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WO1992007764A1 - Appareil servant a ouvrir et a fermer des sacs plats a bords colles pour en permettre le remplissage - Google Patents

Appareil servant a ouvrir et a fermer des sacs plats a bords colles pour en permettre le remplissage Download PDF

Info

Publication number
WO1992007764A1
WO1992007764A1 PCT/DK1991/000335 DK9100335W WO9207764A1 WO 1992007764 A1 WO1992007764 A1 WO 1992007764A1 DK 9100335 W DK9100335 W DK 9100335W WO 9207764 A1 WO9207764 A1 WO 9207764A1
Authority
WO
WIPO (PCT)
Prior art keywords
bag
web
filling
filling station
members
Prior art date
Application number
PCT/DK1991/000335
Other languages
English (en)
Inventor
Steen Buhl
Original Assignee
Thorsted Maskiner A/S
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 Thorsted Maskiner A/S filed Critical Thorsted Maskiner A/S
Priority to DE69115291T priority Critical patent/DE69115291T2/de
Priority to EP91919655A priority patent/EP0555321B1/fr
Publication of WO1992007764A1 publication Critical patent/WO1992007764A1/fr

Links

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
    • B65B43/267—Opening of bags interconnected in a web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/12—Feeding flexible bags or carton blanks in flat or collapsed state; Feeding flat bags connected to form a series or chain
    • B65B43/123—Feeding flat bags connected to form a series or chain

Definitions

  • the present invention relates to an apparatus for opening and closing laterally coherent, flat bag members for filling thereof, and of the type specified in the introductory clause of claim 1.
  • bag members as these may currently or in advance be prepared by folding of a sheet web and providing it with transverse welding- /separation lines extending from the closed bottom edge of the folded web up to an area somewhat below the top edge thereof.
  • the bag members thus formed may then be successively advanced to the said filling station simply by causing the coherent top edge portions to be ad ⁇ vanced, and in the filling station the bag members can be opened by bringing away from each other the holding means of the respective opposed top edge areas, which can be brought together again after the filling, where ⁇ after the filled bag members may be brought further to a sealing station, in which they are finally closed at their mouthing areas and are separated from the coherent web.
  • the hanging sheet web has been slidably suspended in opposite guiding rails and has been advanced there along by means of a traction station arranged downstream of the filling station.
  • the guiding rails can be round rods carryingly cooperating with channels provided along the opposed top edges of the web sides, or they may be con ⁇ stituted by respective twin rails exhibiting a longi ⁇ tudinal slot, along which the web sides can be carried by having at their top edges a thickening provided e.g. by an extrusion production of the web.
  • the opening and closing of the bag member mouth- ings in the filling station may take place fully auto ⁇ matically by the opposed guiding rails being arranged in a diverging manner in front of this station and in a converging manner after the station, such that the open ⁇ ing and the subsequent closing of the mouthing areas will take place as a simple function of the very advanc ⁇ ing of the web.
  • the bag member web is at first advanced through the filling station with the topmost edge area of the web located between the said conveying belts, whereafter the conveying through the sealing station is effected by an engagement with another and lower placed pair of con ⁇ veying belts with associated pressing means.
  • the top sealing is effected by welding together the opposed top edge areas as projecting upwardly from these belts, and in order for this sealing to be effective it will be required that the previously produced, transverse weld ⁇ ing/separation lines on the web should extend almost up to the top edge of the web.
  • a gripping chain is a chain type, in which each or every second chain link is provided with a lat ⁇ eral fitting carrying a spring biased holding pin, which is held against a holding member and has a projecting portion, which, in cooperation with outer control cam means, is operable to temporarily lift the holding pin off the holding member, whereby it is possible to cur ⁇ rently introduce a web edge to be held along an advanced chain run, forwardly to a position in which the web - or a remaining top edge portion thereof - can be pulled out of or released from its engagement with the gripping chain.
  • Fig. 1 is lateral view o.f a bag and filling machine according to the invention
  • Fig. 2 is a schematic top view thereof
  • Fig. 3 is an end view of a carrier chain used in the machine
  • Figs. 4 and 5 are top views of a preferred embodi ⁇ ment of the machine or apparatus according to the inven ⁇ tion.
  • the machine shown in Figs. 1 and 2 is primarily a filling machine for handling flat bag members 2 that are supplied in a coherent row to a filling station 4, whereafter the filled bags are closed and separated from the coherent row.
  • a pre ⁇ fabricated bag web 6 prepared with a closed bottom edge 8 and with closed side edges along transverse separation lines 10 extending from the bottom to somewhat beneath the top edge of the bag web, such that the bag members 2 will be coherent at the top edge of the web, or whether such a preparation of the web takes place wholly or partly in the machine unit itself.
  • the filling station 4 successively receives flat bag members that are closed along the bottom and the sides, but open in the top in a manner such that the single bag members can be opened for filling by way of the carrier or transportation means cooperating with the top edge area of the bag members being operable to carry out an opening of this area.
  • Fig. 1 it is proposed to use a flat sheet hose that is reeled off from a supply roll 12 and is cut open at the top by means of a knife 14, while at a place of the moving track towards the filling station 4 there is provided a working station 16, in which the separation lines 10 and the associated side closures are made, but it will be appreciated that the web 6 with the bag members 2 can be produced in several other and ele ⁇ mentary manners.
  • an advancing system 18, which in accordance with the invention and as shown in Fig. 2 comprises two opposite chain conveyors 20 arranged immediately next to and along each other.
  • Each of these conveyor chains is adapted to grip one of the opposed top edges of the advanced double layer web 6, such that both of these edges will be advanced in syn ⁇ chronism towards the filling station 4.
  • the bag members are required to be opened by way of the opposed top edges of the bag members 6 being moved away from each other, whereafter they shall be brought together for the final top closing of the bag members once these have been filled.
  • a permanent guid ⁇ ing system that will compulsorily bring the edges through the relevant outbulging parts of the paths of movement, but it will be an associated condition that those parts of the bag web that are located just above the separation lines 10, designated 22 in Fig. 1, have a vertical dimension allowing for the associated widening of the bag top, as this widening will be connected with a horizontal stretching of the areas 22.
  • the separation lines 10 cannot extend overly closely up to the top edge, whereby the effective fil ⁇ ling height of the single bag members will be corre ⁇ spondingly reduced.
  • this drawback may be remedied by arranging for the conveying path to be controllable so as to define a narrow path during the passage of the areas 22 through the filling station 4 and to assume the outbulging position only in the situations, where the successive bag members 2 have already been placed in the filling position, with the areas 22 located at either end thereof.
  • the means carrying the top edges of the bag sides are hereby brought to bulge out as shown in Fig. 2, this may take place without any special widening of the areas 22, whereby these areas may ex ⁇ hibit a minimal vertical dimension, i.e the effective filling height of the bag members may be relatively large and the bag web may be prepared in a simple manner.
  • the widened track portions 24 are retracted into the straight path, and the bag web is advanced one step for delivering the filled bag member from the filling station and feeding a new bag member thereto, still without problems with respect to the small vertical dimension of the areas 22, as these are not brought to move through the widened filling area.
  • a welding jaw or roller tool 26 produces a horizontal sealing line 28 between the upper ends of the separation lines 10, whereafter the top edge area of the bag web is cut be means of a vertically arranged knife 30, such that the filled bag members will successively be separated from the bag web for delivery as single units, e.g. for further conveying on a conveyor 32, Fig. 1.
  • This con ⁇ veyor may extend to underneath the filling station so as to support the loaded bag members all the way to their delivery.
  • the apparatus shown may be provided with means for cutting off the upper portions of the bag member sides just above the upper sealing line 28, but such a cutting off may be found unnecessary, because the upwardly projecting part of the bag web is not very high.
  • special gripping chains 20 are used for the conveying of the bag web, these chains being provided with means for releasably clamping the top edge areas of the sheets forming the opposed sides of the bag web 6, i.e. without these top edge areas having to be provided with any price-raising chan ⁇ nel or rib portion.
  • a gripping chain of a known design is illustrated in Fig. 3. It comprises chain links 34 that can be advanced in a guiding and carrying rail 36, each or some of the links carrying a gripping device comprising a plate bracket 38, the opposed flanges of which have holes for a through-going clamp pawl 40 shaped as or from a plate strip and biased to ⁇ wards the left by means of a spring 42.
  • the spring will hold the clamp pawl in a normal position, in which a clamp nose 44 on the pawl is held against a flange portion 47 BAOof the bracket 38.
  • the clamp jaw has a protruding end portion 46 which may cooperate with a cam surface for being pressed towards the right, thus bringing the clamp pawl into a released position as shown by dotted lines.
  • the two applied chains 20 may be controlled so as to grip the top edges of the opposed sheet webs as these are fed to the machine, preferably from the supply reel, while also the optionally cut off top edge strip at the delivery end of the machine may be brought to leave the machine successively, merely by a brief re ⁇ leasing of the clamp pawls 40 at the rear sprocket wheels of the chains.
  • the chains should be able to be brought away from each other upon a bag member being fed to the station, and this will only be a question of arranging the guiding rails 36 at this place in such a manner that they can be pulled out, through small bendings or in a flexible manner, to the outbulging configuration as shown at 24 in Fig. 2, e.g. in being pulled out by means of one or more push or pull cylinders.
  • Figs. 4 and 5 illustrate a preferred design of the means, by which the opposed gripping chains at the fil ⁇ ling station can be moved away from each other and be rejoined prior to the stepwise further advancing of the bag web.
  • These means may simply consist of pivotally arranged guiding rail sections 50 which in a suitable co-controlled manner are pivotal between the positions shown in Figs. 4 and 5, by means of a suitable actuator system such as one or more working cylinders 52.
  • a suitable actuator system such as one or more working cylinders 52.
  • the advantage of the invention is that the bag members can be brought to and from the filling area and opened widely therein, all in a very simple manner and although the bag members are only very little openable in the areas just above the separation lines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Basic Packing Technique (AREA)

Abstract

Selon un procédé connu, on peut remplir une succession de sacs plats qui se présentent à un poste de remplissage sous forme d'une bande continue. Un dispositif est prévu pour faire avancer les parties marginales supérieures et opposées des sacs et pour écarter ces parties les unes des autres afin d'ouvrir les sacs. Lors de leur entrée dans le poste de remplissage, et de leur sortie de celui-ci, les bords latéraux des sacs sont fermés mais les fermetures ne s'étendent pas jusqu'au bord supérieur. On a prévu des chaînes de serrage parallèles (20) aptes à faire passer la bande de sacs fermés dans le poste de remplissage (4). Lorsque les chaînes s'arrêtent lors de l'introduction d'un sac (2) dans ledit poste, elles s'écartent l'une de l'autre pour permettre l'ouverture du sac. Dès que le sac est plein, les chaînes se rapprochent l'une de l'autre et emportent le sac pour permettre l'introduction dans le poste de remplissage du sac suivant. Ainsi, les fermetures latérales peuvent s'étendre presque jusqu'au bord supérieur et la bande de sacs peut être serrée en toute sécurité sans que son bord supérieur ne doive être épaissi ni plié. L'ouverture et la fermeture des sacs dans le poste de remplissage peut s'effectuer au moyen d'un système de commande simplifié (59, 52).
PCT/DK1991/000335 1990-11-06 1991-11-06 Appareil servant a ouvrir et a fermer des sacs plats a bords colles pour en permettre le remplissage WO1992007764A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE69115291T DE69115291T2 (de) 1990-11-06 1991-11-06 Vorrichtung zum öffnen und schliessen seitlich verbundener bautelwände zum zwecke des befüllens.
EP91919655A EP0555321B1 (fr) 1990-11-06 1991-11-06 Appareil pour ouvrir et fermer des sacs plats a bords lateraux relies pour en permettre le remplissage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK265790A DK265790D0 (da) 1990-11-06 1990-11-06 Fremgangsmaade og apparat til fyldning af poseemner tilfoert i en kontinuerlig bane
DK2657/90 1990-11-06

Publications (1)

Publication Number Publication Date
WO1992007764A1 true WO1992007764A1 (fr) 1992-05-14

Family

ID=8114295

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1991/000335 WO1992007764A1 (fr) 1990-11-06 1991-11-06 Appareil servant a ouvrir et a fermer des sacs plats a bords colles pour en permettre le remplissage

Country Status (6)

Country Link
EP (1) EP0555321B1 (fr)
AT (1) ATE131124T1 (fr)
AU (1) AU8872491A (fr)
DE (1) DE69115291T2 (fr)
DK (2) DK265790D0 (fr)
WO (1) WO1992007764A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0630817A1 (fr) * 1993-06-22 1994-12-28 Cord Hinrich Schmidt Installation pour remplir et fermer un moyen d'emballage
ES2068069A2 (es) * 1992-03-03 1995-04-01 Sorma Iberica S A Procedimiento para el llenado de saquitos de malla y maquinaria para la practica del propio procedimiento.
WO2002083506A1 (fr) * 2001-04-06 2002-10-24 Joker System Ab Appareil servant a ouvrir et fermer des emballages
US20140116010A1 (en) * 2012-10-26 2014-05-01 Advanced Poly-Packaging, Inc. High-Capacity, High-Speed Bag Loading and Sealing System
CN106458372A (zh) * 2014-06-30 2017-02-22 舒尔技术股份公司 用于将物品、液体或松散材料包装于膜袋中的方法和设备，以及袋网
US10807778B2 (en) 2014-06-30 2020-10-20 Schur Technology A/S Bag web and method for packing a product in film bags by using such a bag web

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK174262B1 (da) 1998-04-21 2002-10-21 Schur Packaging Systems As Fremgangsmåde og anlæg til pakning af emner i folieposer, apparat til udøvelse af fremgangsmåden samt emballageemne til anvendelse ved fremgangsmåden i apparatet
DK200101481A (da) * 2001-10-08 2003-04-09 Schur Packaging Systems As Posedorn

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2283825A1 (fr) * 1974-09-06 1976-04-02 Emsteph Dispositif pour confectionner des emballages a partir d'une bande en matiere plastique
US4169345A (en) * 1976-12-22 1979-10-02 Lockwood International B.V. Device for opening out the filling apertures of bags
DE3010181C2 (de) * 1980-03-17 1982-05-13 dostro-Kunststoffwerk GmbH, 4543 Lienen Vorrichtung zum Aufspreizen eines Folienbandes
US4514962A (en) * 1982-12-16 1985-05-07 Minigrip, Inc. Method and apparatus for filling reclosable bags
EP0249868A2 (fr) * 1986-06-16 1987-12-23 Minigrip Europe Gmbh Procédé et machine de remplissage de sacs à bandes de fermeture élastiques complémentaires
US4945714A (en) * 1989-11-14 1990-08-07 Package Machinery Company, Bodolay/Pratt Division Form, fill, seal and separate packaging machine for reclosable containers

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2283825A1 (fr) * 1974-09-06 1976-04-02 Emsteph Dispositif pour confectionner des emballages a partir d'une bande en matiere plastique
US4169345A (en) * 1976-12-22 1979-10-02 Lockwood International B.V. Device for opening out the filling apertures of bags
DE3010181C2 (de) * 1980-03-17 1982-05-13 dostro-Kunststoffwerk GmbH, 4543 Lienen Vorrichtung zum Aufspreizen eines Folienbandes
US4514962A (en) * 1982-12-16 1985-05-07 Minigrip, Inc. Method and apparatus for filling reclosable bags
EP0249868A2 (fr) * 1986-06-16 1987-12-23 Minigrip Europe Gmbh Procédé et machine de remplissage de sacs à bandes de fermeture élastiques complémentaires
US4945714A (en) * 1989-11-14 1990-08-07 Package Machinery Company, Bodolay/Pratt Division Form, fill, seal and separate packaging machine for reclosable containers

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2068069A2 (es) * 1992-03-03 1995-04-01 Sorma Iberica S A Procedimiento para el llenado de saquitos de malla y maquinaria para la practica del propio procedimiento.
EP0630817A1 (fr) * 1993-06-22 1994-12-28 Cord Hinrich Schmidt Installation pour remplir et fermer un moyen d'emballage
WO2002083506A1 (fr) * 2001-04-06 2002-10-24 Joker System Ab Appareil servant a ouvrir et fermer des emballages
US20140116010A1 (en) * 2012-10-26 2014-05-01 Advanced Poly-Packaging, Inc. High-Capacity, High-Speed Bag Loading and Sealing System
CN106458372A (zh) * 2014-06-30 2017-02-22 舒尔技术股份公司 用于将物品、液体或松散材料包装于膜袋中的方法和设备，以及袋网
CN106458372B (zh) * 2014-06-30 2019-06-04 舒尔技术股份公司 用于将物品、液体或松散材料包装于膜袋中的方法和设备，以及袋网
US10807778B2 (en) 2014-06-30 2020-10-20 Schur Technology A/S Bag web and method for packing a product in film bags by using such a bag web

Also Published As

Publication number Publication date
DK0555321T3 (da) 1996-04-22
EP0555321B1 (fr) 1995-12-06
DE69115291T2 (de) 1996-07-18
ATE131124T1 (de) 1995-12-15
DK265790D0 (da) 1990-11-06
AU8872491A (en) 1992-05-26
DE69115291D1 (de) 1996-01-18
EP0555321A1 (fr) 1993-08-18

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