WO2010016184A1 - 袋状容器内における酸素濃度の非破壊検査装置 - Google Patents
袋状容器内における酸素濃度の非破壊検査装置 Download PDFInfo
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- WO2010016184A1 WO2010016184A1 PCT/JP2009/002881 JP2009002881W WO2010016184A1 WO 2010016184 A1 WO2010016184 A1 WO 2010016184A1 JP 2009002881 W JP2009002881 W JP 2009002881W WO 2010016184 A1 WO2010016184 A1 WO 2010016184A1
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- WIPO (PCT)
- Prior art keywords
- container
- bag
- oxygen concentration
- laser
- inspection
- Prior art date
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- 238000007689 inspection Methods 0.000 title claims abstract description 98
- 239000001301 oxygen Substances 0.000 title claims abstract description 66
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 66
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 239000007789 gas Substances 0.000 claims abstract description 31
- 230000001066 destructive effect Effects 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims description 28
- 239000011261 inert gas Substances 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 description 11
- 238000001802 infusion Methods 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 7
- 229910001873 dinitrogen Inorganic materials 0.000 description 7
- 230000002950 deficient Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000003978 infusion fluid Substances 0.000 description 3
- 230000001678 irradiating effect Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000007779 soft material Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 238000001285 laser absorption spectroscopy Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/03—Cuvette constructions
- G01N21/0303—Optical path conditioning in cuvettes, e.g. windows; adapted optical elements or systems; path modifying or adjustment
-
- 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
- G01N2021/0364—Cuvette constructions flexible, compressible
-
- 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
- G01N2021/396—Type of laser source
- G01N2021/399—Diode laser
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/061—Sources
- G01N2201/06113—Coherent sources; lasers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/02—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations
- G01N35/025—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations having a carousel or turntable for reaction cells or cuvettes
Definitions
- the present invention relates to a non-destructive inspection apparatus for oxygen concentration in a bag-like container provided in a liquid filling machine and filled with liquid.
- Medical infusion is filled in a bag-like container, for example, an infusion bag, and transported and stored.
- a bag-like container for example, an infusion bag
- This type of inspection method is a destructive inspection in which an injection needle is inserted into a product bag as a sample and air is taken out to measure the oxygen concentration. After the inspection, the sample is discarded. Therefore, the inspection is not a 100% inspection, but a specimen inspection, and there is an uncertain aspect regarding the security for health and safety.
- this method is a method in which laser light is transmitted through the upper gas phase portion in the vial and the amount of transmitted light is measured, that is, the degree of absorption is detected and the oxygen concentration is measured. is there.
- the container in the case of a vial, the container is hard, and the transmission distance of laser light is constant regardless of which vial is used. It can be carried out.
- a material made of a soft material such as an infusion bag is soft, and therefore the thickness changes for each bag to be transported, so that there is a problem that a nondestructive inspection using a laser beam cannot be performed with high accuracy. .
- an object of the present invention is to provide a nondestructive inspection apparatus capable of accurately inspecting the oxygen concentration in a bag-shaped container filled with a liquid using laser light by nondestructive inspection.
- a non-destructive inspection device for oxygen concentration in a bag-like container is held by a container holder provided in a carrier, and at least a liquid filling region, sealing
- a bag-like container which is provided in a liquid filling machine for filling liquid into a bag-like container conveyed along a conveyance path having a region and an inspection area, and is filled with liquid in the inspection region of the conveyance path
- a pair of left and right moving members that are arranged at the left and right positions of the inspection area of the transport path and are respectively movable toward and away from the bag-like container by the moving means, and one of these moving members is provided for measuring oxygen concentration
- a laser transmitting unit that transmits the laser beam
- a laser receiving unit that is provided on the other side and receives the laser beam
- the nondestructive inspection device for oxygen concentration in the bag-like container according to claim 2 is the nondestructive inspection device according to claim 1, Outside the inspection region, two calibration containers filled with inert gases having different oxygen concentrations and formed of a translucent material are arranged in advance.
- the pair of moving members having the laser transmitter and the laser receiver can be moved to a calibration position where the oxygen concentration in the calibration container can be measured.
- a nondestructive inspection device for oxygen concentration in a bag-like container according to claim 3 is the non-destructive inspection device according to claim 1, wherein the carrier is stopped when the bag-like container is inspected, and a laser transmitting unit and A pair of moving members having a laser receiving section are configured to be movable with respect to the plurality of stopped bag-like containers.
- the non-destructive inspection apparatus for oxygen concentration in a bag-like container according to claim 4 is the non-destructive inspection apparatus according to claim 1, wherein the container transport path is circular or oval.
- the laser transmitter and the laser receiver With the tip face holding the gas phase part of the container from both sides to a certain thickness, and removing the air between the tip face of the laser transmitter and laser receiver part and the surface of the gas phase part of the bag-like container Since the oxygen concentration is measured by irradiating the laser beam, even if the container is like a soft bag, the oxygen concentration is measured accurately and the quality of the product (that is, the oxygen concentration) Pass / fail can be judged. In addition, if it is going to measure the oxygen concentration in a soft container such as a bag with high accuracy, it is necessary to collect the gas in the bag and only sample inspection can be performed. Can do.
- FIG. 5 is a sectional view taken along line FF in FIG. 3.
- FIG. 6 is a view taken along arrow GG in FIG. 4. It is principal part sectional drawing of the same nondestructive inspection apparatus. It is a principal part top view of the same nondestructive inspection device. It is principal part sectional drawing at the time of the test
- This nondestructive inspection device is an example of an infusion bag (a bag-like container) made of a soft material (for example, soft plastic such as polyolefin is used) for medical infusion such as infusion (hereinafter referred to as liquid).
- infusion bag a bag-like container
- a soft material for example, soft plastic such as polyolefin is used
- liquid for medical infusion such as infusion
- which is included in a liquid filling machine that fills a container), and is used to inspect the oxygen concentration in the container filled with the liquid and sealed at the mouth.
- whether the oxygen concentration is good or bad is determined by measuring the oxygen concentration in the container using a laser beam and determining based on the measured value (this measurement method is, for example, wavelength tunable semiconductor laser absorption spectroscopy). Called the law).
- the liquid filling machine sequentially holds the container 1 as an infusion bag and transfers it to the empty container 1 with medical infusion while transporting it along the circular transport path 5.
- the mouth 2 is sealed, and after checking the oxygen concentration in the infusion bag filled with the liquid, a protective film is attached to the mouth 2 and sent to the next process It is.
- the transfer path 5 includes a receiving area 5A for receiving the container 1 (an area is also referred to as a station, hereinafter the same), a gas filling area 5B for filling an inert gas such as nitrogen gas into the container 1 from the mouth 2, and a mouth 2
- the liquid filling area 5C for filling the container 1 with the liquid, the sealing area 5D for capping the mouth part 2 of the container 1 filled with the liquid, and the gas phase part K in the container 1 with the cap are inspected.
- An inspection area 5E, a film attachment area 5F for attaching a protective film to the mouth portion 2, a defective product discharge area 5G for discharging defective products, and a delivery area 5H for delivering the container 1 to the next process are provided.
- a container supply / discharge device capable of supplying and discharging the container is provided at a position facing the receiving area 5A and the delivery area 5H of the container 1.
- three containers 1 are moved intermittently three by three, and the respective operations such as filling the three liquids are sequentially performed.
- the liquid filling machine holds the containers 1 at predetermined intervals and conveys them along a circular conveyance path 5.
- the liquid filling machine includes a rotary drive device 12 disposed on the gantry 11 and a vertical drive on the rotary drive device 12 side.
- a rotary drive plate 14 connected to the rotary drive shaft 13 in the direction and made rotatable in a horizontal plane, and an annular plate (an inner plate portion and an outer plate portion) connected to the outer periphery of the rotary drive plate 14. 15) and a container holder 16 for holding the container 1 in a plurality of intervals arranged on the annular plate 15 at predetermined intervals.
- the rotary drive device 12 is configured to intermittently rotate the rotary drive plate 14, that is, the annular plate 15.
- the rotation driving device 12, the rotation driving shaft body 13, the rotation driving plate body 14, the annular plate body 15 and the like constitute a conveyance body.
- Each of the container holders 16 includes a mounting plate 21 fixed to the annular plate 15, a cylindrical member 23 provided on the mounting plate 21, and a rotatable around the vertical axis in the cylindrical member 23.
- Via a connecting arm 26 to rotate (rotate) the one rotary shaft body 24A within a predetermined angle range, for example, an open / close air cylinder 27, and lower ends of the rotary shaft bodies 24.
- It comprises a pair of holding arms 28 (28A, 28B) which are attached to the part and can hold and open the mouth part 2 of the container 1 from both sides.
- the opening / closing air cylinder 27 when the opening / closing air cylinder 27 is operated to rotate one rotating shaft body 24A, the other rotating shaft body 24B rotates in the opposite direction with the same amount of rotation through the pair of gears 25. Therefore, the mouth 2 of the container 1 can be held and released from both sides by the pair of holding arms 28. Needless to say, for example, a semicircular recess that can engage with the mouth 2 is formed on the front end side of both holding arms 28.
- both shoulder portions 1 a of the container 1 held by the container holder 16 are arranged from the outside to the inside (to be precise, from the outside of the circular conveyance path).
- a container presser 31 is provided to prevent the container 1 from shaking by being pressed inside.
- the container presser 31 is provided on the annular plate 15 via a bearing 32 so as to be rotatable around a horizontal axis parallel to the width direction of the container 1 (that is, the tangential direction of the transport path).
- a swinging air cylinder 36 that swings at a predetermined angle.
- a total of eight rotary shaft bodies 33 are arranged according to the three container holders 16, in other words, according to each region, and a swinging air cylinder 36 is connected to each of both ends.
- FIG. 3 shows only a pair of swinging air cylinders 36 that swing the rotating shaft 33 located in the inspection region 5E.
- the swinging air cylinder 36 when the swinging air cylinder 36 is operated, the rotary shaft 33 is rotated within a predetermined angle range. That is, as shown in FIG. 4, the holding arm 34 is swung between a holding position (A) where the surface of the container 1 is pressed from the outside to the inside and an open position (B) released from the surface of the container 1. It is done.
- the inspection area 5E of the transport path 5 is provided with a nondestructive inspection apparatus 6 according to the present invention.
- the inspection region 5E has a length exceeding the three containers 1 held by the container holders 16 respectively.
- a calibration container (described later) is disposed outside the three containers 1 in order to calibrate the inspection apparatus.
- the inspection area 5E including the portion of the calibration container is referred to as an inspection / calibration area 5E ′.
- the nondestructive inspection apparatus 6 includes a support frame 41 having a rectangular shape in plan view arranged at a lower position and over a predetermined length in an inspection region 5E having a predetermined length.
- a pair of left and right guide members supported by a plurality of support members 42 erected on both left and right sides of the support frame 41, for example, guide rails 43, and these guide rails 43 are movable via guide wheels 44.
- a moving air cylinder (moving means) 46 (46A, 46B) attached to the top of each moving plate 45, and a tip of the rod portion 46a of the moving air cylinder 46
- a mounting plate (an example of a moving member) 47 (47A, 47B) attached to the laser beam and a laser transmitter 48A that is attached to the mounting plate 47 and transmits an inspection laser beam or an inspection laser beam.
- a gas chamber which is attached to the mounting plate 47 at a position in front of the laser transmitter 48A and the laser receiver 48B and which is formed of a translucent material and filled (filled) with nitrogen gas.
- a gas filling box 50 having an (inert gas chamber) and a moving device 51 for simultaneously moving the left and right moving plate bodies 45 in the inspection / calibration region 5E ′.
- one of the left mounting plates 47A in FIG. 4, for example, is attached with a laser transmitting portion 48A, and the other, for example, the right mounting plate 47B is attached with a laser receiving portion 48B. It has been. Of course, the left and right positions of the laser transmitter 48A and the laser receiver 48B may be reversed.
- the laser transmitter 48A and the laser receiver 48B are also referred to as an inspection tool 49.
- the moving device 51 includes a ball screw screw shaft body (which is a guide portion) 53 supported by brackets 52 at intermediate portions of the left and right support members 42, and a ball shaft on the screw shaft body 53. And a follower attached to the end of each of the left and right screw shaft bodies 53, and a nut body (which is a guided part) 54 connected to the lower bent portion 45a of the movable plate 45.
- the sprocket 55 includes a side sprocket 55 and an electric motor 58 that rotates a drive side sprocket 57 that engages with a conductive belt 56 wound around the driven side sprocket 55. In the middle of the conductive belt 56, a sprocket 59 for pressing the conductive belt and a sprocket 60 for tensioning the conductive belt are arranged.
- the electric motor 58 when the electric motor 58 is driven to rotate the screw shaft bodies 53, the left and right moving plate bodies 45, in other words, the laser transmitting section 48A and the laser receiving section 48B are simultaneously stopped at the three container 1 positions, The first inspection position (A), the second inspection position (B), the third inspection position (C), and the positions of the two calibration containers 61 (61A, 61B) provided outside these three containers 1, that is, the first It will be moved to 1 calibration position (D) and 2nd calibration position (E).
- the calibration container 61 is disposed at both ends of the support frame 41, that is, at the front and rear positions, and is formed in a box shape with a translucent material (for example, an acrylic plate is used). Each of them is filled with nitrogen gas as an inert gas having a predetermined oxygen concentration.
- the oxygen concentration of one calibration container 61A is 5%
- the oxygen concentration of the other calibration container 61B is 10%.
- the nondestructive inspection apparatus 6 includes a calculation unit 62.
- the calculation unit 62 includes a detection value from the laser receiving unit 48B, that is, a transmitted light amount of laser light.
- a received light amount-oxygen concentration calculating unit 63 for obtaining an oxygen concentration by inputting a certain received light amount and a conversion set in the received light amount-oxygen concentration calculating unit 63 by inputting detected values of the oxygen concentration in the two calibration containers 61
- a conversion coefficient calibration unit 64 for calibrating a coefficient (also referred to as a sensitivity coefficient) R is provided.
- the received light amount-oxygen concentration calculation unit 63 is provided with a graph representing the relationship between the received light amount and the oxygen concentration, that is, the conversion coefficient R, and the conversion coefficient calibration unit 64 includes As shown in FIG. 12, the current graph, that is, the conversion coefficient R ′ is obtained based on the amount of received light when the two calibration containers 61 are inspected. Of course, this graph is obtained by measuring the amount of received light at 5% density and the amount of received light at 10% density. Note that the value of the oxygen concentration in the two calibration containers 61 can be appropriately changed according to the measurement range of the measurement target. For example, 10% concentration and 20% concentration are used.
- the obtained graph that is, the new conversion coefficient R ′ is input to the received light amount-oxygen concentration calculation unit 63, and this new conversion coefficient R ′ is used thereafter.
- the current conversion coefficient R is used.
- the containers 1 are moved from the feeder to the receiving area 5A of the transport path 5 and are sequentially held three by three by the container holder 16 provided on the annular plate 15.
- the three containers 1 are stopped (of course, since both the shoulder portions 1a of the container 1 are held inward by the container presser 31 at this time, the thickness at the gas phase portion K is reduced.
- the three containers 1 are checked in order for quality.
- the inspection tool 49 stopped at the first calibration position (D) is moved to the first inspection position (A).
- the mounting plate 47 When moved to the first inspection position (A), as shown in FIGS. 8 and 9, the mounting plate 47 is projected to the container 1 side by the moving air cylinder 46. That is, the left and right gas filling boxes 50 are brought close to each other so that the central portion which is the gas phase portion K of the container 1 is sandwiched by a certain distance from both sides, and the gas filling box 50 and the gas phase portion K of the container 1 are The air layer existing between the two is excluded.
- a laser beam is transmitted from the laser transmitter 48A, passes through the container 1, and is received by the laser receiver 48B.
- the received light amount which is the transmitted light amount of the laser light detected by the laser receiving unit 48B, is input to the calculating unit 62, where the oxygen concentration is obtained based on the received light amount (also the dimming rate) of the laser light.
- the quality of the oxygen concentration that is, the quality is judged.
- a determination unit for determining whether the oxygen concentration is good or bad by comparing with a set value is provided.
- the laser transmitter 48A and the laser receiver 48B are moved to the second inspection position (B) by the moving device 51, and similarly, the second container 1 The inspection is performed, and thereafter, the third container 1 is inspected by being moved to the third inspection position (C) by the moving device 51.
- the oxygen concentration in the container 1 is defective, that is, when the oxygen concentration exceeds an allowable value, the quality is determined to be poor, and the protective film is not attached, but is directly transferred to the defective product discharge area 5G. Discharged outside.
- the annular plate body 15 is rotated by the rotation driving device 12, the next three containers 1 are conveyed to the inspection region E, and the inspection is performed.
- the inspection tool 49 is sequentially moved in the direction opposite to the previous inspection, and the three containers 1 are inspected.
- the inspection result at the time of calibration is input to the conversion coefficient calibration unit 64, and a graph showing the relationship between the amount of received laser light and the oxygen concentration, that is, the conversion coefficient R is calibrated.
- the tip of these laser transmitter and laser receiver presses the gas phase part of the container from both sides to make a certain thickness, and the tip surface and bag of the laser transmitter and laser receiver Since the oxygen concentration is measured by irradiating the laser beam after eliminating the air between the surface of the gas phase part of the cylindrical container, even if the container is like a soft bag, the accuracy By measuring the oxygen concentration well, it is possible to judge the quality of the oxygen concentration, that is, the quality of the product, and it is possible to inspect all products. For example, when trying to accurately measure the oxygen concentration in a soft container such as a bag, it is necessary to collect the gas in the container and only sample inspection can be performed. Can do.
- the inspection tool since the inspection tool is moved to the calibration position during non-inspection, the inspection tool, that is, the laser transmitter and the laser receiver can be calibrated, so that accurate measurement is always performed. be able to.
- the transport path 5 of the container may be oval, for example, as shown in FIG.
- the same operation and effect as in the case of the above embodiment are provided, and the calibration positions (D) and (E) are also out of the conveyance path 5 of the container, for example, half It is arranged outside the circle.
- the two calibration positions are arranged outside one semicircle portion.
Abstract
Description
搬送経路の検査領域の左右位置に配置されてそれぞれ移動手段により袋状容器に対して接近離間自在に設けられた左右一対の移動部材と、これら移動部材のうち一方に設けられて酸素濃度計測用のレーザ光を発信するレーザ発信部と、他方に設けられてレーザ光を受信するレーザ受信部とを具備し、
上記各移動部材におけるレーザ発信部およびレーザ受信部の先端面に、透光性材料にて同一の奥行き方向での長さを有する不活性ガス室を形成するとともに、
上記検査領域にて酸素濃度を計測する際に、左右一対の移動部材を互いに接近させてレーザ発信部およびレーザ受信部の先端面を袋状容器の気相部の表面に接触させることにより、当該気相部の厚さを一定に維持させるとともにレーザ発信部およびレーザ受信部の先端面と袋状容器の気相部の表面との間の空気を排除させるようにしたものである。
検査領域外に、予め、互いに異なる酸素濃度の不活性ガスが充填されるとともに透光性材料にて形成された2つの校正用容器を配置し、
且つレーザ発信部およびレーザ受信部を有する一対の移動部材を、上記校正用容器内の酸素濃度を計測し得る校正位置に移動し得るようにしたものである。
Claims (4)
- 搬送体に設けられた容器保持具により保持されて少なくとも液体の充填領域、封止領域および検査領域を有する搬送経路に沿って搬送される袋状容器内に液体を充填するための液充填機に設けられるとともに、上記搬送経路の検査領域にて、液体が充填された袋状容器の気相部にレーザ光を照射し、その透過光量に基づき袋状容器内の酸素濃度を計測するための非破壊検査装置であって、
搬送経路の検査領域の左右位置に配置されてそれぞれ移動手段により袋状容器に対して接近離間自在に設けられた左右一対の移動部材と、これら移動部材のうち一方に設けられて酸素濃度計測用のレーザ光を発信するレーザ発信部と、他方に設けられてレーザ光を受信するレーザ受信部とを具備し、
上記各移動部材におけるレーザ発信部およびレーザ受信部の先端面に、透光性材料にて同一の奥行き方向での長さを有する不活性ガス室を形成するとともに、
上記検査領域にて酸素濃度を計測する際に、左右一対の移動部材を互いに接近させてレーザ発信部およびレーザ受信部の先端面を袋状容器の気相部の表面に接触させることにより、当該気相部の厚さを一定に維持させるとともにレーザ発信部およびレーザ受信部の先端面と袋状容器の気相部の表面との間の空気を排除させるようにしたことを特徴とする袋状容器内における酸素濃度の非破壊検査装置。 - 検査領域外に、予め、互いに異なる酸素濃度の不活性ガスが充填されるとともに透光性材料にて形成された2つの校正用容器を配置し、
且つレーザ発信部およびレーザ受信部を有する一対の移動部材を、上記校正用容器内の酸素濃度を計測し得る校正位置に移動し得るようにしたことを特徴とする請求項1に記載の袋状容器内における酸素濃度の非破壊検査装置。 - 袋状容器の検査時に搬送体を停止させるとともに、レーザ発信部およびレーザ受信部を有する一対の移動部材を、当該停止された複数の袋状容器に対して移動させ得るように構成したことを特徴とする請求項1に記載の袋状容器内における酸素濃度の非破壊検査装置。
- 搬送経路が、円形または長円形であることを特徴とする請求項1に記載の袋状容器内における酸素濃度の非破壊検査装置。
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