EP0094077A2 - Procédé et machine d'emballage d'articles - Google Patents

Procédé et machine d'emballage d'articles Download PDF

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Publication number
EP0094077A2
EP0094077A2 EP83104550A EP83104550A EP0094077A2 EP 0094077 A2 EP0094077 A2 EP 0094077A2 EP 83104550 A EP83104550 A EP 83104550A EP 83104550 A EP83104550 A EP 83104550A EP 0094077 A2 EP0094077 A2 EP 0094077A2
Authority
EP
European Patent Office
Prior art keywords
machine
packaging film
welding
packaging
conveyor belt
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Withdrawn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
EP83104550A
Other languages
German (de)
English (en)
Other versions
EP0094077A3 (fr
Inventor
Giuseppe Fioravanti
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.)
P M I SpA Packaging Machinery Industry
Original Assignee
P M I SpA Packaging Machinery Industry
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 P M I SpA Packaging Machinery Industry filed Critical P M I SpA Packaging Machinery Industry
Publication of EP0094077A2 publication Critical patent/EP0094077A2/fr
Publication of EP0094077A3 publication Critical patent/EP0094077A3/fr
Withdrawn legal-status Critical Current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
    • B65B25/00—Packaging other articles presenting special problems
    • B65B25/02—Packaging agricultural or horticultural products
    • B65B25/04—Packaging fruit or vegetables
    • 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
    • B65B9/06—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it
    • B65B9/067—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it the web advancing continuously

Definitions

  • the above invention relates to a method and a machine for packaging articles using the so-called "flow pack” technique.
  • the conveyor belt has suitable projections or ribs for feeding the products.
  • the supplied products are then encased in a film, preferably a plastic film, the packaging film being placed on the products from above, then placed around the products and the assembled packaging edges being closed by welding them together.
  • the welding process takes place in the known machine using welding rollers, which are located below the feed plane of the products to be packaged.
  • the packaging tube produced is then divided into individual packages by welding at the same time at the beginning and at the end of the packaging material, which is placed around the product in a sleeve-like manner, whereby individual packaging is produced, which is generally referred to as "flow pack" packaging.
  • the known packaging machines of this type have proven themselves for the packaging of not too sensitive products, i.e. for the packaging of products that are not damaged during the feed movement by the movement by the feed means protruding from the transport plane.
  • packaging machines can also pack loose or piled-up products, such as small vegetables or fruit, for example cherries or plums. It is also not possible to pack loose flowers or flower arrangements with the known machines of this type, since these products cannot be moved forward using slides which protrude from the feed plane of the machine, since the extremely sensitive parts of these products, owing to the Friction that arises between the product and the support and sliding plane of the packaging machine would be damaged.
  • the object of the above invention is to propose a new method and a new machine with which, using the so-called "flow pack” technique, also sensitive products, products with an irregular shape, as well as small products or loosely accumulated articles, in a safe and fast manner , can be packed automatically without the product being mechanically stressed or even being damaged due to direct contact with the conveying means or due to a frictional movement with respect to the transport level.
  • the object according to the invention is achieved by a method which is characterized in that the packaging film is pulled off the supply roll in a plane which is above the transport plane of the machine, and the packaging film is then welded by welding the parallel edges of the film together the supply roll is put together and that in an intermediate support section of the film on a conveyor belt that is the same
  • the speed at which the packaging film is removed from the supply roll is when the products to be packaged are deposited on the packaging film.
  • the packaging film experiences a gradual deformation from a horizontal level (take-off roll) into a tubular casing from its pull-off point on the supply roll to the welding device, with the parallel edges of the packaging film in the Welding device can be connected and that the packaging film between the horizontal take-off roll and the welding unit, in the form of a gradually preformed tube, lie on the conveyor belt, which moves at the same speed as the packaging film.
  • the products to be packaged are advantageously deposited on the conveying line of the packaging film on the conveyor belt; this is done without mechanical stress due to the lack of relative movement between the product and the feed plane.
  • the position of the products to be packaged is definitely determined by the packaging material that has already been joined in the welding device with its parallel edges and a closing angle or a gusset between the products and forms the packaging film, stabilized.
  • the device for carrying out the method according to the invention is characterized by the provision of a receiving device for a roll of packaging material, to which a horizontal and height-adjustable take-off roll is assigned, which is provided above the feed plane of the machine so that a continuous conveyor belt runs on the feed plane, and a positionable welding unit is arranged above the conveyor belt.
  • the pull-off roll of the packaging film can be adjusted in height and that the welding device can be adjusted in a corresponding manner so that the packaging film can be moved from an extended position arranged in a horizontal plane with the two parallel wheels of the packaging film at a maximum distance (horizontal take-off roll), gradually, due to the mutual approach of the parallel edges of the packaging film, sinks down, is supported on the conveyor belt of the feed plane of the machine, and is then present in the manner of a pre-formed packaging sleeve, and there are no folds irregularities are still caused in the packaging film and immediately following this support zone forms a closing angle (triangular sealing gusset) between the parallel edges which are connected in the welding unit.
  • the packaging film is increasingly deformed into a closed shell Merging and stabilizing the products to be packaged, especially in the case of irregularly shaped products.
  • the packaging machine 1 consists of a base frame, which has a horizontal support surface 3 has, which extends over the entire length of the machine.
  • holding, guiding and running rollers 4 are provided, which are driven, for example, directly via a motor or a drive wheel 5 and thus drive the supply roller 6 in the direction of the arrow f and ensure that the packaging film 7 at the same speed , with which the conveyor belt moves along the horizontal plane 3, is driven.
  • the frame 2 of the packaging machine has two vertical supports 9, which receive a guide roll 10, via which the packaging film 7 drawn off from the supply roll 6 runs off.
  • the supports 9 have elongated holes 11 in order to enable adjustment of the horizontally arranged take-off roller 10 in the vertical direction.
  • the machine frame 2 has a welding device, which is designated 12 in its entirety.
  • Said welding device has holding supports 13 which can be displaced along a horizontally arranged guide 14 and along vertically arranged guide rails 155 in order to be able to make an adjustment with respect to the machine plane.
  • Welding rollers 15, which are driven by a motor, are rotatably mounted in the holding supports 13.
  • the take-off roller 10, which guides the packaging film 7, and the Welding rolls 15 are arranged approximately at the same height.
  • the set height positions are primarily dependent on the dimensions of the product 29 to be packaged and inevitably on the width of the packaging film 7, as well as on the dimensions of the line section in which the bulged part 7a of the film is to lie on the conveyor belt 8, that is horizontal support level 3 of the packaging machine 1 runs.
  • a storage device 16 known per se is provided in the storage zone in which the packaging film 7a rests on the conveyor belt 8a and can advantageously be moved up or down in the direction of the arrow g.
  • This loading or dosing device is able to deposit the product 29 to be packaged carefully and automatically in the bulged storage zone 7a of the packaging film 7, which rests on the driven conveyor belt 8.
  • the conveyor belt 8 has no interruptions, not even in the vicinity of the dividing device.
  • the dividing device 17 which is designed as a cutting and welding device, consists of a double arm which is pivotally mounted about the point 18, which is provided in the lower part of the machine frame.
  • the pivotable double arm 17 crosses the conveyor belt 8 in a yoke-like manner and has a cross strut or a transversely arranged welding bracket 19 which, for example, also extends over the piston rod of a pneumatic cylinder or the like 20 marked drive means is operatively connected.
  • the arm 17 is displaceable in height and for this purpose, for example, an adjusting screw or an automatic transmission known per se is used.
  • the double arms 17 are advantageously connected via a transverse, rotatably arranged roller 21, which serves as a counterpressure surface for the welding bracket 19 during the closing movement of the bracket 19, ie during the execution of the welding and cutting process at the beginning and at the end of the Packaging.
  • the double arm 17 follows the movement of the conveyor belt 8 in the direction of the arrow h. During this movement, the conveyor belt and the packaging sleeve to be welded are raised slightly. If one takes into account that the radius between the pivot point 18 and the counterpressure roller 21 is very large in comparison to the pivot angle of the double arm 17, it is understandable that the slight lifting of the conveyor belt 18 is fully compensated for by its elasticity.
  • deflection rollers 22 are provided on the lower strand of the conveyor belt, which can carry out a compensating movement if necessary.
  • the conveyor belt 8 is followed by a further conveyor device 23, which only has the task of separating the finished packs 29 and feeding them to other devices which operate independently of the packaging machine 1.
  • a known folding and welding bracket 24 can be provided at the height of the closing angle (gusset) between the side edges 7b of the packaging film 7, which is by a certain amount in the packaging film which has already been deformed into a tubular packaging sleeve can occur to enable, for example, that Using rolls with a horizontal axis (not shown for reasons of clarity), the production of a weld with overlapping edges becomes possible. This was previously not possible in the packaging machines already known, since in these devices the packaging film was placed on the product 29 to be packed from above and the welding was carried out below the horizontal feed plane of the machine.
  • 3a shows the product 29 to be packaged in the lay-up line in which the packaging film 7 lies fully on the conveyor belt 8 and in which zone the formation of the closure angle (gusset) between the two approximated edges 7 of the packaging film has already begun .
  • the packaging film 7 with its bulged part lies flat on the conveyor belt 8 and that in this zone the packaging film 7 drawn off the take-off roll 10 has already started to wrap around the product to be packaged in the form of a sleeve or a tube.
  • the product 29 to be packaged is enveloped by the packaging film 7 and stabilized in the packaging film 7 due to the tension that occurs; in this case there is an increased formation of shells in the packaging film due to a further convergence of the edges 7b of the film, which are fed to the following roll welding unit 12.
  • FIGS. 3a-5b only a packaging and sealing method by directly connecting the edges 7b of the Packaging film 7 was shown, the machine according to the invention is also advantageously suitable for producing overlapped welds of the joined edges 7b.
  • a back pressure bracket 24 is provided in the joining zone of the edges, which is introduced into the interior of the sleeve-shaped packaging 7 and works with an already known welding and folding device which is arranged above the back pressure bracket 24.
  • the packaging machine 1 touch devices and measuring devices 30 and 31 are provided along level 3 of the packaging machine 1 touch devices and measuring devices 30 and 31 (photocells, interrupters and similar devices), with which it is possible to start and end the product 29 to be packaged and the end of the product to be packaged To record or measure product 29.
  • These probing and measuring devices 39 and 31 can via a suitable electrical or electronic control circuit, which, for. B. is equipped with microprocessors, determine the length of the packaged product 29, process this value and send 8 control pulses depending on the feed speed of the feed belt to drive the welding and dividing device 17-21 accordingly and the welding and separation of the packaging film 7 am Carry out beginning and end of the product. This fact makes it possible to pack products with different lengths.
  • a holding device 50 is provided on the front of the welding unit, which is identified overall by 12, which receives two horizontally arranged parallel holding rods 51 and 52.
  • the rods 51 and 52 are inserted into recesses in the holder 5 and, after loosening a corresponding locking screw 53, the rods can be adjusted in their position in order to then be tightened again.
  • Each rod 51, 52 has a blind hole 54 on the front, which receives the tapered end of a further rod 55 and 56, respectively.
  • the rods 55, 56 can also be adjusted in the direction of the arrow (a) in order to be able to adjust the rod 55 or 56, a corresponding adjusting screw 57, with which clamping is also possible, being provided.
  • a pivot lever 59 or 60 is mounted via a horizontally arranged transverse bolt 58, which ends in a handle 61 or 62 at its upper end and at its lower end Guide and guide rollers 63, 64 has.
  • the levers 59, 60 and therefore the guide rollers 63, 64 can be pivoted in the direction of the arrow (s).
  • Each plate 67, 68 receives on its underside rotatable guide rollers 70, 71 and 72, 73 with a vertical axis of rotation and, by pivoting the corresponding holding plate 67, 68, the rollers can be pivoted in the direction of the arrow (o).
  • the angle of inclination of the roller 63, 64 in the direction of the arrow (s) with respect to the vertical can be changed, and thus the edges of the packaging film B can be given an increasing component of motion or a decreasing component of motion.
  • a further division can be made by pivoting the rods 55, 56 about their horizontal axis and finally, by pivoting the roller groups 70, 71 or 72, 73 about the vertical axis in the direction of the arrow (o), it is possible to make a larger or to transmit smaller tension to the edges of the packaging film, whereby there is a further adjustment possibility, which can also be completed by a pivoting movement of the rods 51, 52 about the horizontal axis; the locking screw 53 solved.
  • the edges of the packaging film P can be acted upon and these can be adjusted in their position precisely in relation to the welding rollers 15, furthermore according to the material properties or the deformation state of the packaging film P, e.g. in the case of corrugated or wrinkled edges, a compensating division can take place, whereby it is achieved that the edges of the packaging film in the desired position are fed exactly with straight edges to the welding unit and in particular to the welding rollers 15.
EP83104550A 1982-05-11 1983-05-09 Procédé et machine d'emballage d'articles Withdrawn EP0094077A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT21198/82A IT1151163B (it) 1982-05-11 1982-05-11 Procedimento e macchina per confezionare articoli
IT2119882 1982-05-11

Publications (2)

Publication Number Publication Date
EP0094077A2 true EP0094077A2 (fr) 1983-11-16
EP0094077A3 EP0094077A3 (fr) 1984-12-19

Family

ID=11178245

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83104550A Withdrawn EP0094077A3 (fr) 1982-05-11 1983-05-09 Procédé et machine d'emballage d'articles

Country Status (2)

Country Link
EP (1) EP0094077A3 (fr)
IT (1) IT1151163B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2638420A1 (fr) * 1988-11-02 1990-05-04 Jaquier Claude Machine pour emballer des portions de produits dans un film, notamment dans un film transparent retractable
WO2001083300A1 (fr) * 2000-05-03 2001-11-08 Comipack S.R.L. Machine d'emballage horizontale servant notamment a la formation, au remplissage et a la fermeture de sachets avec differents produits

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH335601A (de) * 1955-07-20 1959-01-15 Dent Ott Walter Dr Med Maschine zum Herstellen und Abfüllen von Beuteln für rieselfähiges Gut
US2959902A (en) * 1958-04-08 1960-11-15 American Viscose Corp Packaging apparatus
FR1399425A (fr) * 1964-06-24 1965-05-14 Soag Machine Tools Ltd Appareil pour l'emballage des articles à l'intérieur d'une enveloppe susceptible d'être scellée
FR2056251A5 (fr) * 1969-07-22 1971-05-14 Dwyer Raymond
US3706177A (en) * 1971-03-18 1972-12-19 Westvaco Corp Automatic bag closing machine
GB1382842A (en) * 1972-03-16 1975-02-05 Iwema Forpacknings Ab Package with handle and a method and a machine for the manufacture of said package

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH335601A (de) * 1955-07-20 1959-01-15 Dent Ott Walter Dr Med Maschine zum Herstellen und Abfüllen von Beuteln für rieselfähiges Gut
US2959902A (en) * 1958-04-08 1960-11-15 American Viscose Corp Packaging apparatus
FR1399425A (fr) * 1964-06-24 1965-05-14 Soag Machine Tools Ltd Appareil pour l'emballage des articles à l'intérieur d'une enveloppe susceptible d'être scellée
FR2056251A5 (fr) * 1969-07-22 1971-05-14 Dwyer Raymond
US3706177A (en) * 1971-03-18 1972-12-19 Westvaco Corp Automatic bag closing machine
GB1382842A (en) * 1972-03-16 1975-02-05 Iwema Forpacknings Ab Package with handle and a method and a machine for the manufacture of said package

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2638420A1 (fr) * 1988-11-02 1990-05-04 Jaquier Claude Machine pour emballer des portions de produits dans un film, notamment dans un film transparent retractable
WO2001083300A1 (fr) * 2000-05-03 2001-11-08 Comipack S.R.L. Machine d'emballage horizontale servant notamment a la formation, au remplissage et a la fermeture de sachets avec differents produits

Also Published As

Publication number Publication date
IT1151163B (it) 1986-12-17
IT8221198A0 (it) 1982-05-11
EP0094077A3 (fr) 1984-12-19

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