EP3393914B1 - Maschine zur herstellung von filterbeuteln für infusionsprodukte mit faltstationen - Google Patents

Maschine zur herstellung von filterbeuteln für infusionsprodukte mit faltstationen Download PDF

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Publication number
EP3393914B1
EP3393914B1 EP16823344.3A EP16823344A EP3393914B1 EP 3393914 B1 EP3393914 B1 EP 3393914B1 EP 16823344 A EP16823344 A EP 16823344A EP 3393914 B1 EP3393914 B1 EP 3393914B1
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EP
European Patent Office
Prior art keywords
piece
receiving
operating position
designed
filter material
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Application number
EP16823344.3A
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English (en)
French (fr)
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EP3393914A1 (de
Inventor
Sauro Rivola
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IMA Industria Macchine Automatiche SpA
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IMA Industria Macchine Automatiche SpA
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    • 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
    • B65B29/025—Packaging of substances, e.g. tea, which are intended to be infused in the package packaging infusion material into pods

Definitions

  • This invention relates to a machine for making filter-bags for infusion products.
  • infusion products means products such as tea, coffee, camomile (in powder, granules, or leaves).
  • a machine according to the invention is used for forming filter-bags of the so-called two-lobed type, that is to say, filter-bags comprising a single piece of filter paper defining two separate and closed chambers. Each chamber contains a dose of infusion product.
  • the two chambers are folded towards each other forming a single upper end (in the shape of an upturned "V") and a bottom end in the shape of a "W".
  • the filter-bag may also be equipped with a thread for association with a gripping tag.
  • Patent document EP765274 (by this Applicant) describes a machine for forming a filter-bag of the type described.
  • That patent document describes a machine structured along a forming and feeding line on which are positioned:
  • This station comprises:
  • the purpose of the pair of gripping elements is to guide the tubular piece of filter paper from a rectilinear configuration to a configuration folded in two parts placed side by side.
  • the piece of filter paper is delivered to a gripper of the carousel.
  • the two gripping elements have operational ends configured to form a fold in the shape of a "W" in a middle part of the piece of filter paper and guide in a controlled manner the piece of filter paper towards the carousel.
  • the folding station comprises two presser elements, movable in synchrony with the gripper elements, designed to hold the free ends (opposite each other) of the piece of filter paper being formed against the fixed supporting surfaces in such a way as to prevent the product from escaping.
  • presser elements come into contact with the piece of filter paper after the arrival of the piece above the fixed supporting surfaces, during the step of forming the "W" fold and in the first step of a controlled lowering of the piece of filter paper towards the carousel.
  • the station structured in this way has high level precision and operational reliability characteristics.
  • the aim of this invention is to provide a machine for forming filter-bags containing infusion products which can overcome the above-mentioned drawbacks.
  • the aim of this invention to provide a machine for forming filter-bags for infusion products which is able to operate at high production speed even with heavy and large filter-bags.
  • the machine comprises a folding station, designed to fold a piece of filter material and positioned along a forming and feeding line, and a receiving carousel designed to receive from the folding station and move the piece of filter material to at least one operating station designed to make a filter-bag starting from the piece of filter material.
  • filter material is filter paper, which is referred to hereinafter in the description for reasons of simplicity, but it is understood that the invention applies with any filter material suitable for be folded in the form of filter bags for infusion products, such as, for example with polymeric materials.
  • the folding station comprises two receiving surfaces designed to receive the piece of filter paper and having respective mutually converging surfaces to define a channel facing towards the receiving carousel.
  • the folding station also comprises a pair of gripping elements operatively positioned on opposite sides of the channel and movement means designed to move with a synchronised reciprocal movement the pair of gripping elements towards, and away from, the receiving carousel.
  • the gripping elements are configured to act on both sides at an intermediate zone of the piece of filter paper positioned along the receiving surfaces for folding in conjunction with the receiving surfaces, and transferring to the receiving carousel, the piece of filter paper.
  • the folding station also comprises two flat auxiliary walls, one for each receiving surface.
  • the flat auxiliary walls are movable between an operating position for receiving, wherein the flat auxiliary walls receive the piece of filter material advancing along a feed line and are mutually coplanar, and an operating position for controlled release, wherein the flat auxiliary walls are inclined towards the channel defined by the receiving surfaces and are designed to release in a controlled manner the piece of filter paper to the receiving carousel.
  • the receiving carousel is positioned beneath the folding station.
  • the folding station also comprises movement devices, synchronised with the movement means, designed to move the flat auxiliary walls from the operating position for receiving to the operating position for controlled release and vice versa.
  • each flat auxiliary wall is connected to movement devices synchronised with the movement means of the gripping elements, to move each flat auxiliary wall from a first operating position for receiving the piece of filter paper, wherein the two flat walls are coplanar with each other and parallel to the feed line, to a second operating position for controlled release of the piece of filter paper, wherein the two flat walls are inclined towards the channel defined by the receiving surfaces.
  • the folding station comprises two presser elements, each located above a respective receiving surface and movable in a synchronised fashion with the gripping elements between a raised non-operating position, wherein the presser element are spaced apart from the receiving surfaces, and an operating position for retaining, wherein the presser elements are in contact with, and push against the relative receiving surface, corresponding free ends of the piece of filter paper, at least at the first operating position of the flat auxiliary walls.
  • the pieces of filter paper are positioned horizontally on the auxiliary flat walls and, only after being received and locked by the gripping elements and/or the presser elements, are folded and moved towards the receiving carousel. There is, therefore, no uncontrolled falling or errors in positioning of the piece of filter paper, because until the piece of filter paper is locked by the gripping elements and/or by the presser elements, it remains resting on a horizontal surface formed by the flat auxiliary walls.
  • a machine according to the invention labelled 100 in its entirety, is used for forming filter-bags containing infusion products.
  • infusion products means products such as tea, coffee and camomile dosed in powder, granules, or leaves.
  • the filter-bag formed by a machine according to the invention comprises a piece 1 of filter paper with an elongate shape (tubular) having at least two chambers 2, 3 containing corresponding doses D1 and D2 of infusion product and separate from each other.
  • the two chambers 2, 3 are folded towards each other forming a single upper end (in the shape of an upturned "V") and a bottom end in the shape of a "W".
  • the machine 100 comprises, along a forming and feeding line L, a plurality of stations (of known type and therefore not illustrated) designed to cut and form a piece 1 of filter paper with the two chambers 2, 3 (containing the doses D1 and D2) separated by an intermediate zone 1a.
  • the machine 100 also comprises, again along the forming and feeding line L, a folding station 4, designed to fold opposite ends of the piece 1 of filter paper and comprising at least two receiving surfaces 5, 6 designed to receive the piece 1 of filter paper.
  • the receiving surfaces 5, 6 have surfaces mutually converging to define a channel 7 facing towards an underlying receiving carousel 8 designed to receive the piece 1 of filter paper once it has been folded in the folding station 4 (the receiving carousel 8 is only partly illustrated with a dashed line in Figure 6 ).
  • the receiving surfaces 5, 6 have a curved shape which determines a mutual moving towards each other of the chambers 2, 3 whilst the piece 1 of filter paper approaches the receiving carousel 8.
  • the folding station 4 also comprises a pair of gripping elements 9, 10 operatively positioned on opposite sides of the channel 7 and movement means 11 designed to move with a synchronised reciprocal movement the pair of gripping elements 9, 10 towards, and away from, the receiving carousel 8.
  • the gripping elements 9 and 10 act on both sides, at the intermediate zone 1a, on the piece 1 of filter paper for folding (from a flat configuration to a configuration with chambers side by side, Figures 3-5 ), and transferring ( Figure 6 ) to the underlying receiving carousel 8, the piece 1 of filter paper.
  • the folding station 4 comprises two flat auxiliary walls 12, 13, one for each receiving surface 5, 6.
  • the flat auxiliary walls 12, 13 are movable between an operating position for receiving, wherein the flat auxiliary walls 12, 13 receive the piece 1 of filter paper advancing along a feed line and are mutually coplanar Figures 3 and 4 ), and an operating position for controlled release, wherein the flat auxiliary walls 12, 13 are inclined towards the channel 7 defined by the receiving surfaces 5, 6 and are designed to release in a controlled manner the piece 1 of filter paper to the underlying receiving carousel 8 ( Figured 5 and 6).
  • the flat auxiliary walls 12, 13 in the operating position for receiving are positioned horizontally one after the other along the feeding and forming line L and define a support surface for the piece 1 of filter paper.
  • the flat auxiliary walls 12, 13 in the operating position for receiving can be positioned mutually at a distance such as to leave an opening, which is small enough such as no to allow the piece 1 of filter paper to fall be gravity towards the channel 7.
  • the folding station 4 also comprises movement devices 14, synchronised with the movement means 11, designed to move the flat auxiliary walls 12, 13 from the operating position for receiving to the operating position for controlled release and vice versa.
  • each flat auxiliary wall 12, 13 comprises a movable portion of the corresponding receiving surface 5, 6 (see Figures 1 , 2 ).
  • each flat auxiliary wall 12, 13 comprises a supporting grille 15, connected, at one end 15a, to an articulation shaft 16 connected to the movement devices 14.
  • each receiving surface 5, 6 is formed by a box-shaped frame 17 having a curved active surface 18 and a flat receiving surface 19 parallel to the feeding line L.
  • each receiving surface 5, 6 comprises a plurality of grooves 20 which are longitudinal and mutually parallel, designed to be engaged by a corresponding supporting grille 15 positioned in the second operating position for controlled release.
  • the configuration of the flat auxiliary walls 12, 13 and the receiving surfaces 5 and 6 is such that, in the operating position for controlled release, the flat auxiliary walls 12, 13 are substantially hidden inside the box-shaped frame 17.
  • the articulation shaft 16 is housed in the box-shaped frame 17 of a corresponding receiving surface 5, 6 and beneath a corresponding flat receiving surface 19.
  • the devices 14 for moving the flat auxiliary walls 12, 13 comprise a crank 21 for each articulation shaft 16.
  • cranks 21 are mutually connected by a control rod 22 which is able to mutually synchronise the movements of the flat auxiliary walls 12, 13.
  • the rod 22 is connected to actuator devices 23, which are connected to centralised cam means (not illustrated) which are designed to synchronise the steps for movement of the flat auxiliary walls 12, 13 with the movement members 11, the gripping elements 9, 10 and with the movement (in a step-like fashion) of the receiving carousel 8.
  • the actuator devices 23 can, for example, comprises levers connected to the cam means which are centralised and able to directly control the movement of the control rod 22.
  • the folding station 4 comprises two presser elements 24, 25, each located above a respective receiving surface 5, 6 and movable in a synchronised fashion with the gripping elements 9, 10 between a raised non-operating position ( Figures 1 , 3 , 4 and 6 ), wherein the presser elements 24, 25 are spaced apart from the receiving surfaces 5, 6, and an operating position for retaining ( Figure 5 ), wherein the presser elements 24, 25 are in contact with corresponding free ends of the piece 1 of filter paper, at least at the first operating position of the flat auxiliary walls 12, 13.
  • the flat auxiliary walls 12, 13 move from the operating position for receiving, wherein they support the piece 1 of filter paper, to the operating position for controlled release, wherein they do not make contact with the piece 1 of filter paper which is supported just by the receiving surfaces 5, 6.
  • each presser element 24, 25 has a contact head 24a, 25a configured in the form of a spatula and equipped, on one surface, with a plurality of teeth 26 which engage, in the operating retaining position, with at least one groove 20 made on a receiving surface 19 of a corresponding receiving surface 5, 6.
  • the piece 1 of filter paper fed on the flat auxiliary walls 12, 13 is secured at the ends during a first step of gripping on both sides by the gripping elements 9, 10, and then be accompanied during the lowering step. It should be noted that during the lowering step there is no risk of escape of product from the piece 1 of filter paper precisely because the contact heads 24a, 25a of the presser elements 24, 25 keep the ends the piece 1 of filter paper pressed against the receiving surfaces 5, 6.
  • the presser elements 24, 25 comprise a pair of shafts which support the heads 24a and 25a and are articulated in a shared axis, positioned on top of the heads 24a and 25a.
  • the pair of shafts forms a sort of compass which, in the open position, allows the heads 24a and 25a to come into contact with corresponding ends of the piece 1 of filter paper which are therefore blocked between the heads 24a and 25a and the respective receiving surfaces 5, 6.
  • the pair of shafts when closing and lowering, allow the heads 24a and 25a to follow the ends of the piece 1 of filter paper which slides downwards along receiving surfaces 5, 6 pulled by the gripping elements 9, 10.
  • the pair of shafts can move upwards (detaching from the piece 1 of filter paper) and be positioned in the open position, to allow the heads 24a and 25a to come into contact with a succession of pieces 1 of filter paper.
  • the gripping elements 9, 10 each have a respective operating head 9a, 10a, mutually shaped to define a fold in the form of a "W" at the intermediate zone 1a of the piece 1 of filter paper.
  • the gripping elements 9, 10 embed the intermediate zone 1a of the piece 1 of filter paper, forming the fold in the shape of a "W".
  • the heads 9a, 10a of the gripping elements 9, 10 are connected to, and moved by, corresponding supporting arms.
  • the receiving carousel 8 comprises a plurality of radial gripping arms 8a defining individual housings for the pieces 1 of filter paper.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Claims (8)

  1. Maschine zur Herstellung von Filterbeuteln für Aufgussprodukte vom Typ umfassend ein Stück (1) Filtermaterial mit einer länglichen Form, aufweisend mindestens zwei Kammern (2, 3), enthaltend entsprechende Dosen (D1, D2) eines Aufgussprodukts, wobei die Maschine (100) umfasst:
    - eine Faltstation (4), die ausgestaltet ist, um das Stück (1) Filtermaterial zu falten und die entlang einer Linie (L) zum Zuführen und Formen positioniert ist;
    - ein Aufnahmekarussell (8), das ausgelegt ist, um das Stück (1) Filtermaterial von der Faltstation (4) zu empfangen und mindestens zu einer Bearbeitungsstation zu bewegen, ausgestaltet, um einen Filterbeutel aus dem Stück (1) Filtermaterial herzustellen, wobei die Faltstation (4) umfasst:
    - zwei Aufnahmeoberflächen (5, 6), die ausgestaltet sind, um das Stück (1) Filtermaterial aufzunehmen, aufweisend gegenseitig zusammenlaufende Oberflächen, um einen Kanal (7) zu definieren, der dem Aufnahmekarussell (8) zugewandt ist;
    - ein Paar Greifelemente (9, 10), die betriebswirksam an entgegengesetzten Seiten des Kanals (7) positioniert sind;
    - Bewegungsmittel (11), die ausgestaltet sind, um die Greifelemente (9, 10) mit einer synchronisierten gegenseitigen Bewegung hinführend zum und wegführend vom Aufnahmekarussell (8) zu bewegen,
    wobei das Paar von Greifelementen (9, 10) an beiden Seiten an einer Zwischenposition (1a) des Stücks (1) Filtermaterial wirkt und das Stück (1) Filtermaterial an das darunter befindliche Aufnahmekarussell (8) übergibt,
    dadurch gekennzeichnet, dass die Faltstation (4) umfasst:
    - zwei flache Hilfswände (12, 13), eine für jede Aufnahmeoberfläche (5, 6), bewegbar zwischen einer Aufnahmebetriebsposition, in der die flachen Hilfswände (12, 13) das Stück (1) Filtermaterial empfangen und entlang einer Zuführungslinie vorgeschoben werden und gegenseitig komplanar sind, und einer Betriebsposition für die kontrollierte Freigabe, in der die flachen Hilfswände (12, 13) hinführend zum Kanal (7) geneigt sind, definiert durch die Aufnahmeoberflächen (5, 6), und ausgestaltet sind, um auf eine kontrollierte Weise das Stück (1) Filtermaterial des darunter befindlichen Aufnahmekarussells (8) freizugeben;
    - Bewegungsvorrichtungen (14), die mit den Bewegungsmitteln (11) synchronisiert sind, ausgestaltet, um die flachen Hilfswände (12, 13) aus der Betriebsaufnahmeposition für die kontrollierte Freigabe zu bewegen, und umgekehrt.
  2. Maschine nach dem vorhergehenden Anspruch, wobei eine jede Aufnahmeoberfläche (5, 6) einen kastenförmigen Rahmen (17) umfasst, aufweisend eine gekrümmte aktive Oberfläche (18) und eine flache Aufnahmeoberfläche (19), die parallel zur Zuführungslinie (L) angeordnet ist.
  3. Maschine nach dem vorhergehenden Anspruch, wobei die flache Hilfswand (12, 13) einen Halterungsrost (15) umfasst, der an einem Ende (15a) mit einer Gelenkwelle (16) verbunden ist, die mit den Bewegungsvorrichtungen (14) verbunden ist.
  4. Maschine nach dem vorhergehenden Anspruch, wobei eine jede Aufnahmeoberfläche (5, 6) eine Vielzahl an Nuten (20) umfasst, die längs und zueinander parallel angeordnet und ausgestaltet sind, um mit einem entsprechenden Halterungsrost (15) in Eingriff zu gelangen, der in der zweiten Betriebsposition für die kontrollierte Freigabe positioniert ist.
  5. Maschine nach Anspruch 3 oder 4, wobei die Gelenkwelle (16) im kastenförmigen Rahmen (17) einer entsprechenden Aufnahmeoberfläche (5, 6) und unter einer entsprechenden flachen Aufnahmeoberfläche (19) untergebracht ist.
  6. Maschine nach einem der vorhergehenden Ansprüche, wobei die Bewegungsvorrichtungen (14) der flachen Wände (12, 13) eine Kurbel (21) für eine jede Gelenkwelle (16) umfassen, wobei die Kurbeln (21) miteinander durch eine Steuerstange (22) verbunden sind, die in der Lage ist, die Bewegungen der flachen Hilfswände (12, 13) miteinander zu synchronisieren, wobei die Stange (22) mit den Steuerungsbetätigungsvorrichtungen (23) verbunden ist.
  7. Maschine nach einem der vorhergehenden Ansprüche, wobei die Faltstation (4) zwei Presselemente (24, 25) umfasst, die jeweils über einer jeweiligen Aufnahmeoberfläche (5, 6) angeordnet und synchronisiert mit den Greifelementen (9, 10) zwischen einer angehobenen Nichtbetriebsposition, in der die Presselemente (24, 25) von den Aufnahmeoberflächen (5, 6) beabstandet sind, und einer Haltebetriebsposition bewegbar sind, in der die Presselemente (24, 25) mit den entsprechenden freien Enden des Stücks (1) Filtermaterial, und gegen deren jeweilige Aufnahmeoberfläche (5, 6) drücken, mindestens an der ersten Betriebsposition der flachen Hilfswände (12, 13) in Kontakt sind.
  8. Maschine nach Anspruch 7, wobei ein jedes Presselement (24, 25) einen Kontaktkopf (24a, 25a) aufweist, der in der Form einer Spachtel ausgebildet und auf einer Oberfläche mit einer Vielzahl an Zähnen (26) ausgestattet ist, die in der Haltebetriebsposition mit mindestens einer auf der Aufnahmeoberfläche (19) einer entsprechenden Aufnahmeoberfläche (5, 6) ausgebildeten Nut (20) in Eingriff gelangen.
EP16823344.3A 2015-12-23 2016-12-16 Maschine zur herstellung von filterbeuteln für infusionsprodukte mit faltstationen Active EP3393914B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUB2015A009642A ITUB20159642A1 (it) 2015-12-23 2015-12-23 Macchina per formare sacchetti-filtro per prodotti da infusione con stazione di piegatura.
PCT/IB2016/057702 WO2017109655A1 (en) 2015-12-23 2016-12-16 Machine for forming filter-bags for infusion products with folding stations

Publications (2)

Publication Number Publication Date
EP3393914A1 EP3393914A1 (de) 2018-10-31
EP3393914B1 true EP3393914B1 (de) 2020-02-05

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EP16823344.3A Active EP3393914B1 (de) 2015-12-23 2016-12-16 Maschine zur herstellung von filterbeuteln für infusionsprodukte mit faltstationen

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EP (1) EP3393914B1 (de)
ES (1) ES2784906T3 (de)
IT (1) ITUB20159642A1 (de)
WO (1) WO2017109655A1 (de)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1207631B (it) * 1987-03-09 1989-05-25 Cestind Centro Studi Ind Apparecchiatura per il confezionamento in bustine di singoli sacchetti-filtro biuso nelle macchine confezionatrici in continuo didetti sacchetti-filtro
DE3806386C1 (de) * 1988-02-29 1989-03-09 Teepack Spezialmaschinen Gmbh & Co Kg, 4005 Meerbusch, De
IT1282482B1 (it) * 1995-04-04 1998-03-23 Tecnomeccanica Srl Metodo per ripiegare a soffietto uno spezzone tubolare di carta-filtro a forma allungata contenente un prodotto da infusione. ivi disposto
IT1282483B1 (it) * 1995-04-04 1998-03-23 Tecnomeccanica Srl Macchina per il confezionamento di buste-filtro contenenti un prodotto da infusione provviste di etichetta di presa collegata alla busta
IT1286767B1 (it) * 1996-11-15 1998-07-17 Luxteco International S A Soci Apparecchiatura per il confezionamento
IT1305534B1 (it) * 1998-09-18 2001-05-09 Ima Spa Macchina perfezionata per il confezionamento di sacchetti filtrocontenenti un prodotto da infusione provvisti di etichetta di presa
ITBO20130489A1 (it) * 2013-09-12 2015-03-13 Tecnomeccanica Srl Metodo ed unita' per la formazione di sacchetti filtro a doppia camera per materiale da infusione.

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
WO2017109655A1 (en) 2017-06-29
ITUB20159642A1 (it) 2017-06-23
EP3393914A1 (de) 2018-10-31
ES2784906T3 (es) 2020-10-01

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