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WO2008146321A1 - Dispositif à pression hydrostatique pour machines d'emballage de palettes - Google Patents

Dispositif à pression hydrostatique pour machines d'emballage de palettes Download PDF

Info

Publication number
WO2008146321A1
WO2008146321A1 PCT/IT2008/000349 IT2008000349W WO2008146321A1 WO 2008146321 A1 WO2008146321 A1 WO 2008146321A1 IT 2008000349 W IT2008000349 W IT 2008000349W WO 2008146321 A1 WO2008146321 A1 WO 2008146321A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure device
weight
load
wrapping
designed
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.)
Ceased
Application number
PCT/IT2008/000349
Other languages
English (en)
Inventor
Claudio Naldi
Valerio Forlivesi
Raniero Lombardi
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.)
Mecwrap SRL
Original Assignee
Mecwrap 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 Mecwrap SRL filed Critical Mecwrap SRL
Priority to EP08763881A priority Critical patent/EP2167387B1/fr
Priority to ES08763881T priority patent/ES2392473T3/es
Publication of WO2008146321A1 publication Critical patent/WO2008146321A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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 present invention relates to a gravitational pressure device for pallet wrapping machines.
  • pneumatic cylinder pressure devices in which the plate which makes contact with the load is at the end of a rod which slides in the cylinder, which is rigidly connected to the upper part of the machine structure.
  • the rod comes out of the cylinder until it reaches the top of the load.
  • the device is deformable: since the rod must perform strokes of at least a couple of metres and its diameter is just a few centimetres, it may bend, compromising its primary function which consists of making the load more stable during wrapping.
  • electric controls are required, which control the movement of the rod and adjustable pressure switches for modifying as required the pressure on the load to be wrapped.
  • Pantograph pressure devices are also used, in which the plate which presses on the top of the load to be packaged is fixed to the lower end of a pantograph, whose fixed part is connected to the machine frame. These may be operated either by a pneumatic cylinder or a motor-driven belt. In the former case, the sliding cylinder is connected to the pair of pantograph arms at the opposite end to the plate, so that its movements cause the whole pantograph to open and close and, consequently, it determines the height of the plate, according to the height of the load. In the latter case, the two ends of the belt are respectively connected to a pulley, driven by a variable speed motor, and to the plate.
  • telescopic pressure devices with a motor-driven belt are also used, in which the plate is at the lower end of a set of tubes which slide inside one another. Their operation is similar to that of the pantograph pressure device with motor- driven belt and they have the same defects. Moreover, the structure is less stable, due to the gradual reduction in the plate supporting surface, and the pressure applied on the load is greatly influenced by the height of the load. Whilst the weight of almost all of the plate supporting structure is applied on a "high” load, only the weight of the smallest telescopic elements is applied on a "low” load.
  • the aim of the present invention is, therefore, to eliminate the above- mentioned disadvantages.
  • the invention described in the claims achieves said aim with a suitably guided pressure device which moves due to the effect of gravity.
  • the main advantage of the present invention is basically the elimination of all electric and electronic components for controlling pressure device movement. Also, the pressure device reaches its operating position more rapidly and maintains it more precisely, since it is not subject to any stress other than the force of gravity. In this way, it guarantees maximum stability of the load to be wrapped. Finally, maintenance is minimised, being restricted to regularly changing some accessories due to wear.
  • Figure 1 is a perspective assembly view of the invention in the home position
  • Figure 2 is an enlarged perspective view of the invention in use
  • FIGS 3 and 4 are perspective views of details relative to parts of the invention.
  • the invention relates to a gravitational pressure device for pallet wrapping machines, comprising a weight (1) able to move freely in a vertical direction, a supporting element (2), able to move in the same direction, designed to support the weight (1) during its movement from the home position to the operating position, and guide means (3), integral with the weight (1), designed to guide its movements relative to the machine (10).
  • the invention is shown on a ring machine with a quadrangular plan.
  • the supporting element (2) prevents the weight (1) from moving when the latter is in the home position.
  • the guide means (3) shown in Figures 3 and 4 comprise at least one pair of elements (3a, 3b) able to slide relative to fixed guides (11).
  • at least one sliding element (3a) comprises means (4) for adjusting its radial position.
  • the adjusting means (4) may be made in various ways, which are alternative or complementary.
  • the accompanying drawings show an elastic element (41), designed to automatically compensate for any size play, and a telescopic arm (42), whose length can be adjusted to compensate for any variations relative to the machine (10) nominal dimensions.
  • the adjusting means (4) described may both be present in the invention, although there could only be one of them.
  • the fixed guides (11) are made on pallet (P) wrapping machine (10) load- bearing elements (12).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Pallets (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

L'invention concerne un dispositif à pression hydrostatique pour machines d'emballage de palettes. Le dispositif comporte un poids (1) apte à se déplacer librement dans une direction verticale ; un élément de support (2) apte à se déplacer dans la même direction et conçu pour supporter le poids (1) pendant son mouvement de la position de repos à la position d'actionnement ; et des moyens de guidage (3), d'un seul tenant avec le poids (1), pour guider son mouvement par rapport à la machine (10).
PCT/IT2008/000349 2007-06-01 2008-05-27 Dispositif à pression hydrostatique pour machines d'emballage de palettes Ceased WO2008146321A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP08763881A EP2167387B1 (fr) 2007-06-01 2008-05-27 Dispositif a pression hydrostatique pour machines d'emballage de palettes
ES08763881T ES2392473T3 (es) 2007-06-01 2008-05-27 Dispositivo de presión gravitacional para máquinas de envolver palets.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITRN20070029 ITRN20070029A1 (it) 2007-06-01 2007-06-01 Pressore a gravita' per macchine per l'avvolgimento di pallet
ITRN2007A000029 2007-06-01

Publications (1)

Publication Number Publication Date
WO2008146321A1 true WO2008146321A1 (fr) 2008-12-04

Family

ID=39817001

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2008/000349 Ceased WO2008146321A1 (fr) 2007-06-01 2008-05-27 Dispositif à pression hydrostatique pour machines d'emballage de palettes

Country Status (4)

Country Link
EP (1) EP2167387B1 (fr)
ES (1) ES2392473T3 (fr)
IT (1) ITRN20070029A1 (fr)
WO (1) WO2008146321A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5085030A (en) * 1986-02-05 1992-02-04 Nippon Sheet Glass Co., Ltd. Method of transferring and storing glass sheets and tray used in method
GB2297534A (en) * 1995-02-03 1996-08-07 Mancon Engineering Ltd Adjusting the width of a web of wrapping material
WO2000066434A1 (fr) * 1999-05-04 2000-11-09 United Packaging Plc Procede et appareil d'emballage
US20030046900A1 (en) * 2001-09-07 2003-03-13 Illinois Tool Works Inc. Multi-tab folder for ring type stretch film wrapping machine, and a method of operating the same
EP1350720A1 (fr) * 2002-03-23 2003-10-08 Erapa-Lenzen GmbH & Co. KG Procédé et appareil pour emballer une pile d'objets
US20040055258A1 (en) * 2001-02-22 2004-03-25 Reiner Hannen Device and method for introducing projecting elements of a film

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5085030A (en) * 1986-02-05 1992-02-04 Nippon Sheet Glass Co., Ltd. Method of transferring and storing glass sheets and tray used in method
GB2297534A (en) * 1995-02-03 1996-08-07 Mancon Engineering Ltd Adjusting the width of a web of wrapping material
WO2000066434A1 (fr) * 1999-05-04 2000-11-09 United Packaging Plc Procede et appareil d'emballage
US20040055258A1 (en) * 2001-02-22 2004-03-25 Reiner Hannen Device and method for introducing projecting elements of a film
US20030046900A1 (en) * 2001-09-07 2003-03-13 Illinois Tool Works Inc. Multi-tab folder for ring type stretch film wrapping machine, and a method of operating the same
EP1350720A1 (fr) * 2002-03-23 2003-10-08 Erapa-Lenzen GmbH & Co. KG Procédé et appareil pour emballer une pile d'objets

Also Published As

Publication number Publication date
ITRN20070029A1 (it) 2007-08-31
ES2392473T3 (es) 2012-12-11
EP2167387B1 (fr) 2012-08-01
EP2167387A1 (fr) 2010-03-31

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