EP3186153B1 - Appareil de production de paquets de produits d'infusion - Google Patents

Appareil de production de paquets de produits d'infusion Download PDF

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Publication number
EP3186153B1
EP3186153B1 EP15748172.2A EP15748172A EP3186153B1 EP 3186153 B1 EP3186153 B1 EP 3186153B1 EP 15748172 A EP15748172 A EP 15748172A EP 3186153 B1 EP3186153 B1 EP 3186153B1
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EP
European Patent Office
Prior art keywords
folding
forming
bag
carousel
group
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.)
Not-in-force
Application number
EP15748172.2A
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German (de)
English (en)
Other versions
EP3186153A1 (fr
Inventor
Mario Spatafora
Daniele Coi
Giacomo Noferini
Stefano Nanni
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.)
Azionaria Costruzioni Macchine Automatiche ACMA SpA
Original Assignee
Azionaria Costruzioni Macchine Automatiche ACMA SpA
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Publication of EP3186153A1 publication Critical patent/EP3186153A1/fr
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Publication of EP3186153B1 publication Critical patent/EP3186153B1/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
    • B65B29/00—Packaging of materials presenting special problems
    • B65B29/02—Packaging of substances, e.g. tea, which are intended to be infused in the package
    • B65B29/04—Attaching, or forming and attaching, string handles or tags to tea bags
    • 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
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
    • B65B61/06—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting
    • 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
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
    • B65B61/06—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting
    • B65B61/065—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting by punching out
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
    • B65D85/804—Disposable containers or packages with contents which are mixed, infused or dissolved in situ, i.e. without having been previously removed from the package
    • B65D85/808—Disposable containers or packages with contents which are mixed, infused or dissolved in situ, i.e. without having been previously removed from the package for immersion in the liquid to release part or all of their contents, e.g. tea bags

Definitions

  • the present invention relates to an apparatus for producing packages of infusion products, in particular tea and similar products.
  • Apparatuses for packaging infusion products are known. These products are usually contained in dosed amounts inside specific bags of material permeable to liquids, usually called "filters".
  • the packaging of these products usually comprises the application of a specific tag, normally made of paper, attached to the filter by means of a suitable length of thread, to allow the handling of the product.
  • the packaging of infusion products envisages a protective envelope wrapped around the single filter-bag and a packet, for example made of cardboard, in which a plurality of protective envelopes containing the single filter-bags is inserted.
  • Automatic packaging lines are known for packaging these products, in which a plurality of operative groups is suitable for effecting the various packaging operations in a coordinated manner: feeding a dosed quantity of product on a strip made of permeable material, unwound from a respective reel, forming the single filter-bag containing the dosed amount of product, closing the filter-bag, feeding a strip of material for tags, unwound from a further respective reel, separation of the single tags from the above strip, feeding and cutting the joining thread to size, joining each tag and each bag to the respective ends of a cut length of thread, forming single protection envelopes around the bags joined to the tag, packaging in cardboard boxes.
  • Patent EP 1384665 describes an apparatus for producing filter-bags containing an infusion product, comprising a group for preparing and feeding the materials used for producing filter-bags, among which a strip of filter-paper, a dosing group, suitable for positioning doses of infusion product on the strip of filter-paper, a formation group, a dividing group and a cutting group.
  • a formation group the strip of filter-paper is folded over itself so as to form a tube in which doses of infusion product are placed, the tube then being progressively closed by gluing the longitudinal edges.
  • the dividing group subsequently divides the tube by means of transversal seams upstream and downstream of respective doses of infusion product, and the cutting group then separates the filter-bags thus formed.
  • the forming of the filter-bags represents a crucial phase in the packaging of infusion products. Effecting a correct forming of each filter-bag containing a dosed quantity of product, in fact, requires complex forming groups, whose functioning can negatively influence the overall production rate, due to the complexity of the phases to be effected.
  • the groups suitable for effecting the forming of filter-bags moreover can consequently be extremely complex.
  • GB 1 381 799 A discloses an apparatus for the production of containers similar to bags with two compartments containing infusion material, such as tea, in which the bag filled with doses also comprises a tag and a length of thread attached at its ends, on the one hand, to the tag, and on the other, to the bag.
  • the apparatus also comprises a rotating shaping turret and formation equipment.
  • WO 00/17055 A2 relates to a machine for attaching a tag to a bag using an intermediate thread.
  • Said machine comprises a series of formation elements positioned on a turret.
  • US 4 977 728 A illustrates a machine for producing double-chamber bags containing infusion material in which a transporting wheel carries a series of arms which effect various formation phases of the bags.
  • DE 195 32 816 A1 also discloses a machine for producing double-chamber bags equipped with a transporting wheel carrying arms which effect various formation phases of the bags, collaborating with a specifically designed stationary cover.
  • the objective of the present invention is to solve the problems indicated above, by conceiving an apparatus that allows the packaging of infusion products to be optimally effected.
  • a further objective of the present invention is to provide an apparatus for the packaging of infusion products operating under safe and high-speed conditions.
  • the apparatus according to the invention suitable for obtaining infusion products of the type comprising a bag filled with a dosed quantity of product, a tag and a length of thread attached at opposite ends to the bag and tag, comprises at least a forming group of a filled bag, defining a rotating carousel in a continuous motion around a rotation axis and associated with an auxiliary cutting group and a folding group.
  • the auxiliary cutting groups and folding group are positioned around the forming carousel, in correspondence with a cutting station and a folding station, respectively.
  • the forming carousel comprises a plurality of forming units rotating with respect to axes parallel to said rotation axis of the carousel.
  • the above forming group also comprises a cutting device carrying a plurality of blades, each blade being interposed between two adjacent forming units.
  • auxiliary cutting groups cooperating with the above forming carousel is activated by activation means according to a combined oscillation and insertion movement into the interposed space, from one side to the opposite side of a forming unit, so as to interact with the above blades for the cutting of single lengths of tubular packaging material, in particular already prepared with doses of the desired product.
  • the auxiliary cutting group comprises an abutment element with respect to the above blades, forming a head containing an opening on the top.
  • the abutment element is therefore suitable for being inserted in the space interposed between a pair of adjacent forming units, intercepting a length of packaging material, preferably wound as a tube, and effecting its cutting due to the insertion of the above blade in the opening of the head of the abutment element.
  • the cutting of the packaging material into single lengths to be folded is effected so as to maintain the integrity of the blade, as it avoids any harmful impact. More specifically, the cutting is effected by interposing the material on the abutment element and inserting the blade into the opening, consequently with the sole abutment of the flexible material to be cut.
  • the apparatus therefore allows the packaging material to be cut with a continuous movement of the forming carousel, without stoppages, allowing high production yields to be obtained, without jeopardizing the integrity of the cutting elements.
  • a further extremely advantageous aspect of the invention lies in the fact that the folding of the bag is effected safely and efficiently, reducing the risk of leakage of the product from the packaging tube, to the minimum.
  • each forming unit comprises withholding means cooperating with receiving means of the tubular lengths, containing dosed quantities of product.
  • Said withholding means can define gripping elements suitable for withholding the end edges of the single lengths.
  • the forming units are suitable for being rotatingly activated on the forming carousel, according to an axis parallel to the rotation axis of the folding carousel, so as to allow a tracking and cooperation motion of the respective units, for the forming and folding of the bag.
  • Said tracking motion thanks to the above withholding means and above-mentioned blockage grippers, allows the product to be safely withheld inside the packaging material, so as to avoid any waste of product, which could be dispersed inside the apparatus, jeopardizing its functioning.
  • the folding group or carousel preferably in a continuous rotation movement, carries a plurality of clamp gripping means, suitable for safely withholding the bags being formed against the respective receiving means of the forming units moved by the above-mentioned forming carousel, during the folding phase.
  • the above-mentioned clamp gripping means cooperate with respective auxiliary gripping means, preferably in the form of pincers, to firmly block the bag being formed, specifically during the folding phase.
  • the auxiliary gripping means can form respective auxiliary pincers, whose activation is coordinated with that of the clamps cited above. Said auxiliary pincers are preferably articulated to the clamps, in each folding unit.
  • auxiliary gripping means are suitable for intercepting and blocking, in an appropriate phase relation, the base of the bag being formed, in abutment with respective folding and counterfolding means for the base itself, carried by the forming carousel and folding carousel respectively.
  • the above auxiliary gripping means therefore contribute to firmly blocking the bag being formed, while it is being handled by the various units mentioned above.
  • auxiliary gripping means withhold the base of the bag, preventing the entry of traces of product in the fold being formed at the base of the bag. Thanks to the presence of the above gripping means and auxiliary gripping means, the bag being formed is safely manipulated at each moment of the folding phase, or more specifically, refolding of the two lobes.
  • auxiliary gripping means suitable for firmly withholding the base of the bag, advantageously guarantees the formation of a "neat" fold at the base of the bag, free of product. This circumstance therefore ensures the forming of an orderly bag, filled with infusion product in a concentrated and compact way, inside the respective lobes.
  • the apparatus for producing packages of infusion products such as, for example, tea, camomile, herbal teas or other infusions, is indicated as a whole with 1.
  • the apparatus 1 operates on a length of thread 2, a bag 3 and a tag 4, for sewing the same length of thread 2, at opposite ends, preferably onto both the bag 3 and tag 4 (see in particular figures 1 , 3 and 5A ).
  • the bag 3 is also suitable for being appropriately filled, before the above sewing operation, with a dosed quantity or dose of product 5.
  • the bag 3 can have, for example, as in the case illustrated, a so-called "two-lobed" conformation.
  • each bag 3 is formed by the folding of a pair of respective containment portions, in each of which a single dose 5 of product is inserted.
  • the bag 3, usually made of filter paper, permeable to water or other infusion liquid, can have, for example, a bellows-like fold 3a at the base, whereas at the opposite closing end 3b, it can have one or more folded flaps to ensure the sealing of the product contained therein (see figures 3 , in addition to figures 5C to 5I ).
  • the tag 4 is preferably made of paper or similar material, suitable for containing printed identifying information of the product.
  • the length of thread 2, connecting the bag 3 and the tag 4 serves for allowing the product to be handled in the infusion phase, to avoid direct contact with the infusion liquid, which generally has a high temperature.
  • the apparatus 1 therefore comprises a dosing group 10 of the infusion product, suitable for dosing single quantities or doses 5 of product, positioning them on a strip 6 of suitable material, preferably filter paper, unwound from a respective reel 7 schematized, for the sake of simplicity, in figure 1 .
  • the single doses 5 are neatly arranged in succession on the strip 6, preferably fed on a substantially horizontal run.
  • the apparatus 1 Downstream of the dosing group 10, the apparatus 1 comprises a longitudinal sealing group 20, suitable for folding the doses 5 and reciprocally closing the longitudinal edges of the strip 6 being unwound, so as to form a tube 6a containing in its interior, the doses 5 prepared by the dosing group 10 (see, in particular, figure 1 ).
  • the apparatus 1 Downstream of the sealing group 20, the apparatus 1 comprises a forming group 30 of the single bags 3 starting from the tube 6a previously sealed longitudinally by the sealing group 20. More specifically, if the package to be produced envisages the formation of a two-lobed bag, as previously indicated, the forming group 30 separates the tube 6a into single lengths 6b, each containing a pair of doses 5, and bellow-folds the above lengths 6b separated in correspondence with a portion of base 3a interposed between the doses 5, so as to form the desired bag 3.
  • the apparatus 1 also comprises a closing station 40 of the closing end 3b of the bag 3, opposite the base 3a, in correspondence with which the folding is effected, for example, of a pair of side flaps and a third flap, for refolding the two previous flaps, so as to seal the respective portions of tube 6a or lobes, each containing a dose 5.
  • a closing station 40 of the closing end 3b of the bag 3 opposite the base 3a, in correspondence with which the folding is effected, for example, of a pair of side flaps and a third flap, for refolding the two previous flaps, so as to seal the respective portions of tube 6a or lobes, each containing a dose 5.
  • Different conformations of the closing end 3b of the bag 3 can obviously be envisaged, in any case suitable for adequately sealing the bag 3, to avoid the undesired leakage of the product.
  • the closing station 40 is preferably positioned in correspondence with a folding carousel 50 of the bags 3, which also effects the folding of the same formed bags and tags 4 at the subsequent stations.
  • the apparatus 1 also comprises a cutting and feeding group 60 of the lengths of thread 2 and a sewing head 70 suitable for sewing respective ends of the lengths of thread 2 in correspondence with the bags 3 and tags 4.
  • the sewing head 70 is preferably interposed between the folding carousel 50 and the cutting and feeding group 60 of the lengths of thread 2.
  • the folding carousel 50 as also the sewing head 70, is preferably activated in a continuous rotating movement, according to respective parallel axes, for example, horizontal.
  • the cutting and feeding group 60 can also comprise a rotating carousel, preferably stepped and positioned, for example, according to an axis 61 perpendicular to the rotation axis of the sewing head 70.
  • the apparatus 1 can also comprise one or more further groups, suitable for positioning the thread 2 around the bag 3, packaging each bag 3 in an outer protective envelope, and boxing a certain number of bags 3 in specific box-shaped packages.
  • the forming group 30 of the bags 3 defines a rotating carousel, preferably in a continuous movement, peripherally carrying a plurality of forming units 31.
  • the forming carousel 30 carries four forming units 31. A different number and arrangement of forming units 31 can obviously be envisaged.
  • Each forming unit 31 comprises a body 32 carrying movable receiving means 33 of the single length 6b of tube 6a, destined for forming a single bag 3, and folding means 34, for folding the base 3a of the bag 3.
  • the forming carousel 30 also comprises at least part of a cutting device 35 of the tube 6a into single lengths 6b, destined for being folded for the formation of each bag 3.
  • the bodies 32 or bases on which the receiving means 33 are positioned are also arranged peripherally with respect to the forming carousel 30, rotating and movable with respect to this, so as to allow the same forming units 31 to acquire a tracking motion with respect to further cooperating devices, for the forming of single bags 3, as described hereunder.
  • the receiving means 33 of the forming carousel 30 define a pair of tile-shaped arms or pallets, suitable for being activated in synchronism and in a suitable phase relation, for receiving a length 6b of tube 6a coming from the sealing group 20, cut according to what is described hereunder by the cutting device 35, withholding it and folding it for the forming of the bag 3.
  • Each receiving means 33 therefore forms a pallet 37 which extends substantially orthogonally from a stem 38 pivoted to the body 32.
  • the pallet 37 has a flattened curved shape, with a convexity facing the outside of the forming carousel 30.
  • the pallet 37 of each tile-shaped element 33 can define a notch 39, appropriately formed on the free edge, suitable, if necessary, for avoiding interference with activation components of the folding means 34, as described in more detail hereunder.
  • each tile-shaped element 33 are alternatingly rotated around the respective fulcrum axis, between a receiving configuration 37a of a length of tube 6a, in correspondence with which a length 6b of tube 6a, containing a pair of doses 5, is received and supported, extending on each pair of pallets 37, and a forming configuration 37b, in correspondence with which the pallets 37 are rotated so as to converge in mutual approach, for feeding a corresponding portion of tube length 6b to the folding or "cupping" phase of the base 3a of the bag 3 and forming phase of the bag 3.
  • the pallets 37 externally define an ideal continuous curved operating surface, so as to be able to receive and support a length 6b of tube 6a in a substantially extended arrangement.
  • the continuity of the curvature of the above receiving surface is interrupted, for folding the bag 3 in the formation phase (see figure 5A , in which both configurations, acquired by different forming units 31, are illustrated).
  • the tile-shaped elements 33 also comprise withholding means 41 suitable for adequately and securely withholding the ends of a respective length 6b of tube 6a, containing a pair of doses 5, to avoid undesired movements and leakage of product, during the forming phases of the bag 3.
  • the withholding means 41 are preferably produced by means of a gripper element, for example in the form of a plate, arranged in correspondence with each stem 38 of the tile-shaped elements 33.
  • Each plate 41 is preferably withheld by return means of the elastic type and alternatingly activated between a withholding position 41a, in response to the stem 38 for firmly holding an end edge of the length 6b of tube 6a, and a release position 41b, rotated and diverging from the stem 38 itself.
  • the folding means 34 for folding the base 3a of the bag also operate between the pallets 37 of each forming unit 31. More specifically, the folding means 34 are preferably suitable for separating the two lobes of the bag 3 being formed by folding the base 3a with a "W"-shaped fold. The result is the formation of the above-mentioned "cupping" of the base 3a of the bag.
  • the folding means 34 comprise a folding element positioned in the centre of each forming unit 31, suitable for cooperating with a counter-folding element 54, carried, on the contrary, by the folding carousel 50, as described in more detail hereunder, for effecting the forming of the base 3a.
  • the folding element 34 and counter-folding element 54 are arranged on opposite sides with respect to the operating surface of the pallets 37, in an intermediate position between the two pallets 37 of each tile-shaped element 33.
  • the folding element 34 in particular, is activated by an specific pusher element 42, to be movable with respect to the body 32, alternating between a withdrawn, rest configuration 34a (see figure 5C ) and an extracted, folding configuration 34b (see figure 5F ).
  • the folding element 34 is situated inside the operating surface defined by the pallets 37 in the rest configuration, whereas it emerges from the above surface in the folding configuration 34b, to intercept the centre portion of the length 6b, progressively causing its folding.
  • the folding organ 34 forms a U-shaped profile, defined by a pair of folding walls 55, substantially parallel, emerging at the sides of an intermediate cavity 56.
  • the walls 55 extend transversally substantially corresponding to the transversal extension of the pallets 37, so as to integrally interact with the length 6b of tube 6a.
  • the counter-folding element 54 which, on the other hand, is carried by the folding carousel 50, defines a folding knife, having a thickness which is such as to interact with the above-mentioned cavity 56.
  • the knife 54 is inserted inside the cavity 56, during the folding operations of the base 3a of the bag, to create the so-called cupping.
  • the cusps of said "W"-shaped cupping are therefore produced by contrast, exerted by the tops of the above-mentioned walls 55, in the folding phase of the two lobes of the tube length 6b, as described hereunder.
  • the folding carousel 50 which is suitable for being rotatingly activated in an appropriate rotation phase relation of the forming carousel 30, peripherally carries a plurality of movable folding units 51 with respect to the carousel 50 itself.
  • Each folding unit 51 is carried by a platform 52 rotating around an axis parallel to the rotation axis of the folding carousel 50, and also to the rotation axis 36 of the forming carousel 30, to allow the "tracking" of each forming unit 31 on the part of a respective folding unit 51.
  • the forming units 31 and folding units 51 therefore cooperate in correspondence with a rotation section in which they are substantially facing each other, and also in reciprocal tracking motion, in correspondence with which a folding station 100 (see figure 5A ) of the bag 3 (see figure 3 ) is defined. More specifically, "tracking" motion refers to a motion whereby the cooperating operating units are at a relative zero velocity.
  • Each folding unit 51 therefore comprises gripping means 53 of the bag 3, associated with the above counter-folding means or knife 54, arranged on the platform 52. More specifically, the gripping means 53 form a pair of clamps, between which the counter-folding knife 54 is positioned.
  • the clamps 53 can be moved between an open configuration 53a, in correspondence with which the clamps 53 are open and the folding unit 51 is at the entrance of the above-mentioned folding station 100 (see figure 5A ), and a closed configuration 53b, in correspondence with which the clamps 53 receive and withhold the bag 3 from the respective forming unit 31 (see figure 5C ). More specifically, when the clamps 53 are in the open configuration 53a, the knife 54 is interposed between the clamps 53, arranged for encountering the cavity 56 of the folding means 34, and creating the cupping of the base 3a of the bag 3.
  • the clamp gripping means 53 are associated with auxiliary gripping means 57 actuated in a coordinated way with the same gripping means 53, for an effective blockage and consequently an effective forming, in particular of the base 3a of the bag 3.
  • the auxiliary gripping means 57 preferably define auxiliary pincers having a pair of branches articulated, at one end, to the respective branches of the clamps 53. In this way, the motion of the auxiliary gripping means 57 is coordinated with that of the clamps 53.
  • the auxiliary pincers 57 can in fact be moved from an inactive distanced configuration 57a, coordinated with the above open configuration 53a of the clamps 53, in which the end portions of the branches of the auxiliary pincers 57 are arranged at the sides of the counter-folding element 54, and an approach abutment configuration 53b, that operates when the clamps 53 are activated towards the above closed configuration 53b; in correspondence with the approach configuration 53b, the end portions of the auxiliary pincers 57 are reciprocally juxtaposed, so as to abut the side flaps of the bellow-fold being formed against the side walls 55, at the base 3a of the bag 3 (see figures 5A to 5I ).
  • the gripping ends of the clamps 53 are suitable for interacting with respective terminal portions of the length 6b of tube 6a, suitable for defining the closing end 3b of the formed bag 3
  • the end portions of the auxiliary pincers 57 are suitable for interacting, at the sides of the folding element 34 and counter-folding element 54, for blocking the portion of bag 3 suitable for forming the base 3a.
  • the branches of the auxiliary pincers 57 when approaching each other in the approach configuration 57b, press corresponding portions of tube length 6b against the side walls 55 of the folding element 34 in an active extracted configuration, therefore blocking the base 3a of the bag 3 being formed.
  • said blocking combined with the blocking of the opposite ends of each lobe of the bag 3 against the receiving means 33, on the part of the clamps 53, guarantees, at each moment, a secure and total control in the handling of the bag 3 and its contents, in the forming phase.
  • auxiliary pincers 57 ensure the formation of a "neat" fold at the base 3a of the bag 3.
  • the base 3a is in fact progressively “stretched” or adhered, starting from the cusps towards the sides of the bellow-fold, to the side walls 55 of the folding element 34, thus preventing the infusion product from leaking inside the fold, preferably bellow-shaped, being formed.
  • the latter is therefore completely free of traces of product. This circumstance allows an orderly and compact final conformation of the packaged product to be obtained.
  • a cutting station 110 (see figure 5A ) is defined upstream of the folding station 100, according to the rotation direction of the forming carousel 30, in correspondence with which the cutting device 35 interacts with the above-mentioned auxiliary group 80.
  • the cutting device 35 preferably defines a plurality of cutting blades 81 arranged radially with respect to the axis 36 of the forming carousel 30 and rotatingly carried by the same carousel. More specifically, each cutting blade 81 is interposed between each forming unit 31 and the adjacent unit. The cutting blades 81 therefore extend radially, with the cutting end arranged peripherally. The cutting end of each blade 81 preferably intercepts the circular profile which ideally encloses, at least in correspondence with the cutting station 110, the operating surfaces of the receiving means 33.
  • the auxiliary cutting group 80 substantially comprises a contrast element 82 and activation means 83.
  • the contrast element 82 is, in fact, suitable for being activated by the above activation means 83 in a cooperation motion with the blades 81 for cutting the tubular strip 6a into single lengths 6b.
  • the activation means 83 comprise for example a leverage 84 and pushing means 85, suitable for effecting, in appropriate synchronism, a combined oscillation movement, in the opposite direction, in the operating run, with respect to the rotation of the forming group 30, and an alternating radial movement, with respect to the rotation axis 36 of the same forming group 30 (see figure 4 ).
  • the cutting station 110 covers a certain portion of the angular path completed, due to the continuous rotation, by the forming units 31 of the forming carousel 30.
  • Said interaction span between a respective forming unit 31 and the contrast element 82 substantially corresponds to the angular distance that affects the single forming unit 31.
  • the contrast element 82 can be moved in oscillation, alternatingly to interact with each side of a single length 6b of tubular strip 6a.
  • the leverage 84 comprising for example a plurality of articulation components, activates, in oscillation, the contrast element 82 from a first side of the forming unit 31 to the opposite side, specifically in an inverse direction with respect to the rotation of the carousel 30 itself.
  • An alternating movement in a radial direction, with respect to the rotation axis 36, is combined, in a suitable phase relation, with this angular motion, with the help of the above-mentioned pushing means 85.
  • the contrast element 82 comprises a head 86 sliding inside a hollow body 87 defining at least a pair of forkshaped side walls 88.
  • the above side walls 88 of the hollow body 87 are distanced so as to occupy the space interposed 89 between two adjacent forming units 31, and intercept the edge of each of these. More specifically, each side wall 88 is suitable for encountering the above edge of a tile-shaped element 33 with a respective end, in an area adjacent to the stem 38.
  • the head 86 sliding inside the hollow body 87, on the other hand, has a conformation which is such as to suitably block the interposed space 89, inserting itself in its interior. Consequently, with the help of the above-mentioned pushing means 85, the head 86 can be alternatingly activated between a withdrawn configuration 86a, inside the hollow body 87, diverted from the above interposed space 89, and an extracted configuration 86b, in correspondence with which the head 86 occupies the above interposed space 89, closing it. In the above extracted configuration 86b, the head 86 of the contrast element 82 therefore protrudes from the side walls 88 of the hollow body 87.
  • the head 86 externally comprises a first lateral side 90 and a second lateral side 91, preferably flat, suitable for sliding on the side surfaces of the corresponding stems 38 of the two forming units 31 affected by interaction with the abutment element 82, so as to intercept the free space 89 and deliver an edge of the length 6b of the tubular strip 6a in the separation phase, to the withholding means 41.
  • the abutment element 82 also comprises a top 92 on which there is an opening 93, which passes through the head 86 and which is suitable for receiving, for an adequate length, a respective longitudinal end of the blade 81.
  • the head 86 is suitable for being alternatingly activated according to a combined movement which comprises, in addition to the above-mentioned oscillation, a radial component, suitable for allowing the insertion of the blade 81 into the transversal opening 93.
  • a combined movement which comprises, in addition to the above-mentioned oscillation, a radial component, suitable for allowing the insertion of the blade 81 into the transversal opening 93.
  • the strip 6 is continuously unwound from the bobbin 7, passing through the dosing group 10, suitable for arranging the doses 5 of product, in succession, and also the sealing group 20, suitable for folding the strip 6 on the same doses 5, so as to obtain a tube 6a.
  • the tube 6a then reaches the inlet of the forming station positioned downstream of the sealing group 20, where it is taken over by a respective forming group 31 of the forming carousel 30 activated in continuous rotation.
  • a length of tube 6a containing a pair of doses 5 adequately spaced, is wound, resting on the operating surfaces of the tile-shaped elements 33 of the forming unit 31 which is situated at the inlet of the cutting station 100 (see figure 5A ).
  • the tube 6a has a first cut end, withheld by the withholding means 41, in correspondence with a first side of the forming unit 31.
  • the abutment element 82 is activated in the operative cutting run, for engagement of the space interposed 89 between two adjacent units 31, opposed with respect to the above first side of the forming unit 31, to effect the separation of a length 6b of strip 6 from the remaining tube 6b being unwound.
  • the blade 81 of the cutting device 35 brought into rotation by the same forming carousel 30, is positioned in correspondence with this interposed space 89.
  • the abutment element 82 is brought in correspondence with the space 89.
  • the side walls 88 are brought close to the two forming units 31 involved in the separation, intercepting the tube 6a. Due to the combined movement of the abutment element 82, the side walls 88 of the hollow body 87 block portions of tube 6a against the respective operative rest surfaces of the tile-shaped elements 33.
  • the head 86 of the abutment element 82 is then pushed by the pushing means 85 from the withdrawn configuration 86a to the extracted configuration 86b.
  • the top 92 intercepts the length of tube 6a interposed between the above-mentioned blocked portions, stretches it, unit it receives the blade 81 in the opening 93, thus effecting the separation cutting of the tube 6a into a single length 6b (see figures 5A and 5B ).
  • the edges of the cut length 6b are progressively folded in abutment of adjacent stems 38, under the sliding of the lateral sides 90, 91 of the head 86 on the stems 38 themselves.
  • the edged folded over the stems 38 are finally withheld by the withholding means 41 which, in a suitable phase relation, are activated from the open configuration 41a to the closed withholding configuration 41b (see figure 5B ).
  • the length 6b of strip thus withheld at the ends is then moved forward, stretched on the operating surfaces of the respective pair of tile-shaped elements 33.
  • the abutment element 82 continues in its combined movement, following the return run, leaving the interposed space 89 distanced from the operative surfaces of the tile-shaped elements 33.
  • the abutment element 82 then oscillates, moving towards the following space 89, according to the rotation direction of the forming carousel 30 (see figure 5C ).
  • the length 6b of tube 6a continues its rotation towards the folding station 100, in correspondence with which it is destined to interact with the folding unit 51.
  • the folding device 34 is arranged in the withdrawn configuration 34a, and is therefore inside the operating surface defined by the pallets 37.
  • the folding unit 51 suitable for cooperating with the forming unit 31 at the inlet of the folding station 100 is arranged with the gripping means 53 in the open configuration 53a and with the auxiliary gripping means 57 in the distanced configuration 57a (see figure 5C ).
  • the folding element 34 is contemporaneously activated by the respective activating means, to progressively intercept the overlying length 6b, as can be seen in figures 5D and 5E .
  • the abutment element 82 is in the oscillation phase towards the interposed space 89 between a further pair of forming units 31, whereas downstream, an already formed bag 3 is closed between the clamps 53 in a closed configuration 53b.
  • the clamps 53 are progressively closed, whereas the pallets 37 are moved towards each other in the forming configuration 37b, so as to accompany the advance movement of the folding element 34 which can therefore entrain a portion of length 6b, lifting it from the operating surface of the same pallets 37, recovering material due to this approach movement.
  • the folding element 34 therefore progressively acquires the extracted configuration 34b (see figure 5F ).
  • the folding element 34 reaches and cooperates with the counter-folding element 54, so as to create the W shape of the base 3a of the bag 3.
  • the auxiliary gripping means 57 are activated, to progressively encounter, on opposite sides, the base 3a being formed, in abutment of the side walls 55 of the folding element 34.
  • the base 3a folded by the folding element 34 and by the counter-folding element 54 is finally blocked by the auxiliary means 57 in an approach configuration 57b (see figures 5F , 5G and 5H ).
  • the clamps 53 then reach the operating surface of the pallets 37, close to the edges adjacent to the stem 38, so as to block the length 6b against the same surface.
  • the withholding means 41 are activated in the opening configuration 41b, to release the terminal edges of the length 6b itself (see figure 5H ). It should be noted that at this point, the folding element 34 can initiate its return run towards the withdrawn configuration 34a.
  • clamps 53 continue with sliding the ends on the operating surface of the pallets 37, until the formed bag 3 has been completely closed (see figure 5I ).
  • the folding unit 51 can then continue its rotation, carrying the formed bag 3 towards the subsequent operating stations of the packaging apparatus, preferably containing further gripping means for receiving and gripping a tag 4 (see figure 3 ).
  • the packaging apparatus as also the forming unit described for illustrative purposes, can undergo numerous modifications and variants according to the various requirements.
  • the materials used can vary according to requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Packages (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)

Claims (11)

  1. Appareil de production d'emballages de produits d'infusion, du type comprenant un sachet (3) rempli d'une quantité de produit dosée, une étiquette (4) et une longueur de fil (2) attachée par des extrémités opposées respectivement audit sachet (3) et à ladite étiquette (4), ledit appareil comprenant un groupe de mise en forme (30) dudit sachet rempli (3), ledit groupe de mise en forme (30) définissant un carrousel rotatif autour d'un axe de rotation (36) et portant une pluralité d'unités de mise en forme (31), dans lequel ledit carrousel de mise en forme (30) porte au moins une partie d'un dispositif de coupe (35) et tourne en mouvement continu autour d'un axe de rotation (36) et dans lequel ledit appareil comprend un groupe de coupe auxiliaire (80) mobile avec un mouvement oscillant et coopérant avec ledit dispositif de coupe (35) porté par ledit carrousel de mise en forme (30) dans ledit mouvement de rotation continu, et caractérisé en ce que ledit appareil comprend aussi un groupe de pliage (50) qui tourne autour d'un axe parallèle audit carrousel de mise en forme (30) et qui coopère avec lesdites unités de mise en forme (31), ledit groupe de coupe auxiliaire (80) et ledit groupe de pliage (50) étant disposés autour dudit carrousel de mise en forme (30), en correspondance respectivement avec une station de coupe (110) et une station de pliage (100) dudit sachet (3), dans lequel chacune desdites unités de mise en forme (31) comprend un corps (32) qui tourne par rapport à un axe parallèle à l'axe de rotation (36) dudit carrousel de mise en forme (30), portant un moyen de réception mobile (33) d'une seule longueur (6b) de tube (6a) destiné à former un sachet simple (3), et un moyen de pliage (34) pour plier la base (3a) dudit sachet (3), ledit groupe de pliage (50) comprenant un élément de contre-pliage (54) qui coopère avec ledit moyen de pliage (34) pour former ladite base (3a) dudit sachet (3).
  2. Appareil selon la revendication 1, caractérisé en ce que lesdits moyens de réception (33) définissent une paire de palettes (37) alternativement mobiles entre une configuration de réception (37a), en correspondance avec laquelle une longueur (6b) de tube (6a), contenant une paire de doses (5), est reçue et supportée, s'étendant sur une surface fonctionnelle de chaque paire de palettes (37), et une configuration de mise en forme (37b), en correspondance avec laquelle lesdites palettes (37) de ladite paire sont rapprochées réciproquement l'une de l'autre, afin de faire avancer une partie correspondante de ladite longueur (6b) jusqu'au pliage ou « emboutissage » de ladite base (3a) dudit sachet (3) et à la mise en forme dudit sachet (3).
  3. Appareil selon la revendication 2, caractérisé en ce que ledit moyen de pliage (34) et ledit élément de contre-pliage (54) sont disposés dans des parties opposées de ladite surface fonctionnelle pour supporter lesdites palettes (37), en une position intermédiaire entre lesdites palettes (37) d'une dite paire.
  4. Appareil selon la revendication 3, caractérisé en ce que lesdits moyens de pliage (34) sont activés par un élément de poussée spécifique (42), alternant entre une configuration de repos, en retrait, (34a), et une configuration de pliage, en extension, (34b), appropriée pour intercepter une partie centrale de ladite longueur (6b), en la pliant progressivement par coopération avec ledit élément de contre-pliage (54) porté par ledit carrousel de pliage (50) en correspondance avec ladite station de pliage (100).
  5. Appareil selon l'une des revendications précédentes, caractérisé en ce que ledit carrousel de pliage (50) tourne en suivant un mouvement continu.
  6. Appareil selon l'une des revendications précédentes, caractérisé en ce que ledit carrousel de pliage (50) comprend une pluralité d'unités de pliage (51), chaque unité de pliage (51) comprenant une plate-forme (52) qui tourne selon un axe parallèle à l'axe de rotation dudit carrousel de pliage (50) et un moyen de préhension (53) dudit sachet (3), placé sur ladite plate-forme (52), pour réaliser, en correspondance avec ladite station de pliage (100), un mouvement de poursuite entre ladite unité de mise en forme (31) et ladite unité de pliage (51), qui coopèrent entre elles.
  7. Appareil selon la revendication 6, caractérisé en ce que lesdits moyens de préhension (53) définissent une paire de pinces, entre lesquelles est positionné ledit élément de contre-pliage (54), lesdites pinces (53) étant mobiles entre une configuration ouverte (53a), en correspondance avec laquelle lesdites pinces (53) sont ouvertes à l'entrée de ladite station de pliage (100) et ledit élément de contre-pliage (54) est prévu pour rencontrer ledit moyen de pliage (34) porté par ladite unité de mise en forme (31) qui coopère, ce qui provoque le pliage de la base (3a) du sachet (3), et une configuration fermée (53b), en correspondance avec laquelle lesdites pinces (53) reçoivent, et retiennent entre elles, ledit sachet (3) provenant de ladite unité de mise en forme (31) qui coopère.
  8. Appareil selon la revendication 7, caractérisé en ce qu'il comprend en outre un moyen de préhension auxiliaire (57) associé audit moyen de préhension (53), ledit moyen de préhension auxiliaire (57) étant alternativement mobile de façon coordonnée par rapport audit moyen de préhension (53) entre une configuration distante (57a), en correspondance avec laquelle lesdits moyens de préhension auxiliaire (57) sont distants et au repos sur les côtés dudit élément de contre-pliage (54) et lesdits moyens de préhension (53) sont dans ladite configuration ouverte (53a), et une configuration de point d'appui d'approche (57b), en correspondance avec laquelle lesdits moyens de préhension auxiliaire (57) prennent appui sur ladite base (3a) sur des côtés opposés, pliés sur ledit moyen de pliage (34) et ledit élément de contre-pliage (54) et lesdits moyens de préhension (53) sont activés vers ladite configuration fermée (53a), afin de bloquer et recevoir ledit sachet (3) qui est mis en forme.
  9. Appareil selon l'une des revendications précédentes, caractérisé en ce que ledit groupe de coupe auxiliaire (80) comprend un élément de contraste (82) et un moyen d'activation (83), agissant en correspondance avec ladite station de coupe (110), ledit élément de contraste (82) étant approprié pour être activé par ledit moyen d'activation (83) dans un mouvement de coopération avec un moyen de coupe (81) porté par ledit dispositif de coupe (35) intégré audit carrousel de mise en forme (30).
  10. Appareil selon la revendication 9, caractérisé en ce que lesdits moyens d'activation (83) comprennent un système de levier (84) et un moyen de poussée (85) capables de réaliser en synchronisme approprié un mouvement d'oscillation combinée, dans une direction opposée, dans la course fonctionnelle, par rapport à la rotation dudit groupe de mise en forme (30), et un mouvement radial alternatif, par rapport à l'axe de rotation (36) du même groupe de mise en forme (30).
  11. Appareil selon la revendication 9, caractérisé en ce que ledit élément de contraste (82) comprend une tête (86) qui glisse à l'intérieur d'un corps creux (87) définissant un sommet (92) ayant une ouverture transversale (93), appropriée pour rencontrer ladite lame (81) dudit dispositif de coupe (35), pour réaliser la découpe dudit tube (6a) de ladite courroie (6) dans ladite longueur (6b).
EP15748172.2A 2014-08-28 2015-07-28 Appareil de production de paquets de produits d'infusion Not-in-force EP3186153B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO20140468 2014-08-28
PCT/EP2015/001546 WO2016029987A1 (fr) 2014-08-28 2015-07-28 Appareil de production de paquets de produits d'infusion

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EP3186153A1 EP3186153A1 (fr) 2017-07-05
EP3186153B1 true EP3186153B1 (fr) 2017-11-29

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EP (1) EP3186153B1 (fr)
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WO (1) WO2016029987A1 (fr)

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Also Published As

Publication number Publication date
CN107074384A (zh) 2017-08-18
WO2016029987A1 (fr) 2016-03-03
WO2016029987A8 (fr) 2017-04-13
EP3186153A1 (fr) 2017-07-05
US20170233120A1 (en) 2017-08-17

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