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EP0860359B1 - Procédé et dispositif pour fabriquer des paquets de produits en vrac utilisant du film scellable - Google Patents

Procédé et dispositif pour fabriquer des paquets de produits en vrac utilisant du film scellable Download PDF

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Publication number
EP0860359B1
EP0860359B1 EP98830075A EP98830075A EP0860359B1 EP 0860359 B1 EP0860359 B1 EP 0860359B1 EP 98830075 A EP98830075 A EP 98830075A EP 98830075 A EP98830075 A EP 98830075A EP 0860359 B1 EP0860359 B1 EP 0860359B1
Authority
EP
European Patent Office
Prior art keywords
packs
advance
film
pack
sealing
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.)
Expired - Lifetime
Application number
EP98830075A
Other languages
German (de)
English (en)
Other versions
EP0860359A1 (fr
Inventor
Ugo Chiti
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.)
Sasib Packaging Italia SRL
Original Assignee
Sasib Packaging Italia SRL
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 Sasib Packaging Italia SRL filed Critical Sasib Packaging Italia SRL
Publication of EP0860359A1 publication Critical patent/EP0860359A1/fr
Application granted granted Critical
Publication of EP0860359B1 publication Critical patent/EP0860359B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65B55/00—Preserving, protecting or purifying packages or package contents in association with packaging
    • B65B55/24—Cleaning of, or removing dust from, containers, wrappers, or packaging ; Preventing of fouling
    • 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
    • B65B19/00—Packaging rod-shaped or tubular articles susceptible to damage by abrasion or pressure, e.g. cigarettes, cigars, macaroni, spaghetti, drinking straws or welding electrodes
    • B65B19/34—Packaging other rod-shaped articles, e.g. sausages, macaroni, spaghetti, drinking straws, welding electrodes

Definitions

  • the present invention relates to a machine for packaging a loose product, for example a foodstuff, and in particular (but not exclusively) an elongated product such as, for example, long pasta, in a pack formed by sealing and cutting a continuous film.
  • a loose product for example a foodstuff
  • an elongated product such as, for example, long pasta
  • the machines used to package long pasta have a tube or channel into which predetermined amounts of product are unloaded and are then pushed into a tubular film which is formed around the product advancing channel using sheet film.
  • Located at the exit to the channel are a first and a second means for advancing the packs being formed, with a sealing and cutting jaw positioned between the said means and forming transverse sealing and cutting lines in the film in order to form the packs of product one after the other.
  • the feeding, weighing and loading operations involved can cause the product to break, forming small pieces or residues. These are often left behind in the area where the sealing and cutting jaws operate, with the result that the front and rear sealing lines of each pack may include foodstuff residues. This not only constitutes a disadvantage from a technical viewpoint, it also ruins the look of the product and may put the consumer off choosing it.
  • the object of the present invention is to provide a packaging machine and method that do away with the disadvantages described above.
  • the present invention basically provides a machine for packaging loose products of the type referred to above - comprising first and second means for advancing the packs being formed along an approximately horizontal path, and in which a cutting and sealing member is located between the first and the second advance means - in which the second advance means can be inclined downwards relative to the path of advance of the packs being formed, its motion being synchronized with the motion of the cutting and sealing member in such a way that the pack is temporarity inclined downwards before the cutting and sealing member starts acting. It is thus possible to incline the pack being formed once the loose product has been inserted therein and before the rear end of the pack is sealed and cut. In this way, any product residues found in the area where the sealing and cutting are to take place, slide down to the bottom of the pack under the effect of gravity and do not obstruct the area in which the sealing and cutting members operate.
  • a film support element is provided underneath the path of advance of the packs, between the first advance means and the cutting and sealing member.
  • This support element can be raisable so as to be moved from a retracted position, beneath the path of advance, into a position that approximately corresponds to the path of advance of the packs being formed.
  • the support element can consist of a first portion of a clamp having two elements, one placed above and the other below the path of advance of the packs.
  • the clamp is closed at the same time as the pack being formed is inclined downwards, thereby clamping the tubular film in an intermediate position between the sealing and cutting member and the area for loading the loose product.
  • the invention also relates to a method for packaging a loose product in packs formed by sealing and cutting a continuous film, comprising the following stages:
  • the method is characterized in that the pack being formed is temporarily inclined downwards before the second sealing line is formed and cut, so that any product residues in the sealing area slide away under the effect of gravity.
  • the machine-denoted overall by the reference 1 - has a loading area 3 into which weighed batches of product to be packaged are unloaded one after the other, collecting in a subjacent horizontal tube or channel 5.
  • a piston 7 which has a reciprocating motion as shown by the arrow f7 and is controlled by means of, for example, a pusher element 9 attached to a belt 11 that runs around two pulleys 13, 15, one of which is driven by a brushless motor 17 which imparts a reciprocating motion to the belt 11.
  • the dashed lines show the position 7X in which the piston 7 is fully retracted and in which it is located when the loose product is unloaded into the channel 5.
  • a shaping collar 19 Positioned around the channel 5 is a shaping collar 19, of a type known per se and not described in detail, around which is shaped a sealable plastic film F which is unwound from a reel B located in the bottom of the machine (on the right-hand side in the figure).
  • a longitudinal sealing unit 23 Located downstream of the shaping collar 19, which folds the flat film so as to join its longitudinal edges, is a longitudinal sealing unit 23 which seals the longitudinal edges of the film F in order to form a tubular film which is then sealed and cut along transverse lines to form the product packs once the product to be packaged has been inserted.
  • the reference 25 generically denotes the station in which the film is sealed and cut transversely to form the individual packs.
  • a first means for advancing the packs being formed consisting of a pair of flexible conveyors or belts 27 which have the dual function of advancing the packs being formed and of entraining the film F so as to unwind it from the reel B and pull it through the shaping collar 19 and through the longitudinal sealing unit 23.
  • a second feed means consisting of a lower conveyor 29 and an upper belt 31. Both these elements also have the function of advancing the packs being formed and entraining the film.
  • a pair of sealing and cutting jaws 33 and 35 which are opened and closed by a cylinder and piston actuator 37 via lever mechanisms denoted overall by the reference 39 and of a type known per se.
  • the advance means 29, which consists of a flexible conveyor or equivalent device, is mounted so that it can pivot downwards and assume the inclined position 29X indicated by dashed lines in Fig. 1.
  • This movement is controlled by a cylinder and piston actuator 41.
  • Fig. 4 shows the moving element 43 on which are mounted the rollers 45, 47 around which the conveyor 29 travels.
  • the moving element 43 is hinged about an axis A-A located between the sealing and cutting jaws 33, 35 and the advance means 27, for reasons which will be explained below.
  • Jaws 33, 35, each of which has a pair of sealing bars 33A, 33B and 35A, 35B are shown in greater detail in Fig. 4 and in the remaining Figs 3 and 5, a cutting blade 34 being positioned between the sealing bars 33A, 33B and engaging in a channel 36 formed between the sealing bars 35A, 35B.
  • a clamp 51 Positioned between the advance means 27 and the sealing and cutting jaws 33 and 35 is a clamp 51 formed by two portions 51A, 51B, the first placed above and the other below the path of advance of the packs in the machine.
  • the clamp 51 is opened and closed by a cylinder and piston actuator 53, diagrammatically indicated in Fig. 1, via a suitable lever mechanism which is not shown.
  • Fig. 2 shows the position of the machine when a pack C 0 of product P has been formed and is located between the belt 31 and the conveyor 29.
  • the sealing and cutting jaws 33, 35 are in the closed position and have just formed a rear transverse sealing line in the pack C 0 and a front transverse sealing and cutting line in the next pack being formed, denoted C 1 .
  • the latter is located between the belts 27.
  • the product P1 which is to be packaged in the pack C 1 has been inserted by the piston 7 so that it takes up all the available space between the piston 7 and the front sealing line formed by the sealing bars 33B, 35B of the jaws 33, 35.
  • Fig. 3 shows the next stage, in which the sealing and cutting jaws 33, 35 have been opened and, by activating the conveyor 29 and the belts 27, 31, the film has been made to advance by a distance equivalent to the length of a pack.
  • the pack being formed, denoted C 1 is now between the conveyor 29 and the belt 31, in a position ready to be transversely sealed at the rear and cut to separate the pack C 1 from the next pack.
  • the piston 7 has been retracted so as to allow a new batch of product to be loaded into the tube or channel 5.
  • pieces or residues of product indicated diagrammatically by the letter R, may be found in the area in which the jaws 33, 35 operate.
  • the conveyor 29 In order to remove the pieces and residues from the sealing and cutting area, the conveyor 29 is made to pivot downwards so as to assume the inclined position indicated in Fig. 4. Since the pivoting axis A-A of the conveyor 29 is located upstream of the sealing and cutting jaws 33, 35, inclining the pack downwards allows all the residues found in the sealing and cutting area to slide away.
  • the clamp 51 In order to keep the film F in the correct position in the area upstream of the position of the sealing jaws, the clamp 51 has been closed, causing the portions 51A, 51B to meet approximately on the path of advance of the packs being formed.
  • the lower portion 51B therefore forms a support for the film F, preventing it from being pulled downwards in the area in which the belts 27 operate.
  • the film is also held in place by the upper portion 51A of the clamp, even though, in theory, the lower support formed by the portion 51B should be sufficient.
  • the machine then returns from the position shown in Fig. 4 to that shown in Fig. 5 (corresponding to that of Fig. 2) by closing the closing and cutting jaws 33, 35 and raising the conveyor 29, at which point the piston 7 can advance and push a new batch of product P2 towards the closed jaws 33, 35, the clamp 51 having been opened in the meantime.
  • the pack C 1 has been completed, the rear sealing line having been formed by the sealing bars 33A, 35A and cut by the blade 34, and formation of the next pack C 2 containing the product P2 is started between the belts 27.

Landscapes

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

Claims (9)

  1. Machine pour l'emballage d'un produit en vrac dans un sachet formé par soudure et découpe d'un film continu (F) comprenant :
    les moyens (5, 7) pour alimenter le matériau en vrac (P) ;
    les moyens d'alimentation (27) et les moyens de mise en forme (19) pour alimenter ledit film continu (F) à partir duquel les sachets (C0, C1, C2) sont formés :
    les premiers (27) et les seconds moyens (29) pour faire avancer les sachets formés le long d'un trajet approximativement horizontal ; et
    un élément de découpe et de soudure (33, 35) situé entre lesdits premiers (27) et lesdits seconds moyens d'avancement (29) ;
       caractérisée en ce que :
    lesdits seconds moyens d'avancement (29) peuvent être inclinés vers le bas par rapport au trajet de l'avancement des sachets formés, son mouvement descendant étant synchronisé avec le mouvement de l'élément de découpe et de soudure d'une telle façon que le sachet est temporairement incliné vers le bas avant que l'élément de découpe et de soudure commence à fonctionner.
  2. Machine selon la revendication 1, caractérisée en ce qu'un élément (51B) pour supporter le film (F) est positionné au-dessous du trajet de l'avancement ides sachets formés, entre lesdits premiers moyens d'avancement (27) et ledit élément de découpe et de soudure (33, 35).
  3. Machine selon la revendication 2, caractérisée en ce que ledit élément de support (51B) peut être déplacé vers le haut, vers le trajet d'avancement des sachets formés.
  4. Machine selon la revendication 2, caractérisée en ce que ledit élément de support (51B) est composé d'une pince (51) dotée de deux éléments (51A, 51B), le premier placé au-dessus et l'autre au-dessous du trajet d'avancement des sachets formés.
  5. Machine selon la revendication 4, caractérisée en ce qu'au moment où ladite pince (51) se trouve en position fermée, les deux éléments qui la forment, serrent le film approximativement sur le trajet de l'avancement des sachets formés.
  6. Machine selon une ou plusieurs des revendications précédentes, caractérisée en ce que lesdits seconds moyens d'avancement (29) sont composés d'un transporteur continu souple qui avance autour de deux cylindres (45, 47) portés par un élément mobile (43) qui tourne autour d'un axe approximativement horizontal (A-A) situé en amont du transporteur (29) par rapport à la direction de l'avancement des sachets formés.
  7. Procédé pour emballer un produit en vrac en sachets formés par soudure et découpe d'un film continu (F) comprenant les étapes suivantes consistant à :
    réaliser un film tubulaire dans un film plat en joignant ses bords longitudinaux et en les soudant ensemble ;
    créer une première ligne de soudure transversale dans ledit film tubulaire (F) de sorte à fermer l'extrémité avant d'un premier sachet (C1) ;
    insérer une quantité prédéterminée dudit produit (P1) dans ledit premier sachet ;
    faire avancer ledit premier sachet (C1) le long d'un trajet approximativement horizontal ; et
    créer une seconde ligne de soudure transversale dans ledit film de sorte à fermer l'extrémité arrière du sachet (C1) et couper le film de façon transversale de façon à séparer le premier sachet (C1) du film (F),
       caractérisé en ce que le sachet formé est temporairement incliné vers le bas avant la formation de ladite seconde ligne de soudure, de sorte qu'aucun résidu de produit ne s'écoule de la zone de soudure et de découpe sous l'effet de la gravité.
  8. Procédé selon la revendication 7, caractérisé en ce qu'un point (51B) pour supporter le film tubulaire est formé en amont de la zone dans laquelle ladite seconde ligne de soudure doit être formée, ledit point de support (51B) étant situé approximativement sur le trajet de l'avancement des sachets formés, ledit point de support étant rétracté dudit trajet pour permettre l'avancement des sachets formés.
  9. Procédé selon la revendication 8, caractérisé en ce que le film tubulaire qui forme les sachets est serré au dit point de support.
EP98830075A 1997-02-21 1998-02-19 Procédé et dispositif pour fabriquer des paquets de produits en vrac utilisant du film scellable Expired - Lifetime EP0860359B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITFI970029 1997-02-21
IT97FI000029A IT1291785B1 (it) 1997-02-21 1997-02-21 Metodo e macchina per la formazione di confezioni di prodotto sfuso con film saldabile

Publications (2)

Publication Number Publication Date
EP0860359A1 EP0860359A1 (fr) 1998-08-26
EP0860359B1 true EP0860359B1 (fr) 2002-10-09

Family

ID=11351949

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98830075A Expired - Lifetime EP0860359B1 (fr) 1997-02-21 1998-02-19 Procédé et dispositif pour fabriquer des paquets de produits en vrac utilisant du film scellable

Country Status (5)

Country Link
EP (1) EP0860359B1 (fr)
BR (1) BR9800644A (fr)
DE (1) DE69808530T2 (fr)
ES (1) ES2182257T3 (fr)
IT (1) IT1291785B1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1314830B1 (it) 2000-05-17 2003-01-16 Sasib Packaging Italia Srl Macchina confezionatrice per prodotti sfusi di forma allungata, comepasta alimentare lunga o simili
ES2647631T3 (es) * 2014-10-24 2017-12-22 Altopack S.P.A. Máquina de envasado para pasta larga o productos similares
CN105539934B (zh) * 2016-01-18 2017-08-04 广东标华科技有限公司 一种套膜包装机的拉套膜装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1498142A (fr) * 1966-11-03 1967-10-13 Parisienne Des Usines Holweg S Machine pour l'emballage automatique de produits
DE2734526A1 (de) * 1977-07-30 1979-02-08 Bosch Gmbh Robert Kontinuierlich arbeitende einwickelmaschine

Also Published As

Publication number Publication date
DE69808530D1 (de) 2002-11-14
ITFI970029A0 (it) 1997-02-21
EP0860359A1 (fr) 1998-08-26
DE69808530T2 (de) 2003-06-18
BR9800644A (pt) 1999-09-14
ITFI970029A1 (it) 1998-08-21
IT1291785B1 (it) 1999-01-21
ES2182257T3 (es) 2003-03-01

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