EP3341297A1 - Tunnel de rétraction - Google Patents

Tunnel de rétraction

Info

Publication number
EP3341297A1
EP3341297A1 EP16753933.7A EP16753933A EP3341297A1 EP 3341297 A1 EP3341297 A1 EP 3341297A1 EP 16753933 A EP16753933 A EP 16753933A EP 3341297 A1 EP3341297 A1 EP 3341297A1
Authority
EP
European Patent Office
Prior art keywords
nozzle openings
baffle
shrink
baffles
lifting devices
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.)
Granted
Application number
EP16753933.7A
Other languages
German (de)
English (en)
Other versions
EP3341297B1 (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

Links

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
  • Shrink tunnels for shrink-wrapping shrink films on products in particular on products in the form of containers, consisting of several product units or packaging means (for example, cans or bottles), and by the
  • Shrinking film to be held together are known.
  • the arrangements of nozzle openings are in this case formed by nozzle bodies, which face as plate-like hollow body with a plurality of nozzle openings on one of the transport path
  • height adjustable are provided on the transport route, but it is necessary for a good shrinkage result, directed specifically from the nozzle openings hot gaseous medium or preferably to certain areas of the product and the shrink film, it is common to provide screens or baffles with which controlled nozzle openings can be covered and released.
  • screens or baffles with which controlled nozzle openings can be covered and released.
  • baffles in the vertical direction and thus transversely or perpendicular to its longitudinal extension and also to the transport direction in which the products are moved through the shrink tunnel, height adjustable.
  • 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.
  • 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 by means of a drive the
  • the positioning of the baffles is also determined by the height of the products and in special constellations, e.g. For products of greater height an optimal adjustment of the baffles is not possible, it is also not possible in particular to position the baffles very deep, ie in the vicinity of the transport plane.
  • 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 individually and separately to the arrangements of a plurality of nozzle openings or to these
  • nozzle orifices having nozzle bodies and by 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
  • Transport direction a total cross-section, the largest, with the
  • Shrink tunnel adapted to be processed products, i. a cross section whose height and width is greater than the height and width of the largest, with the
  • Shrink tunnel to be processed products 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 shrink tunnel is designed, for example, such that the guide plates are movable not only parallel to their surface sides and transversely to their longitudinal extension but also perpendicular or substantially perpendicular to a transport plane of the at least one transport path, or
  • each arrangement of nozzle openings is associated with at least one second baffle that the second baffles individually and separately to the
  • Arrangements of the nozzle openings provided and are adjustable by the lifting devices in position, preferably in height,
  • Lifting devices are arranged in any position of the baffles outside the cross section, the transport path or the treatment chamber in a plane perpendicular to the transport direction, said cross section is adapted to the dimensions of the largest, to be processed with the shrink tunnel products,
  • At least two lifting devices engage on the at least one first guide plate associated with the respective arrangement of nozzle openings, preferably at the ends of this guide plate,
  • the arrangements of nozzle openings are each formed by at least one nozzle body having the nozzle openings or in each case by at least two nozzle bodies which follow one another in the transport direction and / or adjoin one another,
  • At least one of the respective arrangement of nozzle openings associated baffle, preferably the at least one first baffle extends over the entire length, the arrangement of the nozzle openings in
  • the at least one second baffle extends only over a part of that length which has the arrangement of the nozzle openings in the transport direction, preferably via a partial length of the arrangement of the nozzle openings adjoining the shrink tunnel inlet,
  • lifting devices are designed as tension-type lifting devices, for example as cable or chain hoist,
  • a separate, preferably independently controllable drive is provided for each lifting device
  • a drive for example an electric motor drive
  • first and second baffles are designed and movable between a starting position and an end position, that the baffles connect to one another in the starting position and / or cover all the nozzle openings facing the baffles and release all the nozzle openings in the raised end position,
  • 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 first moves past the second guide plate when lifting from the starting position and finally entrains the second guide plate, the aforementioned features can be used individually or in any combination.
  • Products in the sense of the invention are generally at least partially encased in a shrink film Products or objects, but in particular containers made of several packaging materials, which pass through the shrunk-on shrink film
  • Fig. 2 is an enlarged partial view of Fig. 1;
  • Fig. 3 in a schematic representation of two sides of a transport route
  • Nozzle body along with two baffles in its bottom
  • Fig. 6 and 7 in front view and in side view, the two adjoining nozzle body together with the baffles in their uppermost end position; 8 and 9 in front view and in side view, the two adjoining nozzle body together with the baffles, one of which is in its lowermost starting position and the other is employed at an angle;
  • Fig. 10 and 1 1 in side view, the two adjoining nozzle body with distant baffles.
  • 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.
  • Treatment chamber 4 of an inlet 1 .1 to an outlet 1 .2 moves.
  • Feed dog 3.1 forms a horizontal or substantially horizontal
  • Transport level TE on which 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.
  • nozzle arrangements or can bodies 5 are provided, which in the illustrated embodiment designed as a plate-like hollow body at their transport path 3 and facing each other inside and arranged in vertical planes parallel to the transport direction A wall portions 5.1
  • Hollow plate-like with a plurality of nozzle openings 6 are provided for the exit of the hot gaseous medium.
  • the hot gaseous medium is the
  • nozzle body 5 Interior of the nozzle body 5 respectively supplied 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 two nozzle-like pair of guide plates 7 and 8 are provided and guided , These are in the vertical direction parallel to their surface sides and transverse to their longitudinal extent
  • adjustable in height (double arrows B and C) and can thus be targeted to cover certain nozzle openings 6 or groups of nozzle openings 6 are placed in front of them.
  • 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 of course outside of
  • baffles 7 which are each formed as a short baffles with a rectangular blank and oriented with their longitudinal sides in the transport direction A, extend in the illustrated embodiment, only over the length of the immediately adjacent to the inlet 1 .1 nozzle body fifth
  • baffles 8 which also with rectangular blank or formed and with their longitudinal sides in
  • Transport direction A are oriented, each extending over the entire length of the respective nozzle body formed by the two nozzle bodies 5.
  • 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
  • the respective lifting device 9 is a tension-type lifting device in the form of a cable, with a rope 10 and a cable drum 1 1, to which the cable 10 for controlled lifting of the respective baffle end is wound more or less or of which Rope 10 is more or less unwound for the controlled lowering of the respective baffle end.
  • 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 in the area of the outlet 1 .2 each one common drive, eg electromotive drive to drive the cable drums 1 1 have.
  • the two cable drums 1 1 at the inlet 1 .1 and the two cable drums 1 1 at the outlet 1 .2 are each provided for this purpose on a common, driven by the drive shaft 12, which in horizontal or in the
  • Starting position of the baffles 7 is defined by stops 13, in such a way that at each located in its lower position starting baffle 7 the
  • baffle 8 connects, as shown in Figs. 3 - 5 is shown.
  • Wall portion 5.1 of the nozzle body 5 a smaller distance than the provided on the same side of the transport path 3 baffle 8.
  • Lifting devices 9 the most different positions and / or orientations for the baffles 7 and 8 and thus the most different patterns for the released for an exit of the hot gaseous medium nozzle openings 6 along the transport path 3 achievable.
  • FIGS. 3-5 show a state in which the two guide plates 7 and 8 are located on each side of the transport path 3 in their lowermost position (starting position).
  • Figs. 6 and 7 both baffles 7 and 8 on each side of
  • Transport route 3 raised to its uppermost position. 8 and 9 is located on each side of the transport path 3, the baffle 7 in its lowest position defined by the stop 13, while the respective baffle 8 is set at an angle, i. is increasingly raised in the transport direction A, so that the number of released for the exit of the hot gaseous medium
  • Nozzle openings 6 in the transport direction A on both sides of the transport path 3 increases. Here, only the nozzle openings 6 are released below the baffle 8 for the exit of the hot gaseous medium.
  • FIGS. 10 and 11 again show illustrations similar to FIGS. 5, 7 and 9, the two nozzle bodies 5 which follow one another in the transport direction A without the two baffles 7 and 8 on one side of the transport path 3.
  • the arrows D indicate the exit of the hot gaseous medium from the nozzle openings 6 indicated.
  • the gaseous medium from the interior of the
  • Shrink tunnels 1 dissipated.
  • a Anströmblech 16 is provided in the reproduced in the Fig. 10 embodiment within the respective channel 5.2 which the height of the channel 5.2 and thus the cross section of this channel in
  • the upper side of the respective channel 5.2 is designed as an inclined inflow plate, as is also shown in FIGS. 5, 7 and 9.
  • Transport route 3 extends over all provided on this transport route side nozzle body 5 and / or over the entire length of the treatment chamber 4. Furthermore, it is not necessary that the lifting devices 9 are formed by cables. Other drives for raising and lowering at least the baffles 8 can be used. It is essential, however, that all elements of the respective drive in each stroke position of the baffles outside the
  • Movement space are located, in which the products 2 with the largest
  • Shrink tunnel 1 are moved.
  • the shrink tunnel then least two preferably parallel transport pieces 3, which in turn then on both sides arrangements of nozzle openings or nozzle body with nozzle openings 6 and baffles, eg with the Guiding plates 7 and 8 are provided.

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)

Abstract

L'invention concerne un tunnel de rétraction servant à rétracter un film rétractable sur des produits, comportant au moins une voie de transport des produits réalisée dans un espace de traitement et s'étendant entre une entrée du tunnel de rétraction et une sortie du tunnel de rétraction, au moins deux ensembles d'orifices de buse qui sont agencés sur des côtés différents de la voie de transport et servent à la sortie d'un fluide gazeux chaud provoquant la rétraction du film rétractable, et au moins respectivement une première tôle de guidage qui est associée à chaque ensemble d'orifices de buse et qui peut être déplacée le long de chaque ensemble d'orifices de buse pour recouvrir ou dégager les orifices de buse de manière commandée.
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 true EP3341297A1 (fr) 2018-07-04
EP3341297B1 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
DE102012103402A1 (de) 2012-04-18 2013-10-24 Krones Ag Blendenleiste für Schrumpfvorrichtung
DE102012103398A1 (de) * 2012-04-18 2013-10-24 Krones Ag Schrumpfvorrichtung mit Blendenleiste

Also Published As

Publication number Publication date
DE102015114161A1 (de) 2017-03-02
WO2017032727A1 (fr) 2017-03-02
EP3341297B1 (fr) 2019-04-24
US10696438B2 (en) 2020-06-30
US20180229878A1 (en) 2018-08-16

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