EP3177533B1 - Appareil pour emballer un produit avec un film extensible - Google Patents

Appareil pour emballer un produit avec un film extensible Download PDF

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Publication number
EP3177533B1
EP3177533B1 EP15771247.2A EP15771247A EP3177533B1 EP 3177533 B1 EP3177533 B1 EP 3177533B1 EP 15771247 A EP15771247 A EP 15771247A EP 3177533 B1 EP3177533 B1 EP 3177533B1
Authority
EP
European Patent Office
Prior art keywords
product
gripping element
film
tray
movable jaw
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
EP15771247.2A
Other languages
German (de)
English (en)
Other versions
EP3177533A1 (fr
Inventor
Angelo Cappi
Georgi Dimitrov Todorov
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.)
Anigma Consulting Sagl
Original Assignee
Anigma Consulting Sagl
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.)
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Publication date
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Publication of EP3177533A1 publication Critical patent/EP3177533A1/fr
Application granted granted Critical
Publication of EP3177533B1 publication Critical patent/EP3177533B1/fr
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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
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/06—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths
    • B65B11/08—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a single straight path
    • B65B11/10—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a single straight path to fold the wrappers in tubular form about contents
    • B65B11/12—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a single straight path to fold the wrappers in tubular form about contents and then to form closing folds of similar form at opposite ends of the tube
    • 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
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/54—Wrapping by causing the wrapper to embrace one end and all sides of the contents, and closing the wrapper onto the opposite end by forming regular or irregular pleats
    • 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
    • B65B25/00—Packaging other articles presenting special problems
    • B65B25/06—Packaging slices or specially-shaped pieces of meat, cheese, or other plastic or tacky products
    • 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
    • B65B41/00—Supplying or feeding container-forming sheets or wrapping material
    • B65B41/12—Feeding webs from rolls
    • B65B41/14—Feeding webs from rolls by grippers
    • 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
    • B65B45/00—Apparatus or devices for supporting or holding wrappers during wrapping operation
    • 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

Definitions

  • the present invention relates to an apparatus for wrapping with an extensible film a product, in particular a food product placed on a paper or expanded polystyrene tray or on a tray made of another suitable material, or also without a tray, to make a light package that leaves the product in view, wrapping the product completely with a film that is transparent and extensible, for example of film of plastics.
  • apparatuses are known e.g. from EP 0 890 508 A1 , for automatically packaging a product in an extensible film that subject the film to pre-stretching, before wrapping the film around the product to be packaged, to maximise the extendibility features of the film material.
  • the film is folded in a preset direction to be closed on the product. This does not enable the film to be adapted in all cases as well as possible to the shape of the product to be packaged and does not enable the quantity of film used in the packaging to be minimised.
  • the object of the present invention is to provide an apparatus for packaging a product with an extensible film that enables the film to be adapted as well as possible to the shape of the product to be packaged and the quantity of film used in packaging to be minimised.
  • the object of the present invention is achieved with an apparatus for packaging a product with an extensible film according to claim 1.
  • the apparatus according to the invention enables greater productivity to be obtained than with known prior-art apparatuses, packaging of loose products to be improved, i.e. products that do not rest on a tray.
  • the apparatus according to the invention is easy to make and permits a high level of hygiene during the product packaging steps.
  • FIGS 1 and 2 there is illustrated an apparatus 1 according to the invention for packaging a product P by means of an extensible film 3, for example a transparent film made of plastics, which is unwound from a reel 2.
  • an extensible film 3 for example a transparent film made of plastics, which is unwound from a reel 2.
  • the apparatus 1 comprises a conveying device 4 by means of which a product P to be packaged is inserted into the apparatus 1.
  • the conveying device 4 can be associated with a weighing device 5 in which the product P is weighed.
  • the conveying device 4 is further associated with measuring means (not shown) the purpose of which is to measure the width, the length, the maximum height, the average height and the shape of the product. These data are used to determine the movements of the various devices of the apparatus 1, which package the product P, and the quantity of film 3 to be used for packaging.
  • the conveying device 4 comprises a sliding surface 4a on which a product P to be packaged is slid, possibly placed on a tray V, for example a paper or expanded polystyrene tray.
  • the conveying device 4 comprises a first belt 6 wound on a first pair of pulleys 7 and a second belt 8 wound on a second pair of pulleys 9.
  • the first belt 6 and the second belt 8 are parallel to one another and are driven by a first motor 10.
  • the conveying device 4 conveys the product P to be packaged to a lifting device 11 that lifts the product P to bring the product P into contact with the extensible film 3, as will be disclosed in greater detail below.
  • An end portion 62 of the sliding surface 4a, opposite the weighing device 5, is provided with a plurality of protrusions 63 arranged in a slightly arched configuration, the purpose of which is to facilitate the transit of the product P from the conveying device 4 to the lifting device 11, avoiding possible blocking.
  • the lifting device 11 is driven by an actuator 13, which is suitable for moving the lifting device 11 in a direction that is substantially perpendicular to said sliding surface 4.
  • the extensible film 3, wound in the reel 2, is unwound from the latter by means of a first gripping element 14, which comprises a first fixed jaw 15 and a first movable jaw 16 by means of which the film 3 can be grasped.
  • the first movable jaw 16 is movable between an open position, in which it is at a distance from the first fixed jaw 15, and a closed position, visible in Figure 3 , in which it is in contact with the first fixed jaw 15.
  • the first fixed jaw 15 and the first movable jaw 16 have a width that is at least equal to the maximum width of the film 3 usable in the apparatus 1 according to the invention, so as to grasp the film over the entire width thereof when the first movable jaw 16 is in the closed position.
  • One end of the first movable jaw 16 is provided with a plurality of first teeth 24, arranged in a comb configuration.
  • the first movable jaw 16 is driven by a first cam element 17, driven by a first driving element 18, by a first arm 19.
  • the first driving element 18 is controlled by at least one linear actuator, advantageously by a pair of linear actuators 20, 21.
  • the first gripping element 14 is slid, along linear guides 22, by first driving means 23 that comprises a linear actuator. The sliding of the first gripping element 14 unwinds the film 3 from the reel 2 in an unwinding direction S parallel to the linear guides 22.
  • the extensible film 3 Whilst the extensible film 3 is unwound from the reel 2, it is guided on a first guide roller 25, a second guide roller 26 and a third guide roller 27.
  • a perforating element 28 is arranged, consisting for example of a serrated blade, intended for making a series of holes in the extensible film 3, in a direction that is substantially perpendicular to the unwinding direction S.
  • the perforating element 28 is driven by a second cam element 29 by a second arm 30 driven by the first driving element 18.
  • the first gripping element 14 is operationally associated with a second gripping element 31, having a structure that is similar to the structure of the first gripping element 14.
  • the second gripping element 31 in fact comprises a second fixed jaw 32 and a second movable jaw 33, with which the extensible film 3 can be grasped.
  • the second movable jaw 33 is movable between an open position, visible in Figure 5 , in which it is at a distance from the second fixed jaw 32, and a closed position, in which it is in contact with the second fixed jaw 33.
  • the second fixed jaw 32 and the second movable jaw 33 have a width that is at least equal to the maximum width of the film 3 usable in the apparatus 1 according to the invention, so as to grasp the entire width of the film, when the second movable jaw 33 is in the closed position.
  • One end of the second movable jaw 33 is provided with a plurality of second teeth 34, arranged in a comb configuration.
  • the second teeth 34 are arranged staggered with respect to the first teeth 24 of the first movable jaw, so that the teeth of the two jaws can be inserted into one another, when the two jaws are brought into contact, as will be explained in greater detail below.
  • the second movable jaw 33 is driven by a third cam element 35, in turn driven by a second driving element 36, by means of a third arm 37.
  • the second driving element 36 is controlled by at least one linear actuator 38, advantageously by a pair of linear actuators.
  • the second gripping element 31 is slid along the linear guides 22, by second driving means 39, which comprises a linear actuator.
  • the apparatus according to the invention further comprises a third gripping element 40 and a fourth gripping element 41 intended for performing transverse tensioning of the extensible film 3.
  • the third gripping element 40 and the fourth gripping element 41 are arranged so as to be able to grasp the opposite longitudinal edges 42 and 43 of the extensible film 3.
  • the third gripping element 40 comprises a third fixed jaw 44 and a third movable jaw 45, with which one of the longitudinal edges of the extensible film 3 can be grasped, for example the longitudinal edge 43.
  • the third movable jaw comprises a plurality of jaw sections 45a that are separate from one another ( Fig. 7 ).
  • the jaw sections 45a of the third movable jaw 45 are movable between an open position, visible in Figure 8 , in which they are at a distance from the third fixed jaw 44, and a closed position, in which they are in contact with the third fixed jaw 44.
  • the jaw sections 45a of the third movable jaw 45 are driven by a third driving element 46.
  • the third driving element 46 is controlled by at least one linear actuator, advantageously by a pair of linear actuators 47 and 48.
  • all the jaw sections 45a of the third movable jaw 45 are driven simultaneously. Nevertheless, it is possible to provide an independent drive for each jaw section 45a.
  • the fourth gripping element 41 comprises a fourth fixed jaw 49 and a fourth movable jaw 50, with which the other longitudinal edge of the extensible film 3 can be grasped, for example the longitudinal edge 42, opposite the longitudinal edge 43.
  • the fourth movable jaw 50 comprises a plurality of jaw sections that are separate from one another, which are not visible in the figures.
  • the jaw sections of the fourth movable jaw 50 are movable between an open position, visible in Figure 8 , in which they are at a distance from the fourth fixed jaw 49, and a closed position, in which they are in contact with the third fourth fixed jaw 49.
  • the jaw sections of the fourth movable jaw 50 are driven by a fourth driving element 51.
  • the fourth driving element 51 is controlled by at least one linear actuator, advantageously by a pair of linear actuators 52 and 53.
  • all the jaw sections of the fourth movable jaw 50 are driven simultaneously. Nevertheless, it is possible to provide an independent drive for each section of jaw.
  • the third gripping element 40 and the fourth gripping element 41 are slid along second linear guides 54 by respective third and fourth driving means 55 and 56.
  • the third and fourth driving means 55 and 56 comprise respective linear actuators.
  • the second linear guides 54 are oriented in a direction that is substantially perpendicular to the direction of the first linear guides 22.
  • the lifting device 11 is movable in a direction that is perpendicular to the sliding surface 4a between a lower position, visible, for example in Figures 1 , 2 , 4 and 6 , in which it is substantially aligned on said sliding surface 4a, and an upper position, in which the product P is packaged.
  • the motion of the lifting device 11 and that of the conveying device 4 are synchronised so that there is no downtime between the moment in which the lifting device 11 reaches the lower position and the moment in which a product P is pushed by one of the pushing elements 12, 12a onto the lifting device 11.
  • the lifting device 11 is provided with a plurality of parallel grooves 57, oriented in a direction parallel to said unwinding direction S and sized in such a manner that the first teeth 24 of the first movable jaw 16 of the first gripping element 14 and the second teeth 34 of the second movable jaw 33 of the second gripping element 31 can be inserted into said grooves 57, as will be explained in greater detail below.
  • the apparatus 1 further comprises a further pushing element 58, placed above the gripping elements 14, 31, 40 and 41, at a short distance therefrom.
  • the further pushing element 58 is driven by a pair of belts 59 driven by a second motor 60, so as to slide in a direction parallel to the second linear guides 54 to push the packaged product P onto an evacuating conveyor 61, by means of which the packaged product P is evacuated from the apparatus 1.
  • the evacuating conveyor 61 comprises a motor-driven band 62 made of a heat-resistant material, for example Teflon, which is heated by heating means, for example electrical resistances, for welding the film 3 wrapped around the product P, to complete packaging, as will be explained in greater detail below.
  • a motor-driven band 62 made of a heat-resistant material, for example Teflon, which is heated by heating means, for example electrical resistances, for welding the film 3 wrapped around the product P, to complete packaging, as will be explained in greater detail below.
  • a product P to be packaged is placed on the weighing device 5 associated with the conveying device 4 and is weighed.
  • the conveying device 4 After weighing has been performed, the conveying device 4 is driven so that one of the two pushing elements 12 pushes the product P along the conveying surface 4a to the lifting device 11 which is moving to its lower position. In order to avoid downtime in the transit of the product P from the conveying device 4 to the lifting device 11, the conveying device 4 is synchronised with the lifting device 11, so that the product P is unloaded onto the lifting device 11 when the latter reaches its lower position, as shown in Figure 4 .
  • a plurality of measuring sensors is associated that, whilst the product P is weighed and moved along the conveying surface 4a, detect the width, length, maximum height, average height and shape of the product.
  • These data combined with the dimensions of the reel 2, the features of the extensible film 3 and the type of the product (resistant product, light product, presence or absence of the tray V), are used to determine the movements of the elements of the apparatus 1 and the synchronisation thereof, for example the movements of the gripping elements 14, 31, 40 and 41, opening and closing of the movable jaws 16, 33, 45, 50, the movements of the lifting device 11, etc.
  • the machine is thus completely automatic and is suitable both for all types of product P and of extensible film 3.
  • the first movable jaw 16 of the first gripping element 14 Whilst the product P is conveyed to the lifting device 11, the first movable jaw 16 of the first gripping element 14 is moved to a closed position and grasps a free end of the extensible film 3, whereas the first gripping element 14 starts to move in the unwinding direction S, unwinding the extensible film 3 from the reel 2.
  • the first gripping element 14 moves in the unwinding direction S until the first teeth 24 of the first movable jaw 16 are inserted into the second teeth 34 of the second movable jaw 33 of the second gripping element 31.
  • the position of the second gripping element depends on the dimension of the product to be packaged, measured in the unwinding direction S.
  • the second movable jaw 33 closes, whilst the first movable jaw 16 opens, so that the extensible film 3 is retained by the second gripping element 31, which is moved in the unwinding direction S so as to unwind further the extensible film 3 from the reel 2, until a final position is reached that depends on the dimension of the product to be packaged, measured in the unwinding direction S.
  • the quantity of extensible film 3 that is unwound from the reel 2 is defined by the movement of the second gripping element 31 in the unwinding direction S, i.e. by the final position of said second gripping element 31 at the end of said movement. Whilst the second gripping element 31 moves in the unwinding direction S, the first gripping element 14 moves back to a preset position that itself depends on the dimension of the product to be packaged, measured in the unwinding direction S.
  • the perforating element 28 can make a series of holes in the extensible film 3, in a direction that is substantially perpendicular to the unwinding direction S. This operation can, however, also be performed in a subsequent packaging step of the product P.
  • the third gripping element 40 and the fourth gripping element 41 are advanced, by being slid along the second linear guides 54, until they reach a position in which they can grasp the side edges 42 and 43 of the extensible film 3.
  • the closure of the third movable jaw 45 and of the fourth movable jaw 50 is commanded so that the jaw sections of both jaws clamp the extensible film 3 against the third fixed jaw 44 and the fourth fixed jaw 49. It should be noted that not all the jaw sections of the third movable jaw 45 and of the fourth movable jaw 50 clamp the extensible film 3.
  • the distance between the first gripping element 14 and the second gripping element 31, which depends on the dimensions of the product P in the unwinding direction S, can be less than the cross sections of the movable jaws 45 and 50.
  • the outermost sections of the movable jaw interfere, by closing, with the first gripping element 14 and the second gripping element 31 without being able to clamp the film 3, which remains clamped between the sections of movable jaw of the third movable jaw 45 and of the fourth movable jaw 50 comprised in the space between the first gripping element 14 and the second gripping element 31.
  • the third gripping element 40 and the fourth gripping element 41 after clamping the longitudinal edges 42 and 43 of the extensible film 3 are retracted to tension the extensible film 3, whilst the product P is lifted by the lifting device 11 and comes into contact with the extensible film 3 which, whilst the lifting device continues to rise, is arranged on the upper part of the product P, as can be seen in Figure 11 .
  • the first gripping element 14 and the second gripping element 31 can move towards one another to avoid excessive tensions in the extensible film 3 and to limit the pressure of the film on the product P, in particular in the case of a soft product P.
  • first gripping element 14 and the second gripping element 31 are advanced to place two flaps 65 of film under the product P, or the tray V.
  • the first gripping element 14 and the second gripping element 1 are advanced until the first teeth 24 of the first gripping element 14 are inserted between the second teeth 34 of the second gripping element 31.
  • the flaps 65 of film will be superimposed for a short portion D.
  • the flaps 65 can be superimposed in a central position in relation to the product P, or to the tray V, as shown in Figure 19 , or in a decentred position, towards the end of the product P nearest the second gripping element 31, as illustrated in Figure 21 .
  • Superimposing the further flaps 65 in said decentred position enables the stroke of the second gripping element 31 to be reduced, thus advantageously limiting the dimensions of the apparatus in the unwinding direction S.
  • the series of holes made in the extensible film 3 by the perforating element 28 is at the teeth 24 of the first gripping element 14.
  • the second movable jaw 33 of the second gripping element 31 is opened, whilst the first movable jaw 16 of the first gripping element 14 is taken to the closed position to tear the extensible film 3, separating the portion of extensible film 3 wrapped around the product P from the rest of the film.
  • Moving the first gripping element 14 before closure of the first movable jaw 16 determines the quantity of extensible film 3 that is used in packaging the product P.
  • the third gripping element 40 and the fourth gripping element 41 move underneath the product P, or the tray V, to each take a further flap 64 of film ( Figure 20 ) underneath the product P.
  • the further flaps 64 of film remain at a distance from one another other, the length of each further flap 64 of film being chosen in such a manner that the flap can remain adhering to the product P or to the tray V after being released by the third gripping element 40 and by the fourth gripping element 41.
  • the gripping elements 40, 41 are extracted from underneath the product P, or the tray V, releasing the flaps 64 of film, which remain adhering to the product P, or to the tray V.
  • the gripping elements 14, 31 are extracted from underneath the product P, or the tray V, the flaps 65 of film remaining adhering to the product P, or to the tray V.
  • the first gripping element 14 and the second gripping element 31 then both move in the unwinding direction S to unwind a portion of film 3 intended for packaging a subsequent product P.
  • the further pushing element 58 is driven that pushes the product P, with the possible tray V, on the motor-driven band 62 of the evacuating conveyor 61.
  • the evacuating conveyor 61 conveys the packaged product P out of the apparatus 1 according to the invention and, simultaneously, through the effect of heating the motor-driven band 62, the further flaps 64 of film and the flaps 65 of film are welded together to form a closed casing of extensible film 3 around the product P, thus completing packaging thereof.
  • the first gripping element 14 and the second gripping element 31 take two flaps 66 of film underneath the product P, or the tray V, that have a sufficient length to ensure the adhesion thereof to the product P, or to the tray V, when they are released by the first gripping element 14 and by the second gripping element 31.
  • the third gripping element 40 and the fourth gripping element 41 take underneath the product P, or underneath the tray V, two further flaps 67 of film, superimposing the flaps for a portion D', so as to complete wrapping of the product P.
  • the product P is pushed onto the evacuating conveyor 61, as explained previously.
  • the different methods disclosed for closing the extensible film make the apparatus 1 according to the invention very versatile and able to adapt easily to any shape of the product P.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)

Claims (16)

  1. Appareil (1) pour emballer un produit (P) avec un film extensible (3), comprenant des moyens de transport (4) pour transporter un produit (P) dans l'appareil (1), des moyens d'évacuation (61) pour évacuer le produit (P) à partir de l'appareil (1) à la fin de l'emballage, des moyens de déroulement (14, 31) pour dérouler le film extensible (3) à partir d'une bobine (2) montée sur l'appareil (1), des moyens tendeurs (40, 41) pour tendre ledit film extensible (3), un dispositif de levage (11) destiné à recevoir le produit (P) provenant desdits moyens de transport (4) et lever le produit pour mettre le produit en contact avec ledit film extensible (3), lesdits moyens de déroulement (14, 31) comprenant un premier élément de saisie (14) et un deuxième élément de saisie (31) qui sont mobiles indépendamment l'un de l'autre dans une direction de déroulement (S) pour dérouler le film extensible (3) à partir de la bobine (2), ledit premier élément de saisie (14) comprenant une première mâchoire fixe (15) et une première mâchoire mobile (16), une extrémité de la première mâchoire mobile (16) étant pourvue d'une pluralité de premières dents (24), agencées dans une configuration en peigne, ledit deuxième élément de saisie (31) comprenant une deuxième mâchoire fixe (32) et une deuxième mâchoire mobile (33), une extrémité de la deuxième mâchoire mobile (33) étant pourvue d'une pluralité de secondes dents (34), agencées dans une configuration en peigne, caractérisé en ce que ledit dispositif de levage (11) est pourvu d'une pluralité de rainures parallèles (57), orientées dans une direction parallèle à ladite direction de déroulement (S) et dimensionnées de telle manière que les premières dents (24) de la première mâchoire mobile (16) dudit premier élément de saisie (14) et les secondes dents (34) de la deuxième mâchoire mobile (33) dudit deuxième élément de saisie (31) puissent être insérées dans lesdites rainures (57).
  2. Appareil (1) selon la revendication 1, dans lequel lesdits moyens tendeurs (40, 41) comprennent un troisième élément de saisie (40) et un quatrième élément de saisie (41) qui sont mobiles indépendamment l'un de l'autre dans une direction qui est perpendiculaire à ladite direction de déroulement (S).
  3. Appareil (1) selon la revendication 2, dans lequel lesdites premières dents (24) et lesdites secondes dents (34) sont agencées décalées les unes par rapport aux autres, de manière à pouvoir être insérées les unes dans les autres, lorsque ladite première mâchoire mobile (16) et ladite deuxième mâchoire mobile (33) sont mises en contact l'une avec l'autre.
  4. Appareil (1) selon l'une quelconque des revendications 2 à 3, dans lequel ledit troisième élément de saisie (40) comprend une troisième mâchoire fixe (44) et une troisième mâchoire mobile (45), ladite troisième mâchoire mobile (45) comprenant une pluralité de sections (45a) qui sont séparées les unes des autres.
  5. Appareil (1) selon l'une quelconque des revendications 2 à 4, dans lequel ledit quatrième élément de saisie (41) comprend une quatrième mâchoire fixe (49) et une quatrième mâchoire mobile (50), ladite quatrième mâchoire mobile (50) comprenant une pluralité de sections qui sont séparées les unes des autres.
  6. Appareil (1) selon l'une quelconque des revendications précédentes, dans lequel lesdits moyens de transport comprennent un dispositif de transport (4) comprenant une surface de glissement (4a) sur laquelle un produit (P) devant être emballé peut glisser et deux éléments de poussée (12) dont chacun est entraîné par une première courroie (6) et par une seconde courroie (8) mise en mouvement par un premier moteur (10).
  7. Appareil (1) selon l'une quelconque des revendications précédentes, dans lequel lesdits moyens de transport (4) sont associés à des moyens de pesage (5).
  8. Appareil (1) selon la revendication 6 ou 7, dans lequel une portion d'extrémité (62) de ladite surface de glissement (4a) est pourvue d'une pluralité de saillies (63) agencées dans une configuration légèrement en arc.
  9. Appareil (1) selon l'une quelconque des revendications précédentes, dans lequel lesdits moyens d'évacuation (61) comprennent une bande entraînée par moteur (62) faite d'un matériau résistant à la chaleur, ladite bande entraînée par moteur (62) étant chauffée par des moyens de chauffage.
  10. Appareil (1) selon la revendication 9, comprenant en outre un élément de poussée supplémentaire (58) destiné à pousser un produit (P) emballé sur ladite bande entraînée par moteur (62).
  11. Appareil (1) selon l'une quelconque des revendications précédentes, dans lequel les mouvements du deuxième élément de saisie (31) et du premier élément de saisie (14), pendant l'emballage dudit produit (P), déterminent respectivement la quantité de film extensible (3) qui est déroulée à partir de la bobine (2) pour ladite opération d'emballage et la quantité de film extensible (3) qui est utilisée dans ladite opération d'emballage.
  12. Procédé pour emballer un produit (P) avec un film extensible (3), comprenant :
    - dérouler une portion du film extensible (3) à partir d'une bobine (2) par un premier élément de saisie (14) et un deuxième élément de saisie (31), ladite portion ayant une longueur dépendant des dimensions du produit (P) devant être emballé ;
    - tendre ledit film extensible en saisissant des bords opposés dudit film extensible par un troisième élément de saisie (40) et un quatrième élément de saisie (41) ;
    - placer ledit produit (P), ou un plateau (V) contenant le produit (P) sur un dispositif de levage (11) ;
    - mettre ledit produit (P) en contact avec une face inférieure dudit film extensible (3) au moyen d'un dispositif de levage (11), faire monter ledit dispositif de levage (11) jusqu'à ce que la partie inférieure du produit (P), ou du plateau (V), atteigne le niveau desdits éléments de saisie (14 ; 31 ; 40 ; 41), caractérisé par :
    - amener deux rabats (65 ; 66) de film maintenus par le premier élément de saisie (14) et par le deuxième élément de saisie (31) sous la partie inférieure du produit (P), ou du plateau (V), insérer le premier élément de saisie (14) et le deuxième élément de saisie (31) entre ledit dispositif de levage (11) et le produit (P), ou le plateau (V), de sorte qu'ils supportent le produit (P), ou le plateau (V), lesdits rabats (65 ; 66) étant pressés contre la partie inférieure du produit (P), ou du plateau (V), de manière à adhérer à ladite partie inférieure ou audit plateau (V) ;
    - amener deux rabats supplémentaires (64 ; 67) de film maintenus par le troisième élément de saisie (40) et par le quatrième élément de saisie (41) sous la partie inférieure du produit (P), ou du plateau (V), insérer le troisième élément de saisie (40) et le quatrième élément de saisie (41) sous le produit (P), ou le plateau (V), lesdits rabats supplémentaires (64 ; 67) étant pressés contre la partie inférieure du produit (P), ou du plateau (V), de manière à adhérer à ladite partie inférieure ou audit plateau (V).
  13. Procédé selon la revendication 12, comprenant en outre la superposition l'un sur l'autre desdits rabats (65) de film pour une portion (D) dans une position qui est centrale au produit (P), ou au plateau (V).
  14. Procédé selon la revendication 12, comprenant en outre la superposition l'un sur l'autre desdits rabats (65) de film pour une portion (D) dans une position qui est décentrée par rapport au produit (P), ou au plateau (V).
  15. Procédé selon la revendication 12, comprenant en outre la superposition l'un sur l'autre desdits rabats supplémentaires (67) pour une portion (D').
  16. Procédé selon l'une quelconque des revendications 12 à 15, comprenant en outre la superposition desdits rabats supplémentaires (64, 67) sur lesdits rabats (65 ; 66) et souder ensemble lesdits rabats (65 ; 66) et lesdits rabats supplémentaires (64 ; 67).
EP15771247.2A 2014-08-07 2015-07-31 Appareil pour emballer un produit avec un film extensible Active EP3177533B1 (fr)

Applications Claiming Priority (2)

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ITMO20140234 2014-08-07
PCT/IB2015/055808 WO2016020810A1 (fr) 2014-08-07 2015-07-31 Appareil pour emballer un produit à l'aide d'un film extensible

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US20210253283A1 (en) * 2018-09-04 2021-08-19 Deltapak S.R.L. Packaging machine and product packaging method
US11685568B2 (en) * 2021-03-22 2023-06-27 Infinity Machine & Engineering Corp. Adjustable packaging machine

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WO2016020810A1 (fr) 2016-02-11
US20170217611A1 (en) 2017-08-03

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