WO2003075731A1 - Device and method for simultaneously separating and sealing a tube shaped web - Google Patents

Device and method for simultaneously separating and sealing a tube shaped web Download PDF

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Publication number
WO2003075731A1
WO2003075731A1 PCT/SE2003/000316 SE0300316W WO03075731A1 WO 2003075731 A1 WO2003075731 A1 WO 2003075731A1 SE 0300316 W SE0300316 W SE 0300316W WO 03075731 A1 WO03075731 A1 WO 03075731A1
Authority
WO
WIPO (PCT)
Prior art keywords
edge
sealing
collecting container
bag
tube
Prior art date
Application number
PCT/SE2003/000316
Other languages
French (fr)
Inventor
Göran Sjöberg
Fredrik Bergling
Original Assignee
Aktiebolaget Electrolux
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 Aktiebolaget Electrolux filed Critical Aktiebolaget Electrolux
Priority to AU2003206582A priority Critical patent/AU2003206582A1/en
Publication of WO2003075731A1 publication Critical patent/WO2003075731A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/14—Bags or the like; Rigid filtering receptacles; Attachment of, or closures for, bags or receptacles
    • A47L9/1481—Means for removing bags in suction cleaners, e.g. ejecting means; Means for exchanging bags
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/106—Dust removal
    • A47L9/108—Dust compression means
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/14—Bags or the like; Rigid filtering receptacles; Attachment of, or closures for, bags or receptacles
    • A47L9/1418—Impermeable dust collecting bags
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1683—Dust collecting chambers; Dust collecting receptacles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/221—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip
    • B29C65/224—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip being a resistive ribbon, a resistive band or a resistive strip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/221—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip
    • B29C65/226—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip characterised by the cross-section of said heated wire, resistive ribbon, resistive band or resistive strip, e.g. being triangular
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/228—Heated wire resistive ribbon, resistive band or resistive strip characterised by the means for electrically connecting the ends of said heated wire, resistive ribbon, resistive band or resistive strip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/743—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/004—Preventing sticking together, e.g. of some areas of the parts to be joined
    • B29C66/0042—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined
    • B29C66/0044—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined using a separating sheet, e.g. fixed on the joining tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8122—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81415—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
    • B29C66/81417—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled being V-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81457—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a block or layer of deformable material, e.g. sponge, foam, rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8324—Joining or pressing tools pivoting around one axis
    • B29C66/83241—Joining or pressing tools pivoting around one axis cooperating pivoting tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/849—Packaging machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91411—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the parts to be joined, e.g. the joining process taking the temperature of the parts to be joined into account
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • B29C66/91651—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux by controlling or regulating the heat generated by Joule heating or induction heating
    • B29C66/91655—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux by controlling or regulating the heat generated by Joule heating or induction heating by controlling or regulating the current intensity
    • 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
    • B65B9/15—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 stored on filling nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints

Definitions

  • This invention relates to a device and a mehod for simultaneously separating and sealing a tube shaped web or the like of thermoplastic material.
  • the invention is preferably used for vacuum cleaners in order to seal and separate a plastic bag from a tube shaped web arranged in the vacuum cleaner but the device might also be used in other connections where it is desirable to seal and separate plastic bags from such webs.
  • Vacuum cleaners in which the particles are separated by means of cyclonic action are previously known, see for instance US 4463748. In such vacuum cleaners conventional dust bags in which the particles are separated by mechanical filtration are not used.
  • Cyclonic vacuum cleaners are instead provided with a container to which the particles are successively distributed when the air/particle flow whirls around in a cylindrical separation chamber. The particles are by means of the centrifugal forces thrown towards the periphery of the chamber where the inlet of the container is placed .
  • the collecting container encloses a bag, for instance a plastic bag, in which the particles are collected.
  • a bag for instance a plastic bag
  • the collecting container encloses a bag, for instance a plastic bag, in which the particles are collected.
  • the purpose of this invention is to achieve an improved arrangement for a bag changing system for so called cyclone vacuum cleaners.
  • the bag in which the dust is collected is completely sealed when the bag is changed without the content of the bag being exposed to the surrounding atmosphere.
  • a hygienic handling of the dust bag is achieved at the same time as a new bag is applied in the container enclosing the dust bag.
  • Fig. 1 schematically shows a vertical section through a part of the cyclone vacuum cleaner
  • Fig. 2 is a section on the line II-II in Fig. 1
  • Fig. 3 is an enlarged vertical section of the lower part of Fig. 1.
  • the vacuum cleaner comprises a cyclone chamber 10 that is limited by a cylindrical side wall 11 and a first and a second end wall 12 and 13 resp.
  • the cyclone chamber preferably has a tangentially directed inlet 14 that is connected to a nozzle or the like, not shown, through which dust laden air flows into the cyclone chamber.
  • the cyclone chamber 10 is also provided with a clean air outlet 15 continuing into a passage 16 connected to a vacuum source, not shown, such as an electrically driven fan unit.
  • the end part of the passage 16 is coaxial to the cyclone chamber and extends somewhat into the chamber from the centre of the first end wall 12.
  • the cyclone chamber also has a particle outlet 17 which is placed at the periphery and arranged close to the second end wall 13.
  • the particle outlet 17 continues into a cylindrical tube part 18 that is parallel to the cyclone chamber 10 and is closed at one of its ends by means of a wall part 19 whereas its second free end 20 extends into a collecting container 21 surrounding the tupe part 18.
  • the tube part 18 encloses a screw conveyor 22 that is driven by an electric motor 23 via a shaft 24 extending through a wall part 19. The current or power demand of the electric motor is sensed and in a suitable way influences the electric circuit of the vacuum cleaner.
  • the tube part is also provided with an axially extending ridge 25 extending between the particle outlet 17 and the free end 20 of the tube part 18.
  • the screw conveyor 22 that preferably is made of plastic is flexible in the radial direction and is shaped such that it has an outer diameter which is considerably less than the inner diameter of the tube part 18 whereby the periphery of the screw conveyor has a comparatively large play with respect to the surrounding tube wall and also a certain play with respect to the ridge 25.
  • the collecting container 21 comprises two tube halves 26 each having a first and second end wall 27,28 the tube halves each being supported by a hinge
  • the tube halves 26 can thus be turned from and towards one another in order to admit insertion and removal of a cassette
  • the cassette 30 has two co-axial, sleeve shaped parts 32 and 33 having different diameters the parts at one of their ends being connected to one another by means of an end wall 34 whereby an annular chamber is created between the sleeve shaped parts in which the folded tube is placed. Also at the other end of the sleeves there is an end wall 35 this being shaped such that a circular slot 36 is created through which the tube is pulled out in order to form a bag 37 in the collecting container 21. Between the cassette 30 and the tube part 18 there is an annular sealing 38 such that the inside of the bag is sealed from the space 39 which exists outside the bag. The last mentioned space also via a conduit 40 is connected to the passage 16.
  • the tube halves 26 that together form the collecting container 21 comprises a sealing and separating device 41 that is placed in the parting plane between the end walls 28.
  • the last mentioned device preferably comprises a heat creating means that when the bag is changed forms a weld joint 42 on a new bag 37 at the same time as a weld joint 43 is created that seals the opening of a bag 37a that has been used and which also separates the bags 37 and 37a from one another.
  • the sealing and separating device comprises an elongated edge 44, an ridge, a thread shaped means or the like applied on one of the opposite edges of the end walls 28 and a corresponding dolly 45 on the edge of the opposite end wall.
  • the edge 44 is covered by means of a teflon layer 46 and close to the tip of the edge between the end wall and the teflon layer a heat creating, high resistive element 47 is arranged.
  • the dolly 45 comprises a comparatively soft edge portion 48, for instance foamed plastic, arranged at the other end wall the edge portion being covered by a teflon layer 49.
  • the heat creating element 47 is preferably connected to a current source 50 via an automatic fuse 51 having a thermal release. The release time of the automatic fuse is thereby adapted to the properties of the heat creating element and the welding time that is necessary.
  • the use of an automatic fuse means a simple arrangement since it replaces electronic devices with time circuits, temperature sensors and relays.
  • the device operates in the following manner.
  • dust laden air will be sucked into the cyclone chamber 10 through the inlet 14 whereby a vortex is created which means that the particles that are present in the air will be thrown towards the periphery of the cyclone chamber and leave through the particle outlet 17 whereas the air which is freed from particles leaves through the air outlet 15 towards the fan unit from which the air, via one or several conventional filters if any, leaves to atmosphere.
  • the separated particles, which from the particle outlet 17 flow into the tube part 18 will by means of the rotating screw conveyor 22 to be moved successively down into the bag 37a where they are collected on the bottom of the bag.
  • the ridge 25 and the radial flexibility of the screw conveyor thereby contribute in increasing the possibility for larger objects to pass through the system to the bag.
  • the screw conveyor will compact the content of the bag and the screw conveyor 22 is exposed to an increased turning resistance which means that the current or power demand of the electric motor 23 increases.
  • the fill state of the bag can be indicated and might be connected to the functions of the vacuum cleaner and for instance turn off the vacuum cleaner.
  • the tube halves 26 are turned from one another after which the bag 37a is pulled out such that it is placed immediately outside the collecting container. This means that a part of the tube 31 will be pulled out from the cassette 30. Then the two tube halves 26 are closed which means that the edge 44 will press the plastic layer into the soft dolly 45 such that the part of the plastic which is placed at the tip of the edge is stretched . At the same time current is allowed to flow through the heat creating element 44 such that the plastic is heated to a suitable welding temperature at each side of the tip of the edge whereas the thickness of the plastic layer at the tip of the edge, because of the streching of the plastic material, will be reduced such that it breaks or easily can be torn off.
  • the welding time is thereby automatically determined by the release time of the automatic fuse 51.
  • the bag 37 will consequently be sealed at its bottom and the bag 37a to be sealed at its previous opening at the same time as the bag 37a can be easily be separated and thrown away without spreading the dust which is contained in the bag to the surrounding atmosphere.
  • the vacuum cleaner can then again be activated which means that the underatmospheric pressure created in the tube connection 16, that is larger than the underatmospheric pressure in the bag 37 and which is separated from it by means of the selaing 38, will pull out the bag against the surrounding walls in the collecting container 21 before the bag again is started to be filled with particles.
  • the complete cassette 30 is withdrawn from the collecting container 21 and a new cassette is threaded on the tube part 18 after which a suitable length of the tube 31 is pulled out and sealed at its end by activating the sealing device 41.

Abstract

This invention relates to a device and a method for simultaneously separating and sealing a tube shaped web or the like of thermoplastic material. The device comprises an elongated heated edge (44) or the like co-operating with a soft dolly (45) such that the thermoplastic material is sealed at each side of the edge at the same time as the plastic material at the tip of the edge is exposed to a strech whereby the plastic material breaks or is weakened such that it can easily be torn off.

Description

Device and method for simultaneously separating and sealing a tube shaped web.
This invention relates to a device and a mehod for simultaneously separating and sealing a tube shaped web or the like of thermoplastic material.
The invention is preferably used for vacuum cleaners in order to seal and separate a plastic bag from a tube shaped web arranged in the vacuum cleaner but the device might also be used in other connections where it is desirable to seal and separate plastic bags from such webs. Vacuum cleaners in which the particles are separated by means of cyclonic action are previously known, see for instance US 4463748. In such vacuum cleaners conventional dust bags in which the particles are separated by mechanical filtration are not used. Cyclonic vacuum cleaners are instead provided with a container to which the particles are successively distributed when the air/particle flow whirls around in a cylindrical separation chamber. The particles are by means of the centrifugal forces thrown towards the periphery of the chamber where the inlet of the container is placed . When the container has been filled it is removed from the vacuum cleaner and is emptied into a dust bin or the like. This is from a hygienic point of view not particularly satisfying and consequently other arrangements have been suggested, see US 6168641. According to this arrangement the collecting container encloses a bag, for instance a plastic bag, in which the particles are collected. When the bag has been filled it is removed and is thrown away together with its content Thus, this means a more hygienic handling of the dust bag with its content than the arrangements which are previously known.
For conventional vacuum cleaners, i.e. such vacuum cleaners where the separation takes place by letting the air flow through the filter material of the bag it has previously been suggested, see EP 322387 to use a tube shaped folded filter web which is placed about an inlet tube in a separate chamber that boarders on a bag space. By pulling out the free end of the filter web and close it by means of a closing mechanism at the same time as the filter web is cut off a new bag is created each time a bag is to be changed. Even if such an arrangement gives a simplified handling when changing the bag at conventional vacuum cleaners it is defective with respect to the hygienic conditions since the bag is air pervious which means that dust particles will be deposited on the outside of the bag and make the operator dirty when handling the bag.
The purpose of this invention is to achieve an improved arrangement for a bag changing system for so called cyclone vacuum cleaners. According to the invention the bag in which the dust is collected is completely sealed when the bag is changed without the content of the bag being exposed to the surrounding atmosphere. Thereby a hygienic handling of the dust bag is achieved at the same time as a new bag is applied in the container enclosing the dust bag. This is achieved by means of a device having the characteristics mentioned in the claims. An embodiment of the invention will now be described with reference to the accompanying drawing on which Fig. 1 schematically shows a vertical section through a part of the cyclone vacuum cleaner, Fig. 2 is a section on the line II-II in Fig. 1 whereas Fig. 3 is an enlarged vertical section of the lower part of Fig. 1.
As appears from the figures the vacuum cleaner according to the invention comprises a cyclone chamber 10 that is limited by a cylindrical side wall 11 and a first and a second end wall 12 and 13 resp. The cyclone chamber preferably has a tangentially directed inlet 14 that is connected to a nozzle or the like, not shown, through which dust laden air flows into the cyclone chamber. The cyclone chamber 10 is also provided with a clean air outlet 15 continuing into a passage 16 connected to a vacuum source, not shown, such as an electrically driven fan unit. The end part of the passage 16 is coaxial to the cyclone chamber and extends somewhat into the chamber from the centre of the first end wall 12. The cyclone chamber also has a particle outlet 17 which is placed at the periphery and arranged close to the second end wall 13. The particle outlet 17 continues into a cylindrical tube part 18 that is parallel to the cyclone chamber 10 and is closed at one of its ends by means of a wall part 19 whereas its second free end 20 extends into a collecting container 21 surrounding the tupe part 18. The tube part 18 encloses a screw conveyor 22 that is driven by an electric motor 23 via a shaft 24 extending through a wall part 19. The current or power demand of the electric motor is sensed and in a suitable way influences the electric circuit of the vacuum cleaner. The tube part is also provided with an axially extending ridge 25 extending between the particle outlet 17 and the free end 20 of the tube part 18. The screw conveyor 22 that preferably is made of plastic is flexible in the radial direction and is shaped such that it has an outer diameter which is considerably less than the inner diameter of the tube part 18 whereby the periphery of the screw conveyor has a comparatively large play with respect to the surrounding tube wall and also a certain play with respect to the ridge 25. The collecting container 21 comprises two tube halves 26 each having a first and second end wall 27,28 the tube halves each being supported by a hinge
29 arranged at the outside of the tube part. The two first end walls 27 are shaped such that they surround the tube part 18 whereas the second end walls 28 together form a bottom in the collecting container. The tube halves 26 can thus be turned from and towards one another in order to admit insertion and removal of a cassette
30 which contains a folded, flexible tube 31 of non air pervious material such as plastic.
The cassette 30 has two co-axial, sleeve shaped parts 32 and 33 having different diameters the parts at one of their ends being connected to one another by means of an end wall 34 whereby an annular chamber is created between the sleeve shaped parts in which the folded tube is placed. Also at the other end of the sleeves there is an end wall 35 this being shaped such that a circular slot 36 is created through which the tube is pulled out in order to form a bag 37 in the collecting container 21. Between the cassette 30 and the tube part 18 there is an annular sealing 38 such that the inside of the bag is sealed from the space 39 which exists outside the bag. The last mentioned space also via a conduit 40 is connected to the passage 16.
The tube halves 26 that together form the collecting container 21 comprises a sealing and separating device 41 that is placed in the parting plane between the end walls 28. The last mentioned device preferably comprises a heat creating means that when the bag is changed forms a weld joint 42 on a new bag 37 at the same time as a weld joint 43 is created that seals the opening of a bag 37a that has been used and which also separates the bags 37 and 37a from one another. The sealing and separating device comprises an elongated edge 44, an ridge, a thread shaped means or the like applied on one of the opposite edges of the end walls 28 and a corresponding dolly 45 on the edge of the opposite end wall. The edge 44 is covered by means of a teflon layer 46 and close to the tip of the edge between the end wall and the teflon layer a heat creating, high resistive element 47 is arranged. The dolly 45 comprises a comparatively soft edge portion 48, for instance foamed plastic, arranged at the other end wall the edge portion being covered by a teflon layer 49. The heat creating element 47 is preferably connected to a current source 50 via an automatic fuse 51 having a thermal release. The release time of the automatic fuse is thereby adapted to the properties of the heat creating element and the welding time that is necessary. The use of an automatic fuse means a simple arrangement since it replaces electronic devices with time circuits, temperature sensors and relays. Such an arrangement also protects against overload and automatically compensates for temperature changes. The device operates in the following manner. When the fan unit is started dust laden air will be sucked into the cyclone chamber 10 through the inlet 14 whereby a vortex is created which means that the particles that are present in the air will be thrown towards the periphery of the cyclone chamber and leave through the particle outlet 17 whereas the air which is freed from particles leaves through the air outlet 15 towards the fan unit from which the air, via one or several conventional filters if any, leaves to atmosphere. The separated particles, which from the particle outlet 17 flow into the tube part 18 will by means of the rotating screw conveyor 22 to be moved successively down into the bag 37a where they are collected on the bottom of the bag. The ridge 25 and the radial flexibility of the screw conveyor thereby contribute in increasing the possibility for larger objects to pass through the system to the bag. When the bag 37 is successively filled the screw conveyor will compact the content of the bag and the screw conveyor 22 is exposed to an increased turning resistance which means that the current or power demand of the electric motor 23 increases. By sensing this the fill state of the bag can be indicated and might be connected to the functions of the vacuum cleaner and for instance turn off the vacuum cleaner.
When the dust bag 37a has been filled the tube halves 26 are turned from one another after which the bag 37a is pulled out such that it is placed immediately outside the collecting container. This means that a part of the tube 31 will be pulled out from the cassette 30. Then the two tube halves 26 are closed which means that the edge 44 will press the plastic layer into the soft dolly 45 such that the part of the plastic which is placed at the tip of the edge is stretched . At the same time current is allowed to flow through the heat creating element 44 such that the plastic is heated to a suitable welding temperature at each side of the tip of the edge whereas the thickness of the plastic layer at the tip of the edge, because of the streching of the plastic material, will be reduced such that it breaks or easily can be torn off. The welding time is thereby automatically determined by the release time of the automatic fuse 51. When the automatic fuse has been released the bag 37 will consequently be sealed at its bottom and the bag 37a to be sealed at its previous opening at the same time as the bag 37a can be easily be separated and thrown away without spreading the dust which is contained in the bag to the surrounding atmosphere.
The vacuum cleaner can then again be activated which means that the underatmospheric pressure created in the tube connection 16, that is larger than the underatmospheric pressure in the bag 37 and which is separated from it by means of the selaing 38, will pull out the bag against the surrounding walls in the collecting container 21 before the bag again is started to be filled with particles.
When the tube 31 has been used up the complete cassette 30 is withdrawn from the collecting container 21 and a new cassette is threaded on the tube part 18 after which a suitable length of the tube 31 is pulled out and sealed at its end by activating the sealing device 41.

Claims

Claims
1. Device for simultaneously separating and sealing a tube shaped web or the like of thermoplastic material characterized in that the device comprises an elongated heated edge (44) or the like co-operating with a soft dolly (45) such that the thermoplastic material is sealed at each side of the edge at the same time as the plastic material at the tip of the edge is exposed to a strech whereby the plastic material breaks or is weakened such that it can easily be torn off after sealing.
2. Device according to claim 1 characterized in that the edge (44) is covered by a teflon layer (46) or the like and that a heat creating element (47) is arranged under the teflon layer at the tip of the edge (44).
3. Device according to any of the previous claims characterized in that the dolly (45) is covered by a teflon layer (49) or the like.
4. Device according to claim 3 characterized in that the dolly (45) is provided with a core (48) of resilient material, such as foamed plastic, placed under the teflon layer (49).
5. Device according to any of claims 2-4 characterized in that the heat creating means (47) is connected to a current source (50) via an automatic fuse (51) having a thermal release.
6. Device according to any of the preceding claims characterized in that it is a sealing and cutting element (41) for a tube shaped web (31) arranged in a vacuum cleaner and intended to form several bags (37,37a) in which the dust is collected. . Device according to claim 6 characterized in that the vacuum cleaner is a so called cyclonic vacuum cleaner.
8. Device according to claim 7 characterized in that the vacuum cleaner comprises a cyclone chamber (10) and a collecting container (21) arranged in association to the cyclone chamber for particles separated by the cyclone whereby the cyclone chamber comprises an inlet (14) for dust laden air, an outlet (17) for particles separated by the cyclone and an outlet (15) for cleaned air whereby the lastmentioned outlet is connected to a vacuum source and whereby the particle outlet via a tube part (18) ends in the collecting container (21) and that the collecting container contains the tube shaped web (31). Device according to claim 8 characterized in that the tube shaped web (31) is supported by a cassette (30) which is removably arranged on the tube part (18) in the collecting container (21) whereby the collecting container can be divided and whereby the separating and sealing device (41) is arranged in the parting plane of the collecting container. Method fo simultaneously separating and sealing a tube shaped web or the like of thermoplastic material according to claim 1 characterized in that an elongated heated knife shaped edge by clamping action co-operates with a soft dolly whereby the thermoplastic material is sealed at each side of the edge at the same time as the plastic material at the tip of the edge is stretched such that the plastic material breaks or is weakened such that it can easily be torn off.
PCT/SE2003/000316 2002-03-08 2003-02-26 Device and method for simultaneously separating and sealing a tube shaped web WO2003075731A1 (en)

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Applications Claiming Priority (2)

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SE0200768-0 2002-03-08
SE0200768A SE521544C2 (en) 2002-03-08 2002-03-08 Apparatus and method for simultaneously separating and closing a tubular web in a vacuum cleaner

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004100748A1 (en) * 2003-05-15 2004-11-25 BSH Bosch und Siemens Hausgeräte GmbH Device for removing particles from a separation chamber
CN1299629C (en) * 2004-01-20 2007-02-14 三洋电机株式会社 Electric vacuum cleaner
CN103300791A (en) * 2012-03-08 2013-09-18 碧洁家庭护理有限公司 Vacuum cleaner
WO2021099155A1 (en) * 2019-11-20 2021-05-27 Robert Bosch Gmbh Battery vacuum device, battery vacuum collector and vacuum collector system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0322387A2 (en) * 1987-12-21 1989-06-28 Aktiebolaget Electrolux Vacuum cleaner
EP0563869A1 (en) * 1992-04-02 1993-10-06 WAP Reinigungssysteme GmbH & Co. Vacuum cleaner dust bag
EP0796586A2 (en) * 1996-03-20 1997-09-24 Aktiebolaget Electrolux Closure device for a vacuum cleaner dust bag
WO2002039866A1 (en) * 2000-11-17 2002-05-23 Aktiebolaget Electrolux Vacuum cleaner

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0322387A2 (en) * 1987-12-21 1989-06-28 Aktiebolaget Electrolux Vacuum cleaner
EP0563869A1 (en) * 1992-04-02 1993-10-06 WAP Reinigungssysteme GmbH & Co. Vacuum cleaner dust bag
EP0796586A2 (en) * 1996-03-20 1997-09-24 Aktiebolaget Electrolux Closure device for a vacuum cleaner dust bag
WO2002039866A1 (en) * 2000-11-17 2002-05-23 Aktiebolaget Electrolux Vacuum cleaner

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004100748A1 (en) * 2003-05-15 2004-11-25 BSH Bosch und Siemens Hausgeräte GmbH Device for removing particles from a separation chamber
CN1299629C (en) * 2004-01-20 2007-02-14 三洋电机株式会社 Electric vacuum cleaner
CN103300791A (en) * 2012-03-08 2013-09-18 碧洁家庭护理有限公司 Vacuum cleaner
EP2636348A3 (en) * 2012-03-08 2015-08-05 Bissell Homecare, Inc. Vacuum cleaner and vacuum cleaner system
CN103300791B (en) * 2012-03-08 2017-05-24 碧洁家庭护理有限公司 Vacuum cleaner
US9717380B2 (en) 2012-03-08 2017-08-01 Bissell Homecare, Inc. Vacuum cleaner
US10398268B2 (en) 2012-03-08 2019-09-03 Bissell Homecare, Inc. Vacuum cleaner
WO2021099155A1 (en) * 2019-11-20 2021-05-27 Robert Bosch Gmbh Battery vacuum device, battery vacuum collector and vacuum collector system

Also Published As

Publication number Publication date
SE521544C2 (en) 2003-11-11
SE0200768D0 (en) 2002-03-08
SE0200768L (en) 2003-09-09
AU2003206582A1 (en) 2003-09-22

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