EP1183183A2 - Procede et appareil de fabrication d'emballages de type enveloppe autour d'un article au moyen de soudage de thermoplastique - Google Patents

Procede et appareil de fabrication d'emballages de type enveloppe autour d'un article au moyen de soudage de thermoplastique

Info

Publication number
EP1183183A2
EP1183183A2 EP00954410A EP00954410A EP1183183A2 EP 1183183 A2 EP1183183 A2 EP 1183183A2 EP 00954410 A EP00954410 A EP 00954410A EP 00954410 A EP00954410 A EP 00954410A EP 1183183 A2 EP1183183 A2 EP 1183183A2
Authority
EP
European Patent Office
Prior art keywords
gripper
web
welding
article
transversal
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
EP00954410A
Other languages
German (de)
English (en)
Other versions
EP1183183B1 (fr
EP1183183B2 (fr
Inventor
Luca Manini
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.)
Macchine Tessili Circolari MATEC SpA
Original Assignee
Sra 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11394398&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1183183(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sra Srl filed Critical Sra Srl
Publication of EP1183183A2 publication Critical patent/EP1183183A2/fr
Publication of EP1183183B1 publication Critical patent/EP1183183B1/fr
Application granted granted Critical
Publication of EP1183183B2 publication Critical patent/EP1183183B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • B65B9/06—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
    • B65B9/08—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 in a web folded and sealed transversely to form pockets which are subsequently filled and then closed by sealing
    • B65B9/093—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 in a web folded and sealed transversely to form pockets which are subsequently filled and then closed by sealing the web having intermittent motion

Definitions

  • the present invention relates to a method for packaging articles coming from production lines by means of an envelope made of a film fed continuously that can be welded thermoplastically.
  • the method is suitable for packaging articles such as articles of underwear, like for example stockings, collants, etc.
  • the invention relates furthermore to a packaging apparatus that carries out this method. Description of the prior art
  • Automatic packaging lines are known suitable to form an envelope-like wrapper around a substantially flat article. These packaging lines have the object of making faster the introduction between them of an article to package into an envelope, with respect to the manual introduction, whose production rate is low.
  • the welding lines made for example by a metal stretched blade heated electrically, cut at the same time also the two films at the edges of the envelope.
  • CQiTOMATION COPY even if of minimum thickness, causes an increase of the size of the envelope that is the sum of the size of the mechanical element and of the article.
  • thermoplastic cutting/welding means transversally to the web; opening apart from each other the wings and introducing between them an article being packaged opposite to the closed longitudinal continuous edge;
  • thermoplastic cutting/welding means - arranging the article along the web between the thermoplastic cutting/welding means and the transversally closed front end; - at the thermoplastic cutting/welding means, transversal pinching of the folded web by means of a transversal gripper, leaving the web free of sliding through the gripper; - pulling the web upstream of the transversal gripper and drawing back the web that slides through the gripper until a front edge of the article contacts the front closed end;
  • any element remains for supporting the article, which hits against the transversal gripper using the gripper same as blocking means .
  • the step of opening apart from each other the wings and introducing the articles being packaged is carried out in a opening station located upstream of the thermoplastic cutting/welding means, by means of the further steps of: in the opening station introducing on a support tray between the wings the articles being packaged;
  • the step of further drawing back the web, until a rear edge of the article contacts the transversal gripper, without the presence of further mechanical elements comprises a step of stretching the web between the transversal gripper and the front closed end with the slight resilient deformation of the article, whereby cutting and welding are carried out on a line that is located shifted from the front closed end so that after the raising of the gripper, after that cutting and welding have been made, the film is close to the article that is again in condition not deformed elastically without causing it to fold or crease.
  • the transversal cutting and welding of the web can be made with the steps of :
  • thermoplastic cutting/welding means through the web between the gripper and the counter- gripper for carrying out the transversal cutting and welding;
  • the continuous longitudinal closed edge of the web can be obtained: by longitudinal folding a single continuous web of double width; or
  • thermoplastic cutting/welding means arranged transversally to the means for feeding/drawing back the web;
  • thermoplastic cutting/welding means - means for closing the gripper on the web leaving it free of sliding if pulled back from the means for drawing back;
  • thermoplastic cutting/welding means for dragging away a formed envelope located downstream of the thermoplastic cutting/welding means around the article after two transversal cuts of a portion of the web.
  • the means for opening apart the wings are between the means for feeding/drawing back and the thermoplastic cutting/welding means, the following being furthermore provided: support means of the article at the level of the means for opening apart the wings, the support means being located between the wings of the web; - means for moving the support means along the web between the means for opening apart the wings and a position located downstream of the thermoplastic cutting/welding means and viceversa, sliding through the wings .
  • transversal parallel counter-gripper are provided upstream of the gripper, the thermoplastic cutting/welding means being located between the gripper and the counter-gripper.
  • the gripper and the counter-gripper are formed by a couple of lower parallel jaws and a couple of upper parallel jaws, means being provided for raising the lower jaws and for lowering the upper jaws, the means for raising and for lowering carrying out in turn the closure of the gripper and then of the counter-gripper, the means for drawing back being associated to electronically programmable means that pull back the web of a predetermined length between the closure of the gripper and then of the counter-gripper.
  • a device for closing automatically the flap of an envelope formed as above described comprises a guiding support arranged at the side of the means for dragging away the envelopes, on the guiding support a first and a second arm sliding having at an end respectively a first and second gripping finger of the flap, cam means being provided for causing the fingers to follow a respective predetermined trajectory, whereby following the trajectory the first and second finger move above and under the flap and following the trajectory grip it slidingly bringing it on the envelope with the interposition of a adhesive layer.
  • the support is arranged inclined with respect to the plane of the envelope, whereby the trajectory of the arms is rising for at least a portion.
  • - figure 1 shows a cross sectional longitudinal view of an apparatus according to the invention that carries out the method form making envelope packages by means of thermoplastic welding;
  • - figure 2 shows a top plan view of the apparatus of figure 1;
  • thermoplastic cutting/welding means of the apparatus of figures 1 and 2 shows an elevational side transversal view of the thermoplastic cutting/welding means of the apparatus of figures 1 and 2;
  • - figure 4 shows a view from below of the support of the thermoplastic cutting/welding means of figure 3;
  • FIG. 5 and 6 show the apparatus of figure 1 in two different steps of the method according to the invention; figure 7-11 show a device for closing the flap of the envelope-like package.
  • an apparatus for packaging articles 10 coming from production lines 20 uses a web 30 of continuous film that can be welded thermoplastically having two continuous wings 31, 32 overlapping each other and a longitudinal edge 33 along which the wings 31 and 32 are foldably connected. Free edge 34 of lower flap 31 exceeds outwardly more than the edge free 3.5 of the upper flap 32 in order to provide, eventually, an envelope 36 (figure 2) with a closure flap 37.
  • the apparatus comprises a feeding/drawing back system 40 in a direction 41 having a conveyor 42 of the web operated by relative driven rollers 44 and 45. Downstream of it a conveyor 46 is provided operated by a roller 47, for dragging away an envelope 36 formed after two transversal cuts following web 30 as described hereinafter.
  • a unit is provided of thermoplastic welding 50 having a support 51, visible also in figures 3, 4, 5 and 6.
  • the thermoplastic welding is carried out by means of an electrical blade resistance 52 located between a gripper 53 and a counter-gripper 54, formed by relative upper jaws that are aligned vertically with lower jaws 53a and 54a.
  • the upper jaws of the gripper and counter-gripper 53 and 54 are mounted on guiding sticks 53b and 54b resiliently sliding on a support 55, shown also in figure 5.
  • Support 55 to which cutting and welding blade 52 is integral, is mounted on a slide 56 that moves on guide 56a integral to support frame 51.
  • Two opposite pneumatic cylinders, 57 and 58, respectively integral to the frame 51 and to the support 55, are used for lowering in two times the support 55.
  • upper jaws 53 and 54 of the gripper and of the counter-gripper are shifted in height and the jaw of the gripper is lower than that of the counter-gripper.
  • the lower jaws 53a and 54a can be raised towards the above, by means of a raising unit 59, being parallel to each other.
  • an opening device 21 is provided at the end of the line 20, shown only in the final part, comprising two jaws distanced in height 21a and 21b on which the lower wing 31 and that upper wing 32 respectively slide, in order to keep them open and allowing the introduction of the article 10 by an introducing device 22 not shown in detail.
  • the article 10 can be a desired article to be packaged, which can be for example a collant with the relative inner support cardboard and a outer V-folded sheet with pictures printed thereon for containing it such as a sandwich.
  • the article 10 is inserted between the two jaws 21a and 21b on a support tray 23, integral to a lateral carriage 24 operated by motor 25 and belt 26.
  • the tray 23 can move from the position indicated with the continuous line in figure 1 up to the position indicated with a dotted line, carrying the article 10 up to reaching with its front edge a transversally closed end 38 of the web 30.
  • tray 23 When tray 23 is in the forward position, that it has reached moving through the counter-gripper 54 and the gripper 53, the article 10 is passed between the two wings 31 and 32 maintaining them in the shape indicated with a dotted line, and eventually slightly pushing the article 10 against the closed transversal end 38 of web 30. Then, according to the invention, the tray 23 moves back leaving the article 10 in this position and returns up to the starting position passing through the jaws 21a and 21b of the opening device 21, for receiving another article to be packaged. As shown in figure 4, then, the first actuator 57 pushes the support 55 towards below along the guide 56a, until the upper jaw of the gripper 53 is closed on the lower jaw 53a, which in the meantime has raised itself. The upper shroud of the counter-gripper 54, being shifted in height, instead, is not yet closed. The guide sticks 53b and 54b are not stressed.
  • the envelope 36 formed (figure 2) has front edge and rear edge 10a and 10b of the article 10 that are located at a direct contact with the welding lines 38 and 38b, achieving the desired object.
  • the conveyor for dragging away 46 brings forward the envelope 36 in an automatic station 49, shown diagra matically in figure 2, and described in more detail in figures from 7 to 11 for the closure of flap 37, or alternatively in a station of manual closure.
  • the device 49 for closing automatically the flap 37 of the envelope 36 formed as above described, comprises a guiding support 60 arranged at the side of the conveyor web 46 that carries out the dragging away of the envelopes 36.
  • a carriage 61 slides to which are hinged a first and a second arm 62 and 63 having at an end respectively a first and a second finger 64 and 65 for gripping the flap 37.
  • the second arm 63 is connected through a sliding member to a cam 66, integral to the support 60.
  • a pawl 67 has the function of opening fingers 64 and 65 when the arms 62 and 63 are located in a lowered position.
  • the reciprocation of the carriage 61 is given by a connecting rod 68 operated by a crank 60 operated by a motor 70.
  • first and second finger 64 and 65 move above and under the flap 37 when the arms 62 and 63 are in contact with the pawl 67 (figure 7) . Then, while being brought forward by the connecting rod 68 is they slidingly close on the flap 37 (figure 8) raising it from the conveyor for the web, rotating it and arranging it (figure 9) correctly on the envelope with the interposition of an adhesive layer and finally going further on until it is extracted from the fingers same (figure 10) .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Making Paper Articles (AREA)

Abstract

La présente invention concerne un procédé permettant, d'une manière complètement automatique, de former des enveloppes de la taille de l'article sans laisser d'espace entre l'article et la ligne de soudure. Le procédé consiste à disposer, dans une direction d'alimentation, au moins une nappe (30) de film continu qui peut subir un soudage thermoplastique selon deux rabats continus, se recouvrant l'un l'autre, de manière à présenter une ligne longitudinale continue fermée. La nappe pliée (38) comporte une extrémité avant fermée préalablement de manière transversale. Des moyens de découpe et de soudage de thermoplastique sont mis en oeuvre (52) transversalement à la nappe. Après avoir écarté l'un de l'autre les rabats opposés à l'extrémité longitudinale fermée continue (33) un article (10) est inséré aux fins d'emballage et disposé à cette fin entre les moyens de découpe/soudage (52) et l'extrémité avant fermée (38). Puis, au niveau des moyens de découpe/soudage (52), on effectue un resserrement transversal (53) de la nappe pliée, au moyen d'un dispositif de préhension transversal (53), laissant la nappe libre de glisser à travers ce dispositif. On tire alors la nappe en amont (45) du dispositif de préhension transversal et on tire vers l'arrière la nappe qui glisse au travers du dispositif de préhension jusqu'à ce qu'une extrémité avant de l'article rentre en contact avec l'extrémité avant fermée. On tire encore une fois vers l'arrière la nappe jusqu'à ce qu'une extrémité arrière de l'article rentre en contact avec le dispositif de préhension transversal. Ensuite on découpe et on soude transversalement la nappe au voisinage du dispositif de préhension transversal, ce qui résulte en la formation d'une enveloppe formée et fermée sur trois côtés autour de l'article. Dans cette étape, il n'y a aucun élément supportant l'article contre le dispositif de préhension, ce dispositif servant de moyen de blocage. Enfin, l'enveloppe est éloignée et la nappe tirée, les moyens de découpe et de soudage permettant de créer dans la nappe une extrémité avant fermée.
EP00954410A 1999-05-21 2000-05-22 Procede et appareil pour emballer des articles au moyen d'une enveloppe en film thermoplastique Expired - Lifetime EP1183183B2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT1999PI000031A IT1309850B1 (it) 1999-05-21 1999-05-21 Metodo ed apparecchiatura per creare confezioni a busta mediantetermosaldatura
ITPI990031 1999-05-21
PCT/EP2000/004659 WO2000076848A2 (fr) 1999-05-21 2000-05-22 Procede et appareil de fabrication d'emballages de type enveloppe autour d'un article au moyen de soudage de thermoplastique

Publications (3)

Publication Number Publication Date
EP1183183A2 true EP1183183A2 (fr) 2002-03-06
EP1183183B1 EP1183183B1 (fr) 2003-08-27
EP1183183B2 EP1183183B2 (fr) 2009-09-09

Family

ID=11394398

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00954410A Expired - Lifetime EP1183183B2 (fr) 1999-05-21 2000-05-22 Procede et appareil pour emballer des articles au moyen d'une enveloppe en film thermoplastique

Country Status (5)

Country Link
EP (1) EP1183183B2 (fr)
AU (1) AU6687500A (fr)
ES (1) ES2207541T3 (fr)
IT (1) IT1309850B1 (fr)
WO (1) WO2000076848A2 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT252819B (de) † 1963-09-05 1967-03-10 Electronic Ges Fuer Hochfreque Vorrichtung zum Verpacken von flachliegendem, vorzugsweise unsteifem Packgut
DE2317257C2 (de) † 1973-04-06 1983-07-07 Stahlecker, Fritz, 7347 Bad Überkingen Verfahren und Vorrichtung zum Einbeuteln von faltbarem Packgut, insbesondere von Textilien
US4205504A (en) * 1978-09-01 1980-06-03 Gregg Engineering Corp. Method and device for making envelopes from a continuous web and including the stuffing and sealing of those envelopes
US4548018A (en) * 1984-06-29 1985-10-22 John Wojnicki Apparatus for horizontally forming, filling and sealing film pouch material
DE4315284A1 (de) * 1993-05-07 1994-11-10 Geimuplast Mundt Kg Peter Verfahren und Vorrichtung zum Einbringen von Diapositiv-Rähmchen oder dergleichen in eine Eintaschfolie
IT1304430B1 (it) † 1998-11-30 2001-03-19 Carmelo Angelo Cortese Metodo e dispositivo per il tensionamento del nastro di incarto inmacchine per il confezionamento di articoli pieghevoli.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0076848A2 *

Also Published As

Publication number Publication date
EP1183183B1 (fr) 2003-08-27
WO2000076848A3 (fr) 2001-05-31
WO2000076848A2 (fr) 2000-12-21
ITPI990031A1 (it) 2000-11-21
IT1309850B1 (it) 2002-02-05
AU6687500A (en) 2001-01-02
EP1183183B2 (fr) 2009-09-09
ES2207541T3 (es) 2004-06-01

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