EP0548463B1 - Dispositif pour ouvrir des sacs et pour les enfiler sur une tuyère de remplissage - Google Patents

Dispositif pour ouvrir des sacs et pour les enfiler sur une tuyère de remplissage Download PDF

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Publication number
EP0548463B1
EP0548463B1 EP92113963A EP92113963A EP0548463B1 EP 0548463 B1 EP0548463 B1 EP 0548463B1 EP 92113963 A EP92113963 A EP 92113963A EP 92113963 A EP92113963 A EP 92113963A EP 0548463 B1 EP0548463 B1 EP 0548463B1
Authority
EP
European Patent Office
Prior art keywords
bag
opening
swivel
sack
aligning table
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.)
Expired - Lifetime
Application number
EP92113963A
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German (de)
English (en)
Other versions
EP0548463A1 (fr
Inventor
Karl-Wilhelm Kader
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.)
CHRONOS HOLDING LTD
Original Assignee
Chronos Richardson GmbH
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 Chronos Richardson GmbH filed Critical Chronos Richardson GmbH
Publication of EP0548463A1 publication Critical patent/EP0548463A1/fr
Application granted granted Critical
Publication of EP0548463B1 publication Critical patent/EP0548463B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/26—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks
    • B65B43/30—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks by grippers engaging opposed walls, e.g. suction-operated

Definitions

  • the invention relates to a device for spreading and placing sacks on a filler neck, in particular gusseted sacks, which have occasionally been fed to an alignment table with the sack opening facing forwards, with the features specified in the independent claim.
  • a device of the type mentioned is known from DE-A-38 40 646. In this device, sacks are first pulled backwards out of a sack magazine, the closed sack bottom being at the front in the conveying direction. The sacks are then drawn onto an alignment table with the sack opening facing forward, with the conveying direction reversed. The system parts required for this can also be used in an unchanged manner in the device according to the subject matter of the present invention.
  • the alignment table is already part of the device according to the invention, which is firmly connected to the means for spreading and attaching the bags.
  • the device for spreading and attaching for example in the form of the automatic trailer for open sacks OMPB II from Chronos Richardson GmbH, in which the bag opening by first suction cups, which can be moved against the bottom wall of the bag, and second suction cups, which can be moved against the upper wall of the bag, and each are arranged in the region of the front edge of the sack, can be subjected to negative pressure and can be removed from the sack, so that the sack opening expands.
  • Means are also provided, which are designed as spreading arms, which move into the bag opening and move away from each other there, so that the bag opening is spread open completely.
  • the sack is gripped and held by this spreading alone.
  • the spreader arms By pivoting the spreader arms about a horizontal axis lying above the alignment table, the sack is now pushed onto a sack spout for filling and taken over by so-called sack clamps.
  • the spreading arms move into a waiting position, in which they remain until the attached sack is filled and released from the sack spout by releasing it through the sack clamps.
  • the push-on device of the type described above has the disadvantage that in the area of the bag edges there is a complete opening of the bag cross-section, so that after the bag has been filled, a clearly defined side fold in the area of the bag opening cannot be restored.
  • This is particularly disadvantageous when closing real gusseted bags, but also has an adverse effect when closing simple flat bags without multiple gussets.
  • the filled sack had to be folded back, which means considerable effort.
  • Another disadvantage is that picking up another sack by the spreader arms can only be initiated when the previous sack is filled and dropped from the sack spout.
  • the device reproduced here is suitable, on the one hand, to prevent the lateral sack folds from spreading open, in particular in the case of side gusseted sacks, but at the same time also to prevent the spread-open sack opening from collapsing even with a rapid plug-on movement.
  • this is during the entire push-on process, ie. H. ensured until the sack is clamped on the sack nozzle.
  • the spreading blades synchronously follow the swiveling movement of the bag grippers from the alignment table to the bag nozzle.
  • the advantageous and favorable effect here is that the spreading vanes can only be removed in a position on the bag opening in which the bag opening has already been moved over the bag neck and that the spreading vanes, with the bag still clamped, returned to their starting position with the pivoting means can be swung back at the alignment table to pick up the next sack.
  • the pivoting means for the expansion blades and the bag grippers are identical, so that the corresponding drive means only have to be present once, so that overall a synchronous movement is ensured as long as the actuating means for the shorter pivoting arms are not actuated.
  • the spreading vanes or wedges are angled by approximately 90 ° with respect to the shorter swivel arms, which in turn are angled in the same sense again by approximately 30 to 50 °.
  • the ends of the shorter swivel arms are preferably located in an approximately horizontal swivel movement tangential to the plane of the alignment table when they are moved into the spread-out bag opening.
  • the alignment table has an end stop edge for the front sack edge, which lies in the swiveling path of the spreading vanes and can be folded down or displaced downwards. This gives the possibility to push the sack against the Align the stop edge exactly, then grasp it laterally with the bag grippers so that it is fixed in its position. Then the stop edge can be folded away and the sack can be spread with the suction means. The spreading vanes are then retracted in a final movement. This can be followed by a common swiveling movement of the bag grippers and the spreading vanes in a circular arc towards the bag nozzle.
  • the alignment table can furthermore have lateral adjustable guide edges.
  • Figure 1 shows a machine frame 1 in longitudinal section, in front of which, roughly indicated, a filling device 2 and a transversely passing conveyor track 3 can be seen.
  • A1 the axis of a sack nozzle is not shown in detail in a first position in which the sack can be attached.
  • This axis is tangent to the arc B of expanding blades 4 and bag grippers 10 to be described in more detail when moving the first pivoting means about a first pivot axis X 1.
  • the axis of the bag neck is shown in a pivoted back into the vertical position, which is centrally and vertically above the conveyor track 3.
  • A3 another conceivable position of a vertical non-pivoting bag neck is displayed, which would require a different positioning of the conveyor track 3.
  • the spreading vanes 4 are still on a circular path, not shown in detail, but which is recognizable by its two end positions, in turn movable about a second pivot axis X 2 relative to the pivoting means movable about the axis X 1.
  • the spreading vanes 4 are directly attached to angled, shorter swivel arms 5, which can be actuated by means of actuating cylinders 6.
  • the first-mentioned pivoting means comprise pivoting arms 7 and adjusting levers 8, which can be acted upon by adjusting cylinders 9 arranged on the frame 1.
  • bag grippers 10 with claw pairs are arranged which lie approximately in the plane of an alignment table 11 when the swivel arms 7 have the position shown.
  • the alignment table is closed at the front by a stop flap 12 against which a supplied sack can strike for alignment.
  • the flap 12 can be folded away from the path of the expansion blades 4 into the solid, approximately horizontal position by means of a pivot lever 13 and an actuating cylinder 14.
  • lower suction means 15 are provided, which can be approximated to the sack level by means of levers and actuating cylinders 16, and upper suction means 17, which can be lowered onto the sack level via a swivel arm 18 and upper actuating cylinder 19.
  • upper suction means 17 which can be lowered onto the sack level via a swivel arm 18 and upper actuating cylinder 19.
  • the movement can be reversed again and returned to the position shown, as a result of which the sack opening of an overlying sack opens.
  • the feeding of a sack onto the alignment table is essentially effected by a belt loop 21 which can be driven by a drive motor 20 with a belt drive.
  • a bag feed arrangement 22 Behind the alignment table is a bag feed arrangement 22, the front drive roller 23 of which can be driven in both directions and which can be pivoted overall by means of an actuating cylinder 24 between the position shown in broken lines and the position shown in broken lines.
  • a single sack In the lower position shown in dashed lines, a single sack can be removed from the sack magazine 25 by means of the sack feed by lowering suction means 26 onto the sack stack (not shown), applying a vacuum and lifting it off again.
  • a swivel arm 27 is provided above the sack magazine, which can execute the specified movements by means of a lifting cylinder 28.
  • the suction means 26 are longitudinally displaceable, so that in the case of ancestors in the position of the suction means shown in the extended position, the front sack bottom can already be grasped and drawn in by the feed roller 23 of the feed arrangement 22. Then the feed arrangement 22 is brought into the upper position shown in solid lines and the drive direction is reversed.
  • Swivel arms 37 are also provided in pairs, which cover the cylinder 6 in the side view. These swivel arms 37 are also connected in a rotationally fixed manner to the rotary beam 31. There is no other connection between them.
  • further actuating cylinders 38 are mounted in journals 39, which are used to actuate the pair of bag clamps 10.
  • These each include pairs of claws 40, which are pivotable on pivots 41 about parallel axes of rotation X3, X4. Only one of the pins 41 can be driven directly via a lever 42. The pivot pins are in engagement with one another via toothings 44, so that they are driven in opposite directions by the actuating cylinders 38. As a result, the claws 40 can be pivoted into the closed position shown in dashed lines. With dashed lines, the sack S is shown here in particular as a side-gusset sack into which the expanding blades are inserted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Making Paper Articles (AREA)

Claims (6)

  1. Dispositif pour ouvrir et enfiler des sacs sur un manchon de remplissage, en particulier des sacs à plis latéraux, qui ont été amenés séparément à une table de redressement (11) avec l'ouverture du sac situé vers l'avant, le dispositif' comprenant :
    au moins des premiers organes d'aspiration (15) montés sur la table de redressement, qui sont déplaçables dans la région de l'ouverture du sac contre la paroi du sac située au-dessous,
    au moins des seconds organes d'aspiration (17) montés sur la table de redressement, qui sont déplaçables contre la paroi du sac située au-dessous,
    et les deux organes d'aspiration (15, 17) peuvent être éloignés les uns des autres en étant alimentés par une dépression,
    et comprenant une paire de pales d'écartement (4) susceptibles d'être introduites dans l'ouverture du sac au voisinage des plis latéraux, lesdites pales étant fixées à des premiers organes de basculement (7) et étant capables de basculer autour d'un axe de basculement X₁ horizontal situé au-dessus de la table de redressement (11),
    caractérisé en ce qu'il est prévu une paire d'éléments de saisie de sac (10) avec des paires de griffes (40) capables de basculer autour d'axes de rotation X₃, X₄ parallèles au plan de la table de redressement, et grâce à ceci susceptibles d'être ouvertes et fermées, et lesdites griffes étant agencées de telle façon qu'elles saisissent respectivement les deux plis latéraux dans la région de l'ouverture du sac,
    en ce qu'il est prévu des organes de basculement (37) pour les éléments de saisie de sac (10), qui sont susceptibles de basculer autour du même axe horizontal X₁, situé au-dessus de la table de redressement (11), que les premiers organes de basculement pour les pales d'écartement, et en ce que les pales d'écartement (4) sont agencées de façon à pouvoir basculer autour d'un autre axe de basculement horizontal X₂, parallèle à l'axe de basculement X₁ mentionné en premier lieu, sur des bras de basculement plus courts et sur un rayon plus faible vis-à-vis des premiers organes de basculement (7) susceptibles de basculer de leur côté.
  2. Appareil selon la revendication 1 caractérisé en ce que les organes de basculement (7, 37) pour les pales d'écartement (4) et pour les éléments de saisie de sac (10) sont reliés les uns aux autres et sont reliés à des moyens d'entraînement communs (8, 9).
  3. Appareil selon l'une ou l'autre des revendications 1 et 2, caractérisé en ce que les pales d'écartement (4) sont coudées d'environ 90° par rapport aux bras de basculement courts (5), lesquels sont de leur côté à nouveau coudés dans le même sens d'environ 30 à 50°.
  4. Appareil selon l'une des revendications 1 à 3 caractérisé en ce que les organes de basculement (3, 37) pour les pales d'écartement (4) et les éléments de saisie de sac (10) sont agencés fixement sur une barre rotative commune (31).
  5. Appareil selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la table de redressement (11) comporte une barrette de butée finale (12), qui est située dans le trajet de basculement des pales d'écartement (4) et qui peut être pivotée ou déplacée vers le bas hors de ce trajet.
  6. Appareil selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la table de redressement (11) comporte des arêtes de butée latérales réglables.
EP92113963A 1991-12-14 1992-08-17 Dispositif pour ouvrir des sacs et pour les enfiler sur une tuyère de remplissage Expired - Lifetime EP0548463B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4141253A DE4141253A1 (de) 1991-12-14 1991-12-14 Vorrichtung zum aufspreizen und aufstecken von saecken
DE4141253 1991-12-14

Publications (2)

Publication Number Publication Date
EP0548463A1 EP0548463A1 (fr) 1993-06-30
EP0548463B1 true EP0548463B1 (fr) 1995-10-25

Family

ID=6447042

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92113963A Expired - Lifetime EP0548463B1 (fr) 1991-12-14 1992-08-17 Dispositif pour ouvrir des sacs et pour les enfiler sur une tuyère de remplissage

Country Status (5)

Country Link
US (1) US5305579A (fr)
EP (1) EP0548463B1 (fr)
AT (1) ATE129473T1 (fr)
CA (1) CA2085332C (fr)
DE (2) DE4141253A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5878553A (en) * 1995-10-11 1999-03-09 Chronos Richardson Gmbh Method and device for the spreading and fitting of empty sacks and for grasping and stacking filled sacks and for conveying them into a closure device
DE19537792C1 (de) * 1995-10-11 1997-04-10 Chronos Richardson Gmbh Vorrichtung zum Aufspreizen und Aufstecken von Säcken
DE19604718C1 (de) * 1996-02-09 1997-09-04 Chronos Richardson Gmbh Verfahren und Vorrichtung zum Greifen, Aufspreizen und Aufstecken von Kunststoffsäcken
US6023637A (en) * 1997-03-31 2000-02-08 Liu; Zhong Qi Method and apparatus for thermal radiation imaging
DE19740851A1 (de) * 1997-09-17 1999-03-18 Chronos Richardson Gmbh Vorrichtung zum Vereinzeln von Säcken
DE19926525C2 (de) * 1999-06-10 2001-10-25 Chronos Holding Ltd Verfahren und Vorrichtung zum Aufspreizen und Greifen von Seitenfaltensäcken
CN103204270B (zh) * 2013-04-12 2016-05-04 安徽永成电子机械技术有限公司 一种带夹持装置的抓袋定位机构
CN103342175A (zh) * 2013-07-27 2013-10-09 枣庄市三维技术有限公司 粉料自动套袋机械手
ES2688539T3 (es) * 2016-01-28 2018-11-05 Girnet Internacional, S.L. Dispositivo y procedimiento para auxiliar en la operación de llenado y cierre de un envase y estación de llenado y cierre de un envase en una máquina de envasado que comprende dicho dispositivo
CN109956070A (zh) * 2017-12-23 2019-07-02 天津双合盛自行车有限公司 一种空气压缩机配件自动包装设备
IT201900000046A1 (it) * 2019-01-03 2020-07-03 B & B Di Borsoi Michele Apparato per la manipolazione di involucri a sacchetto
CN110116830A (zh) * 2019-05-21 2019-08-13 广东大市智能装备有限公司 一种智能封装码垛机
CN114619470A (zh) * 2022-02-24 2022-06-14 广东省现代农业装备研究所 一种机械爪

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT995630B (it) * 1973-10-05 1975-11-20 Buzzi R Macchina per riempire e cucire automaticamente sacchi
US4078358A (en) * 1976-08-31 1978-03-14 National Distillers And Chemical Corporation Bag-hanging and bag-filling machines adapted for synchronous and independent operation and method of using same
US4137958A (en) * 1976-11-15 1979-02-06 Golby Bag Company, Inc. Polypropylene bag for use in an automatic filling process
US4182094A (en) * 1978-03-15 1980-01-08 Bemis Company, Inc. Bag opening and filling apparatus
DE2821273C2 (de) * 1978-05-16 1985-07-25 Windmöller & Hölscher, 4540 Lengerich Vorrichtung zum Anhängen von Großsäcken an den Fülltrichter einer Sackfüllvorrichtung
DE2950822C2 (de) * 1979-12-17 1985-09-26 Haver & Boecker, 4740 Oelde Vorrichtung zum Öffnen und Anlegen eines vorgefertigten, oben offenen Sackes an den Füllstutzen einer Füllmaschine
US4345629A (en) * 1981-01-26 1982-08-24 Inglett & Company, Inc. Automatic bag hanger
DE3319901A1 (de) * 1983-06-01 1984-12-06 Haver & Boecker, 4740 Oelde Vorrichtung zum oeffnen und zur uebergabe von oben offenen saecken an einen fuellstutzen
US4545184A (en) * 1983-06-03 1985-10-08 Shigeo Akiyama Apparatus for supplying bags of pliable or easily flexible nature
US4840016A (en) * 1987-05-20 1989-06-20 Pomona Service & Supply Co., Inc. Paper bag feeder for bag-filling operations and process
AT404117B (de) * 1988-12-02 1998-08-25 Binder Co Ag Einrichtung zum zuführen eines vereinzelten sackes
DE3840646A1 (de) * 1988-12-02 1990-06-07 Chronos Richardson Gmbh Verfahren zum vereinzeln und zufuehren von saecken

Also Published As

Publication number Publication date
EP0548463A1 (fr) 1993-06-30
ATE129473T1 (de) 1995-11-15
DE59204135D1 (de) 1995-11-30
US5305579A (en) 1994-04-26
CA2085332C (fr) 1999-09-07
CA2085332A1 (fr) 1993-06-15
DE4141253A1 (de) 1993-06-17

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