EP4183696A1 - Dispositif de fourniture des sacs vides, ainsi que procédé correspondant - Google Patents

Dispositif de fourniture des sacs vides, ainsi que procédé correspondant Download PDF

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Publication number
EP4183696A1
EP4183696A1 EP21209792.7A EP21209792A EP4183696A1 EP 4183696 A1 EP4183696 A1 EP 4183696A1 EP 21209792 A EP21209792 A EP 21209792A EP 4183696 A1 EP4183696 A1 EP 4183696A1
Authority
EP
European Patent Office
Prior art keywords
conveyor
empty
stationary
grippers
distance
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.)
Pending
Application number
EP21209792.7A
Other languages
German (de)
English (en)
Inventor
Marc Tellen
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.)
Beumer Group GmbH and Co KG
Original Assignee
Beumer Group GmbH and Co KG
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 Beumer Group GmbH and Co KG filed Critical Beumer Group GmbH and Co KG
Priority to EP21209792.7A priority Critical patent/EP4183696A1/fr
Publication of EP4183696A1 publication Critical patent/EP4183696A1/fr
Pending 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
    • 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
    • B65B1/02—Machines characterised by the incorporation of means for making the containers or receptacles
    • 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
    • B65B1/06—Methods of, or means for, filling the material into the containers or receptacles by gravity flow
    • 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
    • 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
    • B65B43/46—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 using grippers
    • B65B43/465—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 using grippers for 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
    • 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
    • B65B9/13—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 supplied in a flattened state
    • 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
    • B65B39/00—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers
    • B65B2039/009—Multiple outlets
    • 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
    • B65B39/00—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers

Definitions

  • the invention is based on a device for providing empty sacks for use in an FFS machine, with a production unit for producing the empty sacks from a film web and a plurality of grippers spaced apart in the conveying direction for at least temporarily storing empty sacks.
  • the invention also relates to a corresponding method.
  • Such a device is known from the publication EP 3 647 211 B1 .
  • FFS machines are used to bag a product (e.g. granules, powdery products, etc.). With these machines, a product is bagged at several stations arranged one after the other (e.g. bottom seam welding station, welding seam cooling station, station for filling, head seam welding station), with only one bag being processed in each station. Such FFS machines have a maximum number of bags that can be bagged per hour.
  • the EP 3 647 211 B1 discloses an FFS machine in which two sacks can be filled at once. A conveyor with several attached grippers for empty bags is provided for feeding empty bags to the filling station.
  • the empty sacks have been picked up at the production unit, they remain in the respective gripper of the conveyor until they reach the filling station, so that the conveyor has to cover large distances, move at high speed and, with the empty sacks picked up, first have to be moved in the opposite direction to the conveying direction.
  • the conveyor is also very solid, since it can also be used to transport full sacks. This means that a large mass has to be moved at high speed. This leads to high levels of wear and vibration, so that on the one hand stable guides must be provided for the conveyor and only a lower throughput is achieved.
  • the object of the present invention to further develop a device for providing empty sacks in such a way that the provision of empty sacks to an FFS machine is improved with this device and at the same time less wear is achieved.
  • the conveyor can be designed to be less massive, since it only has to transport empty bags.
  • the grippers are stationary and the device also has at least one conveyor for transferring the empty bags from the production unit to the plurality of stationary grippers and between the individual ones of the plurality of stationary grippers.
  • the conveying direction within the meaning of the application can be understood in particular as the conveying direction of the empty sacks, starting from the production unit towards the filling unit.
  • Any endless tubular bag web that can be provided with top and bottom welds can be used as the film web.
  • the generating unit can in particular have a pair of rollers through whose roller gap the film web is guided.
  • the production unit can have a bottom seam welding device, which can produce bottom welds at predetermined intervals or for predetermined empty bag lengths.
  • the production unit can have a separating device, by means of which the empty bags can be cut to a predetermined length at the head end. Any device by means of which an empty bag can be held can be understood as a gripper.
  • a gripper can be designed in the form of a single gripper or a pair of grippers, which clamps the empty bag laterally or from its top side.
  • Grippers can be stationary within the meaning of the application, to which a conveyor can exert a relative movement in or against the conveying direction.
  • Non-stationary grippers within the meaning of the application can be understood to mean grippers which can be moved by means of a conveyor and cannot exert any relative movement in or against the conveying direction relative to it. Provision can be made for all non-stationary grippers to be able to perform both a translatory and a rotary/oscillating movement.
  • a first distance between at least two grippers arranged upstream is smaller than a second distance between at least two grippers arranged downstream.
  • the upstream grippers can be immediately behind the generating unit in the conveying direction be arranged.
  • the grippers arranged downstream can be arranged directly in front of the filling unit in the conveying direction.
  • the second distance can, for example, be twice as large as the first distance.
  • four grippers can be provided one behind the other, which are at the first distance from one another, and two grippers, which are at the second distance from one another.
  • any other desired number of grippers can also be provided at a first distance and/or at a second distance from one another.
  • the grippers with the first i.e. the smaller distance, represent a buffer store for empty sacks that have been cut to length. After the bottom weld has been created, it must first cool down before the empty sacks can be filled with a product.
  • the bottom welds can cool down in the buffer store without an additional cooling device having to be provided, which would also have to cool the bottom welds.
  • the number of grippers with the first distance can be used to scale the capacity of the buffer store and the temperature at which the bottom weld seams finally arrive in the filling station can be set accordingly.
  • the number of grippers with the second distance from each other can be used to set how many bags are to be filled simultaneously in the filling station, because the third conveyor can use a corresponding number of non-stationary grippers to pick up all the empty bags from the grippers with the second distance at the same time and send them to one corresponding number of filling positions provided in parallel.
  • the buffer store can be dimensioned to match a desired target temperature, and the number of grippers with the second spacing can be adjusted as required to the number of filling locations. It can be provided that the filling station has a stationary full bag gripper for each filling position.
  • This gripper is located centrally between the grippers at the first distance from one another and the grippers at the second distance from one another. Accordingly, this gripper separates two areas from each other, namely that of the buffer store and that of the pick-up area for Empty bags for transfer to the filling unit. At the same time, the gripper forms the last gripper of the buffer store and the first of the pick-up area.
  • a first conveyor is provided for transferring empty bags between the generating unit and the individual ones of the plurality of stationary grippers with the first spacing
  • a second conveyor is provided for transferring empty bags between the individual ones of the plurality of stationary grippers with the second spacing.
  • the first conveyor overcomes the first distance in one conveying movement
  • the second conveyor overcomes the second distance in one conveying movement. Provision can be made for both conveyors to move back and forth simultaneously.
  • the gripper which is at the first distance from the gripper adjacent upstream and at the second distance from the gripper adjacent downstream, lies in the conveying radius of the first and the second conveyor. In the conveying direction, the gripper can represent the last conveying position of the first conveyor and the first conveying position of the second conveyor.
  • first and the second conveyor can have the same conveyor frequency. Provision can thus be made for both conveyors to require the same time span for transporting an empty sack between two adjacent grippers. Since the second conveyor covers a greater distance per conveying process than the first conveyor due to overcoming the second distance, the second conveyor can therefore have a higher movement speed.
  • both conveyors can each consist of an alternating adjustment between an upstream and a downstream position.
  • the distance traveled by the first conveyor with each conveying movement is therefore the first distance and that of the second conveyor is the second distance. It is provided that the conveyors, in their forward movement, i.e. in the conveying direction, convey an empty sack around a gripper, and in their subsequent backward movement carry out an empty run without conveying an empty sack.
  • the coupling element can be a linearly movable rail to which the individual non-stationary grippers are attached equidistantly.
  • the second conveyor has only one non-stationary gripper and therefore only transports one sack per conveying movement.
  • the second conveyor can be designed as a separating gripper.
  • the second conveyor can be suspended in an articulated manner and in particular can perform a rotary or oscillating movement between the two stationary grippers with the second spacing.
  • the FFS machine also has a filling unit with at least two filling positions for filling one empty sack each, with a third conveyor being provided, which for the simultaneous transfer of at least two empty sacks from the at least two grippers at the second distance to the at least two filling positions of the filling unit.
  • the third conveyor can be designed essentially similarly to the first conveyor and can have a plurality of equidistant, non-stationary grippers which are connected via a coupling element.
  • the coupling element can be a linearly guided rail.
  • the difference to the first conveyor can consist in particular in the fact that the third conveyor bridges the distance of two grippers when adjusting between a downstream and an upstream position, in particular covers the distance of twice the second distance.
  • the first and second grippers of the third conveyor can be designed to be movable in relation to one another. This makes it possible for the first and second gripper to be able to take over empty bags from the stationary grippers at the first distance. It plays it does not matter whether the first gripper translates downstream or whether the second gripper translates upstream to reduce the distance between the first and second grippers.
  • the provision of the second empty sack can take place simultaneously with the transfer of the first empty sack to the first stationary gripper and/or during the return of the first conveyor to its first, upstream position.
  • Providing can include creating a bottom weld, cutting to length and transferring the empty bag to the first non-stationary gripper of the first conveyor.
  • a first distance between the first and the second stationary gripper is smaller than a second distance between the second and the third stationary gripper.
  • empty bags are continuously provided at the production unit and then successively transferred in the conveying direction to the individual ones of the plurality of stationary grippers, so that a continuous stream of empty bags gradually passes through the stationary grippers.
  • the number of stationary grippers at the second distance is less than the number of stationary grippers at the first distance.
  • a first conveyor is provided for transferring empty bags between the production unit and the first and the second gripper, and a second conveyor for transporting empty bags is provided between the second and the third stationary gripper. Provision can be made for the first and the second conveyor to transfer empty sacks only between adjacent grippers during each conveying process, so that empty sacks pass through the device successively. This can mean that empty bags are always only moved one step further. Furthermore, it can be provided that the empty bags are always conveyed further in the conveying direction.
  • the first conveyor can be designed in such a way that it conveys several adjacent empty bags one step at a time.
  • the method also has the step: simultaneous transfer of the first empty sack from the second stationary gripper and the second empty sack from the third stationary gripper to a filling station by means of a third conveyor.
  • the third conveyor can therefore be used to move empty bags by two steps. It can also be provided that in the course of transferring the empty sacks into the filling unit, the third conveyor also conveys two full sacks from the filling unit to a downstream step.
  • the empty sacks S1-S4 are produced or provided at a production unit 2.
  • the production unit 2 is supplied with a continuous film web 11 which is guided through the nip of a pair of rollers 12 rolling on one another.
  • the film web 11 is an endless tubular bag web with two layers of film whose side walls are connected to one another. After passing through the nip, the film web 11 is fed to a bottom welding seam station 13, which is transverse to the film conveying direction running bottom seams created. After the bottom weld has been produced, the foil 11 is cut to length and separated. This means that an empty bag is cut to length and separated in one cycle.
  • the bottom weld is created for the following empty sack.
  • the empty sack 3 is then fed to a first non-stationary gripper 7 of the first conveyor 5, gripped by this and the empty sack 3, or in the illustration according to FIG 1 S4, cut to length on its upper side by a separating device 14 which is also arranged behind the nip.
  • the first conveyor 5 has three equidistant, non-stationary grippers 7 which can be moved by a coupling rod 8, the coupling rod 8 being designed as a linearly adjustable guide carriage.
  • the first conveyor 5 can be adjusted between two positions in and counter to the conveying direction X and is in a first upstream position at the time shown.
  • the first non-stationary gripper 7 with the empty bag S4 is located below the production unit 2
  • the second non-stationary gripper 7 with the empty bag S3 is below a first stationary gripper 4 arranged downstream of the production unit 2
  • the third non-stationary gripper 7 with the empty bag S2 below a second stationary gripper 4 arranged downstream of the first stationary gripper 4.
  • This alignment of the non-stationary with the stationary grippers implies that the non-stationary grippers 7 have the same distance d1 to one another as the stationary grippers 4 to one another or the generation station 2 to the first stationary gripper 4
  • a third stationary gripper 4 Arranged behind the second stationary gripper 4 in the conveying direction X is a third stationary gripper 4, which is at a distance d1 from the second stationary gripper and at a distance d2 from a fourth stationary gripper 4.1, which is arranged downstream of the third stationary gripper 4, which is larger is than the distance d1.
  • a second conveyor 6, which can be adjusted between these two positions, is provided for transferring empty sacks 3 or, as shown, the sack S1 between the third and the fourth stationary gripper 4.1.
  • the second conveyor 6 is embodied as a separating gripper which is hinged and can be deflected into both positions of the second conveyor 6 . Accordingly, the second conveyor 6 also has a non-stationary gripper 7 . Between the production unit 2 and the fourth stationary gripper 4 . To realize this passing on the empty bags 3, it is therefore necessary that the the first conveyor 5 and the second conveyor 6 have the same conveyor frequency, so that the second conveyor 6, which overcomes a larger distance d2, has a higher movement speed. In the orientation shown, the second conveyor 6 is at its upstream position of the third stationary gripper 4.
  • a filling station 9 for filling the bags is arranged downstream of the second conveyor 6 or the stationary gripper 4, which has two filling positions 9.1, 9.2 for the simultaneous filling of two empty bags 3 with two separate metering units 17 arranged one behind the other, the two filling positions 9.1, 9.2 are spaced apart by the distance d2.
  • the distance d3 between the fourth stationary gripper 4.1 and the first gripper 15 of the conveyor 10 does not necessarily have to be d2.
  • a third conveyor 10 is provided, which also has at least three equidistant, non-stationary grippers 15 and a coupling device 8 connecting them.
  • the third conveyor 10 can be adjusted between two positions counter to the conveying direction X such that it is arranged in a first upstream alignment with a first and a second of the non-stationary grippers 15 below the third and fourth stationary gripper 4.1, and that this is in a second downstream alignment with the first and the second non-stationary gripper 15 at the first and the second filling position 9.1, 9.2. In the orientation shown, the third conveyor 10 is below the filling unit 9.
  • the first conveyor 5 is in its second, downstream position, so that all non-stationary grippers 7 of the first conveyor 5 are located further downstream, displaced by one step in the conveying direction X.
  • the first conveyor 5 shown can transport three empty bags 3, in 2 shown, the empty sacks S2-S4 are simultaneously conveyed one step further downstream and transferred to a subsequent stationary gripper 4 in each case.
  • the empty bags 3 are transferred from the previous stationary grippers 4 or the production unit 2 to the non-stationary grippers 7 of the first conveyor 5, then the first conveyor 5 is transferred from the first to its second position by means of the guide carriage 8, and then takes place the transfer of the empty bags 3 from the non-stationary gripper 7 to the local stationary gripper 4.
  • the second conveyor 6 is also transferred to its second, downstream position, whereby the non-stationary gripper 7 of the second conveyor 6 first takes over the empty bag 3 from the third stationary gripper 4, then assumes its second position, then the gripped empty bag 3 passes to the fourth stationary gripper 4.1. While the empty bags 3 are refilled in the stationary grippers 4, which are further apart from one another, with a distance d2, the third conveyor 10 remains in its position below the filling unit 9.
  • the third conveyor 10 moves into its second, downstream position and thereby transfers the gripped empty bags 3 to the respective filling positions 9.1, 9.2.
  • the empty sacks 3 are not only transported one step further in the course of this transfer, as in the first or second conveyor 5, 6, but rather are transported further two positions in the conveying direction X in the case of the empty sacks 3.
  • both bags S1 and S2 can be advanced by the distance of d2 plus d3.
  • the first conveyor 5 individual empty bags are conveyed from one position to the immediately following position per cycle.
  • the third conveyor 10 at least two bags that are in the same processing step (for example, bag store, filling station, head seam welding station) are conveyed per cycle.
  • the third conveyor 10 is operated at half the conveyor frequency of the first conveyor 5 .
  • the third conveyor 10 can also be used to bring filled and therefore heavy sacks from the filling station 9 to a downstream processing station, as in figure 5 indicated by the now filled sacks S1 and S2, this halved conveying frequency has the advantage that the third conveyor 10 moves at a reduced speed and can therefore be operated with particularly little wear. While the sacks S1 and S2 are being filled in the filling station, the sacks S3 and S4 are successively transferred by the second conveyor 6 to the downstream stationary grippers 4 so that they are ready for the next filling process to be picked up by the third conveyor 10.
EP21209792.7A 2021-11-23 2021-11-23 Dispositif de fourniture des sacs vides, ainsi que procédé correspondant Pending EP4183696A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21209792.7A EP4183696A1 (fr) 2021-11-23 2021-11-23 Dispositif de fourniture des sacs vides, ainsi que procédé correspondant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21209792.7A EP4183696A1 (fr) 2021-11-23 2021-11-23 Dispositif de fourniture des sacs vides, ainsi que procédé correspondant

Publications (1)

Publication Number Publication Date
EP4183696A1 true EP4183696A1 (fr) 2023-05-24

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EP21209792.7A Pending EP4183696A1 (fr) 2021-11-23 2021-11-23 Dispositif de fourniture des sacs vides, ainsi que procédé correspondant

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040206056A1 (en) * 2003-02-17 2004-10-21 Toyo Jidoki Co., Ltd. Bag-making and packaging machine
EP1050457B1 (fr) * 1999-05-04 2007-05-09 WindmÀ¶ller & Hölscher Dispositif pour fabriquer, remplir et fermer des sacs
DE102013105556A1 (de) * 2013-05-29 2014-12-04 Windmöller & Hölscher Kg Klemmvorrichtung für das Klemmen eines Sackabschnitts einer Folienbahn in einer Füllstation einer Sackfüllanlage
EP3647211B1 (fr) 2018-10-30 2021-04-21 Concetti S.p.A. Machine de remplissage automatique de sacs avec plusieurs stations de remplissage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1050457B1 (fr) * 1999-05-04 2007-05-09 WindmÀ¶ller & Hölscher Dispositif pour fabriquer, remplir et fermer des sacs
US20040206056A1 (en) * 2003-02-17 2004-10-21 Toyo Jidoki Co., Ltd. Bag-making and packaging machine
DE102013105556A1 (de) * 2013-05-29 2014-12-04 Windmöller & Hölscher Kg Klemmvorrichtung für das Klemmen eines Sackabschnitts einer Folienbahn in einer Füllstation einer Sackfüllanlage
EP3647211B1 (fr) 2018-10-30 2021-04-21 Concetti S.p.A. Machine de remplissage automatique de sacs avec plusieurs stations de remplissage

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