, a rack and pinion drive or the like can be adjusted uniformly and simultaneously with respect to a central position.
  • a device not shown in detail, e.g. a spindle drive, a rack and pinion drive or the like can be adjusted uniformly and simultaneously with respect to a central position.
  • the brackets 38, 39 are constructed and designed as disclosed in German document DE-A-2 843122.8.
  • the clamps can also be actuated electrically instead of pneumatically, so that only one compressed air line or operating current line and the necessary control lines have to be led to the lifting carriage 63, while the actuating members can be arranged on the lifting carriage itself.
  • the lifting carriage 63 has a box-like shape and a continuous inner recess 66 for the two rectangular tubes 64, 65 arranged at a distance from one another.
  • a plurality of rubber rollers 67 are supported, which are supported on the outer sides of the rectangular tubes 64, 65 and Guide the lifting carriage 63 in its vertical movement.
  • An electric motor 68 arranged at the lower end of the rectangular tubes 64, 65 serves as the drive for the lifting carriage 63, the drive energy of which is transmitted to the lifting carriage 63 during chain operation or the like (not shown).
  • the entire drive device for the lifting carriage 63 is arranged between the rectangular tubes 64, 65, the dimensions of the device can be reduced so that a forklift can place the pallets with the stacks of goods directly next to the lifting carriage on the side of the roller conveyor 60.
  • the lifting carriage should be moved with two chains and the drive sprockets should have locking pawls.
  • the swivel drive for the support arms 27, 28 or the support tube 62 is independent of the drive of the lifting carriage 63 and has an electric motor 69, which on the lifting carriage 63 on the side facing away from the support tube 62 in the vicinity of the pivot bearing 70 of the support tube 62 is connected.
  • the pivot bearing 70 of the support tube 62 extends through the recess 66 of the lifting carriage 63 in the embodiment shown in the drawing.
  • a control device 71 with a control panel is available, in which information from a light button 72 is also processed, which is arranged on the lifting slide in the region below the pivot axis of the support tube 62.
  • the light sensor 72 is aligned and switched so that it stops the movement of the lifting carriage 63 when the shrink hood 43 pivoted with its opening over the stack of goods 29 is arranged congruently with the upper edge of the stack of goods 29. This has advantages with regard to the air jam generated when the shrink hood 43 is pulled over.
  • a guide track consisting of tubes for guiding the shrink hood 43 in the swivel range is connected to the lifting slide 63. This guideway is intended to prevent the shrink hood from turning over when swiveling.
  • light barriers 73, 74 are provided to secure the work area swept by the support arms 27, 28, which switch off the drives as soon as a person enters the work area.
  • a contact plate 75 which switches off the drives under load is arranged in the work area.
  • the device shown can also be assembled from building blocks in the manner of a modular system because the support arms 27, 28 are connected to a common support tube 62 and this is only supported on one side.
  • the adjustability of the support arms and their clamps also enables simple and quick adaptation to different hood sizes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Specific Conveyance Elements (AREA)
  • Basic Packing Technique (AREA)
  • De-Stacking Of Articles (AREA)
  • Packaging Of Special Articles (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Stacking Of Articles And Auxiliary Devices (AREA)

Claims (12)

1. Dispositif pour couvrir une pile d'objets (29) d'une housse rétractable (43), comportant deux bras porteurs entraînés (27, 28) avec griffes (38, 39) pour recevoir le bord supérieur déployé de la housse rétractable (43) qui sont montés de manière à pouvoir se mouvoir verticalement et à pouvoir pivoter jusqu'au-dessus d'une surface de pose destinée à la pile d'objets (29), caractérisé en ce que les bras porteurs (27, 28) sont reliés à un tube porteur commun (62) qui est monté d'un seul côté, de manière à pouvoir pivoter autour d'un axe pratiquement horizontal, sur un coulisseau de levage (63) qui peut se mouvoir dans des guides verticaux (64, 65).
2. Dispositif selon la revendication 1, caractérisé en ce que les guides verticaux (64, 65) destinés au coulisseau de levage (63) présentent au moins un tube de guidage et sont de préférence formés de tubes en particulier rectangulaires sur lesquels le coulisseau de levage (63) est soutenu par des galets (67).
3. Dispositif selon la revendication 2, caractérisé en ce que le coulisseau de levage (63) est soutenu par des galets en caoutchouc (67) sur les tubes de guidage (64,65).
4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que le coulisseau de levage (63) présente un évidement de part en part (66) pour les tubes de guidage (64,65).
5. Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le tube porteur (62) des bras porteurs (27, 28), ou son palier de pivotement (70), s'étend jusque entre les tubes de guidage (64, 65).
6. Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le coulisseau de levage (63), d'une part, et le tube porteur (62), d'autre part, sont entraînés indépendamment l'un de l'autre.
7. Dispositif selon l'une quelconque des revendications 1 à 6, caractérisé en ce que les bras porteurs (27, 28) sont disposés de façon réglable sur le tube porteur (62).
8. Dispositif selon l'une quelconque des revendications 1 à 7, caractérisé en ce que l'espacement mutuel des bras porteurs (27, 28) peut être modifié simultanément, par réglage, relativement à une position centrale.
9. Dispositif selon l'une quelconque des revendications 1 à 8, caractérisé en ce que dans la région de l'axe de pivotement ou en dessous de celui-ci, un palpeur photoélectrique (72) est prévu sur le coulisseau de levage (63) pour détecter la hauteur de la pile d'objets (29).
10. Dispositif selon l'une quelconque des revendications 1 à 9, caractérisé par des barrières photoélectriques (73, 74) protégeant la région de travail des bras porteurs pivotants (27, 28).
11. Dispositif selon l'une quelconque des revendications 1 à 10, caractérisé en ce que dans la région de travail des bras porteurs pivotants (27, 28) est disposée une plaque de contact (75) qui débranche les entraînements (68, 69) en cas de charge.
12. Dispositif selon l'une quelconque des revendications 1 à 11, caractérisé en ce que le dispositif d'entraînement (68) du coulisseau de levage (63) est disposé entre les tubes rectangulaires (64, 65), dans la région du centre de gravité du coulisseau de levage (63).
EP80107741A 1979-12-19 1980-12-09 Dispositif pour couvrir une pile d'objets d'une housse rétractable Expired EP0031512B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80107741T ATE2945T1 (de) 1979-12-19 1980-12-09 Vorrichtung zum ueberziehen eines gutstapels mit einer schrumpfhaube.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792951086 DE2951086A1 (de) 1979-12-19 1979-12-19 Vorrichtung zum ueberziehen eines gutstapels mit einer schrumpfhaube
DE2951086 1979-12-19

Publications (2)

Publication Number Publication Date
EP0031512A1 EP0031512A1 (fr) 1981-07-08
EP0031512B1 true EP0031512B1 (fr) 1983-04-06

Family

ID=6088903

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80107741A Expired EP0031512B1 (fr) 1979-12-19 1980-12-09 Dispositif pour couvrir une pile d'objets d'une housse rétractable

Country Status (4)

Country Link
US (1) US4409774A (fr)
EP (1) EP0031512B1 (fr)
AT (1) ATE2945T1 (fr)
DE (2) DE2951086A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7210278B2 (en) * 2005-09-08 2007-05-01 Tien Heng Machniery Co., Ltd. Detecting and protecting device of a shrink film machine
CN101830292B (zh) * 2010-04-28 2011-09-07 哈尔滨博实自动化股份有限公司 收放及拉伸管形膜的机构

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2706955A1 (de) * 1977-02-18 1978-08-24 Keller Gmbh & Co Kg Einrichtung zum umhuellen von stapeln, insbesondere von ziegelstapeln

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7804406U1 (de) * 1978-10-19 Maschinen- U. Stahlbau Kleve Gmbh, 4192 Kalkar-Wissel Vorrichtung zur Bildung sowie zum Überziehen einer Schrumpffolienhaube über ein einzuschrumpfendes Stückgut mit einer Auffalteinrichtung zum Auffalten und Teilen des zusammengefaltet eingeführten Folienschlauch« und mit einer Überzieheinrichtung
US2916860A (en) * 1955-12-02 1959-12-15 Roy S Sanford & Company Carton sealing
US2939259A (en) * 1958-05-06 1960-06-07 Us Rubber Co Wrapping device
DE1195677B (de) * 1962-12-20 1965-06-24 Trepel K G Maschinenfabrik Vorrichtung zum Umlegen von Plattenstapeln
US3707064A (en) * 1970-02-02 1972-12-26 Aubura Eng Inc Apparatus for shrink-wrapping
US3738079A (en) * 1971-02-11 1973-06-12 Auburn Eng Inc Bag type shrink wrapping apparatus
US3675388A (en) * 1971-03-08 1972-07-11 Signode Corp Load bagging apparatus
GB1433997A (en) * 1973-05-07 1976-04-28 Serlachius Oy Apparatus for forming a sack from a continuous tube
US3902303A (en) * 1974-08-19 1975-09-02 Henry E King Stretch bag wrapping machine
US4078358A (en) * 1976-08-31 1978-03-14 National Distillers And Chemical Corporation Bag-hanging and bag-filling machines adapted for synchronous and independent operation and method of using same
DE2806343C2 (de) * 1978-02-15 1982-12-09 Msk - Verpackungs-Systeme Gmbh, 4192 Kalkar Verfahren zum Überziehen einer Schrumpffolienhaube über Stückgut und Vorrichtung zur Durchführung des Verfahrens

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2706955A1 (de) * 1977-02-18 1978-08-24 Keller Gmbh & Co Kg Einrichtung zum umhuellen von stapeln, insbesondere von ziegelstapeln

Also Published As

Publication number Publication date
DE3062646D1 (en) 1983-05-11
ATE2945T1 (de) 1983-04-15
EP0031512A1 (fr) 1981-07-08
DE2951086A1 (de) 1981-06-25
US4409774A (en) 1983-10-18

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