WO2001079062A2 - Ensacheuse - Google Patents

Ensacheuse Download PDF

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Publication number
WO2001079062A2
WO2001079062A2 PCT/GB2001/001763 GB0101763W WO0179062A2 WO 2001079062 A2 WO2001079062 A2 WO 2001079062A2 GB 0101763 W GB0101763 W GB 0101763W WO 0179062 A2 WO0179062 A2 WO 0179062A2
Authority
WO
WIPO (PCT)
Prior art keywords
bag
bags
product
machine according
packaging
Prior art date
Application number
PCT/GB2001/001763
Other languages
English (en)
Other versions
WO2001079062A3 (fr
Inventor
Michael John Mount
Original Assignee
Wright Machinery Limited
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 Wright Machinery Limited filed Critical Wright Machinery Limited
Priority to AU48605/01A priority Critical patent/AU4860501A/en
Publication of WO2001079062A2 publication Critical patent/WO2001079062A2/fr
Publication of WO2001079062A3 publication Critical patent/WO2001079062A3/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
    • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B1/20—Reducing volume of filled material
    • 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
    • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B1/20—Reducing volume of filled material
    • B65B1/22—Reducing volume of filled material by vibration

Definitions

  • This invention relates to a packaging machine, and more particularly, to a machine for packaging snack products (e.g. potato crisps) and other low density materials.
  • snack products e.g. potato crisps
  • the invention is intended to have particular applicability to a packaging machine of the type described in EP-A-0836991, in which the packs are filled and sealed as they travel on a continuously rotating carousel. Attention is directed to EP- A-0836991 for a detailed description of the operation of the machine. It should be understood, however, that the various aspects of the present invention which are described below are intended to be applicable also to packaging machines of other types.
  • a first aspect of the invention therefore, there is provided means for jostling bags after filling, as they travel along a path, so as to impart to the product within the bag agitation causing the product to settle towards the bottom of the bag.
  • Another problem which can arise in filling bags with product as they travel along a path is that of ensuring that product is directed as least substantially only into the bags and does not fall into the machine itself.
  • the open tops of bags to be filled pass successively beneath a chute through which a respective dose of product is introduced into each bag, and it would be desirable to reduce the possibility for product from the chute to fall between successive bags.
  • the guide structure comprises one or more gables, i.e. elements shaped like a roof pitched on both sides.
  • Figures 1 to 3 show one embodiment of the above mentioned jostling arrangement, Figure 1 being a perspective view, Figure 2 being a corresponding plan view, and Figure 3 being a perspective view showing a detail of Figure 1;
  • Figures 4 and 5 show the above mentioned product guide structure, Figure 4 being a perspective view and Figure 5 being a plan view showing part of what is shown in Figure 4;
  • Figure 6 is a perspective view of the two chute members, shown, for illustrative purposes, separated from one another;
  • Figures 6a to 6c show, respectively, the two chute members of Figure 6 holding a bag, and two disassembled views of bag and chute members;
  • Figure 7 is a plan view of a carousel, showing the respective locations of bag entry point, bag filling point and bag leaving point;
  • Figure 8 is a plan view of an alternative embodiment of jostling arrangement.
  • Figure 9 is a vertical section through a gas supply arrangement for receiving flushing gas and supplying it to individual chutes.
  • FIGS 1 to 3 show open-topped plastic bags 2, formed of a film material, travelling horizontally around a circular path shown by dotted lines 4 in Figure 2.
  • Each bag is carried by a chute 6.
  • the chute 6 comprises a radially inner chute member and a radially outer chute member which, in the course of the travel of the chute round its circular path move towards and away from one another. This is further described in EP-A-0836991, mentioned above, and reference should be made to that specification for further details.
  • Each bag has product introduced into it through a hopper, which is not shown in Figures 1 to 3 but is shown, as hopper 20, in Figure 4.
  • the jostling arrangement is positioned a location which, as considered in the direction of movement of the bags, is downstream of the hopper.
  • the jostling arrangement comprises a pair of arms 8 and 10 which protrude into the path of the bags.
  • the bag first contacts the radially outer arm 8 and, as it travels further, the opposite side of the bag contacts the radially inner arm 10. The effect of these contacts between the bags and the arms 8, 10 is to push the bag first one way and then the other.
  • the arms 8 and 10 are so arranged that what contacts the walls of the bags are curved arm portions situated intermediate the ends of the arms. It will be understood, however, that the arms could take other forms, and that elements other than arms could be used, for example plates. Another possibility would be to provide means for blowing the bags laterally with respect to their path of travel.
  • FIG 8. This comprises a pair of arcuate plates 90, 91. Both plates are arranged so that their downstream ends, as considered with reference to the direction of movement of the bags 92 are movable radially inwards and outwards. To achieve this, the plates 90 and 91 are mounted on a base 93 whose upstream end is connected by a pivot 94 to a fixed part of the machine, and whose downstream end is connected by a pivot 95 to one end of a crankshaft 96. The other end of the crankshaft 96 is connected by an eccentric pivot 97 to a rotating wheel 98.
  • rotation of the wheel 98 causes the downstream end of the plates 90 and 91 to move back and forth, typically at a frequency of from 1 to 10 Hz, more preferably at about 5 Hz, so that they repeatedly strike the product-containing bags 92.
  • the total amount of travel of the downstream ends of the plates 90 and 91 is typically from 1 to 2 cm, though a greater or lesser amount of travel could be used. (For ease of illustration the bags are shown narrower than they are in reality).
  • the gap between the plates is widened at the upstream end, in the illustrated embodiment by providing the upstream ends of the plates 90 and 91 with flared portions 99.
  • movement of the plates 90 and 91 could alternatively be provided by various other mechanisms, for example a cam mechanism or a pneumatically reciprocating cylinder.
  • Figures 4 and 5 show the product guiding arrangement of the present invention.
  • this is provided by a wheel 22 mounted to be rotatable about a vertical shaft 24 in a direction which, as viewed in Figs 2, 4 and 5, is anticlockwise.
  • the wheel has a hub 26 and a rim 28, interconnected by spokes 30.
  • spokes 30 In the illustrated arrangement there are five such spokes.
  • Each spoke is in the form of a gable, with a pair of oppositely directed, downwardly slanted surfaces 30a and 30b.
  • the gable is shown as being asymmetrical (surface 30b slopes more steeply than surface 30a) to take account of its forward motion.
  • a symmetrical gable could be used instead, with surfaces 30a and 30b both sloping down at, for example, 45°.
  • Rotation of the wheel 22 is synchronised with rotation of the carousel which carries the chutes 6, and hence the bags suspended from the chutes.
  • a motor for driving the carousel is situated centrally with respect to the carousel. This is then connected by a drive chain 32 to a drive wheel (not shown) for the wheel 22.
  • the synchronisation is such that when the hopper 20 has its outlet (shown as 34 in Figure 5) positioned over a gap between adjacent chutes 6, one of the spokes 30 is positioned above that gap.
  • product will only be discharged through the hopper outlet 34 when a chute 6 is beneath it.
  • the presence of the spokes 30 deals with the possibility that product may emerge from the hopper outlet at other times. Thus, it may emerge just before a chute 6 is positioned to receive product, it may emerge just after a chute 6 has finished receiving most of the product and has moved away, or may emerge at random times, for example as a result of having become stuck somewhere in the chute and then released.
  • the product strikes one or other of the surfaces 30a, 30b and slides downwardly along that surface and into one or other of the adjacent chutes 6. From there the product enters the bag suspended from that chute. Were it not for the product guiding arrangement provided by the wheel 22, product could be deposited in the packaging machine and accumulate there, with the attendant risks both to hygiene and to the performance of the machine.
  • FIGs 6 and 6a to 6c show a particular design of the chute 6, comprising chute members 61 and 62.
  • these chute members are shown in Figures 6 and 6b completely separated from one another, but it is to be understood that they would normally be positioned so as to form a complete chute, as shown in Figures 6a and 6c.
  • the way in which these members cooperate with one another is explained in more detail in EP-A-836991 mentioned above.
  • the chute member 61 has three major faces 63, 64 and 65, and a minor face 66 present only in the bottom region of the chute member.
  • a plate 67 extends downwards from the lower end of the face 63.
  • the chute member 62 has one major face 68 and two side wings 69.
  • a plate 70 extends downwardly from the lower end of the face 68.
  • the members 61 and 62 are so positioned with respect to one another that the wings 69 lie alongside the faces 64 and 65, with the face 68 being positioned so as to extend across from face 64 to face 65.
  • the chute member 62 can be moved towards the face 63 of the chute member 61 , to reduce the size of the chute to a minimum, or away from that face, so that the size of the chute is at a maximum. Relative movement of the chute members is effected via the shafts 72 on chute member 61 and shaft 74 on chute member 62.
  • the chute described is substantially the same in principle as that described in EP-A-0836991.
  • the plate 70 is the lower extension of a plate 75 which is positioned rearwardly of the face 68 and which defines, with that face, a chamber.
  • the lateral edges of the plate 75 are sealed, for example by welding, to the corresponding edges of the face 68.
  • Flushing gas for example nitrogen, is introduced into this chamber through duct 76.
  • a bag 100 (see Figures 6a to 6c) to be filled with product is held beneath the chute by plates 67 and 70, which extend into the bag and which are moved away from one another until the bag is tensioned between them.
  • Flushing gas introduced into the chamber between the face 68 and the plate 75 flows downwardly over the inner surface of the plate 70, and thence down a major inner surface of the bag. When the gas reaches the bottom of the bag it flows upwardly, along the opposite major inner face, and then out through the top of the bag. This is indicated diagrammatically by the arrow in Figure 6b.
  • the gas flow needed for this purpose is typically in the range of 1-4 litres/bag, with a gas flow of about 1 litre being usually sufficient.
  • the plate 75 could be located on the inside of the chute member 62, rather than on the outside as shown. It has been found, however, that locating the plate on the outside gives a smoother, and therefore more efficient, flow of flushing gas.
  • FIG. 9 This comprises a rotatable, generally cylindrical block 110 with radially extending gas outlet passages 111. Each passage 111 is connected by a gas line (not shown) to a respective one of the chutes 6.
  • An annular boss 112 is secured, for example by threaded member 113, to the top of the block 110, and a stationary gas supply member 114 is received within the boss 112.
  • the upper end of the member 114 is connected to a gas supply pipe (not shown).
  • the lower end of the member 114 opens into a chamber 121.
  • Disk 122 is fixed with respect to member 114 by two fingers 123, only one of which is visible in the view shown.
  • the member 114 is fixedly mounted in the packaging machine by means of a plate 115, and an arm 116 which is shown in part and whose remote end is connected to fixed part of the machine.
  • the block 110 is enabled to rotate around the member 114 by the provision of a bearing 119, and gas leakage is prevented, or at least reduced, by an annular seal 120.
  • FIG 7 shows a plan view of the carousel and associated components.
  • the carousel rotates anticlockwise, and the bags enter at the location marked A.
  • Gas flushing takes place during the course of the travel of the bags from location A to a location C, either continuously or as one or more pulses.
  • gas flushing takes place just before location C, to ensure elimination of oxygen immediately before the bags enter the top sealer (see below).
  • Each bag is filled at location B (for simplicity, the filling hopper 20 has been omitted from Figure 7), and then encounters the jostling arrangement comprising arms 8 and 10.
  • the filled bag leaves the carousel at location C, and travels to a top sealer 80, where the top of the bag is sealed as it passes between top seal belts.

Landscapes

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

Abstract

L'invention concerne une ensacheuse, de préférence une ensacheuse à carrousel, destinée à ensacher un produit dans des sachets. Ladite ensacheuse comporte des moyens destinés à secouer les sachets après remplissage lors de leur transport le long d'un chemin, l'agitation imprimée au produit à l'intérieur du sachet provoquant un dépôt du produit au fond du sachet. Ladite ensacheuse comporte également une structure de guidage disposée entre des zones adjacentes de réception de sachets, permettant de guider dans un sachet le produit tombant autrement entre les sachets. Par ailleurs, des moyens de chasse permettent d'introduire un flux de gaz de chasse dans chaque sachet ouvert sur le haut, ledit flux de gaz se déplaçant vers l'extrémité fermée du sachet le long d'une surface intérieure principale de celui-ci, puis hors du sachet le long d'une surface principale opposée, chassant ainsi l'air de l'intérieur du sachet.
PCT/GB2001/001763 2000-04-19 2001-04-18 Ensacheuse WO2001079062A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU48605/01A AU4860501A (en) 2000-04-19 2001-04-18 Packaging machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0009710.5 2000-04-19
GB0009710A GB0009710D0 (en) 2000-04-19 2000-04-19 Packaging machine

Publications (2)

Publication Number Publication Date
WO2001079062A2 true WO2001079062A2 (fr) 2001-10-25
WO2001079062A3 WO2001079062A3 (fr) 2002-04-11

Family

ID=9890254

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2001/001763 WO2001079062A2 (fr) 2000-04-19 2001-04-18 Ensacheuse

Country Status (3)

Country Link
AU (1) AU4860501A (fr)
GB (1) GB0009710D0 (fr)
WO (1) WO2001079062A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2736606C1 (ru) * 2020-07-03 2020-11-19 Закрытое акционерное общество "БЕСТРОМ" Автоматическая круглая карусельная упаковочная машина

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0836991A2 (fr) 1996-10-16 1998-04-22 Howden Packaging Equipment Limited Machine d'emballage pour fabriquer, remplir et sceller des sacs

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB664430A (en) * 1949-01-29 1952-01-09 Brecknell Munro & Rogers Ltd Improvements in or relating to bag filling and setting devices
DE2425488C3 (de) * 1974-05-27 1979-04-12 Librawerk Pelz & Nagel Gmbh & Co Kg, 3300 Braunschweig Vorrichtung zum Rütteln von Säcken beim oder nach dem Füllen
SE7810684L (sv) * 1978-10-13 1980-04-14 Carlsson Sune Justus Roland Anordning for fyllning av en eller flerveggiga forpackningar
US4448011A (en) * 1981-10-01 1984-05-15 Abbott Laboratories Inert gas wheel assembly
US5042540A (en) * 1990-05-10 1991-08-27 Gorlich Michael P Device for placing products in sealable containers while maintaining the integrity of the seal

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0836991A2 (fr) 1996-10-16 1998-04-22 Howden Packaging Equipment Limited Machine d'emballage pour fabriquer, remplir et sceller des sacs

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2736606C1 (ru) * 2020-07-03 2020-11-19 Закрытое акционерное общество "БЕСТРОМ" Автоматическая круглая карусельная упаковочная машина

Also Published As

Publication number Publication date
GB0009710D0 (en) 2000-06-07
WO2001079062A3 (fr) 2002-04-11
AU4860501A (en) 2001-10-30

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