EP3771651B1 - Detektionssystem und detektionsverfahren zur detektion der betätigung eines deckels in einer vakuumverpackungmaschine - Google Patents

Detektionssystem und detektionsverfahren zur detektion der betätigung eines deckels in einer vakuumverpackungmaschine Download PDF

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Publication number
EP3771651B1
EP3771651B1 EP19382670.8A EP19382670A EP3771651B1 EP 3771651 B1 EP3771651 B1 EP 3771651B1 EP 19382670 A EP19382670 A EP 19382670A EP 3771651 B1 EP3771651 B1 EP 3771651B1
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EP
European Patent Office
Prior art keywords
vacuum
lid
vat
detecting
detection method
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EP19382670.8A
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English (en)
French (fr)
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EP3771651A1 (de
Inventor
Albert TORNÉ FICAPAL
Joel FARRAN SEUMA
Edgar BOSCH TUFET
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Immobles del Segria SL
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Immobles del Segria SL
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Priority to EP19382670.8A priority Critical patent/EP3771651B1/de
Priority to ES19382670T priority patent/ES2914500T3/es
Publication of EP3771651A1 publication Critical patent/EP3771651A1/de
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    • 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
    • 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
    • B65B57/00—Automatic control, checking, warning, or safety devices

Definitions

  • the present invention relates to a detection method for detecting the closure of a lid in vacuum packing machines which can be applied to tabletop or free-standing vacuum packing machines.
  • Vacuum packing machines basically consist of a vacuum pump (where the suction capacity of the pump is different depending on the model), a hood where the vacuum is generated, a sealing system, solenoid valves and an electronic or electromechanical control system.
  • the food is introduced in a bag, which in turn is introduced in the hood of the packer.
  • the packer then extracts air from the hood by means of a vacuum pump until reaching the level desired by the user.
  • the bag is sealed and atmospheric pressure is restored in the chamber. Since the bag containing the food is sealed before restoring atmospheric pressure, it stays at the pressure desired by the user.
  • Said machines usually have different models depending on the size of the food to be packed, the productivity to be obtained, or simply depending on the space where the packer is to be located, which results in the development of different machines that are larger in size (type of element to be packed) or different pumps with different suction flow rate values (depending on productivity and size).
  • the user To start a packing cycle, the user must close the lid of the packer, and when the packer detects that the lid is lowered, it switches on the vacuum pump, suctioning out the air in the enclosure. It is therefore understood that a vacuum cycle starts when the lid is closed.
  • a switch is used to detect the state of the lid. This switch can be visible in the upper portion, between a vat and the lid, or invisible, actuated by the hinge. This switch is connected to the control electronics of the packer which, upon receiving the signal that it has actuated, switches on the vacuum pump.
  • Vacuum packers also comprise a vacuum sensor of the control electronics, the vat and the pump, which are pneumatically connected.
  • the vacuum sensor can thereby detect changes in pressure in the vat due to the actuation of the pump. This allows the control electronics to determine the end of the vacuum cycle.
  • JP6498955B2 discloses a vacuum packaging machine which can, when vacuum-packaging an object to be packaged of which temperature is higher than atmospheric temperature in a packaging bag, vacuum-package with sufficient deaeration in the packaging bag without boiling over the object to be packaged from the packaging bag.
  • US3832824A discloses a method and apparatus for evacuating receptacles, especially impervious, flexible receptacles such as thermoplastic bags and pouces. This document has particular application in the vacuum packaging of fresh and frozen food products such as beef, poultry, ham, cheese, etc.
  • US6256968B1 discloses a vacuum packaging apparatus having a novel vacuum sensor system.
  • the vacuum sensor system includes first and second sensors in communication with a control circuit, which sensors are provided to detect first and second preset vacuum levels as a container is being evacuated.
  • US2018257798A1 discloses a vacuum packaging method and a vacuum packaging apparatus that can sufficiently degasify the inside of a packaging bag without any trouble and in which bubbles are less likely to remain inside the packaging bag after vacuum packaging, even if a liquid is included in a packaged object.
  • US5655357A discloses a vacuum sensor for use in devices for the vacuum packaging of perishable items.
  • the vacuum sensor senses fluid pulses or flow expelled from an exhaust port of a pump of the vacuum packaging device.
  • the sensor converts a force of the fluid pulses or flow into a signal that changes with a change in the force of the fluid pulses or flow.
  • EP1925556A2 discloses an apparatus for the vacuum packaging of food products, comprising a box-like frame which defines at least one portion of a vacuum chamber, which can be connected to means for generating vacuum and is adapted to accommodate a pouch containing the food products to be packaged, a heat-sealing bar being provided inside the vacuum chamber and being adapted to seal the mouth of the pouch.
  • US2005011166A1 discloses a machine for vacuum packing in plastic bags and rigid containers comprising an airtight chamber, suited to accommodate a plastic bag with the relative product, and means for sucking air from said chamber, so as to create a vacuum in the chamber and in the bag contained therein.
  • US2014069057A1 discloses a method for operating a chamber packaging machine, wherein the position of a sealing bar is during the evacuation of a diaphragm checked using a sensor.
  • an objective of the present invention is to provide a detection method for detecting a lid in a vacuum packing machine that does not use a switch, resulting in the cost of the packing machine being lower than conventional packing machines using a switch.
  • a detection system for detecting the closure of a lid in vacuum packing machines comprising a vat which is closed by means of a lid, said lid comprising a sealing gasket, wherein the detection system comprises a vacuum sensor connected with the vat, which detects a pressure value in the vat, such that it is determined that the lid is closed depending on said pressure value detected by the vacuum sensor.
  • said vacuum sensor is connected to control electronics.
  • said vacuum sensor is connected with the vat preferably by means of a connection tube.
  • the detection system also preferably comprises a vacuum pump connected to said vat, for example, by means of a suction tube.
  • Said lid is assembled in said vat in an articulated manner by means of one or more hinges.
  • the present invention relates to a detection method for detecting the closure of a lid in vacuum packing machines, the vacuum packing machine comprising a vat which is closed by means of a lid, said lid comprising a sealing gasket, the method comprising the following steps:
  • the vacuum pump is switched off.
  • said first predetermined time period is comprised between 0 and 1 second
  • the second predetermined time period is comprised between 0 and 10 seconds.
  • the main advantage of the present invention is a reduction in costs, greater ease of assembly and a higher reliability as movable parts are eliminated in the apparatus.
  • a vacuum packing machine comprising a detection system for detecting the actuation of the lid without the use of a switch is disclosed.
  • the vacuum sensor of the actual packing machine is used to detect that the user has closed the lid, and the vacuum cycle can thus start.
  • the vacuum packing machine comprises:
  • the vacuum packing machine further comprises a chassis, casing, solenoid valves, sealing bar, transformer, etc., which, while necessary for the remaining functions of the packing machine, are conventional and not part of the present invention. Therefore, for the sake of simplicity, these additional elements of the packing machine will not be described in detail.
  • control electronics 7 constantly monitors the value of the vacuum sensor 8.
  • the vacuum sensor 8 Since it is attached to the vacuum sensor 8 by means of the connection tube 9, the vacuum sensor 8 can detect this slight and sudden increase in pressure.
  • control electronics switches on the vacuum pump 5 for a time T.
  • the vacuum pump 5 Since the vacuum pump 5 is connected to the vat 1 by means of the suction tube 6, if the lid 2 is suitably closed, at the end of this time T the vacuum sensor 8 should detect a decrease in pressure of amplitude A in the vat 1.
  • Figure 3 shows a correct detection process, in which an increase in pressure A' in an interval T', followed by a decrease in pressure A in an interval T, is detected.
  • Figure 4 thereby shows a failed detection process, in which an increase in pressure A' in an interval T' is detected. It can be seen that at the end of time T, the pressure has not dropped below the amplitude A, so the pump is stopped and the original pressure is restored.
  • the main advantage of the present invention is a reduction in costs, greater ease of assembly and a higher reliability as movable parts are eliminated in the apparatus.

Claims (6)

  1. Ein Detektionsverfahren zur Detektion des Schließens eines Deckels (2) in Vakuumverpackungsmaschinen, wobei die Vakuumverpackungsmaschine eine Wanne (1) umfasst, die mittels eines Deckels (2) geschlossen wird, wobei der Deckel (2) eine Dichtung (3) umfasst, dadurch gekennzeichnet, dass es die folgenden Schritte umfasst:
    - ständiges Überwachen des Drucks im Inneren der Wanne (1);
    - Detektieren, ob der Druck im Inneren der Wanne (1) in einer ersten vorbestimmten Zeitspanne angestiegen ist;
    - wenn ein Druckanstieg im Inneren der Wanne (1) festgestellt wird, Einschalten einer Vakuumpumpe (5) für eine zweite vorbestimmte Zeitspanne;
    - Detektieren, ob der Druck im Inneren der Wanne (1) nach dem Einschalten der Vakuumpumpe (5) abgefallen ist; und
    - Feststellen, dass der Deckel (2) geschlossen ist, wenn ein ausreichender Druckabfall im Inneren der Wanne (1) detektiert worden ist.
  2. Das Detektionsverfahren nach Anspruch 1, wobei, wenn kein ausreichender Druckabfall im Inneren der Wanne (1) nach der zweiten vorbestimmten Zeitspanne festgestellt wird, die Vakuumpumpe (5) ausgeschaltet wird.
  3. Das Detektionsverfahren nach Anspruch 1, wobei die erste vorbestimmte Zeitspanne zwischen 0 und 1 Sekunde beträgt.
  4. Das Detektionsverfahren nach Anspruch 1 oder 2, wobei die zweite vorbestimmte Zeitspanne zwischen 0 und 10 Sekunden beträgt.
  5. Das Detektionsverfahren nach Anspruch 1, wobei festgestellt wird, dass ein Druckanstieg vorliegt, wenn der Anstieg zwischen 0 und 10 kPa beträgt.
  6. Das Detektionsverfahren nach Anspruch 1, wobei festgestellt wird, dass ein Druckabfall vorliegt, wenn der Abfall zwischen 0 und 100 kPa beträgt.
EP19382670.8A 2019-08-01 2019-08-01 Detektionssystem und detektionsverfahren zur detektion der betätigung eines deckels in einer vakuumverpackungmaschine Active EP3771651B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19382670.8A EP3771651B1 (de) 2019-08-01 2019-08-01 Detektionssystem und detektionsverfahren zur detektion der betätigung eines deckels in einer vakuumverpackungmaschine
ES19382670T ES2914500T3 (es) 2019-08-01 2019-08-01 Sistema de detección y procedimiento de detección para detectar el accionamiento de una tapa en una máquina de embalaje al vacío

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19382670.8A EP3771651B1 (de) 2019-08-01 2019-08-01 Detektionssystem und detektionsverfahren zur detektion der betätigung eines deckels in einer vakuumverpackungmaschine

Publications (2)

Publication Number Publication Date
EP3771651A1 EP3771651A1 (de) 2021-02-03
EP3771651B1 true EP3771651B1 (de) 2022-03-02

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Application Number Title Priority Date Filing Date
EP19382670.8A Active EP3771651B1 (de) 2019-08-01 2019-08-01 Detektionssystem und detektionsverfahren zur detektion der betätigung eines deckels in einer vakuumverpackungmaschine

Country Status (2)

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EP (1) EP3771651B1 (de)
ES (1) ES2914500T3 (de)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3832824A (en) * 1973-06-29 1974-09-03 Grace W R & Co Apparatus and method for evacuating packages
US5655357A (en) * 1995-05-02 1997-08-12 Tilia International, Inc. Exhaust flow rate vacuum sensor
US6256968B1 (en) * 1999-04-13 2001-07-10 Tilia International Volumetric vacuum control
ITMI20010270A1 (it) * 2001-02-09 2002-08-09 Germano Maina Macchina per il confezionamento sottovuoto in sacchetti di plastica econtenitori rigidi
ITVR20060181A1 (it) * 2006-11-24 2008-05-25 Marziano Salvaro Apparecchiatura per il confezionamento sottovuoto di prodotti alimentari
JP5575827B2 (ja) * 2012-03-27 2014-08-20 株式会社Ｔｏｓｅｉ 真空包装方法、および、真空包装装置
DE102012017827B4 (de) * 2012-09-10 2021-07-15 Multivac Sepp Haggenmüller Se & Co. Kg Verfahren zum Betrieb einer Kammermaschine
JP6498955B2 (ja) * 2015-02-16 2019-04-10 ホシザキ株式会社 真空包装機

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EP3771651A1 (de) 2021-02-03
ES2914500T3 (es) 2022-06-13

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