EP0742149B1 - A process for obtaining bags full of products from batches of tubular net - Google Patents

A process for obtaining bags full of products from batches of tubular net Download PDF

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Publication number
EP0742149B1
EP0742149B1 EP96500043A EP96500043A EP0742149B1 EP 0742149 B1 EP0742149 B1 EP 0742149B1 EP 96500043 A EP96500043 A EP 96500043A EP 96500043 A EP96500043 A EP 96500043A EP 0742149 B1 EP0742149 B1 EP 0742149B1
Authority
EP
European Patent Office
Prior art keywords
tube
tubular net
bag
net
products
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.)
Expired - Lifetime
Application number
EP96500043A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0742149A2 (en
EP0742149A3 (en
Inventor
Agustin Dauder Guardiola
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.)
Talleres Daumar SA
Original Assignee
Talleres Daumar SA
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 Talleres Daumar SA filed Critical Talleres Daumar SA
Publication of EP0742149A2 publication Critical patent/EP0742149A2/en
Publication of EP0742149A3 publication Critical patent/EP0742149A3/en
Application granted granted Critical
Publication of EP0742149B1 publication Critical patent/EP0742149B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/15—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the preformed tubular webs being stored on filling nozzles

Definitions

  • the present invention relates to a process for obtaining bags full of products from batches of tubular net, the products being in particular fruits, vegetables and the like, as well as foodstuffs of all sorts and kinds and generally any products or items that are to be packaged in bags, their total weight or quantity being usually predetermined.
  • the tubular net is generally made of a plastic material, although a vegetable, paper or like material could be used.
  • a known automatic machine exists for the continuous formation and closure of net bags obtained from a tubular net which is the object of Spanish Patent number 475,372 granted to Mr Agustin Dauder Guardiola and is essentially characterised by comprising an assembly of two vertically arranged telescopic tubes, namely a fixed inner tube and a sliding outer tube, a third removable tube carrying a certain quantity of the tubular net arranged about the same being disposed over the assembly aforesaid; and the three tubes altogether communicate at the top with a hopper supplying the product to be packaged, which is supplied duly measured, particularly as to its weight.
  • the sliding tube is activated axially downwards by a cylinder of adjustable stroke, pulling the required net portion to form a bag of suitable capacity to accommodate the quantity of product supplied, immediately retrieving its initial position.
  • Certain means are provided to pinch and gather the net portion supplied, which comprise two sets of two blades each, acting on either side of the net, travelling along a horizontal plane, across the axis of said net and flush with the lower end of the sliding tube in its initial position.
  • Said sets of blades lie overlapping in their active position, the top set making up a support for the bottom of the bag receiving the product discharged by the hopper into the tube; and the blades of the top set are provided with a throat that works with the angular edge of blades of the opposite set to establish the pinching of the net aforesaid, a clamping and shearing head being provided at the back of said throat attached to the top set of blades and lying on the virtual axis of the telescopic assembly. The head closes the mouth of the bag that is to be formed and establishes a closure for the bottom of the next bag, whereupon the blades are moved back to the set limit and a new cycle begins.
  • the telescopic tube assembly is mounted on a common turning or swivel support in order to allow the removable tube bearing the net to be removed, which turning support may have another removable tube to be filled with the tubular net and placed in lieu of the tube that has just been emptied, inverting their positions by turning their common support.
  • Each tube is fitted at its lower end with two rings and an annular spring is arranged between them to serve as braking means and avoid an untimely downward sliding of the net.
  • the process carried out by the foregoing machine basically comprises placing a certain quantity of tubular net about the outer removable tube, manually lowering the net until it projects beyond said removable tube below the clamping head, pinching the lower free end of the net and placing a clamp to close its lower mouth, overlapping the two sets of blades to provide a support for the bottom of the bag thus formed, unloading the product into the bag from the hopper located above the top end of the telescopic assembly of said three tubes, moving the sets of blades back until the full bag lies below the same, activating the clamping and shearing head that closes the mouth of the full bag and establishes a closure for the bottom of the next bag, likewise defining the support therefor, and then separating the full bag from the rest of the tubular net and beginning a new cycle as described above.
  • the document US-A 3,553,924 describes a method for bagging products, said method comprising: positioning a supply of bagging material shirred upon the exterior of a vertically disposed hollow mandrel; feeding said material upwardly across the upper entrance edge of said mandrel and downwardly through the interior thereof; fastening closed the material passing through said mandrel at a point therebelow; releasing an item to drip through said mandrel and into said bagging material whereby said material is pulled through the interior of said mandrel; sensing the fall of a bagged item below a given level; gathering the material at a point a distance above the item bagged therein; fastening the gathered material closed at about said point; severing said gathered material below said point; and braking said material against the upper exterior portion of said mandrel, said braking and gathering being initiated upon said sensing of said bagged item.
  • a disadvantage of the process described in said prior art lies in that the product must drop from a certain height, delimited by the telescopic assembly of three tubes of the machine, down to the bottom of the bag, the lower end of which is closed, and the first items of the product bang against the rigid support at the bottom of the bag receiving the product discharged by the hopper.
  • height of the telescopic assembly is quite large in order to be able to store a rather large quantity of tubular net and thereby cut down on the idle time taken to change tubes or fill the same with another batch of tubular net. This is prejudicial for delicate products, namely certain fruits for instance.
  • a process for obtaining bags full of products from batches of tubular net comprises arranging a certain quantity or batch of tubular net about an upstanding tube, first inserting the top end of the tubular net inside the tube through its top mouth, lowering the tubular net until its free end projects under the tube and applying first closure means to such free end, thereby forming a bag with its lower end closed and its top end open, filling the bag with the desired products from product unloading means, closing the top end of the bag, shearing it, and detaching it from the rest of the batch of tubular net, characterized by the following steps:
  • the steps (a) and (b) are repeated to obtain new bags full of products until the batch of tubular net stocked in the tube is depleted, whereupon the process starts again at step (a) in a tube loaded with another batch of tubular net about the same.
  • the process for obtaining bags full of products from batches of tubular net subject of the invention overcomes the disadvantage aforesaid of the known processes and contributes the following advantages, among others: a gentler treatment of the products to be contained within the relevant bags; the tube can have any desired length and may therefore initially contain a rather large quantity of tubular net; and a better performance since the idle time required to replace the empty tube with a full tube is reduced in the desired proportion.
  • the length of the tube holding the tubular net in the known process is limited by the height through which the product must drop, which must be as small as possible, in particular for delicate products or in practice such products may not be treated using the known process.
  • FIG. 1 is a front elevation view of the machine and figure 2 is an enlarged plan view of said machine, turned 90°, which shows neither the tubular net nor other means shown in figure 1 in the interests of clarity, and as described hereinafter.
  • the machine comprises a vertical tube (1) having an outer ring (la) or collar of a suitable material arranged on its top end to make sliding of the tubular net easier - its edge being therefore rounded- and to hold it back to some extent.
  • the tube stands on a support (2) that turns about a vertical column (3) comprising a circular rod forming part of the framework (4) of the machine, which comprises said column, a vertical column (5) -parallel to column (3) and of like construction- and a horizontal crossbar (6) and (6a) fixed to both columns.
  • the framework (4) is upstanding on and fixed to a clamping and shearing device (7) (partially and schematically shown in figure 1).
  • the turning support (2) has a short funnel (8) (only shown in figure 1) whose function is to contain the tubular net (9) (figure 1), the creased tubular net being arranged about the tube (1), before which the support (2a) and the tube (1b) are first placed in the position shown in phantom in figure 2, which position is obtained by turning said support (2) with its empty tube (1) manually or automatically, as the case may be. Having filled the tube (1b) with the appropriate batch or quantity of tubular net about the same, it is returned to the turning support, manually or automatically, reaching the operative position shown in figure 1 with the tubular net already in place.
  • the machine has two pairs of arms (10) and (11) the top ends of which are articulated to the crossbar (6a) and with two cross shafts (12) and (13) (figure 2) lying within the respective free ends of such arms, supported and guided for rotation between such ends, albeit without axial movement, which shafts are provided on the front of the machine with respective grooved pulleys (14) and (15) (schematically shown only in figure 1), both cross shafts extending into overhanging projections and having affixed respective pairs of frustum-of-the-cone rollers (16) and (17) coated in rubber or another material with adherent features, although they might indeed have a rough surface.
  • Both pairs of articulated arms (10) and (11) are interlinked by means of a pneumatic cylinder (18), which could be hydraulic, whose body is articulated between one of the two pairs of arms, in this example between the pair of arms (11), and whose stem is articulated to the other pair of arms, in this example to the pair of arms (10).
  • a pneumatic cylinder (18) which could be hydraulic, whose body is articulated between one of the two pairs of arms, in this example between the pair of arms (11), and whose stem is articulated to the other pair of arms, in this example to the pair of arms (10).
  • the gearmotor (19) (only shown in figure 1) causes a gearing (20), comprising four intermeshing cogwheels in this example, to turn in one direction or another, the first and the last of such cogwheels being connected to two shafts to which the two pairs of arms (10) and (11) are in turn articulated, respective grooved pulleys (21) and (22) being connected thereto which interlink with the grooved pulleys (14) and (15) through respective drive belts.
  • the grooved pulleys (14), (15), (21) and (22) could naturally be replaced with suitable cogwheels and the drive means between the relevant pulleys would then comprise driving chains meshing between such cogwheels.
  • Closure and shearing means (23) are provided, shown schematically in figure 1 and forming part of the clamping and shearing device (7), which has a detector (24) for sensing a bag (25) already full of the desired products and closed, which detector governs the gearmotor (19), stopping it when there is no bag (25), which will usually happen when the tubular bag in the tube (1) is depleted or there is a breakdown or malfunction of the pulling means, their driving means and/or the means drawing the pairs of articulated arms to and from each other.
  • first closure means (27) are applied to such free end, usually in the form of a clamp that is tightly fixed to such free end to close the same.
  • the pairs of rollers (16) and (17) lie drawn away from the tube in order to allow such operation and when insertion of the top end of the tubular net in the tube has begun, said two pairs of rollers are applied against the tubular net and, upon the gearmotor (19) being activated to turn in the right direction, the two pairs of rollers turn to raise the outer part of the tubular net thereby to supply it into the tube (1) and the free end of the net is lowered within the tube until it projects under the same.
  • the First Closure means (27), for instance a clamp, are next applied to such free end, and the direction of rotation of the gearmotor is then inverted and the pairs of rollers (16) and (17) thus turn in the opposite direction and thereby cause the outer part of the tubular net to be lowered, the inner part of such net being raised until its lower closed and free end (26) reaches a certain height, forming a bag that is open at the top and lies next to the top unloading area of the product to be packaged.
  • the First Closure means such as a clamp (27)
  • second closure means such as a clamp (28)
  • clamp (28) separate from and situated slightly above the clamp (27) are applied to the top end of the bag.
  • the pinched net lying midway between both clamps (27) and (28) is sheared by the shearing means of the closure and shearing means (23), and the full bag (25) obtained is thus separated from the rest of the tubular net.
  • a label bearing the desired signs and information can, as appropriate, be affixed to the bag and held by the clamp (27) proper or other means (for instance self-adhesive and sealing means).
  • the support (2) and the empty tube (1) are moved out, as shown in phantom in figure 2, to the positions of the tube (1b) and support (2a).
  • Two variants are possible: one in which the empty tube is replaced with a tube that has already been filled with the respective batch of tubular net upon the support (2a) and another in which a batch of tubular net is arranged about the empty tube.
  • the support is turned in the opposite direction until it reaches the position shown in figure 1 and in figure 2, although the latter does not show the relevant batch of tubular net.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Making Paper Articles (AREA)
  • Basic Packing Technique (AREA)
  • Bag Frames (AREA)
EP96500043A 1995-04-20 1996-04-16 A process for obtaining bags full of products from batches of tubular net Expired - Lifetime EP0742149B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES9500765 1995-04-20
ES09500765A ES2108632B1 (es) 1995-04-20 1995-04-20 Procedimiento para obtener bolsas llenas con productos a partir de lotes de malla tubular.

Publications (3)

Publication Number Publication Date
EP0742149A2 EP0742149A2 (en) 1996-11-13
EP0742149A3 EP0742149A3 (en) 1997-11-12
EP0742149B1 true EP0742149B1 (en) 2000-01-19

Family

ID=8290131

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96500043A Expired - Lifetime EP0742149B1 (en) 1995-04-20 1996-04-16 A process for obtaining bags full of products from batches of tubular net

Country Status (8)

Country Link
EP (1) EP0742149B1 (cs)
JP (1) JPH08301209A (cs)
AT (1) ATE188935T1 (cs)
DE (1) DE69606219T2 (cs)
DK (1) DK0742149T3 (cs)
ES (1) ES2108632B1 (cs)
GR (1) GR3033257T3 (cs)
PT (1) PT742149E (cs)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2122869B1 (es) * 1995-05-16 1999-06-16 Daumar Talleres Procedimiento para obtener paquetes llenos con productos, mediante tubo de malla continuo.
ES2130038B1 (es) * 1996-04-17 2000-02-01 Roda Packing Sa Dispositivo de cabezal doble para el envasado de fruta, aplicable a maquinas embaladoras.
DE102012003358B4 (de) 2012-02-21 2014-06-05 Berner International Gmbh Vorrichtung zum Einschweißen von Abfällen

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3553924A (en) * 1968-04-24 1971-01-12 Swift & Co Method and apparatus for bagging product
SE381172B (sv) * 1973-01-03 1975-12-01 Pactosan Ab Anordning for paketering av avfall i en slang
US3940906A (en) * 1974-11-04 1976-03-02 Fmc Corporation Method of and apparatus for forming packages
DE2717609A1 (de) * 1977-04-20 1978-10-26 Permac Ag Verpackungsautomat
ES475372A1 (es) * 1978-11-24 1979-04-01 Dauder Guardiola Agustin Maquina automatica para la formacion y cerrado en continuo de bolsas de malla obtenidas a partir de red tubular
ES8703797A1 (es) * 1986-05-13 1987-03-01 Roda Packing Sa Perfeccionamientos en las maquinas envasadoras automaticas de objetos, frutas u hortalizas a granel, en mangas continuas de malla o tubo flexible
GB8818365D0 (en) * 1988-08-02 1988-09-07 Process Improvements Ltd Cassette containing flexible tubing to be dispensed therefrom

Also Published As

Publication number Publication date
EP0742149A2 (en) 1996-11-13
ES2108632B1 (es) 1998-07-01
ES2108632A2 (es) 1997-12-16
EP0742149A3 (en) 1997-11-12
DE69606219D1 (de) 2000-02-24
PT742149E (pt) 2000-06-30
JPH08301209A (ja) 1996-11-19
ES2108632R (cs) 1998-01-01
ATE188935T1 (de) 2000-02-15
GR3033257T3 (en) 2000-09-29
DE69606219T2 (de) 2000-07-27
DK0742149T3 (da) 2000-07-03

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