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EP3070014A1 - Dispositif d'entaillage et de vidage de sacs - Google Patents

Dispositif d'entaillage et de vidage de sacs Download PDF

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Publication number
EP3070014A1
EP3070014A1 EP16157867.9A EP16157867A EP3070014A1 EP 3070014 A1 EP3070014 A1 EP 3070014A1 EP 16157867 A EP16157867 A EP 16157867A EP 3070014 A1 EP3070014 A1 EP 3070014A1
Authority
EP
European Patent Office
Prior art keywords
bags
rotors
emptying
slitting
rotary blades
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.)
Granted
Application number
EP16157867.9A
Other languages
German (de)
English (en)
Other versions
EP3070014B1 (fr
Inventor
Carlos Roberto KAHL
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.)
Kahl Group SA
Original Assignee
Kahl Group 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 Kahl Group SA filed Critical Kahl Group SA
Publication of EP3070014A1 publication Critical patent/EP3070014A1/fr
Application granted granted Critical
Publication of EP3070014B1 publication Critical patent/EP3070014B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B69/00Unpacking of articles or materials, not otherwise provided for

Definitions

  • the invention in some embodiments, relates to the field of devices for emptying bags, and more particularly, but not exclusively, to devices for emptying bags assembled in apparatuses - e.g. automatic apparatuses - for Slitting and draining bags.
  • a destination site e.g. a factory or a plant - the contents of such bags may be drained into a receptacle such as a container using a suitable machine, possibly an automatic machine.
  • a suitable machine possibly an automatic machine.
  • Such a machine may be configured to grip a bag or a few bags together, and hold the bags and slit the bags above the receptacle so that the bag's contents are poured into the receptacle. After draining the bag's contents, the torn bag may be disposed of in a waste container.
  • European patent EP 1838582 discloses an apparatus for gripping, lifting and emptying layered bags.
  • the apparatus includes a gripping unit including a gripper and a bag slitting and emptying device, and an optional container for debris of bags.
  • the gripper is capable of gripping one or more bags ordered or heaped in disorder.
  • the gripper is incorporated in a gripping unit which also lifts the gripped bags and carries them to the bag slitting and emptying device which is positioned above a receiver.
  • the bag slitting and emptying device simultaneously slits and empties the bags by means of a plurality of rotary blades aligned with horizontal rods.
  • the rods are leveled at a height above the axis around which the blades rotate, and a portion of the debris of the bags, which are suspended pieces of cut bags, are forced by the weight of some of the bags' content and therefore are curved downwards into spaces between any two adjacent rods.
  • the gripper aside By horizontally shaking the gripper aside in both horizontal directions to the rods above the receiver, leftover material born by these suspended debris of bags is discharged and poured downwards into the receiver.
  • the bag slitting and emptying device includes at least two parallel rotary blades for slitting the bags, and at least two rods aligned in a row respectively with the rotary blades, the rods being shakeable relative to the slitted bag.
  • the rods are leveled above the axis of rotation of the rotary blades, and are attached to a frame, which is off centered connected to a wheel driven by a motor, by means of a shaft.
  • the rotating wheel moves the rods in a cyclic horizontal translation.
  • the cyclic displacement of the rods relative to the slitted bags discharges leftovers of the contents of the bags.
  • aspects of the invention relate to devices for emptying bags. More specifically, aspects of the invention, in some embodiments thereof, relate to devices for emptying bags assembled in apparatuses - e.g. automatic apparatuses - for slitting and draining bags.
  • current devices for emptying bags comprise a multitude of parallel rods arranged in a row with rotary blades that cut through the bags as the bags are carried above the blades towards the rods.
  • the rods are leveled at a height so as to penetrate at least partly into the bags through the slits made by the blades.
  • To empty the bags either the bags are vigorously shaken by the gripper relative to the rods, or the rods are vigorously horizontally shaken by a movable frame to which they are attached relative to the bags.
  • the inventors of the current invention have found that shaking the torn or cut bags relative to the rods (or vice versa) is less than optimal for obtaining an effective emptying of the bags. Shaking either the bags or the rods (whereas the rods are all translated back and forth together) generates considerable vibrations to the construction of the apparatus. Also, emptying the bags by generating horizontal shaking is indirect, and therefore requires relatively long time, relatively small distances between the blades (to obtain narrow stripes of bags debris that hinder draining the content of the bags) and a corresponding high number of rods, that are arranged at relatively small distances between each other. Furthermore, to enhance the draining of the contents of the bags, the rods must penetrate into the bags, and in instances where a rod does not penetrate into the bag through a slit, emptying the content of the bag may be incomplete.
  • an apparatus for draining bags comprising a bags transportation module, a bags slitting device and a bags emptying device.
  • the bags slitting device and the bags emptying device may be integrated in a single bags slitting and emptying device.
  • the bags slitting device comprises at least two parallel rotary blades for slitting bags, the top portion of the rotary blades being exposed and thereby being positioned and aligned to slit bags that come into contact with the rotary blades.
  • the bags transportation module is configured to displace bags horizontally, parallel to the rotary blades so that the blades cut through the bags, along the bottom portion of the bags, as the bags are being displaced.
  • the bags emptying device comprises at least two rotors, each having a rotation axis aligned horizontally, and rotor wings arranged along the rotation axis.
  • the rotors are arranged behind the rotary blades, parallel to and as extension of the rotary blades, so that bags that are carried by the bags transportation module are slitted by the rotary blades as they are displaced towards the rotors.
  • the slitted bags may then be positioned above the rotors and possibly above a receptacle configured to receive the contents of the bags, so that the rotor wings may engage with the bags by contacting the bags and possibly even by penetrating partly into the bags through the slits made by the rotary blades.
  • the rotors rotate relative to the slitted bags, thereby widening the slits, and possibly stirring inside the bags and sweeping the contents of the bags downwards through the slits, and thereby draining and emptying the bags.
  • Emptying the bags using rotors is advantageous over emptying the bags using current systems that shake the bags and the horizontal rods relative to each other. Generating rotations in the rotors during the emptying step does not generate any lateral momentum which might generate vibrations of the construction of the apparatus. Further, the rotation of the wings affects a more effective draining of the bags, hence emptying is achieved in a shorter time and requiring a smaller number of blades compared to current systems.
  • the driving assembly is configured to drive the rotors to rotate in fixed directions. According to some embodiments, the driving assembly is configured to drive the rotors to repeatedly reverse the rotation direction, that is to say, to rotate back and forth.
  • the emptying device comprises a driving assembly comprising, according to some embodiments, a motor, a transmission gear and a chain associating the gear with the rotors.
  • a driving assembly comprising, according to some embodiments, a motor, a transmission gear and a chain associating the gear with the rotors.
  • two adjacent rotors are configured to rotate in opposite directions.
  • the rotors are arranged so that the rotor wings of adjacent rotors are interleaved.
  • a bags emptying device is provided, configured as a retrofit to an apparatus for emptying bags.
  • the apparatus for emptying bags may comprise a gripping unit for picking up at least one bag, and a bag slitting and emptying device to which the at least one bag is brought by the gripping unit and at which the at least one bag is emptied.
  • the bag slitting and emptying device may comprises at least two parallel rotary blades for slitting the at least one bag, and further comprises the bags emptying device.
  • the bags emptying device comprises at least two rotors, each having a rotation axis aligned horizontally, and rotor wings arranged along the rotation axis.
  • the rotors are arranged behind the rotary blades parallel with as an extension of the rotary blades, so that the rotor wings rotate relative to the slitted bags thereby engaging with the slitted bags and enhancing emptying the bags.
  • FIG. 1A-1D An embodiment of a bags slitting and emptying device 10 as described herein is schematically depicted in Figures 1A-1D from a front view, from a perspective view, from a side view, and from a top view, respectively.
  • Bags slitting and emptying device 10 comprises a solid open frame 12 and a strut 14 extending between two opposite edges 16 of the frame 12. Strut 14 splits open frame 12 to a first region 20 and a second region 22.
  • First region 20 is dimensioned and configured to house therein a bags slitting device (not shown), e.g. comprising a plurality of rotating blades.
  • Second region 22 houses eight rotors 28 of a bags emptying device 30, as is detailed and explained further below.
  • Bags slitting and emptying device 10 further comprises a receptacle 32 in a shape of a funnel, positioned below open frame 12 thereby being capable of collecting contents of a drained bag (not shown) which is emptied by emptying device 30, and routing such contents to a bottom opening 34 thereof.
  • a bags transportation module (not shown here) may carry bags to be emptied towards first region 20 of bags slitting and emptying device 10.
  • Such a bags transportation module may comprises a gripping unit, e.g.
  • Bags emptying device 30 comprises a driving assembly 36, assembled onto a back edge 38 of open frame 12.
  • Driving assembly 36 comprises a motor 40, a gear unit 42, a chain 44 and eight sprockets 46, each sprocket being mechanically associated with a rotor 28 by a rotor shaft 50 which extends between back edge 38 and strut 14.
  • Driving assembly 36 is configured to drive rotors 28 and each rotor 28 is thus configured to rotate around a respective horizontal rotation axis defined by a respective rotor shaft 50.
  • Motor 40 is engaged with gear unit 42 thereby driving gear unit 42, which drives chain 44.
  • Chain 44 engages gear unit 42 with sprockets 46, so that when gear unit 42 is driven, chain 44 rotates sprockets 46.
  • Driving assembly 36 further comprises an auxiliary sprocket 52, configured to define a suitable zig-zag course of chain 44 around all sprockets 46.
  • Each rotor 28 comprises four rotor wings 54 extending along the rotor shaft, each being directed outwards from the shaft at 90 degrees from the two neighboring rotor wings.
  • Rotors 28 are initially arranged so that the rotor wings 54 of adjacent rotors are interleaved.
  • interleaved it is meant that the rotor wings of one rotor are directed at an angle of 45 degrees relative to the rotor wings of the adjacent rotor.
  • the four rotor wings of one rotor are directed along the vertical and the horizontal, respectively, then the rotor wings of the adjacent rotor(s) are directed at 45 degrees from the vertical and the horizontal respectively.
  • each rotor wing 54 comprises a u-shaped rod directed outwards from the rotor shaft 50 as described above and as is schematically depicted in Figures 2A and 2B .
  • the rotor wings may have a shape of flat or curved sheets (not shown here) extending substantially along the rotor shaft and being directed outwards from rotor shaft 50.
  • driving assembly 36 may be configured and operable to drive rotors 28 to continuously rotate in a fixed direction (each two adjacent rotors rotate in opposite directions from each other) for optimal emptying the bags.
  • driving assembly 36 may be configured and operable to drive rotors 28 to repeatedly reverse the direction of rotation thereof.
  • bags emptying device 30 may be used as a retrofit in a bags emptying apparatus such as an automatic bags emptying apparatus as described in EP 1838582 .
  • bags emptying device 30 may be retrofitted in the slitting and emptying device of Figure 6 of EP 1838582 instead of frame 184 and rods 182 and provided in a row with rotary blades 194 therein.
  • steps of methods according to some embodiments may be described in a specific sequence, methods of the invention may comprise some or all of the described steps carried out in a different order.
  • a method of the invention may comprise all of the steps described or only a few of the described steps. No particular step in a disclosed method is to be considered an essential step of that method, unless explicitly specified as such.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
EP16157867.9A 2015-03-16 2016-02-29 Dispositif d'entaillage et de vidage de sacs Not-in-force EP3070014B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IL23778715 2015-03-16

Publications (2)

Publication Number Publication Date
EP3070014A1 true EP3070014A1 (fr) 2016-09-21
EP3070014B1 EP3070014B1 (fr) 2017-11-22

Family

ID=55587021

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16157867.9A Not-in-force EP3070014B1 (fr) 2015-03-16 2016-02-29 Dispositif d'entaillage et de vidage de sacs

Country Status (2)

Country Link
EP (1) EP3070014B1 (fr)
PT (1) PT3070014T (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3409602A1 (fr) 2017-06-02 2018-12-05 METALOGONDE - Indústria Metalomecânica, Lda. Dispositif agitateur dynamique pour le vidage de sacs
EP3770072A1 (fr) * 2019-07-25 2021-01-27 Muehsam Rozwiazania Dla Przemyslu Sp.J. Dispositif de vidage de sacs

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4995770A (en) * 1989-12-26 1991-02-26 Ford New Holland, Inc. Bag rupturing mechanism for waste material debagging apparatus
WO1995031377A1 (fr) * 1994-05-16 1995-11-23 Bulk Handling Systems, Inc. Systeme de dechirage de sacs
EP1838582A1 (fr) 2004-10-19 2007-10-03 Ayal Robotics and Engineering Ltd. Appareil permettant de vider automatiquement des sacs

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4995770A (en) * 1989-12-26 1991-02-26 Ford New Holland, Inc. Bag rupturing mechanism for waste material debagging apparatus
WO1995031377A1 (fr) * 1994-05-16 1995-11-23 Bulk Handling Systems, Inc. Systeme de dechirage de sacs
EP1838582A1 (fr) 2004-10-19 2007-10-03 Ayal Robotics and Engineering Ltd. Appareil permettant de vider automatiquement des sacs

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3409602A1 (fr) 2017-06-02 2018-12-05 METALOGONDE - Indústria Metalomecânica, Lda. Dispositif agitateur dynamique pour le vidage de sacs
EP3770072A1 (fr) * 2019-07-25 2021-01-27 Muehsam Rozwiazania Dla Przemyslu Sp.J. Dispositif de vidage de sacs

Also Published As

Publication number Publication date
PT3070014T (pt) 2017-12-19
EP3070014B1 (fr) 2017-11-22

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