WO2022244647A1 - Packaging bag gas concentration measuring device, and packaging bag gas concentration measuring method - Google Patents

Packaging bag gas concentration measuring device, and packaging bag gas concentration measuring method Download PDF

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Publication number
WO2022244647A1
WO2022244647A1 PCT/JP2022/019761 JP2022019761W WO2022244647A1 WO 2022244647 A1 WO2022244647 A1 WO 2022244647A1 JP 2022019761 W JP2022019761 W JP 2022019761W WO 2022244647 A1 WO2022244647 A1 WO 2022244647A1
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Prior art keywords
packaging bag
laser
gas concentration
measuring device
concentration measuring
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PCT/JP2022/019761
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French (fr)
Japanese (ja)
Inventor
雅志 大島
祐樹 宮部
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ゼネラルパッカー株式会社
雅志 大島
祐樹 宮部
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Publication of WO2022244647A1 publication Critical patent/WO2022244647A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/39—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/59—Transmissivity

Definitions

  • the present invention relates to a packaging bag gas concentration measuring device and a packaging bag gas concentration measuring method capable of measuring the concentration of a specific gas in a packaging bag.
  • gas replacement packaging is performed to remove residual air from the packaging bag and fill it with an inert gas such as nitrogen or carbon dioxide.
  • an inert gas such as nitrogen or carbon dioxide.
  • the measurement method using this laser type gas concentration measuring device utilizes the property that most gas molecules absorb light of a specific wavelength, and measures the gas concentration by measuring the number of gas molecules within a certain distance. is. For this reason, it is important that the tip of the laser emitting part or the tip of the laser receiving part of the laser type gas concentration measuring device and the object to be measured (packaging bag) are brought into close contact with each other so that there is no gap.
  • the packaging container used to package the item to be packaged is a bag
  • the above-mentioned adhesion may be insufficient, or the detection space inside the packaging bag may not be sufficiently secured, resulting in deterioration in measurement accuracy.
  • an object of the present invention is to ensure the adhesion between the tip of the laser emitting part and the tip of the laser receiving part and the object to be measured (packaging bag), and to secure a sufficient detection space in the bag to improve the measurement accuracy.
  • An object of the present invention is to provide a packaging bag gas concentration measuring device and a packaging bag gas concentration measuring method that can be improved.
  • a gas concentration measuring device for a packaging bag which measures the concentration of a specific gas in a packaging bag filled with an object to be packaged and replaced with gas, and is irradiated with a laser beam of a specific wavelength. and a laser light receiving part having a receiver for receiving the laser light emitted from the transmitter, wherein the laser generating part and the laser light receiving part are arranged on both sides of the packaging bag. It has a laser type gas concentration meter arranged facing each other, and the laser generating part and the laser receiving part each have a suction cup part that can be sucked for sealing (adhering) the respective tip parts and the packaging bag. (Claim 1).
  • the suction cup portion has a bag guide plate (Claim 2). It is preferable that the suction cup portion is arranged so as to suck the packaging bag from diagonally above the packaging bag arranged vertically in the thickness direction (Claim 3). It is preferable that the sucker provided at the tip of the laser generator has a lens that refracts the laser beam emitted from the transmitter and causes the receiver to receive the laser beam (claim 4).
  • a laser generator having a transmitter that emits laser light of a specific wavelength, and a laser light receiving section that has a receiver that receives the laser light oscillated from the transmitter
  • a method for measuring the gas concentration of a packaging bag (claim 5).
  • the gas concentration measuring device for a packaging bag According to the gas concentration measuring device for a packaging bag according to claim 1, it is possible to ensure the close contact between the tip of the laser emitting part or the tip of the laser receiving part and the object to be measured (packaging bag), and the inside of the packaging bag is sufficient. It is possible to secure a sufficient detection space and improve the measurement accuracy. According to the gas concentration measuring device for a packaging bag described in claim 2, a sufficient detection space is ensured in the packaging bag by deforming the packaging bag into a shape along the bag guide plate as the suction cup part sucks. can improve measurement accuracy.
  • the sucker portion can be brought into closer contact with the object to be measured (packaging bag) in response to the bulging of the packaging bag, and sufficient It is possible to secure the detection space and improve the measurement accuracy.
  • the gas concentration measuring device for packaging bags according to claim 4 the laser beam oscillated from the transmitter is refracted to adjust the optical axis with the receiver, and the laser beam is reliably received by the receiver. can be done.
  • the method for measuring the gas concentration of a packaging bag according to claim 5 it is possible to ensure the adhesion between the tip of the laser emitting part or the tip of the laser receiving part and the object to be measured (packaging bag), and the inside of the packaging bag is sufficient. It is possible to secure a sufficient detection space and improve the measurement accuracy.
  • FIG. 1 is a schematic front view for explaining an embodiment of a packaging bag gas measuring device of the present invention
  • FIG. 2 is a partially enlarged longitudinal sectional view for explaining the gas measuring device for the packaging bag shown in FIG. 1
  • FIG. 2 is an explanatory diagram for explaining a bag guide of the gas measuring device for the packaging bag shown in FIG. 1, where (a) is a schematic front view, (b) is a left side view, and (c) is a plan view; is.
  • a laser generator 2 having a transmitter 1 for irradiating a laser beam of a specific wavelength and a laser receiver 4 having a receiver 3 for receiving the laser beam oscillated from the transmitter 1 are provided. Since the part 2 and the laser light receiving part 4 have sucker parts 6 and 7 capable of sucking the packaging bag at the tip part, the tip of the laser emitting part 2 and the tip of the laser light receiving part 4 can be connected to the object to be measured (packaging).
  • a gas concentration measuring device G for a packaging bag has been realized that can ensure close contact with the packaging bag and can secure a sufficient detection space in the packaging bag to improve the measurement accuracy.
  • FIG. 1 A gas concentration measuring device for packaging bags according to the present invention will be described with reference to an embodiment shown in FIGS. 1 to 3.
  • FIG. The gas concentration measuring device G for a packaging bag of this embodiment is a packaging bag H (not limited to a packaging bag filled with food, but filled with a medical infusion solution, for example, filled with an object S to be packaged and replaced with gas).
  • a gas concentration measuring device for a packaging bag that measures the concentration of a specific gas in a packaging bag filled with something other than food such as an infusion bag, and has a transmitter 1 that irradiates a laser beam of a specific wavelength. and a laser receiving part 4 having a receiver 3 for receiving laser light emitted from the transmitter 1.
  • the laser generating part 2 and the laser receiving part 4 are arranged on both sides of the packaging bag H so as to face each other.
  • the laser generating unit 2 and the laser receiving unit 4 have suction cups 6 and 7 capable of sucking the packaging bag H at their distal ends. Each configuration will be described in detail below.
  • the gas concentration measuring apparatus of this embodiment uses a laser type gas densitometer 5 to measure the concentration of oxygen, which is a specific gas, in a packaging bag H packed after gas replacement with an inert gas such as nitrogen or carbon dioxide. It is used as a single measuring device, or installed in the inspection process in various packaging machines such as rotary packaging machines, truck packaging machines, bag making packaging machines, etc. It is used by installing it in the conveyor type inspection process provided in the outline of various packaging machines such as type packaging machines, truck type packaging machines, bag making and packaging machines.
  • the laser type gas concentration meter 5 has a laser generator 2 having a transmitter 1 that emits a laser beam L of a specific wavelength, and receives the laser beam L oscillated from the transmitter 1.
  • the laser generating unit 2 and the laser receiving unit 4 are arranged on both sides of the packaging bag H so as to face each other.
  • the laser type gas concentration meter 5 utilizes infrared absorption spectroscopy using a semiconductor laser as a light source. The gas concentration is indicated by absorbing and measuring this.
  • the laser beam L emitted from the transmitter 1 of the laser generator 2 passes through the lens barrel 8 of the laser generator 2, enters the packaging bag H, and is received by the laser receiver 4. It is configured to be received by the device 3 .
  • the laser light L of a specific wavelength oscillated from the oscillator 1 is selected from the wavelength (natural frequency) range of 760 to 770 nm in the case of oxygen gas.
  • the laser light received by the receiver 3 of the laser light receiving unit 4 absorbs light within the package H based on the absorbance of the laser light. is configured to measure the gas concentration of oxygen gas remaining in the
  • the laser generator 2 has a controller 9 that sets the wavelength of the laser light L emitted from the transmitter 1 to a specific wavelength and adjusts the light intensity to a predetermined level.
  • the control unit 9 adjusts the wavelength of the laser light L output from a semiconductor laser element (not shown) to a specific wavelength unique to the specific gas to be measured so that the laser light L is emitted with a predetermined incident light intensity. to control amplification.
  • the laser light receiving unit 4 has a receiver 3 for receiving the laser light L transmitted through the packaging bag H, and a measuring unit 11 for measuring the gas concentration based on the received light signal from the receiver 3 via the light receiving cable 10. ing.
  • the receiver 3 has an element such as a photodiode (not shown) that converts the transmitted light intensity of the laser light L transmitted through the packaging bag H into an electrical transmitted light signal. As a result, the transmitted light intensity of the laser light L transmitted through the packaging bag H can be electrically processed.
  • a photodiode not shown
  • the measuring unit 11 calculates the transmittance based on the transmitted light signal related to the transmitted light intensity and the incident light signal related to the incident light intensity of the laser light L emitted from the oscillator 1, and measures the laser beam based on the transmittance.
  • the absorbance of light by the specific gas is obtained, and the concentration of the specific gas in the packaging bag H is measured based on the absorbance.
  • the laser generating section 2 and the laser receiving section 4 respectively have suction cup sections 6 and 7 capable of sucking the packaging bag H at their tip ends.
  • suction cup sections 6 and 7 capable of sucking the packaging bag H at their tip ends.
  • the laser generating unit 2 and the laser receiving unit 4 have suction cups 6 and 7 that can suck the packaging bag H at the tip portions of the lens barrels 8 and 12, respectively. have.
  • These suction cup portions 6 and 7 are connected to communicating passages 15 and 16 having suction holes 13 and 14 provided in lens barrel portions 8 and 12 via flow control valves (not shown) and pressure gauges (not shown).
  • a vacuum source (not shown) such as a vacuum pump is attached to each of them so that they can be sucked.
  • the communicating passages 15 and 16 and the laser paths 17 and 18 communicate with each other, and the suction by the suction cup portions 6 and 7 causes the laser light emitting portion 2 and the laser light receiving portion 4 to move.
  • the insides of the laser paths 17 and 18 are also configured to be in a vacuum atmosphere. As a result, the residual oxygen rate in the laser paths 17 and 18 can be set to approximately 0%, and the measurement accuracy can be further improved.
  • the suction cup portions 6 and 7 are arranged so as to suck the packaging bag H from obliquely above the packaging bag H arranged vertically in the thickness direction.
  • the suction cup portions 6 and 7 can be brought into closer contact with the object to be measured (packaging bag) H in response to the bulge of the packaging bag H, and a sufficient detection space is secured within the packaging bag H for measurement. Accuracy can be improved.
  • the suction cup portions 6 and 7 of this embodiment are provided at positions symmetrical with respect to the center line n in FIG. 3(a). That is, the suction cups 6 and 7 of this embodiment are arranged at the same angle and at the same height with respect to the center line n that extends vertically through the center of the packaging bag H. As shown in FIG. As a result, the measurement distance W of the packaging bag H between the laser emitting unit 2 and the laser receiving unit 4 is maintained constant.
  • the suction cup portion 6 provided at the tip of the laser generating portion 2 has a lens 19 that refracts the laser light L emitted from the transmitter 1 and causes the receiver 3 to receive the light. Thereby, the laser light L oscillated from the transmitter 1 is refracted to adjust the optical axis with the receiver 3 , so that the laser light L can be reliably received by the receiver 3 .
  • the laser generator 2 and the laser receiver 4 are fixed at fixed positions, but the present invention is not limited to this.
  • the scope of the present invention also includes those that are respectively attached to a reciprocating mechanism so that they can be relatively approached and separated from each other.
  • the laser generating unit 2 and the laser receiving unit 4 are configured to be movable in and out of the packaging bag H sequentially measured by a reciprocating mechanism such as a cylinder and a servomotor. After being moved by the reciprocating mechanism, the suction cups 6 and 7 suck the object to be measured (packaging bag H).
  • the separation distance between the two is measured in a state in which the packaging bags H are sucked by the pair of suction cups 6 and 7, and the measured value at the separation distance is calculated.
  • the concentration of the specific gas in the packaging bag H may be measured by calculating and correcting a numerical value converted into a reference constant distance.
  • the separation distance is calculated based on, for example, the moving distance of the paired suction cup portions by the reciprocating mechanism, etc.
  • the movement of the pair of suction cups corresponding to different widths of the object to be measured (packaging bag H) is performed by detecting the width of the object to be measured (packaging bag H) by a position sensor or the like, and pairing is performed based on the detected value.
  • a method of reciprocating the suction cup portions 6 and 7 or a method of using a servomotor is suitable.
  • the suction cup portions 6 and 7 have bag guide plates 20 and 21, respectively.
  • the packaging bag H is deformed along the bag guide plate 20 by the suction of the suction cups 6 and 7, thereby securing a sufficient detection space in the packaging bag H and improving the measurement accuracy. can.
  • the bag guide plates 20 and 21 of this embodiment are formed of rectangular plate-like bodies, and near the center of the bag guide plates 20 and 21, a circular Through holes 22 and 23 are provided, respectively, and small-diameter portions 24 and 25 provided on the tip side of the suction cup portions 6 and 7 are positioned in the through holes 22 and 23, respectively.
  • Bag guide plates 20 and 21 are attached to the ends of the .
  • the bag guide plates 20 and 21 are arranged to extend in a direction perpendicular to the axial direction of the suction cup portions 6 and 7 or the barrel portions 8 and 12 . As the suction cups 6 and 7 are sucked, the packaging bag H is pulled along the inner side surfaces 20a and 21b of the bag guide plates 20 and 21, thereby ensuring a sufficient detection space within the packaging bag H. is configured as
  • the method for measuring the gas concentration of a packaging bag according to the present invention is, for example, a method for measuring the gas concentration of a packaging bag in the gas concentration measuring apparatus G for the packaging bag described above. 2 and a laser light receiving part 4 having a receiver 3 for receiving the laser light oscillated from the transmitter 1.
  • the laser generating part 2 and the laser light receiving part 2 are arranged on both sides of the packaging bag H facing each other.
  • Measurement of the gas concentration of a packaging bag characterized in that the tip of the laser generating part 2 and the tip of the laser receiving part 4 and the packaging bag H are sealed (adhered) with each other by possible suction cups 6 and 7.
  • the same components as those of the gas concentration measuring device G for packaging bags described above are assigned the same reference numerals, and descriptions thereof are omitted.
  • the adhesion between the tip of the laser emitting part 2 and the tip of the laser receiving part 4 and the object to be measured (packaging bag H) can be secured, and a sufficient detection space can be secured in the packaging bag H to improve the measurement accuracy. can be improved.
  • G Gas concentration measuring device for packaging bag S Object to be packaged H Packaging bag 1 Transmitter 2 Laser generator 3 Receiver 4 Laser receiver 5 Laser type gas densitometer 6, 7 Suction cup 8 Lens barrel 9 Control unit 10 Light receiving cable 11 Measurement part 12 Lens barrel parts 13, 14 Suction holes 15, 16 Communication path 18 Laser path 19 Lenses 20, 21 Bag guide plates 20a, 21a Inner surfaces 22, 23 Through holes 24, 25 Small diameter part

Abstract

[Problem] To provide a packaging bag gas concentration measuring device and a packaging bag gas concentration measuring method with which it is possible to ensure hermetic attachment between a tip end of a laser light emitting portion and a tip end of a laser light receiving portion, and an object being measured (packaging bag), and with which it is possible to improve measuring accuracy by ensuring a sufficient detection space inside the bag. [Solution] A packaging bag gas concentration measuring device G measures a concentration of a specific gas in a packaging bag H which is filled with a packaged object S and which has been subjected to gas replacement, wherein: the gas concentration measuring device G includes a laser type gas concentration meter 5 which is provided with a laser generating unit 2 including a transmitter 1 for radiating laser light having a specific wavelength, and a laser light receiving unit 4 including a receiver 3 for receiving the laser light that has been caused to oscillate from the transmitter 1, and in which the laser generating unit 2 and the laser light receiving unit 4 are disposed facing both sides of the packaging bag H; and the laser generating unit 2 and the laser light receiving unit 4 include, at tip ends thereof, suction pad units 6, 7 capable of suction-attaching the packaging bag H.

Description

包装袋のガス濃度測定装置および包装袋のガス濃度測定方法Packaging bag gas concentration measuring device and packaging bag gas concentration measuring method
　本発明は、包装袋内の特定ガスの濃度を測定することができる包装袋のガス濃度測定装置および包装袋のガス濃度測定方法に関する。 The present invention relates to a packaging bag gas concentration measuring device and a packaging bag gas concentration measuring method capable of measuring the concentration of a specific gas in a packaging bag.
　被包装物が特に食品の場合、保存期間や賞味期限を長くするために、包装時に包装袋内に残留する空気を排除して窒素、二酸化炭素等の不活性ガスを充填するガス置換包装が行われている。例えば特許文献１には、包装袋内に被包装物を投入すると共に、包装袋に挿入したノズルから不活性ガスを充填して、不活性ガスと包装袋内の酸素との置換作用を行なう不活性ガス充填方法が開示されている。 Especially when the items to be packaged are foods, in order to extend the shelf life and expiration date, gas replacement packaging is performed to remove residual air from the packaging bag and fill it with an inert gas such as nitrogen or carbon dioxide. It is For example, in Patent Document 1, an inert gas is filled from a nozzle inserted into a packaging bag while an object to be packaged is put into the packaging bag, so that the inert gas replaces oxygen in the packaging bag. An active gas filling method is disclosed.
　そして、製品検査において、被包装物を包装した包装袋内に残存する酸素濃度を計測する方法として、本件出願人が、例えば特許文献２にレーザー式ガス濃度測定装置による計測方法を提案している。 As a method for measuring the concentration of oxygen remaining in a packaging bag in which an object to be packaged is packed in a product inspection, the applicant of the present application has proposed a measurement method using a laser gas concentration measuring device, for example, in Patent Document 2. .
　ところで、このレーザー式ガス濃度測定装置による計測方法は、大半のガス分子が特定波長の光を吸収するという性質を利用して、一定距離内のガス分子の数を計測しガス濃度を測定するものである。そのため、レーザー式ガス濃度測定装置のレーザー発光部の先端やレーザー受光部の先端と被測定物（包装袋）との間に間隙が存在しないように密着させることが重要となる。 By the way, the measurement method using this laser type gas concentration measuring device utilizes the property that most gas molecules absorb light of a specific wavelength, and measures the gas concentration by measuring the number of gas molecules within a certain distance. is. For this reason, it is important that the tip of the laser emitting part or the tip of the laser receiving part of the laser type gas concentration measuring device and the object to be measured (packaging bag) are brought into close contact with each other so that there is no gap.
　しかし、被包装物を包装した包装容器が袋の場合、上記密着性が不十分となったり、包装袋内の検知空間が十分に確保できず、測定精度が劣化することがあった。 However, when the packaging container used to package the item to be packaged is a bag, the above-mentioned adhesion may be insufficient, or the detection space inside the packaging bag may not be sufficiently secured, resulting in deterioration in measurement accuracy.
特許第３７４２０４２号公報Japanese Patent No. 3742042 特許第５１２４７１９号公報Japanese Patent No. 5124719
　そこで、本発明の課題は、レーザー発光部の先端やレーザー受光部の先端と被測定物（包装袋）との密着性を確保できると共に、袋内に十分な検知空間を確保して測定精度を向上させることができる包装袋のガス濃度測定装置および包装袋のガス濃度測定方法を提供することにある。 Therefore, an object of the present invention is to ensure the adhesion between the tip of the laser emitting part and the tip of the laser receiving part and the object to be measured (packaging bag), and to secure a sufficient detection space in the bag to improve the measurement accuracy. An object of the present invention is to provide a packaging bag gas concentration measuring device and a packaging bag gas concentration measuring method that can be improved.
　上記課題を解決するものは、被包装物を充填しガス置換して包装された包装袋内の特定ガスの濃度を測定する包装袋のガス濃度測定装置であって、特定波長のレーザー光を照射する発信器を有するレーザー発生部と、前記発信器から発振されるレーザー光を受光する受信器を有するレーザー受光部とを備え、前記レーザー発生部と前記レーザー受光部とが前記包装袋の両側に対向して配されるレーザー式ガス濃度計を有し、前記レーザー発生部および前記レーザー受光部は、それぞれの先端部と前記包装袋とを密閉（密着）させるための吸着可能な吸盤部を有していることを特徴とする包装袋のガス濃度測定装置である（請求項１）。前記吸盤部は、袋ガイド板を有していることが好ましい（請求項２）。前記吸盤部は、厚さ方向を上下に配置された前記包装袋に対して斜め上方から前記包装袋を吸引するように配されていることが好ましい（請求項３）。前記レーザー発生部の先端に設けられた吸盤部は、前記発信器から発振されるレーザー光を屈折させて前記受信器に受光させるレンズを有していることが好ましい（請求項４）。 To solve the above problems, there is provided a gas concentration measuring device for a packaging bag which measures the concentration of a specific gas in a packaging bag filled with an object to be packaged and replaced with gas, and is irradiated with a laser beam of a specific wavelength. and a laser light receiving part having a receiver for receiving the laser light emitted from the transmitter, wherein the laser generating part and the laser light receiving part are arranged on both sides of the packaging bag. It has a laser type gas concentration meter arranged facing each other, and the laser generating part and the laser receiving part each have a suction cup part that can be sucked for sealing (adhering) the respective tip parts and the packaging bag. (Claim 1). It is preferable that the suction cup portion has a bag guide plate (Claim 2). It is preferable that the suction cup portion is arranged so as to suck the packaging bag from diagonally above the packaging bag arranged vertically in the thickness direction (Claim 3). It is preferable that the sucker provided at the tip of the laser generator has a lens that refracts the laser beam emitted from the transmitter and causes the receiver to receive the laser beam (claim 4).
　また、上記課題を解決するものは、特定波長のレーザー光を照射する発信器を有するレーザー発生部と、前記発信器から発振されるレーザー光を受光する受信器を有するレーザー受光部とを備え、前記レーザー発生部と前記レーザー受光部とが包装袋の両側に対向して配されるレーザー式ガス濃度計を有したガス濃度測定装置における包装袋のガス濃度測定方法であって、前記レーザー発生部の先端部および前記レーザー受光部の先端部に設けられた吸着可能な吸盤部により、前記レーザー発生部の先端部および前記レーザー受光部の先端部と前記包装袋とをそれぞれ密閉（密着）させて測定することを特徴とする包装袋のガス濃度測定方法である（請求項５）。 Further, what solves the above problems includes a laser generator having a transmitter that emits laser light of a specific wavelength, and a laser light receiving section that has a receiver that receives the laser light oscillated from the transmitter, A method for measuring the gas concentration of a packaging bag in a gas concentration measuring device having a laser type gas concentration meter in which the laser generating section and the laser receiving section are arranged to face each other on both sides of the packaging bag, the laser generating section comprising: The tip of the laser generator and the tip of the laser receiver are sealed (adhered) to the packaging bag by suction cups provided at the tip of the laser generator and the tip of the laser receiver, respectively. A method for measuring the gas concentration of a packaging bag (claim 5).
　請求項１に記載の包装袋のガス濃度測定装置によれば、レーザー発光部の先端やレーザー受光部の先端と被測定物（包装袋）との密着性を確保できると共に、包装袋内に十分な検知空間を確保して測定精度を向上させることができる。
　請求項２に記載の包装袋のガス濃度測定装置によれば、吸盤部の吸引に伴って袋ガイド板に沿った形状に包装袋を変形させることで包装袋内に十分な検知空間を確保して測定精度を向上させることができる。
　請求項３に記載の包装袋のガス濃度測定装置によれば、包装袋の膨らみに対応して、吸盤部をより被測定物（包装袋）に密着させることができると共に、袋内に十分な検知空間を確保して測定精度を向上させることができる。
　請求項４に記載の包装袋のガス濃度測定装置によれば、発信器から発振されるレーザー光を屈折させて受信器との光軸を調整し、レーザー光を受信器に確実に受光させることができる。
　請求項５に記載の包装袋のガス濃度測定方法によれば、レーザー発光部の先端やレーザー受光部の先端と被測定物（包装袋）との密着性を確保できると共に、包装袋内に十分な検知空間を確保して測定精度を向上させることができる。 According to the gas concentration measuring device for a packaging bag according to claim 1, it is possible to ensure the close contact between the tip of the laser emitting part or the tip of the laser receiving part and the object to be measured (packaging bag), and the inside of the packaging bag is sufficient. It is possible to secure a sufficient detection space and improve the measurement accuracy.
According to the gas concentration measuring device for a packaging bag described in claim 2, a sufficient detection space is ensured in the packaging bag by deforming the packaging bag into a shape along the bag guide plate as the suction cup part sucks. can improve measurement accuracy.
According to the gas concentration measuring device for a packaging bag according to claim 3, the sucker portion can be brought into closer contact with the object to be measured (packaging bag) in response to the bulging of the packaging bag, and sufficient It is possible to secure the detection space and improve the measurement accuracy.
According to the gas concentration measuring device for packaging bags according to claim 4, the laser beam oscillated from the transmitter is refracted to adjust the optical axis with the receiver, and the laser beam is reliably received by the receiver. can be done.
According to the method for measuring the gas concentration of a packaging bag according to claim 5, it is possible to ensure the adhesion between the tip of the laser emitting part or the tip of the laser receiving part and the object to be measured (packaging bag), and the inside of the packaging bag is sufficient. It is possible to secure a sufficient detection space and improve the measurement accuracy.
本発明の包装袋のガス測定装置の一実施例を説明するための正面概略図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic front view for explaining an embodiment of a packaging bag gas measuring device of the present invention; 図１に示した包装袋のガス測定装置を説明するための部分拡大縦断面図である。FIG. 2 is a partially enlarged longitudinal sectional view for explaining the gas measuring device for the packaging bag shown in FIG. 1; 図１に示した包装袋のガス測定装置の袋ガイドを説明するための説明図であり、（ａ）は正面概略図であり、（ｂ）は左側面図であり、（ｃ）は平面図である。FIG. 2 is an explanatory diagram for explaining a bag guide of the gas measuring device for the packaging bag shown in FIG. 1, where (a) is a schematic front view, (b) is a left side view, and (c) is a plan view; is.
　本発明では、特定波長のレーザー光を照射する発信器１を有するレーザー発生部２と、発信器１から発振されるレーザー光を受光する受信器３を有するレーザー受光部４とを備え、レーザー発生部２およびレーザー受光部４が、先端部に包装袋を吸着可能な吸盤部６，７を有していることで、レーザー発光部２の先端やレーザー受光部４の先端と被測定物（包装袋）との密着性を確保できると共に、包装袋内に十分な検知空間を確保して測定精度を向上させることができる包装袋のガス濃度測定装置Ｇを実現した。 In the present invention, a laser generator 2 having a transmitter 1 for irradiating a laser beam of a specific wavelength and a laser receiver 4 having a receiver 3 for receiving the laser beam oscillated from the transmitter 1 are provided. Since the part 2 and the laser light receiving part 4 have sucker parts 6 and 7 capable of sucking the packaging bag at the tip part, the tip of the laser emitting part 2 and the tip of the laser light receiving part 4 can be connected to the object to be measured (packaging). A gas concentration measuring device G for a packaging bag has been realized that can ensure close contact with the packaging bag and can secure a sufficient detection space in the packaging bag to improve the measurement accuracy.
　本発明の包装袋のガス濃度測定装置を図１ないし図３に示した一実施例を用いて説明する。
　この実施例の包装袋のガス濃度測定装置Ｇは、被包装物Ｓを充填しガス置換して包装された包装袋Ｈ（食品を充填した包装袋に限定されず、例えば医療用輸液を充填した輸液バッグなどの食品以外を充填した包装袋も含む。）内の特定ガスの濃度を測定する包装袋のガス濃度測定装置であって、特定波長のレーザー光を照射する発信器１を有するレーザー発生部２と、発信器１から発振されるレーザー光を受光する受信器３を有するレーザー受光部４とを備え、レーザー発生部２とレーザー受光部４とが包装袋Ｈの両側に対向して配されるレーザー式ガス濃度計５を有し、レーザー発生部２およびレーザー受光部４は、先端部に包装袋Ｈを吸着可能な吸盤部６，７を有している。以下、各構成について順次詳述する。 A gas concentration measuring device for packaging bags according to the present invention will be described with reference to an embodiment shown in FIGS. 1 to 3. FIG.
The gas concentration measuring device G for a packaging bag of this embodiment is a packaging bag H (not limited to a packaging bag filled with food, but filled with a medical infusion solution, for example, filled with an object S to be packaged and replaced with gas). A gas concentration measuring device for a packaging bag that measures the concentration of a specific gas in a packaging bag filled with something other than food such as an infusion bag, and has a transmitter 1 that irradiates a laser beam of a specific wavelength. and a laser receiving part 4 having a receiver 3 for receiving laser light emitted from the transmitter 1. The laser generating part 2 and the laser receiving part 4 are arranged on both sides of the packaging bag H so as to face each other. The laser generating unit 2 and the laser receiving unit 4 have suction cups 6 and 7 capable of sucking the packaging bag H at their distal ends. Each configuration will be described in detail below.
　この実施例のガス濃度測定装置被包装物Ｇは、窒素、二酸化炭素等の不活性ガスによりガス置換をして包装された包装袋Ｈ内の特定ガスである酸素濃度をレーザー式ガス濃度計５によって測定するものであり、単独の測定装置として使用され、または、ロータリー式包装機、トラック式包装機、製袋包装機等の各種包装機内の検査工程に設置して使用され、さらには、ロータリー式包装機、トラック式包装機、製袋包装機等の各種包装機のアウトラインに設けられたコンベア式検査工程に設置して使用される。 The gas concentration measuring apparatus of this embodiment uses a laser type gas densitometer 5 to measure the concentration of oxygen, which is a specific gas, in a packaging bag H packed after gas replacement with an inert gas such as nitrogen or carbon dioxide. It is used as a single measuring device, or installed in the inspection process in various packaging machines such as rotary packaging machines, truck packaging machines, bag making packaging machines, etc. It is used by installing it in the conveyor type inspection process provided in the outline of various packaging machines such as type packaging machines, truck type packaging machines, bag making and packaging machines.
　レーザー式ガス濃度計５は、図１または図２に示すように、特定波長のレーザー光Ｌを照射する発信器１を有するレーザー発生部２と、発信器１から発振されるレーザー光Ｌを受光する受信器３を有するレーザー受光部４とを備えており、レーザー発生部２とレーザー受光部４とが包装袋Ｈの両側に対向して配されるように構成されている。 As shown in FIG. 1 or FIG. 2, the laser type gas concentration meter 5 has a laser generator 2 having a transmitter 1 that emits a laser beam L of a specific wavelength, and receives the laser beam L oscillated from the transmitter 1. The laser generating unit 2 and the laser receiving unit 4 are arranged on both sides of the packaging bag H so as to face each other.
　レーザー式ガス濃度計５は、半導体レーザーを光源とする赤外線吸収分光法を利用するもので、測定対象の分子（測定ガス：この実施例では酸素ガス）に固有周波数の光を与えると光エネルギーを吸収し、これを測定することによりガス濃度の表示を行なうものである。 The laser type gas concentration meter 5 utilizes infrared absorption spectroscopy using a semiconductor laser as a light source. The gas concentration is indicated by absorbing and measuring this.
　具体的には、レーザー発生部２の発信器１から発振されるレーザー光Ｌは、レーザー発生部２の鏡筒部８内を通過して包装袋Ｈ内に侵入し、レーザー受光部４の受信器３に受光されるように構成されている。発信器１から発振される特定波長のレーザー光Ｌは、酸素ガスの場合、波長（固有周波数）７６０～７７０ｎｍの範囲から選択される。そして、特定波長のレーザー光Ｌが、包装袋Ｈ内に残留している酸素ガスによって吸収されると、レーザー受光部４の受信器３に受光されたレーザー光の吸光度に基づいて包装体Ｈ内に残留している酸素ガスのガス濃度が測定されるように構成されている。 Specifically, the laser beam L emitted from the transmitter 1 of the laser generator 2 passes through the lens barrel 8 of the laser generator 2, enters the packaging bag H, and is received by the laser receiver 4. It is configured to be received by the device 3 . The laser light L of a specific wavelength oscillated from the oscillator 1 is selected from the wavelength (natural frequency) range of 760 to 770 nm in the case of oxygen gas. Then, when the laser light L of the specific wavelength is absorbed by the oxygen gas remaining in the packaging bag H, the laser light received by the receiver 3 of the laser light receiving unit 4 absorbs light within the package H based on the absorbance of the laser light. is configured to measure the gas concentration of oxygen gas remaining in the
　レーザー発生部２は、発信器１から発振されるレーザー光Ｌの波長を特定の波長に設定し、所定の光強度に調整する制御部９を有している。制御部９は、半導体レーザー素子（図示しない）から出力されるレーザー光Ｌの波長を測定対象の特定ガス固有の特定波長に調整して、レーザー光Ｌが所定の入射光強度で射出されるように増幅制御する。 The laser generator 2 has a controller 9 that sets the wavelength of the laser light L emitted from the transmitter 1 to a specific wavelength and adjusts the light intensity to a predetermined level. The control unit 9 adjusts the wavelength of the laser light L output from a semiconductor laser element (not shown) to a specific wavelength unique to the specific gas to be measured so that the laser light L is emitted with a predetermined incident light intensity. to control amplification.
　レーザー受光部４は、包装袋Ｈを透過したレーザー光Ｌを受光する受信器３と、受信器３からの受光ケーブル１０を介する受光信号に基づいてガス濃度を測定する測定部１１とを有している。 The laser light receiving unit 4 has a receiver 3 for receiving the laser light L transmitted through the packaging bag H, and a measuring unit 11 for measuring the gas concentration based on the received light signal from the receiver 3 via the light receiving cable 10. ing.
　受信器３は、包装袋Ｈを透過したレーザー光Ｌの透過光強度を電気的な透過光信号に変換する素子、例えばフォトダイオード（図示略）を有している。これによって、包装袋Ｈを透過したレーザー光Ｌの透過光強度を電気的に処理することができる。 The receiver 3 has an element such as a photodiode (not shown) that converts the transmitted light intensity of the laser light L transmitted through the packaging bag H into an electrical transmitted light signal. As a result, the transmitted light intensity of the laser light L transmitted through the packaging bag H can be electrically processed.
　測定部１１は、透過光強度に係る透過光信号と、発信器１から発振されたレーザー光Ｌの入射光強度に係る入射光信号に基づいて透過率を計算し、当該透過率に基づいてレーザー光の特定ガスによる吸光度を求め、当該吸光度に基づいて包装袋Ｈ内の特定ガスの濃度を測定するように構成されている。 The measuring unit 11 calculates the transmittance based on the transmitted light signal related to the transmitted light intensity and the incident light signal related to the incident light intensity of the laser light L emitted from the oscillator 1, and measures the laser beam based on the transmittance. The absorbance of light by the specific gas is obtained, and the concentration of the specific gas in the packaging bag H is measured based on the absorbance.
　そして、レーザー発生部２およびレーザー受光部４は、先端部に包装袋Ｈを吸着可能な吸盤部６，７をそれぞれ有している。これにより、レーザー発光部２の先端やレーザー受光部４の先端と被測定物（包装袋Ｈ）との密着性または密閉性を確保（隙間なく付着させ空気を入れない状態を確保）できると共に、包装袋Ｈ内に十分な検知空間を確保して測定精度を向上させることができる。 The laser generating section 2 and the laser receiving section 4 respectively have suction cup sections 6 and 7 capable of sucking the packaging bag H at their tip ends. As a result, the adhesion or airtightness between the tip of the laser emitting part 2 or the tip of the laser receiving part 4 and the object to be measured (packaging bag H) can be ensured (a state in which air is not introduced by adhering without gaps) can be ensured. A sufficient detection space can be secured in the packaging bag H to improve the measurement accuracy.
　具体的には、レーザー発生部２およびレーザー受光部４は、図１または図２に示すように、鏡筒部８，１２の先端部に包装袋Ｈを吸着可能な吸盤部６，７をそれぞれ有している。これらの吸盤部６，７は、鏡筒部８，１２に設けられた吸引穴１３，１４を備えた連通路１５，１６に流量調整弁（図示しない）や圧力計（図示しない）を介して真空ポンプ等の真空源（図示しない）が取り付けられてそれぞれ吸引可能に構成されている。 Specifically, as shown in FIG. 1 or 2, the laser generating unit 2 and the laser receiving unit 4 have suction cups 6 and 7 that can suck the packaging bag H at the tip portions of the lens barrels 8 and 12, respectively. have. These suction cup portions 6 and 7 are connected to communicating passages 15 and 16 having suction holes 13 and 14 provided in lens barrel portions 8 and 12 via flow control valves (not shown) and pressure gauges (not shown). A vacuum source (not shown) such as a vacuum pump is attached to each of them so that they can be sucked.
　なお、この実施例のレーザー式ガス濃度計５は、連通路１５，１６とレーザー経路１７，１８とがそれぞれ連通し、吸盤部６，７による吸引により、レーザー発光部２とレーザー受光部４のレーザー経路１７，１８内も真空雰囲気下となるように構成されている。これにより、レーザー経路１７，１８内の残存酸素率をほぼ０％として測定精度をより高めることができる。 In the laser type gas concentration meter 5 of this embodiment, the communicating passages 15 and 16 and the laser paths 17 and 18 communicate with each other, and the suction by the suction cup portions 6 and 7 causes the laser light emitting portion 2 and the laser light receiving portion 4 to move. The insides of the laser paths 17 and 18 are also configured to be in a vacuum atmosphere. As a result, the residual oxygen rate in the laser paths 17 and 18 can be set to approximately 0%, and the measurement accuracy can be further improved.
　また、この実施例のレーザー式ガス濃度計５は、吸盤部６，７が、厚さ方向を上下に配置された包装袋Ｈに対して斜め上方から包装袋Ｈを吸引するように配されている。これにより、包装袋Ｈの膨らみに対応して、吸盤部６，７をより被測定物（包装袋）Ｈに密着させることができると共に、包装袋Ｈ内に十分な検知空間を確保して測定精度が向上させることができる。 Further, in the laser type gas concentration meter 5 of this embodiment, the suction cup portions 6 and 7 are arranged so as to suck the packaging bag H from obliquely above the packaging bag H arranged vertically in the thickness direction. there is As a result, the suction cup portions 6 and 7 can be brought into closer contact with the object to be measured (packaging bag) H in response to the bulge of the packaging bag H, and a sufficient detection space is secured within the packaging bag H for measurement. Accuracy can be improved.
　具体的には、この実施例の吸盤部６，７は、図３（ａ）中、中心線ｎに対して線対称の位置に設けられている。すなわち、この実施例の吸盤部６，７は、包装袋Ｈの中央を縦断し垂直方向に延在する中心線ｎに対して、同一角度で、かつ同一高さの位置に配されている。これにより、レーザー発光部２とレーザー受光部４間における包装袋Ｈの測定距離Ｗが一定に保持されるように構成されている。 Specifically, the suction cup portions 6 and 7 of this embodiment are provided at positions symmetrical with respect to the center line n in FIG. 3(a). That is, the suction cups 6 and 7 of this embodiment are arranged at the same angle and at the same height with respect to the center line n that extends vertically through the center of the packaging bag H. As shown in FIG. As a result, the measurement distance W of the packaging bag H between the laser emitting unit 2 and the laser receiving unit 4 is maintained constant.
　レーザー発生部２の先端に設けられた吸盤部６は、発信器１から発振されるレーザー光Ｌを屈折させて受信器３に受光させるレンズ１９を有している。これにより、発信器１から発振されるレーザー光Ｌを屈折させて受信器３との光軸を調整し、レーザー光Ｌを受信器３に確実に受光させることができる。 The suction cup portion 6 provided at the tip of the laser generating portion 2 has a lens 19 that refracts the laser light L emitted from the transmitter 1 and causes the receiver 3 to receive the light. Thereby, the laser light L oscillated from the transmitter 1 is refracted to adjust the optical axis with the receiver 3 , so that the laser light L can be reliably received by the receiver 3 .
　なお、この実施例のガス濃度測定装置Ｇは、レーザー発生部２とレーザー受光部４が定位置に固定されているが、これに限定されるものではなく、レーザー発生部２とレーザー受光部４間は、それぞれ往復動機構に取り付けられて相対的に接近及び離隔可能に構成されたものも本発明の範疇に包含される。具体的には、レーザー発生部２とレーザー受光部４をそれぞれ、シリンダーやサーボモーターなどの往復動機構により、順次測定される包装袋Ｈに対して内外に移動可能に構成する。そして、往復動機構により移動した後、吸盤部６，７にて被測定物（包装袋Ｈ）を吸引するように構成する。 In the gas concentration measuring device G of this embodiment, the laser generator 2 and the laser receiver 4 are fixed at fixed positions, but the present invention is not limited to this. The scope of the present invention also includes those that are respectively attached to a reciprocating mechanism so that they can be relatively approached and separated from each other. Specifically, the laser generating unit 2 and the laser receiving unit 4 are configured to be movable in and out of the packaging bag H sequentially measured by a reciprocating mechanism such as a cylinder and a servomotor. After being moved by the reciprocating mechanism, the suction cups 6 and 7 suck the object to be measured (packaging bag H).
　順次測定される包装袋Ｈが異なる幅を有する場合は、対となる吸盤部６，７により包装袋Ｈを吸引させた状態で、両者間の離隔距離を測定し、当該離隔距離における測定値から基準となる一定距離に換算した数値を算出して補正することにより包装袋Ｈ内の特定ガスの濃度を測定してもよい。 When the packaging bags H to be measured sequentially have different widths, the separation distance between the two is measured in a state in which the packaging bags H are sucked by the pair of suction cups 6 and 7, and the measured value at the separation distance is calculated. The concentration of the specific gas in the packaging bag H may be measured by calculating and correcting a numerical value converted into a reference constant distance.
　具体的には、離隔距離は、例えば往復動機構による対となる吸盤部の移動距離などを基にして算出され、離隔距離：測定値＝基準となる一定距離：ガス濃度Ｘ（換算して補正された数値）から、ガス濃度Ｘ（ガス濃度Ｘ＝測定値×基準となる一定距離／離隔距離）の数値が求められ表示されるように構成されている。これにより、包装袋Ｈによってレーザー発生部とレーザー受光部間における被測定物（包装袋Ｈ）の幅が異なる場合でも、異なったままガス濃度を高精度で測定することができる。なお、被測定物（包装袋Ｈ）の異なる幅に対応した対となる吸盤部の移動は、位置センサなどにより被測定物（包装袋Ｈ）の幅を検出し、その検出値に基づいて対となる吸盤部６，７を往復動させる方法やサーボモーターを使用する方法などが好適である。 Specifically, the separation distance is calculated based on, for example, the moving distance of the paired suction cup portions by the reciprocating mechanism, etc. Separation distance: measured value = reference constant distance: gas concentration X (corrected by conversion The numerical value of the gas concentration X (gas concentration X=measured value×reference fixed distance/separation distance) is obtained from the obtained numerical value) and displayed. As a result, even when the width of the object to be measured (packaging bag H) between the laser generating portion and the laser receiving portion differs depending on the packaging bag H, the gas concentration can be measured with high accuracy while keeping the width different. The movement of the pair of suction cups corresponding to different widths of the object to be measured (packaging bag H) is performed by detecting the width of the object to be measured (packaging bag H) by a position sensor or the like, and pairing is performed based on the detected value. A method of reciprocating the suction cup portions 6 and 7 or a method of using a servomotor is suitable.
　吸盤部６，７は、袋ガイド板２０，２１をそれぞれ有している。これにより、吸盤部６，７の吸引に伴って袋ガイド板２０に沿った形状に包装袋Ｈを変形させることで包装袋Ｈ内に十分な検知空間を確保して測定精度が向上させることができる。 The suction cup portions 6 and 7 have bag guide plates 20 and 21, respectively. As a result, the packaging bag H is deformed along the bag guide plate 20 by the suction of the suction cups 6 and 7, thereby securing a sufficient detection space in the packaging bag H and improving the measurement accuracy. can.
　具体的には、この実施例の袋ガイド板２０，２１は、図３に示すように、矩形の板状体にて構成されており、袋ガイド板２０，２１の中央付近には、円形の貫通穴２２，２３がそれぞれ設けられ、吸盤部６，７の先端側に設けられた細径部２４，２５を貫通穴２２，２３内にそれぞれ位置させて装着することで、吸盤部６，７の先端部に袋ガイド板２０，２１が取り付けられている。また、袋ガイド板２０，２１は、吸盤部６，７または鏡筒部８，１２の軸方向に直交する方向に延在するよう配されている。そして、吸盤部６，７の吸引に伴い、袋ガイド板２０，２１の内側面２０ａ，２１ｂに沿って包装袋Ｈが引張されることにより、包装袋Ｈ内に十分な検知空間が確保されるように構成されている。 Specifically, as shown in FIG. 3, the bag guide plates 20 and 21 of this embodiment are formed of rectangular plate-like bodies, and near the center of the bag guide plates 20 and 21, a circular Through holes 22 and 23 are provided, respectively, and small- diameter portions 24 and 25 provided on the tip side of the suction cup portions 6 and 7 are positioned in the through holes 22 and 23, respectively. Bag guide plates 20 and 21 are attached to the ends of the . Moreover, the bag guide plates 20 and 21 are arranged to extend in a direction perpendicular to the axial direction of the suction cup portions 6 and 7 or the barrel portions 8 and 12 . As the suction cups 6 and 7 are sucked, the packaging bag H is pulled along the inner side surfaces 20a and 21b of the bag guide plates 20 and 21, thereby ensuring a sufficient detection space within the packaging bag H. is configured as
　また、本発明の包装袋のガス濃度測定方法は、例えば上記包装袋のガス濃度測定装置Ｇにおける包装袋のガス濃度測定方法であり、特定波長のレーザー光を照射する発信器１を有するレーザー発生部２と、発信器１から発振されるレーザー光を受光する受信器３を有するレーザー受光部４とを備え、レーザー発生部２とレーザー受光部２とが包装袋Ｈの両側に対向して配されるレーザー式ガス濃度計５を有したガス濃度測定装置Ｇにおける包装袋のガス濃度測定方法であって、記レーザー発生部２の先端部およびレーザー受光部４の先端部にそれぞれ設けられた吸着可能な吸盤部６，７により、レーザー発生部２の先端部およびレーザー受光部４の先端部と包装袋Ｈとをそれぞれ密閉（密着）させて測定することを特徴とする包装袋のガス濃度測定方法である。前述した包装袋のガス濃度測定装置Ｇと同一構成部分については同一符号を付し説明を省略する。これにより、レーザー発光部２の先端やレーザー受光部４の先端と被測定物（包装袋Ｈ）との密着性を確保できると共に、包装袋Ｈ内に十分な検知空間を確保して測定精度を向上させることができる。 The method for measuring the gas concentration of a packaging bag according to the present invention is, for example, a method for measuring the gas concentration of a packaging bag in the gas concentration measuring apparatus G for the packaging bag described above. 2 and a laser light receiving part 4 having a receiver 3 for receiving the laser light oscillated from the transmitter 1. The laser generating part 2 and the laser light receiving part 2 are arranged on both sides of the packaging bag H facing each other. A method for measuring the gas concentration of a packaging bag in a gas concentration measuring apparatus G having a laser type gas concentration meter 5, wherein the suction is provided at the tip of the laser generating unit 2 and the tip of the laser receiving unit 4, respectively. Measurement of the gas concentration of a packaging bag, characterized in that the tip of the laser generating part 2 and the tip of the laser receiving part 4 and the packaging bag H are sealed (adhered) with each other by possible suction cups 6 and 7. The method. The same components as those of the gas concentration measuring device G for packaging bags described above are assigned the same reference numerals, and descriptions thereof are omitted. As a result, the adhesion between the tip of the laser emitting part 2 and the tip of the laser receiving part 4 and the object to be measured (packaging bag H) can be secured, and a sufficient detection space can be secured in the packaging bag H to improve the measurement accuracy. can be improved.
Ｇ　　　　　　　包装袋のガス濃度測定装置
Ｓ　　　　　　　被包装物
Ｈ　　　　　　　包装袋
１　　　　　　　発信器
２　　　　　　　レーザー発生部
３　　　　　　　受信器
４　　　　　　　レーザー受光部
５　　　　　　　レーザー式ガス濃度計
６，７　　　　　吸盤部
８　　　　　　　鏡筒部
９　　　　　　　制御部
１０　　　　　　受光ケーブル
１１　　　　　　測定部
１２　　　　　　鏡筒部
１３，１４　　　吸引穴
１５，１６　　　連通路
１８　　　　　　レーザー経路
１９　　　　　　レンズ
２０，２１　　　袋ガイド板
２０ａ，２１ａ　内側面
２２，２３　　　貫通穴
２４，２５　　　細径部 G Gas concentration measuring device for packaging bag S Object to be packaged H Packaging bag 1 Transmitter 2 Laser generator 3 Receiver 4 Laser receiver 5 Laser type gas densitometer 6, 7 Suction cup 8 Lens barrel 9 Control unit 10 Light receiving cable 11 Measurement part 12 Lens barrel parts 13, 14 Suction holes 15, 16 Communication path 18 Laser path 19 Lenses 20, 21 Bag guide plates 20a, 21a Inner surfaces 22, 23 Through holes 24, 25 Small diameter part

Claims (5)

  1. 被包装物を充填しガス置換して包装された包装袋内の特定ガスの濃度を測定する包装袋のガス濃度測定装置であって、特定波長のレーザー光を照射する発信器を有するレーザー発生部と、前記発信器から発振されるレーザー光を受光する受信器を有するレーザー受光部とを備え、前記レーザー発生部と前記レーザー受光部とが前記包装袋の両側に対向して配されるレーザー式ガス濃度計を有し、
    前記レーザー発生部および前記レーザー受光部は、それぞれの先端部と前記包装袋とを密閉させるための吸着可能な吸盤部を有していることを特徴とする包装袋のガス濃度測定装置。     A gas concentration measuring device for a packaging bag that measures the concentration of a specific gas in a packaging bag filled with an object to be packaged and replaced with gas, and which has a laser generator having a transmitter that emits a laser beam of a specific wavelength. and a laser receiver having a receiver for receiving the laser beam oscillated from the transmitter, wherein the laser generator and the laser receiver are arranged opposite to each other on both sides of the packaging bag. having a gas concentration meter,
    A gas concentration measuring device for a packaging bag, wherein the laser generating section and the laser receiving section have sucker portions capable of being sucked for sealing the respective tip portions and the packaging bag.
  2. 前記吸盤部は、袋ガイド板を有している請求項１に記載の包装袋のガス濃度測定装置。 2. The gas concentration measuring device for packaging bags according to claim 1, wherein said suction cup portion has a bag guide plate.
  3. 前記吸盤部は、厚さ方向を上下に配置された包装袋に対して斜め上方から前記包装袋を吸引するように配されている請求項１または２に記載の包装袋のガス濃度測定装置。 3. The gas concentration measuring device for a packaging bag according to claim 1, wherein the suction cup portion is arranged so as to suck the packaging bag vertically arranged in the thickness direction from an obliquely upward direction.
  4. 前記レーザー発生部の先端に設けられた吸盤部は、前記発信器から発振されるレーザー光を屈折させて前記受信器に受光させるレンズを有している請求項１ないし３のいずれかに記載の包装袋のガス濃度測定装置。 4. The lens according to claim 1, wherein the suction cup provided at the tip of said laser generator has a lens that refracts the laser beam emitted from said transmitter and causes said receiver to receive the laser beam. Gas concentration measurement device for packaging bags.
  5. 特定波長のレーザー光を照射する発信器を有するレーザー発生部と、前記発信器から発振されるレーザー光を受光する受信器を有するレーザー受光部とを備え、前記レーザー発生部と前記レーザー受光部とが包装袋の両側に対向して配されるレーザー式ガス濃度計を有したガス濃度測定装置における包装袋のガス濃度測定方法であって、
    前記レーザー発生部の先端部および前記レーザー受光部の先端部に設けられた吸着可能な吸盤部により、前記レーザー発生部の先端部および前記レーザー受光部の先端部と前記包装袋とをそれぞれ密閉させて測定することを特徴とする包装袋のガス濃度測定方法。     A laser generator having a transmitter for irradiating a laser beam of a specific wavelength, and a laser receiver having a receiver for receiving the laser beam oscillated from the transmitter, wherein the laser generator and the laser receiver are provided. A method for measuring the gas concentration of a packaging bag in a gas concentration measuring device having a laser type gas concentration meter arranged opposite to both sides of the packaging bag,
    The tip of the laser generating section and the tip of the laser receiving section are sealed with the packaging bag by sucking cup sections provided at the tip of the laser generating section and the tip of the laser receiving section, respectively. A method for measuring the gas concentration of a packaging bag, characterized in that the gas concentration is measured by
PCT/JP2022/019761 2021-05-17 2022-05-10 Packaging bag gas concentration measuring device, and packaging bag gas concentration measuring method WO2022244647A1 (en)

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Citations (6)

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Publication number Priority date Publication date Assignee Title
US20100067012A1 (en) * 2006-10-30 2010-03-18 Universita Degli Studi Di Padova Method for the automated measurement of gas pressure and concentration inside sealed containers
JP2010107197A (en) * 2008-10-28 2010-05-13 General Packer Co Ltd Instrument for measuring concentration of gas in packaging bag
JP2016520838A (en) * 2013-05-27 2016-07-14 ガスポロックス エービー System and method for determining the concentration of a gas in a container
JP2018119894A (en) * 2017-01-27 2018-08-02 日立造船株式会社 Laser spectroscopy inspection method and laser spectroscopy inspection device
JP2019534457A (en) * 2016-11-04 2019-11-28 ヴィルコ・アーゲー Method and apparatus for measuring the concentration of a gas
JP2021067634A (en) * 2019-10-28 2021-04-30 ゼネラルパッカー株式会社 Device for measuring gas concentration in packaging bag

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100067012A1 (en) * 2006-10-30 2010-03-18 Universita Degli Studi Di Padova Method for the automated measurement of gas pressure and concentration inside sealed containers
JP2010107197A (en) * 2008-10-28 2010-05-13 General Packer Co Ltd Instrument for measuring concentration of gas in packaging bag
JP2016520838A (en) * 2013-05-27 2016-07-14 ガスポロックス エービー System and method for determining the concentration of a gas in a container
JP2019534457A (en) * 2016-11-04 2019-11-28 ヴィルコ・アーゲー Method and apparatus for measuring the concentration of a gas
JP2018119894A (en) * 2017-01-27 2018-08-02 日立造船株式会社 Laser spectroscopy inspection method and laser spectroscopy inspection device
JP2021067634A (en) * 2019-10-28 2021-04-30 ゼネラルパッカー株式会社 Device for measuring gas concentration in packaging bag

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