EP3341297B1 - Tunnel de rétraction - Google Patents

Tunnel de rétraction Download PDF

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Publication number
EP3341297B1
EP3341297B1 EP16753933.7A EP16753933A EP3341297B1 EP 3341297 B1 EP3341297 B1 EP 3341297B1 EP 16753933 A EP16753933 A EP 16753933A EP 3341297 B1 EP3341297 B1 EP 3341297B1
Authority
EP
European Patent Office
Prior art keywords
nozzle openings
guide plate
shrinking tunnel
lifting devices
transport path
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.)
Active
Application number
EP16753933.7A
Other languages
German (de)
English (en)
Other versions
EP3341297A1 (fr
Inventor
Christian Schilling
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.)
KHS GmbH
Original Assignee
KHS 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 KHS GmbH filed Critical KHS GmbH
Publication of EP3341297A1 publication Critical patent/EP3341297A1/fr
Application granted granted Critical
Publication of EP3341297B1 publication Critical patent/EP3341297B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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
    • B65B53/066—Mobile frames, hoods, posts or the like
    • 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
    • B65B59/00—Arrangements to enable machines to handle articles of different sizes, to produce packages of different sizes, to vary the contents of packages, to handle different types of packaging material, or to give access for cleaning or maintenance purposes
    • B65B59/001—Arrangements to enable adjustments related to the product to be packaged
    • 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
    • B65B59/00—Arrangements to enable machines to handle articles of different sizes, to produce packages of different sizes, to vary the contents of packages, to handle different types of packaging material, or to give access for cleaning or maintenance purposes
    • B65B59/02—Arrangements to enable adjustments to be made while the machine is running
    • 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
    • B65B59/00—Arrangements to enable machines to handle articles of different sizes, to produce packages of different sizes, to vary the contents of packages, to handle different types of packaging material, or to give access for cleaning or maintenance purposes
    • B65B59/005—Adjustable conveying means

Definitions

  • the invention relates to a shrink tunnel according to the preamble of claim 1.
  • Shrink tunnels for shrink-wrapping shrink films on products are known.
  • the arrangements of nozzle openings are in this case formed by nozzle bodies, which are designed as plate-like hollow body with a plurality of nozzle openings on a transport path facing hollow body wall.
  • nozzle openings or the nozzle body are generally not adjustable, in particular not height adjustable on the transport path are provided, but it is required for a good shrinkage result, the hot gaseous medium emerging from the nozzle openings targeted or preferred to certain areas of the product and To judge the shrink film, it is common to provide orifices or baffles with which controlled nozzle openings can be covered and released.
  • each baffle is mounted for this purpose via a receptacle movable on a support beam in the form of a square, which extends within the treatment chamber of the shrink tunnel across its entire width.
  • a support beam in the form of a square, which extends within the treatment chamber of the shrink tunnel across its entire width.
  • On the side walls of the treatment room each support beam is guided by a respective passage to the outside in an intermediate wall region of the shrink tunnel and is held there at each end to a chain.
  • These chains are part of the lifting device for baffles together with the support beams. About the chains can be adjusted by means of a drive, the support beams and thus the baffles in height and positioned.
  • the object of the invention is to provide a shrink tunnel, which avoids the aforementioned disadvantages and in which it is possible to optimally adjust the baffles regardless of the height of the products and / or position.
  • a shrink tunnel is designed according to the patent claim 1.
  • the baffles are provided individually and separately on the arrangements of a plurality of nozzle openings or on the nozzle bodies having these nozzle openings and through the Lifting devices in their position, preferably adjustable in height. ** The adjustment of the baffles can both be such that all baffles are adjustable together in position, as well as such that at least a single baffle is independent of the other baffles in position adjustable.
  • the lifting devices and all elements of these lifting devices are independent of the position of the baffles outside the total cross section of the respective transport path or the treatment room.
  • the shrink tunnel according to the invention also on the hitherto customary, extending transversely through the treatment room of the transport path supporting beams for the baffles, so that the baffles can be placed in their lowest starting position, without the risk of collision of the products to be treated with elements the lifting devices consists.
  • the at least one transport path thus has in a plane perpendicular to the transport direction an overall cross-section which is adapted to the largest products to be processed with the shrink tunnel, i. a cross-section whose height and width is greater than the height and width of the largest products to be processed with the shrink tunnel.
  • the nozzle body, the baffles and preferably designed as trains or tension-type lifting devices lifting devices are located laterally from the respective transport path and outside the cross section of this transport route. Likewise, all drive elements in each state of the baffles outside the cross section of the transport path are arranged.
  • a significant advantage of the invention is also that even with located in the lowest stroke position baffles 8, the products 2 unhindered, especially not hindered by the lifting devices 9 and their drives through the shrink tunnel 1 can be moved.
  • the first guide plate and the at least one second guide plate associated therewith are arranged in different planes, in such a way that the first guide plate initially moves past the second guide plate when lifting from the starting position and finally entrains the second guide plate, with the aforementioned features can be used individually or in any combination.
  • Container or “packaging” are in the context of the invention in particular cans, bottles, tubes, Pourches, each made of metal, glass and / or plastic, but also other packaging, especially those for filling of powdery, granular, liquid or viscous Products are suitable.
  • 1 is a shrink tunnel, which is used in a known manner for shrinking a shrink film on products 2, which consist for example as bundles or packaging units at least partially surrounded by the shrink film of a plurality of packaged to the container packaging.
  • products 2 consist for example as bundles or packaging units at least partially surrounded by the shrink film of a plurality of packaged to the container packaging.
  • the feed dog 3.1 forms a horizontal or substantially horizontal transport plane TE, on which the products 2 rest.
  • the total cross section of the transport path 3 is chosen sufficiently large, so that even the products to be treated with the greatest height can easily pass through the transport pieces.
  • the respective product 2 at least partially enclosing shrink film is shrunk by exposure to a hot gaseous medium, preferably with hot air.
  • a hot gaseous medium preferably with hot air.
  • both sides of the transport path 3 in the manner known to those skilled nozzle arrangements or can bodies 5 are provided, which in the illustrated embodiment designed as a plate-like hollow body at their transport route 3 and facing inside and arranged in vertical planes parallel to the transport direction
  • a wall portions 5.1 perforated plate-like a plurality of nozzle openings 6 are provided for the exit of the hot gaseous medium.
  • the hot gaseous medium is supplied to the interior of the nozzle body 5 in each case via an overhead distribution channel 5.2, which extends over the entire, in the transport direction A extending length of the relevant nozzle body 5 extends and the hot gaseous medium is supplied from a corresponding heater.
  • two nozzle bodies 5 are subsequently provided one after the other on each side of the transport path 3 in the transport direction A.
  • the nozzle body 5 on each side of the transport path 3 thus form a nozzle body pair.
  • each pair of nozzle body pair each two dazzling acting baffles 7 and 8 are provided and guided. These are height-adjustable in the vertical direction parallel to their surface sides and transversely to their longitudinal extent (double arrows B and C) and can thereby be selectively placed in front of them to cover specific nozzle openings 6 or groups of nozzle openings 6.
  • the baffles 7 and 8, which are arranged in the illustrated embodiment with their surface sides in vertical or substantially vertical planes are guided by not shown, for example, provided on the nozzle bodies 5 guides, which are of course outside the cross section of the transport path. 3
  • a special feature of the shrink tunnel 1 is that all guide plates 7 and 8 are each guided individually and for the controlled up and down moving (Double arrow C) of the baffles 8 each own lifting devices 9 are provided, in the illustrated embodiment, for each baffle 8 two lifting devices 9, which act on one end of the baffles 8 and completely with all their functional elements outside the total cross section of the transport path 3 are arranged.
  • the respective lifting device 9 is a tension-type lifting device in the form of a cable, namely with a rope 10 and a cable drum 11, to which the cable 10 for controlled lifting of the respective baffle end is wound more or less or of which the rope 10 for controlled lowering of the relevant baffle end is more or less unwound.
  • a separate independent drive can be provided for each lifting device 9 but also a separate independent drive can be provided.
  • the two lifting devices 9 in the region of the inlet 1.1 and also in the region of the outlet 1.2 there are thus in each case two lifting devices 9, the two lifting devices 9 in the region of the inlet 1.1 and the two lifting devices 9 in the region of the outlet 1.2 each having a common drive, e.g. electromotive drive to drive the cable drums 11 have.
  • the two cable drums 11 at the inlet 1.1 and the two cable drums 11 at the outlet 1.2 are each provided on a common, driven by the drive shaft 12, which in horizontal or substantially horizontal direction perpendicular to the transport direction A far above the transport path 3 and of the upper end 4.1 of the treatment room 4 extends.
  • the return movement of the baffles 8 to their lower starting position is e.g. by gravity.
  • the baffles 7 are guided freely movable in the vertical direction.
  • the lower starting position of the baffles 7 is defined by stops 13, in such a way that adjoins each located in its lower position starting baffle 7, the underlying and located in its lower position starting baffle 8, as shown in the Fig. 3-5 is shown.
  • FIG. 3-5 a state in which the two baffles 7 and 8 are located on each side of the transport path 3 in its lowermost position (home position).
  • Both baffles 7 and 8 are raised on each side of the transport path 3 in its uppermost position.
  • the baffle 7 in its lowest position defined by the stop 13 while the respective baffle 8 is employed at an angle, that is increasingly raised in the transport direction A, so that the number of the exit of the hot gaseous medium released nozzle openings 6 in the transport direction A on both sides of the transport path 3 increases.
  • only the nozzle openings 6 are released below the baffle 8 for the exit of the hot gaseous medium.
  • the 10 and 11 show again representations similar to the Fig. 5, 7 and 9 , the two in the transport direction A successive nozzle body 5 without the two baffles 7 and 8 on one side of the transport path 3.
  • the arrows D the outlet of the hot gaseous medium from the nozzle openings 6 is indicated.
  • the gaseous medium is removed from the interior of the shrink tunnel 1.
  • a Anströmblech 16 is provided which increasingly reduces the height of the channel 5.2 and thus the cross section of this channel in the flow direction of the supplied hot gaseous medium.
  • the top of the respective channel 5.2 is designed as an inclined Anströmblech, as in the FIGS. 5, 7 and 9 is shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Drying Of Solid Materials (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)

Claims (11)

  1. Tunnel de rétraction pour la rétraction de films rétractables sur des produits (2), par exemple sur un emballage, avec au moins un trajet de transport (3) réalisé dans un espace de traitement (4) et s'étendant entre une entrée de tunnel de rétraction (1.1) et une sortie de tunnel de rétraction (1.2) pour les produits (2), avec au moins deux agencements d'ouvertures de buse (6), qui servent à la sortie d'un milieu chaud, gazeux entraînant la rétraction du film rétractable agencé à différents, de préférence opposés l'un à l'autre, côtés du trajet de transport (3), ainsi qu'avec au moins respectivement un premier déflecteur (8), lequel est associé à chaque agencement d'ouvertures de buse (6) et est réglable par au moins un dispositif de levage (9) le long de l'agencement concerné d'ouvertures de buse (6) pour le recouvrement et la libération commandés d'ouvertures de buse (6), de préférence perpendiculairement ou sensiblement perpendiculairement à un plan de transport (TE) de l'au moins un trajet de transport (3), dans lequel les premiers déflecteurs (8) sont prévus individuellement et séparément au niveau des agencements des ouvertures de buse (6) et respectivement individuellement ou en groupes ou tous ensemble sont réglables en position, de préférence en hauteur, par les dispositifs de levage (9), caractérisé en ce que le premier déflecteur (8) et le, au moins un, deuxième déflecteur (7) qui lui est associé, sont agencés dans différents plans, et ce de sorte que le premier déflecteur (8) se déplace lors du soulèvement de la position de départ d'abord devant le deuxième déflecteur (7) et entraîne finalement le deuxième déflecteur (7).
  2. Tunnel de rétraction selon la revendication 1, caractérisé en ce qu'au moins un deuxième déflecteur (7) est associé à chaque agencement d'ouvertures de buse (6), que les deuxièmes déflecteurs (7) sont prévus individuellement et séparément au niveau des agencements des ouvertures de buse (6) et sont réglables en position, de préférence en hauteur, par les dispositifs de levage (9).
  3. Tunnel de rétraction selon la revendication 1 ou 2, caractérisé en ce que les dispositifs de levage (9) et tous les éléments (12) de l'entraînement des dispositifs de levage (9) sont agencés dans chaque position des déflecteurs (7, 8) à l'extérieur de la section transversale, que le trajet de transport (3) ou l'espace de traitement (4) présentent dans un plan perpendiculairement à la direction de transport (A), dans lequel cette section transversale est adaptée aux dimensions des produits (2) les plus grands à traiter avec le tunnel de rétraction (1).
  4. Tunnel de rétraction selon l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins deux dispositifs de levage (9) agissent sur l'au moins un premier déflecteur (8) associé à l'agencement concerné d'ouvertures de buse, et ce de préférence sur les extrémités de ce déflecteur (8).
  5. Tunnel de rétraction selon l'une quelconque des revendications précédentes, caractérisé en ce que les agencements d'ouvertures de buse (6) sont formés respectivement par au moins un corps de buse (5) présentant les ouvertures de buse (6) ou respectivement par au moins deux corps de buse (5) se raccordant l'un à l'autre et/ou se suivant l'un l'autre dans la direction de transport (A).
  6. Tunnel de rétraction selon l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins un déflecteur associé à l'agencement concerné d'ouvertures de buse (6), de préférence l'au moins un, premier déflecteur (8) s'étend sur toute la longueur, que présente l'agencement des ouvertures de buse (6) dans la direction de transport (A).
  7. Tunnel de rétraction selon l'une quelconque des revendications 2 - 6, caractérisé en ce que l'au moins un deuxième déflecteur (7) s'étend seulement sur une partie de la longueur que présente l'agencement des ouvertures de buse (6) dans la direction de transport (A), de préférence sur une longueur partielle de l'agencement des ouvertures de buse (6) se raccordant à l'entrée de tunnel de rétraction (1.1).
  8. Tunnel de rétraction selon l'une quelconque des revendications 2 - 7, caractérisé en ce que l'au moins un deuxième déflecteur (7) est déplacé avec le premier déflecteur (8) ou avec l'au moins un dispositif de levage (9) de ce déflecteur pour le recouvrement et la libération commandés d'ouvertures de buse (6).
  9. Tunnel de rétraction selon l'une quelconque des revendications précédentes, caractérisé en ce que les dispositifs de levage (9) sont réalisés en tant que dispositifs de soulèvement de type traction, par exemple en tant que palan à câble ou à chaîne.
  10. Tunnel de rétraction selon l'une quelconque des revendications précédentes, caractérisé en ce que respectivement un entraînement propre, de préférence à commande autonome est prévu pour chaque dispositif de levage (9), ou que deux dispositifs de levage (9), qui sont reliés l'un à l'autre par entraînement l'un en face de l'autre au niveau de l'au moins un trajet de transport (3) avec un arbre (12) agencé à l'extérieur de la section transversale totale du trajet de transport (3) ou de l'espace de traitement (4) ainsi qu'avec un entraînement, par exemple un entraînement électromoteur.
  11. Tunnel de rétraction selon l'une quelconque des revendications précédentes, caractérisé en ce que les premier et deuxième déflecteurs (7, 8) sont réalisés et déplaçables entre une position de départ et une position finale de sorte que les déflecteurs (7, 8) se raccordent l'un à l'autre dans la position de départ et/ou recouvrent toutes les ouvertures de buse (6) tournées vers les déflecteurs et libèrent toutes les ouvertures de buse (6) dans la position finale soulevée.
EP16753933.7A 2015-08-26 2016-08-22 Tunnel de rétraction Active EP3341297B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015114161.2A DE102015114161A1 (de) 2015-08-26 2015-08-26 Schrumpftunnel
PCT/EP2016/069767 WO2017032727A1 (fr) 2015-08-26 2016-08-22 Tunnel de rétraction

Publications (2)

Publication Number Publication Date
EP3341297A1 EP3341297A1 (fr) 2018-07-04
EP3341297B1 true EP3341297B1 (fr) 2019-04-24

Family

ID=56740251

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16753933.7A Active EP3341297B1 (fr) 2015-08-26 2016-08-22 Tunnel de rétraction

Country Status (4)

Country Link
US (1) US10696438B2 (fr)
EP (1) EP3341297B1 (fr)
DE (1) DE102015114161A1 (fr)
WO (1) WO2017032727A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019106530A1 (de) * 2019-03-14 2020-09-17 Krones Aktiengesellschaft Schrumpfvorrichtung und Verfahren zum Einstellen und/oder Verstellen und/oder Anpassen einer Schrumpfvorrichtung

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8411758U1 (de) * 1984-07-12 A. Reker Maschinenfabrik und Baggerbau GmbH, 4937 Lage Ofen für eine Schrumpffolienanlage
US3222800A (en) * 1962-05-29 1965-12-14 Weldotron Corp Apparatus for shrinking wrappers of packages
US3312811A (en) * 1964-02-04 1967-04-04 Shanklin Frank Garrett Shrink tunnel
AU1413566A (en) * 1966-11-18 1969-03-13 W. R. Grace Australia Packaging
US4092382A (en) * 1976-03-31 1978-05-30 Owens-Illinois, Inc. Method of heat shrinking thermoplastic sleeve wraps on glass containers
US6689180B1 (en) * 2002-11-14 2004-02-10 Benison & Co., Ltd. Hot air flow control device of heat-shrinking film packaging machine
DE102006036590A1 (de) 2006-08-04 2008-02-07 Khs Ag Verfahren zum Aufschrumpfen einer Schrumpffolie auf Verpackungen sowie Vorrichtung zum Durchführen des Verfahrens
EP2653394B1 (fr) * 2012-04-18 2015-03-04 Krones Aktiengesellschaft Dispositif de rétractation avec baguette d'obturation
DE102012103402B4 (de) * 2012-04-18 2024-08-22 Krones Ag Blendenleiste für Schrumpfvorrichtung
DE102012103398B4 (de) * 2012-04-18 2024-08-22 Krones Ag Schrumpfvorrichtung mit Blendenleiste

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3341297A1 (fr) 2018-07-04
US20180229878A1 (en) 2018-08-16
DE102015114161A1 (de) 2017-03-02
US10696438B2 (en) 2020-06-30
WO2017032727A1 (fr) 2017-03-02

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