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WO2012035657A1 - Système de façonnage de produits en verre - Google Patents

Système de façonnage de produits en verre Download PDF

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Publication number
WO2012035657A1
WO2012035657A1 PCT/JP2010/066218 JP2010066218W WO2012035657A1 WO 2012035657 A1 WO2012035657 A1 WO 2012035657A1 JP 2010066218 W JP2010066218 W JP 2010066218W WO 2012035657 A1 WO2012035657 A1 WO 2012035657A1
Authority
WO
WIPO (PCT)
Prior art keywords
gob
image
adjacent
gobs
molding machine
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2010/066218
Other languages
English (en)
Japanese (ja)
Inventor
良紀 三条
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyo Glass Co Ltd
Original Assignee
Toyo Glass Co Ltd
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 Toyo Glass Co Ltd filed Critical Toyo Glass Co Ltd
Priority to PCT/JP2010/066218 priority Critical patent/WO2012035657A1/fr
Priority to JP2010546136A priority patent/JP5260682B2/ja
Publication of WO2012035657A1 publication Critical patent/WO2012035657A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B7/00—Distributors for the molten glass; Means for taking-off charges of molten glass; Producing the gob, e.g. controlling the gob shape, weight or delivery tact
    • C03B7/005—Controlling, regulating or measuring
    • 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
    • G01N21/85—Investigating moving fluids or granular solids
    • 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

Definitions

  • the present invention is a glass product molding system having a glass molding machine such as a so-called IS molding machine, and in particular, a spout for generating gob from molten glass is provided with a plurality of orifices serving as outlets of the molten glass.
  • a glass molding machine such as a so-called IS molding machine
  • a spout for generating gob from molten glass is provided with a plurality of orifices serving as outlets of the molten glass.
  • Patent Documents 4 to 6 devices or methods for measuring the volume or weight of a gob inserted into a mold when a large amount of glass products such as glass bottles are produced with a molding machine are disclosed in Patent Documents 4 to 6 below.
  • Patent Document 6 further describes that the three-dimensional data of the gob shape is compared with the suitable gob shape data to improve the quality of the glass product by bringing the gob shape closer to the appropriate gob shape.
  • the gob inspection by the gob image is a defective gob in which bubbles or foreign matters are mixed even though there is no defect.
  • Many good products were excluded as defective products.
  • the cause of the misjudgment was found to be that the light emitted by the adjacent gob was reflected in the gob image. .
  • FIG. 6 illustrates an example of a method of performing gob image A in which light emitted from the adjacent gob is reflected and determining whether the gob is good or bad.
  • the gob image A the gob 5 is bright and the background is dark.
  • the ambient glow portion 51, the reflection portion 52, and the defect 53 are particularly brighter than the other general portions.
  • the ambient glow portion 51 is not a defect, but is a portion that appears bright as a result of light refracted and reflected from the gob outer peripheral surface.
  • the reflection portion 52 is not a defect, and is a portion that appears bright as a result of the light emitted from the adjacent gob entering the gob 5 and being reflected and refracted by the outer peripheral surface of the gob.
  • the defect 53 is a portion that looks bright because bubbles and foreign matter have entered the gob. If a glass product is molded with a gob containing bubbles or foreign matter, the foam or foreign matter enters the glass of the glass product, resulting in a defective product. Therefore, such a gob is a bad gob.
  • an image B and an image C are created from the gob image A
  • an image D is created from the images B and C, and whether or not there is a defect is determined from the image D.
  • Image B is an image obtained by binarizing gob image A.
  • the binarization boundary value an appropriate brightness is selected between the brightness of the surrounding glow portion 51 and the defect 53 and the brightness of the general portion of the gob.
  • the ambient glow portion 51, the reflection portion 52, and the defect 53 are white, and the other portions are black. Since the reflection part 52 is as bright as the defect, the image B becomes white.
  • Image C is an image obtained by binarizing Gob image A and reversing it in black and white.
  • the binarization boundary value in this case, an appropriate brightness brighter than the background brightness is selected so that the entire gob becomes white.
  • the entire gob is black and the background is white.
  • Image D is obtained by adding image B and image C.
  • black + black black
  • black + white white
  • white + white white
  • the outer peripheral shape of the black region is a shape obtained by removing the surrounding glow portion 51 from the outer peripheral shape of the gob. Thereby, it is possible to prevent erroneous determination of the ambient glow portion as a defect.
  • the reflection part 52 and the defect 53 are whitened.
  • the gob quality determination based on the image D is performed based on how much white portion is present in the black area of the image D. For example, in the black region of the image D, when the total number of pixels of the white portion exceeds a predetermined pixel number threshold, the gob can be determined as a defective gob. In addition, when there are a plurality of white portions in the black region of the image D, when the number of pixels of one of the white portions exceeds a predetermined pixel number threshold, the gob can be determined as a defective gob. In any case, since the surrounding glow portion 52 is in the black area of the image D, there is a high possibility that even a gob without the defect 53 is erroneously determined as a defective gob.
  • JP 2003-4649 A Japanese Unexamined Patent Publication No. 2000-19130 Japanese Patent Laid-Open No. 7-103915 Japanese Patent Publication No. 63-52326 JP-A-7-33445 WO2003 / 8348
  • the present invention includes a molding machine, A spout having a plurality of orifices; A gob inspection device that images a gob cut out from each orifice of the spout by a line scan camera that horizontally scans the gob, and determines the quality of the gob based on the captured gob image;
  • a glass product molding system having distribution means for distributing the falling gob to a mold of a molding machine
  • the glass product forming system is characterized in that a light shielding plate is provided at a height position picked up by the camera between adjacent gob trajectories so that the light emitted by the adjacent gob is not reflected in the gob image.
  • the light shielding plate may be any material that does not transmit light.
  • a metal plate having a width of 7 to 10 cm, a length of 30 to 35 cm, and a thickness of 2 to 3 mm can be used.
  • the gob inspection device has a line scan camera and processing means.
  • the line scan camera a commercially available general camera that mainly captures visible light can be used. Moreover, since the gob itself emits light, no illumination means is required.
  • a commercially available personal computer can be used as the processing means, but it is desirable to combine with a commercially available frame grabber and image processing software.
  • the height position at which the camera captures the gob is between the upper funnel and the lower funnel of the distributing means, and the light shielding plate is located between the upper funnel and the lower funnel between adjacent gob tracks. It is a glassware shaping
  • the space between the upper funnel and the lower funnel is most suitable. This is because the surrounding space is wide and suitable for installing a camera.
  • the glass product molding system of the present invention is formed with a defect-free gob or a defect-free gob, because a mis-judgment that determines a defect-free gob as a defective gob in the gob pass / fail determination by the gob inspection device is prevented.
  • the glass product is not excluded as a defective product, and the production efficiency of the glass product can be improved.
  • FIG. 1 is a schematic view from when a gob is cut out until it is supplied into a mold (coarse mold).
  • the spout 20 filled with the molten glass 25 is provided with two sets of an orifice 21, a tube 23 that rotates the shear 22, and a plunger 24 that moves up and down.
  • each plunger 24 descends and the molten glass 25 is pushed out of the orifice 21, each shear 22 is actuated to cut it, and the two gobs 5 are cut off almost simultaneously and dropped.
  • Each dropped gob 5 is supplied into the mold 11 through an upper funnel 30, a lower funnel 32, a scoop 33, a trough 34, and a deflector 35 which are gob distributing means.
  • the trough 34, the deflector 35, and the mold 11 are provided for each of a plurality of sections of the molding machine, and the scoop 33 sequentially supplies two gobs to the molds of the plurality of sections.
  • Such gob distribution means is well known in so-called IS molding machines.
  • a plurality of line scan cameras 4 are provided aiming at the gob 5 falling from the upper funnel 30 and entering the lower funnel 32. Since the environment in which the line scan camera is installed is hot, it is desirable to cool the camera by storing it in a cooling box (not shown). Data from the line scan camera 4 is sent to a personal computer through a frame grabber, image processing is performed, and it is determined whether bubbles or foreign matter are mixed in the gob.
  • the line scan camera 4 captures the surface of the moving body in a horizontal line field, scans at a constant pitch, and outputs it as a video signal.
  • the camera used this time has 2048 pixels in the horizontal direction and can capture images with high resolution.
  • the entire surface of the gob is captured as image data.
  • the processing means of the gob inspection apparatus is a commercially available computer (personal computer), which has built-in storage means (memory, hard disk), and is connected to display means 4 (monitor) and input means (keyboard, mouse). Desired information such as a gob image and various images obtained by processing the gob image can be displayed on the display means. Furthermore, commercially available image processing software is incorporated and a frame grabber is connected.
  • the light emitted by the gob 5 is reflected in the gob image picked up by the camera 4 at the height position picked up by the camera 4 between two adjacent gob trajectories, that is, between the upper funnel 30 and the lower funnel 32.
  • the light shielding plate 6 is installed so as not to be present.
  • the material of the light shielding plate is not particularly limited as long as it does not transmit light.
  • the size of the light shielding plate is not particularly limited as long as the light of the adjacent gob is not reflected in the gob image.
  • the IS molding machine 1 has ten sections from the first section to the tenth section (circle numbers in FIG. 2 represent section numbers), and the first section is the most downstream side of the conveyor 12, the tenth section. The section is the most upstream.
  • the control system attached to the IS molding machine 1 has a shear cut signal, a timing signal, and a reset signal.
  • the shear cut signal is a pulse signal generated when the control system operates the shear 22.
  • the timing signal is a pulse signal synchronized with the operation speed of the IS molding machine. For example, 1800 pulses are output while completing one cycle of operation (while completing molding once in all sections).
  • the timing of shear cutting for cutting the gob, the operation of all parts of the molding machine, the conveying speed of the conveyor 12, etc. are synchronized with this timing signal.
  • the reset signal is one pulse output every time the IS molding machine 1 completes one cycle of operation.
  • the processing means receives the shear cut signal, the timing signal, and the reset signal from the control system of the IS molding machine 1, so that the glass product 6 molded from the inspected gob is conveyed to the front of the rejector 13 and operates the rejector 13. Know the timing.
  • FIG. 2 shows a state in which the glass product 7 (glass bottle) molded by the molding machine 1 enters the slow cooling furnace 16.
  • Two gobs inspected at the same time by the gob inspection device are loaded into two rough molds in one section of the IS molding machine 1, and are subjected to parison molding and finish molding in the molding machine.
  • the glass product 6 is sent out on the conveyor 12, transported toward the slow cooling furnace 16, and sent into the slow cooling furnace 16 by the pusher 15.
  • the rejector 13 is provided beside the conveyor 12 between the IS molding machine 1 and the slow cooling furnace 16.
  • As the rejector a well-known type such as a type in which glass products on a conveyor are blown away with air or a type to extrude can be used.
  • the processing means can operate the gob removal device 30 (FIG. 1) to exclude the gob.
  • the defective gob is not excluded, and the glass product formed from the defective gob can be removed to the disposal unit 14 by the rejector while being conveyed on the conveyor between the molding machine and the slow cooling furnace.
  • the gob itself is excluded, a mold that does not mold the product (one-pass) is generated, the mold cools down, and defects such as microcracks and wrinkles may occur in the next molded product.
  • the product is removed from the molding machine to the slow cooling furnace by sending a molding machine timing signal to the processing means, and the processing means eliminates the product molded with the inspected gob reaching the front of the rejector. This is because it is possible to grasp the timing to perform individually, and to accurately eliminate products molded from defective gobs.
  • FIG. 4 is an example of a gob image when no light shielding plate is installed. Two adjacent gobs are imaged in the gob image, and the reflection part 52 is projected brightly on the right gob.
  • the reflection portion 52 is a portion that appears bright as a result of the light emitted from the adjacent left gob entering the right gob 5 and being reflected and refracted by the outer peripheral surface of the gob.
  • Reference numeral 51 denotes an ambient glow portion.
  • FIG. 5 is an example of a gob image according to an embodiment of the present invention in which a light shielding plate is installed.
  • a light shielding plate is installed in FIG. 5, there is no reflection part 52, and only the surrounding glow part 51 is bright in the gob. Since the ambient glow portion is removed by image processing (image D), it is not erroneously determined as a defect.

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  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

La présente invention a pour objet d'éviter les erreurs d'évaluation faisant que des paraisons exemptes de défauts sont évaluées comme défectueuses, et vise à améliorer l'efficacité lors de la production de produits en verre. La présente invention concerne donc un système de façonnage de produits en verre comportant un dispositif de contrôle des paraisons qui évalue la qualité desdites paraisons sur la base de photographies des paraisons prises après que ces dernières aient été séparées des orifices d'une cuvette comportant plusieurs orifices, les erreurs d'évaluation susmentionnées étant évitées en disposant un écran pare-lumière entre les trajets de paraisons adjacentes de façon à empêcher la lumière émise par les paraisons adjacentes d'être projetée sur l'image d'une paraison.
PCT/JP2010/066218 2010-09-17 2010-09-17 Système de façonnage de produits en verre Ceased WO2012035657A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2010/066218 WO2012035657A1 (fr) 2010-09-17 2010-09-17 Système de façonnage de produits en verre
JP2010546136A JP5260682B2 (ja) 2010-09-17 2010-09-17 ガラス製品成形システム

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2010/066218 WO2012035657A1 (fr) 2010-09-17 2010-09-17 Système de façonnage de produits en verre

Publications (1)

Publication Number Publication Date
WO2012035657A1 true WO2012035657A1 (fr) 2012-03-22

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PCT/JP2010/066218 Ceased WO2012035657A1 (fr) 2010-09-17 2010-09-17 Système de façonnage de produits en verre

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JP (1) JP5260682B2 (fr)
WO (1) WO2012035657A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101400220B1 (ko) * 2010-09-17 2014-05-27 도요세이칸 그룹 홀딩스 가부시키가이샤 유리 제품의 곱 검사 장치

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0448251A (ja) * 1990-06-18 1992-02-18 Asahi Chem Ind Co Ltd 瓶検査装置
JP2001270719A (ja) * 2000-03-28 2001-10-02 Toyo Glass Co Ltd ガラスびん
JP3623329B2 (ja) * 1996-12-04 2005-02-23 日本山村硝子株式会社 重量検出方法と装置、これらを用いた定量供給装置
JP2005227257A (ja) * 2004-01-16 2005-08-25 Nakagami Corporation:Kk 円筒型容器の外周面検査装置
JP2008076138A (ja) * 2006-09-20 2008-04-03 Seiko Epson Corp 基板の検査装置及び検査方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0448251A (ja) * 1990-06-18 1992-02-18 Asahi Chem Ind Co Ltd 瓶検査装置
JP3623329B2 (ja) * 1996-12-04 2005-02-23 日本山村硝子株式会社 重量検出方法と装置、これらを用いた定量供給装置
JP2001270719A (ja) * 2000-03-28 2001-10-02 Toyo Glass Co Ltd ガラスびん
JP2005227257A (ja) * 2004-01-16 2005-08-25 Nakagami Corporation:Kk 円筒型容器の外周面検査装置
JP2008076138A (ja) * 2006-09-20 2008-04-03 Seiko Epson Corp 基板の検査装置及び検査方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101400220B1 (ko) * 2010-09-17 2014-05-27 도요세이칸 그룹 홀딩스 가부시키가이샤 유리 제품의 곱 검사 장치

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Publication number Publication date
JPWO2012035657A1 (ja) 2014-01-20
JP5260682B2 (ja) 2013-08-14

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