EP3560844B1 - Machine d'emballage à grille chauffante - Google Patents

Machine d'emballage à grille chauffante Download PDF

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Publication number
EP3560844B1
EP3560844B1 EP18169828.3A EP18169828A EP3560844B1 EP 3560844 B1 EP3560844 B1 EP 3560844B1 EP 18169828 A EP18169828 A EP 18169828A EP 3560844 B1 EP3560844 B1 EP 3560844B1
Authority
EP
European Patent Office
Prior art keywords
packaging machine
grid
machine according
chamber
suction opening
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.)
Active
Application number
EP18169828.3A
Other languages
German (de)
English (en)
Other versions
EP3560844A1 (fr
Inventor
Rainer Häring
Maximilian Brunner
Florian FRÜHSAMMER
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.)
Multivac Sepp Haggenmueller GmbH and Co KG
Original Assignee
Multivac Sepp Haggenmueller GmbH and Co KG
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 Multivac Sepp Haggenmueller GmbH and Co KG filed Critical Multivac Sepp Haggenmueller GmbH and Co KG
Priority to EP18169828.3A priority Critical patent/EP3560844B1/fr
Priority to ES18169828T priority patent/ES2872970T3/es
Priority to CN201920578578.3U priority patent/CN210116681U/zh
Priority to US16/395,724 priority patent/US11254458B2/en
Publication of EP3560844A1 publication Critical patent/EP3560844A1/fr
Application granted granted Critical
Publication of EP3560844B1 publication Critical patent/EP3560844B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/02—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas
    • B65B31/024—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas specially adapted for wrappers or bags

Definitions

  • the present invention relates to a packaging machine for packaging products under vacuum.
  • Packaging machines are used that evacuate a product package with a product located therein and then seal it.
  • a vacuum is generated in an otherwise gas-tight sealed chamber by sucking the air out of the chamber by means of a suction device.
  • a suction opening expediently formed in the chamber floor serves as an air outlet.
  • the packaging machine can be designed as a single device into which the product packaging is inserted manually, or as part of an automated production line in which the product packaging is transported into the packaging machine by means of a conveyor belt.
  • Such a packaging machine is from the EP 2 110 321 B1 known.
  • a disadvantage of such packaging machines is that when the air is sucked out of the chamber at the suction opening due to the cross-sectional constriction, there is a local increase in the flow rate and thus a decrease in the static pressure with a simultaneous decrease in the temperature. This effect often leads to the suction opening icing up.
  • a vacuum device with a sorbent cartridge which is integrated into the suction channel in such a way that moisture, which is present in the air to be sucked out of the vacuum chamber, is retained in a sorbent and thus does not damage the vacuum pump.
  • the sorbent is arranged in the cartridge by means of a grating in such a way that a collecting channel is created in the cartridge, so that the sorbent flows through homogeneously.
  • Another vacuum device is from the EP 3 162 718 A1 known.
  • the object of the invention is to provide a packaging machine in which operation of the machine is improved.
  • An electrically heatable grid is arranged "on" the suction opening (ie in the area of the suction opening) in order to heat the suction opening when the chamber is evacuated.
  • the grid is preferably arranged in or above the suction opening.
  • the thermal radiation from the grille can heat the edges of the suction opening, which also contributes to the desired effect, namely the prevention of ice formation.
  • the grid is mounted on an electrically insulating frame. Since the grid itself has a current flowing through it and is usually not covered with insulation, it can nevertheless be mounted on the chamber floor or the edges of the suction opening.
  • the chamber floor in which the suction opening is formed is usually made of a metal, for example stainless steel, for reasons of hygiene and stability. Because the grille is mounted on an electrically insulating frame, there is no conductive connection between the grille and the chamber floor, thus preventing further electronic components of the packaging machine or an operator from being impaired by electrical current.
  • the frame rests essentially flush on the chamber floor and completely surrounds the suction opening, so that all the suctioned air flows through the grille during evacuation.
  • the device thus develops its greatest possible efficiency, since only air reaches the suction opening that has flowed through the heated grid.
  • the grid is fixed at a first and a second end with contact pins which protrude through the chamber floor and are installed in a vacuum-tight manner.
  • the contact pins are used to mechanically fix the grille and the insulating frame to the chamber floor, so that all three components are flush with one another and the passage of air between the surfaces with which they lie on one another is prevented.
  • the fastening can take place via screw connections, the grid and the insulating frame each having bores or recesses through which a screw can be inserted and then screwed into the contact pin with an internal thread. In this way, the connection can be released again and the components can be replaced if necessary.
  • a power supply is provided to supply the grid with approximately 80 to 800 watts of electrical power, preferably 400 to 600 watts.
  • electrical power available for the To be able to resist heating the grid.
  • sufficient electric current also flows through the lateral areas from the first to the second end of the grid.
  • the contact pins establish an electrical connection between the grid and the power supply, the contact pins being electrically isolated from the chamber floor.
  • the contact pins have, for example, a core made of electrically conductive material and a sheath made of electrically insulating material. In this way, the current can be conducted through the chamber floor to the grid without electricity being transferred to the chamber floor.
  • the power supply has an on-time period of approximately 0.5 to 1.5 s, which may be repeated regularly. In this way, the required heating power is available within a short time and it is sufficient to switch on the power supply to the grille just this time before and during the evacuation process. After the evacuation has ended, the power supply can be switched off again. In this way, the power consumption is reduced to the necessary minimum, but the cycle times of the packaging machine are not impaired.
  • the grid is typically made of an electrically conductive material approved for the food sector, in particular stainless steel. Due to its conductivity, the material is therefore suitable for resistance heating, but does not release any substances into the environment when it is heated. This prevents the products to be packaged from being adversely affected.
  • the grid has a length of approx. 50 to 120 mm and a width of approx. 20 to 80 mm.
  • the grid dimensions are primarily based on the size of the suction opening and, if necessary, slightly exceed it in order to completely span the suction opening.
  • the grid and the insulating frame can, for example, have a substantially rectangular shape with a longer and a shorter side.
  • the contact pins are usually arranged on the short sides. Because of the resistance that forms, the current flows almost evenly through all the grid struts from the first to the second, short side of the grid.
  • the grid has webs which in particular have a width and a height of approximately 0.5 to 1.5 mm.
  • the dimensions of the webs are chosen so that when a suitable electrical voltage is applied, they are heated with the best possible efficiency due to their resistance.
  • the webs are spaced approximately 8 to 10 mm apart. This ensures that the air flow through the suction opening is not reduced by the grille.
  • the packaging machine is a chamber belt machine. It is part of an automated production line and the product packaging to be evacuated is conveyed to the chamber by means of a conveyor belt, where it is evacuated and sealed. This enables high cycle times and thus high product output without manual intervention.
  • Figure 1 shows a packaging machine 1 in the form of a chamber belt machine with a vertically displaceable cover 3 and a chamber base 5. If the cover 3 is lowered onto the chamber base 5, a chamber 7 is formed which seals between the cover 3 and the chamber base 5 in a gas-tight manner.
  • two suction openings 9 are formed in the chamber floor 5, over each of which a heatable grille 11 is arranged.
  • the chamber 7 is evacuated through the suction openings 9.
  • the product packaging to be evacuated is transported on a conveyor belt 13 into the chamber 7.
  • the ends of a product package can be guided over a sealing bar 15 in such a way that the product package can be permanently closed by a heat seal after a vacuum has been formed in the chamber 7.
  • FIG. 2 shows the heatable grille 11 which is arranged on an insulating frame 17.
  • the grid 11 has webs 19 which extend in the longitudinal and transverse directions. According to the dimensions described above, the grid 11 has a length L and a width B.
  • the webs 19 have a height H, a width B1 and a distance A from one another.
  • a first and a second solid end 21, 23 are formed in a triangular shape on the grid 11, which is essentially rectangular in shape.
  • the two ends 21, 23 are each screwed to the frame 17 and a contact pin 27 by means of a screw 25.
  • the contact pins 27 are tensioned against the chamber floor 7 by means of a screw nut 29 each, so that the frame 17 also rests flush on the chamber floor 7.
  • the first and second ends 33, 35 of the insulating frame 17 each have a bevel on its upper side, which makes it possible to mount the contact pins 27 with a corresponding inclination. Matching the slope of the first and second ends 22, 35 of the insulating frame 17, the first and second ends 21, 23 of the grid 11 are bent upwards.
  • the contact pins 27 for the assembly for example, the tightening of the nuts 29, easily accessible adjacent to a suction device.
  • Figure 3 shows a section through the suction opening 9 with a heatable grille 11 arranged thereon and part of a suction device 37.
  • the grille 11 is mounted on the frame 17 and is thus electrically insulated from the chamber floor 5.
  • the frame 17 is flush with the chamber floor 5, so that only air which has flowed through the grille 11 and has thus been heated reaches the suction opening 9.
  • the contact pins 27 have an electrically conductive inner part 39 and insulation 41 surrounding the inner part 39.
  • In the inner part 37 there is a bore 43 with an internal thread into which the screw 25 is screwed in order to connect the grid 11 and the frame 17 to the contact pin 27.
  • the contact pins 27 In the chamber bottom 5 there are bores or recesses through which the contact pins 27 are passed.
  • the contact pin 27 is braced by means of the screw nut 29 on the outer or lower side of the chamber bottom 5.
  • the vacuum tightness at the lead-through of the contact pins 27 is ensured by the seals 50 surrounding the contact pins 27.
  • Power supply lines 45 are expediently connected to the electrically conductive inner part 39, for example by soldering, welding or screwing.
  • a power supply 47 for example a transformer, provides the required electrical energy.
  • the suction device 37 comprises an air duct 49, through which the air is sucked out of the chamber 5 by means of a vacuum pump (not shown).
  • a piston 53 is arranged in a cylinder-like guide 51, which can be moved up and down and closes the suction opening 9 with an accurate fit in an uppermost position.
  • the grid 11 and the frame 17 can be lengthened in their longitudinal extent so that the contact pins 17 can be oriented essentially perpendicular to the chamber floor 5 and assembly, in particular tightening of the nuts 29, is nevertheless possible.
  • the first and second ends 21, 23 of the grille 11 and the first and second ends 33, 35 of the frame 17, i.e. the solid sections could be enlarged accordingly so that the air-flow area of the grille 11 remains unchanged in size.
  • the suction openings 9 in the chamber floor 5, it is also possible to place the suction openings 9 at other suitable locations in the chamber 7, for example on the top or the side surfaces of the lid 3 to train.
  • Further modifications to the structure of the packaging machine 1 per se are also possible in a variety of ways.
  • the lid 3 can be linked to a hinge on the chamber floor 5 or a frame of the packaging machine 1 and opened and closed by opening and closing instead of by vertical displacement.
  • the grid 11 instead of crossing webs 19, the grid 11 can also have these in a different orientation to one another, for example parallel along only one direction, in the sense of the invention.
  • the webs 19 can be dispensed with entirely, so that the grille 11, preferably depending on the shape of the suction opening 9, is essentially a resistance-heated frame or ring that particularly heats the edge of the suction opening 9 so that ice formation is prevented there .

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vacuum Packaging (AREA)

Claims (13)

  1. Machine d'emballage (1) permettant d'emballer des produits sous vide, dans laquelle la machine d'emballage (1) comprend un couvercle (3) et un fond de cloche (5) formant ensemble une cloche (7), dans laquelle une ouverture d'aspiration (9), pouvant être obturée de manière étanche aux gaz et à laquelle est relié un dispositif d'aspiration (37) permettant d'évacuer la cloche (7), est réalisée dans le fond de cloche (5), caractérisée en ce qu'une grille (11), pouvant être chauffée de manière électrique grâce à une résistance et réalisée en un matériau électriquement conducteur et apte au contact alimentaire, est agencée au niveau de l'ouverture d'aspiration (9).
  2. Machine d'emballage selon la revendication 1, caractérisée en ce que la grille (11) est agencée dans ou au-dessus de l'ouverture d'aspiration (9).
  3. Machine d'emballage selon l'une quelconque des revendications précédentes, caractérisée en ce que la grille (11) est montée sur un châssis (17) électriquement isolant.
  4. Machine d'emballage selon la revendication 3, caractérisée en ce que le châssis (17) repose de manière essentiellement alignée sur le fond de cloche (5) et entoure complètement l'ouverture d'aspiration (9) de sorte que tout l'air aspiré s'écoule à travers la grille (11) lors de l'évacuation.
  5. Machine d'emballage selon l'une quelconque des revendications précédentes, caractérisée en ce que la grille (11) est fixée au niveau de première et seconde extrémités (21, 23) grâce à des broches de contact (27) rendues étanches au vide et apparaissant à travers le fond de cloche (5).
  6. Machine d'emballage selon l'une quelconque des revendications précédentes, caractérisée en ce qu'une alimentation électrique (47) permettant d'alimenter la grille (11) avec une puissance électrique comprise entre environ 80 et 800 watts, de manière préférée comprise entre 400 et 600 watts, est prévue.
  7. Machine d'emballage selon les revendications 5 et 6, caractérisée en ce que les broches de contact (27) établissent une connexion électrique entre la grille (11) et l'alimentation électrique (47), dans laquelle les broches de contact (27) sont isolées électriquement du fond de cloche (5).
  8. Machine d'emballage selon la revendication 6 ou 7, caractérisée en ce que l'alimentation électrique (47) présente une durée de mise sous tension comprise entre environ 0,5 et 1,5 s.
  9. Machine d'emballage selon l'une quelconque des revendications précédentes, caractérisée en ce que la grille (11) est réalisée en acier inoxydable.
  10. Machine d'emballage selon l'une quelconque des revendications précédentes, caractérisée en ce que la grille (11) présente une longueur (L) comprise entre environ 50 et 120 mm et une largeur (B) comprise entre environ 20 et 80 mm.
  11. Machine d'emballage selon l'une quelconque des revendications précédentes, caractérisée en ce que la grille (11) présente des entretoises (19) présentant en particulier une largeur (B1) et une hauteur (H) comprise entre environ 0,5 et 1,5 mm.
  12. Machine d'emballage selon la revendication 11, caractérisée en ce que les entretoises (19) présentent les unes par rapport aux autres un espacement (A) compris entre environ 8 et 10 mm.
  13. Machine d'emballage selon l'une quelconque des revendications précédentes, caractérisée en ce que la machine d'emballage (1) est une machine à tapis et cloche.
EP18169828.3A 2018-04-27 2018-04-27 Machine d'emballage à grille chauffante Active EP3560844B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP18169828.3A EP3560844B1 (fr) 2018-04-27 2018-04-27 Machine d'emballage à grille chauffante
ES18169828T ES2872970T3 (es) 2018-04-27 2018-04-27 Máquina envasadora con rejilla calentada
CN201920578578.3U CN210116681U (zh) 2018-04-27 2019-04-25 包装机
US16/395,724 US11254458B2 (en) 2018-04-27 2019-04-26 Packaging machine with heated grid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18169828.3A EP3560844B1 (fr) 2018-04-27 2018-04-27 Machine d'emballage à grille chauffante

Publications (2)

Publication Number Publication Date
EP3560844A1 EP3560844A1 (fr) 2019-10-30
EP3560844B1 true EP3560844B1 (fr) 2021-02-24

Family

ID=62089626

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18169828.3A Active EP3560844B1 (fr) 2018-04-27 2018-04-27 Machine d'emballage à grille chauffante

Country Status (4)

Country Link
US (1) US11254458B2 (fr)
EP (1) EP3560844B1 (fr)
CN (1) CN210116681U (fr)
ES (1) ES2872970T3 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IE51047B1 (en) * 1980-06-25 1986-09-17 Grace W R & Co Packaging process and apparatus
US5533341A (en) * 1995-06-07 1996-07-09 Air Liquide America Corporation Apparatus and method for producing and injecting sterile cryogenic liquids
WO1999054207A1 (fr) * 1998-04-17 1999-10-28 Toyo Seikan Kaisha, Ltd. Procede et dispositif de fabrication d'un corps de conditionnement a pression positive
US7464521B2 (en) * 2002-12-20 2008-12-16 Sealed Air Corporation, New Zealand Vacuum packaging machine for product packages with multiple products
US6862867B2 (en) * 2003-01-16 2005-03-08 Pack-Tech, L.L.C. Bag sealing system and method
DE102008019629A1 (de) 2008-04-18 2009-10-29 Multivac Sepp Haggenmüller Gmbh & Co. Kg Verpackungsmaschine und Verfahren zum Verpacken von Produkten in Beuteln
DE102015002421A1 (de) * 2015-02-26 2016-09-01 Zeo-Tech Zeolith-Technologie Gmbh Vakuum-Gerät mit Sorptionsmittel-Patrone
DE102015013444A1 (de) * 2015-10-15 2017-04-20 Michatek K.S. Vakuumschublade zum Vakuumieren von Lebensmitteln
DE102016123569A1 (de) * 2016-12-06 2018-06-07 Multivac Sepp Haggenmüller Se & Co. Kg Schalenverschließmaschine

Also Published As

Publication number Publication date
CN210116681U (zh) 2020-02-28
US20190329919A1 (en) 2019-10-31
ES2872970T3 (es) 2021-11-03
US11254458B2 (en) 2022-02-22
EP3560844A1 (fr) 2019-10-30

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