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WO2001098152A2 - Appareil d'emballage de chargements palettises - Google Patents

Appareil d'emballage de chargements palettises Download PDF

Info

Publication number
WO2001098152A2
WO2001098152A2 PCT/IT2001/000322 IT0100322W WO0198152A2 WO 2001098152 A2 WO2001098152 A2 WO 2001098152A2 IT 0100322 W IT0100322 W IT 0100322W WO 0198152 A2 WO0198152 A2 WO 0198152A2
Authority
WO
WIPO (PCT)
Prior art keywords
carriage
supply unit
film
upright structure
guiding
Prior art date
Application number
PCT/IT2001/000322
Other languages
English (en)
Other versions
WO2001098152A3 (fr
Inventor
Leo Marino Santi
Original Assignee
Packmore S.R.L.
Tosi, Barbara
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 Packmore S.R.L., Tosi, Barbara filed Critical Packmore S.R.L.
Priority to AU2001270989A priority Critical patent/AU2001270989A1/en
Publication of WO2001098152A2 publication Critical patent/WO2001098152A2/fr
Publication of WO2001098152A3 publication Critical patent/WO2001098152A3/fr

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
    • 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
    • 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
    • B65B67/00—Apparatus or devices facilitating manual packaging operations; Sack holders
    • B65B67/08—Wrapping of articles
    • B65B67/085—Wrapping of articles using hand-held dispensers for stretch films

Definitions

  • the present invention relates to the packaging of palletized loads by means of a continuous plastic film which is fixed at one end and wound around the load, in continuous turns, so as to create a wrapped assembly retaining and immobilising the loads contained therein.
  • the carriage is equipped with a vertical upright structure on which the film supply unit is displaceably mounted and is provided with actuating means for moving the supply unit along the upright structure; said means being provided in particular with a pulley on which there is wound a flexible cable element having its ends connected, respectively, on the one hand to the supply unit and on the other hand to a counterweight mounted slidably on the upright structure.
  • the carriage is also provided with guiding and steering means designed for gripping and manual conveying thereof around the load by an operator.
  • the operator pushing the carriage, repeatedly walks around the stacked loads to be packaged.
  • the simultaneous displacement of the supply unit along the upright structure also allows the film to be deposited onto the loads with the spiral-shaped arrangement necessary for performing wrapping.
  • An apparatus of the type described above envisages means for guiding and steering the carriage realised in the form of a handlebar and means for actuating the supply unit which are located on the upright structure and consist of a handle which is associated with the counterweight and which, when gripped by the user, allows displacement of the counterweight - and therefore the supply unit - along the upright structure.
  • the handlebar for guiding and steering the carriage and the handle are located in positions relatively far from each other and must be operated by the operator using either of the two hands in each case.
  • one of the two hands namely that gripping the counterweight and consequently causing the supply unit to move upwards and downwards, must be raised and lowered, therefor requiring the operator to perform manoeuvres which are somewhat awkward from an ergonomic point of view.
  • the operator for example, with the left hand must guide the trajectory of the apparatus, while with the right hand he/she must alternately assist guiding and steering as well as release a brake on the counterweight and, consequently, raise and lower the counterweight itself.
  • the immobilisation of the supply unit along the upright structure is also made possible by mechanical locking devices which interact with the counterweight and the upright structure and which may be selectively switched by the user between two conditions in which they allow, or vice versa prevent, the free sliding movement of the counterweight along the upright structure.
  • An apparatus of such a type has numerous drawbacks including that of being difficult to use and that of being somewhat unstable with regard to overturning.
  • operation of the steering handlebar and the handle for operating the counterweight involves the operator having both hands constantly occupied on the handlebar and on the handle at a certain distance from each other.
  • carriages which have large-size and heavy support bases are therefore used, with obvious negative consequences in terms of an increase in the physical force required by the operator and the amount of space needed around the plinth in order to be able to perform wrapping of the products .
  • unwinding of the plastic film by the supply unit is regulated by an analog sensor or using load sensors.
  • rollers on which the film is wound there is one which is free to move as a result of unwinding of the film;
  • the use of an analog sensor which is fixed to the reel-carrying carriage structure is generally combined with jockeying movements of the movable roller, and the sensor operates by means of reading of the - variable - distance of a metal cam.
  • the adjustment of the resistance of the film depending on the product to be wound is performed by varying the sensitivity of the load sensor and therefore excluding the possibility of using springs or other mechanical adjusting systems. Disclosure of the invention
  • the object of the present invention is to overcome the abovementioned drawbacks using an apparatus which is easy to use, has a high manoeuvrability, is safe in terms of stability and has small dimensions .
  • an apparatus for wrapping palletized loads with retractable, prestretched, plastic film comprising: a unit for supplying the plastic film; a carriage which is movable on wheels, has guiding and steering means which are designed for manual gripping and for rotation thereof about the load, is provided with an upright structure on which the film supply unit is displaceably mounted and is provided with actuating means for moving the supply unit along the upright structure, said actuating means comprising a pulley on which there is wound a flexible cable element having its ends connected respectively to the supply unit and to a counterweight mounted slidably on the upright structure, the apparatus being characterized in that said actuating means comprise at least one gearmotor and operating means which are associated therewith and are located on the said guiding and steering means and can be activated and deactivated during guiding and steering of the carriage without release of the manual grip on the guiding and steering means .
  • FIG. 1 is an overall, axonometric perspective view of the apparatus according to the invention.
  • Figures 2 and 3 are partial views of Figures 1 showing certain particular constructional details of the apparatus;
  • 1 denotes in its entirety an apparatus for wrapping palletized loads with retractable, prestretched, plastic film 2.
  • the apparatus 1 essentially comprises ( Figure 1) a unit 3 for supplying the plastic film 2 from a reel 21, mounted on a carriage 4 movable on wheels 5, some of which - i.e. the front ones - are freely pivotable and others of which - i.e. the rear ones - are fixed: this allows optimum guiding and a correct trajectory of the carriage 4.
  • the supply unit 3, which consists of a motorised unit with a structure and operating principle which are completely known, is designed to supply the film 2 externally after subjecting it to a mechanical pulling action able to produce a deforming prestretching effect which is reversible, at least partially, after a certain period of time.
  • the elastic contraction of the film 2 which occurs spontaneously after deposition of the film onto the loads, subsequently allows in a known manner the constrictive tightening of the film 2 which ensures that the set of loads to be packaged as a stable monolithic whole.
  • Unwinding of the film 2 is controlled by means of a device 23 shown in Figures 4 to 7 in two alternative embodiments .
  • the film 2 is unwound onto several rollers 24 which include a movable roller 24a free to be displaced in a predefined direction A.
  • a stem 26 is fastened perpendicular to the axis of the movable roller 24a in the same direction A in which it is able to be displaced, said stem having a magnet 27 at its end opposite to the roller 24a.
  • a Hall sensor 28 which is integrated directly into an electronic board 29 which controls the operation of the motor of the supply unit 3, faces the magnet 27, being fixed to a wall of the box containing the supply unit 3, while a spring 35 acts as a spacer between the Hall sensor 28 and the magnet 27 itself.
  • the movement closer of the movable roller 24a causes compression of the spring 35 and also a variation in the electrical signal depending on the distance between the magnet 27 and the Hall sensor 28, which variation in turn depends on the speed of the operator who is guiding the machine around the support bench.
  • This allows the speed of the motor unwinding the film 2 to be adapted instantaneously to the linear speed of the operator, avoiding both an excessive tension of the film 2 and excessive supplying thereof.
  • the dimensions of the spring 35 must be determined taking into account that it is necessary to avoid both a residual reactive force, which would influence the response of the motor to the advancing movement of the operator, and too small a residual reactive force, which would cause insufficient compaction of the load.
  • the carriage has a horizontal flat base 16 from which there extends a vertical upright structure 6 intended to support the supply unit 3 displaceably along the vertical.
  • the carriage 4 has guiding and steering means consisting of a handlebar 10 which is rigidly fixed to the base 16 and provided with associated end handles 19 which can be gripped by the user.
  • the base 16 of the carriage 4 is formed by a metal plate with an opening 22, the contour of which is shaped so as to receive and circumscribe the supply unit 3 when it is in the fully lowered condition on the upright structure 6 ( Figure 2) . It is necessary to emphasize the fact that this shape of the base 16 ensures intrinsic protection of the supply unit 3 which is inserted inside the contour of the base independently of its position heightwise. Moreover, the curved shape of this contour in all cases prevents any possibility of interference with the contour of - li the pallet in the event of relative knocking or rubbing.
  • the upright structure 6 is realised by three tubular elements 18 which are preferably quadrangular and are rigidly connected to the flat base 16.
  • the supply unit 3 is mounted displaceably on one of the tubular elements 18; a counterweight 9 is mounted displaceably on another element; finally, the supply unit 3 and the counterweight 9 are connected together by a cable element 8 arranged in between.
  • the latter consists in particular ( Figure 3) of a section of chain which is wound around an end pulley 7 of the upright structure 6 and fixed, at its opposite ends, on the one hand to the supply unit 3 and on the other hand to the counterweight 9.
  • a gearmotor 11 mounted on the pulley 7 and operated by corresponding control means 12 associated with the handles 19 of the handlebar 10 and consisting of a pushbutton actuator which can be reached without the user having to release the manual grip on the guiding and steering means 10 allows the user to move the supply unit 3 and the associated counterweight 9 along the upright structure 6, while the user draws the carriage around the load and while the supply unit 3 supplies externally the plastic film 2.
  • the apparatus 1 is also provided with detection means 15 for signalling reaching of the end-of-travel condition of the supply unit 3 and the counterweight along the upright structure 6 and consequent stoppage of the gearmotor 11.
  • detection means 15 for signalling reaching of the end-of-travel condition of the supply unit 3 and the counterweight along the upright structure 6 and consequent stoppage of the gearmotor 11.
  • These means include a clutch 15 which automatically disengages the gearmotor 11 from the pulley 7 in the event of an obstruction to displacement along the upright structure 6 being encountered by the supply unit 3 or the counterweight 9 or either one of these elements: this obstruction may consist in the supply unit 3 or the counterweight 4 coming into contact with the base 16 of the carriage 4 or, more likely, with the top 25 of the Upright structure 6. It must be pointed out that the location, at the top, of the end- of-travel stops for the supply unit on the one hand or the counterweight on the other hand is certainly preferable in view of the fact that the cable connecting element 8 is constantly tensioned.
  • the gearmotor 11 which drives the pulley 7 and the motor with which the supply unit 3 is equipped are supplied with power by means of one or more batteries 17 which are located on the base of the carriage 4 and connected by means of electric cables 20 which run internally along the tubular elements 18 of the upright structure 6.
  • the apparatus 1 allows wrapping to be performed in a simple and easy manner and has advantageously a simple, compact, small-size and low-weight structure which allow manoeuvring in small spaces, without moreover prejudicing in any way the stability of the apparatus which is also ensured by the permanent gripping of the handlebar 10, with two hands, by the user.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)

Abstract

L'invention concerne un appareil servant à emballer des chargements palettisés au moyen d'un film plastique rétractable préétiré (2), comprenant une unité (3) de distribution de film (2) et un chariot (4) à roues (5). Le chariot (4) comprend une structure montante (6) sur laquelle l'unité (3) de distribution peut être déplacée suite à l'activation d'organes de commande comprenant une poulie (7) déplacée par un motoréducteur (11) auquel est associé un élément (8) de câble flexible, situé entre les deux et connecté à l'unité (3) de distribution et à un contrepoids (9) coulissant sur la structure montante (6). Le chariot (4) comprend des organes (10) de guidage et d'orientation destinés à saisir et à transporter manuellement ledit chariot autour du chargement lorsqu'est distribué le film (2). Des organes (12) d'exploitation du motoréducteur (11), situés sur les organes (10) de guidage et d'orientation, peuvent être activés et désactivés sans que l'utilisateur relâche sa prise.
PCT/IT2001/000322 2000-06-20 2001-06-18 Appareil d'emballage de chargements palettises WO2001098152A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001270989A AU2001270989A1 (en) 2000-06-20 2001-06-18 Apparatus for wrapping palletized loads

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2000RN000028A ITRN20000028A1 (it) 2000-06-20 2000-06-20 Apparato per fasciare carichi pallettizzati con film plastico, prestirato ritraibile
ITRN2000A000028 2000-06-20

Publications (2)

Publication Number Publication Date
WO2001098152A2 true WO2001098152A2 (fr) 2001-12-27
WO2001098152A3 WO2001098152A3 (fr) 2002-05-02

Family

ID=11456610

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2001/000322 WO2001098152A2 (fr) 2000-06-20 2001-06-18 Appareil d'emballage de chargements palettises

Country Status (3)

Country Link
AU (1) AU2001270989A1 (fr)
IT (1) ITRN20000028A1 (fr)
WO (1) WO2001098152A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1344718A1 (fr) * 2002-03-15 2003-09-17 Produra Walter Henggeler Dispositif pour dérouler un film à partir d'une bobine
EP3070004A1 (fr) * 2015-03-19 2016-09-21 ITALDIBIPACK S.p.A. Dispositif d'enroulement avec surface de levage
EP4001133A3 (fr) * 2020-11-24 2022-08-03 Cousins Packaging, Inc. Bras rotatif pour machine d'emballage étirable

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3910522A (en) * 1974-09-18 1975-10-07 Worldwide Converting Mach Web tension control system
DE2810124A1 (de) * 1977-03-11 1978-09-14 United Packaging Ind Uk Ltd Verfahren und maschine zum einwickeln von packungen und lasten
FR2727075A1 (fr) * 1994-11-21 1996-05-24 F Mortelette Ets Dispositif roulant de banderolage helicoidal non automoteur a support de bobine mobile verticalement
DE59610888D1 (de) * 1996-08-22 2004-02-12 Naehtechnik Sahl Ges M B H Vorrichtung zum zugspannungsgeregelten Zuführen eines elastischen Bandes od. dgl. zu einer Arbeitsmaschine, insbesondere Nähmaschine
IT1293226B1 (it) * 1997-07-02 1999-02-16 C B S R L Dispositivo portatile, particolarmente adatto per avvolgere con film estensibile e prestirato, dei carichi pallettizzati, o gruppi o pile

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1344718A1 (fr) * 2002-03-15 2003-09-17 Produra Walter Henggeler Dispositif pour dérouler un film à partir d'une bobine
EP3070004A1 (fr) * 2015-03-19 2016-09-21 ITALDIBIPACK S.p.A. Dispositif d'enroulement avec surface de levage
US10392143B2 (en) 2015-03-19 2019-08-27 Italdibipack S.P.A. Perfected winding device
EP4001133A3 (fr) * 2020-11-24 2022-08-03 Cousins Packaging, Inc. Bras rotatif pour machine d'emballage étirable
US11643230B2 (en) 2020-11-24 2023-05-09 Cousins Packaging Inc. Rotary arm for stretch wrapping machine
US12054297B2 (en) 2020-11-24 2024-08-06 Cousins Packaging Inc. Rotary arm for stretch wrapping machine

Also Published As

Publication number Publication date
WO2001098152A3 (fr) 2002-05-02
ITRN20000028A1 (it) 2000-09-20
AU2001270989A1 (en) 2002-01-02

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