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WO2018142614A1 - ガラスびんの検査装置 - Google Patents

ガラスびんの検査装置 Download PDF

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Publication number
WO2018142614A1
WO2018142614A1 PCT/JP2017/004228 JP2017004228W WO2018142614A1 WO 2018142614 A1 WO2018142614 A1 WO 2018142614A1 JP 2017004228 W JP2017004228 W JP 2017004228W WO 2018142614 A1 WO2018142614 A1 WO 2018142614A1
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WO
WIPO (PCT)
Prior art keywords
light
glass bottle
light receiving
unit
light emitting
Prior art date
Application number
PCT/JP2017/004228
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
原田　崇
Original Assignee
東洋ガラス株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 東洋ガラス株式会社 filed Critical 東洋ガラス株式会社
Priority to KR1020197022224A priority Critical patent/KR102287992B1/ko
Priority to JP2018565224A priority patent/JP6827060B2/ja
Priority to PCT/JP2017/004228 priority patent/WO2018142614A1/ja
Priority to CN202210462656.XA priority patent/CN114813787A/zh
Priority to CN201780085631.XA priority patent/CN110431405B/zh
Publication of WO2018142614A1 publication Critical patent/WO2018142614A1/ja
Priority to PH12019501547A priority patent/PH12019501547A1/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
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/958—Inspecting transparent materials or objects, e.g. windscreens
    • 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
    • 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
    • G01N21/8806—Specially adapted optical and illumination features
    • 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
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/8901—Optical details; Scanning details
    • 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
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/892—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined
    • G01N21/896—Optical defects in or on transparent materials, e.g. distortion, surface flaws in conveyed flat sheet or rod
    • 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 glass bottle inspection device that detects a defect of a glass bottle using a light emitting part and a light receiving part.
  • a defect called chatter may occur in the glass bottle manufacturing process at the mouth and neck of the glass bottle.
  • the chatter is a crack like a crack, and includes a vertical chatter extending in a substantially vertical direction (a bottle axial direction) and a horizontal chatter extending in a substantially horizontal direction (a direction orthogonal to the bottle axial direction).
  • the inspection device includes illumination that projects light onto a glass bottle, a camera that captures an image, and an image processing device that processes the image to detect chatter.
  • Patent Document 2 As a glass bottle inspection apparatus including a plurality of projectors and a plurality of light receivers, it has been proposed to instantaneously project a plurality of projectors one by one in sequence (for example, Patent Document 2). By doing this, even if a plurality of projectors are used, the situation where the irradiation light interferes with each other and the detection rate decreases, or even small bubbles shine excessively and the inspection accuracy is reduced is eliminated. .
  • JP 2014-134537 A Japanese Patent Laid-Open No. 11-344451
  • An object of the present invention is to provide a glass bottle inspection device that can prevent interference of light received by a light receiving unit even when a plurality of light emitting units are used. It is another object of the present invention to provide a glass bottle inspection apparatus capable of easily and accurately positioning a light emitting unit and a light receiving unit at predetermined positions of a glass bottle.
  • One aspect of the glass bottle inspection apparatus is: A first light emitting unit that emits visible light toward the mouth of the glass bottle; A second light emitting unit that irradiates infrared light toward the mouth; A first light receiving portion for detecting reflected light or refracted light from the mouth portion; A second light receiving portion for detecting reflected or refracted light of infrared light from the mouth portion; Including The first light emitting unit, the second light emitting unit, the first light receiving unit, and the second light receiving unit are arranged around the glass bottle at a rotation position for rotating the glass bottle provided in the glass bottle conveyance path. It is characterized by that.
  • the glass bottle inspection apparatus even when a plurality of light emitting units are used, it is possible to detect chatter or the like generated at the mouth of the glass bottle while preventing interference of light received by the light receiving unit. it can.
  • the first light emitting unit can be set to irradiate visible light having a wavelength with high transmittance according to the color of the glass bottle to be inspected.
  • the visible light of the first light emitting unit is set to a wavelength having a high transmittance according to the color of the glass bottle, so that the detection accuracy is affected by the color of the glass bottle. Can be prevented.
  • the first light receiving unit includes a band pass filter that transmits visible light of the first light emitting unit and does not transmit infrared light of the second light emitting unit
  • the second light receiving unit may include a band pass filter that transmits the infrared light of the second light emitting unit and does not transmit the visible light of the first light emitting unit.
  • light to be received can be selected and received by a band pass filter.
  • the first light emitting unit is disposed at a position symmetrical to the second light emitting unit with respect to a virtual plane including the central axis of rotation of the glass bottle
  • the first light receiving unit may be disposed at a position symmetrical to the second light receiving unit with respect to the virtual plane.
  • the light-emitting part and the light-receiving part are arranged symmetrically with respect to the plane so that they are reflected or refracted from, for example, differently shaped chatters generated at the same height position in the mouth part. Since light can be detected while preventing disturbance light from other light, detection accuracy of chatter and the like can be improved.
  • the first light receiving unit is one of two or more light receiving units that receive visible light of the first light emitting unit
  • the second light receiving unit may be one of two or more light receiving units that receive infrared light from the second light emitting unit.
  • the glass bottle inspection apparatus it is possible to improve the detection accuracy of a chatter or the like by including a plurality of light receiving units that receive visible light and a plurality of light receiving units that receive infrared light. it can.
  • the rotation position is provided in the middle of the glass bottle conveyance path, The glass bottles conveyed to the rotation position can be sequentially inspected.
  • the glass bottle inspection apparatus According to the glass bottle inspection apparatus according to this application example, it is possible to inspect sequentially and efficiently while the glass bottle is being conveyed.
  • the transport path is formed on a circumference centered on the transport center axis,
  • the first light receiving unit and the second light receiving unit are disposed closer to the transport center axis than the center axis of rotation, and receive reflected light or refracted light from the mouth part upward by a mirror. Can do.
  • a mirror is used on the conveyance center axis side that easily interferes with other components, so that the installation space of the light receiving unit can be saved.
  • the glass bottle inspection apparatus can efficiently perform different inspection items during the transportation of the glass bottle.
  • One aspect of the glass bottle inspection apparatus is: In the inspection device for inspecting the glass bottle by arranging the light emitting part and the light receiving part at the rotation position for rotating the glass bottle provided in the conveyance path of the glass bottle, An attachment part to which the light emitting part and the light receiving part are fixed; A first movement mechanism for moving the attachment portion forward and backward with respect to the rotation position; A second moving mechanism for raising and lowering the attachment portion; A positioning portion attached at a predetermined position of the attachment portion; Including By moving the attachment portion until the positioning portion contacts the side surface and the top surface of the mouth portion of the glass bottle by the first moving mechanism and the second moving mechanism with respect to the glass bottle disposed at the rotation position.
  • the light emitting unit and the light receiving unit can be positioned at predetermined positions.
  • the light emitting unit and the light receiving unit can be easily and accurately positioned at predetermined positions of the glass bottle by the positioning unit even when inspecting glass bottles having different shapes. Can do.
  • the positioning part may include a first positioning surface that contacts the side surface of the mouth portion of the glass bottle and a second positioning surface that contacts the top surface of the mouth portion at the tip of the rod-shaped member.
  • the glass bottle inspection apparatus according to this application example can reliably perform positioning with a simple configuration.
  • the positioning unit may be movable to a position that does not interfere with the glass bottle that is transported through the transport path after the light emitting unit and the light receiving unit are positioned.
  • the glass bottle inspection apparatus of the present invention even when a plurality of light emitting units are used, it is possible to detect chatter or the like generated at the mouth of the glass bottle while preventing interference of light received by the light receiving unit. . Further, according to the glass bottle inspection apparatus of the present invention, the light emitting unit and the light receiving unit can be easily and accurately positioned at predetermined positions of the glass bottle even when glass bottles having different shapes are to be inspected. .
  • FIG. 1 is a plan view of a glass bottle inspection apparatus.
  • FIG. 2 is a plan view of the second unit.
  • FIG. 3 is a side view of the second unit.
  • FIG. 4 is an enlarged perspective view of the mouth portion showing the imaging area of each light receiving portion.
  • FIG. 5 is a plan view of the first unit.
  • FIG. 6 is a side view of a second unit of a modification.
  • FIG. 7 is a side view of the second unit for explaining the positioning method.
  • FIG. 8 is a side view of the second unit for explaining the positioning method.
  • One aspect of the glass bottle inspection apparatus includes a first light emitting unit that irradiates visible light toward the mouth of the glass bottle, and a second light emitting unit that emits infrared light toward the mouth. And a first light receiving unit that detects reflected or refracted light of visible light from the mouth, and a second light receiving unit that detects reflected or refracted light of infrared light from the mouth,
  • the first light emitting unit, the second light emitting unit, the first light receiving unit, and the second light receiving unit are arranged around the glass bottle at a rotation position for rotating the glass bottle provided in the glass bottle conveyance path. It is characterized by that.
  • one aspect of the glass bottle inspection apparatus is an inspection in which the glass bottle is inspected by arranging a light emitting unit and a light receiving unit at a rotation position where the glass bottle provided on the glass bottle conveyance path rotates.
  • the light emitting part and the light receiving part can be positioned at predetermined positions by moving the attachment part until it contacts the top surface.
  • FIGS. 1 is a plan view of the inspection apparatus 10 for the glass bottle 1
  • FIG. 2 is a plan view of the second unit 11b
  • FIG. 3 is a side view of the second unit 11b
  • FIG. FIG. 5 is an enlarged perspective view of the mouth portion 2 showing imaging regions 43 and 50 to 53
  • FIG. 5 is a plan view of the first unit 11a.
  • the inspection device 10 includes a carry-in port 18, a conveyance path 12, a first unit 11 a, a second unit 11 b, and a carry-out port 19.
  • the glass bottle 1 is intermittently carried into the conveyance path 12 from the carry-in port 18 of the inspection apparatus 10.
  • the transport path 12 is provided with eight support tables (not shown), and supports the glass bottles 1 one by one.
  • the glass bottle 1 is intermittently transported along the transport path 12 to each stage while being supported by the support base.
  • the conveyance path 12 is formed on a circumference around the conveyance center axis 15.
  • the glass bottle 1 is conveyed in the clockwise direction in FIG.
  • the rotation position 14 is provided in the middle of the conveyance path 12 of the glass bottle 1, and the glass bottle 1 conveyed to the rotation position 14 can be inspected sequentially.
  • another rotation position 14 provided with the first unit 11a is provided at a position different from the rotation position 14 of the second unit 11b (upstream side in the conveyance direction of the glass bottle 1). At this different rotation position 14, an inspection different from the inspection item at the rotation position 14 of the second unit 11b can be performed.
  • the conveyance path 12 is not limited to the circumference, but may be formed in another shape, for example, a straight line.
  • the glass bottle 1 that has undergone the inspection process of each stage is sent out of the inspection apparatus 10 from the carry-out port 19 and moves to the next line in the case of a non-defective product.
  • the first unit 11a is an inspection unit that detects horizontal vibration
  • the second unit 11b is an inspection unit that detects vertical vibration.
  • Different inspection items for example, different types of defects
  • the chatter is a defect such as a crack generated in the mouth portion 2 when the glass bottle 1 is manufactured.
  • the glass bottle 1 in which the vibration is detected is discarded as a defective product.
  • chatters generated at the mouth portion 2 of the glass bottle 1. There are many kinds of chatters generated at the mouth portion 2 of the glass bottle 1. Among them, the first unit 11 a detects a horizontal chatch extending substantially in the horizontal direction of the glass bottle 1, and the second unit 11 b is an abbreviation of the glass bottle 1. Detects vertical vibration extending in the vertical direction.
  • the mouth 2 has a structure such as a screw for fitting a lid or the like, so there are many undulations in a narrow range, and it is difficult to detect chatter on the other hand.
  • An optical inspection unit is required to detect various types of chatter with high accuracy. Therefore, a plurality of light receiving units are provided according to the occurrence location and shape of chatter.
  • the inspection apparatus 10 includes a control unit 62 electrically connected to the first unit 11a and the second unit 11b.
  • the control unit 62 includes a determination unit 63, a template creation unit 64, a template storage unit 65, and an image processing unit 66.
  • the image processing unit 66 converts data captured by the first unit 11a and the second unit 11b into image data having a predetermined brightness.
  • the template creation unit 64 creates a template based on data of only the non-defective glass bottle 1 imaged by the first unit 11a and the second unit 11b. The created template is stored in the template storage unit 65.
  • the determination unit 63 compares the brightness of the image data converted by the image processing unit 66 and the template stored in the template storage unit 65, and determines that there is a chatter when a preset threshold value is exceeded. To do.
  • the control unit 62 is also electrically connected to a rotation detection unit 68 provided for each rotation position 14, and information on the rotation angle due to the rotation of the glass bottle 1 is input.
  • the second unit 11b will be mainly described. However, the same configuration may be applied to the first unit 11a, or may be applied to another inspection unit (not shown).
  • the 2nd unit 11b is the 1st light emission part 20 which irradiates visible light toward the opening part 2 of the glass bottle 1, and infrared light toward the opening part 2.
  • the second light emitting unit 30 (not shown in FIG. 3) that irradiates the light
  • the first light receiving unit 40 that detects the reflected or refracted light of the visible light from the mouth 2
  • the 2nd light-receiving part 50 (it omits in FIG. 3) which detects refracted light.
  • the first light emitting unit 20, the second light emitting unit 30, the first light receiving unit 40, and the second light receiving unit 50 rotate to rotate the glass bottle 1 provided in the conveyance path 12 of the glass bottle 1.
  • position 14 it is placed around the glass bottle 1.
  • the 1st light emission part 20, the 2nd light emission part 30, the 1st light-receiving part 40, and the 2nd light-receiving part 50 are arrange
  • the mouth portion 2 of the glass bottle 1 By using infrared light and visible light, the mouth portion 2 of the glass bottle 1 while preventing interference of light received by the light receiving portions (40, 50) even if a plurality of light emitting portions (20, 30) are used. It is possible to detect chatter and the like generated in
  • the first light receiving unit 40 is one of two or more light receiving units 40 to 43 that receive the visible light of the first light emitting unit 20.
  • the second light receiving unit 50 is one of two or more light receiving units 50 to 53 that receive the infrared light of the second light emitting unit 30.
  • the plurality of light receiving units 40 to 43 that receive visible light
  • the plurality of light receiving units 50 to 53 that receive infrared light
  • the first light receiving unit 40 will be described as a representative example of the light receiving units 40 to 43 that receive visible light
  • the second light receiving unit 50 will be described as a representative example of the light receiving units 50 to 53 that receive infrared light. To do.
  • the 1st light emission part 20 and the 2nd light emission part 30 are diffused illumination using LED (light emitting diode). A large solid angle can be obtained by using diffuse illumination, and reflected light or refracted light from various kinds of chatters can be easily obtained.
  • the first light emitting unit 20 emits visible light. It is preferable to set the 1st light emission part 20 so that the visible light of the wavelength with the high transmittance
  • the wavelength with high transmittance will be further described.
  • green LED illumination and red LED illumination are prepared as LEDs of the first light emitting unit 20
  • the color of the glass bottle 1 is, for example, green or blue
  • the green wavelength region is more than the red wavelength region. Since the light transmittance of the glass bottle 1 is high, green LED illumination is adopted.
  • red LED illumination is employed because the light transmittance of the glass bottle 1 is higher in the red wavelength region than in the green wavelength region. .
  • the first light receiving unit 40 can sufficiently recognize the light, so that the color of the glass bottle 1 It is possible to detect chatter and the like with high accuracy without being affected by the above.
  • a green LED can be used.
  • the red wavelength is transmitted to the same extent as the green wavelength, a red LED may be used.
  • the visible light of the first light emitting unit 20 light having a wavelength that is higher in transmittance than the glass bottle 1 is selected.
  • the first light emitting unit 20 may be provided with a plurality of color LEDs so that a plurality of colors can be selected and emitted, and when the first light emitting unit 20 is changed to the inspection of the glass bottle 1 having a different color, the first light emitting unit 20 is replaced with a different color LED. Also good.
  • the second light emitting unit 30 emits infrared light. Infrared light is preferable because it is less affected by the color of the glass bottle.
  • first light receiving unit 40 and the second light receiving unit 50 for example, a high-speed area sensor camera can be used.
  • the first light receiving unit 40 and the second light receiving unit 50 may use other known means capable of detecting the luminance of visible light and infrared light.
  • the first light receiving unit 40 includes a band-pass filter 40 a that transmits the visible light of the first light emitting unit 20 and does not transmit the infrared light of the second light emitting unit 30.
  • a band pass filter 40a for example, when the visible light of the first light emitting unit 20 is green, a green band pass filter that selectively transmits the green wavelength band can be employed.
  • the band-pass filter 40a does not transmit (for example, absorbs) infrared light other than green light, so that erroneous detection due to disturbance can be prevented.
  • the second light receiving unit 50 may include a band pass filter 50a that transmits the infrared light of the second light emitting unit 30 and does not transmit the visible light of the first light emitting unit 20.
  • the band pass filter 50 a selectively transmits the infrared light wavelength region of the second light emitting unit 30. By not transmitting (for example, absorbing) visible light other than infrared light by the bandpass filter 50a, erroneous detection due to disturbance can be prevented.
  • the light to be received by the bandpass filters 40a and 50a can be selected and only the light in a predetermined wavelength range can be received by the first light receiving unit 40 and the second light receiving unit 50.
  • the bandpass filters 40a and 50a are optical filters that transmit only a specific wavelength band.
  • a dielectric multilayer filter or a filter glass can be used as the band-pass filters 40a and 50a.
  • FIG. 2 there is a virtual plane 7 (indicated by a one-dot chain line) that passes between the first light receiving unit 40 and the second light receiving unit 50 and includes the central axis 5 of rotation of the glass bottle 1.
  • the virtual surface 7 may be a virtually set surface that passes through the conveyance center axis 15 and the rotation center axis 5.
  • the first light emitting unit 20 is disposed in a plane symmetric with the second light emitting unit 30 with respect to the virtual plane 7, and the first light receiving unit 40 is plane symmetric with the second light receiving unit 50 with respect to the virtual plane 7. It is arranged at the position.
  • the light receiving units 41 to 43 that receive visible light are arranged at positions symmetrical to the light receiving units 51 to 53 that receive infrared light with respect to the virtual plane 7.
  • the first and second light emitting units 20 and 30 and the light receiving units 40 to 43 and 50 to 53 are arranged in plane symmetry so that the shape generated at the same height position with respect to the central axis 5 of the glass bottle 1 in the mouth 2. Since the light reflected or refracted from different chatters or the like can be detected while preventing disturbance light of other light, the detection accuracy of the chatter or the like can be improved.
  • FIG. 3 shows the upper and lower arrangements of the first light emitting unit 20 and the light receiving units 40 to 43 arranged on the upstream side in the transport direction of the virtual plane 7.
  • the second light emitting unit 30 and the light receiving units 50 to 53 are similarly arranged on the downstream side in the transport direction of the virtual plane 7.
  • FIG. 4 shows the imaging areas of the light receiving portions 40 to 43 and 50 to 53 in the mouth portion 2 of the glass bottle 1 by broken lines.
  • the imaging area is the inspection target area.
  • the mouth portion 2 includes a top surface 2b, a side surface 2a of the mouth portion 2 where a screw portion (screw is omitted), and a lower neck portion 3 are formed.
  • the neck portion 3 includes a skirt portion 3a protruding in an annular shape and a portion directly below the skirt portion 3a.
  • the upper region of the mouth part 2 including the top surface 2 b is an imaging region, and the light receiving parts 41 and 51 are inside the side surface 2 a of the mouth part 2.
  • An area including the side surface is an imaging area, and the light receiving parts 42, 52, 43, and 53 are an upper area and a lower area (including immediately below the skirt part 3a) of the skirt part 3a.
  • the imaging areas of the light receiving units 40 to 43 and 50 to 53 have overlapping portions. Since the vertical heights and horizontal positions of the light receiving units 40 to 43 and 50 to 53 are different, the probability of receiving light reflected or refracted from chatter in the overlapping range is increased.
  • the imaging regions of the light receiving units 40 to 43 and 50 to 53 include places where chatter is likely to occur even if the shape of the glass bottle 1 is changed.
  • the first unit 11a for detecting horizontal vibration includes a light emitting unit 200 and a light receiving unit 400 in the same manner as the second unit 11b.
  • the light emitting unit 200 is provided on the side of the transport center axis 15 with respect to the glass bottle 1 at the rotation position 14, and includes a visible light LED with high transmittance that is appropriately selected according to the color of the glass bottle 1. This is because visible light makes it easy for an inspector to visually recognize the light emission state.
  • a plurality of (for example, seven) light receiving units 400 are arranged outside the transport path 12 with the glass bottle 1 interposed therebetween with respect to the light emitting unit 200, and transmit light that refracts at different angles depending on the shape of the chatter and the like through the glass bottle 1. Receive light.
  • Each of the light receiving units 400 includes a bandpass filter, and can selectively and efficiently receive reflected or transmitted light of visible light emitted from the light emitting unit 200.
  • the light receiving unit 400 can prevent disturbance due to light from other inspection machines, for example, by a bandpass filter.
  • FIG. 6 is a side view of a modified second unit 11c.
  • the first and second light emitting units 20, 30 and the light receiving units 41 to 43, 51 to 53 other than the first light receiving unit 40 and the second light receiving unit 50 are the same as the inspection apparatus 10 in FIGS. Arranged similarly.
  • FIG. 6 shows the same state as FIG. 3, but in FIG. 6, the light receiving parts 41 to 43 other than the first light receiving part 40 are omitted.
  • the second light receiving unit 50 is positioned symmetrically with the first light receiving unit 40 with respect to the virtual plane 7 (FIG. 2). Note that the same components as those in FIGS. 1 to 3 are denoted by the same reference numerals, and redundant description is omitted.
  • the transport path 12 is formed on a circumference 16 (FIG. 1) centered on the transport center axis 15, and the first light receiving unit 40 (and the second light receiving unit 50) is more transported than the center axis 5 of the rotation. It is arranged on the 15 side, and the reflected light or refracted light from the mouth portion 2 is reflected upward by the mirror 60 and received.
  • the first light receiving unit 40 (and the second light receiving unit 50) uses a mirror 60 on the side of the transport center axis 15 that easily interferes with other components. Thereby, the installation space of the 1st light-receiving part 40 (and 2nd light-receiving part 50) can be omitted.
  • the visible light of the first light emitting unit 20 is refracted by the top surface 2 b of the mouth 2, reaches the mirror 60 from the inner surface of the mouth 2, and the first light receiving unit 40 reflects the light reflected by the mirror 60. It is receiving light.
  • the first light receiving unit 40 is disposed so as to extend in the vertical direction, for example, so that an installation space in the vicinity of the transport center axis 15 can be omitted.
  • Positioning unit The positioning unit 76 of the inspection apparatus 10 will be described with reference to FIGS. 7 and 8.
  • 7 and 8 are side views of the second unit 11b for explaining the positioning method. 7 and 8, the second light emitting unit 30 and the light receiving units 41 to 43, 50 to 53 other than the first light receiving unit 40 are omitted, but the first light emitting unit 20, the second light emitting unit 30, and Similarly to the first light receiving unit 40, the light receiving units 41 to 43 and 50 to 53 are fixed to the mounting unit 70 at predetermined positions.
  • the first unit 11a has a configuration related to positioning similar to that of the second unit 11b. Note that the same components as those in FIGS. 1 to 3 are denoted by the same reference numerals, and redundant description is omitted.
  • the second unit 11 b receives the light from the first and second light emitting units 20 and 30 at the rotation position 14 provided in the transport path 12.
  • the glass bottle 1 is inspected by receiving light at 50-53.
  • the second unit 11 b includes an attachment portion 70 to which the first light receiving portion 40 and the like are fixed, a first moving mechanism 72 that moves the attachment portion 70 forward and backward with respect to the rotation position 14, and the attachment portion 70.
  • a second moving mechanism 74 that moves up and down, and a positioning portion 76 attached to a predetermined position of the attachment portion 70.
  • the first moving mechanism 72 and the second moving mechanism 74 allow the positioning portion 76 to contact the side surface 2 a and the top surface 2 b of the mouth portion 2 of the glass bottle 1.
  • the first light receiving unit 40 can be positioned at a predetermined position by moving the. In the manufacturing factory of the glass bottle 1, another shape of the glass bottle 1 may be produced by exchanging the mold. Even when the glass bottle 1 having a different shape is to be inspected, the first light receiving unit 40 (the first and second light emitting units 20 and 30 and the other light receiving units 41 to 43 are placed at predetermined positions on the glass bottle 1 by the positioning unit 76. , 50 to 53) can be positioned easily and accurately.
  • the shape of the mouth portion 2 such as a screw mouth and a crown mouth, the diameter, and the height of the glass bottle 1 may be different.
  • the mounting positions and mounting angles of the first and second light emitting units 20 and 30 and the light receiving units 40 to 43 and 50 to 53 can be basically used as they are for any glass bottle 1. This is because the mounting position and the mounting angle that are most suitable for the occurrence location of the chatter and the like are set by the inventors' previous experience and experiments. For example, when the glass bottles 1 having different shapes and having chatter were inspected using the inspection apparatus 10, it was possible to determine that 90% or more of the samples had chatter.
  • the first moving mechanism 72 is disposed on the elevating plate 71 and has two rods 73 (only one on the near side is shown) with a mounting portion 70 fixed to one end, and the other of the rods 73. And a manual ball screw mechanism fixed to the tip of the head.
  • the elevating plate 71 is disposed on the opposite side of the transport path 12 from the transport center axis 15. By rotating the handle of the manual ball screw mechanism, the rod 73 guided by the elevating plate 71 moves forward or backward with respect to the transport center shaft 15 together with the mounting portion 70.
  • the positioning unit 76 moves so as to pass through the central axis 5 of the glass bottle 1 at the rotation position 14. For example, the positioning unit 76 moves along the virtual plane 7 shown in FIG.
  • the second moving mechanism 74 includes a manual ball screw mechanism disposed on the lifting plate 71 and a rod 75 having one tip fixed to the fixing base 13 and the other tip side guided by the lifting plate 71.
  • the lift plate 71 moves up and down with respect to the fixed base 13 by turning the handle of the manual ball screw mechanism. Accordingly, the second moving mechanism 74 moves the first moving mechanism 72 and the mounting portion 70 up and down.
  • the positioning unit 76 When the positioning unit 76 is moved by the second moving mechanism 74, the positioning unit 76 moves up and down in a direction parallel to the central axis 5 of the glass bottle 1 at the rotation position 14.
  • the positioning portion 76 includes a first positioning surface 76a that contacts the side surface 2a of the mouth portion 2 of the glass bottle 1 and a second positioning surface 76b that contacts the top surface 2b of the mouth portion 2 at the tip of the rod-shaped member. . Positioning can be reliably executed with a simple configuration of the positioning portion 76.
  • the first positioning surface 76a is a surface extending in the vertical direction
  • the second positioning surface 76b is a surface extending in the horizontal direction.
  • the positioning unit 76 is a glass bottle 1 that is transported through the transport path 12 after positioning the first light receiving unit 40 (the same applies to the first and second light emitting units 20 and 30 and the other light receiving units 41 to 43 and 50 to 53). It is possible to move to a position where it does not interfere with. Interference with the glass bottle 1 inspected continuously with the positioning portion 76 can be prevented. For example, as shown by an arrow in FIG. 8, the positioning portion 76 may prevent interference with the glass bottle 1 being conveyed by being extracted from above the attachment portion 70.
  • the first moving mechanism 72 and the second moving mechanism 74 used manual ball screw mechanisms, but may use electric ball screw mechanisms or other actuators.
  • the glass bottle 1 conveyed to the rotation position 14 of the first unit 11a and the second unit 11b is rotated around the central axis 5 by a rotation electric motor (not shown) while being vertical and horizontal.
  • a slip inspection is performed.
  • the second unit 11b will be described with reference to FIGS. 1 to 4, but the basic inspection method is the same for the first unit 11a.
  • the second unit 11b includes a plurality of light receiving units 40 to 43 and 50 to 53. The first light receiving unit 40 and the second light receiving unit 50 will be described in order to simplify the description.
  • the first light emitting unit 20 and the second light emitting unit 30 irradiate the mouth 2 of the glass bottle 1 with visible light and infrared light at the rotation position 14 of the second unit 11b.
  • the control unit 62 causes the first light receiving unit 40 and the second light receiving unit 50 to continuously image the mouth portion 2 in synchronization with the rotation angle of rotation by the output signal of the rotation detection unit 68.
  • the images captured by the first light receiving unit 40 and the second light receiving unit 50 are processed by the image processing unit 66. More specifically, in the first light receiving unit 40 and the second light receiving unit 50, light from the first light emitting unit 20 and the second light emitting unit 30 is incident on the mouth part 2 of the glass bottle 1 and is emitted from the mouth part 2. The refracted light is picked up by the first light receiving unit 40 and the second light receiving unit 50, and the picked-up image is converted into brightness of a predetermined gradation (for example, 256 gradations) by the image processing unit 66.
  • a predetermined gradation for example, 256 gradations
  • the image processor 66 When there is a chatter on the mouth 2, the light incident on the mouth 2 is refracted at the crack surface of the chatter, and this refracted light is brightened as an area (high gradation area) by the image processor 66 than other image parts. Be recognized.
  • the imaging regions of the first light receiving unit 40 and the second light receiving unit 50 are regions indicated by broken lines in FIG. 4, but in the imaging region, the portion where the vibration is particularly likely to occur is more than the other portion called the gate.
  • a small number of pixels having a predetermined brightness can be set as the threshold value. This is because the detection accuracy of the predetermined portion is improved by the gate.
  • a plurality of gates may be provided in one imaging region. Examples of the portion where the gate is provided in the mouth portion 2 include a range from 0 mm to 5 mm below the top surface 2b of the side surface 2a, and a range from 0 mm to 5 mm below the skirt portion 3a.
  • the determination unit 63 compares (subtracts) the image converted to a predetermined gradation for each unit pixel and the template, and extracts a detection object whose image is brighter than the template.
  • the determination unit 63 exceeds the threshold value of the predetermined brightness (binarized value) after subtraction set in the inspection region of the first light receiving unit 40 and the extracted detection body 63 has a predetermined area (number of pixels). ) Is exceeded, it is determined that there is a chatter in the mouth 2. Conversely, the determination unit 63 determines that there is no chatter in the mouth 2 when at least one of the threshold values is not exceeded.
  • the glass bottle 1 determined to have chatter is taken out of the line without being transferred from the carry-out port 19 to the next process, and is processed as a defective product.
  • Template A template used in the inspection method will be described.
  • the template creation unit 64 images only a predetermined number (for example, about 20) of non-defective glass bottles 1 in the same manner as in the above-described inspection, and creates a new template for the glass bottle 1 to be inspected. It is created for each of the first light receiving unit 40 and the second light receiving unit 50. In the new template, since only the non-defective glass bottle 1 is targeted, the luminance for each unit pixel is reflected as it is. New templates created in each of the first light receiving unit 40 and the second light receiving unit 50 are stored in the template storage unit 65.
  • the actual inspection is performed for each glass bottle 1 while comparing the template stored in the template storage unit 65 with the newly captured image.
  • the template is updated as the inspection proceeds.
  • the template can be updated each time a predetermined number of inspections are performed. That is, when the number of non-defective glass bottles 1 reaches a predetermined number, updating is performed by reflecting the luminance distribution for the predetermined number in the template.
  • the predetermined number to be reflected in the template can be set to be small (for example, 60) at the beginning of the inspection and to increase (for example, 250) as the inspection proceeds. Further, even when the predetermined number of reflections is less than the predetermined number reflected in the template, the template is updated with the luminance distribution corresponding to the number of non-defective products obtained during the predetermined update time (for example, 20 minutes). This is because when the production is temporarily stopped due to a production trouble, the state of the glass bottle 1 may also change, so that the influence of the changed state of the glass bottle 1 is not greatly reflected in the template.
  • the template increases the number of non-defective glass bottles 1 to be reflected in the template every time it is updated from the start of production (inspection), and weakens the degree of reflection of brightness in the non-defective product distribution to be reflected in the template. Since the state of the mold changes while production is continued, the shape of the glass bottle 1 also slightly changes. For this reason, if the template is changed to a template having only the changed state, or if the changed state is strongly reflected in the template, the non-defective product rejection rate tends to increase.
  • an update method as shown in Table 1 can be adopted.
  • a new template is created based on the luminance distribution obtained by inspecting 20 non-defective glass bottles 1 with the inspection apparatus 10 and performing image processing with the image processing unit 66.
  • the first updated template reflects the luminance distribution of 60 non-defective glass bottles 1 from the start of inspection in the new template. Specifically, only the light distribution of the difference between the luminance distribution for 60 lines and the new template is reflected by adding to the new template.
  • the luminance addition rate (addition rate of the brighter part than the new template) in each unit pixel number is set to 100%, and 128 gradations (of 256 gradations) are set as addition limit values, and the luminance subtraction rate The subtraction limit value was set to 128 gradations (of 256 gradations) with 70% being the subtraction rate of the darker part than the new template.
  • the inspection by the updated inspection apparatus 10 is performed with the updated template. As the number of updates increases, such as the second update and the third update, the addition rate and the subtraction rate become smaller, and the luminance distribution that appears in the number up to the update is gradually reflected in the update template. This is because the influence of the change in the mold state (mold temperature, release agent, etc.) due to continuous production is not strongly reflected in the template.
  • the present invention includes configurations that are substantially the same as the configurations described in the embodiments (for example, configurations that have the same functions, methods, and results, or configurations that have the same objects and effects).
  • the invention includes a configuration in which a non-essential part of the configuration described in the embodiment is replaced.
  • the present invention includes a configuration that exhibits the same operational effects as the configuration described in the embodiment or a configuration that can achieve the same object.
  • the invention includes a configuration in which a known technique is added to the configuration described in the embodiment.
  • second light receiving part 50a ... band pass filter, 51 to 53 ... light receiving part, 60 Mirror, 62 Control unit, 63 Determination unit, 64 Template creation unit, 65 Template storage unit, 66 Image processing unit, 68 Rotation detection unit, 70 Mounting unit, 71 Lift plate, 72 1 moving mechanism, 73 ... rod, 74 ... second moving mechanism, 5 ... rod, 76 ... positioning portion, 76a ... first positioning surface, 76 b ... second positioning surface, 200 ... light-emitting portion, 400 ... receiving portion

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PCT/JP2017/004228 2017-02-06 2017-02-06 ガラスびんの検査装置 WO2018142614A1 (ja)

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KR1020197022224A KR102287992B1 (ko) 2017-02-06 2017-02-06 유리병 검사장치
JP2018565224A JP6827060B2 (ja) 2017-02-06 2017-02-06 ガラスびんの検査装置
PCT/JP2017/004228 WO2018142614A1 (ja) 2017-02-06 2017-02-06 ガラスびんの検査装置
CN202210462656.XA CN114813787A (zh) 2017-02-06 2017-02-06 玻璃瓶的检查装置
CN201780085631.XA CN110431405B (zh) 2017-02-06 2017-02-06 玻璃瓶的检查装置
PH12019501547A PH12019501547A1 (en) 2017-02-06 2019-07-01 Glass bottle inspection device

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CN110431405B (zh) 2022-06-14
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