EP1449771A1 - Methode et appareil pour la fixation de l'extrémité du film étirable pour charges de palette - Google Patents

Methode et appareil pour la fixation de l'extrémité du film étirable pour charges de palette Download PDF

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Publication number
EP1449771A1
EP1449771A1 EP04001541A EP04001541A EP1449771A1 EP 1449771 A1 EP1449771 A1 EP 1449771A1 EP 04001541 A EP04001541 A EP 04001541A EP 04001541 A EP04001541 A EP 04001541A EP 1449771 A1 EP1449771 A1 EP 1449771A1
Authority
EP
European Patent Office
Prior art keywords
wrapping
tail end
pocket
gripper
film
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.)
Withdrawn
Application number
EP04001541A
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German (de)
English (en)
Inventor
Danica Pieri
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.)
Pieri Srl
Original Assignee
Pieri 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 Pieri Srl filed Critical Pieri Srl
Publication of EP1449771A1 publication Critical patent/EP1449771A1/fr
Withdrawn legal-status Critical Current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
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/02—Wrapping articles or quantities of material, without changing their position during the wrapping operation, e.g. in moulds with hinged folders
    • B65B11/025—Wrapping articles or quantities of material, without changing their position during the wrapping operation, e.g. in moulds with hinged folders by webs revolving around stationary articles

Definitions

  • the invention concerns an apparatus and the associated method and system for fixing, without welding, the tail end of wrappings of palletized loads, formed using stretch film and/or other elastic and/or plastic material and using any wrapping machine of the known type.
  • the invention intends to overcome this and other limitations of the known art, using the following new method.
  • the tail end of the wrapping film, gathered in a bundle, is gripped in synchronism by a gripper designed to be able to perforate subsequently, by itself or with the aid of suitable means, a middle part of the said pocket formed in the wrapping film and, after this gripper has entered with the tail end inside the pocket, it opens so as to release the said tail end and then exits from the pocket through the entry hole, leaving the tail end inside it.
  • the forward and return movements of this novel gripper are decidedly shorter and therefore faster than those of grippers of the known type which introduce the tail end via the top opening or bottom opening of the pocket.
  • the new method moreover offers the advantage that the tail end of the film is immediately retained with friction by the hole formed in the pocket of film into which it was introduced, this condition not being able to be achieved using the known methods, unless specific means such as pressers, air jets or the like are provided.
  • introduction of the tail end into the pocket is performed along a section of the said pocket which is then acted on by the opposition means during the movement when it is retracted and comes out of the said pocket, so that said means interferes with the tail end of the film in such a way as to smooth it and/or position it correctly inside the pocket during the closing step.
  • PS denotes a possible simplified embodiment of the secondary gripper useful for implementing the method in question, which comprises a rod-shaped body 1, for example with a round cross-section or other suitable cross-section, having a smooth surface, which has pivotably mounted on its end, on one or on respective parallel pivots 2, 2', pointed jaws 3, 3' which, when they are closed as shown in continuous lines, resemble substantially an ogive with a pointed form.
  • the gripper PS in Figure 1 is intended to perforate itself the pocket of the wrapping film so as to introduce therein the tail end of the said wrapping.
  • the gripper comprises internal means for the self-centring opening or closing movement of the said jaws 3, 3', as illustrated in broken lines.
  • These movement means may, for example, comprise pinions and a rack actuated in a reciprocating manner by a fluid pressure cylinder, said means having been used for some time for actuating mechanized grippers and for this reason not being shown in the drawings in that they may be easily realized by persons skilled in the art.
  • Figure 2 shows another possible embodiment of the secondary gripper PS which may be used in place of that shown in Figure 1.
  • This solution comprises a gripper substantially similar to that shown in Figure 1, but with jaws which may also not be pointed, and movable axially inside a hollow body 4, the front end 104 of which has, for example, the form of a single or double flute tip, hence with a single oblique surface as illustrated in the drawings or with two oblique and opposite surfaces and therefore provided at its end with one or two lateral openings.
  • the gripper PS is outside the body 4, its jaws are initially open as shown in broken lines and are then closed and the said gripper is then retracted into the laterally open part of the body 4, as illustrated in continuous lines, so as to leave the pointed end 104 of the said body 4 free and visible.
  • the apparatus comprises the following means which are now described with reference to Figures 3 and 3a and which are for example of the type already used in the apparatus described in European patent EP 1 037 801 B1 and in European patent application No. 03 027074.8 both in the name of the present Applicants, to which documents detailed reference will be made.
  • C denotes the palletized load which is enveloped by the wrapping of stretch film A and on the side of which an opposition rod 5 at the end of the cycle is raised from the rest position shown in broken lines into the active position shown in continuous lines, said opposition rod causing the movement, away from the load, of at least one of the last turns of the wrapping film, so as to form a pocket S between this turn and the load.
  • at least the turn or turns of film which form the pocket S are formed by film, the height of which has been suitably reduced and for this reason is tensioned and has a greater mechanical strength.
  • the bundling together of the last section of the wrapping film may be performed by means other than the jaws of the secondary gripper, for example by a pair of parallel forks made of round metal bar and mounted on a body which is designed to be longitudinally slidable on the body 1, 4 of the said secondary gripper, so that these forks may be arranged adjacent to the jaws of the gripper during bundling together of the tail end and gripping and so that they may be subsequently moved away so as to free the tip of the secondary gripper for the subsequent working steps.
  • the secondary gripper PS by means of combined movements, is introduced together with the tail end X into a middle section of one of the two walls of the pocket S, preferably at a point on the pocket which is sufficiently close to the opposition means 5 and hence sufficiently deep, to avoid any interference with the load C, following which the said secondary gripper PS is opened and is extracted from the pocket, while the tail end X remains inside the said pocket owing to contact with the film which forms the pocket and the contact with the edge of the hole F formed in the said pocket by the secondary gripper which in synchronism closes so as to prevent the jaws interfering with the film of the pocket (Fig. 5).
  • the insertion of the tail end into the pocket S is performed by means of perforation of that wall of the said pocket which is subsequently acted on by the opposition means 5 when the latter is retracted for example by means of pivoting downwards, as shown in Figure 5, so that this opposition means performs a kind of smoothing action on the tail end so as to arrange it correctly and retain it inside the pocket which in synchronism closes and grips inside it the said tail end of the completed wrapping.
  • the secondary gripper PS returns into the rest position, the wrapped load is moved away from the wrapping station and the machine is ready to repeat a new working cycle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
EP04001541A 2003-01-31 2004-01-26 Methode et appareil pour la fixation de l'extrémité du film étirable pour charges de palette Withdrawn EP1449771A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO20030041 2003-01-31
ITBO20030041 ITBO20030041A1 (it) 2003-01-31 2003-01-31 Metodo ed apparatto per il fissaggio senza saldatura della coda

Publications (1)

Publication Number Publication Date
EP1449771A1 true EP1449771A1 (fr) 2004-08-25

Family

ID=32732590

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04001541A Withdrawn EP1449771A1 (fr) 2003-01-31 2004-01-26 Methode et appareil pour la fixation de l'extrémité du film étirable pour charges de palette

Country Status (2)

Country Link
EP (1) EP1449771A1 (fr)
IT (1) ITBO20030041A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1586506A1 (fr) * 2004-04-15 2005-10-19 Mecwrap S.r.l. Dispositif et procédé pour séparer et fixer un film étirable dans une machine pour enroulement de palettes
EP2939935A1 (fr) * 2014-05-02 2015-11-04 Aetna Group S.p.A. Machine d'emballage et procédé d'emballage
ITUB20151033A1 (it) * 2015-05-29 2016-11-29 Aetna Group Spa Macchina avvolgitrice
IT202100031907A1 (it) * 2021-12-21 2023-06-21 Service Advanced Mech Solutions Srl Macchina di imballaggio per l'avvolgimento mediante pellicola di una bobina di materiale nastriforme
ES2953460A1 (es) * 2023-06-09 2023-11-13 Innova Maqu Industrial S L Envolvedora automatica que comprende un sistema de atado de cordon

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4100614A1 (de) * 1991-01-11 1992-07-16 Nuetro Maschinen & Anlagen Verfahren und vorrichtung zum festlegen des folienendes beim umwickeln von verpackungsgut
US6453643B1 (en) * 1997-12-10 2002-09-24 Pieri S.R.L. Method and apparatus for the fastening of the tail of wrappings of stretchable film for palletized loads

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4100614A1 (de) * 1991-01-11 1992-07-16 Nuetro Maschinen & Anlagen Verfahren und vorrichtung zum festlegen des folienendes beim umwickeln von verpackungsgut
US6453643B1 (en) * 1997-12-10 2002-09-24 Pieri S.R.L. Method and apparatus for the fastening of the tail of wrappings of stretchable film for palletized loads

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1586506A1 (fr) * 2004-04-15 2005-10-19 Mecwrap S.r.l. Dispositif et procédé pour séparer et fixer un film étirable dans une machine pour enroulement de palettes
US7305809B2 (en) 2004-04-15 2007-12-11 Mecwrap S.R.L. Device for cutting and fixing plastic film in machines for wrapping pallets, and corresponding process
EP2939935A1 (fr) * 2014-05-02 2015-11-04 Aetna Group S.p.A. Machine d'emballage et procédé d'emballage
ITUB20151033A1 (it) * 2015-05-29 2016-11-29 Aetna Group Spa Macchina avvolgitrice
WO2016193875A1 (fr) * 2015-05-29 2016-12-08 Aetna Group S.P.A. Machine d'enveloppement
US10703519B2 (en) 2015-05-29 2020-07-07 Aetna Group S.P.A. Wrapping machine
IT202100031907A1 (it) * 2021-12-21 2023-06-21 Service Advanced Mech Solutions Srl Macchina di imballaggio per l'avvolgimento mediante pellicola di una bobina di materiale nastriforme
EP4201823A1 (fr) * 2021-12-21 2023-06-28 Tec.Mec. Service S.r.l. Machine d'emballage pour envelopper un rouleau de matériel web au moyen d'un film
ES2953460A1 (es) * 2023-06-09 2023-11-13 Innova Maqu Industrial S L Envolvedora automatica que comprende un sistema de atado de cordon

Also Published As

Publication number Publication date
ITBO20030041A1 (it) 2004-08-01

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