EP1270418A1 - Wrapping machine - Google Patents

Wrapping machine Download PDF

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Publication number
EP1270418A1
EP1270418A1 EP02014327A EP02014327A EP1270418A1 EP 1270418 A1 EP1270418 A1 EP 1270418A1 EP 02014327 A EP02014327 A EP 02014327A EP 02014327 A EP02014327 A EP 02014327A EP 1270418 A1 EP1270418 A1 EP 1270418A1
Authority
EP
European Patent Office
Prior art keywords
stretch film
machine
axis
reel
supporting
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Withdrawn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
EP02014327A
Other languages
German (de)
English (en)
French (fr)
Inventor
Francesco Gazzaneo
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.)
Atlanta Srl
Original Assignee
Atlanta 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 Atlanta Srl filed Critical Atlanta Srl
Publication of EP1270418A1 publication Critical patent/EP1270418A1/en
Withdrawn legal-status Critical Current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 present invention relates to a wrapping machine for wrapping and stabilizing in stretch film a palletized load comprising a supporting pallet and a number of products resting on the pallet.
  • a wrapping machine comprising supporting means for supporting a reel of stretch film; and actuating means for producing, between the supporting means and the palletized load, a relative revolving movement in a substantially horizontal plane to wind the stretch film about the palletized load.
  • the supporting means normally comprise a slide fitted in known manner to a vertical rail on an upright to move linearly along the rail between a raised position and a lowered position; and the reel is fitted to the slide to rotate, with respect to the slide, about a respective vertical longitudinal axis.
  • the established height of the upright also establishes the diameter and, hence, weight of the reel, which must be kept within given respective values, over and above which the machine may be overturned when the slide and, hence, the reel move into the raised position.
  • a wrapping machine for wrapping and stabilizing a palletized load in stretch film, the machine comprising supporting means for supporting a reel of stretch film; and first actuating means for producing, between the supporting means and the palletized load, a relative revolving movement in a substantially horizontal first plane, so as to wind said stretch film about the palletized load; and being characterized in that said supporting means are positioned in a fixed first vertical position; second actuating means being provided to move the stretch film, as it is unwound off said reel, in a substantially vertical direction.
  • Number 1 in Figure 1 indicates as a whole a machine for wrapping and stabilizing a palletized load 2 in a stretch film 3 of plastic material.
  • Load 2 comprises a number of products 4 resting on a substantially rectangular supporting pallet 5, which rests on a substantially horizontal supporting surface defined by a floor S, and supports a number of superimposed layers 6 of products 4. More specifically, each layer 6 comprises a number of side by side products 4 oriented with respect to one another to maximize the number of products 4 in layer 6.
  • machine 1 comprises a trolley 7 powered, as explained in detail later on, to run continuously about load 2 along an endless path P extending in a substantially horizontal plane and in a given traveling direction 8.
  • Trolley 7 comprises a supporting frame 9 having a substantially horizontal longitudinal axis 10 and supporting an axle 11, which is located at the front in direction 8, has a longitudinal axis 12, is fitted on its free ends with two wheels 13 fitted in rotary manner to axle 11, and is hinged to frame 9 to swing, with respect to frame 9 and under the control of a steering device 14, about a substantially vertical hinge axis 15 perpendicular to axes 10 and 12.
  • Trolley 7 also comprises two wheels 16 located behind wheels 13 in direction 8, and mounted to rotate about a horizontal axis 17 crosswise to axis 10. More specifically, one of wheels 16 (hereinafter indicated 16a) is located facing load 2, and is fitted to a supporting shaft 18 coaxial with axis 17 and fitted in rotary manner to frame 9; and the other (hereinafter indicated 16b) is located on the opposite side of wheel 16a to load 2, and is fitted to a powered supporting shaft 19 coaxial with axis 17 and fitted in rotary manner to frame 9.
  • Steering device 14 comprises a touch roller 20 for tracing the outline of load 2; and an orienting device 21 interposed between roller 20 and axle 11 to control the angular position of axle 11 about axis 15 as a function of said outline.
  • Device 21 comprises a steering column 22, which extends upwards, coaxially with axis 15, is connected in angularly fixed manner to axle 11, and is fitted at an intermediate point with a crank 23 extending radially outwards from the outer surface of column 22.
  • Device 21 also comprises a rocker arm 24, which is hinged to frame 9 to swing, with respect to frame 9, about a hinge axis 25 substantially parallel to axis 15 and located behind axis 15 in direction 8, and in turn comprises a first arm 26 for supporting roller 20 in rotary manner, and a second arm 27 connected to crank 23 by the interposition of a connecting rod 28 extending between two axes 29 and 30, of which axis 29 is the axis of rotation of connecting rod 28 with respect to crank 23, and axis 30 is the axis of rotation of connecting rod 28 with respect to arm 27.
  • a rocker arm 24 which is hinged to frame 9 to swing, with respect to frame 9, about a hinge axis 25 substantially parallel to axis 15 and located behind axis 15 in direction 8, and in turn comprises a first arm 26 for supporting roller 20 in rotary manner, and a second arm 27 connected to crank 23 by the interposition of a connecting rod 28 extending between two axes 29 and 30, of which axis 29 is the axis of rotation of connecting rod
  • connecting rod 28 is so located that a clockwise swing of rocker arm 24 about axis 25 corresponds to an anticlockwise swing of axle 11 about axis 15; and, conversely, an anticlockwise swing of rocker arm 24 about axis 25 corresponds to a clockwise swing of axle 11 about axis 15.
  • Device 21 also comprises a spring 31 interposed, in the example shown, between frame 9 and a free end of arm 27, and which provides for normally keeping axle 11 in a steering position ( Figure 2a) in which trolley 7 is pointed towards load 2.
  • wheel 16a In actual use, since wheel 16a is idle and wheel 16b powered, and spring 31 keeps axle 11 in the steering position, wheel 16b tends to push trolley 7 and, hence, roller 20 towards load 2.
  • rocker arm 24 swings about axis 25 (clockwise in Figure 2a) in opposition to spring 31, so that axle 11 is swung by connecting rod 28 (anticlockwise in Figure 2a) about axis 15 into a travel position ( Figure 2b) in which axis 12 is substantially parallel to axis 17 to allow trolley 7 to travel along the straight portions of path P.
  • roller 20 When axle 11 is in the travel position, roller 20 is therefore located behind axle 11 in direction 8, so that, as shown in Figure 2c, when the outline of load 2 is such as to obstruct the travel of roller 20 in direction 8, rocker arm 24 swings clockwise about axis 25, and axle 11 anticlockwise about axis 15, to allow roller 20 to get past, as opposed to jamming against, the obstacle.
  • roller 20 off floor S since the height of roller 20 off floor S is controllable selectively, travel of roller 20 in direction 8 may be obstructed either by the shape of pallet 5, in the event roller 20 is positioned contacting pallet 5, or by relatively soft products 4, in the event roller 20 is positioned contacting products 4.
  • orienting device 21 is so designed that trolley 7 is guided along substantially the whole of path P by the outline of load 2.
  • machine 1 also comprises a feed device 32 for unwinding film 3 continuously off a reel 33 fitted to frame 9 to rotate, with respect to frame 9, about an axis 34 substantially parallel to axis 17.
  • Device 32 comprises a number of known rollers 35, which are arranged successively in the feed direction 36 of film 3, are mounted to rotate, with respect to frame 9, about respective axes 37 substantially parallel to one another and to axis 34, and are each located on the opposite side of film 3 to the adjacent rollers 35. More specifically, two rollers 35 (hereinafter indicated 35a and 35b) are powered to rotate at different angular speeds, so as to pre-stretch in known manner film 3 to be wound about load 2.
  • Device 32 also comprises an orienting member 38 located downstream from rollers 35 in direction 36, and for orienting film 3 as it is unwound off reel 33, so that, downstream from member 38, film 3 is positioned substantially vertically.
  • Member 38 is triangular, extends in a substantially vertical plane perpendicular to direction 8, and comprises two rollers 39 mounted idly to rotate about respective longitudinal axes 40 substantially parallel to axes 37; a roller 41 which extends upwards from the free ends of rollers 39 facing load 2, and is mounted idly to rotate about a longitudinal axis 42 substantially parallel to axes 15 and 25; and a roller 43 which extends between rollers 39 and roller 41, and is mounted idly to rotate about a longitudinal axis 44 forming a substantially 45° angle with axes 40 and with axis 42.
  • film 3 is inserted between the two rollers 39, is wound about roller 43 and, finally, about roller 41 into a vertical position.
  • Member 38 is movable, with respect to frame 9 and by an actuating device 45, in a direction 46 substantially parallel to axis 42, so that, by combining the movement of trolley 7, and therefore of reel 33, about load 2 with the movement of member 38 in direction 46, film 3 can be wound substantially in a coil about the whole of load 2, when the height, measured parallel to direction 46, of load 2 is greater than the width of film 3.
  • Device 45 comprises an articulated parallelogram 47 in turn comprising two cranks 48, which are substantially the same length, extend parallel to each other, and are fitted in rotary manner to the side of frame 9 facing load 2, so as to swing, with respect to frame 9 and under the control of a known actuating member (not shown), about respective axes 49 extending parallel to each other and to axes 34 and 37, and substantially aligned with each other in direction 46.
  • Parallelogram 47 also comprises a connecting rod 50, which extends between two axes 51 of rotation, about which connecting rod 50 rotates with respect to cranks 48, and is fixed, by the interposition of two fastening appendixes 52, to the free ends of roller 41, so as to keep member 38 coplanar at all times with said vertical plane, and axis 42 parallel at all times with direction 46.
  • Machine 1 therefore has the further advantage of reel 33 being maintained in a fixed vertical position, as opposed to moving in direction 46, and of only the film 3 just unwound off reel 33 being moved in direction 46, so that machine 1:

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
EP02014327A 2001-06-29 2002-06-27 Wrapping machine Withdrawn EP1270418A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2001BO000416A ITBO20010416A1 (it) 2001-06-29 2001-06-29 Macchina avvolgitrice
ITBO20010416 2001-06-29

Publications (1)

Publication Number Publication Date
EP1270418A1 true EP1270418A1 (en) 2003-01-02

Family

ID=11439461

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02014327A Withdrawn EP1270418A1 (en) 2001-06-29 2002-06-27 Wrapping machine

Country Status (2)

Country Link
EP (1) EP1270418A1 (it)
IT (1) ITBO20010416A1 (it)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005110852A1 (en) * 2004-04-30 2005-11-24 Aspo - Societa' A Responsabilita' Limitata Self-propelling machine for wrapping stacked loads with protective film
ITMO20110106A1 (it) * 2011-05-09 2012-11-10 Robopac Spa Macchina avvolgitrice semovente
ITMO20110111A1 (it) * 2011-05-12 2012-11-13 Robopac Spa Macchina avvolgitrice semovente
WO2012153265A1 (en) * 2011-05-09 2012-11-15 Robopac S.P.A. Self-propelled wrapping machine
CN104369892A (zh) * 2014-10-28 2015-02-25 杭州永创智能设备股份有限公司 新式行走式缠绕机
CN104890912A (zh) * 2015-06-04 2015-09-09 佛山市日丰企业有限公司 包膜机及包膜方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2383074A1 (fr) * 1977-03-10 1978-10-06 Saint Freres Procede et installation de banderolage en continu de palettes chargees de fardeaux
GB1594340A (en) * 1976-12-20 1981-07-30 Goldstein J Guided stretch-wrap machine
US5040358A (en) * 1989-08-02 1991-08-20 Newtec International (Societe Anonyme) Method and machine for helically depositing a band of film on the vertical faces of a palletized load
FR2686313A1 (fr) * 1992-01-22 1993-07-23 Thimon Jacques Procede et machine de banderolage d'une charge palettisee mettant en óoeuvre un equipage monte doublement articule .

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1594340A (en) * 1976-12-20 1981-07-30 Goldstein J Guided stretch-wrap machine
FR2383074A1 (fr) * 1977-03-10 1978-10-06 Saint Freres Procede et installation de banderolage en continu de palettes chargees de fardeaux
US5040358A (en) * 1989-08-02 1991-08-20 Newtec International (Societe Anonyme) Method and machine for helically depositing a band of film on the vertical faces of a palletized load
FR2686313A1 (fr) * 1992-01-22 1993-07-23 Thimon Jacques Procede et machine de banderolage d'une charge palettisee mettant en óoeuvre un equipage monte doublement articule .

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005110852A1 (en) * 2004-04-30 2005-11-24 Aspo - Societa' A Responsabilita' Limitata Self-propelling machine for wrapping stacked loads with protective film
CN100506648C (zh) * 2004-04-30 2009-07-01 Aspo有限公司 用保护膜包装成叠负载的自推式包装机
ITMO20110106A1 (it) * 2011-05-09 2012-11-10 Robopac Spa Macchina avvolgitrice semovente
WO2012153265A1 (en) * 2011-05-09 2012-11-15 Robopac S.P.A. Self-propelled wrapping machine
US20140053502A1 (en) * 2011-05-09 2014-02-27 Robopac S.P.A. Self-propelled wrapping machine
US9555908B2 (en) * 2011-05-09 2017-01-31 Robopac S.P.A. Self-propelled wrapping machine
ITMO20110111A1 (it) * 2011-05-12 2012-11-13 Robopac Spa Macchina avvolgitrice semovente
CN104369892A (zh) * 2014-10-28 2015-02-25 杭州永创智能设备股份有限公司 新式行走式缠绕机
CN104890912A (zh) * 2015-06-04 2015-09-09 佛山市日丰企业有限公司 包膜机及包膜方法

Also Published As

Publication number Publication date
ITBO20010416A0 (it) 2001-06-29
ITBO20010416A1 (it) 2002-12-29

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