EP3842369A1 - Entstapelungsgerät - Google Patents

Entstapelungsgerät Download PDF

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Publication number
EP3842369A1
EP3842369A1 EP19219765.5A EP19219765A EP3842369A1 EP 3842369 A1 EP3842369 A1 EP 3842369A1 EP 19219765 A EP19219765 A EP 19219765A EP 3842369 A1 EP3842369 A1 EP 3842369A1
Authority
EP
European Patent Office
Prior art keywords
stacking
sheets
closed loop
stack
movers
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Withdrawn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
EP19219765.5A
Other languages
English (en)
French (fr)
Inventor
Wim Dekocker
Philippe Jean Marie DUPERRAY
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.)
Anheuser Busch InBev SA
Original Assignee
Anheuser Busch InBev 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 Anheuser Busch InBev SA filed Critical Anheuser Busch InBev SA
Priority to EP19219765.5A priority Critical patent/EP3842369A1/de
Priority to CA3149135A priority patent/CA3149135A1/en
Priority to KR1020227006288A priority patent/KR20220038468A/ko
Priority to MX2022001248A priority patent/MX2022001248A/es
Priority to CN202080068655.6A priority patent/CN114450228A/zh
Priority to EP20745222.8A priority patent/EP4003887A1/de
Priority to BR112022001643A priority patent/BR112022001643A2/pt
Priority to PCT/EP2020/071431 priority patent/WO2021018979A1/en
Priority to US17/631,270 priority patent/US20220250862A1/en
Publication of EP3842369A1 publication Critical patent/EP3842369A1/de
Withdrawn legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/66Advancing articles in overlapping streams
    • B65H29/6609Advancing articles in overlapping streams forming an overlapping stream
    • B65H29/6618Advancing articles in overlapping streams forming an overlapping stream upon transfer from a first conveyor to a second conveyor advancing at slower speed
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H1/00Supports or magazines for piles from which articles are to be separated
    • B65H1/08Supports or magazines for piles from which articles are to be separated with means for advancing the articles to present the articles to the separating device
    • B65H1/14Supports or magazines for piles from which articles are to be separated with means for advancing the articles to present the articles to the separating device comprising positively-acting mechanical devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H1/00Supports or magazines for piles from which articles are to be separated
    • B65H1/26Supports or magazines for piles from which articles are to be separated with auxiliary supports to facilitate introduction or renewal of the pile
    • B65H1/263Auxiliary supports for keeping the pile in the separation process during introduction of a new pile
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00Separating articles from piles
    • B65H3/08Separating articles from piles using pneumatic force
    • B65H3/0808Suction grippers
    • B65H3/0816Suction grippers separating from the top of pile
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00Separating articles from piles
    • B65H3/36Separating articles from piles by separators moved in special paths, e.g. enclosing an area
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00Separating articles from piles
    • B65H3/44Simultaneously, alternately, or selectively separating articles from two or more piles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00Feeding articles separated from piles; Feeding articles to machines
    • B65H5/24Feeding articles in overlapping streams, i.e. by separation of articles from a pile
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00Handling processes for sheets or webs
    • B65H2301/40Type of handling process
    • B65H2301/44Moving, forwarding, guiding material
    • B65H2301/447Moving, forwarding, guiding material transferring material between transport devices
    • B65H2301/4472Suction grippers, e.g. moved in paths enclosing an area
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00Handling processes for sheets or webs
    • B65H2301/40Type of handling process
    • B65H2301/44Moving, forwarding, guiding material
    • B65H2301/447Moving, forwarding, guiding material transferring material between transport devices
    • B65H2301/4473Belts, endless moving elements on which the material is in surface contact
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00Handling processes for sheets or webs
    • B65H2301/40Type of handling process
    • B65H2301/44Moving, forwarding, guiding material
    • B65H2301/447Moving, forwarding, guiding material transferring material between transport devices
    • B65H2301/4473Belts, endless moving elements on which the material is in surface contact
    • B65H2301/44732Belts, endless moving elements on which the material is in surface contact transporting articles in overlapping stream
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00Means using fluid
    • B65H2406/30Suction means
    • B65H2406/34Suction grippers
    • B65H2406/344Suction grippers circulating in closed loop

Definitions

  • the present invention relates generally to a denesting apparatus for denesting one or more stacks of sheets.
  • Cardboard based packaging is generally formed of foldable blank or sheets, received generally from one or more stacks and therefore, during the packaging manufacturing process, it is required to sequentially and individually de-stack or unstuck these blanks or sheets from the stacks thereof which are then fed on to a packing line for formation of various kind of packaging.
  • the step of de-stacking of these blanks or sheets has been performed by utilizing various kind of pickers such as for example, manipulators, which may also take the form of robots and/or robotic arms, adapted to pick up a top sheet from the stack intermittently.
  • pickers such as for example, manipulators, which may also take the form of robots and/or robotic arms, adapted to pick up a top sheet from the stack intermittently.
  • pickers are often not cost-efficient and have a high turn-around time and therefore do not reconcile well at instances where a continuous in-feed of these sheets at a high speed is required.
  • WO2008015347 discloses the use of a retractable blower member disposed generally perpendicularly to a stack of sheets so as to blow a jet of air onto the flat items thereby removing the top sheet from the stack thereof.
  • US20110229297 discloses a denesting apparatus having a product carrier plate including a pair of air nozzle assemblies operable to separate a tray from the stack of trays and force the tray against the product carrier plate such that movement of the product carrier plate can selectively discharge the separated tray.
  • EP1541508 discloses a device for the de-stacking of flat objects laid on a stack.
  • the device has a suction device located above the stack support, and a pushing away device with pushing components.
  • the suction device and pushing away device are located at a fixed distance above the stack support, and the pushing components on their end face facing the stack support during the pushing away of an object from the suction head of the suction device have a stop for the next object lifted from the stack by the suction head.
  • US 3,401,831 discloses a denester which, in addition to the suction grippers, includes nozzles which blow pressurized air between the outermost tray and the tray immediately succeeding it, in order to facilitate their separation.
  • Such suction mechanism utilizes suction heads/nozzles which further requires vacuum hoists/supply to create negative air pressure for suction. Therefore, these arrangements are often overly complex in design, and were also undesirably slow in their operation.
  • these mechanisms generally include a drive mechanism with a vacuum cup which is alternatively brought close, put into contact then moved away from the stack of sheets.
  • the vacuum cup is laid against the top sheet of the stack and then carries away the top sheet to bring it away from the stack before laying it down on another work area, for example, on a packaging line conveyor.
  • de-stacking means were utilized to pick the sheet/tray from bottom as described in US20140056684 which discloses a tray denesting apparatus presenting stacks of trays placed upside down within a storage area to a picker mechanism and separating single trays from the stack of trays.
  • a de-stacking means is used to remove individual trays from the tray stack. After picking up the individual tray, a driven rotary device inverts the tray and places the tray onto a tray conveyor located beneath the denesting apparatus.
  • these de-stacking means based mechanisms utilize drive mechanisms adapted to pick up and denest the sheets in accordance to a predetermined distance setting from a predetermined stack.
  • Such system is, however, not designed for cases where a same packaging is a combination of different kind of sheets, such as e.g. a package blank combined with a partition blank.
  • a denesting apparatus for denesting sheets of foldable blanks from one or more stacks thereof.
  • the denesting tool includes one or more closed loop conveying tracks comprising a plurality of sets of de-stacking means movingly configured thereon through a de-stacking means moving mechanism.
  • the denesting apparatus further includes one or more stacking magazines each adapted to hold a stack of sheets to be denested.
  • each of the plurality of sets of de-stacking means is adapted to selectively engage an uppermost sheet from at least one of the stacking magazines and discharge it onto an out-feed conveyor.
  • the picking up of the sheets from the one or more stacks may be performed in any desired order either sequentially or otherwise simultaneously so as to discharge the picked-up sheets in any desired manner either one besides another or in an overlapping manner i.e. one over the other.
  • the de-stacking means may be a conventionally known suction cup and/or vacuum cup having a generally bell-shaped structure and formed of a generally soft material such as a rubber, silicon, and the like, that is impenetrable by air.
  • the de-stacking means moving mechanism includes a plurality of de-stacking lugs, each adapted to movingly engage one of the sets of one or more de-stacking means through an engagement means.
  • each of the de-stacking lugs is movingly configured onto one of the closed loop conveying tracks through one or more de-stacking movers movingly configured thereon.
  • the denesting apparatus comprises two parallel closed loop conveying tracks wherein the de-stacking means moving mechanism includes a plurality of de-stacking lugs movingly configured onto the parallel closed loop conveying tracks through one or more de-stacking movers movingly configured thereon and wherein the de-stacking movers on the parallel closed loop conveying tracks are independently controlled to achieve rotation of the picked-up sheet.
  • the engagement means may be any conventionally known mechanism suitable for supporting one or more de-stacking means onto the de-stacking lugs and is selected from one or more of, but not limited to, a supporting plate.
  • the engagement means includes an articulating engagement assembly for movingly engage one of the sets of one or more de-stacking means onto the one or more de-stacking lugs, and adapted to provide generally a vertical and/or transversal movement along with a longitudinal movement, enabling a picking up a sheet from one of the stacking magazines.
  • the articulating engagement assembly includes an articulated bracket having a first end connected to a first de-stacking mover through a first de-stacking lug, a second open end connected to a second de-stacking mover through a second de-stacking lug and a pivotally movable center end connected to a supporting plate having one or more de-stacking means configured thereon, such that a longitudinal movement of the de-stacking movers towards and/or away from each other enables a generally vertical movement to the supporting plate and in turn to the one or more de-stacking means so as to pick up a sheet positioned at a distance thereto.
  • the supporting plate is a generally horizontally rotatable plate facilitating rotation of the sheet picked up by the one or more de-stacking means.
  • the one or more stacking magazine is a vertically movable supporting rack adapted to move between a top position P T and a bottom position P B using a vertical movement mechanism.
  • the vertical movement comprising a vertical rail comprising one or more stacking movers movingly configured thereon and each of the stacking movers engaging the supporting rack using a connecting member such that the stacking member is movable between the top position P T and the bottom position P B through the stacking movers.
  • the vertical movement mechanism may be any suitable movement mechanism.
  • the top position P T of the stacking magazine is positioned at a height H T away from a base platform, corresponding to the base position P B , such that a top sheet of the stack is positioned at a height H S suitable to be picked up by at least one of set of the de-stacking means.
  • the denesting apparatus further includes a retractable lifting means positioned over the one or more stacking magazine and adapted to support at least a sub-stack of sheets such that the top sheet of the corresponding sub-stack is positioned at the height H S suitable to be picked up by at least one of the de-stacking means.
  • the retractable lifting means is adapted to be vertically movable such that after removal of the top sheet, the next top sheet is always positioned at the height H S suitable to be picked up by the one or more de-stacking means.
  • the retractable lifting means is configured to retract back and move back to its base position, once each of the sheets supported thereon is picked up by the one or more de-stacking means.
  • retractable lifting means is further configured to open and pick up another sub-stack of the sheets at its base position.
  • the apparatus further includes an infeed conveying line connected to the one or more stacks such that as soon as an empty magazine is received at its bottom position, it gets replenished with new stack of sheets.
  • the stacking magazine may be a horizontally moving conveyor.
  • the one or more closed loop conveying tracks, the lifting plate, and the one or more stacking magazines are adapted to move at a predetermined pitch so as to denest the stacks of the one or more sheets onto the out-feed conveyor continuously.
  • the one or more closed loop conveying tracks, the lifting plate, and the one or more stacking magazines are adapted to move intermittently at a variable pitch as required, so as to denest the stacks of the one or more sheets onto the out-feed conveyor intermittently.
  • the vertical movement of the stacking magazine is configured in such a way that when the lifting plate is in its retracted position, the stacking magazine is in its top position such that the top sheet is positioned at the height H S suitable to be picked up by the one or more de-stacking means.
  • the denesting apparatus includes a first powering means enabling a movement of each of the one or more closed loop conveying tracks, the infeed conveyor, the retractable lifting means, the stacking magazine and the out-feed conveyor.
  • the first powering means may be selected from one or more of but not limited to various conventionally known linear motors, asynchronic motors, machines, servo drives, and the like conventionally known in the art.
  • each of the plurality of movers is individually powered by a second powering means, preferably a linear motor, utilizing each of the movers as a rotor thereof and the corresponding track as a stator thereof.
  • a second powering means preferably a linear motor
  • the second powering means may be selected from one or more of, but not limited to, various conventionally known asynchronic motors, machines, servo drives, and the like, conventionally known in the art.
  • the sheet of foldable blank is formed of a material selected from one or more of, but not limited to, a carton, paperboard, thermoplastic, hybrid material, and the like.
  • the denesting apparatus further comprises a control unit for optimizing the movement of the one or more closed loop conveying tracks, the one or more de-stacking means, the one or more stacking magazines, the retractable lifting means, and the incoming conveying line.
  • control unit includes one or more sensors, one or more input units, a processor unit and an output unit.
  • a method of denesting one or more stacks of sheets, each supported onto a corresponding stacking magazine, using the denesting apparatus of the present invention includes receiving one or more stacks of sheets of a predetermined material.
  • the method further includes picking up a top sheet from the one or more stacks in a predetermined manner either sequentially or otherwise simultaneously.
  • the method further includes placing the picked-up sheet onto the out-feed conveyor in any desired manner, either one besides the other or otherwise one over the other.
  • the method includes rotating the picked-up sheet before placing it onto the out-feed conveyor.
  • the step of picking up the one or more sheets from the one or more stack includes the step of contacting at least the one or more de-stacking means, with one of the stacks such that the top sheet of the stack is picked up by the corresponding de-stacking means.
  • the method includes picking one sheet at a time sequentially.
  • the method includes picking more than one sheet at a time simultaneously.
  • the method includes dropping the simultaneously picked up sheet either simultaneously one besides other or otherwise sequentially one over the other.
  • the method includes moving the each of the one or more or more pair of de-stacking lugs together in a predetermined sequence of vertical movement and/or transversal movement and/or longitudinal movement, so as to position the corresponding de-stacking means in contact with the top sheet of the desired stack of sheet.
  • the pushing sequence is determined by the control unit on the basis of an input from a user and/or input from one or more sensors.
  • the present application discloses a denesting apparatus, for picking up sheets individually from one or more stacks in any desired order and discharging them onto an out-feed conveyor in any desired manner.
  • the denesting apparatus while being efficient, is able to destack sheets from multiple stacks having sheets of different shapes, sizes and material without requiring any changes in the functional elements thereof. Further, the sheets may be picked up either simultaneously or otherwise sequentially and may be discharged on to an out-feed conveyor, placed either one besides another or otherwise one over another, either continuously or otherwise intermittently and in varying configurations, speeds, and the like, without requiring making any change within the apparatus.
  • the present invention provides a denesting apparatus 100 for de-stacking one or more stacks of sheets or b 110 individually and dropping them onto an out-feed conveyor 180.
  • the denesting apparatus 100 includes one or more overhead closed loop conveying tracks 130 comprising a plurality of sets of de-stacking means 140 movingly configured thereon, through a de-stacking means moving mechanism 150.
  • the denesting apparatus 100 further includes one or more stacking magazines 120 , each adapted to support one of the one or more stacks of sheets 110. Further, each of the stacking magazines 120 is connected to an incoming conveying line (not shown) carrying a supply of stacks of sheets 110.
  • the denesting apparatus 100 furthermore includes a retractable lifting mechanism 160 adapted to support at least a sub-stack of the stack of sheets 110 such that a top sheet is positioned at a height suitable to be picked up by at least one of the sets of de-stacking means 140.
  • the one or more stacks of sheets 110 are first positioned onto the one or more stacking magazines 120. Thereafter, one or more sets of the de-stacking means 140 is movingly positioned towards the one of the one or more stacks 110 such that the top sheet from at least one of the stacking magazines 120 is picked up in any desired order, and discharged towards the out-feed conveyor 180 in any desired manner.
  • an exemplary denesting apparatus 200 having a single closed loop conveying track 230 for denesting one or more stacks of sheets 210 , including a first stack 210a positioned onto a first stacking magazine 220a , and a second stack 210b positioned onto a second stacking magazine 120b, onto an out-feed conveyor 280.
  • the closed loop conveying track 230 includes a plurality of sets of one or more de-stacking means 240 movingly configured thereon through a de-stacking means moving mechanism 250.
  • the de-stacking means moving mechanism 250 includes a plurality of de-stacking lugs 252 ( Figs 5A , 5b ), each movingly configured onto the closed loop conveying track 230 through a de-stacking mover 254 ( Figs 5A , 5b ). Further, each of the de-stacking lugs 252 is adapted to engage to at least one of the sets of de-stacking means 240 through an engagement means 255 ( Fig. 5a ).
  • the engaging means 255 includes an articulating engagement assembly 270 movingly engage one of the sets of one or more de-stacking means 240 onto one or more de-stacking lugs 252.
  • each set of the one or more de-stacking means 240 is positioned onto a supporting plate 242 , having a first side 242a connected to a pair of de-stacking movers 254a , 254b , pivotally and movably attached to each other through one or more articulated mounting brackets 272.
  • the articulated bracket 272 is a conventionally known mounting bracket and includes a first attachment bracket 274 connected to a second attachment bracket 276 at their distal ends at a connection point C such that the articulated bracket has three open ends, i.e. a first open end 274a at a proximal end of the first attachment bracket 274 , a second open end 276a at the proximal end of the second attachment bracket 276 and a pivotally movable center end 275 at the connection point C.
  • the articulated movement assembly 270 includes a first de-stacking mover 254a connected to a second de-stacking mover 254b through the articulated mounting brackets 272 , each of the movers 254a , 254b connected at one of the open ends 274a , 274b of the articulated bracket 272 , such that the articulated bracket 272 is pivotally movable in a generally vertical plane throughout the longitudinal range of motion of the first mover 254a and the second movers 254b , towards and/or away from each other.
  • the articulated assembly 270 is connected to the first side 242a of the supporting plate 242 at the pivotally movable center end 275 thereof.
  • the supporting plate 242 In a collapsed position, where the articulated mounting bracket 272 is closed, such that each of the pair of pivotally connected de-stacking movers 254a, 254b are oriented in a substantially coinciding position, the supporting plate 242 is at its initial position. In an opened position, where the articulated mounting bracket 272 opens up pivotally, the pair of the movers 254a, 254b may be moved towards or away from each other such that the corresponding supporting plate 242 is moved vertically upward or pivotally towards or away from corresponding de-stacking lugs 252a, 252b.
  • the articulated movement assembly 270 having the pair of movers 254a, 254b is pivotally connected for longitudinal movement in a generally horizontal plane in a conventional manner.
  • the articulated movement assembly 270 is movingly supported on to the closed loop conveying track 230 such that a horizontal longitudinal movement of the movers 254a, 254b towards and away from each other is possible.
  • Such a movement of the pair of movers 254a, 254b provides operative power for enabling the movement of the mounting bracket 272 between its collapsed position and its open position, thereby enabling a range of vertically upward and pivotal extensions along with a longitudinal movement of the shaping supporting plate 242 onto the closed loop conveying track 230.
  • the supporting plate 242 and the corresponding set of de-stacking means 240 may be positioned at any desired distance away from the de-stacking lugs 252 , while moving in an operative orientation generally in a vertical and/or transversal and/or horizontal direction.
  • the engagement means 255 may be any conventionally known mechanism suitable for supporting the set of one or more de-stacking means 240 onto the de-stacking lugs 252 and is selected from one or more of but not limited to a supporting plate as illustrated in Fig. 5b
  • the denesting apparatus 200 includes multiple and preferably a pair of overhead closed loop conveying tracks 230 namely 230a, 230b for denesting one or more stacks 210 including a first stack 210a positioned onto a first stacking magazine 220a, and a second stack 210b positioned onto a second stacking magazine 220b.
  • the individual movement of the sets of de-stacking means 240 of each of the tracks 230a, 230b may be utilized to speed up the process by utilizing either as a dedicated track 230 for predetermined stacks 210 or otherwise in situations where there is a need of simultaneously pick up and drop down of the sheets within stacks 210 onto the out-feed conveyor 280.
  • de-stacking means 240 of both the tracks may be adapted to sequentially or simultaneously pick up the top sheet from the same stack 210.
  • the sets of de-stacking means of the pair of tracks 230a , 230b may be utilized in any possible manner so as to de-stack one or more, stacks 210 , onto the out-feed conveyor 280.
  • This embodiment is particularly advantageous due to the fact that it provides multiple closed loop conveying tracks 230 and therefore the de-stacking means 240 each powered by a single light weight powering means for managing the operation of the denesting apparatus 200 and therefore is considered as a further efficient way to implement various embodiments of the present invention.
  • FIGS. 2 and 3 schematically show the arrangement of the basic components of the denesting apparatus 200 of the present invention.
  • secondary components such as couplers, connectors, support structures and other functional components known to one of skill in the field of denesting apparatuses and more particularly the denesting of foldable blanks for use with conveyor systems, may be incorporated within the denesting apparatus 200.
  • Such commercial arrangements are included in the present invention as long as the structural components and arrangements disclosed herein are present. Accordingly, it is to be contemplated that the denesting apparatus 200 may be configured to be used for any kind of foldable blank of any possible shapes as deems possible without deviating from the scope of the current invention.
  • the one or more stacks of sheets 210 may be formed of a plurality of sheets in the form of foldable blanks, each adapted to form a primary or secondary package and/or a component thereof.
  • the first stack 210a positioned onto the first stacking magazine 220a may be stack of plurality of blanks each adapted to form a box shaped secondary package.
  • the second stack 210b positioned onto the second stacking magazine 220b may be a stack of plurality of partition sheets, each adapted to form a partition for the box shaped secondary package.
  • the stack of sheets 210 may include any number of stacks of sheets, adapted to form any kind of output product, to be denested using the apparatus 200 of the present invention.
  • Each of the stacking magazines 220a , 220b is connected to an incoming conveying line 205 each carrying a supply of stack of sheets 220a , 220b respectively.
  • the stacking magazines 220 are generally vertically movable storage racks 222 adapted to move between a top position P T and a bottom position P B through a vertical movement mechanism 224.
  • the top position P T is positioned at a height H T away from a base platform corresponding to the base position P B , such that the top sheet of the stack 210 is positioned at a height H S suitable to be picked up by at least one set of the de-stacking means 240.
  • the vertical movement mechanism 224 includes a vertical rail (not shown) positioned besides the storage rack 222 having one or more stacking movers 226 movingly configured thereon, and adapted to engage the storage rack 222 using a connecting member (not shown) such that the storage rack 222 is movable between its top position P T and the bottom position P B through the stacking movers 226.
  • the vertical movement mechanism 224 may be any suitable movement mechanism.
  • the denesting apparatus 200 further includes a retractable lifting means 260 , illustrated in Figs 4a-4d positioned over each of the one or more stacking magazines 220 and adapted to support at least a sub-stack of the sheets, such that the top sheetis positioned at the height H S suitable to be picked up at least by one set of the de-stacking means 240 of the one or more closed loop conveying tracks 230.
  • a retractable lifting means 260 illustrated in Figs 4a-4d positioned over each of the one or more stacking magazines 220 and adapted to support at least a sub-stack of the sheets, such that the top sheetis positioned at the height H S suitable to be picked up at least by one set of the de-stacking means 240 of the one or more closed loop conveying tracks 230.
  • the retractable lifting means 260 is generally a flat lifting plate and is moveable vertically between a base position L BP and a top position L TP thereof, such that at any moment the top sheet is made to be positioned at the H S suitable to be picked up by at least one set of the de-stacking means 240. Further, the retractable means 260 is movable between an open position P O and a retracted position P R (not shown).
  • Such lifting plate may alternatively also consist of a plurality of forks that may move away or towards each other
  • the base position L BP of the retractable lifting means 260 is generally same as the top position P T of the storage rack 222 of the stacking magazine 220 such that when moved to open position P O from the retracted position P R , the retractable lifting means 260 supports the entire stack 210 thereon. Further, in such instances, the lifting means 260 moves vertically with removal of each top sheet to a distance same as a thickness of the sheet such that the top sheet is always positioned at the height H S , The top position L TP of the lifting means 260 is such that a bottommost sheet 215 ( Fig. 4d ) of the stack 210 is positioned as the top sheet. Once the stack 210 has been completely denested, lifting means 260 is adapted to retract back to the retracted position P R and vertically move down to the base position L BP .
  • the out-feed conveyor 280 is generally an outgoing conveyor positioned substantially below the one or more closed loop conveying track 230 at a height H C from the base platform, substantially similar to the height H T of the top sheet such that the already pick up top sheet may be suitably dragged and/or dropped onto the out-feed conveyor 280 for further processing.
  • the denesting apparatus 200 further includes a first powering means (not shown) for enabling a movement of the one or more closed loop conveying tracks 230 , the in-feed conveyor 205 , each of the one or more stacking magazines 220 , the retractable lifting mechanism 260 , the out-feed conveyor 280 and various sub-components thereof.
  • a first powering means (not shown) for enabling a movement of the one or more closed loop conveying tracks 230 , the in-feed conveyor 205 , each of the one or more stacking magazines 220 , the retractable lifting mechanism 260 , the out-feed conveyor 280 and various sub-components thereof.
  • the first powering means is a linear servo motor adapted to move each of the one or more closed loop conveying tracks 230 , the in-feed conveyor 205 , each of the one or more stacking magazines 220 , the retractable lifting mechanism 260 , the out-feed conveyor 280 at a first predetermined pitch facilitating a continuous operation of each of the components of the denesting apparatus 200 such that the incoming supply of the stacks of sheets 210 is continuously denested and transferred onto the out-feed conveyor 280 in any desired order and in any desired manner.
  • the first powering means is a linear servo motor adapted to move each of the one or more closed loop conveying tracks 230 , the in-feed conveyor 205 , each of the one or more stacking magazines 220 , the retractable lifting mechanism 260 , the out-feed conveyor 280 at a dynamically adjustable variable pitch facilitating an intermittent operation of each of the components of the denesting apparatus 200 such that the incoming supply of the stacks 210 of the sheets is denested and transferred onto the out-feed conveyor 280 , intermittently and when desired.
  • the denesting apparatus 200 further includes a second powering means (not shown) for enabling a movement of each of the movers including, the de-stacking movers 254 , and the stacking movers 226 along the corresponding tracks and/or rails.
  • the first powering means is linear servo motor.
  • the linear motor is a generally moving magnet type of motor conventionally known in the art. Further in such embodiments, the linear motor utilizes the corresponding tracks and/or rails as a stator and each of the movers as a rotor thereof.
  • the movers 254, 226 are utilized as stator whereas the tracks or rails are utilized as the rotors.
  • each of the movers 254, 226 may include built in coils and each of the corresponding tracks or rails may include magnets configured thereon in a longitudinal direction such that the movers are able to come into an electromagnetic interaction, thereby enabling a movement thereof.
  • the denesting apparatus 200 may further include one or more control units (not shown) for managing the operations thereof, and particularly for managing the working of the first powering means and/or the second powering means and more particularly the movement of the de-stacking movers 254a and b, so as to optimize the sequence of the longitudinal and/or vertical and/or transversal movement of the supporting plate 242 , and therefore the one or more support pads 240 , in a predetermined sequence.
  • the predetermined sequence is particularly required to be evaluated in the instances where a specific predetermined order has to be followed for picking up the top sheets 211 , from the one or more stacks 210.
  • control unit may include an input unit for receiving inputs related to the predetermined order of denesting the stacks 210 and the desired manner of discharge of the already picked up top sheets 211 , onto the out-feed conveyor 280. Further, the control unit may include a plurality of sensors (not shown) for tracking the parameters such as for example, position, width and/or height of the of the sheets or blanks to be discharged, for sensing when the one or more stacks 210 is empty, for sensing if the lifting means reached its top position, and the like.
  • the control unit may further include a processor unit for processing the data captured by the input unit on the basis of predetermined logics / rules for facilitating the movement of the plurality of movers 254 , 226 , the vertical movement of the stacking magazine 220 , and the retractable lifting mechanism 260.
  • the control unit may further include an instruction unit that delivers the instructions to various components such as various powering means, linear motors, motors, driving units, or the like, to facilitate a desired and smooth operation.
  • control unit may be provided as a computer program product, such as may include a computer-readable storage medium or a non-transitory machine-readable medium maintaining instructions interpretable by a computer or other electronic device, such as to perform one or more processes.
  • each of the plurality of sheets of the stack 210 is generally formed from a recyclable material selected from one or more of but not limited to any desired material such as including all kind of papers, fiberboard, corrugated board, foldable blanks, hybrid material, or any combinations thereof. Further, the shape and size, including the thickness of the sheets or blanks , may be varied depending on the design constraints and requirements for its application. In some other embodiments, the sheets or blanks may be made of a light weight plastic material selected from one or more of, but not limited to, plastic material such as group of thermoplastics including acetal, acrylic, cellulose acetate, polyethylene, polystyrene, vinyl, and nylon. In yet other embodiments, the sheets or blanks may be made of any material suitable to be denested using the denesting apparatus 200 , of the present invention
  • the one or more de-stacking means 240 is formed of a conventionally known suction cup and/or vacuum cup having a generally bell-shaped structure and formed of a generally soft material such as a rubber, silicon, and the like, that is impenetrable by air.
  • a de-stacking means 240 has been vastly utilized for lifting an object by application of vacuum created there within, when applied with a force against a flat surface such as a sheet.
  • the number, size, and dimension of such de-stacking means 240 is determined on the basis of weight, dimensions, and material of the sheets or blanks to be picked up from the stack 210.
  • the denesting apparatus 200 may further be provided with a supply of negative pressure, for example, in the form of a vacuum creator, which may be utilized by de-stacking means 240 for picking such heavy sheets.
  • the present invention may be utilized for any number of stacks without deviating from the scope of disclosure and depending upon the design constraints of the package to be formed.
  • the one or more stacks 210 may include a first stack 210a of foldable blank of carton, a second stack 210b of a partition for the carton, a third stack 210c holding sheet for forming a handle of the carton and so on.
  • the denesting apparatus 200 may be used to denest only a single stack 210. In all such embodiments, the number of stacking magazines 220 remains equal to number of stacks 210 so as to individually support the stacks 210 thereon.
  • each of the conveyors of the denesting apparatus 200 including the one or more closed loop conveying tracks 230 , the in-feed conveyor 205 , and the receiving conveyor 280 is generally a vertically positioned closed loop conveying track conventionally known in the art.
  • each of the conveyors of the denesting apparatus 200 including the one or more closed loop conveying tracks 230 , the in-feed conveyor 205 , and the out-feed conveyor 280 may be a generally horizontal positioned closed loop conveying track.
  • each of the conveyors of the denesting apparatus 200 including the one or more closed loop conveying tracks 230 , the in-feed conveyor 205 , and the receiving conveyor 280 may be configured as a virtual closed loop conveyor.
  • the virtual closed loop conveyor is generally a closed loop conveyor similar to a circular conveyor, in which the circular connecting edges of the conveyors on both the ends are replaced by straight shiftable conveyor portions adapted to move back and forth and avoiding the need of moving the movers through the entire circumference of the closed loop conveying track, and is therefore a very fast alternative to the conventionally known closed loop conveying tracks.
  • the closed loop conveyor being made of longitudinal rails, is therefore much more cost efficient than any conventionally known closed loop conveying tracks and/or conveyors. Additionally, the back and forth movement may also be helpful in providing additional pressure while performing operations such as pushing operation is therefore further preferred.
  • the stacking magazine 220 may be a horizontal conveyor (not shown) adapted to receive a supply of stacks 210 of the sheets or blanks such that the top sheet of one of the stack 210 is positioned at a distance suitable to be picked up by the one or more de-stacking means 240. Further, once the stack 210 is exhausted, another stack 210 is positioned at the distance suitable to be picked up by the one or more de-stacking means 240 such that there is no interruption there between.
  • the denesting apparatus 200 is adapted to be positioned onto an input line of a package manufacturing unit provided with one or more stacks 210 of foldable blanks for forming generally box shaped secondary packages.
  • the denesting apparatus 200 denests the foldable blanks from the one or more stacks 210 placed onto the one or more stack magazines 220 in any predetermined order and places onto the out-feed conveyor 280 in any desired manner.
  • Each of the stacks 210 is denested in a generally top to bottom manner, however, not restricted to any particular way of denesting and therefore it is contemplated that the denesting apparatus of the present invention may be utilize to perform denesting operation in any possible way without deviating from the scope of the present invention.
  • Fig. 6 is a flow diagram illustrating a method 600 of de-stacking sheets or blanks from one or more stacks 210 thereof placed onto one or more stacking magazines 220 , either simultaneously, or otherwise sequentially in any desired manner, either one besides other or otherwise in an overlapping manner, using denesting apparatus 200 of the present invention.
  • the method 600 starts at step 602 and proceeds to step 604 where one or more stacks 210 of sheets is received onto one or more stacking magazines 220.
  • the one or more stacking magazines 220 is positioned generally at a distance from the one or more overhead closed loop conveying tracks 230 such that the top sheet of each of the stacks 210 is positioned at the height H S and at a distance suitable to be picked up by at least one of the set of de-stacking means 240 of the one or more closed loop conveying tracks 230.
  • the steps proceed to step 606 , where the one or more sets of de-stacking means 240 picks up at least one of the top sheets 211 from at least one of the stacks 210.
  • the one or more sets of de-stacking means 240 is adapted to pick up one or more top sheets 211 from the one or more stacks 210 sequentially in any possible order.
  • the one or more sets of de-stacking means 240 of the one or more closed loop conveying tracks 230 is adapted to pick one or more top sheets 211 from the one or more stacks 210 simultaneously at the same time.
  • each of sets of the de-stacking means 240 is adapted to pick up the top sheet from the one or more stacks 210 independently of the other sets of de-stacking means 240.
  • step 608 each of the stacking magazine 220 is made ready to be denested such that the top sheet of the each of the stack 210 is positioned at the height H S suitable to be picked up by at least one of the set of de-stacking means 240 of the one or more closed loop conveying tracks 230.
  • Such a step involves multiple sub-steps and is described in flow chart as illustrated in Fig. 7 , as a method 700 for keeping each of the stacks 210 ready for being denested and will be described later on.
  • each of the set of de-stacking means 240 discharges the already picked up sheets 211 , by placing and/or dropping it onto the out-feed conveyor 280 in any desired manner.
  • the one or more sets of de-stacking means 240 is adapted to drop the picked up top sheets 211 sequentially one besides other in any possible arrangement.
  • the one or more sets of de-stacking means 240 is adapted to drop the picked-up sheets 211 sequentially one over the other in an overlapping manner.
  • the one or more sets of the de-stacking means 240 of the one or more closed loop conveying track 230 is adapted to drop the picked-up sheets 211 simultaneously one besides other in any possible arrangement.
  • the one or more sets of de-stacking means 240 of the one or more closed loop conveying tracks 230 is adapted to drop the picked-up sheets 211 simultaneously one over the other in an overlapping manner.
  • each of the set of de-stacking means 240 is adapted to drop up the picked-up sheets 211 independently of the other de-stacking means 240 in any desired order and in any desired manner.
  • the method 600 further includes an optional step 609 of rotating the picked-up sheets 211 before dropping onto the out-feed conveyor 280 at step 610.
  • the supporting plate 242 in such embodiments is adapted to be rotated horizontally in a range of angles so as to rotate the picked-up sheet 211 at any desired angle before being dropped onto the out-feed conveyor 280.
  • the method 700 as illustrated in Fig. 7 for preparing each of the one or more vertically movable stacking magazines 220 with the one or more stacks 210 positioned in such a way that the top sheet is always positioned at the height H S suitable to be picked up by at least one of the set of de-stacking means 240 of the one or more closed loop conveying tracks 230.
  • the method starts at step 702 and proceeds to step 704 where the vertically movable supporting rack 222 is moved to its top position P T as illustrated in Fig. 4a .
  • the method then proceeds to step 706 where the retractable lifting means 260 , vertically positioned anywhere between its base position L BP and the top position L TP , is moved to its open position P O such that at least a sub-stack 214 gets supported thereon the lifting means 260 as illustrated in Fig. 4a , 4b .
  • the lifting means 260 is opened at its base position L BP , such that the entire stack 210 is supported onto the lifting means 260.
  • the vertically movable supporting rack 222 moves back to its base position P B and may be replenished there at by the incoming conveying line 205 as illustrated in Fig. 4c .
  • the retractable lifting means 260 vertically moves up till it reaches its top position L TP such that the bottom most sheet 215 is positioned as the top sheet as illustrated in Fig. 4d .
  • Such a vertical movement of the lifting means 260 is synchronized with the removal of the top sheet and is therefore moved vertically each time the top sheet is removed, and to a distance same as the thickness of the sheet 290 so as to assure that the top sheet is always positioned at the height H S , Thereafter, at step 712 when the lifting means 260 is exhausted, retracts back to its retracted position P R and moves vertically downwards to its base position L BP .
  • the method 700 further includes a step 714 performed in parallel to the step 712 where the supporting rack 222, replenished with new stack 210 moves vertically upwards till it reaches its top position P T such that there is no interruption within the denesting operation of de-stacking means 240.
  • step 714 the method 700 checks if there are more stacks to be denested, and if yes, loops back to step 706 and is repeated until there are more stacks to be denested. If, however no further stacks are to be denested, the storage rack 222 moves to its base position P B and kept in a suspended state.
  • the present invention relates to a denesting apparatus 200 for continuously and/or intermittently at a constant and/or variable speed, de-stacking sheets individually from one or more stacks in any desired order and discharging them onto an out-feed conveyor in any desired manner.
  • the denesting apparatus 200 is adapted to receive a supply of stacks 210 of foldable blanks in form of sheets , from an incoming conveying line 205 , adapted to continuously fill any of the already exhausted stacks 210 such that there are no interruptions during refilling the stacking magazines 220 with new stacks 210.
  • the possibility of providing different kind of pushing sequence to the one or more sets of de-stacking means 240 allows picking up the top sheets 211 in any desired order and discharging in any desired manner.
  • Such an optimized and focused picking up and dropping down the sheets in addition to a complete control of the speed, direction of the placement of the sheets allows the possibility of using a same conveying line for discharging multiple sheets together while utilizing the width of the out-feed conveyor and avoiding misalignment and therefore, any damage to the sheets being discharged there through.
  • the present invention is additional advantageous in providing an input line of packaging apparatus of different sub-parts of the packages, in accordance with the predetermined shape and configurations of the packages to be achieved.
  • the denesting tool is adaptable to different dimensions of foldable blanks and is therefore well suitable to process packages of different sizes and shapes with ease and efficiently and not requiring changing the entire apparatus for denesting sheets of different predetermined shapes and sizes.
  • the present invention provides the possibility of manufacturing the conveyor system with integrally formed denester apparatus 200.
  • Such a conveyor system for forming secondary package while being cost-efficient, is very quick and easy to use and offers comfortable handling of packages of any shape, size or any variety of configurations.
  • a single conveyor system may utilize as many as denesting apparatuses within the same arrangement. Further, in case of one denesting apparatus is not working, rest can keep working and therefore, the fault tolerance of the plant can be increased.
  • denesting apparatus 200 of present invention has been disclosed with reference to foldable blanks, it may be used to denest all currently known sheet types, e.g., constructed of materials such as thermoplastic, hybrid materials, woven metallic fabric that may include ferrous or nonferrous metals, etc., or any other suitable material. Even in instances where heavy sheets are to be picked up, the strength or number of de-stacking means 240 may be adapted in accordance without having to change the entire apparatus 200.
  • the denesting apparatus 200 of the present invention may be implemented in various industries such as food industry, transport industry, house hold appliance industry in denesting of any kind of product or group of products, of any shape, size or any variety of configurations, without limiting it to the packaging industry.
EP19219765.5A 2019-07-30 2019-12-27 Entstapelungsgerät Withdrawn EP3842369A1 (de)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP19219765.5A EP3842369A1 (de) 2019-12-27 2019-12-27 Entstapelungsgerät
CA3149135A CA3149135A1 (en) 2019-07-30 2020-07-29 Denesting apparatus
KR1020227006288A KR20220038468A (ko) 2019-07-30 2020-07-29 디네스팅 장치
MX2022001248A MX2022001248A (es) 2019-07-30 2020-07-29 Aparato desapilador.
CN202080068655.6A CN114450228A (zh) 2019-07-30 2020-07-29 解套叠设备
EP20745222.8A EP4003887A1 (de) 2019-07-30 2020-07-29 Entstapelungsgerät
BR112022001643A BR112022001643A2 (pt) 2019-07-30 2020-07-29 Aparato de separação
PCT/EP2020/071431 WO2021018979A1 (en) 2019-07-30 2020-07-29 Denesting apparatus
US17/631,270 US20220250862A1 (en) 2019-07-30 2020-07-29 Denesting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19219765.5A EP3842369A1 (de) 2019-12-27 2019-12-27 Entstapelungsgerät

Publications (1)

Publication Number Publication Date
EP3842369A1 true EP3842369A1 (de) 2021-06-30

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Application Number Title Priority Date Filing Date
EP19219765.5A Withdrawn EP3842369A1 (de) 2019-07-30 2019-12-27 Entstapelungsgerät

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EP (1) EP3842369A1 (de)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3401831A (en) 1966-05-11 1968-09-17 Phillips Petroleum Co Denester
JPS54128282U (de) * 1978-02-28 1979-09-06
JPS6277149U (de) * 1985-11-01 1987-05-18
US5254071A (en) 1990-07-20 1993-10-19 Societe Anonyme Etudes Services Automatismes Techniques Esatec Rotary feeder for the accurate placing of sheet elements on flat supports
EP1541508A1 (de) 2003-12-12 2005-06-15 Ferag AG Vorrichtung zum Abbauen eines Stapels von flächigen Gegenständen
WO2008015347A1 (fr) 2006-08-03 2008-02-07 Solystic Dispositif de dépilage avec un organe de soufflage escamotable
US20110229297A1 (en) 2010-03-18 2011-09-22 Axis Automation, Llc Tray denester with air nozzle separators
US20140056684A1 (en) 2012-08-27 2014-02-27 Christopher M. Sydorko Denesting apparatus and method
US20150139772A1 (en) * 2012-06-14 2015-05-21 Robert Bosch Gmbh Apparatus for transporting articles, in particular packaging means
DE202018103487U1 (de) * 2018-06-20 2018-08-23 Stock Maschinenbau Gmbh Vereinzelungsanlage von flächigen Bögen

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3401831A (en) 1966-05-11 1968-09-17 Phillips Petroleum Co Denester
JPS54128282U (de) * 1978-02-28 1979-09-06
JPS6277149U (de) * 1985-11-01 1987-05-18
US5254071A (en) 1990-07-20 1993-10-19 Societe Anonyme Etudes Services Automatismes Techniques Esatec Rotary feeder for the accurate placing of sheet elements on flat supports
EP1541508A1 (de) 2003-12-12 2005-06-15 Ferag AG Vorrichtung zum Abbauen eines Stapels von flächigen Gegenständen
WO2008015347A1 (fr) 2006-08-03 2008-02-07 Solystic Dispositif de dépilage avec un organe de soufflage escamotable
US20110229297A1 (en) 2010-03-18 2011-09-22 Axis Automation, Llc Tray denester with air nozzle separators
US20150139772A1 (en) * 2012-06-14 2015-05-21 Robert Bosch Gmbh Apparatus for transporting articles, in particular packaging means
US20140056684A1 (en) 2012-08-27 2014-02-27 Christopher M. Sydorko Denesting apparatus and method
DE202018103487U1 (de) * 2018-06-20 2018-08-23 Stock Maschinenbau Gmbh Vereinzelungsanlage von flächigen Bögen

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