EP0974517A1 - Machine de formation, remplissage et fermeture de sacs - Google Patents

Machine de formation, remplissage et fermeture de sacs Download PDF

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Publication number
EP0974517A1
EP0974517A1 EP99202331A EP99202331A EP0974517A1 EP 0974517 A1 EP0974517 A1 EP 0974517A1 EP 99202331 A EP99202331 A EP 99202331A EP 99202331 A EP99202331 A EP 99202331A EP 0974517 A1 EP0974517 A1 EP 0974517A1
Authority
EP
European Patent Office
Prior art keywords
bag
machine according
station
filling
machine
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Withdrawn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
EP99202331A
Other languages
German (de)
English (en)
Inventor
Teodoro Concetti
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.)
Concetti SpA
Original Assignee
Concetti SpA
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 Concetti SpA filed Critical Concetti SpA
Publication of EP0974517A1 publication Critical patent/EP0974517A1/fr
Withdrawn legal-status Critical Current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
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/13—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the preformed tubular webs being supplied in a flattened state

Definitions

  • the present invention relates to machine for filling, forming and sealing bags, comprising welding means for sealing the bottom and the mouth of the bags, arranged opposite the said filling station, as well as means for transporting the bottom of the bag from the forming station to said welding means, for initial sealing of the bottom itself.
  • Said sealing of the upper mouth of the bag is normally performed by means of hot-welding techniques performed by means of suitable apparatus which act directly on the two opposite edges of the bag so that the two respective internal surfaces come into contact and merge with each other.
  • EP-0,439,789 also discloses a more compact machine with a single station for welding the bottom and the mouth of the bag; this station, however, is arranged upstream of the filling station in the direction of feeding of the bag which, after it has been filled, must perform a return movement for sealing of the mouth, thus occupying the machine which is unable to fill at the same time the next bag; this results in an obvious and unacceptable increase in the dead time of the cycle and low productivity of the machine.
  • the technical problem which is posed, therefore, is that of providing an automatic machine for forming, filling and sealing bags, which is compact and simplified in terms of the component parts, but is such as to allow high average hourly production outputs with a reduction in the dead time of the cycle.
  • a machine for forming, filling and sealing bags comprising at least one station for forming the bag, at least one station for filling the bag and means for sealing the bottom and the mouth of the bag, arranged opposite the filling station, wherein means are provided for transporting the bottom of the bag from the forming station to said welding means, for initial sealing of the bottom itself.
  • a machine according to the invention comprises two workstations: respectively, F, for forming the bag 1 from tubular material 101 unwound from a reel 101a, and R, for filling the bag with material fed into it by means of a hopper 200.
  • the filling station R also has, arranged opposite it, means for initial sealing of the bottom 1b of the bag and final sealing of the mouth 1a thereof.
  • the forming station comprises a pair of rollers 102 for feeding the tubular material 101; the interaxial distance of said rollers is adjustable via corresponding means 102a, while the tubular material is kept taut by corresponding means 103 for tensioning and recovering the tubular material itself.
  • the rollers 102 have, arranged underneath them, the cutting means 105, closing of which, synchronized with the operating steps of the machine, causes the formation of the bag and the mouth of the latter.
  • the filling station comprises said hopper 200, the bottom mouth of which is provided with means for opening the discharge flanges 202 in a manner known per se and therefore only schematically shown in the Figures and not described in detail.
  • the said welding means S are also arranged opposite the filling station R, said means being per se conventional and represented by way of example as a pair of heating bars 311 extending in a direction transverse to the direction of feeding of the bag and integral with supporting and moving means schematically indicated by hinged levers 312 which are connected to an actuating cylinder 320. Said heating bars 311 are also associated with rolls of anti-adhesive material which is unwound in a manner known per se between the front surface of the bars 311 and the external surfaces of the edges of the bag 1, so that no mutual gluing occurs during welding.
  • the means for moving the bag from the forming station F to the filling station R and from the latter to the output U of the machine comprise a carriage 400 movable horizontally in both directions on rectilinear guides 401 and operation by means of connecting-rod and crank devices 402.
  • Said carriage is provided with grippers 403 for gripping the bag in the region of the mouth 1a of the latter and for transporting it to the hopper 200.
  • Operation of the carriage 440 which is known from the said EP-0,595,778 envisages that, during the translatory movement in the direction of feeding of the bag, the grippers 403 for retaining the mouth move towards each other symmetrically in a direction transverse to the direction of feeding of the bag so as to allow opening of the bag 1a performed via auxiliary means (Fig. 3) such as suction cups 404 and the like which are mounted on arms 404a which move towards/away from each other symmetrically with respect to the bag so as to cause the said opening of the mouth of the bag and allow entry, inside it, of the movable flanges 202 of the hopper 200.
  • auxiliary means Fig. 3
  • suction cups 404 and the like which are mounted on arms 404a which move towards/away from each other symmetrically with respect to the bag so as to cause the said opening of the mouth of the bag and allow entry, inside it, of the movable flanges 202 of the hopper 200.
  • the bag is always retained by the gripping means of the carriage 400, which, at the end of filling, move away again symmetrically in the direction transverse to the direction of feeding so as to close the mouth of the bag and prepare it for final sealing.
  • the devices for moving the bag 1 also comprise a substantially L-shaped element 500 which is arranged below the hopper 200 and with one end pivotably mounted on a fixed fulcrum 500a, which supports the bag during filling thereof.
  • the support 500 Upon operation of a cylinder 501, the support 500 is able to rotate from a substantially vertical position (Fig. 1) to a position inclined forwards for unloading the bag onto a conveyor belt 503 which transports the bag 1 to the outlet U.
  • the machine also comprise an arm 600 which is pivotably mounted on a fulcrum 601 fixed to the structure of the machine and provided at its free end 600a with gripping means 602 which are designed to close in the region of the bottom zone of the bag so as to transport it underneath the hopper 200 where the bottom itself is sealed by the welding means 300, the relative pivoting opening/closing movement of which is performed by means of a cylinder 320 and conventional transmission devices 312.
  • said gripping means consisting for example of grippers 602 can be opened/closed upon operation of associated programmable control and synchronization means which also control all the other operating steps and actuating movements of the machine.
  • the operating principle of the machine is as follows:
  • the time required for filling the bag and the subsequent removal which frees the welding means 300 is such, in fact, as to allow gripping of the bottom of the next bag being formed and the renewed rotation of the arm 600 so as to bring the bottom of the new bag to the welding point.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
EP99202331A 1998-07-24 1999-07-15 Machine de formation, remplissage et fermeture de sacs Withdrawn EP0974517A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1998MI001718A IT1301861B1 (it) 1998-07-24 1998-07-24 Macchina formatrice/riempitrice/sigillatrice di sacchi e simili dotatadi mezzi di trasporto del fondo del sacco all'unica stazione di
ITMI981718 1998-07-24

Publications (1)

Publication Number Publication Date
EP0974517A1 true EP0974517A1 (fr) 2000-01-26

Family

ID=11380511

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99202331A Withdrawn EP0974517A1 (fr) 1998-07-24 1999-07-15 Machine de formation, remplissage et fermeture de sacs

Country Status (2)

Country Link
EP (1) EP0974517A1 (fr)
IT (1) IT1301861B1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2459725A1 (de) * 1974-12-18 1976-07-01 Librawerk Pelz & Nagel Kg Vorrichtung zum beschicken einer beutel- und sackfuelleinrichtung
EP0036400A2 (fr) * 1980-03-18 1981-09-23 CF di CONCETTI TEODORO & GIUSEPPE s.n.c. Appareil pour la fabrication et le remplissage de sachets en continu
US4534158A (en) * 1983-05-31 1985-08-13 Wrapade Machine Company, Inc. Packaging machine
FR2676990A1 (fr) * 1991-05-29 1992-12-04 Garacci Patrice Procede et machine pour la mise en volume et le remplissage automatique de sacs plastiques a partir d'une gaine plastique.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2459725A1 (de) * 1974-12-18 1976-07-01 Librawerk Pelz & Nagel Kg Vorrichtung zum beschicken einer beutel- und sackfuelleinrichtung
EP0036400A2 (fr) * 1980-03-18 1981-09-23 CF di CONCETTI TEODORO & GIUSEPPE s.n.c. Appareil pour la fabrication et le remplissage de sachets en continu
US4534158A (en) * 1983-05-31 1985-08-13 Wrapade Machine Company, Inc. Packaging machine
FR2676990A1 (fr) * 1991-05-29 1992-12-04 Garacci Patrice Procede et machine pour la mise en volume et le remplissage automatique de sacs plastiques a partir d'une gaine plastique.

Also Published As

Publication number Publication date
ITMI981718A0 (it) 1998-07-24
IT1301861B1 (it) 2000-07-07
ITMI981718A1 (it) 2000-01-24

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