EP2462025B1 - Ensemble de pliage, en particulier pour des machines d'emballage - Google Patents

Ensemble de pliage, en particulier pour des machines d'emballage Download PDF

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Publication number
EP2462025B1
EP2462025B1 EP09787822.7A EP09787822A EP2462025B1 EP 2462025 B1 EP2462025 B1 EP 2462025B1 EP 09787822 A EP09787822 A EP 09787822A EP 2462025 B1 EP2462025 B1 EP 2462025B1
Authority
EP
European Patent Office
Prior art keywords
product
chamber
suction
duct
head
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP09787822.7A
Other languages
German (de)
English (en)
Other versions
EP2462025A1 (fr
Inventor
Francesco Maria Bernardi
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.)
Tissue Machinery Co SpA
Original Assignee
Tissue Machinery Co 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 Tissue Machinery Co SpA filed Critical Tissue Machinery Co SpA
Publication of EP2462025A1 publication Critical patent/EP2462025A1/fr
Application granted granted Critical
Publication of EP2462025B1 publication Critical patent/EP2462025B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/06—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it
    • 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
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/04—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied
    • B65B31/043—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied the nozzles acting horizontally between an upper and a lower part of the container or wrapper, e.g. between container and lid
    • 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
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/26—Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
    • B65B51/30—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes
    • B65B51/303—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes reciprocating along only one axis
    • 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

Definitions

  • the present invention relates to a folding assembly, particularly for packaging machines.
  • the purpose of this operation is to obtain a wrapping that contains the packs and can be stored and transported easily before reaching the shelves where the end consumer can find it.
  • the packs of rolls slide sequentially and with appropriate spacing along the processing line, while the film is folded and wrapped around them, thus forming in an intermediate step a duct that is made to substantially adhere externally to said packs.
  • a sort of chamber filled with air is thus formed which is delimited by two opposite faces of the two groups and by the film itself (in an upper region, in a lower region and on the sides).
  • a cutter finally cuts the flaps, allowing their complete adhesion to the groups of packs, the first of which can be removed from the line while the subsequent one advances and reaches the position occupied previously by the other one in order to prepare itself for the start of a new cycle.
  • suitable angular elements arranged along the line keep the duct formed by the film slightly spaced from the groups of packs, so as to define a gap from which air can exit during heat-sealing.
  • the film is frequently aspirated by the tube, accordingly entailing the risk of breakages and deformations or more simply of an obstruction of the inlet, with consequent malfunction.
  • the aim of the present invention is to solve the drawbacks described above, by providing an assembly which, during folding and heat-sealing operations, ensures optimum suction of the air from the chamber comprised between two successive groups of packs of rolls without the danger of occlusions during said suction.
  • an object of the invention is to provide an assembly that is suitable for lines for packaging groups of packs that operate continuously, in which the elements for movement, folding and heat-sealing are capable of following and accompanying the movement of said packs.
  • Another object of the invention is to provide a folding assembly that is suitable for applications requiring high productivity.
  • Another object of the invention is to provide a folding assembly that can be obtained easily starting from commonly commercially available elements and materials.
  • Another object of the invention is to provide a folding assembly that has a low cost and is safe in application.
  • a folding assembly according to the invention is particularly suitable for application on packaging machines of various types and comprises means for folding a film, which are adapted to shape it like a duct 2 that is wrapped substantially hermetically around at least one first product 3 and a subsequent second product 4 to be packaged.
  • the first product 3 and the second product 4 can be groups of packs of rolls of paper of the tissue type, i.e., toilet paper, absorbent paper or the like: the packs of rolls (i.e., the packaging unit in which the rolls are sold to the public) are in fact designed to be wrapped in a film of a material such as plastics or paper after being grouped according to a predefined configuration.
  • the wrapping of the groups of packs in the film in fact makes it possible to facilitate operations for transport and storage prior to sale.
  • the packs of rolls can move along the handling line, and two successive groups of packs are thus arranged in the arrangement of the accompanying figures: for the sake of convenience, reference shall be made to them as first product 3 and second product 4 and the cycle will be described with respect to them.
  • first product 3 and the second product 4 can move (continuously or with intermittent behavior) sequentially along a processing line and are spaced by a gap that forms a sort of chamber 5 (as is clearly evident from Figure 1 ), which is thus delimited by the rear face 3a (with respect to the advancement direction) of the first product 3 and by the front face 4a of the second product 4, as well as by parts of the duct 2.
  • a suction device 6 is functionally associated with the chamber 5, under conditions that will be described hereinafter, to evacuate the air comprised within the chamber 5, such evacuation being necessary during subsequent steps of the packaging cycle that provide for the substantial collapse of the chamber 5 (one possible step is also described in detail in the continuation of the present description).
  • the suction device 6 comprises a channel that is interposed between the duct 2 and at least the second product 4; such channel is provided with a flexible end portion, which protrudes inside the chamber 5 and is in turn provided with at least one suction inlet for the air contained in the chamber 5.
  • the end portion of the channel has at least two suction inlets, which operate along at least two separate and possibly parallel axes, in order to ensure optimum suction without the risk of occlusion by said film.
  • the channel substantially consists of a tube 7, which surmounts the second product 4 and is interposed-between it (and more specifically rests on its upper face 4b) and the duct 2.
  • the end portion of the channel consists of an appendage 7a of the tube 7, which indeed protrudes, as can be seen from the accompanying figures, inside the chamber 5 and is provided with the suction inlets.
  • the end portion has a plurality of such inlets, which are distributed according to one among several possible configurations, for optimum suction of the air contained in the chamber 5. Therefore, depending on the specific requirements of the application, it is possible to provide assemblies 1 in which the inlets are distributed according to a plurality of and different predefined configurations which are more or less regular; further, on the appendage 7a such inlets can be oriented according to axes which are parallel or not, and in the latter case can be directed for example partly toward the front face 4a of the second product 4 and partly toward the rear face 3a of the first product 3.
  • the end portion has a surface slot, which is provided according to one among a plurality of possible shapes; said slot thus forms the suction inlets.
  • At least the end portion 7a of the tube 7 substantially consists of a plurality of mutually articulated links 8: accordingly, they form a plurality of inlets directed toward the-chamber 5 and a passage for the air thus aspirated.
  • the folding assembly 1 comprises a heat-sealing element 10, which is provided with a heat-sealing head 11a and with a complementary head 11b, which are arranged on opposite sides of the duct 2.
  • the head 11a and the complementary head 11b can move along at least one first direction that is substantially perpendicular to the line for clamping the duct 2 and heat-sealing the corresponding flaps of film at the chamber 5. It is therefore during the mutual approach of the head 11a and the complementary head 11b that the suction device 6 operates: the chamber 5 in fact collapses, and therefore removal of the air contained therein is required in order to allow heat-sealing.
  • the head 11a and the complementary head 11b also can move in a second direction that is substantially parallel to the handling line. This allows them to accompany the advancement along such line of the first product 3 and of the second product 4 (as mentioned above, in particular in the case of continuous operation).
  • the advancement of the second product 4 after heat-sealing and suction, makes it abut against the end portion of the channel to then lift it (thanks to its flexibility). Accordingly, this allows the passage of the second product 4, while the end portion slides along its upper face 4b until the second product 4 moves beyond it.
  • the advancement occurs of a third product that follows the second one, with the end portion repositioning itself between these-last products (in a new chamber 5), restoring the conditions required for the start of a new wrapping cycle.
  • the operation of the folding assembly according to the invention is as follows.
  • the head 11a and the complementary head 11b which face each other and are initially spaced from the duct 2, move toward it (as in Figure 2 ) until they clamp it on opposite sides at the chamber 5 (as in Figure 3 ).
  • the flexibility of the appendage 7a prevents it from constituting an obstacle to the movement of the packs along the line, as will be described in greater detail shortly hereafter in the present description.
  • the second product 4 can advance along the line, pushing and lifting the appendage 7a (which is flexible); the appendage 7a, as already noted, thus slides along the upper face 4b of the second product 4 and then falls at the rear, thus occupying a new chamber 5 which forms between the second product 4 and a third product (thus allowing the start of a new cycle).
  • the proposed embodiment can thus be applied positively to lines for continuous handling, i.e., lines in which there is a continuous movement of the packs and/or of the elements assigned to their handling, folding and heat-sealing.
  • the head 11a and the complementary head 11b can be optionally provided with the possibility to perform translational motion along the advancement direction, in order to accompany the packs and thus reduce cycle times (by eliminating intermediate stops), while at the same time the suction device 6 ensures air evacuation.
  • the folding assembly according to the invention fully achieves the intended aim, since the choice to resort to a channel provided with an at least partially flexible end portion that protrudes within the chamber and is provided with at least one suction inlet makes it possible to obtain optimum air suction without the danger of occlusion of the channel.
  • the materials used, as well as the dimensions, may be any according to requirements and to the state of the art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Claims (4)

  1. Ensemble de pliage (1), en particulier pour des machines d'emballage, comprenant des moyens pour plier un film afin de le former comme un conduit (2) qui est enroulé sensiblement hermétiquement autour d'au moins un premier produit (3) et un deuxième produit (4) consécutif à emballer, le premier produit (3) et le deuxième produit (4) étant séquentiellement mobiles le long d'une ligne de traitement et espacés par un espace qui forme une chambre (5), un dispositif d'aspiration (6) étant fonctionnellement associé à ladite chambre (5) afin d'évacuer l'air compris à l'intérieur de cette dernière, ledit dispositif d'aspiration (6) comprenant un canal qui est intercalé entre ledit conduit (2) et au moins le deuxième produit (4), une partie d'extrémité dudit canal, qui fait saillie à l'intérieur de ladite chambre (5), étant prévue le long de sa surface avec au moins une entrée d'aspiration pour l'air contenu dans ladite chambre (5) ; caractérisé en ce que ledit canal se compose sensiblement d'un tube (7) qui surmonte le deuxième produit (4) et est intercalé entre ce dernier et ledit conduit (2), ladite partie d'extrémité dudit canal étant au moins partiellement flexible et se composant d'un appendice (7a) dudit tube (7) qui fait saillie à l'intérieur de ladite chambre (5) et est prévu avec lesdites entrées d'aspiration ; au moins ledit appendice (7a) dudit tube (7) se composant sensiblement d'une pluralité de liaisons (7) mutuellement articulées qui forment une pluralité desdites entrées qui sont dirigées vers ladite chambre (5) et un passage pour l'air aspiré à partir de celle-ci.
  2. Ensemble de pliage selon la revendication 1, caractérisé en ce que ladite partie d'extrémité dudit canal à au moins deux desdites entrées d'aspiration, lesdites entrées fonctionnant le long d'au moins deux axes distincts et éventuellement parallèles.
  3. Ensemble de pliage selon la revendication 1 ou 2, caractérisé en ce qu'il comprend un élément thermocollant (10) qui est prévu avec une tête thermocollante (11a) et avec une tête complémentaire (11 b) qui sont agencées sur les côtés opposés dudit conduit (2) et peuvent se déplacer le long d'au moins une première direction qui est sensiblement perpendiculaire à ladite ligne, afin de serrer ledit conduit et thermocoller les rabats correspondants du film au niveau de ladite chambre (5), ledit dispositif d'aspiration (6) fonctionnant pendant l'approche mutuelle de ladite tête (11a) et de ladite tête complémentaire (11b).
  4. Ensemble de pliage selon une ou plusieurs des revendications précédentes, caractérisé en ce que ladite tête (11a) et ladite tête complémentaire (11 b) peuvent se déplacer le long d'une seconde direction qui est sensiblement parallèle à ladite ligne de manipulation, afin d'accompagner l'avancement, le long de ladite ligne, du premier produit (3) et du deuxième produit (4), l'avancement du deuxième produit (4), après le thermocollage et l'aspiration, amenant ledit deuxième produit (4) à venir en butée contre ladite partie d'extrémité et le soulever, permettant ainsi le passage du deuxième produit (4), l'avancement d'un troisième produit qui suit au deuxième produit, et le repositionnement de ladite partie d'extrémité entre lesdits deuxième et troisième produits.
EP09787822.7A 2009-08-03 2009-08-03 Ensemble de pliage, en particulier pour des machines d'emballage Active EP2462025B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2009/000356 WO2011016058A1 (fr) 2009-08-03 2009-08-03 Ensemble de pliage, en particulier pour des machines d'emballage

Publications (2)

Publication Number Publication Date
EP2462025A1 EP2462025A1 (fr) 2012-06-13
EP2462025B1 true EP2462025B1 (fr) 2014-03-05

Family

ID=41343320

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09787822.7A Active EP2462025B1 (fr) 2009-08-03 2009-08-03 Ensemble de pliage, en particulier pour des machines d'emballage

Country Status (2)

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EP (1) EP2462025B1 (fr)
WO (1) WO2011016058A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR112018005912B1 (pt) * 2015-11-10 2022-06-21 Cryovac, Llc Dispositivo para esvaziar o gás de uma embalagem em um aparelho de embalar, processo de embalar para uso com o dispositivo, e aparelho de embalar

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3958390A (en) * 1975-01-02 1976-05-25 Hayssen Manufacturing Co. Packaging
CH610260A5 (fr) * 1977-02-02 1979-04-12 Sig Schweiz Industrieges
EP0607559B1 (fr) * 1992-12-24 1997-03-12 IBARAKI SEIKI MACHINERY COMPANY Ltd. Dispositif pour emballer des objets dans une condition désaérée
FR2703023B1 (fr) * 1993-03-25 1995-05-24 Grace Sa Procédé de conditionnement de produits quelconques dans des récipients tels que par exemple des barquettes et machine comportant application de ce procédé.
DE10315324A1 (de) * 2003-04-04 2004-10-14 Kamps Brot- Und Backwaren Gmbh & Co. Kg Vorrichtung zur Konservierung von Lebensmitteln, insbesondere Backwaren
KR100584851B1 (ko) * 2003-05-06 2006-05-30 안준영 교체용 내부 백이 수납되는 이중 진공포장지 및 진공포장시스템

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Publication number Publication date
EP2462025A1 (fr) 2012-06-13
WO2011016058A1 (fr) 2011-02-10

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