WO2021079994A1 - Packaging container gas concentration measuring device, packaging machine provided with same, and method for measuring gas concentration in packaging machine - Google Patents

Packaging container gas concentration measuring device, packaging machine provided with same, and method for measuring gas concentration in packaging machine Download PDF

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Publication number
WO2021079994A1
WO2021079994A1 PCT/JP2020/039932 JP2020039932W WO2021079994A1 WO 2021079994 A1 WO2021079994 A1 WO 2021079994A1 JP 2020039932 W JP2020039932 W JP 2020039932W WO 2021079994 A1 WO2021079994 A1 WO 2021079994A1
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WIPO (PCT)
Prior art keywords
laser
packaging container
tip
gas
packaging
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PCT/JP2020/039932
Other languages
French (fr)
Japanese (ja)
Inventor
雅志 大島
Original Assignee
ゼネラルパッカー株式会社
雅志 大島
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Publication of WO2021079994A1 publication Critical patent/WO2021079994A1/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
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N21/03—Cuvette constructions
    • 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
    • G01N21/61—Non-dispersive gas analysers
    • 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
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/90—Investigating the presence of flaws or contamination in a container or its contents

Definitions

  • the present invention relates to a gas concentration measuring device for a packaging container capable of measuring the concentration of a specific gas in the packaging container, a packaging machine equipped with the gas concentration measuring device, and a method for measuring the gas concentration in the packaging machine.
  • Patent Document 1 describes an inert gas in which an object to be packaged is put into a packaging container and an inert gas is filled from a nozzle inserted into the packaging container to replace the inert gas with oxygen in the packaging container. The filling method is disclosed.
  • Patent Document 2 a measuring method using a laser gas concentration measuring device. ..
  • this laser type gas concentration measuring device measures the gas concentration by measuring the number of gas molecules within a certain distance by utilizing the property that most of the gas molecules absorb light of a specific wavelength. Therefore, the accuracy of the distance of the laser beam passing through the object to be measured (packaging container) is important.
  • the packaging container in which the packaged object is packaged may have a different shape, for example, the distance (the packaging container in which the packaged object is packaged) between the laser emitting portion and the laser receiving portion (the packaging container in which the packaged object is packaged) ( For example, the thickness) may fluctuate, which deteriorates the measurement accuracy.
  • an object of the present invention is a packaging machine and a packaging machine provided with a gas concentration measuring device for a packaging container, in which the measurement accuracy does not deteriorate due to fluctuations in the distance between the laser emitting unit and the laser receiving unit. To provide a method for measuring the gas concentration in the above.
  • a device that solves the above-mentioned problems is a gas concentration measuring device that sequentially measures the concentration of a specific gas in a packaging container that is packed with an object to be packaged and replaced with gas, and emits a laser beam of a specific wavelength.
  • a laser generating unit having a device and a laser receiving unit having a receiver for receiving laser light oscillated from the transmitter are provided, and the laser generating unit and the laser receiving unit face each other on both sides of the packaging container.
  • a gas concentration measuring device for a packaging container which is configured to measure the concentration of a specific gas in the packaging container (claim 1).
  • the gas concentration measuring device of the packaging container has a pair of sandwiches arranged on both sides of the packaging container, and the separation distance between the tip of the laser emitting portion and the tip of the laser receiving portion is a constant distance.
  • the tip of the laser emitting portion and the tip of the laser receiving portion are configured to come into contact with the packaging container, respectively.
  • the laser emitting portion and the laser receiving portion are configured to be relatively close to each other and separated from each other, and between the tip of the laser emitting portion and the tip of the laser receiving portion with respect to the packaging container to be measured sequentially.
  • the tip of the laser emitting portion and the tip of the laser receiving portion may be configured to come into contact with each other of the packaging container by approaching the laser emitting portion so as to have a constant distance (claim 3). ..
  • a device that solves the above-mentioned problems is a gas concentration measuring device that sequentially measures the concentration of a specific gas in a packaging container that is packed with an object to be packaged and replaced with gas, and irradiates a laser beam of a specific wavelength.
  • a laser generator having a transmitter and a laser receiver having a receiver for receiving laser light oscillated from the transmitter are provided, and the laser generator and the laser receiver are located on both sides of the packaging container. It has a laser gas densitometer arranged to face each other, and the laser emitting unit and the laser receiving unit are configured to be relatively close to each other and separated from each other.
  • the packaging is characterized in that the concentration of the specific gas in the packaging container is measured by calculating and correcting a numerical value converted from the measured value at the separation distance to a reference constant distance.
  • a device for measuring the gas concentration of a container (claim 4).
  • the packaging container may be a packaging bag, a bottle, or a resin container (claim 5).
  • a gas concentration measuring method in a packaging machine in which the concentration of a specific gas in a packaging container filled with an object to be packaged and replaced with a gas is sequentially measured by a measuring device.
  • the measuring device includes a laser generator having a transmitter that irradiates a laser beam having a specific wavelength, and a laser receiver having a receiver that receives the laser beam oscillated from the transmitter.
  • a laser gas densitometer in which the laser light receiving part is arranged facing both sides of the packaging container, the packaged object is filled in the packaging container, gas is replaced with an inert gas, and the opening is sealed.
  • the tip of the laser emitting portion and the tip of the laser receiving portion are packaged in a state where the separation distance between the tip of the laser emitting portion and the tip of the laser receiving portion is maintained at a constant distance.
  • the measurement distance of the packaging container between the laser emitting portion and the laser receiving portion of the packaging container, which is sequentially measured is kept constant and the concentration of the specific gas in the packaging container is increased.
  • a method for measuring a gas concentration in a packaging machine which comprises measuring (claim 7).
  • the separation distance between the tip of the laser emitting portion and the tip of the laser receiving portion is maintained at a constant distance with respect to the packaging container to be sequentially measured.
  • the tip of the laser emitting portion and the tip of the laser receiving portion are brought into contact with the packaging container, respectively. It is preferable to have a step (claim 8).
  • the method for measuring the gas concentration in the packaging machine is to approach the packaging container to be sequentially measured so that the distance between the tip of the laser emitting portion and the tip of the laser receiving portion is a constant distance.
  • the tip of the laser emitting portion and the tip of the laser receiving portion may each have a step of contacting the packaging container (claim 9).
  • the measuring device includes a laser generator having a transmitter that irradiates a laser beam of a specific wavelength, and a laser receiver having a receiver that receives the laser beam oscillated from the transmitter.
  • a laser gas densitometer in which the laser receiving part is arranged so as to face both sides of the packaging container, the packaging container is filled with an object to be packaged, gas is replaced with an inert gas, and the opening is sealed.
  • the tip of the laser emitting portion and the tip of the laser receiving portion are brought into contact with the packaging container, respectively, and the tip of the laser emitting portion is contacted.
  • the concentration of the specific gas in the packaging container is measured by measuring the separation distance between the tips of the laser receiving unit, calculating a value converted from the measured value at the separation distance to a reference constant distance, and correcting the value. It is a method for measuring a gas concentration in a packaging machine, which is characterized in that the method is used (claim 10).
  • the tip of the laser emitting portion is maintained at a constant distance between the tip of the laser emitting portion and the tip of the laser receiving portion.
  • the measurement distance of the packaging container between the laser light emitting part and the laser light receiving part of the packaging container to be measured sequentially is kept constant, so that the laser light emitting part There is no variation in the distance between the laser receiver and the object to be measured, and the measurement accuracy does not deteriorate.
  • the packaging container gas concentration measuring device capable of more reliably achieving the effect of claim 1 can be configured with a simple structure.
  • the packaging container gas concentration measuring device capable of more reliably achieving the effect of claim 1 can be configured with another simple structure.
  • the gas concentration measuring device for a packaging container according to claim 4 a state in which the tip of the laser emitting portion and the tip of the laser receiving portion are in contact with the packaging container to be sequentially measured. Then, the separation distance between the tip of the laser emitting part and the tip of the laser receiving part is measured, and the value converted from the measured value at the separation distance to a reference constant distance is calculated and corrected. The measurement accuracy does not deteriorate even if the distance of the object to be measured fluctuates between the laser receiving unit.
  • the effects of claims 1 to 4 can be exerted on various types of packaging containers.
  • the packaging machine provided with the gas concentration measuring device for the packaging container according to claim 6 comprises a packaging machine that exhibits the effects of claims 1 to 5.
  • the tip of the laser emitting portion and the tip of the laser emitting portion are maintained in a state where the separation distance between the tip of the laser emitting portion and the tip of the laser receiving portion is maintained at a constant distance.
  • the effect of claim 7 can be more reliably achieved.
  • the effect of claim 7 can be more easily and surely achieved.
  • the tip of the laser emitting portion and the tip of the laser receiving portion are in contact with the packaging container, respectively, with respect to the packaging container to be measured sequentially.
  • the laser emitting part and the measurement accuracy does not deteriorate even if the distance between the laser receiving parts and the object to be measured fluctuates.
  • FIG. 1 It is a front view of an Example of the gas measuring apparatus of the packaging container of this invention arranged in a packaging machine. It is explanatory drawing for demonstrating the laser type gas densitometer in the gas concentration measuring apparatus of the packaging container shown in FIG. It is a top view of the plan of the packaging machine provided with the gas concentration measuring device of the packaging container shown in FIG.
  • the tip of the laser emitting portion 33 and the tip of the laser receiving portion 33 are maintained at a constant distance between the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33.
  • the measurement distance of the packaging container H between the laser emitting unit 31 and the laser receiving unit 33 of the packaging container H to be sequentially measured is kept constant, so that the laser emission is performed.
  • a gas concentration measuring device G for a packaging container in which the distance between the unit 31 and the laser receiving unit 33 does not fluctuate and the measurement accuracy does not deteriorate, a packaging machine P equipped with the gas concentration measuring device G, and a gas concentration measuring method in the packaging machine. was realized.
  • the gas concentration measuring device for the packaging container of the present invention will be described with reference to an embodiment shown in FIG. 1 or FIG.
  • the gas concentration measuring device G of the packaging container of this embodiment is a gas concentration measuring device that sequentially measures the concentration of a specific gas in the packaging container H that is packed with the object to be packaged and replaced with gas, and has a specific wavelength.
  • a laser generator 31 having a transmitter 30 for irradiating the laser beam of the above, and a laser receiver 33 having a receiver 32 for receiving the laser beam oscillated from the transmitter 30, the laser generator 31 and the laser receiver.
  • the 33 has a laser gas densitometer M arranged to face both sides of the packaging container H, and the separation distance between the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 is a constant distance.
  • the tip portion 31a of the laser emitting portion 33 and the tip portion 33a of the laser receiving portion 33 are brought into contact with the packaging container H, respectively, so that the laser emitting portion 31 and the laser of the packaging container H measured sequentially are measured.
  • the measurement distance of the packaging container H between the light receiving units 33 is kept constant, and the concentration of the specific gas in the packaging container H is measured.
  • the gas concentration measuring device of this embodiment sequentially measures the concentration of a specific gas in the packaging container H in which the object to be packaged is filled and replaced with gas.
  • the gas concentration measuring device G of the packaging container of this embodiment lasers the oxygen concentration which is a specific gas in the packaging container H packaged by replacing the gas with an inert gas such as nitrogen or carbon dioxide. It is measured by the type gas densitometer M, and is used as a stand-alone measuring device or installed in the inspection process of various packaging machines such as a rotary type gas filling and packaging machine.
  • the packaging container may be a packaging bag H as in this embodiment, or may be a bottle or a resin container.
  • the laser gas densitometer M has a laser generator 31 having a transmitter 30 that irradiates a laser beam having a specific wavelength, and a receiver that receives the laser beam oscillated from the transmitter 30.
  • a laser receiving unit 33 having a vessel 32 is provided, and the laser generating unit 31 and the laser receiving unit 33 are arranged so as to face each other on both sides of the packaging container H.
  • the laser gas densitometer M uses infrared absorption spectroscopy using a semiconductor laser as a light source. When light of a specific frequency is given to a molecule to be measured, it absorbs light energy and measures the gas concentration. It is for displaying.
  • the laser gas densitometer M has a configuration as shown in FIG. 2, and includes a laser generating unit 31 and a laser receiving unit 33.
  • the laser generator 31 has a function of generating laser light of a specific wavelength and irradiating the measurement gas via the fiber cable 75, and supplies a stable power supply to the laser diode, the power supply unit 71 and the laser diode. It is composed of a cooler unit 72 for stabilizing the wavelength and its intensity of the laser beam output from the laser beam, and a temperature controller 73 for keeping the temperature of the cooler of the cooler unit 72 constant.
  • the laser light receiving unit 33 has a function of measuring the intensity of the laser light absorbed by the measuring gas via the fiber cable 82 and outputting the gas concentration from the intensity, and the laser light emitted from the laser generating unit 31.
  • the laser beam having a specific wavelength emitted from the transmitter 30 is selected from the wavelength (inherent frequency) range of 760 to 770 nm.
  • a reflection prism may be used as shown in FIG.
  • Reference numeral 77 denotes a detection unit that is irradiated from the transmitter 30, passes through the measurement gas, converts the laser light caught through the receiver (reflection prism) 32 into an electric current, and outputs the laser light to the measurement / display unit 81.
  • the laser emitting unit is in a state where the separation distance between the tip portion 31a of the laser emitting unit 31 and the tip portion 33a of the laser receiving unit 33 is maintained at a constant distance.
  • the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 of this embodiment are configured to be relatively close to each other and separated from each other.
  • the laser emitting unit 31 of this embodiment is fixed to the cylinder base 34, and the cylinder 35 is arranged below the cylinder base 34.
  • the cylinder 35 causes the cylinder base 34 and the laser emitting unit 31 to emit light.
  • the tip portion 31a of the above is configured to be reciprocating to the left and right in FIG.
  • the laser receiving portion 33 of this embodiment is fixed to the cylinder base 36, and the cylinder 37 is arranged below the cylinder base 36.
  • the cylinder 37 causes the tip portions of the cylinder base 36 and the laser receiving portion 33.
  • 33a is configured to be able to reciprocate left and right in FIG.
  • the tip 31a of the laser emitting unit 31 and the tip 33a of the laser receiving unit 33 of this embodiment are configured to be relatively close to each other and separated by the action of the cylinder 35 and the cylinder 37 as described above. Due to these actions, the separation distance between the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 can be maintained at a set constant distance.
  • the gas concentration measuring device for the packaging container of the present invention is not limited to this, and the laser emitting portion has a fixed arrangement position of the tip of the laser emitting portion and the tip of the laser receiving portion. The separation distance between the tip portion and the tip portion of the laser receiving portion may be maintained at a constant distance.
  • the tip surfaces of the laser emitting unit 31 and the laser receiving unit 33 are open, and the inside of the laser paths 31b and 33b of the laser emitting unit 31 and the laser receiving unit 33 is after contacting the packaging container H and before laser irradiation. It is preferable that a suction mechanism (not shown) is provided so as to create a vacuum atmosphere. Further, a tank (not shown) filled with nitrogen gas is attached to the laser paths 31b and 33b via a flow rate adjusting valve (not shown) and a flow meter (not shown), and the nitrogen gas is supplied to supply the laser path.
  • the residual oxygen rate in 31b and 33b may be set to almost 0% to further improve the measurement accuracy.
  • the paired holding bodies 38 and 39 are for bringing the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 into contact with the packaging container H, respectively. As shown, they are arranged below the laser emitting unit 31 or the laser receiving unit 33 and on both sides of the packaging container H, respectively.
  • the holding body 39 is configured to be reciprocating in the left-right direction in FIG. 1 by the cylinder 40, and when the holding body 39 moves in the left direction in FIG. 1, both sides near the bottom of the packaging container H are the holding bodies 38, 39.
  • the upper part of the packaging container H expands in the left-right direction due to this action, and the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 are respectively in contact with the packaging container H. Has been done.
  • the packaging container H is sandwiched between the pair of holding bodies 38 and 39 in a state where the separation distance between the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 is maintained at a constant distance.
  • the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 come into contact with the packaging container H, respectively, so that between the laser emitting portion 31 and the laser receiving portion 33 of the packaging container H to be sequentially measured.
  • the measurement distance of the packaging container H is kept constant. As a result, the distance between the laser emitting unit 31 and the laser receiving unit 33 does not fluctuate, and the measurement accuracy can be improved.
  • the gas concentration measuring device for the packaging container of the present invention is not limited to this, and does not have a pair of holding bodies 38 and 39 for sandwiching the packaging container H, and the laser emitting unit 31 and the laser receiving unit 33 do not have.
  • the distance between the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 is a constant distance with respect to the packaging container H to be measured sequentially.
  • the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 may be configured to come into contact with each other of the packaging container H.
  • the gas concentration measuring device of this embodiment is a gas concentration measuring device that sequentially measures the concentration of a specific gas in a packaging container H that is packed with an object to be packaged and replaced with gas, and emits laser light of a specific wavelength.
  • a laser generator 31 having a transmitter 30 to irradiate and a laser receiver 33 having a receiver 32 to receive the laser light oscillated from the transmitter 30 are provided, and the laser generator 31 and the laser receiver 33 are packaged.
  • a packaging container having a laser gas densitometer M arranged opposite to each other on both sides of the container H, the laser emitting unit 31 and the laser receiving unit 33 are configured to be relatively close to each other and separated from each other, and are sequentially measured.
  • the tip 31a of the laser emitting portion 31 and the tip 33a of the laser receiving portion 33 are in contact with the packaging container H, respectively, and the tip 31a of the laser emitting portion 31 and the tip of the laser receiving portion 33 are brought into contact with each other.
  • the concentration of the specific gas in the packaging container H is measured by measuring the separation distance between the portions 33a, calculating a value converted from the measured value at the separation distance into a reference constant distance, and correcting the value.
  • the same components as those of the gas concentration measuring device G described above are designated by the same reference numerals and the description thereof will be omitted.
  • the difference between the gas concentration measuring device of this embodiment and the gas concentration measuring device G described above is that in the gas concentration measuring device G, the separation distance between the tip 31a of the laser emitting unit 31 and the tip 33a of the laser receiving unit 33 Is held at a certain distance, the tip portion 31a of the laser emitting portion 33 and the tip portion 33a of the laser receiving portion 33 are brought into contact with the packaging container H, respectively.
  • the packaging container H to be sequentially measured is brought into contact with each other.
  • the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 are moved according to the different widths (w) of the object to be measured (packaging container H) each time. To abut.
  • the separation distance between the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 is measured, and a numerical value converted from the measured value at the separation distance into a reference constant distance is calculated. It is configured so that the concentration of the specific gas in the packaging container H is measured by the correction.
  • the movement of the laser emitting unit 31 and the laser receiving unit 33 corresponding to the different widths (w) of the object to be measured (packaging container H) is such that the different widths (w) of the objects to be measured (packaging container H) are moved by a position sensor or the like. Is preferable, and a method of reciprocating the laser emitting unit 31 and the laser receiving unit 33 based on the detected value, a method of using a servomotor, or the like is preferable.
  • the separation distance between the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 is, for example, the laser receiving distance between the tip portion 31a of the laser emitting portion 31 by the cylinders 35 and 37 and the laser receiving portion 31a.
  • the gas concentration can be measured with high accuracy while remaining different. It is configured as follows.
  • the packaging machine P of this embodiment is a rotary gas filling and packaging machine as shown in FIG. 1 or FIG.
  • This packaging machine P has a bag feeding process (1), a printing process such as an expiration date (2), a packaging bag opening process (3), an object filling process (4), a pushing process (5), and a nozzle insertion. And 16 steps of temporary attachment seal process (6), gas replacement / fir hogushi process (7) to (13), top seal process (14), seal cooling / gas replacement detection process (15), product take-out process (16).
  • a stand 53 that freely rotates an intermittent rotating shaft (not shown) in a vertical direction is provided, and a disk-shaped rotating body (moving body) 52 attached to the intermittent rotating shaft is provided. Is provided so that 16 grips to g for gripping or releasing the packaging bag H, which is a packaging container, project in the radial direction at equal angular intervals.
  • reference numeral 41 is a sealing device.
  • the gas concentration measuring device G for the packaging container is arranged in the seal cooling / gas replacement detection step (15).
  • the wrapping machine P of this embodiment is a rotary wrapping machine that intermittently drives a moving body (disk-shaped rotating body) 52, but the wrapping machine of the present invention is not limited to this, and is known for linear movement.
  • a type (truck method) packaging machine may be used.
  • a linearly moving bag wrapping machine is, for example, a moving body that horizontally moves in an annular passage consisting of a straight portion and semicircular portions at both ends thereof, and is provided with a large number of grip pairs that can be freely converted into an upright posture or a horizontal posture.
  • the packaging bag supplied in the process is supported by each grip pair, and the packaging bag is intermittently stopped in each process such as the opening process, the filling process, and the bag mouth sealing process to pack the packaged object. It refers to a structure.
  • the wrapping machine of the present invention may be a vertical pillow wrapping machine that fills and wraps the object to be packaged in the bag while making a sheet-shaped film, and the gas of the wrapping container is applied to the product discharge path of the wrapping machine.
  • the concentration measuring device G may be arranged.
  • the wrapping machine of the present invention may be a horizontal pillow wrapping machine that fills and wraps the object to be packaged in the bag while making a sheet-shaped film, and is above the conveyor, which is a product discharge path of the wrapping machine.
  • the gas concentration measuring device G of the packaging container may be arranged in the package.
  • the wrapping machine of the present invention may be a bottling wrapping machine that fills and wraps a beverage or the like in a bottle i, and the packaging container is located above the conveyor through which the bottle i in the vertical orientation is passed and near the product discharge path.
  • the gas concentration measuring device G may be arranged.
  • the concentration of a specific gas in the packaging container H filled with the object to be packaged and replaced with gas is sequentially measured by a measuring device (laser type gas concentration meter M).
  • the measuring device (laser type gas densitometer M) is oscillated from a laser generator 31 having a transmitter 30 that irradiates a laser beam of a specific wavelength and a transmitter 30.
  • a laser gas densitometer M provided with a laser light receiving unit 33 having a receiver 32 for receiving laser light, and a laser generating unit 31 and a laser receiving unit 33 arranged to face each other on both sides of the packaging container H.
  • the separation distance between the tip 31a of the laser emitting portion 31 and the tip 33a of the laser receiving portion 33 is increased.
  • the laser emitting portion 31 of the packaging container H is sequentially measured by bringing the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 into contact with each other while being held at a fixed distance.
  • the gas concentration measuring method in the packaging machine of this embodiment will be described, but the same components as those of the gas concentration measuring device G of the packaging container described above are designated by the same reference numerals and the description thereof will be omitted.
  • the laser emitting unit 31 whose arrangement position is fixed in a state where both upper sides of the packaging container H are supported by the grip vs. g of the packaging machine P and the vertical posture is maintained.
  • the holding body 39 moves to the left in FIG. Both sides are sandwiched by the sandwiching bodies 38 and 39.
  • the upper part of the packaging container H expands in the left-right direction, and the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 abut on the packaging container H, respectively, so that the laser emitting portion 31 and the laser are used.
  • the measurement distance of the packaging container H between the light receiving portions 33 is kept constant.
  • the method for measuring the gas concentration in the packaging machine of the present invention is not limited to this, and the distance between the tip of the laser emitting portion and the tip of the laser receiving portion with respect to the packaging container to be sequentially measured is not limited to this.
  • the step of bringing the tip of the laser emitting portion and the tip of the laser receiving portion into contact with the packaging container may be provided by approaching them so as to have a certain distance.
  • the concentration of a specific gas in the packaging container H filled with the object to be packaged and replaced with gas is sequentially measured by a measuring device (laser type gas concentration meter M).
  • a measuring device laser type gas concentration meter M
  • Packaging using a laser gas densitometer M including a laser light receiving unit 33 having a receiver 32 for receiving light, and a laser generating unit 31 and a laser receiving unit 33 arranged to face each other on both sides of the packaging container H.
  • the gas concentration measuring method in the packaging machine of this embodiment will be described, but the same components as those of the gas concentration measuring device G of the packaging container described above are designated by the same reference numerals and the description thereof will be omitted.
  • the tip portion 31a of the laser emitting unit 31 and the laser receiving light are received in a state where both upper sides of the packaging container H are supported by the grip pair g of the packaging machine P and the vertical posture is maintained.
  • the tip portion 31a of the laser light emitting portion 31 and the laser are used according to the different widths (w) of the object to be measured (packaging container H).
  • the tip portion 33a of the light receiving portion 33 moves by the action of the cylinders 35 and 37 and comes into contact with the packaging container H.
  • the separation distance between the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 is measured, and a numerical value converted from the measured value at the separation distance into a reference constant distance is calculated.
  • the concentration of the specific gas in the packaging container H is measured.
  • the separation distance between the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 is, for example, the tip portion 31a of the laser emitting portion 31 and the tip portion of the laser receiving portion 33 by the cylinders 35 and 37.
  • measured value reference constant distance
  • gas concentration X converted and corrected value
  • the gas concentration can be measured with high accuracy while remaining different. It is configured as follows.
  • the movement of the laser emitting unit 31 and the laser receiving unit 33 corresponding to the different widths (w) of the object to be measured (packaging container H) is such that the different widths (w) of the objects to be measured (packaging container H) are moved by a position sensor or the like. Is preferable, and a method of reciprocating the laser emitting unit 31 and the laser receiving unit 33 based on the detected value, a method of using a servomotor, or the like is preferable.
  • G Gas concentration measuring device for packaging container M Laser gas concentration meter P Packaging machine H Packaging container g Grip pair 30 Transmitter 31 Laser transmitter 31a Laser emitter tip 32 Receiver 33 Laser receiver 33a Laser receiver tip Part 34 Cylinder base 35 Cylinder 36 Cylinder base 37 Cylinders 38, 39 Paired sandwiches 40 Cylinder 41 Sealing device 51 Machine stand 52 Disc-shaped rotating body (moving body) 53 stand

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Abstract

[Problem] To provide a packaging container gas concentration measuring device with which no deterioration in measuring accuracy occurs as a result of a variation in the distance to an object being measured between a laser light emitting portion and a laser light receiving portion, a packaging machine provided with the same, and a method for measuring the gas concentration in said packaging machine. [Solution] In a packaging container gas concentration measuring device G according to the present invention, a tip end portion 31a of a laser light emitting portion 33 and a tip end portion 33a of a laser light receiving portion 33 are each brought into contact with a packaging container H, with the separation between the tip end portion 31a of the laser light emitting portion 31 and the tip end portion 33a of the laser light receiving portion 33 maintained at a fixed distance, thereby maintaining a fixed measurement distance to the packaging container H between the laser light emitting portion 31 and the laser light receiving portion 33, eliminating variations in the distance to the object being measured between the laser light emitting portion and the laser light receiving portion, and eliminating a deterioration in measuring accuracy.

Description

包装容器のガス濃度測定装置、それを備えた包装機および包装機におけるガス濃度測定方法Gas concentration measuring device for packaging containers, packaging machines equipped with it, and gas concentration measuring method in packaging machines
　本発明は、包装容器内の特定ガスの濃度を測定することができる包装容器のガス濃度測定装置、それを備えた包装機および包装機におけるガス濃度測定方法に関する。 The present invention relates to a gas concentration measuring device for a packaging container capable of measuring the concentration of a specific gas in the packaging container, a packaging machine equipped with the gas concentration measuring device, and a method for measuring the gas concentration in the packaging machine.
　被包装物、特に食品の場合には、保存期間、賞味期限を長くするために、包装時に包装容器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、包装容器内に被包装物を投入すると共に包装容器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容器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。 In the case of objects to be packaged, especially food, in order to prolong the storage period and expiration date, gas replacement packaging that eliminates air remaining in the packaging container during packaging and fills with an inert gas such as nitrogen or carbon dioxide. Is being done. For example, Patent Document 1 describes an inert gas in which an object to be packaged is put into a packaging container and an inert gas is filled from a nozzle inserted into the packaging container to replace the inert gas with oxygen in the packaging container. The filling method is disclosed.
　そして、製品検査において、被包装物を包装済みの包装容器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。 Then, as a method of measuring the oxygen concentration remaining in the packaged container in which the object to be packaged is packaged in the product inspection, the Applicant has proposed, for example, Patent Document 2 a measuring method using a laser gas concentration measuring device. ..
　ところで、このレーザー式ガス濃度測定装置は、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、一定距離内におけるガス分子の数を計測しガス濃度を測定するものである。このため、被測定物（包装容器）を通過するレーザー光の距離の精度が重要となる。 By the way, this laser type gas concentration measuring device measures the gas concentration by measuring the number of gas molecules within a certain distance by utilizing the property that most of the gas molecules absorb light of a specific wavelength. Therefore, the accuracy of the distance of the laser beam passing through the object to be measured (packaging container) is important.
　しかし、被包装物を包装済みの包装容器は、例えば個々に形状が異なることがあるため、レーザー発光部とレーザー受光部間における被測定物（被包装物を包装済みの包装容器）の距離（例えば厚み）が変動する場合があり、測定精度を劣化させていた。 However, since the packaging container in which the packaged object is packaged may have a different shape, for example, the distance (the packaging container in which the packaged object is packaged) between the laser emitting portion and the laser receiving portion (the packaging container in which the packaged object is packaged) ( For example, the thickness) may fluctuate, which deteriorates the measurement accuracy.
特許第３７４２０４２号公報Japanese Patent No. 3744022 特許第５１２４７１９号公報Japanese Patent No. 5124719
　そこで、本発明の課題は、レーザー発光部とレーザー受光部間における被測定物の距離の変動により測定精度が劣化することのない、包装容器のガス濃度測定装置それを備えた包装機および包装機における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 a packaging machine and a packaging machine provided with a gas concentration measuring device for a packaging container, in which the measurement accuracy does not deteriorate due to fluctuations in the distance between the laser emitting unit and the laser receiving unit. To provide a method for measuring the gas concentration in the above.
　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容器内の特定ガスの濃度を順次測定する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容器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、前記レーザー発光部の先端部と前記レーザー受光部の先端部間の離隔距離が一定距離に保持された状態で、前記レーザー発光部の先端部と前記レーザー受光部の先端部を前記包装容器にそれぞれ当接させることで、順次測定される前記包装容器の前記レーザー発光部と前記レーザー受光部間における前記包装容器の測定距離が一定に保持されて前記包装容器内の特定ガスの濃度が測定されるように構成されていることを特徴とする包装容器のガス濃度測定装置である（請求項１）。 A device that solves the above-mentioned problems is a gas concentration measuring device that sequentially measures the concentration of a specific gas in a packaging container that is packed with an object to be packaged and replaced with gas, and emits a laser beam of a specific wavelength. A laser generating unit having a device and a laser receiving unit having a receiver for receiving laser light oscillated from the transmitter are provided, and the laser generating unit and the laser receiving unit face each other on both sides of the packaging container. With a laser gas densitometer arranged in a state where the separation distance between the tip of the laser emitting portion and the tip of the laser receiving portion is maintained at a constant distance, the tip of the laser emitting portion and the tip of the laser emitting portion are maintained. By bringing the tip of the laser receiving portion into contact with the packaging container, the measurement distance of the packaging container between the laser emitting portion and the laser receiving portion of the packaging container, which is sequentially measured, is kept constant. A gas concentration measuring device for a packaging container, which is configured to measure the concentration of a specific gas in the packaging container (claim 1).
前記包装容器のガス濃度測定装置は、前記包装容器の両側に配された対となる挟持体を有し、前記レーザー発光部の先端部と前記レーザー受光部の先端部間の離隔距離が一定距離に保持された状態で、前記対となる挟持体により前記包装容器を挟圧することにより、前記レーザー発光部の先端部と前記レーザー受光部の先端部が前記包装容器にそれぞれ当接するように構成されていることが好ましい（請求項２）。前記レーザー発光部と前記レーザー受光部は相対的に接近及び離隔可能に構成されており、順次測定される前記包装容器に対して、前記レーザー発光部の先端部と前記レーザー受光部の先端部間の距離が一定距離となるように接近することにより、前記レーザー発光部の先端部と前記レーザー受光部の先端部が前記包装容器にそれぞれ当接するように構成されていてもよい（請求項３）。 The gas concentration measuring device of the packaging container has a pair of sandwiches arranged on both sides of the packaging container, and the separation distance between the tip of the laser emitting portion and the tip of the laser receiving portion is a constant distance. By sandwiching the packaging container with the pair of sandwiching bodies while being held in the container, the tip of the laser emitting portion and the tip of the laser receiving portion are configured to come into contact with the packaging container, respectively. (Claim 2). The laser emitting portion and the laser receiving portion are configured to be relatively close to each other and separated from each other, and between the tip of the laser emitting portion and the tip of the laser receiving portion with respect to the packaging container to be measured sequentially. The tip of the laser emitting portion and the tip of the laser receiving portion may be configured to come into contact with each other of the packaging container by approaching the laser emitting portion so as to have a constant distance (claim 3). ..
　また、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容器内の特定ガスの濃度を順次測定する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容器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、前記レーザー発光部と前記前記レーザー受光部は相対的に接近及び離隔可能に構成されており、順次測定される前記包装容器に対して、前記レーザー発光部の先端部と前記レーザー受光部の先端部を前記包装容器にそれぞれ当接させた状態で、前記レーザー発光部の先端部と前記レーザー受光部の先端部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前記包装容器内の特定ガスの濃度が測定されるように構成されていることを特徴とする包装容器のガス濃度測定装置である（請求項４）。 Further, a device that solves the above-mentioned problems is a gas concentration measuring device that sequentially measures the concentration of a specific gas in a packaging container that is packed with an object to be packaged and replaced with gas, and irradiates a laser beam of a specific wavelength. A laser generator having a transmitter and a laser receiver having a receiver for receiving laser light oscillated from the transmitter are provided, and the laser generator and the laser receiver are located on both sides of the packaging container. It has a laser gas densitometer arranged to face each other, and the laser emitting unit and the laser receiving unit are configured to be relatively close to each other and separated from each other. With the tip of the laser emitting portion and the tip of the laser receiving portion in contact with the packaging container, the separation distance between the tip of the laser emitting portion and the tip of the laser receiving portion is measured. The packaging is characterized in that the concentration of the specific gas in the packaging container is measured by calculating and correcting a numerical value converted from the measured value at the separation distance to a reference constant distance. A device for measuring the gas concentration of a container (claim 4).
前記包装容器は、包装袋、瓶または樹脂容器のいずれであってもよい（請求項５）。 The packaging container may be a packaging bag, a bottle, or a resin container (claim 5).
さらに、上記課題を解決するものは、前記請求項１ないし５のいずれかに記載の包装容器のガス濃度測定装置を備えていることを特徴とする包装機である（請求項６）。 Further, a packaging machine that solves the above-mentioned problems is provided with the gas concentration measuring device for the packaging container according to any one of claims 1 to 5 (claim 6).
さらに、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容器内の特定ガスの濃度を測定装置により順次測定する包装機におけるガス濃度測定方法であって、前記測定装置は、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前記包装容器の両側に対向して配されるレーザー式ガス濃度計を用い、前記包装容器内に被包装物を充填して不活性ガスによるガス置換を行い開口部をシールした後において、前記レーザー発光部の先端部と前記レーザー受光部の先端部間の離隔距離が一定距離に保持された状態で、前記レーザー発光部の先端部と前記レーザー受光部の先端部を前記包装容器にそれぞれ当接させることで、順次測定される前記包装容器の前記レーザー発光部と前記レーザー受光部間における前記包装容器の測定距離が一定に保持されて前記包装容器内の特定ガスの濃度が測定されることを特徴とする包装機におけるガス濃度測定方法である（請求項７）。 Further, what solves the above-mentioned problem is a gas concentration measuring method in a packaging machine in which the concentration of a specific gas in a packaging container filled with an object to be packaged and replaced with a gas is sequentially measured by a measuring device. The measuring device includes a laser generator having a transmitter that irradiates a laser beam having a specific wavelength, and a laser receiver having a receiver that receives the laser beam oscillated from the transmitter. Using a laser gas densitometer in which the laser light receiving part is arranged facing both sides of the packaging container, the packaged object is filled in the packaging container, gas is replaced with an inert gas, and the opening is sealed. Later, the tip of the laser emitting portion and the tip of the laser receiving portion are packaged in a state where the separation distance between the tip of the laser emitting portion and the tip of the laser receiving portion is maintained at a constant distance. By abutting each of the containers, the measurement distance of the packaging container between the laser emitting portion and the laser receiving portion of the packaging container, which is sequentially measured, is kept constant and the concentration of the specific gas in the packaging container is increased. A method for measuring a gas concentration in a packaging machine, which comprises measuring (claim 7).
前記包装機におけるガス濃度測定方法は、順次測定される前記包装容器に対して、前記レーザー発光部の先端部と前記レーザー受光部の先端部間の離隔距離が一定距離に保持された状態で、前記包装容器の両側に配された対となる挟持体によって前記包装容器が挟圧されることにより、前記レーザー発光部の先端部と前記レーザー受光部の先端部が前記包装容器にそれぞれ当接される工程を有することが好ましい（請求項８）。前記包装機におけるガス濃度測定方法は、順次測定される前記包装容器に対して、前記レーザー発光部の先端部と前記レーザー受光部の先端部間の距離が一定距離となるように接近することにより、前記レーザー発光部の先端部と前記レーザー受光部の先端部が前記包装容器にそれぞれ当接する工程を有していてもよい（請求項９）。 In the method for measuring the gas concentration in the packaging machine, the separation distance between the tip of the laser emitting portion and the tip of the laser receiving portion is maintained at a constant distance with respect to the packaging container to be sequentially measured. By sandwiching the packaging container with a pair of sandwiches arranged on both sides of the packaging container, the tip of the laser emitting portion and the tip of the laser receiving portion are brought into contact with the packaging container, respectively. It is preferable to have a step (claim 8). The method for measuring the gas concentration in the packaging machine is to approach the packaging container to be sequentially measured so that the distance between the tip of the laser emitting portion and the tip of the laser receiving portion is a constant distance. The tip of the laser emitting portion and the tip of the laser receiving portion may each have a step of contacting the packaging container (claim 9).
さらに、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容器内の特定ガスの濃度を測定装置により順次測定する包装機におけるガス濃度測定方法であって、前記測定装置は、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前記包装容器の両側に対向して配されるレーザー式ガス濃度計を用い、前記包装容器内に被包装物を充填して不活性ガスによるガス置換を行い開口部をシールした後において、順次測定される前記包装容器に対して、前記レーザー発光部の先端部と前記レーザー受光部の先端部を前記包装容器にそれぞれ当接させた状態で、前記レーザー発光部の先端部と前記レーザー受光部の先端部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前記包装容器内の特定ガスの濃度が測定されることを特徴とする包装機におけるガス濃度測定方法である（請求項１０）。 Further, a method for measuring the gas concentration in a packaging machine, which sequentially measures the concentration of a specific gas in a packaging container filled with an object to be packaged and replaced with gas by a measuring device, solves the above-mentioned problems. The measuring device includes a laser generator having a transmitter that irradiates a laser beam of a specific wavelength, and a laser receiver having a receiver that receives the laser beam oscillated from the transmitter. Using a laser gas densitometer in which the laser receiving part is arranged so as to face both sides of the packaging container, the packaging container is filled with an object to be packaged, gas is replaced with an inert gas, and the opening is sealed. Later, with respect to the packaging container to be sequentially measured, the tip of the laser emitting portion and the tip of the laser receiving portion are brought into contact with the packaging container, respectively, and the tip of the laser emitting portion is contacted. The concentration of the specific gas in the packaging container is measured by measuring the separation distance between the tips of the laser receiving unit, calculating a value converted from the measured value at the separation distance to a reference constant distance, and correcting the value. It is a method for measuring a gas concentration in a packaging machine, which is characterized in that the method is used (claim 10).
　請求項１に記載の包装容器のガス濃度測定装置によれば、レーザー発光部の先端部とレーザー受光部の先端部間の離隔距離が一定距離に保持された状態で、レーザー発光部の先端部とレーザー受光部の先端部を包装容器にそれぞれ当接させることで、順次測定される包装容器のレーザー発光部とレーザー受光部間における包装容器の測定距離が一定に保持されるため、レーザー発光部とレーザー受光部間における被測定物の距離の変動がなくなり測定精度が劣化することがない。
　請求項２に記載の包装容器のガス濃度測定装置によれば、請求項１の効果をよりより確実に奏することができる包装容器のガス濃度測定装置を簡素な構造で構成できる。
　請求項３に記載の包装容器のガス濃度測定装置によれば、請求項１の効果をよりより確実に奏することができる包装容器のガス濃度測定装置を他の簡素な構造で構成できる。
　請求項４に記載の包装容器のガス濃度測定装置によれば、順次測定される包装容器に対して、レーザー発光部の先端部とレーザー受光部の先端部を包装容器にそれぞれ当接させた状態で、レーザー発光部の先端部とレーザー受光部の先端部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ため、レーザー発光部とレーザー受光部間における被測定物の距離が変動しても測定精度が劣化することがない。
　請求項５に記載の包装容器のガス濃度測定装置によれば、様々な種類の包装容器に対して上記請求項１ないし４の効果を奏することができる。
　請求項６に記載の包装容器のガス濃度測定装置を備えた包装機によれは、上記請求項１ないし５の効果を奏する包装機が構成される。
　請求項７に記載の包装機におけるガス濃度測定によれば、レーザー発光部の先端部とレーザー受光部の先端部間の離隔距離が一定距離に保持された状態で、レーザー発光部の先端部とレーザー受光部の先端部を包装容器にそれぞれ当接させることで、順次測定される包装容器のレーザー発光部とレーザー受光部間における包装容器の測定距離が一定に保持されるため、レーザー発光部とレーザー受光部間における被測定物の距離の変動がなくなり測定精度が劣化することがない。
　請求項８に記載の包装機におけるガス濃度測定によれば、請求項７の効果をより確実に奏することができる。
　請求項９に記載の包装機におけるガス濃度測定によれば、請求項７の効果をより容易かつ確実に奏することができる。
　請求項１０に記載の包装機におけるガス濃度測定によれば、順次測定される包装容器に対して、レーザー発光部の先端部とレーザー受光部の先端部を包装容器にそれぞれ当接させた状態で、レーザー発光部の先端部とレーザー受光部の先端部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ため、レーザー発光部とレーザー受光部間における被測定物の距離が変動しても測定精度が劣化することがない。 According to the gas concentration measuring device for the packaging container according to claim 1, the tip of the laser emitting portion is maintained at a constant distance between the tip of the laser emitting portion and the tip of the laser receiving portion. By bringing the tip of the laser light receiving part into contact with the packaging container, the measurement distance of the packaging container between the laser light emitting part and the laser light receiving part of the packaging container to be measured sequentially is kept constant, so that the laser light emitting part There is no variation in the distance between the laser receiver and the object to be measured, and the measurement accuracy does not deteriorate.
According to the packaging container gas concentration measuring device according to claim 2, the packaging container gas concentration measuring device capable of more reliably achieving the effect of claim 1 can be configured with a simple structure.
According to the packaging container gas concentration measuring device according to claim 3, the packaging container gas concentration measuring device capable of more reliably achieving the effect of claim 1 can be configured with another simple structure.
According to the gas concentration measuring device for a packaging container according to claim 4, a state in which the tip of the laser emitting portion and the tip of the laser receiving portion are in contact with the packaging container to be sequentially measured. Then, the separation distance between the tip of the laser emitting part and the tip of the laser receiving part is measured, and the value converted from the measured value at the separation distance to a reference constant distance is calculated and corrected. The measurement accuracy does not deteriorate even if the distance of the object to be measured fluctuates between the laser receiving unit.
According to the gas concentration measuring device for a packaging container according to claim 5, the effects of claims 1 to 4 can be exerted on various types of packaging containers.
The packaging machine provided with the gas concentration measuring device for the packaging container according to claim 6 comprises a packaging machine that exhibits the effects of claims 1 to 5.
According to the gas concentration measurement in the packaging machine according to claim 7, the tip of the laser emitting portion and the tip of the laser emitting portion are maintained in a state where the separation distance between the tip of the laser emitting portion and the tip of the laser receiving portion is maintained at a constant distance. By bringing the tip of the laser light receiving part into contact with the packaging container, the measurement distance of the packaging container between the laser light emitting part and the laser light receiving part of the packaging container, which is sequentially measured, is kept constant. There is no fluctuation in the distance of the object to be measured between the laser receiving parts, and the measurement accuracy does not deteriorate.
According to the gas concentration measurement in the packaging machine according to claim 8, the effect of claim 7 can be more reliably achieved.
According to the gas concentration measurement in the packaging machine according to claim 9, the effect of claim 7 can be more easily and surely achieved.
According to the gas concentration measurement in the packaging machine according to claim 10, the tip of the laser emitting portion and the tip of the laser receiving portion are in contact with the packaging container, respectively, with respect to the packaging container to be measured sequentially. , In order to measure the separation distance between the tip of the laser emitting part and the tip of the laser receiving part, and calculate and correct the value converted from the measured value at the separation distance to a reference constant distance, the laser emitting part and The measurement accuracy does not deteriorate even if the distance between the laser receiving parts and the object to be measured fluctuates.
包装機に配置した本発明の包装容器のガス測定装置の一実施例の正面図である。It is a front view of an Example of the gas measuring apparatus of the packaging container of this invention arranged in a packaging machine. 図１に示した包装容器のガス濃度測定装置におけるレーザー式ガス濃度計を説明するための説明図である。It is explanatory drawing for demonstrating the laser type gas densitometer in the gas concentration measuring apparatus of the packaging container shown in FIG. 図１に示した包装容器のガス濃度測定装置を備えた包装機の平面概略図である。It is a top view of the plan of the packaging machine provided with the gas concentration measuring device of the packaging container shown in FIG.
　本発明では、レーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａ間の離隔距離が一定距離に保持された状態で、レーザー発光部３３の先端部３１ａとレーザー受光部３３の先端部３３ａを包装容器Ｈにそれぞれ当接させることで、順次測定される包装容器Ｈの、レーザー発光部３１とレーザー受光部３３間における包装容器Ｈの測定距離が一定に保持されるため、レーザー発光部３１とレーザー受光部３３間における被測定物の距離の変動がなくなり測定精度が劣化することがない包装容器のガス濃度測定装置Ｇ、それを備えた包装機Ｐおよび包装機におけるガス濃度測定方法を実現した。 In the present invention, the tip of the laser emitting portion 33 and the tip of the laser receiving portion 33 are maintained at a constant distance between the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33. By bringing the parts 33a into contact with the packaging container H, the measurement distance of the packaging container H between the laser emitting unit 31 and the laser receiving unit 33 of the packaging container H to be sequentially measured is kept constant, so that the laser emission is performed. A gas concentration measuring device G for a packaging container in which the distance between the unit 31 and the laser receiving unit 33 does not fluctuate and the measurement accuracy does not deteriorate, a packaging machine P equipped with the gas concentration measuring device G, and a gas concentration measuring method in the packaging machine. Was realized.
　本発明の包装容器のガス濃度測定装置を図１または図２に示した一実施例を用いて説明する。
この実施例の包装容器のガス濃度測定装置Ｇは、被包装物を充填しガス置換して包装された包装容器Ｈ内の特定ガスの濃度を順次測定する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３０を有するレーザー発生部３１と、発信器３０から発振されるレーザー光を受光する受信器３２を有するレーザー受光部３３とを備え、レーザー発生部３１とレーザー受光部３３とが包装容器Ｈの両側に対向して配されるレーザー式ガス濃度計Ｍを有し、レーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａ間の離隔距離が一定距離に保持された状態で、レーザー発光部３３の先端部３１ａとレーザー受光部３３の先端部３３ａを包装容器Ｈにそれぞれ当接させることで、順次測定される包装容器Ｈの、レーザー発光部３１とレーザー受光部３３間における包装容器Ｈの測定距離が一定に保持されて包装容器Ｈ内の特定ガスの濃度が測定されるように構成されている。以下、各構成について順次詳述する。 The gas concentration measuring device for the packaging container of the present invention will be described with reference to an embodiment shown in FIG. 1 or FIG.
The gas concentration measuring device G of the packaging container of this embodiment is a gas concentration measuring device that sequentially measures the concentration of a specific gas in the packaging container H that is packed with the object to be packaged and replaced with gas, and has a specific wavelength. A laser generator 31 having a transmitter 30 for irradiating the laser beam of the above, and a laser receiver 33 having a receiver 32 for receiving the laser beam oscillated from the transmitter 30, the laser generator 31 and the laser receiver. 33 has a laser gas densitometer M arranged to face both sides of the packaging container H, and the separation distance between the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 is a constant distance. In the held state, the tip portion 31a of the laser emitting portion 33 and the tip portion 33a of the laser receiving portion 33 are brought into contact with the packaging container H, respectively, so that the laser emitting portion 31 and the laser of the packaging container H measured sequentially are measured. The measurement distance of the packaging container H between the light receiving units 33 is kept constant, and the concentration of the specific gas in the packaging container H is measured. Hereinafter, each configuration will be described in detail in order.
この実施例のガス濃度測定装置被包装物Ｇは、被包装物を充填しガス置換して包装された包装容器Ｈ内の特定ガスの濃度を順次測定するものである。具体的には、この実施例の包装容器のガス濃度測定装置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容器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Ｍ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ガス充填包装機等の各種包装機の検査工程に設置して使用される。 The gas concentration measuring device of this embodiment, the object to be packaged G, sequentially measures the concentration of a specific gas in the packaging container H in which the object to be packaged is filled and replaced with gas. Specifically, the gas concentration measuring device G of the packaging container of this embodiment lasers the oxygen concentration which is a specific gas in the packaging container H packaged by replacing the gas with an inert gas such as nitrogen or carbon dioxide. It is measured by the type gas densitometer M, and is used as a stand-alone measuring device or installed in the inspection process of various packaging machines such as a rotary type gas filling and packaging machine.
包装容器としては、この実施例のように包装袋Ｈである他、瓶または樹脂容器などであってもよい。 The packaging container may be a packaging bag H as in this embodiment, or may be a bottle or a resin container.
レーザー式ガス濃度計Ｍは、図１または図２に示すように、特定波長のレーザー光を照射する発信器３０を有するレーザー発生部３１と、発信器３０から発振されるレーザー光を受光する受信器３２を有するレーザー受光部３３とを備えており、レーザー発生部３１とレーザー受光部３３とが包装容器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 2, the laser gas densitometer M has a laser generator 31 having a transmitter 30 that irradiates a laser beam having a specific wavelength, and a receiver that receives the laser beam oscillated from the transmitter 30. A laser receiving unit 33 having a vessel 32 is provided, and the laser generating unit 31 and the laser receiving unit 33 are arranged so as to face each other on both sides of the packaging container H.
レーザー式ガス濃度計Ｍ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。レーザー式ガス濃度計Ｍは、図２に示すような構成を有しており、レーザー発生部３１とレーザー受光部３３とを備えている。 The laser gas densitometer M uses infrared absorption spectroscopy using a semiconductor laser as a light source. When light of a specific frequency is given to a molecule to be measured, it absorbs light energy and measures the gas concentration. It is for displaying. The laser gas densitometer M has a configuration as shown in FIG. 2, and includes a laser generating unit 31 and a laser receiving unit 33.
具体的には、レーザー発生部３１は、特定波長のレーザー光を発生させてファイバーケーブル７５を介して測定ガスに照射する機能を有し、レーザーダイオードに安定電源を供給する電源ユニット７１、レーザーダイオードから出力されるレーザー光の波長およびその強度を安定するための冷却器ユニット７２、冷却器ユニット７２の冷却器の温度を一定にするための温度コントローラ７３から構成されている。 Specifically, the laser generator 31 has a function of generating laser light of a specific wavelength and irradiating the measurement gas via the fiber cable 75, and supplies a stable power supply to the laser diode, the power supply unit 71 and the laser diode. It is composed of a cooler unit 72 for stabilizing the wavelength and its intensity of the laser beam output from the laser beam, and a temperature controller 73 for keeping the temperature of the cooler of the cooler unit 72 constant.
レーザー受光部３３は、ファイバーケーブル８２を介して測定ガスにより吸収されたレーザー光の強度を測定してその強度からガス濃度を出力させる機能を有し、上記レーザー発生部３１から照射されたレーザー光が測定ガスを通過して吸収されたレーザー光を測定して酸素濃度に変換して表示を行なう計測・表示ユニット８１を有している。 The laser light receiving unit 33 has a function of measuring the intensity of the laser light absorbed by the measuring gas via the fiber cable 82 and outputting the gas concentration from the intensity, and the laser light emitted from the laser generating unit 31. Has a measurement / display unit 81 that measures the laser light absorbed through the measurement gas, converts it into an oxygen concentration, and displays it.
発信器３０から照射する特定波長のレーザー光は、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。発信器３０から発振されるレーザー光を受光する受信器３２としては、図２に示すように反射プリズムを用いる場合もある。７７は発信器３０から照射され測定ガスを透過して受信器（反射プリズム）３２を経てキャッチしたレーザー光を電流に変換して計測・表示ユニット８１に出力する検出部である。 In the case of oxygen gas, the laser beam having a specific wavelength emitted from the transmitter 30 is selected from the wavelength (inherent frequency) range of 760 to 770 nm. As the receiver 32 that receives the laser light oscillated from the transmitter 30, a reflection prism may be used as shown in FIG. Reference numeral 77 denotes a detection unit that is irradiated from the transmitter 30, passes through the measurement gas, converts the laser light caught through the receiver (reflection prism) 32 into an electric current, and outputs the laser light to the measurement / display unit 81.
そして、この実施例の包装容器のガス濃度測定装置Ｇでは、レーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａ間の離隔距離が一定距離に保持された状態で、レーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａを包装容器Ｈにそれぞれ当接させることで、順次測定される包装容器Ｈの、レーザー発光部３１とレーザー受光部３３間における包装容器Ｈの測定距離Ｗが一定に保持されて包装容器Ｈ内の特定ガスの濃度が測定されるように構成されている。これにより、レーザー発光部３１とレーザー受光部３３間における被測定物の距離の変動がなくなり、測定精度を高めることができる。 Then, in the gas concentration measuring device G of the packaging container of this embodiment, the laser emitting unit is in a state where the separation distance between the tip portion 31a of the laser emitting unit 31 and the tip portion 33a of the laser receiving unit 33 is maintained at a constant distance. By bringing the tip portion 31a of 31 and the tip portion 33a of the laser receiving portion 33 into contact with the packaging container H, the packaging container H between the laser emitting portion 31 and the laser receiving portion 33 of the packaging container H, which is sequentially measured, The measurement distance W is kept constant and the concentration of the specific gas in the packaging container H is measured. As a result, the distance of the object to be measured does not fluctuate between the laser emitting unit 31 and the laser receiving unit 33, and the measurement accuracy can be improved.
この実施例のレーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａは、相対的に接近及び離隔可能に構成されている。具体的には、この実施例のレーザー発光部３１は、シリンダーベース３４に固定されており、シリンダーベース３４の下方にはシリンダー３５が配置され、このシリンダー３５によって、シリンダーベース３４およびレーザー発光部３１の先端部３１ａが図１中、左右に往復運動可能に構成されている。他方、この実施例のレーザー受光部３３は、シリンダーベース３６に固定されており、シリンダーベース３６の下方にはシリンダー３７が配置され、このシリンダー３７によって、シリンダーベース３６およびレーザー受光部３３の先端部３３ａが図１中、左右に往復運動可能に構成されている。 The tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 of this embodiment are configured to be relatively close to each other and separated from each other. Specifically, the laser emitting unit 31 of this embodiment is fixed to the cylinder base 34, and the cylinder 35 is arranged below the cylinder base 34. The cylinder 35 causes the cylinder base 34 and the laser emitting unit 31 to emit light. The tip portion 31a of the above is configured to be reciprocating to the left and right in FIG. On the other hand, the laser receiving portion 33 of this embodiment is fixed to the cylinder base 36, and the cylinder 37 is arranged below the cylinder base 36. The cylinder 37 causes the tip portions of the cylinder base 36 and the laser receiving portion 33. 33a is configured to be able to reciprocate left and right in FIG.
そして、この実施例のレーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａは、上記のように、シリンダー３５およびシリンダー３７の作用により相対的に接近及び離隔可能に構成されており、これらの作用により、レーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａ間の離隔距離は、設定された一定距離に保持可能に構成されている。ただし、本発明の包装容器のガス濃度測定装置はこれに限定されるものではなく、レーザー発光部の先端部とレーザー受光部の先端部の配置位置が固定されていることにより、レーザー発光部の先端部とレーザー受光部の先端部間の離隔距離が一定距離に保持されるものでもよい。 The tip 31a of the laser emitting unit 31 and the tip 33a of the laser receiving unit 33 of this embodiment are configured to be relatively close to each other and separated by the action of the cylinder 35 and the cylinder 37 as described above. Due to these actions, the separation distance between the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 can be maintained at a set constant distance. However, the gas concentration measuring device for the packaging container of the present invention is not limited to this, and the laser emitting portion has a fixed arrangement position of the tip of the laser emitting portion and the tip of the laser receiving portion. The separation distance between the tip portion and the tip portion of the laser receiving portion may be maintained at a constant distance.
また、レーザー発光部３１とレーザー受光部３３の先端面は開口しており、レーザー発光部３１とレーザー受光部３３のレーザー経路３１ｂ，３３ｂ内は、包装容器Ｈに当接後にレーザー照射前には真空雰囲気下となるように吸引機構（図示しない）が設けられていることが好ましい。さらに、レーザー経路３１ｂ，３３ｂに、流量調整弁（図示しない）、流量計（図示しない）を介して窒素ガスを充填したタンク（図示しない）を取り付けて、窒素ガスを供給することにより、レーザー経路３１ｂ，３３ｂ内の残存酸素率をほぼ０％として測定精度をより高めるようにしてもよい。 Further, the tip surfaces of the laser emitting unit 31 and the laser receiving unit 33 are open, and the inside of the laser paths 31b and 33b of the laser emitting unit 31 and the laser receiving unit 33 is after contacting the packaging container H and before laser irradiation. It is preferable that a suction mechanism (not shown) is provided so as to create a vacuum atmosphere. Further, a tank (not shown) filled with nitrogen gas is attached to the laser paths 31b and 33b via a flow rate adjusting valve (not shown) and a flow meter (not shown), and the nitrogen gas is supplied to supply the laser path. The residual oxygen rate in 31b and 33b may be set to almost 0% to further improve the measurement accuracy.
対となる挟持体３８，３９は、レーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａを包装容器Ｈにそれぞれ当接させるためのものであり、この実施例では、図１に示すように、レーザー発光部３１またはレーザー受光部３３の下方であって包装容器Ｈの両側にそれぞれ配されている。挟持体３９は、シリンダー４０により図１中左右方向に往復動可能に構成されており、挟持体３９が図１中左方向に移動すると、包装容器Ｈの底部付近の両側が挟持体３８，３９により挟圧され、この作用に伴って包装容器Ｈの上部が左右方向に膨張し、レーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａがそれぞれ包装容器Ｈに当接するように構成されている。 The paired holding bodies 38 and 39 are for bringing the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 into contact with the packaging container H, respectively. As shown, they are arranged below the laser emitting unit 31 or the laser receiving unit 33 and on both sides of the packaging container H, respectively. The holding body 39 is configured to be reciprocating in the left-right direction in FIG. 1 by the cylinder 40, and when the holding body 39 moves in the left direction in FIG. 1, both sides near the bottom of the packaging container H are the holding bodies 38, 39. The upper part of the packaging container H expands in the left-right direction due to this action, and the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 are respectively in contact with the packaging container H. Has been done.
上記のように、レーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａ間の離隔距離が一定距離に保持された状態で、対となる挟持体３８，３９により包装容器Ｈを挟圧することにより、レーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａが包装容器Ｈにそれぞれ当接するため、順次測定される包装容器Ｈのレーザー発光部３１とレーザー受光部３３間における包装容器Ｈの測定距離が一定に保持される。これにより、レーザー発光部３１とレーザー受光３３部間における被測定物の距離の変動がなくなり測定精度を向上させることができる。ただし、本発明の包装容器のガス濃度測定装置はこれに限定されるものではなく、包装容器Ｈを挟圧する対となる挟持体３８，３９を有さず、レーザー発光部３１とレーザー受光部３３が相対的に接近及び離隔可能に構成され、順次測定される包装容器Ｈに対して、レーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａ間の距離が一定距離となるように両者が接近することにより、レーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａが包装容器Ｈにそれぞれ当接するように構成されたものでもよい。 As described above, the packaging container H is sandwiched between the pair of holding bodies 38 and 39 in a state where the separation distance between the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 is maintained at a constant distance. By applying pressure, the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 come into contact with the packaging container H, respectively, so that between the laser emitting portion 31 and the laser receiving portion 33 of the packaging container H to be sequentially measured. The measurement distance of the packaging container H is kept constant. As a result, the distance between the laser emitting unit 31 and the laser receiving unit 33 does not fluctuate, and the measurement accuracy can be improved. However, the gas concentration measuring device for the packaging container of the present invention is not limited to this, and does not have a pair of holding bodies 38 and 39 for sandwiching the packaging container H, and the laser emitting unit 31 and the laser receiving unit 33 do not have. Are relatively close to each other and can be separated from each other, and the distance between the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 is a constant distance with respect to the packaging container H to be measured sequentially. When both are close to each other, the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 may be configured to come into contact with each other of the packaging container H.
　つぎに、本発明のガス濃度測定装置の他の実施例について説明する。
この実施例のガス濃度測定装置は、被包装物を充填しガス置換して包装された包装容器Ｈ内の特定ガスの濃度を順次測定する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３０を有するレーザー発生部３１と、発信器３０から発振されるレーザー光を受光する受信器３２を有するレーザー受光部３３とを備え、レーザー発生部３１とレーザー受光部３３とが包装容器Ｈの両側に対向して配されるレーザー式ガス濃度計Ｍを有し、レーザー発光部３１とレーザー受光部３３は相対的に接近及び離隔可能に構成されており、順次測定される包装容器Ｈに対して、レーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａを包装容器Ｈにそれぞれ当接させた状態で、レーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａ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容器Ｈ内の特定ガスの濃度が測定されるように構成されていることを特徴とする包装容器のガス濃度測定装置である。前述したガス濃度測定装置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。 Next, another embodiment of the gas concentration measuring device of the present invention will be described.
The gas concentration measuring device of this embodiment is a gas concentration measuring device that sequentially measures the concentration of a specific gas in a packaging container H that is packed with an object to be packaged and replaced with gas, and emits laser light of a specific wavelength. A laser generator 31 having a transmitter 30 to irradiate and a laser receiver 33 having a receiver 32 to receive the laser light oscillated from the transmitter 30 are provided, and the laser generator 31 and the laser receiver 33 are packaged. A packaging container having a laser gas densitometer M arranged opposite to each other on both sides of the container H, the laser emitting unit 31 and the laser receiving unit 33 are configured to be relatively close to each other and separated from each other, and are sequentially measured. With respect to H, the tip 31a of the laser emitting portion 31 and the tip 33a of the laser receiving portion 33 are in contact with the packaging container H, respectively, and the tip 31a of the laser emitting portion 31 and the tip of the laser receiving portion 33 are brought into contact with each other. The concentration of the specific gas in the packaging container H is measured by measuring the separation distance between the portions 33a, calculating a value converted from the measured value at the separation distance into a reference constant distance, and correcting the value. It is a gas concentration measuring device for a packaging container, which is characterized in that the laser is used. The same components as those of the gas concentration measuring device G described above are designated by the same reference numerals and the description thereof will be omitted.
この実施例のガス濃度測定装置と前述したガス濃度測定装置Ｇとの相違点は、ガス濃度測定装置Ｇでは、レーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａ間の離隔距離が一定距離に保持された状態で、レーザー発光部３３の先端部３１ａとレーザー受光部３３の先端部３３ａを包装容器Ｈにそれぞれ当接させるが、この実施例では、順次測定される包装容器Ｈが搬送されてくるたびに、被測定物（包装容器Ｈ）の異なる幅（ｗ）に応じて、レーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａを移動させて包装容器Ｈに当接させる。そして、この状態でレーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａ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容器Ｈ内の特定ガスの濃度が測定されるように構成されている。なお、被測定物（包装容器Ｈ）の異なる幅（ｗ）に対応したレーザー発光部３１とレーザー受光部３３の移動は、位置センサなどにより被測定物（包装容器Ｈ）の異なる幅（ｗ）を検出し、その検出値に基づいてレーザー発光部３１とレーザー受光部３３を往復動させる方法やサーボモータを使用する方法などが好適である。 The difference between the gas concentration measuring device of this embodiment and the gas concentration measuring device G described above is that in the gas concentration measuring device G, the separation distance between the tip 31a of the laser emitting unit 31 and the tip 33a of the laser receiving unit 33 Is held at a certain distance, the tip portion 31a of the laser emitting portion 33 and the tip portion 33a of the laser receiving portion 33 are brought into contact with the packaging container H, respectively. In this embodiment, the packaging container H to be sequentially measured is brought into contact with each other. The tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 are moved according to the different widths (w) of the object to be measured (packaging container H) each time. To abut. Then, in this state, the separation distance between the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 is measured, and a numerical value converted from the measured value at the separation distance into a reference constant distance is calculated. It is configured so that the concentration of the specific gas in the packaging container H is measured by the correction. The movement of the laser emitting unit 31 and the laser receiving unit 33 corresponding to the different widths (w) of the object to be measured (packaging container H) is such that the different widths (w) of the objects to be measured (packaging container H) are moved by a position sensor or the like. Is preferable, and a method of reciprocating the laser emitting unit 31 and the laser receiving unit 33 based on the detected value, a method of using a servomotor, or the like is preferable.
具体的には、この実施例では、レーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａ間の離隔距離は、例えばシリンダー３５，３７によるレーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａの移動距離あるいは移動後（当接後）のレーザー光の長さ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）の正しい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、包装容器Ｈによってレーザー発生部３１とレーザー受光部３３間における被測定物（包装容器Ｈ）の幅（ｗ）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ように構成されている。 Specifically, in this embodiment, the separation distance between the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 is, for example, the laser receiving distance between the tip portion 31a of the laser emitting portion 31 by the cylinders 35 and 37 and the laser receiving portion 31a. Calculated based on the moving distance of the tip 33a of the part 33 or the length of the laser beam after moving (after contact), separation distance: measured value = reference constant distance: gas concentration X (converted) The correct numerical value of the gas concentration X (gas concentration X = measured value × reference constant distance / separation distance) is obtained and displayed from the corrected numerical value). As a result, even if the width (w) of the object to be measured (packaging container H) between the laser generating unit 31 and the laser receiving unit 33 differs depending on the packaging container H, the gas concentration can be measured with high accuracy while remaining different. It is configured as follows.
　つぎに、本発明の包装容器のガス濃度測定装置を備えた包装機の一実施例について説明する。
この実施例の包装機Ｐは、図１または図３に示すように、ロータリー式ガス充填包装機である。この包装機Ｐは、給袋工程（１）、賞味期限等の印字工程（２）、包装袋の開口工程（３）、被包装物の充填工程（４）、押込み工程（５）、ノズル挿入及び仮付けシール工程（６）、ガス置換・モミホグシ工程（７）～（１３）、トップシール工程（１４）、シール冷却・ガス置換検知工程（１５）、製品取出し工程（１６）の１６工程を経て製品（例えばレトルト食品）を量産する包装機である。 Next, an embodiment of the packaging machine provided with the gas concentration measuring device for the packaging container of the present invention will be described.
The packaging machine P of this embodiment is a rotary gas filling and packaging machine as shown in FIG. 1 or FIG. This packaging machine P has a bag feeding process (1), a printing process such as an expiration date (2), a packaging bag opening process (3), an object filling process (4), a pushing process (5), and a nozzle insertion. And 16 steps of temporary attachment seal process (6), gas replacement / fir hogushi process (7) to (13), top seal process (14), seal cooling / gas replacement detection process (15), product take-out process (16). It is a packaging machine that mass-produces products (for example, retort foods) through the process.
この包装機Ｐの機台５１上には、縦向きの間欠回転軸（図示しない）を回転自由に支持したスタンド５３を設け、その間欠回転軸に取り付けた円盤状回転体（移動体）５２には、包装容器である包装袋Ｈを掴着又は釈放するための１６個のグリップ対ｇが等角度間隔で放射方向に突出するように設けられている。図１中、符号４１はシール装置である。そして、包装容器のガス濃度測定装置Ｇは、シール冷却・ガス置換検知工程（１５）に配置されている。 On the machine base 51 of the packaging machine P, a stand 53 that freely rotates an intermittent rotating shaft (not shown) in a vertical direction is provided, and a disk-shaped rotating body (moving body) 52 attached to the intermittent rotating shaft is provided. Is provided so that 16 grips to g for gripping or releasing the packaging bag H, which is a packaging container, project in the radial direction at equal angular intervals. In FIG. 1, reference numeral 41 is a sealing device. The gas concentration measuring device G for the packaging container is arranged in the seal cooling / gas replacement detection step (15).
　この実施例の包装機Ｐは、移動体（円盤状回転体）５２を間欠回転駆動させるロータリー式包装機であるが、本発明の包装機はこれに限定されるものではなく、公知の直線移動方式（トラック方式）の包装機でもよい。直線移動方式の給袋包装機とは、例えば直線部とその両端の半円形部からなる環状通路を水平移動する移動体に多数のグリップ対を直立姿勢または水平姿勢に変換自在に設け、給袋工程で供給される包装袋を各グリップ対に支持して当該包装袋を開口工程、充填工程、袋口のシール工程等の各工程に間欠停止させて被包装物の袋詰めを行うようにした構造のものをいう。 The wrapping machine P of this embodiment is a rotary wrapping machine that intermittently drives a moving body (disk-shaped rotating body) 52, but the wrapping machine of the present invention is not limited to this, and is known for linear movement. A type (truck method) packaging machine may be used. A linearly moving bag wrapping machine is, for example, a moving body that horizontally moves in an annular passage consisting of a straight portion and semicircular portions at both ends thereof, and is provided with a large number of grip pairs that can be freely converted into an upright posture or a horizontal posture. The packaging bag supplied in the process is supported by each grip pair, and the packaging bag is intermittently stopped in each process such as the opening process, the filling process, and the bag mouth sealing process to pack the packaged object. It refers to a structure.
また、本発明の包装機は、シート状のフィルムを製袋しつつ被包装物を当該袋内に充填包装する縦ピロー包装機であってもよく、包装機の製品排出経路に包装容器のガス濃度測定装置Ｇが配置されたものであってよい。 Further, the wrapping machine of the present invention may be a vertical pillow wrapping machine that fills and wraps the object to be packaged in the bag while making a sheet-shaped film, and the gas of the wrapping container is applied to the product discharge path of the wrapping machine. The concentration measuring device G may be arranged.
さらに、本発明の包装機は、シート状のフィルムを製袋しつつ被包装物を当該袋内に充填包装する横ピロー包装機であってもよく、包装機の製品排出経路であるコンベアの上方に包装容器のガス濃度測定装置Ｇが配置されたものであってよい。 Further, the wrapping machine of the present invention may be a horizontal pillow wrapping machine that fills and wraps the object to be packaged in the bag while making a sheet-shaped film, and is above the conveyor, which is a product discharge path of the wrapping machine. The gas concentration measuring device G of the packaging container may be arranged in the package.
さらに、本発明の包装機は、飲料等を瓶ｉに充填包装する瓶詰め包装機であってもよく、縦向き状態の瓶ｉを通過させるコンベアの上方であって製品排出路付近に包装容器のガス濃度測定装置Ｇが配置されたものであってよい。 Further, the wrapping machine of the present invention may be a bottling wrapping machine that fills and wraps a beverage or the like in a bottle i, and the packaging container is located above the conveyor through which the bottle i in the vertical orientation is passed and near the product discharge path. The gas concentration measuring device G may be arranged.
　つぎに、本発明の包装機におけるガス濃度測定方法の一実施例について説明する。
この実施例の包装機におけるガス濃度測定方法は、被包装物を充填しガス置換して包装された包装容器Ｈ内の特定ガスの濃度を測定装置（レーザー式ガス濃度計Ｍ）により順次測定する包装機Ｐにおけるガス濃度測定方法であって、測定装置（レーザー式ガス濃度計Ｍ）は、特定波長のレーザー光を照射する発信器３０を有するレーザー発生部３１と、発信器３０から発振されるレーザー光を受光する受信器３２を有するレーザー受光部３３とを備え、レーザー発生部３１とレーザー受光部３３とが包装容器Ｈの両側に対向して配されるレーザー式ガス濃度計Ｍを用い、包装容器Ｈ内に被包装物を充填して不活性ガスによるガス置換を行い開口部をシールした後において、レーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａ間の離隔距離が一定距離に保持された状態で、レーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａを包装容器Ｈにそれぞれ当接させることで、順次測定される包装容器Ｈのレーザー発光部３１とレーザー受光部３３間における包装容器Ｈの測定距離が一定に保持されて包装容器Ｈ内の特定ガスの濃度が測定されることを特徴とする包装機におけるガス濃度測定方法である。以下、この実施例の包装機におけるガス濃度測定方法を説明するが、前述した包装容器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。 Next, an embodiment of the gas concentration measuring method in the packaging machine of the present invention will be described.
In the gas concentration measuring method in the packaging machine of this embodiment, the concentration of a specific gas in the packaging container H filled with the object to be packaged and replaced with gas is sequentially measured by a measuring device (laser type gas concentration meter M). In the gas concentration measuring method in the packaging machine P, the measuring device (laser type gas densitometer M) is oscillated from a laser generator 31 having a transmitter 30 that irradiates a laser beam of a specific wavelength and a transmitter 30. Using a laser gas densitometer M provided with a laser light receiving unit 33 having a receiver 32 for receiving laser light, and a laser generating unit 31 and a laser receiving unit 33 arranged to face each other on both sides of the packaging container H. After filling the packaging container H with the object to be packaged, replacing the gas with an inert gas to seal the opening, the separation distance between the tip 31a of the laser emitting portion 31 and the tip 33a of the laser receiving portion 33 is increased. The laser emitting portion 31 of the packaging container H is sequentially measured by bringing the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 into contact with each other while being held at a fixed distance. This is a gas concentration measuring method in a packaging machine, characterized in that the measurement distance of the packaging container H between the laser receiving unit 33 and the laser receiving unit 33 is kept constant and the concentration of a specific gas in the packaging container H is measured. Hereinafter, the gas concentration measuring method in the packaging machine of this embodiment will be described, but the same components as those of the gas concentration measuring device G of the packaging container described above are designated by the same reference numerals and the description thereof will be omitted.
この実施例の包装機におけるガス濃度測定方法では、包装機Ｐのグリップ対ｇにより包装容器Ｈの上部両側が支持されて垂直姿勢を保持した状態で、配置位置が固定されているレーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａ間に包装容器Ｈが間欠的に搬送されてくるたびに、挟持体３９が図１中左方向に移動するため、包装容器Ｈの底部付近の両側が挟持体３８，３９により挟圧される。この作用に伴って包装容器Ｈの上部が左右方向に膨張し、レーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａがそれぞれ包装容器Ｈに当接することでレーザー発光部３１とレーザー受光部３３間における包装容器Ｈの測定距離が一定に保持される。その状態でレーザー式ガス濃度計Ｍにより酸素濃度を測定することにより、順次搬送されてくる包装容器Ｈに対して、レーザー発光部３１とレーザー受光部３２間における被測定物の距離の変動がなくなることから、測定精度を高めることができる。
なお、本発明の包装機におけるガス濃度測定方法はこれに限定されるものではなく、順次測定される前記包装容器に対して、レーザー発光部の先端部とレーザー受光部の先端部間の距離が一定距離となるように接近することにより、レーザー発光部の先端部と前記レーザー受光部の先端部が前記包装容器にそれぞれ当接する工程を有していてもよい。 In the gas concentration measuring method in the packaging machine of this embodiment, the laser emitting unit 31 whose arrangement position is fixed in a state where both upper sides of the packaging container H are supported by the grip vs. g of the packaging machine P and the vertical posture is maintained. Each time the packaging container H is intermittently conveyed between the tip portion 31a of the container H and the tip portion 33a of the laser receiving portion 33, the holding body 39 moves to the left in FIG. Both sides are sandwiched by the sandwiching bodies 38 and 39. Along with this action, the upper part of the packaging container H expands in the left-right direction, and the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 abut on the packaging container H, respectively, so that the laser emitting portion 31 and the laser are used. The measurement distance of the packaging container H between the light receiving portions 33 is kept constant. By measuring the oxygen concentration with the laser gas densitometer M in that state, the distance of the object to be measured between the laser emitting unit 31 and the laser receiving unit 32 does not fluctuate with respect to the packaging container H that is sequentially conveyed. Therefore, the measurement accuracy can be improved.
The method for measuring the gas concentration in the packaging machine of the present invention is not limited to this, and the distance between the tip of the laser emitting portion and the tip of the laser receiving portion with respect to the packaging container to be sequentially measured is not limited to this. The step of bringing the tip of the laser emitting portion and the tip of the laser receiving portion into contact with the packaging container may be provided by approaching them so as to have a certain distance.
　さらに、本発明の包装機におけるガス濃度測定方法の他の実施例について説明する。
　この実施例の包装機におけるガス濃度測定方法は、被包装物を充填しガス置換して包装された包装容器Ｈ内の特定ガスの濃度を測定装置（レーザー式ガス濃度計Ｍ）により順次測定する包装機におけるガス濃度測定方法であって、測定装置（レーザー式ガス濃度計Ｍ）は、特定波長のレーザー光を照射する発信器３０を有するレーザー発生部３１と、発信器３０から発振されるレーザー光を受光する受信器３２を有するレーザー受光部３３とを備え、レーザー発生部３１とレーザー受光部３３とが包装容器Ｈの両側に対向して配されるレーザー式ガス濃度計Ｍを用い、包装容器Ｈ内に被包装物を充填して不活性ガスによるガス置換を行い開口部をシールした後において、順次測定される包装容器Ｈに対して、レーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａを包装容器Ｈにそれぞれ当接させた状態で、レーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａ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前記包装容器内の特定ガスの濃度が測定されることを特徴とする包装機におけるガス濃度測定方法である。以下、この実施例の包装機におけるガス濃度測定方法を説明するが、前述した包装容器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。 Further, another embodiment of the gas concentration measuring method in the packaging machine of the present invention will be described.
In the gas concentration measuring method in the packaging machine of this embodiment, the concentration of a specific gas in the packaging container H filled with the object to be packaged and replaced with gas is sequentially measured by a measuring device (laser type gas concentration meter M). A method for measuring gas concentration in a packaging machine, the measuring device (laser type gas concentration meter M) is a laser generator 31 having a transmitter 30 that irradiates a laser beam of a specific wavelength, and a laser oscillated from the transmitter 30. Packaging using a laser gas densitometer M including a laser light receiving unit 33 having a receiver 32 for receiving light, and a laser generating unit 31 and a laser receiving unit 33 arranged to face each other on both sides of the packaging container H. After filling the container H with an object to be packaged, replacing the gas with an inert gas to seal the opening, the tip portion 31a of the laser emitting portion 31 and the laser receiving portion 31 a with respect to the packaging container H to be sequentially measured. With the tip 33a of 33 in contact with the packaging container H, the separation distance between the tip 31a of the laser emitting unit 31 and the tip 33a of the laser receiving unit 33 is measured, and the distance measured from the measured value at the separation distance is measured. This is a gas concentration measuring method in a packaging machine, characterized in that the concentration of a specific gas in the packaging container is measured by calculating and correcting a numerical value converted into a reference constant distance. Hereinafter, the gas concentration measuring method in the packaging machine of this embodiment will be described, but the same components as those of the gas concentration measuring device G of the packaging container described above are designated by the same reference numerals and the description thereof will be omitted.
この実施例の包装機におけるガス濃度測定方法では、包装機Ｐのグリップ対ｇにより包装容器Ｈの上部両側が支持されて垂直姿勢を保持した状態で、レーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａ間に包装容器Ｈが間欠的に搬送されてくるたびに、被測定物（包装容器Ｈ）の異なる幅（ｗ）に応じて、レーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａがシリンダー３５，３７の作用により移動して包装容器Ｈに当接する。そして、この状態でレーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａ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容器Ｈ内の特定ガスの濃度が測定される。 In the gas concentration measuring method in the packaging machine of this embodiment, the tip portion 31a of the laser emitting unit 31 and the laser receiving light are received in a state where both upper sides of the packaging container H are supported by the grip pair g of the packaging machine P and the vertical posture is maintained. Each time the packaging container H is intermittently conveyed between the tip portions 33a of the portion 33, the tip portion 31a of the laser light emitting portion 31 and the laser are used according to the different widths (w) of the object to be measured (packaging container H). The tip portion 33a of the light receiving portion 33 moves by the action of the cylinders 35 and 37 and comes into contact with the packaging container H. Then, in this state, the separation distance between the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 is measured, and a numerical value converted from the measured value at the separation distance into a reference constant distance is calculated. By correcting, the concentration of the specific gas in the packaging container H is measured.
具体的には、レーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａ間の離隔距離は、例えばシリンダー３５，３７によるレーザー発光部３１の先端部３１ａとレーザー受光部３３の先端部３３ａの移動距離あるいは移動後（当接後）のレーザー光の長さ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）の正しい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、包装容器Ｈによってレーザー発生部３１とレーザー受光部３３間における被測定物（包装容器Ｈ）の幅（ｗ）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ように構成されている。なお、被測定物（包装容器Ｈ）の異なる幅（ｗ）に対応したレーザー発光部３１とレーザー受光部３３の移動は、位置センサなどにより被測定物（包装容器Ｈ）の異なる幅（ｗ）を検出し、その検出値に基づいてレーザー発光部３１とレーザー受光部３３を往復動させる方法やサーボモータを使用する方法などが好適である。 Specifically, the separation distance between the tip portion 31a of the laser emitting portion 31 and the tip portion 33a of the laser receiving portion 33 is, for example, the tip portion 31a of the laser emitting portion 31 and the tip portion of the laser receiving portion 33 by the cylinders 35 and 37. Calculated based on the movement distance of 33a or the length of the laser beam after movement (after contact), separation distance: measured value = reference constant distance: gas concentration X (converted and corrected value) Therefore, the correct numerical value of the gas concentration X (gas concentration X = measured value × reference constant distance / separation distance) is obtained and displayed. As a result, even if the width (w) of the object to be measured (packaging container H) between the laser generating unit 31 and the laser receiving unit 33 differs depending on the packaging container H, the gas concentration can be measured with high accuracy while remaining different. It is configured as follows. The movement of the laser emitting unit 31 and the laser receiving unit 33 corresponding to the different widths (w) of the object to be measured (packaging container H) is such that the different widths (w) of the objects to be measured (packaging container H) are moved by a position sensor or the like. Is preferable, and a method of reciprocating the laser emitting unit 31 and the laser receiving unit 33 based on the detected value, a method of using a servomotor, or the like is preferable.
Ｇ　　　　　　　包装容器のガス濃度測定装置
Ｍ　　　　　　　レーザー式ガス濃度計
Ｐ　　　　　　　包装機
Ｈ　　　　　　　包装容器
ｇ　　　　　　　グリップ対
３０　　　　　　発信器
３１　　　　　　レーザー発信部
３１ａ　　　　　レーザー発光部の先端部
３２　　　　　　受信器
３３　　　　　　レーザー受信部
３３ａ　　　　　レーザー受光部の先端部
３４　　　　　　シリンダーベース
３５　　　　　　シリンダー
３６　　　　　　シリンダーベース
３７　　　　　　シリンダー
３８，３９　　　対となる挟持体　　　　　　
４０　　　　　　シリンダー
４１　　　　　　シール装置
５１　　　　　　機台
５２　　　　　　円盤状回転体（移動体）
５３　　　　　　スタンド G Gas concentration measuring device for packaging container M Laser gas concentration meter P Packaging machine H Packaging container g Grip pair 30 Transmitter 31 Laser transmitter 31a Laser emitter tip 32 Receiver 33 Laser receiver 33a Laser receiver tip Part 34 Cylinder base 35 Cylinder 36 Cylinder base 37 Cylinders 38, 39 Paired sandwiches
40 Cylinder 41 Sealing device 51 Machine stand 52 Disc-shaped rotating body (moving body)
53 stand

Claims (10)

  1. 被包装物を充填しガス置換して包装された包装容器内の特定ガスの濃度を順次測定する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容器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、
    前記レーザー発光部の先端部と前記レーザー受光部の先端部間の離隔距離が一定距離に保持された状態で、前記レーザー発光部の先端部と前記レーザー受光部の先端部を前記包装容器にそれぞれ当接させることで、順次測定される前記包装容器の前記レーザー発光部と前記レーザー受光部間における前記包装容器の測定距離が一定に保持されて前記包装容器内の特定ガスの濃度が測定されるように構成されていることを特徴とする包装容器のガス濃度測定装置。     It is a gas concentration measuring device that sequentially measures the concentration of a specific gas in a packaging container filled with an object to be packaged and replaced with gas.
    A laser generator having a transmitter that irradiates a laser beam of a specific wavelength and a laser receiver having a receiver that receives the laser beam oscillated from the transmitter are provided, and the laser generator and the laser receiver Has a laser gas densitometer arranged facing each other on both sides of the packaging container.
    While the separation distance between the tip of the laser emitting portion and the tip of the laser receiving portion is maintained at a constant distance, the tip of the laser emitting portion and the tip of the laser receiving portion are placed in the packaging container, respectively. By abutting, the measurement distance of the packaging container between the laser emitting portion and the laser receiving portion of the packaging container to be sequentially measured is kept constant, and the concentration of the specific gas in the packaging container is measured. A gas concentration measuring device for a packaging container, which is characterized in that it is configured as follows.
  2. 前記包装容器のガス濃度測定装置は、前記包装容器の両側に配された対となる挟持体を有し、前記レーザー発光部の先端部と前記レーザー受光部の先端部間の離隔距離が一定距離に保持された状態で、前記対となる挟持体により前記包装容器を挟圧することにより、前記レーザー発光部の先端部と前記レーザー受光部の先端部が前記包装容器にそれぞれ当接するように構成されている請求項１に記載の包装容器のガス濃度測定装置。 The gas concentration measuring device of the packaging container has a pair of sandwiches arranged on both sides of the packaging container, and the separation distance between the tip of the laser emitting portion and the tip of the laser receiving portion is a constant distance. By sandwiching the packaging container with the pair of sandwiching bodies while being held by the container, the tip of the laser emitting portion and the tip of the laser receiving portion are configured to come into contact with the packaging container, respectively. The gas concentration measuring device for a packaging container according to claim 1.
  3. 前記レーザー発光部と前記レーザー受光部は相対的に接近及び離隔可能に構成されており、順次測定される前記包装容器に対して、前記レーザー発光部の先端部と前記レーザー受光部の先端部間の距離が一定距離となるように接近することにより、前記レーザー発光部の先端部と前記レーザー受光部の先端部が前記包装容器にそれぞれ当接するように構成されている請求項１に記載の包装容器のガス濃度測定装置。 The laser emitting portion and the laser receiving portion are configured to be relatively close to each other and separated from each other, and between the tip of the laser emitting portion and the tip of the laser receiving portion with respect to the packaging container to be measured sequentially. The packaging according to claim 1, wherein the tip of the laser emitting portion and the tip of the laser receiving portion are respectively configured to come into contact with the packaging container by approaching the laser emitting portion so as to have a constant distance. Container gas concentration measuring device.
  4. 被包装物を充填しガス置換して包装された包装容器内の特定ガスの濃度を順次測定する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容器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、
    前記レーザー発光部と前記前記レーザー受光部は相対的に接近及び離隔可能に構成されており、順次測定される前記包装容器に対して、前記レーザー発光部の先端部と前記レーザー受光部の先端部を前記包装容器にそれぞれ当接させた状態で、前記レーザー発光部の先端部と前記レーザー受光部の先端部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前記包装容器内の特定ガスの濃度が測定されるように構成されていることを特徴とする包装容器のガス濃度測定装置。     It is a gas concentration measuring device that sequentially measures the concentration of a specific gas in a packaging container filled with an object to be packaged and replaced with gas.
    A laser generator having a transmitter that irradiates a laser beam of a specific wavelength and a laser receiver having a receiver that receives the laser beam oscillated from the transmitter are provided, and the laser generator and the laser receiver Has a laser gas densitometer arranged facing each other on both sides of the packaging container.
    The laser emitting portion and the laser receiving portion are configured so as to be relatively close to each other and separated from each other, and the tip portion of the laser emitting portion and the tip portion of the laser receiving portion are relative to the packaging container to be measured sequentially. Is in contact with the packaging container, the separation distance between the tip of the laser emitting portion and the tip of the laser receiving portion is measured, and the measured value at the separation distance is converted into a reference constant distance. A gas concentration measuring device for a packaging container, characterized in that the concentration of a specific gas in the packaging container is measured by calculating and correcting the numerical value.
  5. 前記包装容器は、包装袋、瓶または樹脂容器である請求項１ないし４のいずれかに記載の包装容器のガス濃度測定装置。 The gas concentration measuring device for a packaging container according to any one of claims 1 to 4, wherein the packaging container is a packaging bag, a bottle, or a resin container.
  6. 前記請求項１ないし５のいずれかに記載の包装容器のガス濃度測定装置を備えていることを特徴とする包装機。 A packaging machine comprising the gas concentration measuring device for a packaging container according to any one of claims 1 to 5.
  7. 被包装物を充填しガス置換して包装された包装容器内の特定ガスの濃度を測定装置により順次測定する包装機におけるガス濃度測定方法であって、
    前記測定装置は、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前記包装容器の両側に対向して配されるレーザー式ガス濃度計を用い、
    前記包装容器内に被包装物を充填して不活性ガスによるガス置換を行い開口部をシールした後において、前記レーザー発光部の先端部と前記レーザー受光部の先端部間の離隔距離が一定距離に保持された状態で、前記レーザー発光部の先端部と前記レーザー受光部の先端部を前記包装容器にそれぞれ当接させることで、順次測定される前記包装容器の前記レーザー発光部と前記レーザー受光部間における前記包装容器の測定距離が一定に保持されて前記包装容器内の特定ガスの濃度が測定されることを特徴とする包装機におけるガス濃度測定方法。     It is a gas concentration measuring method in a packaging machine in which the concentration of a specific gas in a packaging container filled with an object to be packaged and replaced with gas is sequentially measured by a measuring device.
    The measuring device includes a laser generator having a transmitter that irradiates a laser beam having a specific wavelength, and a laser receiver having a receiver that receives the laser beam oscillated from the transmitter. Using a laser gas densitometer in which the laser light receiving portion is arranged so as to face both sides of the packaging container,
    After filling the packaging container with the object to be packaged, replacing the gas with an inert gas to seal the opening, the separation distance between the tip of the laser emitting portion and the tip of the laser receiving portion is a constant distance. By bringing the tip of the laser emitting portion and the tip of the laser receiving portion into contact with the packaging container while being held in the packaging container, the laser emitting portion and the laser receiving portion of the packaging container are sequentially measured. A method for measuring a gas concentration in a packaging machine, wherein the measurement distance of the packaging container is kept constant between parts and the concentration of a specific gas in the packaging container is measured.
  8. 前記包装機におけるガス濃度測定方法は、順次測定される前記包装容器に対して、前記レーザー発光部の先端部と前記レーザー受光部の先端部間の離隔距離が一定距離に保持された状態で、前記包装容器の両側に配された対となる挟持体によって前記包装容器が挟圧されることにより、前記レーザー発光部の先端部と前記レーザー受光部の先端部が前記包装容器にそれぞれ当接される工程を有する請求項７に記載の包装機におけるガス濃度測定方法。 In the method for measuring the gas concentration in the packaging machine, the separation distance between the tip of the laser emitting portion and the tip of the laser receiving portion is maintained at a constant distance with respect to the packaging container to be sequentially measured. By sandwiching the packaging container with a pair of sandwiches arranged on both sides of the packaging container, the tip of the laser emitting portion and the tip of the laser receiving portion are brought into contact with the packaging container, respectively. The method for measuring a gas concentration in a packaging machine according to claim 7, further comprising the process.
  9. 前記包装機におけるガス濃度測定方法は、順次測定される前記包装容器に対して、前記レーザー発光部の先端部と前記レーザー受光部の先端部間の距離が一定距離となるように接近することにより、前記レーザー発光部の先端部と前記レーザー受光部の先端部が前記包装容器にそれぞれ当接する工程を有する請求項７に記載の包装機におけるガス濃度測定方法。 The method for measuring the gas concentration in the packaging machine is to approach the packaging container to be sequentially measured so that the distance between the tip of the laser emitting portion and the tip of the laser receiving portion is a constant distance. The method for measuring gas concentration in a packaging machine according to claim 7, further comprising a step of contacting the tip of the laser emitting portion and the tip of the laser receiving portion with the packaging container.
  10. 被包装物を充填しガス置換して包装された包装容器内の特定ガスの濃度を測定装置により順次測定する包装機におけるガス濃度測定方法であって、
    前記測定装置は、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前記包装容器の両側に対向して配されるレーザー式ガス濃度計を用い、
    前記包装容器内に被包装物を充填して不活性ガスによるガス置換を行い開口部をシールした後において、順次測定される前記包装容器に対して、前記レーザー発光部の先端部と前記レーザー受光部の先端部を前記包装容器にそれぞれ当接させた状態で、前記レーザー発光部の先端部と前記レーザー受光部の先端部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前記包装容器内の特定ガスの濃度が測定されることを特徴とする包装機におけるガス濃度測定方法。     It is a gas concentration measuring method in a packaging machine in which the concentration of a specific gas in a packaging container filled with an object to be packaged and replaced with gas is sequentially measured by a measuring device.
    The measuring device includes a laser generator having a transmitter that irradiates a laser beam having a specific wavelength, and a laser receiver having a receiver that receives the laser beam oscillated from the transmitter. Using a laser gas densitometer in which the laser light receiving portion is arranged so as to face both sides of the packaging container,
    After filling the packaging container with an object to be packaged, replacing the gas with an inert gas to seal the opening, the tip of the laser emitting portion and the laser receiving light are received with respect to the packaging container to be sequentially measured. With the tip of the portion in contact with the packaging container, the separation distance between the tip of the laser emitting portion and the tip of the laser receiving portion is measured, and the measured value at the separation distance serves as a reference. A method for measuring a gas concentration in a packaging machine, which comprises measuring the concentration of a specific gas in the packaging container by calculating and correcting a numerical value converted into a fixed distance.
PCT/JP2020/039932 2019-10-24 2020-10-23 Packaging container gas concentration measuring device, packaging machine provided with same, and method for measuring gas concentration in packaging machine WO2021079994A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022239759A1 (en) * 2021-05-10 2022-11-17 ゼネラルパッカー株式会社 Pillow packaging bag gas concentration measuring method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009014589A (en) * 2007-07-06 2009-01-22 General Packer Co Ltd Gas concentration measuring method in packaging machine
JP2010038846A (en) * 2008-08-08 2010-02-18 Hitachi Zosen Corp Nondestructive inspection device of oxygen concentration within bag-like container
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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102406989B1 (en) * 2016-11-04 2022-06-10 윌코아게 Gas concentration measuring device and method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009014589A (en) * 2007-07-06 2009-01-22 General Packer Co Ltd Gas concentration measuring method in packaging machine
JP2010038846A (en) * 2008-08-08 2010-02-18 Hitachi Zosen Corp Nondestructive inspection device of oxygen concentration within bag-like container
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022239759A1 (en) * 2021-05-10 2022-11-17 ゼネラルパッカー株式会社 Pillow packaging bag gas concentration measuring method

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