CN105121092B - Glass plate manufacturing method, glass plate manufacturing device and glass plate - Google Patents
Glass plate manufacturing method, glass plate manufacturing device and glass plate Download PDFInfo
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- CN105121092B CN105121092B CN201480022155.3A CN201480022155A CN105121092B CN 105121092 B CN105121092 B CN 105121092B CN 201480022155 A CN201480022155 A CN 201480022155A CN 105121092 B CN105121092 B CN 105121092B
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- glass plate
- face
- standard deviation
- image
- bump maps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/12—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving optical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
- B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
- B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
- B24B9/08—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
- B24B9/10—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of plate glass
- B24B9/102—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of plate glass for travelling sheets
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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
- G01N21/89—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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Health & Medical Sciences (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Textile Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Surface Treatment Of Glass (AREA)
Abstract
The present invention relates to a glass plate manufacturing method provided with a process for grinding the edges of a glass plate and a control process for controlling the strength of the ground edges, the method being characterized in that the control process is provided with: an imaging process for imaging the edges of the glass plate using an imaging means; a contour image-acquiring process for image-processing the images of the edges using an image-processing means to acquire contour images of the edges; a standard deviation-calculating process for calculating the standard deviation of the imaging means pixel numbers configuring the contour images using a calculating means on the basis of the pixel numbers; and a bending strength-converting process for converting the standard deviation to data that correlates with bending strength using a strength-converting means.
Description
Technical field
The present invention relates to the manufacture device and glass plate of the manufacture method of glass plate and glass plate.
Background technology
As the flat faced display (FPD that liquid crystal display use or plasma display are used and used：Flat Panel
Display) with glass plate in manufacturing process, its end face carries out grinding (chamfer machining) by chamfering abrasive wheel.
Patent Document 1 discloses following situation：In the grinding of the end face of glass plate, according to producing in end face
Burn (Dimming：Dimmed or Staining：Coloring), the difference of degree inclined of volume, glass plate can be damaged.In patent documentation 1
In, the end face of glass plate is shot using laser microscope, by carrying out black white binarization process to its image, and will be present in end
Recess (concave) identification in face recognizes the flat part for becoming the minute surface of end face as picture black, based on white as white image
The area of image evaluate relative to the ratio of the area of picture black the end face of glass plate character (roughness, burn, volume incline
Deng).
And, Patent Document 2 discloses the scar that the end face in glass plate is present is to affect the machinery of glass plate strong
One of factor (equivalent to bending strength) of degree, and disclose and pass through to have to improve the mechanical strength of glass plate than 500
The emery wheel of the abrasive particle of the particle of fine size carries out the situation of grinding to end face.
Additionally, Patent Document 3 discloses the end face to glass plate shooting, examined based on the brightness value of its image
Look into the end face inspection method of the surface roughness of end face.
On the other hand, the bending strength of glass plate is by according to JIS R1601：2008 or ISO 14704：4 points of 2000
Bend test or 3 bend tests are checked, and are evaluated as breakdown strength.
【Citation】
【Patent documentation】
【Patent documentation 1】International Publication No. 2012/005019
【Patent documentation 2】Japanese Laid-Open 2001-261355 publication
【Patent documentation 3】Japanese Laid-Open 2011-227049 publication
The content of the invention
【The invention problem to be solved】
FPD is checked with the bending strength of glass plate by above-mentioned 4 bend tests or 3 bend tests, but is somebody's turn to do
Test is the test implemented for 1 glass plate arbitrarily chosen from multiple glass plates of 1 batch.Therefore, the test is certain
It is not the test that whole glass plates of manufacture are checked.
And, although patent documentation 1,3 carries out image procossing to the end view drawing picture of glass plate, not based on its knot
Fruit is managing the bending strength of glass plate.
Additionally, patent documentation 2 only describes the grain size number (emery wheel for avoiding the emery wheel of the bending strength for reducing glass plate
Granularity), the bending strength of glass plate is not managed based on the end view drawing picture of glass plate.
The present invention in view of such situation and make, its object is to provide one kind do not destroy glass plate and glass can be managed
The manufacture method of the glass plate of the intensity of glass plate and the manufacture device of glass plate and glass plate.
【For solving the scheme of problem】
The present invention is in order to realize the purpose, there is provided a kind of manufacture method of glass plate, possesses the end face to glass plate and enters
The grinding operation of row grinding and to grinding after the end face the management operation that is managed of intensity, it is special
Levy and be, the management operation possesses following operation：Shooting operation, is clapped the end face of the glass plate using image unit
Take the photograph；Bump maps picture obtains operation, and image procossing is carried out to the image of the end face using graphics processing unit, obtains the end face
Bump maps picture；Standard deviation operational process, based on the pixel count of the image unit for constituting the bump maps picture, using fortune
Calculate the standard deviation that unit carrys out pixel count described in computing；And bending strength converting process, using intensity-conversion unit by the mark
Quasi- deviation is converted into the data related to bending strength.
One scheme of the present invention is based on the opinion of the present application person as described below and makes：In the end face to glass plate
When carrying out grinding the end face of glass plate and the boundary corner part of the interarea of glass plate produce it is small concavo-convex
(unevenness) there is dependency with the bending strength of glass plate.That is, the end face of glass plate it is orthogonal to the longitudinal direction just
The standard deviation of described concavo-convex size on direction (width) is handed over to there is dependency so with the bending strength of glass plate
Opinion.Specifically, glass plate when being conceived to bending strength rising and the big standard deviation of standard deviation hour glass plate
Bending strength reduces such tendency, based on the standard deviation for calculating rather than destructively manages the intensity of glass plate.
Here, the described concavo-convex size described in the present invention refer to the boundary corner part of end face and interarea it is interarea,
The length (hereinafter also referred to as width dimensions) of the orthogonal direction orthogonal with the length direction of end face.The width dimensions are by clapping
Having taken the photograph the pixel count of the image unit of the end face comprising the boundary corner part and carrying out counting to obtain.That is, 1 picture is preset
The length of element amount, according to each row come the pixel of 1 row of in the multiple pixels for counting the image for the constituting end face, orthogonal direction
Number, thus, it is possible to obtain the width dimensions per 1 row.It should be noted that the principal character of the present application is not to obtain width
Size, but by the pixel count per 1 row different according to recess (concave) and convex portion (convex) (equivalent to computing
The data of a group of standard deviation interval) standard deviation manage the bending strength of glass plate with carrying out non-demolition.
A scheme of the invention, first, in shooting operation, using image unit the end face of glass plate is shot.That is,
The end face comprising concavo-convex existing boundary corner part is shot using image unit.Then, obtain in operation in bump maps picture, profit
Image procossing (black white binarization process) is carried out to the image of the end face of glass plate with graphics processing unit, the concavo-convex of end face is obtained
Image (picture black).Then, the picture per 1 row in standard deviation operational process, based on the image unit for constituting bump maps picture
Prime number, using arithmetic element come the standard deviation of computing pixel count.Also, in bending strength converting process, turned using intensity
Change unit and the standard deviation is converted into into the data related to bending strength.
Thus, a scheme of the invention, manages the bending strength of glass plate in which can not destroy glass plate, and,
In the manufacturing process of glass plate, the variation of the bending strength of glass plate can be totally managed online.
Bending strength corresponding with standard deviation is previously stored with the intensity-conversion unit.It is stored in intensity-conversion
The data of the bending strength corresponding with standard deviation of unit are following data：Have accumulated by according to JIS R1601：2008 or
ISO 14704：The data of the bend test result of the glass plate that 2000 4 bend tests or 3 bend tests are checked.Mark
There is inversely proportional relation in the bending strength of quasi- deviation and glass plate, i.e. as standard deviation becomes big and the bending of glass plate is strong
Tendency of the degree in declining.
And, in the shooting operation, there is also and the fluctuating of the interarea of glass plate or step are judged as into the recessed of end face
The situation of convex situation or the exceptional value caused the shortcomings of produce by chip, therefore preferably by the end face of glass plate in length direction
It is upper segmentation and shot.
And, there is also for the total length image of end face is integrally carried out in the image in the standard deviation operational process
The method of the computing of standard deviation, but if the method, then the delicate inclination of glass edge or the fluctuating at edge can be worked as
Make concavo-convex.
Therefore, a scheme of the invention is preferably, in the standard deviation operational process, using the image unit
Dividedly shoot and obtained in multiple bump maps pictures of the end face that operation is achieved, for each institute by the bump maps picture
Multiple standard deviations of concavo-convex image operation first are stated, multiple first standard deviations is averaged, after equalization
Second standard deviation is used as the standard deviation.
One scheme of the present invention is preferably, and in the standard deviation operational process, is being split using the image unit
Ground shoots and is obtained in multiple bump maps pictures of the end face that operation is achieved by the bump maps picture, many for each described
The individual standard deviation of concavo-convex image operation first, using the median of multiple first standard deviations as the standard deviation.
Thereby, it is possible to excluding the shortcoming of the end face generation in glass plate, being attached to the dry of the dust of end face of glass plate etc.
Disturb, i.e., the substantially few data of the pixel count of 1 row or substantially many data can obtain more accurately evaluation of estimate.
One scheme of the present invention is preferably, and the plurality of bump maps picture is so that adjacent bump maps are as part overlap
Mode is set.
A scheme of the invention, is overlapped, without omission by making a bump maps picture part for adjacent end face
Ground shoots end face whole region.Thereby, it is possible to will only have the end face strength more than desired glass plate to follow-up operation
Transmission.
One scheme of the present invention is preferably, and the plurality of bump maps picture is making adjacent bump maps as nonoverlapping mode
Set.
A scheme of the invention, including adjacent bump maps are as underlapped situation, for example, adjacent bump maps picture
Situation about being concatenated and the situation that interval is vacated between adjacent bump maps picture.Accordingly, for the 1 of the equal length of glass plate
Side, can reduce the number of times of imaging of the end face carried out by image unit, can shorten the time of management process took.
One scheme of the present invention is preferably, and the glass plate is rectangular shape, for the end face on 4 sides of the glass plate
Standard deviation described in computing.
A scheme of the invention, in the end face computing standard deviation on whole sides of the glass plate of rectangular shape, therefore
The reliability of the intensity of glass plate is improved.
One scheme of the present invention is preferably, and the glass plate is glass for flat panel display plate.
A scheme of the invention, the flat faced display glass that high-quality can be required with the total management in volume production basis
The bending strength of glass plate.
One scheme of the present invention is in order to realize the purpose, there is provided a kind of manufacture device of glass plate, it is characterised in that press
The management operation of the manufacture method of the glass plate of the present invention is automatically carried out according to the operation for having programmed in advance.
A scheme of the invention, manages the bending strength of glass plate in which can not destroy glass plate, and, in glass
In the manufacturing process of plate, it is also possible to manage the variation of the bending strength of glass plate totally online.
One scheme of the present invention provides a kind of glass plate, is entered using the management operation of the manufacture method of the glass plate of the present invention
Inspection is gone, it is characterised in that mean intensity is more than 110MPa.
A scheme of the invention, using the teaching of the invention it is possible to provide one kind is according to JIS R1601：2008 or ISO 14704：2000
In 4 bend tests, mean intensity ensure for more than 110MPa intensity glass plate.
One scheme of the present invention preferably glass plate is glass for flat panel display plate.
An a kind of scheme of the invention, using the teaching of the invention it is possible to provide glass for flat panel display plate that ensure that intensity.
【Invention effect】
As described above, the manufacture method of glass plate of the invention and the manufacture device of glass plate and glass
Plate, manages the intensity of glass plate in which can not destroy glass plate, and, the bending strength of glass plate can be totally managed online
Variation.
And, in accordance with the invention it is possible to provide a kind of glass plate that ensure that intensity.
Description of the drawings
Fig. 1 is the axonometric chart of the intensity management device of the glass plate of embodiment.
Fig. 2 is the block diagram of the structure for representing the intensity management device shown in Fig. 1.
Fig. 3 is the side view of the intensity management device shown in Fig. 1.
Fig. 4 is the schematic diagram of the structure for representing the image pickup part shown in Fig. 1.
Fig. 5 is the explanatory diagram of the image of 1 shooting amount of the end face for schematically showing glass plate.
Fig. 6 is the explanatory diagram of the end view drawing picture for representing glass plate.
Fig. 7 is the explanatory diagram of the end view drawing picture for representing glass plate.
Fig. 8 is the general profile chart of the end of glass plate.
Fig. 9 (a) and Fig. 9 (b) are the related figures for representing the relation between the standard deviation of end face and 4 bending strengths.
Specific embodiment
Hereinafter, according to accompanying drawing, the manufacture method of glass plate and the manufacture device of glass plate and glass of the present invention is illustrated
The preferred implementation of plate.
The glass plate manufacturing method of glass plate and the manufacture device of glass plate of the present invention possesses following management operation
Manufacture method and manufacture device, the management operation manages the glass for being particularly adapted to FPD based on standard deviation described later
The bending strength of glass plate.Specifically, have passed through the end face to glass plate by the shooting of the image units such as CCD camera to be ground
The end face (face of the boundary corner part comprising end face and interarea) of the glass plate after the operation of processing, the image based on end face
Pixel count carrys out computing standard deviation, and the standard deviation for calculating is converted into into the bending strength of glass plate.And, in glass plate
Manufacture method in, do not destroy glass plate, and can online manage the variation of the bending strength of whole glass plates.
On the other hand, glass plate of the invention is the manufacture method of the glass plate by the present invention and the manufacture dress of glass plate
Glass plate that carried out management, that standard deviation is less than 6.5 μm is put, is according to JIS R1601：2008 or ISO 14704：
In 2000 4 bend tests, mean intensity ensure that the FPD glass plates of the intensity (with reference to Fig. 9) of more than 110MPa.
(main structure of intensity management device 10)
Fig. 1 is the vertical of the intensity management device 10 of the glass plate 20 being mounted in the manufacture device of the glass plate of embodiment
Body figure.Fig. 2 is the block diagram of the structure for representing the intensity management device 10 shown in Fig. 1.
Intensity management device 10 shown in Fig. 1 possesses：Image pickup part 12；Possesses graphics processing unit 14 (with reference to Fig. 2) etc.
Control unit 16；And glass plate test section 18.Intensity management device 10 shoots the upper of the end face of glass plate 20 using image pickup part 12
End face a and lower surface b (with reference to Fig. 4).In FIG, relative end face 21A, the 21B with glass plate 20 relatively possesses 2 and takes the photograph
Picture portion 12, while carrying out the shooting of the upper surface a and lower surface b of end face 21A, 21B.It should be noted that, although in FIG not
Diagram, it is preferred that the upper surface a and lower surface b that possess another relative end face 22A, the 22B to glass plate 20 shoot
Other 2 image pickup parts 12.In this case, if glass plate 20 relative to the glass plate 20 shown in arrow A carrying direction
Direction will be carried and be changed to the direction orthogonal with horizontal direction, and the image pickup part 12 that end face 22A is arranged as opposed to an other side,
With the image pickup part 12 that end face 22B is arranged as opposed to other the opposing party.Thereby, it is possible to the glass that rectangular shape is carried on one side
Plate 20, while shooting the upper surface a and lower surface b of whole end face 21A, 21B, 22A, 22B of glass plate 20.By shooting upper end
Face a and lower surface b, can shoot upper surface (interarea) 23A and following table of whole end face 21A, 21B, 22A, 22B and glass plate 20
The boundary corner part of face (interarea) 23B.
<Glass plate 20>
In the following description, as FPD glass plates 20, it is heat-resisting that illustration is practically free of alkali composition, low thermal expansion, height
Property etc. excellent alkali-free glass, and thickness for 0.2mm～0.7mm liquid crystal display (LCD) glass plate, but do not limit
In this.For example, it is also possible to be plasma scope (PD), field-emitter display (FED) and organic el display glass
Plate.And, the thickness is one without being defined to above-mentioned thickness.
No matter the size of glass plate 20 for the third generation glass plate (550mm × 650mm), the glass plate (680mm of forth generation
× 880mm), the glass plate (1000mm × 1200mm) in the 5th generation, the glass plate (1500mm × 1800mm) in the 6th generation, the 7th generation
Glass plate (1900mm × 2200mm), the glass plate (2200mm × 2400mm) of eighth generation, the glass plate (2400mm in the 9th generation
× 2800mmm) and the glass plate (2800mm × 3000mm) in the tenth generation in which, can without any problems apply this
It is bright.
Especially in the 7th glass plate 20 more than generation, the effect of the loss in reduction volume production operation is bigger, Neng Goufei
The production efficiency that jump property ground extends in special manufacturing procedure as mirror finish.As entering to end face in chamfer machining operation
The mode of row processing, can enumerate for example will be arranged as opposed to the end face of glass plate 20 revolving wheel (the chamfering sand of machined surface
Wheel) end face of glass plate 20 is pressed against, the level being processed to the end face of glass plate 20 is processed or polishing.Either which
Planting processing mode can realize the end face processing of high-quality, and does not reduce the process velocity of manufacturing procedure and be able to maintain that certain
Volume of production.
<The handling system of glass plate 20>
Fig. 3 is to observe the side-looking of image pickup part 12 from the end face 21A sides by multiple transport rollers 46, the glass plate 20 of 46 ... carryings
Figure.In figure 3, although diagram 3 transport rollers 46,46 ..., but transport roller 46 configure more than 4.Multiple transport rollers 46,46 ...
The lower surface 23B of glass plate 20 is supported, by the rotation of transport roller 46,46 ... by glass plate 20 to arrow A directions
The level of carrying out carrying.Image pickup part 12 is configured between adjacent transport roller 46,46.
Glass plate 20 in manufacturing process, after have passed through the grinding portion of the grinding for carrying out end face, Jing Guoqing
/ drying process is washed, is carried from transport roller 46 to intensity management device 10.It should be noted that being obtained by intensity management device 10
To glass plate 20 the standard deviation of end face and the grinding from the information of intensity to the leading portion for being configured in manufacturing process
Portion feeds back, and is utilized as replacing information, processing conditionss modification information of abrasive grinding wheel etc..
<Image pickup part 12>
Image pickup part 12 shown in Fig. 1 has main part 26, and the main part 26 possesses depression (concave) position 24, glass
End face 21A, 21B of plate 20 is by the space that surrounded by depressed area 24.Also, image pickup part 12 possesses carries out infiltration type shooting
The light source 32 corresponding with camera 28 of camera 28,30 and the light source 36 corresponding with camera 30 of collimating lens 34 and collimating lens 38.
Image pickup part 12 shoots the boundary corner part of end face 21A and upper surface 23A comprising glass plate 20 by camera 28 from oblique direction
The upper surface a (with reference to Fig. 4) on (1 side), by camera 30, from obliquely downward to end face 21A of the shooting comprising glass plate 20 and following table
The lower surface b (with reference to Fig. 4) of the boundary corner part (1 side) of face 23B.
It should be noted that with regard to the image pickup part 12 configured in the end face 21B sides of glass plate 20, although eliminate camera
28th, 30 etc. diagram, but the image pickup part 12 of end face 21B sides is also identical with the structure of the image pickup part 12 of end face 21A sides.And,
In FIG, in order to express the structure of image pickup part 12, the table in the way of main part 26 staggers relative to vertical axises 90 degree of positions
Show.
And, in image pickup part 12, relative to the vertical direction and phase of the upper surface 23A and lower surface 23B of glass plate 20
Shooting direction (optical axis) angulation of machine 28,30 is set as 14 °.Angle is not defined to 14 °, but by the way that angle is set
Be set to such as 14 ° grades like that, be prevented from camera 28 and light source 36 and collimating lens 38 interference or camera 30 and light source 32 and
The interference of collimating lens 34.It should be noted that the position of camera 28,30 can also be slightly wrong along the carrying direction of glass plate 20
Open.
Fig. 4 is the schematic diagram of the structure for representing image pickup part 12.
And, figure 4 illustrates from glass plate 20 and carry situation, camera 28,30 and the camera that direction side is observed
The allocation position of 28 corresponding light sources 32 and collimating lens 34 and light source 36 corresponding with camera 30 and collimating lens 38.
Glass plate 20 is carried by transport roller 46, and the end face 21A of glass plate 20 by the depressed area 24 of image pickup part 12 by being enclosed
Into space.And, in the diagram, on end face 21A, the position for having carried out grinding by chamfering abrasive wheel is represented by thick line.Need
It is noted that in the diagram, the image pickup part 12 of end face 21A sides is only illustrated, but the transport path across glass plate 20 is being held
The image pickup part 12 of same structure is also configured with the 21B of face.
Camera 28 is configured in the upper surface 23A sides of glass plate 20, and from upper surface 23A sides the end face 21A of glass plate 20 is shot.
Light source 32 corresponding with camera 28 is arranged as opposed to across depressed area 24 with camera 28, towards the irradiation light of camera 28.Also,
Light passes through collimating lens 34, thus to the incident parallel light of camera 28.From the light of the irradiation of light source 32 via collimating lens 34 as flat
Row light is incident nearby to the end face 21A of glass plate 20, and the light for having passed through glass plate 20 is incident to camera 28.Therefore, camera 28 with
Infiltration type images to shoot the upper surface a of the end face 21A of glass plate 20.
Camera 30 is configured in the downside of glass plate 20, and from downside the end face 21A of glass plate 20 is shot.It is corresponding with camera 30
Light source 36 is arranged as opposed to across depressed area 24 with camera 30, towards the irradiation light of camera 30.Also, light passes through collimating lens
38, thus to the incident parallel light of camera 30.From light source 36 irradiation light via collimating lens 38 as directional light to glass plate 20
End face 21A it is incident nearby, the light for having passed through glass plate 20 is incident to camera 30.Therefore, camera 30 is clapped with infiltration type shooting
Take the photograph the lower surface b of the end face 21A of glass plate 20.
That is, glass plate 20 passes through image pickup part 12, thus, it is possible to shoot upper surface a and lower surface b simultaneously.
<Control unit 16>
The shooting Separation control that control unit 16 shown in Fig. 2 shoots the 1 of camera 28,30 is into such as ms interval.That is, phase
Machine 28,30 is split on the length direction (length direction on 1 side of glass plate) of end face 21A, 21B to end face 21A, 21B
Shoot.Shooting interval is set based on the transporting velocity of glass plate 20, the size of the imaging apparatuss of camera 28,30 and pixel count.
And, shooting interval is preferably able to the shooting interval in the whole face of end face 21A, the 21B for shooting glass plate 20.Specifically, dividing
In the multiple images cut, preferably set in the way of adjacent image local is overlapped.It should be noted that can also be, to keep away
The mode for exempting from adjacent image overlap sets.
Fig. 5 is the explanatory diagram of the image of 1 shooting amount of the end face for schematically showing glass plate 20.
Range Representation shown in the arrow B of Fig. 5 staggers every time the regulation of 1 pixel on the length direction of end face 21A, 21B
Operating range.The length of whole arrow B is identical.In computing/control unit (arithmetic element) 42 described later, according to institute
State operating range to calculate standard deviation, calculate the mobile standard of the meansigma methodss as 1 shooting amount of the multiple standard deviations for obtaining
Deviation (Moving Standard Deviation：First standard deviation).Also, according to the multiple 1 shooting amounts for constituting 1 side
The mobile standard deviation of image exports median as the evaluation of estimate (standard on the side calculating median (the second standard deviation)
Deviation).
And, as shown in Fig. 2 control unit 16 possesses graphics processing unit 14, display equipment 40, is built-in with RAM or ROM
Computing/the control units 42 and intensity-conversion unit 44 etc. such as the MPU or CPU etc. memory element.
Image P, Q of the end face of the image shown in 14 couples of Fig. 6 photographed by camera 30 and Fig. 7 of graphics processing unit is carried out
Black white binarization processes (image procossing) and obtains bump maps picture.Image P, Q of end face is displayed on display equipment 40.
The end face of Fig. 6 is ground by grain size number (granularity of emery wheel) the little abrasive grinding wheel of the end face than Fig. 7
End face after processing, according to the image P of Fig. 6, more clearly shows concavo-convex compared with the image Q of Fig. 7.
In the image of Fig. 6, clip the image P of end face and there is white image R1 in upside and there is white image in downside
S1.And, the image of Fig. 7 similarly clips the image Q of end face and there is white image r1 in upside and there is white figure in downside
As s1.
Fig. 8 is the general profile chart of the end of glass plate 20.Sectional view to Fig. 8 and the relation between the image of Fig. 6 are entered
Row explanation.
White image R1, r1 shown in Fig. 6, Fig. 7 is the image (spatial image) of the camera watch region 1 of Fig. 8.Shown in Fig. 6, Fig. 7
End face image P, Q be Fig. 8 camera watch region 2 image.White image S1, s1 shown in Fig. 6, Fig. 7 is the camera watch region of Fig. 8
3 image (image of the lower surface 23B of glass plate 20).
Also, the boundary corner part 5,6 of image P, Q of white image R1, r1 and end face of Fig. 6, Fig. 7 is present in Fig. 8
The boundary corner part (ridge line section) 5,6 of the substantially central portion of end face 21A.And, white image S1, s1 of Fig. 6, Fig. 7 and end face
The boundary corner part 7,8 of image P, Q is the boundary corner part (ridge line section) 7,8 of the end face 21A and lower surface 23B of Fig. 8.According to figure
6th, Fig. 7 understands that corner part 7,8 produces concavo-convex in boundary.
Computing/control unit 42 is performed according to the order of regulation and is pre-stored within the of the invention strong of the memory element
The program of degree management method.Thus, according to image P, Q of the end face of glass plate 20 come computing standard deviation described later.To intensity
The operator that managing device 10 is monitored manages the intensity of glass plate based on the standard deviation for calculating.And, base
In standard deviation also can forward operation grinding operation give information.
The standard deviation is converted into the numerical value (data) related to bending strength by intensity-conversion unit 44.The standard
Deviation and its variation and the numerical value preferably show to coordinate diagram on display equipment 40.
Glass plate test section 18 shown in Fig. 1 is the sensor for passing through for detecting glass plate 20.Glass plate test section 18 is examined
Measure the situation that the end face 22A of the direct of travel side of glass plate 20 has passed through near the allocation position of glass plate test section 18.
In example shown in Fig. 1, glass plate test section 18 is configured in the upstream of the transport path of glass plate 20 relative to image pickup part 12
Side, the end face 22A for detecting glass plate test section 18 has passed through the situation of the underface of glass plate test section 18.
When glass plate test section 18 detect the end face 22A of glass plate 20 by when, control unit 16 control camera 28,30
Shooting start time, make camera 28,30 perform glass plate 20 end face 21A, 21B shooting.
(other modes of intensity management device 10)
Intensity management device 10 shown in Fig. 1 is for the end of the glass plate 20 in the shooting carrying in sheet manufacturing process
Face, and camera 28,30 is fixed to shoot end face, but in the case where glass plate 20 stops, it is also possible to making camera 28,30 edges
The length direction (length direction on 1 side of glass plate) for end face 21A, 21B moves to shoot end face 21A, 21B.And, also may be used
Whole end faces are shot with the shooting of 1 shooting using camera 28,30.
(the intensity management method based on intensity management device 10)
The intensity management method that intensity management device 10 is performed possesses：The end of glass plate 20 is shot using camera 28,30
The shooting operation of face 21A, 21B；Black white binarization process is carried out to the image of end face 21A, 21B using graphics processing unit 14,
The bump maps picture for obtaining the bump maps picture of end face 21A, 21B obtains operation；And the picture based on the camera 28,30 for constituting bump maps picture
Prime number, standard deviation operational process of standard deviation of computing pixel count etc. is carried out by computing/control unit 42.
The starting point of the present invention is, when end face 21A, the 21B to glass plate 20 carries out grinding, in glass plate 20
End face 21A, 21B and the small concavo-convex (reference that produces of the upper surface 23A of glass plate 20, the boundary corner part of lower surface 23B
Fig. 6, Fig. 7) it is related to the presence of the bending strength of glass plate 20.That is, end face 21A, 21B's of glass plate 20 is orthogonal to the longitudinal direction
Orthogonal direction (width) on described concavo-convex size standard deviation it is related to the presence of the bending strength of glass plate 20.
Specifically, it is conceived to standard deviation hour and glass plate 20 when the bending strength of glass plate 20 is raised, standard deviation is big
Bending strength reduces such tendency, manages based on the standard deviation calculated by computing/control unit 42 rather than destructively glass
The intensity of glass plate 20.
The concavo-convex size is by the length (width on the orthogonal direction orthogonal to the longitudinal direction of the end face of glass plate 20
Size) represent.In Figure 5, in end face 21A, 21B generation recess C, convex portion D, E, F, G, H are turgidly represented.
When being illustrated based on Fig. 5, length J of recess C, length K, L of convex portion D, E, F, G, H, that M, N, O can pass through is right
Shooting the pixel count of the camera 28,30 of end face 21A, 21B carries out counting to obtain.That is, the storage part in control unit 16 sets in advance
The length of fixed 1 amount of pixels, in multiple pixels of the image for constituting end face 21A, 21B, end face 21A, 21B are counted for each column
Width on 1 row pixel count, thus, it is possible to obtain per 1 row length (width dimensions).
It should be noted that the intensity management method of the present application is characterized mainly in that, be not obtain end face 21A,
The width dimensions of 21B, but indexing is carried out to the concavo-convex of end face 21A, 21B.That is, in order to recess C and convex portion D, E, F, G, H
Carry out indexing and calculate the standard deviation that operating range is set to B.And, manage with the resolution for improving camera 28,30
Reason precision is improved.
If as described above, based on the standard deviation that display equipment 40 is shown in by the computing of computing/control unit 42 come
The intensity of management glass plate 20, then do not destroy glass plate 20 and can manage the bending strength of glass plate 20, and in glass plate
In 20 manufacturing process, the variation of the bending strength of glass plate 20 can be totally managed online.
And, in standard deviation operational process, after dividedly being shot by camera 28,30 and having been carried out image procossing
End face 21A, 21B multiple bump maps pictures in, preferably carry out the standard deviation of computing first according to multiple bump maps pictures, to multiple
One standard deviation is averaged, using equalization after the second standard deviation as the side evaluation of estimate (standard deviation).
In the case where the length of end face 21A, 21B of glass plate 20 exceedes the shooting field range of camera 28,30,1
In the shooting of shooting, it is impossible to shoot the total length of end face 21A, 21B.Therefore, end face 21A, 21B are dividedly shot as mentioned above.This
In the case of kind, according to multiple bump maps pictures of segmentation the standard deviation of computing first is carried out, multiple first standard deviations are carried out averagely
Change, using equalization after the second standard deviation as the evaluation of estimate (standard deviation) used in bending strength converting process.
Furthermore, it is also possible to dividedly shoot end face 21A, 21B using camera 28,30, and according to image procossing after it is multiple
The bump maps picture of end face 21A, 21B carrys out the standard deviation of computing first, using the median of multiple first standard deviations as
Evaluation of estimate (standard deviation) used in bending strength converting process.
Thereby, it is possible to exclude the end face shortcoming for producing, end face 21A, 21B for being attached to glass plate 20 in glass plate 20
The interference of dust etc., i.e., the obvious few data of pixel count of 1 row or substantially many data such that it is able to more accurately evaluated
Value.
Adjacent bump maps picture is preferably overlapped setting by the bump maps picture split, but it is also possible to do not overlapped.
Overlapped by making an adjacent bump maps picture part, without shoot end face 21A, 21B whole area with omitting
Domain.Thereby, it is possible to only the glass plate 20 with desired end face strength above is transmitted to follow-up operation.
And, adjacent bump maps are as nonoverlapping situation is including the situation of adjacent bump maps picture link and adjacent
The situation at interval is vacated between bump maps picture.Accordingly, for 1 side of the equal length of glass plate 20, can reduce based on camera
28th, 30 number of times of imaging, can shorten the time of management process took.
In intensity management method, preferably in the end face computing standard deviation on 4 sides of glass plate 20.Thus, in glass plate
The end face computing standard deviation on 20 whole sides, therefore the reliability raising of the intensity of glass plate 20.
And, by the way that the intensity management method of embodiment is applied to into FPD glass plates 20, can be complete with volume production basis
Number management requires the bending strength of the FPD glass plates of high-quality.
Additionally, the control unit 16 of intensity management device 10 possesses intensity-conversion unit 44.
Bending strength corresponding with standard deviation is previously stored with the storage part of intensity-conversion unit 44.With stored
The data of the corresponding bending strength of standard deviation are have accumulated by according to JIS R1601：2008 or ISO 14704：The 4 of 2000
The data of the bend test result of the glass plate that point bend test or 3 bend tests are checked.
Fig. 9 (a) and Fig. 9 (b) are that the standard deviation (side end face deviation) of the end face for representing glass plate is flat with 4 points of bendings
The related figure of the relation between intensity P.In the coordinate diagram of Fig. 9 (a), transverse axis is the standard deviation of end face, and the longitudinal axis is 4 points of bendings
Intensity, in order to provide mean intensity ensure for more than 110Mpa intensity FPD glass plates, by standard deviation be 6.5 μm with
Under glass plate evaluation as good product, using glass plate evaluation of the standard deviation more than 6.5 μm as defective products.Need explanation
Be, as 6.5 μm of well whether threshold value of numerical value according to the species of the glass plate of nonreinforcement glass or strengthens glass etc. and
Building materials are used, vehicle with etc. the purposes of glass plate and it is different.
As the coordinate diagram of Fig. 9 (b), there is inversely proportional relation in standard deviation with the bending strength of glass plate, i.e. with
Standard deviation and become tendency big and that the bending strength of glass plate is in declining.And, standard deviation is one-to-one with bending strength
Correspondence, bending strength is the value with width with lower limit and higher limit, therefore standard deviation with lower limit it is also preferred that entered
Row management.
In detail and the present invention is illustrated with reference to specific embodiment, but without departing from the scope and spirit of the present invention
The situation that various amendments can be applied or changed is self-evident to those skilled in the art.
The Japanese patent application 2013-087341 that the application was filed an application based on April 18th, 2013, and its content is made
It is incorporated herein for reference.
【Label declaration】
The intensity management device of 10 ... glass plates, 12 ... image pickup parts, 14 ... graphics processing units, 16 ... control units, 18 ...
Glass plate test section, 20 ... glass plates, 21A, 21B, 22A, 22B ... end face, 23A ... upper surfaces, 23B ... lower surfaces, 24 ... is recessed
Sunken position, 26 ... main parts, 28,30 ... cameras, 32 ... light sources, 34 ... collimating lens, 36 ... light sources, 38 ... collimating lens,
40 ... display equipments, 42 ... computings/control unit, 44 ... intensity-conversion units, 46 ... transport rollers.
Claims (10)
1. a kind of manufacture method of glass plate, possessing the end face to glass plate carries out the grinding operation of grinding and to mill
The management operation that the intensity of the end face after processing is managed is cut, the manufacture method of the glass plate is characterised by,
The management operation possesses following operation：
Shooting operation, is shot using image unit to the end face of the glass plate；
Bump maps picture obtains operation, and image procossing is carried out to the image of the end face using graphics processing unit, obtains the end
The bump maps picture in face；
Standard deviation operational process, based on the pixel count of the image unit for constituting the bump maps picture, using arithmetic element
Carry out the standard deviation of pixel count described in computing；And
Bending strength converting process, the number related to bending strength is converted into using intensity-conversion unit by the standard deviation
According to.
2. the manufacture method of glass plate according to claim 1, wherein,
In the standard deviation operational process, for dividedly shot using the image unit and by the bump maps picture obtain
Each standard deviation of concavo-convex image operation first in multiple bump maps pictures of the end face that operation is achieved, to multiple described
First standard deviation is averaged, using equalization after the second standard deviation as the standard deviation.
3. the manufacture method of glass plate according to claim 1, wherein,
In the standard deviation operational process, for dividedly shot using the image unit and by the bump maps picture obtain
Each standard deviation of concavo-convex image operation first in multiple bump maps pictures of the end face that operation is achieved, will be multiple described
The median of the first standard deviation is used as the standard deviation.
4. the manufacture method of the glass plate according to Claims 2 or 3, wherein,
The plurality of bump maps picture is set in the way of overlapping an adjacent bump maps picture part.
5. the manufacture method of the glass plate according to Claims 2 or 3, wherein,
The plurality of bump maps picture is set with making adjacent bump maps as nonoverlapping mode.
6. the manufacture method of the glass plate according to any one of claims 1 to 3, wherein,
The glass plate be rectangular shape, for 4 sides of the glass plate end face computing described in standard deviation.
7. the manufacture method of the glass plate according to any one of claims 1 to 3, wherein,
The glass plate is glass for flat panel display plate.
8. a kind of manufacture device of glass plate, it is characterised in that
Operation according to having programmed in advance automatically carries out the manufacture method of the glass plate any one of claim 1～7
Management operation.
9. a kind of glass plate, the glass plate using the manufacture method of the glass plate any one of claim 1～7 pipe
Science and engineering sequence is checked that the glass plate is characterised by,
Mean intensity is more than 110MPa.
10. glass plate according to claim 9, wherein,
The glass plate is glass for flat panel display plate.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-087341 | 2013-04-18 | ||
| JP2013087341 | 2013-04-18 | ||
| PCT/JP2014/060289 WO2014171375A1 (en) | 2013-04-18 | 2014-04-09 | Glass plate manufacturing method, glass plate manufacturing device and glass plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105121092A CN105121092A (en) | 2015-12-02 |
| CN105121092B true CN105121092B (en) | 2017-05-03 |
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| CN201480022155.3A Active CN105121092B (en) | 2013-04-18 | 2014-04-09 | Glass plate manufacturing method, glass plate manufacturing device and glass plate |
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|---|---|
| JP (1) | JP6410215B2 (en) |
| KR (1) | KR102182871B1 (en) |
| CN (1) | CN105121092B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10613007B2 (en) | 2015-03-13 | 2020-04-07 | Corning Incorporated | Edge strength testing methods and apparatuses |
| JP7275471B2 (en) * | 2017-10-02 | 2023-05-18 | Ａｇｃ株式会社 | Transparent substrate and display device |
| JP6597858B1 (en) * | 2018-09-04 | 2019-10-30 | Ａｇｃ株式会社 | Glass for display |
| CN111080663B (en) * | 2019-12-30 | 2020-09-22 | 广西科技大学 | Bionic contour detection method based on dynamic receptive field |
| KR102453749B1 (en) * | 2020-12-22 | 2022-10-12 | 유미크론 주식회사 | Display glass substrate side surface processing equipment |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55101360A (en) * | 1979-01-19 | 1980-08-02 | Nippon Sheet Glass Co Ltd | Method of chamfering glass plate side |
| JP3595226B2 (en) * | 1999-11-25 | 2004-12-02 | 日本板硝子株式会社 | Method and apparatus for detecting edge defect in glass plate |
| JP2001261355A (en) | 2000-03-23 | 2001-09-26 | Asahi Glass Co Ltd | Method of improving strength of end face of glass substrate and glass substrate for flat panel display |
| KR100798322B1 (en) * | 2002-03-21 | 2008-01-28 | 엘지.필립스 엘시디 주식회사 | Apparatus and method for correcting grind amount of liquid crystal display panel |
| JP2004234943A (en) * | 2003-01-29 | 2004-08-19 | Denso Corp | Display device |
| JP4863168B2 (en) * | 2007-04-17 | 2012-01-25 | 日本電気硝子株式会社 | Glass substrate for flat panel display and manufacturing method thereof |
| JP2011227049A (en) | 2010-03-31 | 2011-11-10 | Asahi Glass Co Ltd | Method for inspecting end face of light-transmitting rectangular plate and apparatus for inspecting the end face |
| KR20110110041A (en) * | 2010-03-31 | 2011-10-06 | 아사히 가라스 가부시키가이샤 | Method and device for inspecting the end face of the light transmitting rectangular plate-like object |
| WO2012005019A1 (en) * | 2010-07-08 | 2012-01-12 | 旭硝子株式会社 | Glass substrate end surface evaluation method, glass substrate end surface processing method, and glass substrate |
| JP5682819B2 (en) * | 2011-03-08 | 2015-03-11 | 旭硝子株式会社 | Glass plate chamfering method, chamfering apparatus and glass plate |
| WO2012153718A1 (en) * | 2011-05-12 | 2012-11-15 | コニカミノルタホールディングス株式会社 | Method for testing end face of glass sheet and device for testing end face of glass sheet |
| JP5987829B2 (en) * | 2011-07-20 | 2016-09-07 | 旭硝子株式会社 | Sheet glass manufacturing method and apparatus for manufacturing the same |
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2014
- 2014-04-09 WO PCT/JP2014/060289 patent/WO2014171375A1/en active Application Filing
- 2014-04-09 CN CN201480022155.3A patent/CN105121092B/en active Active
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| KR102182871B1 (en) | 2020-11-25 |
| CN105121092A (en) | 2015-12-02 |
| JPWO2014171375A1 (en) | 2017-02-23 |
| WO2014171375A1 (en) | 2014-10-23 |
| KR20150143493A (en) | 2015-12-23 |
| JP6410215B2 (en) | 2018-10-24 |
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