EP2719629A2 - Machine de hotte d'extraction améliorée avec remplacement de bobine automatique - Google Patents

Machine de hotte d'extraction améliorée avec remplacement de bobine automatique Download PDF

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Publication number
EP2719629A2
EP2719629A2 EP13187979.3A EP13187979A EP2719629A2 EP 2719629 A2 EP2719629 A2 EP 2719629A2 EP 13187979 A EP13187979 A EP 13187979A EP 2719629 A2 EP2719629 A2 EP 2719629A2
Authority
EP
European Patent Office
Prior art keywords
carriage
machine
reel
gripping
guiding
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.)
Withdrawn
Application number
EP13187979.3A
Other languages
German (de)
English (en)
Other versions
EP2719629A3 (fr
Inventor
Franco Tacchini
Maurizio Orfano
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.)
Officina Meccanica Sestese SpA
Original Assignee
Officina Meccanica Sestese SpA
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 Officina Meccanica Sestese SpA filed Critical Officina Meccanica Sestese SpA
Publication of EP2719629A2 publication Critical patent/EP2719629A2/fr
Publication of EP2719629A3 publication Critical patent/EP2719629A3/fr
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • 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
    • B65B59/003—Arrangements to enable adjustments related to the packaging material
    • 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
    • B65B2210/00—Specific aspects of the packaging machine
    • B65B2210/02—Plurality of alternative input or output lines or plurality of alternative packaging units on the same packaging line for improving machine flexibility

Definitions

  • the present invention relates to a wrapping machine with extensible or heat-shrinking film, in particular an hooding machine.
  • This type of machine provides to the wrapping of generally pallet-mounted loads with a tubular sheet of plastic material.
  • hooding machines The general principle of hooding machines is the following.
  • a pallet-arranged load is brought in correspondence of a wrapping position, in the middie of a wrapping machine frame where it is covered by a sleeve of plastic material which is tightened around the load, either by elastic shrinking of the extensible material, or by heating of the heat-shrinking material.
  • the sleeve is formed starting from a tubular sheet which is folded flat, concertina-like, in a feeding reel which is normally supported with a horizontal axis next to the hooding machine.
  • the tubular sheet during the feeding step from the corresponding reel, is firstly cut to measure, sealed and welded at one end, leaving the other end open to form the "sleeve"; then it is grabbed by this open end and brought - after having possibly spread it apart - over the entire load.
  • the initial force-fitting step does not cause problems because the tubular section of the film is rather wide and is applied effortlessly onto the load; the final step of the wrapping then consists in the tightened closing of the sleeve on the load, which is carried out subjecting the wrapping film to shrinking as an effect of heat supply.
  • the sleeve force-fitting step is preceded by a stretching step in a crosswise direction and of temporary spreading apart the sleeve which, in the final wrapping step, due to the elastic effect, returns into its initial condition and hence automatically tightens around the load.
  • the welding and cutting station is arranged in the upper part of the frame, above the load wrapping area, but sometimes it is instead located in the proximity of the base (as in cited EP'893).
  • the hooding machine furthermore provides a dragging device (apt to transfer the edge of the tubular portion along the running path of the sleeve) which is mounted moving on the machine frame.
  • the reel of tubular material is comfortably housed in the lower part, beside the machine. This is also in order to allow simple access by the operator who must intervene when a replacement of the supply reel is necessary due to the running out thereof or due to size change of the load to be wrapped.
  • the reel replacement operation is in any case awkward, both due to the relative complexity of the replacement operation - which implies opening the gripping, cutting and welding device to remove the initial edge of an empty, in any case not usable reel, and reintroducing the initial edge of a new reel - and due to the position where said operation is carried out, which is often in the upper part of the machine, therefore forcing the operator to work in dangerous positions.
  • This arrangement has a series of advantages, which make the machine more flexible with respect to the conventional ones with a single reel inserted in the upper part of the machine.
  • the problem at the base of the invention is hence to provide an hooding machine structure of the above-cited type which overcomes the described drawbacks. It is hence desired to provide a machine which admits a very quick, operator-friendly reel replacement which does not cause prolonged idle times.
  • a hooding machine for the wrapping of loads comprising a support frame whereon a plastic sleeve-forming system is arranged, said sleeve being formed starting from a plastic tubular sheet folded on a plane and wound on a feeding reel, said forming system comprising, in the proximity of the machine base, dragging means apt to grab a terminal edge of said tubular sheet and to drag it along a sleeve-forming path, wherein at least a movable carriage on which at least a feeding reel of said tubular sheet is mounted is furthermore provided, said carriage having gripping or retaining means arranged as to present a terminal edge of said plastic sheet at a preset position with respect to said carriage, and said gripping or retaining means are located in a lower cantilevedered part of said carriage, and at least guiding and control means for guiding said carriage are furthermore provided, apt to locate said gripping or retaining means at a side of the hooding machine in
  • said carriage comprises a support platform, having a first main part housing supporting means for one or more reels and a second cantilevered part on which said gripping or retaining means are installed, one for each reel.
  • guiding and control means define a displacement path of the at least one carriage which extends at least partly according to an axis parallel to the longitudinal transport axis of the machine.
  • guiding and control means also comprise driving means provided with motorisation.
  • a single device driving the rotation of the one reel of the plurality of reels being fed is furthermore provided.
  • said single driving device consists of an arm, mounted with an end thereof pivoting around a pin and projecting from said support frame towards a respective reel, said arm in turn carrying, at the free end thereof, a motorization for a rubber roller which drives said reel into rotation by friction.
  • each carriage carries a plurality of reels with parallel rotation axes.
  • multiple carriages are provided, movable independently through the same guiding and control means.
  • an hooding machine comprises, in a way known per se, a main post 1 of a support frame (not better shown overall, being of a type widely known per se), at the top of which delivery and force-fitting means of a plastic sleeve on a load to be wrapped are provided.
  • a feeding reel 3 of a sheet F of flattened, tubular plastic material is arranged.
  • control means of the rotation of reel 3 are furthermore arranged, consisting of an arm 4, mounted with one end thereof pivoting around a pin 4a and carrying at the other free end thereof a motorisation 5 for a roller 6, which roller rests on the periphery of reel 3 and controls the rotation thereof by friction.
  • the sheet F fed by reel 3 firstly runs through a tensioning device 7 and subsequently on a transfer device 8 guiding toward a gripping frame 9 of the tubular sleeve.
  • a gripping system (not shown) of dragging means meant to collect the free edge of sheet F and to bring it along the sleeve-forming path is provided.
  • a segment intended to form the sleeve of tubular sheet is dragged upwards, along post 1, then horizontally along a crossmember 10a, finally deviated downwards by a spreading-apart device 11, for the opening and the forming of an open sleeve.
  • a cutting and welding device may also be mounted, should the sleeve be formed below, on the lateral side of the machine.
  • the cutting and welding device is arranged in some other location along the sleeve-forming path, for example in the top part of the machine.
  • This device too, is not described and shown in detail, since it does not belong to the present invention; it must also be pointed out that it comprises welding means for welding the two overlapping edges of film sheet F, one on top of the other, as well as cutting means, for severing an initial edge of sheet F from a final end of the remaining part of the sheet, that is, a sheet segment which, thus closed below, forms, during the feeding thereof, a bag or sleeve for the subsequent hooding operation of the load.
  • Each one of devices 7 and 8 is diagrammatically shown by a series of cylinders which are not described in further detail since they are known per se.
  • reel 3 and the transfer devices 7 and 8 thereof are mounted on a moving carriage 2, which will be described in further detail further on.
  • downstream of transfer means 8, gripping or retaining means 8a are provided, the function of which is to hold the initial edge of sheet F and to present it to the gripping system of the dragging means which, in the suitable work step, intervene and grip the sheet F it to drag it to and beyond the cutting and welding device.
  • retaining or gripping means 8a are mounted integral in movement with carriage 2, on which one or more reels are supported. Further, retaining or gripping means 8a are located on the lower part of the carriage, at leats below the level of reel axis.
  • means 8a are supported on a cantilevered portion 2b of carriage 2, in turn mounted moving on a preferably preset and fixed path, on the side of the hooding machine, as will be described further on.
  • movable carriage 2 comprises an elongated support platform, consisting of a main support part 2a - under which, for example, moving wheels are installed - and of a cantilevered auxiliary part 2b.
  • Main part 2a carries a fork 2c supporting a shaft 3' of a reel 3 of plastic film F.
  • Cantilevered part 2b extends laterally to support the cited transfer device 8 of sheet F and gripping or retaining means 8a.
  • a first embodiment provides that carriage 2 accommodates a plurality of support stations of the feeding reels and, more precisely, three reel stations 3a, 3b and 3c with parallel rotation axes.
  • the elongated platform 2a, 2b of the same carriage 2 extends to each one of these reels 3a, 3b and 3c; gripping and retaining means 8a are provided for each reel, one opposite each one thereof; on the other hand, alternatively, each one of the three reels can be caused to rotate by the only drive mechanism 4,5,6 associated with frame 1.
  • the three reels 3a-3c may be identical and fully replaceable, or they may be of different sizes or types, i.e. carrying tubular sheets with features suited for the wrapping of different loads. What is important, for the purposes of good accessibility by operators, is that the distance between the reel support stations is sufficient to enable an operator to stay in front of the ones not engaged in the feeding activity.
  • the reels supported on carriage 2 only one is meant to deliver plastic film to the hooding machine, that is, the one arranged in correspondence of frame 9 and of the dragging means thereof.
  • This reel which is the only one working at a certain moment, is driven into rotation by the only driving device associated with arm 4.
  • the adjacent reels remain temporarily unused. That allows to work on the unused stations of the same carriage 2 to replace the corresponding reels without interfering with the regular operation of the machine.
  • Carriage 2 is mounted sliding on a rail 12 running close to the hooding machine.
  • the rail 12 is preferably arranged according to an axis Y-Y running parallel to the longitudinal transport axis X-X of the wrapping machine.
  • the movement of carriage 2 along rail 12 is driven by a drive unit 13 which uses for example an end-less dragging chain 13a.
  • the three reels 3 are mounted on carriage 2 at a mutual distance - in the direction of axis Y-Y - it is possible to replace an exhausted reel, for example reel 3a or 3c, while it is in a position away from frame 9 (as shown in fig. 2 ), when another reel, in this case reel 3b, is instead opposite said frame 9, for the feeding in progress of respective sheet F.
  • This arrangement hence accomplishes the fundamental advantage of the present invention, connected precisely to the fact that the replacement of an exhausted reel with a new one - that is, the replacement of a reel of one type with another one of a different type - occurs in a position in which the exhausted reel is found away from frame 1 and from the dragging means thereof and it is hence easily accessible without interfering with the regular delivery of the work reel.
  • the advantage lies in the fact that, in this position, the operator can work freely from above to cause sheet F of the replaced reel to run through assemblies 7 and 8 and to fasten the initial end thereof on the gripping means 8a associated with respective assembly 8, with no interference with the work under way with another reel.
  • the operator can load a reel on one of the stations of carriage 2 which is not engaged working opposite the hooding machine. Since the cantilevered part 2b of the carriage, with the relative gripping and retaining means 8a, is freely accessible from above, the operator can easily introduce the free edge of film F into the various transfer cylinders 7 and 8 and arrange it in a preset position of the carriage defined by gripping and retaining means 8a. During this action it is not necessary to halt the operation of the hooding machine.
  • Retaining or gripping means 8a are laid out so that film F comes from below along cylinders 8 and is presented with the free edge thereof vertically facing upwards. Thereby, the edge or end of film F can be easily grabbed by further gripping means which come from above, that is, from the gripping system of the dragging means hosted on the hooding machine.
  • carriage 2 is also moved through moving control 13 and 13a.
  • the desired reel is brought opposite the hooding machine, bringing gripping and retaining means 8a below and flush to the frame 9 of the hooding machine.
  • suitable reference system known per se, it is hence possible to perfectly arrange the free edge of film F in correspondence of the location where the dragging means are apt to grip it from above and to bring it along the sleeve-forming path of the machine.
  • arm 4 is caused to drop until bringing rubber roller 6 to rest against the reel periphery, so as to control the unwinding/winding thereof.
  • the action of motor 5 is synchronised with that of the dragging means: depending on the torque delhivered to the motor, it alternatively cooperates to deliver the plastic sheet F (unwinding) or it maintains the correct film tension between gripping or retaining means 8a and transfer means 7 (winding), so as not to create excessive slack which could lead to jamming.
  • Fig. 3 shows an alternative embodiment. Here it is provided, in order to further facilitate the replacement work of reels 3, to have two separate carriages 15 and 16, independently slidable along rail 12. In the case shown, each one of the two carriages carries a pair of reels 3d, 3e and 3f, 3g, respectively.
  • first carriage in working station in the case shown, carriage 15, with reel 3e in a feeding step of sheet F and with reel 3d ready and waiting for replacement.
  • second carriage, in the case shown carriage 16 remains stationary in a position away from the working station, where it can easily be provided to reel replacement or to other maintenance operations.
  • carriages 15 and 16 may be engaged and disengaged according to the requirements, to the end-less moving chain 13a of drive system 13.
  • reel support carriages may be moved also in other ways, possibly also manually.
  • the carriages may be movably mounted on the respective guiding means in various ways, not necessarily through wheels and rails.
  • the carriages may be fixedly mounted on a revolving structure, which in turn is rotatingly driven on a vertical axis.
  • Each reel may furthermore be mounted on an own, independent carriage, or a single carriage with a number of reels even exceeding three may be provided.
  • retaining or gripping means 8a may be configured to have the terminal edge of film F with a different attitude from the one shown in the drawings, depending on how the gripping system of the dragging means is meant to work.
  • the edge may be presented on an oblique, rather than a vertical, or nearly horizontal, plane.
  • Retaining or gripping means 8a are provided opposite each reel to manage the individual terminal edges of film F independently, but that does not imply from a that construction point of view there are as many separate devices as are the reels, because retaining or gripping means 8a may also be part of a single complex unit.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Packaging Of Special Articles (AREA)
  • Replacement Of Web Rolls (AREA)
EP13187979.3A 2012-10-09 2013-10-09 Machine de hotte d'extraction améliorée avec remplacement de bobine automatique Withdrawn EP2719629A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT001689A ITMI20121689A1 (it) 2012-10-09 2012-10-09 Macchina d'imballaggio incappucciatrice perfezionata, con cambio automatico delle bobine.

Publications (2)

Publication Number Publication Date
EP2719629A2 true EP2719629A2 (fr) 2014-04-16
EP2719629A3 EP2719629A3 (fr) 2014-07-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP13187979.3A Withdrawn EP2719629A3 (fr) 2012-10-09 2013-10-09 Machine de hotte d'extraction améliorée avec remplacement de bobine automatique

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EP (1) EP2719629A3 (fr)
IT (1) ITMI20121689A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2993134A1 (fr) 2014-09-05 2016-03-09 OFFICINA MECCANICA SESTESE S.p.A. Machine de hotte d'extraction
IT201900001197A1 (it) * 2019-01-28 2020-07-28 Messersi Packaging Srl Macchina incappucciatrice con cambio film

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8519247U1 (de) 1985-07-03 1987-04-02 Hans Lingl Anlagenbau Und Verfahrenstechnik Gmbh & Co Kg, 7910 Neu-Ulm Vorrichtung zum Überziehen von Gutstapeln mit einer Haube aus wärmeschrumpffähigem Kunststoff
EP1086893A2 (fr) 1999-09-23 2001-03-28 Officina Meccanica Sestese S.p.A. Dispositif compact et reductible combiné pour emballer à l'aide d'un manchon plastique

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20031674A1 (it) * 2003-08-28 2005-02-28 Sestese Off Mec Procedimento ed apparecchiatura per realizzare un
FR2867452B1 (fr) * 2004-03-11 2007-06-01 Thimon Procede et dispositif de mise en forme et de depose a haute cadence d'une housse d'emballage sur une charge palettisee.
FR2967648B1 (fr) * 2010-11-22 2012-12-07 Thimon Procede et machine d'emballage par robot d'une charge palettisee au moyen d'une housse en matiere plastique souple

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8519247U1 (de) 1985-07-03 1987-04-02 Hans Lingl Anlagenbau Und Verfahrenstechnik Gmbh & Co Kg, 7910 Neu-Ulm Vorrichtung zum Überziehen von Gutstapeln mit einer Haube aus wärmeschrumpffähigem Kunststoff
EP1086893A2 (fr) 1999-09-23 2001-03-28 Officina Meccanica Sestese S.p.A. Dispositif compact et reductible combiné pour emballer à l'aide d'un manchon plastique

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2993134A1 (fr) 2014-09-05 2016-03-09 OFFICINA MECCANICA SESTESE S.p.A. Machine de hotte d'extraction
IT201900001197A1 (it) * 2019-01-28 2020-07-28 Messersi Packaging Srl Macchina incappucciatrice con cambio film
EP3686111A1 (fr) * 2019-01-28 2020-07-29 Messersì Packaging S.R.L. Housseuse avec système de changement de film

Also Published As

Publication number Publication date
EP2719629A3 (fr) 2014-07-09
ITMI20121689A1 (it) 2014-04-10

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