CN108225204A - A kind of on-line measurement glass plate warping apparatus and method - Google Patents
A kind of on-line measurement glass plate warping apparatus and method Download PDFInfo
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- CN108225204A CN108225204A CN201711242525.6A CN201711242525A CN108225204A CN 108225204 A CN108225204 A CN 108225204A CN 201711242525 A CN201711242525 A CN 201711242525A CN 108225204 A CN108225204 A CN 108225204A
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- glass plate
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
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- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a kind of on-line measurement glass plate warping apparatus and methods,By setting the check board parallel with glass plate to be measured below overflow molding machine,In glass plate opposite side to be measured setting perpendicular to the imaging device of check board,When glass pane surface flatness is deteriorated,The image that check board is reflected by glass plate can be because the variation of glass pane surface flatness causes light extent of refraction to change,So as to the variation that is distorted,Grid lines in check board image can become distortion and the spacing of grid can also change,So it can confirm the warped state of glass plate by monitoring the variation of check board image on a glass on-line,Then represent that glass slab warping is improving when scalloping variation reduces even constant,Then represent that glass slab warping is deteriorating when scalloping becomes larger,So as to fulfill the function of real-time online detection glass plate warped state,So as to accomplish the warped state of every glass plate of real time on-line monitoring,The consistency of product quality is ensured completely.
Description
Technical field
The invention belongs to glass substrate manufacturing field, be related to it is a kind of using check board device in glass sheet making process
Line measures glass slab warping, and in particular to a kind of on-line measurement glass plate warping apparatus and method.
Background technology
Glass plate (thickness is between 0.3mm~1.4mm) refers mainly to the base plate glass for flat panel display, it is flat
One of critical component of plate display.For many display equipments, the surface smoothness of glass used is necessary in panel
Within 150 microns, any warped shapes fluctuation in glass can all adversely affect the quality of display.
Include one layer of liquid crystal material being connected with glass substrate and transistor (TFT), the crystal in a lcd display
Pipe is arranged by the array of certain pattern, and liquid crystal molecule is made to be orientated by required form；Therefore times of glass substrate shape (i.e. warpage)
What variation can all lead to the variation of spacing between transistor and pixel, can directly influence the electric field and pixel of display in this way,
The defects of gray scale and the color for making display are uneven, generation bright spot.Therefore in LCD and the application of other glass displays, provide
Glass substrate in the range of acceptable warpage is very useful.
The method of general detection warpage is to extract the glass plate of flowing water in the production line to be placed on platform and set using special
Standby detection glass plate warpage degree, although this method measures accurately, has limitation, can only be inspected by random samples, can not detected
Every glass plate, and detection time is long, can not accomplish the warped state of every glass plate of real time on-line monitoring, influences warpage countermeasure
Efficiency and the consistency that can not ensure product quality completely.
Invention content
The purpose of the present invention is to provide a kind of on-line measurement glass plate warping apparatus and method, to overcome the prior art
It is insufficient.
In order to achieve the above objectives, the present invention adopts the following technical scheme that：
A kind of on-line measurement glass plate warping apparatus, including overflow device, device for shaping glass, carry-over pinch rolls and imaging dress
It puts, device for shaping glass is set to overflow device overflow port lower end, and carry-over pinch rolls are set to device for shaping glass lower end, under carry-over pinch rolls
End is equipped with glass cutting machine, and check board is equipped between carry-over pinch rolls and glass cutting machine, and check board is arranged in parallel with formed glass, into
As device is vertically installed in check board side, formed glass is placed between check board and imaging device.
Further, grid line is evenly equipped on check board, distance is fixed between two neighboring grid line.
Further, check board side is equipped with graduation mark.
Further, it is coated with background color on check board, the background color on check board is different from grid line color.
Further, the background color of check board and grid line color are different from glass plate color to be measured, and have it is apparent right
Degree of ratio.
Further, wherein imaging device is high-definition camera.
Further, distance is less than 2cm between check board and glass plate to be measured.
Further, the grid line on check board is spontaneous light.
A kind of glass plate angularity On-line Measuring Method, includes the following steps：
The check board parallel with glass board assembly line to be measured is set between carry-over pinch rolls and glass cutting machine, while to be measured
Glass board assembly line opposite side sets imaging device, and imaging device is made to be set perpendicular to check board, difference is coated on check board
In the color of glass plate, while the grid line on check board is made to be different from check board color, utilize the imaging device side of monitoring in real time
Imaging in panel, you can complete the measurement of glass plate warpage degree.
Compared with prior art, the present invention has technique effect beneficial below：
A kind of on-line measurement glass plate warping apparatus of the present invention and method, by setting and treating below overflow molding machine
The parallel check board of glass plate is surveyed, in glass plate opposite side to be measured setting perpendicular to the imaging device of check board, passes through glass plate
Light reflection after image, glass pane surface flatness is exactly the warpage degree of glass plate, when glass pane surface flatness be deteriorated,
The image that check board is reflected by glass plate can be because the variation of glass pane surface flatness causes light extent of refraction to become
Change, so as to the variation that is distorted, the grid lines in check board image can become distortion and the spacing of grid can also change,
So the warped state of glass plate can be confirmed by monitoring the variation of check board image on a glass on-line, when scalloping becomes
Change and then represent that glass slab warping is improving when reducing even constant, then represent that glass slab warping exists when scalloping becomes larger
Deteriorate, so as to fulfill the function of real-time online detection glass plate warped state, so as to accomplish every glass plate of real time on-line monitoring
Warped state, ensure the consistency of product quality completely.
Further, the grid line on check board is spontaneous light, is specifically LED pipe line, effectively improves contrast, make
Check board background color and the comparison of grid luminescent color are apparent.
Further, the grid drawn on check board is of the same size, and scale, and the party are equipped in fixed position
Panel background and the color contrast of grid are apparent, therefore grid images distortion variation degree can be according to the comparison with scale on glass plate
It measures and, so as to fulfill the function of on-line measurement warpage.
Description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is Fig. 1 left views.
Fig. 3 is the refraction diagram of light on a glass.
Fig. 4 is image map of the grid images on the larger glass plate of warpage.
Wherein, 1, overflow device；2nd, device for shaping glass；3rd, carry-over pinch rolls；4th, check board；5th, glass cutting machine.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings：
As shown in Figure 1 and Figure 2, a kind of on-line measurement glass plate warping apparatus, including overflow device 1, device for shaping glass 2,
Carry-over pinch rolls 3 and imaging device 6, device for shaping glass 2 are set to 1 overflow port lower end of overflow device, carry-over pinch rolls 3 be set to glass into
2 lower end of type device, 3 lower end of carry-over pinch rolls are equipped with glass cutting machine 5, and check board 4, side are equipped between carry-over pinch rolls 3 and glass cutting machine 5
Panel 4 is arranged in parallel with formed glass, and imaging device 6 is vertically installed in 4 side of check board, formed glass be placed in check board 4 with
Between imaging device 6；Grid line is evenly equipped on check board 4；
Distance is fixed between two neighboring grid line, and 4 side of check board is equipped with graduation mark；
It is coated with background color on check board 4, the background color on check board 4 is different from grid line color；
The background color and grid line color of check board 4 are different from glass plate color to be measured, and have apparent contrast,
Wherein imaging device is high-definition camera；
Distance is less than 2cm between check board 4 and glass plate to be measured.
Grid line on check board 4 is spontaneous light, is specifically LED pipe line, effectively improves contrast, make check board bottom
Color and the comparison of grid luminescent color are apparent.
A kind of on-line measurement glass plate angularity method, includes the following steps：
The check board parallel with glass board assembly line to be measured is set between carry-over pinch rolls and glass cutting machine, while to be measured
Glass board assembly line opposite side sets imaging device, and imaging device is made to be set perpendicular to check board, difference is coated on check board
In the color of glass plate, while the grid line on check board is made to be different from check board color, utilize the imaging device side of monitoring in real time
Imaging in panel, you can complete the measurement of glass plate warpage degree.The present invention is a kind of to use overflow down draw technique productions tablet
The device and its detection method of on-line measurement glass slab warping in the production process of glass, between carry-over pinch rolls and glass cutting machine
The setting check board parallel with glass board assembly line to be measured, grid graph is apparent with background color comparison on check board and indicates quarter
Degree, effect are according to the variation of grid graph reflection to image on glass plate, to show the warped state of glass plate, check board
On grid be of the same size, pass through reflection to the variation size of grid image degreeof tortuosity on glass plate with identify quarter
Degree compares, and can show the degree of glass slab warping, make it have the function of on-line measurement glass slab warping, so as to improve
The efficiency of countermeasure glass slab warping promotes yields.
As shown in figure 3, the refraction diagram of light on a glass, as shown in figure 4, larger to occur warpage in detection process
Glass plate on image map, grid graph is on a glass in detection process, on human eye or monitor detection check board
Image, when glass plate constantly flows down, with the variation of glass plate warped state difference occurs for the image of grid on a glass
The variation of degreeof tortuosity；When wherein glass slab warping is poor, the image distortion degree of grid on a glass is also larger, glass plate
Warpage becomes hour, and the image degreeof tortuosity of fluorescent tube can also become smaller therewith.
Claims (9)
1. a kind of on-line measurement glass plate warping apparatus, which is characterized in that including overflow device (1), device for shaping glass (2),
Carry-over pinch rolls (3) and imaging device, device for shaping glass (2) are set to overflow device (1) overflow port lower end, carry-over pinch rolls (3) setting
In device for shaping glass (2) lower end, carry-over pinch rolls (3) lower end is equipped with glass cutting machine (5), carry-over pinch rolls (3) and glass cutting machine (5)
Between be equipped with check board (4), check board (4) is arranged in parallel with formed glass, and imaging device is vertically installed in check board (4) one
Side, formed glass are placed in check board (4) between imaging device.
2. a kind of on-line measurement glass plate warping apparatus according to claim 1, which is characterized in that on check board (4)
Grid line is furnished with, distance is fixed between two neighboring grid line.
A kind of 3. on-line measurement glass plate warping apparatus according to claim 2, which is characterized in that check board (4) side
Equipped with graduation mark.
4. a kind of on-line measurement glass plate warping apparatus according to claim 1, which is characterized in that check board applies on (4)
There is a background color, the background color on check board (4) is different from grid line color.
A kind of 5. on-line measurement glass plate warping apparatus according to claim 4, which is characterized in that the bottom of check board (4)
Color and grid line color are different from glass plate color to be measured, and have apparent contrast.
6. a kind of on-line measurement glass plate warping apparatus according to claim 1, which is characterized in that wherein imaging device is
High-definition camera.
7. a kind of on-line measurement glass plate warping apparatus according to claim 1, which is characterized in that check board (4) is with treating
Distance is less than 2cm between surveying glass plate.
8. a kind of on-line measurement glass plate warping apparatus according to claim 1, which is characterized in that on check board (4)
Grid line is spontaneous light.
9. a kind of glass plate angularity On-line Measuring Method based on on-line measurement glass plate warping apparatus described in claim 1,
It is characterized by comprising the following steps：
The check board parallel with glass board assembly line to be measured is set between carry-over pinch rolls and glass cutting machine, while in glass to be measured
Board assembly line opposite side sets imaging device, and imaging device is made to be set perpendicular to check board, is coated on check board and is different from glass
The color of glass plate, while the grid line on check board is made to be different from check board color, check board is monitored in real time using imaging device
On imaging, you can complete glass plate warpage degree measurement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711242525.6A CN108225204A (en) | 2017-11-30 | 2017-11-30 | A kind of on-line measurement glass plate warping apparatus and method |
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| CN201711242525.6A CN108225204A (en) | 2017-11-30 | 2017-11-30 | A kind of on-line measurement glass plate warping apparatus and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109631784A (en) * | 2018-11-27 | 2019-04-16 | 彩虹（合肥）液晶玻璃有限公司 | Glass substrate detection system and method |
| CN109631785A (en) * | 2018-12-12 | 2019-04-16 | 彩虹（合肥）液晶玻璃有限公司 | A kind of glass substrate measuring device and measuring method |
| CN109946001A (en) * | 2019-02-19 | 2019-06-28 | 彩虹（合肥）液晶玻璃有限公司 | Glass substrate stress category detection method, device and electronic equipment |
| CN112592032A (en) * | 2020-12-16 | 2021-04-02 | 成都中光电科技有限公司 | Method and device for monitoring bow of glass substrate during liquid crystal glass forming |
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| CN102519377A (en) * | 2011-11-04 | 2012-06-27 | 彩虹（合肥）液晶玻璃有限公司 | Device for on-line detection of glass pane warpage and method thereof |
| CN202494433U (en) * | 2011-12-07 | 2012-10-17 | 郑州旭飞光电科技有限公司 | TFT-LCD liquid crystal glass substrate warp detection device |
| CN103697830A (en) * | 2014-01-07 | 2014-04-02 | 苏州精创光学仪器有限公司 | Integral system for measuring warpage and surface stress of protection glass of touch screen |
| CN106091997A (en) * | 2016-06-01 | 2016-11-09 | 广州视睿电子科技有限公司 | Method, device and system for testing glass performance |
| CN106767571A (en) * | 2016-12-30 | 2017-05-31 | 陕西彩虹电子玻璃有限公司 | A kind of method of cover-plate glass warpage on-line checking |
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2017
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102519377A (en) * | 2011-11-04 | 2012-06-27 | 彩虹（合肥）液晶玻璃有限公司 | Device for on-line detection of glass pane warpage and method thereof |
| CN202494433U (en) * | 2011-12-07 | 2012-10-17 | 郑州旭飞光电科技有限公司 | TFT-LCD liquid crystal glass substrate warp detection device |
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| CN106767571A (en) * | 2016-12-30 | 2017-05-31 | 陕西彩虹电子玻璃有限公司 | A kind of method of cover-plate glass warpage on-line checking |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109631784A (en) * | 2018-11-27 | 2019-04-16 | 彩虹（合肥）液晶玻璃有限公司 | Glass substrate detection system and method |
| CN109631785A (en) * | 2018-12-12 | 2019-04-16 | 彩虹（合肥）液晶玻璃有限公司 | A kind of glass substrate measuring device and measuring method |
| CN109946001A (en) * | 2019-02-19 | 2019-06-28 | 彩虹（合肥）液晶玻璃有限公司 | Glass substrate stress category detection method, device and electronic equipment |
| CN112592032A (en) * | 2020-12-16 | 2021-04-02 | 成都中光电科技有限公司 | Method and device for monitoring bow of glass substrate during liquid crystal glass forming |
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Application publication date: 20180629 |