CN115326813B - Visual detection method and device used for mobile phone 3D curved surface glass cover plate after pad printing - Google Patents
Visual detection method and device used for mobile phone 3D curved surface glass cover plate after pad printing Download PDFInfo
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- CN115326813B CN115326813B CN202211078998.8A CN202211078998A CN115326813B CN 115326813 B CN115326813 B CN 115326813B CN 202211078998 A CN202211078998 A CN 202211078998A CN 115326813 B CN115326813 B CN 115326813B
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- 239000011521 glass Substances 0.000 title claims abstract description 110
- 238000001514 detection method Methods 0.000 title claims abstract description 50
- 230000000007 visual effect Effects 0.000 title claims abstract description 20
- 238000007649 pad printing Methods 0.000 title claims abstract description 12
- 238000011179 visual inspection Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 11
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 239000005357 flat glass Substances 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000009776 industrial production Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000007639 printing Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
- YTCQFLFGFXZUSN-BAQGIRSFSA-N microline Chemical compound OC12OC3(C)COC2(O)C(C(/Cl)=C/C)=CC(=O)C21C3C2 YTCQFLFGFXZUSN-BAQGIRSFSA-N 0.000 description 1
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- G—PHYSICS
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- 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
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
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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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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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
- G01N21/8806—Specially adapted optical and illumination features
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
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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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N2021/0106—General arrangement of respective parts
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Abstract
The invention discloses a visual detection method and a visual detection device after pad printing of a 3D curved glass cover plate of a mobile phone, wherein the visual detection method comprises the steps of visually detecting an arc surface on the back of the curved glass cover plate and visually detecting the positions of the top side and the bottom side of the curved glass cover plate; meanwhile, the visual detection device is used for detecting the appearance quality of the mobile phone 3D curved surface cover plate glass, and can be matched with the visual detection method to select the mobile phone 3D curved surface cover plate glass which does not meet the specification standard after pad printing, so that zero omission detection is realized; the rejection of qualified products as unqualified products is reduced, and the misjudgment rate is reduced; meanwhile, the device automatically operates to replace manual work, so that the detection accuracy is improved, the production efficiency of a factory is improved, and the full-automatic contribution to industrial production is realized.
Description
Technical Field
The invention relates to the field of visual detection of products, in particular to a visual detection method and device after pad printing for a mobile phone 3D curved glass cover plate.
Background
The 3D curved surface glass cover plate for the mobile phone needs to be visually detected in the production and manufacturing process, and the appearance quality of the 3D curved surface glass cover plate is mainly detected, wherein the appearance quality comprises whether peripheral edge breakage, kong Beng edges and poor edge grinding occur to a product; whether the outline edge of the product BM has a bright edge or not; whether white edges exist at the boundary between the VA region and the BM region of the product; whether the BM area of the product has printing foreign matters, printing smudges, sand holes, tooth gaps, edge penetration and ink overflow; whether the product has the phenomenon of color difference of ink or not; whether the product has a printing missing phenomenon or not; whether the VA area of the product has ink black spots or not; whether the BM area of the product has a printing black line and ink bulge phenomenon; in the aspects of whether foreign matters, deformation, tooth defects, ink heterochromatic phenomena and the like exist in an IR hole of a product, due to the special structural design of the 3D curved glass cover plate, multiple areas of the product cannot be displayed under the same camera due to the curved surface structure, so that the traditional visual detection equipment can have the conditions of missing detection, false detection and the like during detection, the detection efficiency is extremely low, and the production quality and the production process of the product are influenced.
Disclosure of Invention
In order to overcome the defects, the invention aims to provide a visual inspection method and a visual inspection device after pad printing for a 3D curved glass cover plate of a mobile phone, so that the technical problems of missed inspection, false inspection and low inspection efficiency caused by incapability of displaying multiple areas of a product under the same camera due to the curved surface structure when the traditional visual inspection device is used for inspecting the 3D curved glass cover plate are effectively solved.
In order to achieve the above purpose, the invention adopts the following technical scheme: a visual inspection method after pad printing for a mobile phone 3D curved glass cover plate comprises the following steps:
Visual detection is carried out on the cambered surface at the back of the curved glass cover plate:
Selecting a first light source, a second light source, a third light source, a fourth light source, a fifth light source, a sixth light source, a seventh light source and an eighth light source, arranging the second light source below the first light source, arranging the third light source and the fourth light source on the central line of the first light source, arranging the fifth light source, the sixth light source, the seventh light source and the eighth light source on the left side and the right side of the bottom of the first light source respectively, and arranging the fifth light source, the sixth light source, the seventh light source and the eighth light source on the left side and the right side of the second light source respectively;
placing a curved glass cover plate to be detected below the first light source and above the second light source;
Placing a camera for shooting a product above the first light source, wherein a lens of the camera is vertically downward and aligned with a curved glass cover plate to be detected, which is positioned below the first light source, and meanwhile, the lens of the camera is positioned on a central line of the first light source;
the position of a curved glass cover plate to be detected is regulated, one side cambered surface of the back of the curved glass cover plate is arranged on the central line of the first light source, and a camera photographs and detects the one side cambered surface of the back of the curved glass cover plate;
the position of the curved glass cover plate to be detected is adjusted again, the cambered surface on the other side of the back of the curved glass cover plate is arranged on the central line of the first light source, and the camera photographs and detects the cambered surface on the other side of the back of the curved glass cover plate;
visual inspection is carried out on the top side and the bottom side of the curved glass cover plate:
Selecting a ninth light source, a tenth light source, an eleventh light source, a twelfth light source, a thirteenth light source and a fourteenth light source; placing the tenth light source below the ninth light source, wherein the tenth light source is arranged on the central line of the ninth light source, placing the eleventh light source and the twelfth light source on the left side and the right side of the ninth light source respectively, placing the thirteenth light source on one side of the tenth light source and being arranged in parallel with the tenth light source, and placing the fourteenth light source below the ninth light source;
Placing a curved glass cover plate to be detected below the ninth light source and above the tenth light source;
A reflector is arranged below the curved glass cover plate to be detected, and meanwhile, light rays generated by the fourteenth light source are reflected to the curved glass cover plate to be detected through the reflector;
placing a camera for shooting a product above the ninth light source, wherein a lens of the camera is vertically downward and aligned with a curved glass cover plate to be detected below the ninth light source, and the lens of the camera is positioned on a central line of the first light source;
adjusting the position of a curved glass cover plate to be detected, placing the top side part of the curved glass cover plate on the central line of the ninth light source, enabling light rays generated by a fourteenth light source reflected by the reflecting mirror to irradiate the top side part of the curved glass cover plate, and photographing and detecting the top side part of the curved glass cover plate by a camera;
And adjusting the position of the curved glass cover plate to be detected, placing the ground side part of the curved glass cover plate on the central line of the ninth light source, enabling light rays generated by the fourteenth light source reflected by the reflecting mirror to irradiate the ground side part of the curved glass cover plate, and photographing and detecting the ground side part of the curved glass cover plate by the camera.
Further, the first light source is an arched shadowless light source, the second light source is a high-uniformity strip light source, and the third light source, the fourth light source, the fifth light source, the sixth light source, the seventh light source and the eighth light source are all high-brightness strip light sources.
Further, the ninth light source is a coaxial light source, the tenth light source is a high-uniformity strip light source, the eleventh light source, the twelfth light source and the thirteenth light source are high-brightness strip light sources, and the fourteenth light source is a miniature line scanning light source.
Further, the third light source and the fourth light source are respectively attached to the bottom edges of the left side and the right side of the arch of the first light source, and are inclined downwards by 15 degrees.
Further, the heights and light emitting surfaces of the fifth, sixth, seventh and eighth light sources are parallel to the second light source, and the fifth, sixth, seventh and eighth light sources are inclined by 35 ° toward the middle second light source.
Further, the eleventh light source and the twelfth light source are arranged bilaterally symmetrically with respect to a center line of the ninth light source, and both the eleventh light source and the twelfth light source are inclined at 45 °.
Further, when the camera shoots a cambered surface on one side of the back of the curved glass cover plate, shooting three times to obtain three photos; and when the camera shoots the cambered surface on the other side of the back of the curved glass cover plate, shooting three times to obtain three photos.
Further, when the camera shoots the top side part of the curved glass cover plate, shooting twice to obtain two photos; when the camera shoots the ground side part of the curved glass cover plate, the camera shoots twice, and two photos are obtained.
The utility model provides a visual inspection device after being used for mobile phone 3D curved surface glass apron pad printing, including adopting the detection device that above-mentioned visual inspection method after being used for mobile phone 3D curved surface glass apron pad printing, detection device includes:
The first detection mechanism is used for detecting the cambered surface at the back of the curved glass cover plate and comprises a first light source, a second light source, a third light source, a fourth light source, a fifth light source, a sixth light source, a seventh light source, an eighth light source and a first camera; the first light source is positioned above the second light source, the central lines of the first light source and the second light source are overlapped, the third light source and the fourth light source are respectively positioned at the left side and the right side of the bottom of the first light source, and the fifth light source, the sixth light source, the seventh light source and the eighth light source are respectively positioned at the left side and the right side of the second light source in a two-by-two mode; the first camera is positioned above the first light source, and the lens of the first camera is positioned on the central line of the first light source;
the second detection mechanism is used for detecting the top side and the bottom side of the curved glass cover plate; comprises a ninth light source, a tenth light source, an eleventh light source, a twelfth light source, a thirteenth light source, a fourteenth light source, a reflector and a second camera; the ninth light source is positioned above the tenth light source, and the center lines of the ninth light source and the tenth light source are coincident; the eleventh light source and the twelfth light source are respectively positioned at the left side and the right side of the ninth light source and are symmetrically arranged, the thirteenth light source is positioned at one side of the tenth light source and is arranged in parallel with the tenth light source, the fourteenth light source is positioned below the ninth light source, the reflector and the fourteenth light source are correspondingly arranged, the second camera is positioned above the ninth light source, and the lens of the second camera is positioned on the central line of the ninth light source.
The beneficial effects of the invention are as follows: the visual detection method disclosed by the invention comprises the steps of visually detecting the cambered surface on the back of the curved glass cover plate and visually detecting the top side and the bottom side of the curved glass cover plate; meanwhile, the device is also used for detecting the appearance quality of the mobile phone 3D curved surface cover plate glass, and can select the mobile phone 3D curved surface cover plate glass which does not meet the specification standard after pad printing by matching with the visual detection method, so that zero omission detection is realized; the rejection of qualified products as unqualified products is reduced, and the misjudgment rate is reduced; meanwhile, the device automatically operates to replace manual work, so that the detection accuracy is improved, the production efficiency of a factory is improved, and the full-automatic contribution to industrial production is realized.
Drawings
FIG. 1 is a schematic diagram of detecting an arc surface on one side of the back of a curved glass cover plate by using a first detection device.
Fig. 2 is a schematic diagram of detecting an arc surface on the other side of the back of the curved glass cover plate by using a first detection device.
Fig. 3 is a schematic diagram of the detection of the antenna side of the curved glass cover plate by using the second detection device.
FIG. 4 is a schematic view of the detection of the ground side portion of a curved glass cover plate by using a second detection device.
Fig. 5 is a graph showing a distribution diagram of shooting positions of a cambered surface camera on one side of a curved glass cover plate.
Fig. 6 is a graph showing the distribution of the shooting positions of the cambered surface cameras on the other side of the curved glass cover plate.
Fig. 7 is a diagram showing a distribution of photographing positions of a camera on the antenna side of a curved glass cover plate.
Fig. 8 is a diagram showing a map of the photographing position of the camera at the ground side of the curved glass cover plate.
In the figure: 1. a first light source; 2. a second light source; 3. a third light source; 4. a fourth light source; 5. a fifth light source; 6. a sixth light source; 7. a seventh light source; 8. an eighth light source; 9. a ninth light source; 10. a tenth light source; 11. an eleventh light source; 12. a twelfth light source; 13. a thirteenth light source; 14. a fourteenth light source; 15. a reflective mirror; 16. a first camera; 17. a second camera; 18. a curved glass cover plate.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present invention.
The embodiment of the invention provides a visual detection method for a 3D curved glass cover plate of a mobile phone after pad printing, which comprises two steps of respectively performing visual detection on the cambered surface of the back of the curved glass cover plate and performing visual detection on the top side and the bottom side of the curved glass cover plate;
the first step: when the cambered surface of curved glass apron back carries out visual detection:
S1, selecting a first light source, a second light source, a third light source, a fourth light source, a fifth light source, a sixth light source, a seventh light source and an eighth light source, arranging the second light source below the first light source, arranging the third light source and the fourth light source on the left side and the right side of the bottom of the first light source respectively and attached to the bottom edges of the two arched sides of the first light source, and arranging the fifth light source, the sixth light source, the seventh light source and the eighth light source on the left side and the right side of the second light source respectively by inclining downwards by 15 degrees, wherein the heights and luminous surfaces of the fifth light source, the sixth light source, the seventh light source and the eighth light source are parallel to those of the second light source, and the fifth light source, the sixth light source, the seventh light source and the eighth light source incline by 35 degrees towards the middle second light source; in all the above light sources, the first light source is an arched shadowless light source, the second light source is a high-uniformity bar-shaped light source, and the third light source, the fourth light source, the fifth light source, the sixth light source, the seventh light source and the eighth light source are high-brightness bar-shaped light sources.
S2: placing a curved glass cover plate to be detected below the first light source and above the second light source;
S3: placing a camera for shooting a product above the first light source, wherein a lens of the camera is vertically downward and aligned with a curved glass cover plate to be detected, which is positioned below the first light source, and meanwhile, the lens of the camera is positioned on a central line of the first light source;
s4: as shown in fig. 1, the position of the curved glass cover plate to be detected is adjusted, a cambered surface on one side of the back of the curved glass cover plate is arranged on the central line of the first light source, a camera photographs and detects the cambered surface on one side of the back of the curved glass cover plate, three photographs are photographed three times, and the photographed positions are shown as a dotted line frame in fig. 5.
S5: as shown in fig. 2, the position of the curved glass cover plate to be detected is adjusted again, the cambered surface on the other side of the back of the curved glass cover plate is placed on the central line of the first light source, and the camera performs photographing detection on the cambered surface on the other side of the back of the curved glass cover plate; three photographs were taken three times, and the photographed positions are shown as a dashed box in fig. 6.
And a second step of: when the cambered surface of curved glass apron back carries out visual detection:
S1, selecting a ninth light source, a tenth light source, an eleventh light source, a twelfth light source, a thirteenth light source and a fourteenth light source; the tenth light source is arranged below the ninth light source, the tenth light source is arranged on the central line of the ninth light source, the eleventh light source and the twelfth light source are respectively arranged on the left side and the right side of the ninth light source and are symmetrically arranged on the left side and the right side with the central line of the ninth light source as a reference, and the eleventh light source and the twelfth light source are inclined by 45 degrees; placing the thirteenth light source on one side of the tenth light source and arranging the thirteenth light source in parallel with the tenth light source, and placing the fourteenth light source below the ninth light source; in all the above light sources, the ninth light source is a coaxial light source, the tenth light source is a high uniform bar light source, the eleventh light source, the twelfth light source, and the thirteenth light source are high brightness bar light sources, and the fourteenth light source is a micro line scanning light source.
S2: placing a curved glass cover plate to be detected below the ninth light source and above the tenth light source;
s3: a reflector is arranged below the curved glass cover plate to be detected, and meanwhile, light rays generated by the fourteenth light source are reflected to the curved glass cover plate to be detected through the reflector;
S4: placing a camera for shooting a product above the ninth light source, wherein a lens of the camera is vertically downward and aligned with a curved glass cover plate to be detected below the ninth light source, and the lens of the camera is positioned on a central line of the first light source;
s5: as shown in fig. 3, the position of the curved glass cover plate to be detected is adjusted, the top side part of the curved glass cover plate is arranged on the central line of the ninth light source, meanwhile, the light generated by the fourteenth light source reflected by the reflector irradiates the top side part of the curved glass cover plate, and the camera photographs and detects the top side part of the curved glass cover plate, photographs are taken twice, and two photographs are obtained; the photographed region is shown in dashed outline in fig. 7.
S6: as shown in fig. 4, the position of the curved glass cover plate to be detected is adjusted, the ground side part of the curved glass cover plate is arranged on the central line of the ninth light source, meanwhile, the light generated by the fourteenth light source reflected by the reflector irradiates the ground side part of the curved glass cover plate, and the camera photographs and detects the ground side part of the curved glass cover plate, photographs are taken twice, and two photographs are obtained; the photographed region is shown in dashed outline in fig. 8.
Another embodiment of the present invention provides a post-pad visual inspection device for a mobile phone 3D curved glass cover plate, including a detection device adopting the post-pad visual inspection method for a mobile phone 3D curved glass cover plate, where the detection device includes: the first detection mechanism is used for detecting the cambered surface at the back of the curved glass cover plate and comprises a first light source, a second light source, a third light source, a fourth light source, a fifth light source, a sixth light source, a seventh light source, an eighth light source and a first camera; the first light source is positioned above the second light source, the central lines of the first light source and the second light source are overlapped, the third light source and the fourth light source are respectively positioned at the left side and the right side of the bottom of the first light source, and the fifth light source, the sixth light source, the seventh light source and the eighth light source are respectively positioned at the left side and the right side of the second light source in a two-by-two mode; the first camera is positioned above the first light source, and the lens of the first camera is positioned on the central line of the first light source; the second detection mechanism is used for detecting the top side and the bottom side of the curved glass cover plate; comprises a ninth light source, a tenth light source, an eleventh light source, a twelfth light source, a thirteenth light source, a fourteenth light source, a reflector and a second camera; the ninth light source is positioned above the tenth light source, and the center lines of the ninth light source and the tenth light source are coincident; the eleventh light source and the twelfth light source are respectively positioned at the left side and the right side of the ninth light source and are symmetrically arranged, the thirteenth light source is positioned at one side of the tenth light source and is arranged in parallel with the tenth light source, the fourteenth light source is positioned below the ninth light source, the reflector and the fourteenth light source are correspondingly arranged, the second camera is positioned above the ninth light source, and the lens of the second camera is positioned on the central line of the ninth light source.
Because the structure of the 3D curved surface cover plate glass curved surface enables a plurality of areas of a product not to be displayed under the same camera, according to the optical characteristics, the optical system comprises a plurality of light sources which are assembled at different angles according to a light-emitting route to alternately emit light; when detecting the arc edge of the curved surface of the 3D curved surface cover plate glass, the camera acquires 3 images, so that all areas of the arc edge of the 3D curved surface cover plate glass can be displayed in one camera, in the detection process, the product is adjusted to a lower position, the arc edge is switched, and all arc edge areas of the 3D curved surface cover plate glass can be acquired, cameras with different angles are not required to be erected at different positions for acquisition and detection, and the erection space, the detection efficiency and the cost are improved to a great extent; when detecting the top and bottom sides of the 3D curved cover plate glass, the same curved structure can not enable a plurality of areas of the product to be displayed under the same camera, and the chamfering reason is different from the long arc side, so that the top and bottom sides of the curved cover plate glass comprise 6 light sources which are assembled at different angles according to a light emitting route and are matched with reflecting mirrors to emit light alternately, and when detecting the top and bottom sides, 2 images are respectively collected by the camera, so that all the areas of the top side of the 3D curved cover plate glass can be displayed in one angle camera, and all the areas can be displayed in one angle camera.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and to implement the same, but are not intended to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (4)
1. A visual inspection method used after pad printing of a mobile phone 3D curved glass cover plate is characterized in that: the method comprises the following steps:
Visual detection is carried out on the cambered surface at the back of the curved glass cover plate:
Selecting a first light source, a second light source, a third light source, a fourth light source, a fifth light source, a sixth light source, a seventh light source and an eighth light source, arranging the second light source below the first light source, arranging the third light source and the fourth light source on the central line of the first light source, arranging the fifth light source, the sixth light source, the seventh light source and the eighth light source on the left side and the right side of the bottom of the first light source respectively, and arranging the fifth light source, the sixth light source, the seventh light source and the eighth light source on the left side and the right side of the second light source respectively;
placing a curved glass cover plate to be detected below the first light source and above the second light source;
Placing a camera for shooting a product above the first light source, wherein a lens of the camera is vertically downward and aligned with a curved glass cover plate to be detected, which is positioned below the first light source, and meanwhile, the lens of the camera is positioned on a central line of the first light source;
the position of a curved glass cover plate to be detected is regulated, one side cambered surface of the back of the curved glass cover plate is arranged on the central line of the first light source, and a camera photographs and detects the one side cambered surface of the back of the curved glass cover plate;
the position of the curved glass cover plate to be detected is adjusted again, the cambered surface on the other side of the back of the curved glass cover plate is arranged on the central line of the first light source, and the camera photographs and detects the cambered surface on the other side of the back of the curved glass cover plate;
visual inspection is carried out on the top side and the bottom side of the curved glass cover plate:
Selecting a ninth light source, a tenth light source, an eleventh light source, a twelfth light source, a thirteenth light source and a fourteenth light source; placing the tenth light source below the ninth light source, wherein the tenth light source is arranged on the central line of the ninth light source, placing the eleventh light source and the twelfth light source on the left side and the right side of the ninth light source respectively, placing the thirteenth light source on one side of the tenth light source and being arranged in parallel with the tenth light source, and placing the fourteenth light source below the ninth light source;
Placing a curved glass cover plate to be detected below the ninth light source and above the tenth light source;
A reflector is arranged below the curved glass cover plate to be detected, and meanwhile, light rays generated by the fourteenth light source are reflected to the curved glass cover plate to be detected through the reflector;
placing a camera for shooting a product above the ninth light source, wherein a lens of the camera is vertically downward and aligned with a curved glass cover plate to be detected below the ninth light source, and the lens of the camera is positioned on a central line of the first light source;
adjusting the position of a curved glass cover plate to be detected, placing the top side part of the curved glass cover plate on the central line of the ninth light source, enabling light rays generated by a fourteenth light source reflected by the reflecting mirror to irradiate the top side part of the curved glass cover plate, and photographing and detecting the top side part of the curved glass cover plate by a camera;
The first light source is an arched shadowless light source, the second light source is a high-uniformity strip light source, the third light source, the fourth light source, the fifth light source, the sixth light source, the seventh light source and the eighth light source are all high-brightness strip light sources,
The ninth light source is a coaxial light source, the tenth light source is a high-uniformity strip light source, the eleventh light source, the twelfth light source and the thirteenth light source are high-brightness strip light sources, the fourteenth light source is a miniature line scanning light source,
The third light source and the fourth light source are respectively stuck to the bottom edges of the left side and the right side of the arch of the first light source and are inclined downwards by 15 degrees,
The heights and the light emitting surfaces of the fifth light source, the sixth light source, the seventh light source and the eighth light source are parallel to the second light source, and the fifth light source, the sixth light source, the seventh light source and the eighth light source are inclined by 35 degrees to the direction of the middle second light source,
The eleventh light source and the twelfth light source are arranged bilaterally symmetrically with respect to a center line of the ninth light source, and both the eleventh light source and the twelfth light source are inclined by 45 °.
2. The post-pad visual inspection method for a mobile phone 3D curved glass cover plate according to claim 1, wherein the method comprises the following steps: when the camera shoots a cambered surface on one side of the back of the curved glass cover plate, shooting three times to obtain three photos; and when the camera shoots the cambered surface on the other side of the back of the curved glass cover plate, shooting three times to obtain three photos.
3. The post-pad visual inspection method for a mobile phone 3D curved glass cover plate according to claim 1, wherein the method comprises the following steps: when the camera shoots the top side part of the curved glass cover plate, shooting twice to obtain two pictures; when the camera shoots the ground side part of the curved glass cover plate, the camera shoots twice, and two photos are obtained.
4. A detection device adopting the post-pad visual detection method for a mobile phone 3D curved glass cover plate according to any one of claims 1 to 3, the detection device comprising:
The first detection mechanism is used for detecting the cambered surface at the back of the curved glass cover plate and comprises a first light source, a second light source, a third light source, a fourth light source, a fifth light source, a sixth light source, a seventh light source, an eighth light source and a first camera; the first light source is positioned above the second light source, the central lines of the first light source and the second light source are overlapped, the third light source and the fourth light source are respectively positioned at the left side and the right side of the bottom of the first light source, and the fifth light source, the sixth light source, the seventh light source and the eighth light source are respectively positioned at the left side and the right side of the second light source in pairs; the first camera is positioned above the first light source, and the lens of the first camera is positioned on the central line of the first light source;
the second detection mechanism is used for detecting the top side and the bottom side of the curved glass cover plate; comprises a ninth light source, a tenth light source, an eleventh light source, a twelfth light source, a thirteenth light source, a fourteenth light source, a reflector and a second camera; the ninth light source is positioned above the tenth light source, and the center lines of the ninth light source and the tenth light source are coincident; the eleventh light source and the twelfth light source are respectively positioned at the left side and the right side of the ninth light source and are symmetrically arranged, the thirteenth light source is positioned at one side of the tenth light source and is arranged in parallel with the tenth light source, the fourteenth light source is positioned below the ninth light source, the reflector and the fourteenth light source are correspondingly arranged, the second camera is positioned above the ninth light source, and the lens of the second camera is positioned on the central line of the ninth light source.
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