EP3490889B1 - Machine et procédé de remplissage et scellement automatiques de sacs à valve - Google Patents

Machine et procédé de remplissage et scellement automatiques de sacs à valve Download PDF

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Publication number
EP3490889B1
EP3490889B1 EP17761577.0A EP17761577A EP3490889B1 EP 3490889 B1 EP3490889 B1 EP 3490889B1 EP 17761577 A EP17761577 A EP 17761577A EP 3490889 B1 EP3490889 B1 EP 3490889B1
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EP
European Patent Office
Prior art keywords
bag
filling
machine
path
sealing
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EP17761577.0A
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German (de)
English (en)
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EP3490889A1 (fr
Inventor
Paolino BAROSI
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Group Pack Srl
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Group Pack Srl
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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
    • 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
    • B65B1/04—Methods of, or means for, filling the material into the containers or receptacles
    • B65B1/18—Methods of, or means for, filling the material into the containers or receptacles for filling valve-bags
    • 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
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/12—Feeding flexible bags or carton blanks in flat or collapsed state; Feeding flat bags connected to form a series or chain
    • B65B43/14—Feeding individual bags or carton blanks from piles or magazines
    • B65B43/16—Feeding individual bags or carton blanks from piles or magazines by grippers
    • B65B43/18—Feeding individual bags or carton blanks from piles or magazines by grippers by suction-operated grippers
    • 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
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/42—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation
    • B65B43/54—Means for supporting containers or receptacles during the filling operation
    • 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
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/02—Closing containers or receptacles deformed by, or taking-up shape, of, contents, e.g. bags, sacks
    • B65B7/025—Closing valve bags

Definitions

  • the present invention generally finds application in the field of packaging and bagging plants and particularly relates to a machine for automatically filling and selling valve bags.
  • the invention relates to a method of filling and sealing valve bags using the above discussed machine.
  • Bags having a filling mouth with a check valve have been long known to be used for packaging various bulk products, such as powdered or granular products, such as feeds, fertilizers, seeds, cement, plaster or other similar products.
  • the valve has an adhesive layer therein, which is adapted to be melted by heating to assist sealing of the mouth once the bag has been filled.
  • Bags are preferably filled and sealed using machines equipped with appropriate filling means and at least one device adapted to emit electromagnetic waves in the radio-frequency range as well as ultrasounds for causing the adhesive layer proximate to the filling means to be heated.
  • US 4,688,370 discloses a machine for filling and sealing valve-bags as described above, which is adapted to contain granular material.
  • the machine comprises a bag-filling station having a nozzle connected to a reservoir for delivering the granular material and a tilting base below the nozzle, for supporting the bag.
  • a bag-sealing station which has a sealing head connected to a radio-frequency electromagnetic wave emitter for sealing the valve of each bag.
  • Each bag is transferred from the filling station to the sealing station by means of a moving arm, which is adapted to receive the bag in a lying position from the base that is tilted. Furthermore, the arm comprises a sliding portion, which is adapted to place the bag proximate to the sealing device and to unload it onto a sliding belt once the valve has been sealed.
  • a first drawback of this arrangement is that the moving arm is placed before the filling station and actually prevents positioning of a new bag to be filled while the first bag is being transferred at the sealing device.
  • a further drawback is that each bag is completely overturned by the tilting base on the moving arm as it is being transferred from the filling station to the sealing device.
  • This drawback may cause loss or spillage of granular material from the interior of the bag to the outside, or possibly damages to the paper of the bag.
  • the technical problem addressed by the present invention consists in providing a machine for automatically filling and sealing valve bags that affords a higher hourly throughput as compared with prior art plants.
  • the object of the present invention is to solve the aforementioned technical problem and obviate the above drawbacks, by providing a machine for automatically filling and selling valve bags that is highly efficient and relatively cost-effective.
  • a particular object of the present invention is to provide a machine as described hereinbefore that has a very high throughput.
  • Yet another object of the present invention is to provide a machine as described hereinbefore, that can limit material losses during the bag filling an closing processes.
  • a further object of the present invention is to provide a machine as described hereinbefore that can avoid damages to the bags during the bag filling and closing processes.
  • Another object of the present invention is to provide a machine as described hereinbefore that can reduce the time required to fill the bag.
  • a further object of the present invention is to provide a machine as described hereinbefore, that allows the bag valve to be exposed before sealing.
  • the support means are adapted to move between the nozzle and the sealing head along a second path and the control unit is programmed to control the coordinated movement of the support means and the transfer means such that the displacement of each empty bag toward the nozzle and of each filled bag from the nozzle to the sealing head may be synchronized while preventing any interference of their respective paths and reducing the dead times of the two steps.
  • the invention relates to a method of automatically filling and sealing valve bags using the above discussed machine as defined in claim 11.
  • a machine for automatically filling and sealing valve bags B with at least one filling mouth M.
  • the bags B are generally made of paper and comprise a top portion P with the filling mouth M, having a predetermined length I, a closed bottom portion L and a pair of lateral sides S.
  • the filling mouth M is composed of a pair of facing edges C made of paper or other sheet-like materials, which slightly project out of the top portion P and may move toward and away from each other thereby generally defining a valve V.
  • Each edge C has a respective adhesive strip in its inner side, which is adapted to be heated to adhere to the other strip and cause the mouth M to be sealed.
  • the bags may also comprise valves of different sizes and one or more filling mouths M.
  • the bags B may be filled with different solid materials, e.g. Of granular type, such as flours, feeds, seeds, fertilizers, yeasts or of inorganic type, such as powdered cement and plaster.
  • solid materials e.g. Of granular type, such as flours, feeds, seeds, fertilizers, yeasts or of inorganic type, such as powdered cement and plaster.
  • the machine 1 comprises a load-bearing frame 2 with filling means 3 mounted thereto for filling one bag B at a time, and comprising a nozzle 4 adapted to be introduced into the mouth M of each bag B and transfer means 5 for picking up the bags from one pile or supply 6 of empty bags and transferring it toward the filling means 3 along a second path T 1 .
  • the supply 6 may contain a plurality of empty bags B stacked one on top of the other and may be mounted in a longitudinally offset position relative to the nozzle 4.
  • the filling material may be contained in a reservoir 7 situated inside the frame 2 and connected to the nozzle 4 and a plurality of weight sensors may be provided, which are adapted to allow delivery of a predetermined amount of solid material according to the size of the bag B in use.
  • the transfer means 5 may comprise a swinging arm 8 with a rigid portion 9 hinged to the frame 2 to pivot about a substantially horizontal axis H and a free end 10. Furthermore, the arm 8 may comprise a sliding stem 11 which extends from the rigid portion 9 and may be extended by an appropriate piston, not shown.
  • One or more suction cups 12 are fixed to the free end 10 of the arm 8, corresponding to the free end of the stem 11, and are connected to a vacuum source for holding each bag B at its top portion P.
  • the free end 10 that holds the top portion P of the bag B by means of the suction ups 12, may define the second path T 1 in the air, for introducing the nozzle 4 into the mouth M of each bag B.
  • the supply is placed in a longitudinally and transversely offset position relative to the filling means 3 and the arm 8 may be hinged to the load-bearing frame 2 to also pivot about a vertical axis V such that it may swing and transfer one bag at a time from the supply 6 to the nozzle 4.
  • Widening means 13 may be further provided, which are mounted to the swinging arm 8 to open out the mouth M of each bag B before fitting it onto the nozzle 4.
  • the widening means 13 may comprise the above described stem 11 and a pair of curved side members 14 attached to the rigid portion 9 of the arm 8.
  • the side members will be adapted to retain the lateral faces S of the bag B as the stem 11 slides upwards, the latter holding the top portion P of the bag B by the suction cups 12.
  • the bag B will be widened by opening the mouth M, which will assist opening thereof before fitting it onto the nozzle 4.
  • An ultrasonic sealing head 15 is mounted to the load-bearing frame 2, downstream from the filling means 3 for sealing the mouth M of each filled bag B proximate to the valve V and support means 16 of each bag B during filling and sealing.
  • the sealing head 15 may be mounted in a position distal to the filling means 3 and may comprise a transverse slit 17 and an ultrasound-emitting electrode facing the slit 17.
  • each bag B may be retained at the support means 16 by at least one pair of pneumatic cylinders 19, rigidly joined to the frame 2.
  • the machine 1 has conveyor means 20 for conveying the filled and sealed bags B toward a collection area, which may preferably comprise a conveyor belt 21 located at the support means 16.
  • a computerized control unit is provided, not shown, which is connected to the filling means 3, the transfer means 5, the sealing head 15, the support means 16 and the conveyor means 20 for automatic and coordinated control thereof.
  • the support means 16 are adapted to move between the nozzle 4 and the sealing head 15 along a first path T 2 , as best shown in FIG. 4 .
  • control unit is programmed to control the coordinated movement of the transfer means 5 and the support means 16 such that the displacement of each empty bag B toward the nozzle 4 and of each filled bag B from the nozzle 4 to the sealing head 15 may be synchronized while preventing any interference of their respective paths T 1 , T 2 and reducing the dead times of the two steps.
  • the machine 1 allows a previously filled bag B to be sealed while a new empty bag B placed in the proximity of the filling means 3 is being filled, thereby affording a very high hourly throughput.
  • the support means 16 comprise first 22 and second 23 carriages, moving on respective first 24 and second 25 slide guides 25, which extend in mutually perpendicular longitudinal X and transverse Y directions, as best shown in FIG. 4 .
  • the first carriage 21 comprises a platform 26 for supporting the bag B, located at the nozzle 4 and adapted to be moved in the respective longitudinal direction X by the filling means 3 toward the second carriage 23.
  • the platform 26 is slidably mounted to a vertical pillar 27 rigidly joined to the frame 2 such that its position may be adjusted in height according to the size of the bag B and is stably maintained at the nozzle 4.
  • the first carriage 22 also comprises a pair of side boards 28 joined by a transverse bracket 29 and capable of moving in the longitudinal direction X via the first slide guide 24.
  • the second carriage 23 Once the second carriage 23 has received the filled bag B from the first carriage 22, it is moved in its respective transverse direction Y to carry the bag B toward the ultrasonic head 15, where the filling mouth M is sealed.
  • the combination of the two directions of displacement X, Y of the support means 16 defines the first path T 2 for displacement of the filled bag B which is independent of the second path T 1 for transfer of the empty bag B.
  • the second carriage 23 is initially offset relative to the longitudinal direction X of displacement of the first carriage 22 so as not to impede transfer of the empty bag B to the filling means 3.
  • the second carriage 23 is displaced in its transverse direction Y to be aligned with the longitudinal direction X of the first carriage 22 and the latter is moved to discharge the bag B onto the second carriage 23.
  • the second carriage 23 may also comprise respective pairs of substantially vertical side boards 28 for laterally retaining each bag B while it is being filled and transferred to the sealing head 15.
  • the present machine can fill, transfer and seal the bag B while constantly maintaining it in the vertical position.
  • the second carriage 23 may have a depth p that is smaller than the length I of the top portion P of the bag B, so that the paper edges C with the filling mouth M may be exposed.
  • the filling mouth M with the valve V projecting out of the second carriage 23 is moved through the slit 17 of the ultrasonic head 15 to cause the adhesive to be heated and seal the mouth M by means of the electrode 18.
  • the second carriage 23 comprises a tilt-out bottom 30, as shown in FIG. 12 , which is acted upon by a pneumatic or electromechanical actuator, not shown, controlled by the computerized unit and adapted to be actuated after sealing the valve V to discharge the closed bag B onto the conveyor means 20.
  • the conveyor belt 21 extends along an axis that is substantially parallel to the transverse displacement direction Y to assist discharge of the closed bags B toward the collection area.
  • the invention relates to a method of filling and sealing valve bags B with a filling mouth M using the above described machine 1, whose operating steps are partially shown in FIGS. 1 and 9 to 12 .
  • the method includes a step, as shown in FIG. 1 , of a) picking up and transferring a first bag B1 to be filled from the supply 6 of empty bags B toward the filling means 3 along a second path T 1 and a step, as shown in FIG. 9 , of b) filling the first bag B1 by the filling means 3.
  • a step is provided of c) transferring the first filled bag B1 from the filling means 3 to the sealing head 15 along the first path T 2 , as partially shown in FIG. 10 , followed by a step of d) sealing the filling mouth M of the bag B1, as shown in FIG. 11 .
  • a step is provided of e) transferring the first sealed bag B1 to a collection area by the conveyor means 20, as shown in FIG. 12 .
  • the method comprises an additional step, simultaneous to the step c), of f) picking up and transferring a second bag B2 to be filled, by the pick-up and transfer means 5 toward the filling means 3 along the second path T1.
  • FIG. 11 shows the simultaneity of the two steps and that the second transfer path T 1 of the second bag B2 does not interfere with the first transfer path T 2 of the first bag B1, as the bags are being filled and sealed.
  • the present invention may find application in industry, because it can be produced on an industrial scale in factories operating in the field of packaging and bagging systems.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)

Claims (11)

  1. Une machine (1) pour le remplissage et le scellement automatique de sacs à valve, dans laquelle chaque sac (B) comprend une partie supérieure (P) avec au moins une embouchure de remplissage (M), comportant une valve (V) et une paire de côtés latéraux (S), laquelle machine (1) comprend:
    - des moyens de remplissage (3) pour remplir un sac à la fois, comprenant une buse (4) adaptée pour être introduite dans l'embouchure (M) de chaque sac (B) et montée sur un châssis porteur (2) de la machine (1);
    - une tête de scellement (15) pour sceller la valve (V) de chaque sac rempli (B) à proximité de l'embouchure (M);
    - des moyens de support (16) entre ladite buse (4) et ladite tête de scellement (15) le long d'un premier trajet (T2) pour supporter chaque sac (B) lors de son remplissage et de son scellage;
    - des moyens de transport (20) pour transporter les sacs remplis et scellés (B) vers une zone de collecte;
    - une unité de commande informatisée destinée à commander automatiquement ledit moyen de remplissage (3), ladite tête de scellement (15) et ledit moyen de support (16);
    caractérisé en ce qu'il comprend des moyens de transfert (5) commandés automatiquement par ladite unité de commande informatisée pour prélever chaque sac (B) dans une pile ou une réserve (6) de sacs vides (B) et le transférer vers lesdits moyens de remplissage (3) le long d'un second chemin (T1), ladite tête de scellement (15) étant du type à ultrasons et étant montée avec ledit moyen de transfert (5), ledit moyen de support (16) et ladite unité de commande informatisée sur ledit châssis porteur (2), lesdits moyens de support comprenant des premier (22) et second (23) chariots, qui sont adaptés pour se déplacer le long dudit premier trajet (T2) et pour supporter chaque sac (B) pendant le remplissage et le scellage respectivement, ladite unité de commande étant programmée pour commander le mouvement coordonné dudit moyen de transfert (5) et dudit moyen de support (16) de sorte que le transfert de chaque sac vide (B) vers ladite buse (4) et le déplacement de chaque sac rempli (B) vers ladite tête de scellement (15) peuvent être synchronisés en évitant toute interférence de leurs chemins respectifs.
  2. Machine selon la revendication 1, caractérisée en ce que lesdits moyens de transfert (5) comprennent un bras pivotant (8) ayant une extrémité libre (10) avec une pluralité de ventouses (12) reliées à une source de vide pour saisir chaque sac (B).
  3. Machine selon la revendication 2, caractérisée en ce que ledit bras (8) est articulé sur ledit châssis (2) et peut être étendu le long de son étendue longitudinale de façon que ladite extrémité libre (10) définisse dans l'air ledit second trajet (T1), pour introduire ladite buse (4) dans l'embouchure (M) de chaque sac (B).
  4. Machine selon la revendication 2, caractérisée en ce qu'elle comprend des moyens d'élargissement (13) montés sur ledit bras (8) pour ouvrir l'embouchure de remplissage (M) de chaque sac (B) avant de la raccorder sur ladite buse (4).
  5. Machine selon la revendication 4, caractérisée en ce que lesdits moyens d'élargissement (13) comprennent une tige coulissante (11) qui s'étend à partir dudit bras (8) et est équipée desdites ventouses (12) pour saisir la partie supérieure (P) du sac (B) et d'une paire d'éléments latéraux incurvés (14), ces derniers étant adaptés pour retenir les côtés (S) du sac (B) lorsque la tige (11) glisse vers le haut, en provoquant ainsi l'élargissement de l'embouchure (M) avant de son montage sur ladite buse (4).
  6. Machine selon la revendication 1, caractérisée en ce que lesdits moyens de support mobiles (16) comprennent un premier chariot (22) avec une plate-forme de support (26) pour supporter le sac (B), ledit premier chariot (22) reposant de manière coulissante sur des guides (24) qui s'étendent dans une direction longitudinale (X) entre ladite buse (4) et ladite tête de scellement (15).
  7. Machine selon la revendication 6, caractérisée en ce que lesdits moyens de support mobiles (16) comprennent un second chariot (23) qui est monté coulissant sur des seconds guides (25) qui s'étendent dans une direction sensiblement transversale (Y) et sensiblement perpendiculaire à la première direction, lesdites directions de transfert longitudinale (X) et transversale (Y) étant adaptées pour définir ledit premier trajet (T2).
  8. Machine selon la revendication 7, caractérisée en ce que lesdits premier (22) et second (23) chariots comprennent respectivement des paires de panneaux latéraux sensiblement verticaux (28) pour retenir latéralement chaque sac (B) pendant qu'il est rempli et transféré à ladite tête de scellement (15).
  9. Machine selon la revendication 7, caractérisée en ce que ledit deuxième chariot (23) comprend un fond inclinable (30) et un actionneur agissant sur ledit fond (30) relié à ladite unité de commande pour décharger le sac fermé (B) sur ledit moyen de transport (20) une fois que la vanne (V) a été scellée.
  10. Machine selon la revendication 7, caractérisée en ce que ladite tête de scellement (15) comprend une électrode (18) et une fente transversale (17), ledit second chariot (23) ayant une profondeur (p) inférieure à la longueur (I) de la partie supérieure (P) du sac (B) pour faciliter l'exposition des bords saillants (C) de l'embouchure de remplissage (M) et leur introduction dans ladite fente (17).
  11. Procédé de remplissage et de scellement automatique de sacs à valve (B) utilisant une machine (1) selon l'une ou plusieurs des revendications précédentes, ce procédé comprenant les étapes consistant à:
    a) prélèver un sac à la fois (B1) dans une réserve (6) de sacs vides (B) et transférer ledit sac vers ledit moyen de remplissage (3) le long d'un deuxième chemin (T1);
    b) remplir le premier sac (B1) en utilisant lesdits moyens de remplissage (3);
    c) transférer le premier sac rempli (B1) vers une tête de scellement (15) le long d'un premier chemin (T2);
    d) sceller l'embouchure de remplissage (M) du premier sac rempli (B2) à l'aide de ladite tête de scellement (15);
    e) transférer le premier sac fermé (B1) vers une zone de collecte à l'aide d'un moyen de transport (20);
    caractérisé en ce qu'il comprend une étape de prélèvement f), sensiblement simultanée avec ladite étape de transfert c), suivie d'une étape de transfert d'un deuxième sac (B2) à remplir prélèvé de ladite réserve (6) de sacs vides (B) en utilisant un moyen de transfert (5) pour le transférer vers ledit moyen de remplissage (3) le long dudit deuxième trajet (T1), ledit deuxième trajet de transfert (T1) du deuxième sac (B2) et ledit premier trajet (T2) du premier sac (B1) étant différent et n'interfèrent pas pendant le remplissage et le scellage des sacs respectifs (B).
EP17761577.0A 2016-07-27 2017-07-26 Machine et procédé de remplissage et scellement automatiques de sacs à valve Active EP3490889B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102016000078704A IT201600078704A1 (it) 2016-07-27 2016-07-27 Una macchina ed un metodo per il riempimento e la sigillatura automatica di sacchi provvisti di valvola
PCT/IB2017/054523 WO2018020429A1 (fr) 2016-07-27 2017-07-26 Machine et procédé de remplissage et scellement automatiques de sacs à valve

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EP3490889A1 EP3490889A1 (fr) 2019-06-05
EP3490889B1 true EP3490889B1 (fr) 2019-11-06

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EP17761577.0A Active EP3490889B1 (fr) 2016-07-27 2017-07-26 Machine et procédé de remplissage et scellement automatiques de sacs à valve

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EP (1) EP3490889B1 (fr)
IT (1) IT201600078704A1 (fr)
WO (1) WO2018020429A1 (fr)

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CN108216756A (zh) * 2018-03-20 2018-06-29 唐山市丰南区矿钱机械厂 阀口袋自动套袋装置
CN114933063B (zh) * 2022-04-06 2023-06-06 北京航天石化技术装备工程有限公司 一种用于散袋叠放成垛柔性集装袋的自动套袋机

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Publication number Priority date Publication date Assignee Title
US2996858A (en) * 1957-09-10 1961-08-22 Continental Carbon Co Bag-filling and handling machine
DE2507214A1 (de) * 1975-02-20 1976-09-09 Beumer Maschf Bernhard Vorrichtung zum aufstecken von ventilsaecken auf fuellstutzen einer fuellmaschine
US4688370A (en) * 1986-02-18 1987-08-25 The Dow Chemical Company Method and machine for filing and sealing a multiwall valve bag
US7555878B2 (en) * 2005-02-18 2009-07-07 Ventomatic S.P.A. Device for sealing bags containing powder or granular materials
DE102005062137A1 (de) * 2005-12-22 2007-07-05 Haver & Boecker Ohg Verfahren und Vorrichtung zum Verschweißen von Werkstücken

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EP3490889A1 (fr) 2019-06-05
WO2018020429A1 (fr) 2018-02-01
IT201600078704A1 (it) 2018-01-27

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