EP3426561A1 - Machine pour réaliser des sacs filtrants dotés de produits d'infusion - Google Patents

Machine pour réaliser des sacs filtrants dotés de produits d'infusion

Info

Publication number
EP3426561A1
EP3426561A1 EP17713439.2A EP17713439A EP3426561A1 EP 3426561 A1 EP3426561 A1 EP 3426561A1 EP 17713439 A EP17713439 A EP 17713439A EP 3426561 A1 EP3426561 A1 EP 3426561A1
Authority
EP
European Patent Office
Prior art keywords
feed direction
filter bags
strip
station
filter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17713439.2A
Other languages
German (de)
English (en)
Other versions
EP3426561B1 (fr
Inventor
Andrea SERMENGHI
Sauro Rivola
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.)
IMA Industria Macchine Automatiche SpA
Original Assignee
IMA Industria Macchine Automatiche SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by IMA Industria Macchine Automatiche SpA filed Critical IMA Industria Macchine Automatiche SpA
Publication of EP3426561A1 publication Critical patent/EP3426561A1/fr
Application granted granted Critical
Publication of EP3426561B1 publication Critical patent/EP3426561B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/207—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles the web advancing continuously
    • 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
    • B65B29/028—Packaging of substances, e.g. tea, which are intended to be infused in the package packaging infusion material into filter 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
    • B65B61/08—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 using rotary cutters
    • 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
    • B65B61/28—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for discharging completed packages from machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/2014—Tube advancing means
    • B65B9/2028—Rollers or belts

Definitions

  • This invention relates to a machine for making filter bags with infusion products, such as tea, coffee, camomile and the like, in particular single- chamber or single-lobe filter bags.
  • a feeding station designed to feed a strip of filter material
  • a forming and joining station designed to form the strip in a tubular shape and designed to advance the strip in a tubular shape along a vertical feed direction;
  • a dosing station designed for dosing the infusion product and positioned above the forming and joining station;
  • a closing station designed to close an open portion of the strip in the tubular shape defining, simultaneously, a top end of a filter bag being formed and a bottom end of the next filter bag;
  • a cutting station designed to separate a filter bag formed from a next filter bag being formed positioned along the vertical feed axis, downstream of the closing station.
  • stations are structured, for example, as carousels rotating in a stepwise fashion about horizontal axes.
  • the machine operates intermittently (step-wise) and thus has limited productivity.
  • the machine has a relatively complex structure and operation, comprising a pair of drive grippers which must be moved in a synchronised fashion so as to always have a drive gripper holding on the strip with the tubular shape.
  • complex gripping systems are necessary for carrying the filter bags towards successive stacking and boxing stations.
  • the machine also has reduced flexibility: in fact, the cutting station separates always and only single filter bags from the strip with the tubular shape, because the stations located downstream of the cutting station are designed for processing only individual filter bags. Therefore, it is not possible to form groups of two or more filter bags partly separated by dashed pre-cut lines, designed to be housed in suitable boxes.
  • the aim of this invention is to provide a machine and a method for making filter bags for infusion products, such as tea, camomile, herbs, etc., which overcome the above-mentioned limitations and drawbacks.
  • Figure 1 is a schematic front view of a machine for making filter bags for infusion products according to the invention, with some parts cut away in order to better illustrate others;
  • Figure 2 is a schematic front view of a detail P of the machine of Figure 1 , in enlarged scale.
  • a machine 100 according to the invention is used for producing filter bags 1 with infusion products (such as tea, coffee, camomile, etc.) from a continuous strip S of filter material.
  • infusion products such as tea, coffee, camomile, etc.
  • the filter bags 1 are of the single-chamber or single lobe type, with top 1 a and bottom 1 b, without string, tag and sheet of overwrapping material.
  • filter material includes a plurality of materials selected between filter paper, heat-sealable filter paper, woven/non-woven plastic materials, and other known materials for infusion products.
  • the machine 100 for making filter bags 1 with infusion products comprises a feeding station 2 configured for feeding the strip S of filter material and a forming and joining station 3 configured to pre-form the strip S of filter material into a closed tubular shape.
  • the strip S is fed along a first feed direction Z.
  • the first feed direction Z is vertical.
  • the machine 100 also comprises a dosing station 4 configured for dosing the infusion product inside the strip S of filter material with a closed tubular shape.
  • the filling station 4 is positioned above the forming and joining station 3.
  • the machine 100 also comprises a closing station 5 configured for closing an open portion of the strip S with a closed tubular shape and defining, simultaneously, the top 1 a of a filter bag 1 being formed and a bottom 1 b of a next filter bag 1.
  • the closing station 5 forms a continuous strip S1 of filter bags 1 (already formed). In other words, the closing station 5 transforms the strip S into a closed tubular shape of a continuous strip S1 of filter bags 1 .
  • the closing station 5 is positioned downstream of the forming and joining station 3 along the first feed direction Z.
  • the machine 100 comprises, downstream of the closing station 5 along the first feed direction Z, a drive member 6 configured to intercept a continuous strip S1 of filter bags 1 , advancing along the first feed direction Z, and able to divert the continuous strip S1 of filter bags 1 from the first feed direction Z to a second feed direction T, transversal to the first feed direction Z.
  • the second feed direction T is horizontal.
  • the first feed direction Z is vertical and the second feed direction T is horizontal.
  • the machine 100 also comprises a separating station 7, configured to separate groups of one or more filter bags 1 from the continuous strip S1 of filter bag 1 and positioned downstream of the drive member 6.
  • the separating station 7 is positioned along the second feed direction T.
  • the separating station 7 cuts the continuous strip S1 of the filter bag 1 transversely to the second feed direction T.
  • the filter bags 1 formed in the separating station 7 can be single filter bags 1 or groups of filter bags 1 jointed together in succession to define multiple formats of filter bags 1 , for example partially separated by dashed pre-cut lines, at the top 1 a of a filter bag 1 and the bottom 1 b of an adjacent filter bag 1 .
  • the machine 100 comprises a pulling unit 8 configured to pull the continuous strip S1 of filter bags 1 .
  • the pulling unit 8 is interposed between the drive member 6 and the separating station 7 to allow a controlled pulling of the continuous strip S1 of filter bags 1 towards the separating station 7.
  • the machine 100 comprises in succession, advantageously along the second feed direction T, the drive member 6, the pulling unit 8 and the separating station 7.
  • the drive member 6 is positioned below and at a predetermined distance D from the closing station 5 along the first feed direction Z.
  • the pulling unit 8 pulls and moves continuously the continuous strip S1 of filter bags 1.
  • the pulling unit 8 advantageously pulls and moves continuously also the strip S in the closed tubular shape.
  • the separating station 7 it is particularly advantageous to handle the filter bags 1 once separated (either in groups of one or more bags), if the second feed direction T, along which the separating station is positioned, is horizontal.
  • successive steps of transferring and stacking groups of filter bags 1 are particularly easy, precise and fast.
  • FIG. 1 illustrates a handling and stacking station 28 designed to stack groups of two filter bags 1 inside a vertical storage unit 30 located under a pusher means 29.
  • the drive member 6, illustrated in detail in Figure 2 comprises a drum 61 , which rotates continuously about a horizontal axis X.
  • the drum 61 has a circumferential surface on which is formed a plurality of impressions 9, each of which is shaped to match a corresponding filter bag 1 of the continuous strip S1 of filter bags 1 .
  • impressions 9 allow a precise intercepting of the filter bags 1 and a consequent deviation of the continuous strip S1 of filter bags 1 from the first feed direction Z to the second feed direction T.
  • the separating station 7 comprises a rotary knife 10, which rotates continuously about a horizontal axis, and a fixed contrast element 1 1 .
  • the rotary knife 10 and fixed contrast element 1 1 are positioned on opposite sides of the continuous strip S1 of filter bags 1 along the second feed direction T.
  • the separating station 7 comprises a rotary knife 10, which rotates continuously about a horizontal axis, and a rotary counter-knife 12 (illustrated with a dashed line in Figure 2), which rotates continuously and in a synchronised fashion with the rotary knife 10.
  • the rotary knife 10 and the rotary counter-knife 12 are positioned on opposite sides of the continuous strip S1 of filter-bags 1 formed.
  • the rotary knife may advantageously comprise at least one blades to cut and separate completely a filter bag 1 from the continuous strip S1 of filter bags 1 and at least one blade to form dashed pre-cut lines between adjacent filter bags 1.
  • the separating station 7 may comprise cutting means to separate adjacent filter bags 1 , and pre-cutting means designed to form dashed pre-cut lines between adjacent filter bags 1 .
  • the cutting means and the pre-cutting means are actuated in a synchronised fashion for making groups with a predetermined number of filter bags 1 , the adjacent filter bags 1 of a same group being mutually partly separated by dashed pre-cut lines.
  • the pulling unit 8 comprises a pair of motor-driven belts 13, 14, located on opposite sides of the continuous strip S1 of filter bags 1 formed.
  • the belts 13, 14 are closed in a loop around a respective pair of rollers 15, 16; 17, 18 and configured to pull continuously the continuous strip S1 of filter bags 1 towards the separating station 7.
  • the belts 13, 14 perform the dual function of maintaining a constant pulling action on the continuous strip S1 of filter bags 1 (in coordination with the drive member 6, in particular with the drum 61 ) and feeding the strip S1 , in a controlled manner, to the separating station 7.
  • the feeding station 2, the forming and joining station 3 and the closing station 5 are moved continuously and in a synchronised fashion with each other.
  • the station 2 feeding for the continuous strip S (see Figure 1 ) comprises a reel holder 19 designed to house a reel of filter material, and a series of rollers 20, including at least one drive roller, a dandy roller and a motor-driven roller for feeding, continuously, the continuous strip S of filter material unwound from the reel towards the forming and joining station 3.
  • the forming and joining station 3 comprises a series of shaped walls 21 configured to fold and divert the strip S towards the first feed direction Z.
  • the shaped walls 21 define a so-called 'tie' and allow the strip S to be folded in a closed tubular shape.
  • free longitudinal flaps of the strip S are superposed along a direction parallel to the first feed direction Z, to form a continuous tube of filter material.
  • the forming and joining station 3 comprises joining means 22 designed to join the free longitudinal flaps, once they have been mutually superposed by the tie.
  • the joining means 22 may advantageously comprise one or more hot sealers (heated sealing rollers) or cold sealers (ultrasound sealers).
  • the dosing station 4 may comprise a feed hopper 23 for feeding the infusion product inside a dosing unit 24, in conjunction with a pusher element 25, to form and release individual doses of product inside the strip S in a closed tubular shape.
  • the pusher element 25 is movable in both directions along the first feed direction Z so as to accelerate the product towards the bottom 1 b already formed of a filter bag 1 being formed.
  • the closing station 5 may comprise a pair of sealing heads 26 and corresponding movement means 27.
  • the movement means 27 are configured for moving the sealing heads 26 in continuous, synchronised, roto-translation according to a trajectory substantially tracking the strip S with a closed tubular shape along the first feed direction Z.
  • sealing heads 26 can:
  • the initial position and the final position of the sealing heads 26 may be more or less mutually spaced apart.
  • the sealing heads 26 may comprise hot sealers, that is to say, heated rollers or heads, or cold sealers, that is to say, of the ultrasound type.
  • the invention also provides a method for making filter bags 1 comprising the following steps:
  • the step of diverting the continuous strip S1 of filter bags 1 is performed continuously.
  • the method also comprises a step of pulling (or dragging) the continuous strip S1 along the second feed direction T, after (or in combination with) the step of diverting the continuous strip S1 of filter bags 1 from the first feed direction Z to the second feed direction T, transversal to the first feed direction Z.
  • the step of diverting the continuous strip S1 of filter bags 1 comprises partly wrapping the continuous strip S1 of filter bags 1 about a drive member 6 rotating continuously about a horizontal axis X.
  • the step of forming the strip S of filter material in a closed tubular shape is performed continuously.
  • the step of feeding the strip S of filter material in a closed tubular shape is performed continuously.
  • the step of closing an open portion of the strip S of filter material into a closed tubular shape is performed continuously.
  • the step of pulling or dragging the strip S1 along the second feed direction T is performed continuously.
  • the step of separating groups of one or more filter bags 1 is performed continuously.
  • the step of separate groups of one or more filter bags 1 is performed along the second feed direction T.
  • the first feed direction Z is vertical and the second feed direction T is horizontal.
  • a machine and a method for making filter bags as described above fully achieve the preset aims with obvious advantages. More specifically, diverting the continuous strip of filter bags from the first feed direction to the second feed direction allows a safe and precise cutting of the filter bags, in the size required, that is to say, into groups of one, two or more filter bags partly separated by dashed pre-cutting lines. Moreover, diverting the continuous strip of filter bags from the first feed direction to the second feed direction simplifies stations and successive stacking steps.
  • the continuous operation mode allows the productivity to be increased, maintaining a high quality of the filter bag.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)

Abstract

L'invention concerne une machine pour réaliser des sacs filtrants (1) dotés de produits d'infusion, laquelle machine comprend une station d'introduction (2) configurée de façon à introduire une bande (S) de matériau de filtre ; une station de formation et de réunion (3) configurée de façon à former la bande (S) sous une forme tubulaire fermée ; une station de fermeture (4) configurée de façon à doser le produit d'infusion à l'intérieur de la bande (S) avec une forme tubulaire fermée ; une station de fermeture (5) configurée de façon à fermer une partie ouverture de la bande (S) avec une forme tubulaire fermée et à définir simultanément un sommet (1a) d'un sac filtrant (1) qui est formé et un fond (1b) du sac filtrant suivant (1) ; et un élément d'entraînement (6), configuré de façon à intercepter une bande continue (S1) de sacs filtrants (1) avançant le long d'une première direction d'avance (Z) et à dévier la bande continue (S1) de sacs filtrants (1) à partir de la première direction d'avance (Z) jusqu'à une seconde direction d'avance (T), transversale à la première direction d'avance (Z).
EP17713439.2A 2016-03-08 2017-02-27 Machine pour réaliser des sacs filtrants dotés de produits d'infusion Active EP3426561B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUA2016A001427A ITUA20161427A1 (it) 2016-03-08 2016-03-08 Macchina per produrre sacchetti-filtro con prodotti da infusione
PCT/IB2017/051125 WO2017153868A1 (fr) 2016-03-08 2017-02-27 Machine pour réaliser des sacs filtrants dotés de produits d'infusion

Publications (2)

Publication Number Publication Date
EP3426561A1 true EP3426561A1 (fr) 2019-01-16
EP3426561B1 EP3426561B1 (fr) 2020-04-22

Family

ID=56203549

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17713439.2A Active EP3426561B1 (fr) 2016-03-08 2017-02-27 Machine pour réaliser des sacs filtrants dotés de produits d'infusion

Country Status (4)

Country Link
EP (1) EP3426561B1 (fr)
ES (1) ES2805065T3 (fr)
IT (1) ITUA20161427A1 (fr)
WO (1) WO2017153868A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4756915A (en) * 1987-04-09 1988-07-12 Tetley, Inc. Process for preparing a brewed beverage
GB9121420D0 (en) * 1991-10-09 1991-11-20 Ag Patents Ltd Manufacturing infusion packages
GB9314098D0 (en) * 1993-07-08 1993-08-18 Unilever Plc Apparatus and methods for producing packets
US6615882B1 (en) * 2002-03-11 2003-09-09 Shui Yung Hsieh Filling device of a dual layered filling and packing device
IT1399862B1 (it) * 2010-04-30 2013-05-09 Ima Flavour S R L Ora Ima Ind S R L Macchina ad asse verticale per la produzione di sacchetti-filtro con prodotti da infusione

Also Published As

Publication number Publication date
ES2805065T3 (es) 2021-02-10
ITUA20161427A1 (it) 2017-09-08
EP3426561B1 (fr) 2020-04-22
WO2017153868A1 (fr) 2017-09-14

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