CN106814075B - EVA glued membrane detecting system - Google Patents
EVA glued membrane detecting system Download PDFInfo
- Publication number
- CN106814075B CN106814075B CN201611012206.1A CN201611012206A CN106814075B CN 106814075 B CN106814075 B CN 106814075B CN 201611012206 A CN201611012206 A CN 201611012206A CN 106814075 B CN106814075 B CN 106814075B
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- camera
- light source
- eva
- film
- adhesive film
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- 239000012528 membrane Substances 0.000 title description 4
- 239000002313 adhesive film Substances 0.000 claims abstract description 38
- 230000007547 defect Effects 0.000 claims abstract description 15
- 238000007689 inspection Methods 0.000 claims description 8
- 230000000007 visual effect Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 31
- 239000013078 crystal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 241000255925 Diptera Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Classifications
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention relates to the technical field of detection of surface defects of planar sheets, and particularly discloses an EVA adhesive film detection system. According to the EVA film detection system, the display of the industrial camera is adjusted to be a black-and-white image, and the light rays emitted by the linear light source pass through the light homogenizing plate and then irradiate the EVA film, so that the black film image displayed in the shooting of the industrial camera is processed into a white film image by the light homogenizing plate, and the black point defect on the EVA film is clearer; meanwhile, the distance and the position of the light source component and the camera component relative to the EVA adhesive film are adjustable so as to adapt to the surface detection of the EVA adhesive film with different specifications, and the detection precision can be adjusted; in addition, compared with manual detection in the prior art, the automatic detection mode is higher in detection efficiency and detection precision.
Description
Technical Field
The invention relates to the technical field of detection of surface defects of planar sheets, in particular to an EVA adhesive film detection system.
Background
In the production process of the planar sheet, due to a plurality of technical factors such as insufficient dissolution of raw materials, uneven slurry feeding, unsmooth surface of a roller and the like, defects such as particle points, cracks, scratches, holes, bubbles, crystals, surface layering, color spots, pits and the like can appear on the surface, and the defects can reduce the quality of a product and also increase the difficulty of detecting the quality in the process of quality.
EVA glued membrane belongs to the plane sheet, is a thermosetting sticky glued membrane for put in the middle of doubling glass. The advantages in terms of adhesion, durability, optical characteristics and the like are achieved, so that the adhesive has been increasingly widely applied to current components and various optical products. Different defects can also occur in the EVA adhesive film in the production process due to various reasons, such as defects of material blocks, crystal points, holes and the like caused by poor materials, and defects of foreign matters such as mosquitoes, dirt, oil stains and the like. These defects seriously affect the quality of EVA adhesive films, so the quality detection of EVA adhesive films is more and more concerned by related manufacturers at present. The existing technology for manually detecting the EVA adhesive film has the defects of low detection efficiency, higher omission factor and great quality hidden danger. Therefore, it is necessary to design a dedicated EVA film inspection system for the product characteristics of EVA films.
Disclosure of Invention
The invention aims to provide a special EVA adhesive film detection system for solving the related defects in the prior art.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: an EVA film detection system, comprising at least: the machine frame is provided with a roller for transmitting EVA adhesive films; the visual module fixing frame is fixed on the rack, a camera component and a light source component are arranged on the visual module fixing frame, and the camera component and the light source component are respectively positioned on two sides of the EVA adhesive film; the camera assembly comprises a pair of industrial cameras, the distance S1 between the lenses of the pair of industrial cameras and a shooting area on an EVA adhesive film is 760-770mm, the shooting angle alpha of the lenses of the industrial cameras relative to the plane of the EVA adhesive film is 62-68 degrees, the distance between the pair of industrial cameras is 50% of the width of the EVA adhesive film, the shooting heights of the pair of industrial cameras are the same, overlapping areas exist in the shooting areas of the pair of industrial cameras in the film width direction, and the width of the overlapping areas is 9-10% of the width of the EVA adhesive film; the light source assembly comprises a line light source and a light homogenizing plate, the light homogenizing plate is located between the line light source and the EVA adhesive film, the distance S2 between the line light source and an irradiation area on the EVA adhesive film is 95-105mm, and the included angle beta between the light of the line light source and the plane of the EVA adhesive film is 81-87 degrees.
According to the EVA film detection system, the display of the industrial camera is adjusted to be a black-and-white image, and light rays emitted by a linear light source pass through the light homogenizing plate and then irradiate the EVA film, so that the black film image displayed in the shooting of the industrial camera is processed into a white film image by the light homogenizing plate, and black point defects on the EVA film are clearer; meanwhile, the distance and the position of the light source component and the camera component relative to the EVA adhesive film are adjustable, so that the EVA adhesive film surface detection device is suitable for EVA adhesive film surface detection of different specifications; in addition, compared with manual detection in the prior art, the automatic detection mode is higher in detection efficiency and detection precision.
Further, the line light source is a cold light source emitting white light.
Further, S1 is selected from any natural number of 760-770mm, and alpha is selected from any natural number of 62-68 degrees.
Further, S2 is selected from any natural number of 95-105mm, and beta is selected from any natural number of 81-87 degrees.
Further, still include the camera installing support, the camera subassembly is installed on this camera installing support, be equipped with the spout on the vision module fixed frame, the tip of camera installing support is equipped with the connecting plate, the rotatory swing joint of one end and camera installing support of this connecting plate, the other end and the slider fixed connection that can remove in the spout.
Further, a long hole is formed in the connecting plate, and the connecting position of the sliding piece and the connecting plate can move in the long hole.
Furthermore, the camera mounting bracket is also provided with a sliding groove, the industrial camera is fixedly connected with the camera mounting bracket through the camera bracket, and the camera bracket is provided with a sliding block matched with the sliding groove.
Further, a waist hole is formed in the camera support, and the industrial camera passes through the waist hole through bolts to be fixedly connected with the camera support.
Further, a connecting plate is arranged at the end part of the linear light source, one end of the connecting plate is rotatably and movably connected with the linear light source, and the other end of the connecting plate is fixedly connected with a sliding piece capable of moving in the sliding groove.
Further, a long hole is formed in the connecting plate, and the connecting position of the sliding piece and the connecting plate can move in the long hole.
Drawings
FIG. 1 is a schematic diagram of an EVA film inspection system according to the present embodiment;
FIG. 2 is a schematic diagram of an EVA film inspection system according to the present embodiment;
FIG. 3 is a schematic view showing a partial structure of the camera module according to the present embodiment;
fig. 4 is a schematic view showing a partial structure of the installation of the light source assembly according to the present embodiment.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, an EVA film inspection system of this embodiment at least includes a frame 1, a vision module fixing frame 2 and a roller 6 for conveying EVA films 7, wherein the vision module fixing frame 2 is fixed on the frame 1, a camera module and a light source module are disposed on the vision module fixing frame 2, and the camera module and the light source module are respectively located on two sides of the EVA films 7.
In this embodiment, as shown in fig. 1-2, the camera assembly includes a pair of industrial cameras 8, the distance S1 between the lenses of the pair of industrial cameras 8 and the shooting area on the EVA film 7 is 760-770mm, preferably, S1 is selected from any natural number of 760-770mm, of course, the purpose of selecting from any natural number is to facilitate adjustment and control, and S1 is also selected from the unnatural number of 760-770 mm. In addition, the shooting angle α of the lens of the industrial camera 8 relative to the plane of the EVA film 7 is 62 ° to 68 °, and similarly, α is preferably any natural number of 62 ° to 68 °, and the unnatural number in the interval of 62 ° to 68 ° should also belong to the equivalent technical scheme of this embodiment.
In addition, the interval between the pair of industrial cameras 8 is 50% of the film width of the EVA film 7, the photographing heights of the pair of industrial cameras are the same, and the photographing areas of the pair of industrial cameras in the film width direction have overlapping areas, and the width of the overlapping areas is 9% -10% of the film width of the EVA film. Preferably, in this embodiment, the film width S3 of the EVA film 7 is 2200mm, the space S4 between the pair of industrial cameras 8 is 1100mm, and the width of the overlapping area is 20mm.
As shown in fig. 1-2, the light source assembly of the present embodiment includes a linear light source 5 and a light homogenizing plate 3, wherein the light homogenizing plate 3 is located between the linear light source 5 and an EVA film 7. The distance S2 between the linear light source 5 and the irradiation area on the EVA adhesive film is 95-105mm, and the included angle beta between the light of the linear light source and the plane of the EVA adhesive film is 81-87 degrees. Like S1 and α in the camera assembly, S2 and β are preferably selected from any natural number within the corresponding numerical range for easy adjustment, and naturally, the unnatural number also belongs to the technical solution equivalent to the present embodiment.
Further, as shown in fig. 3, the industrial camera 8 of the present embodiment is connected to the vision module fixing frame 2 through the camera mounting bracket 4. Wherein, the fixed frame 2 of the vision module is provided with a chute 21, the end of the camera mounting bracket 4 is provided with a connecting plate 9, one end of the connecting plate 9 is rotatably and movably connected with the camera mounting bracket 4, and the other end is fixedly connected with a sliding piece (not shown in the figure) which can move in the chute 21. Preferably, the connecting plate 9 is provided with a long hole 91, and the connection position of the slider and the connecting plate 9 can move in the long hole 91. Thus, the adjustment between the camera mounting bracket 4 and the vision module fixing frame 2 comprises at least 3 degrees of freedom, namely: the rotational movement between the connection plate and the camera mounting bracket 4, the movement of the runner in the chute and the adjustable movement of the runner in the slot 91.
Further, a sliding groove 41 is further formed in the camera mounting bracket 4, the industrial camera 8 is fixedly connected with the camera mounting bracket 4 through a camera bracket 42, a sliding block 43 matched with the sliding groove 41 is arranged on the camera bracket 4, meanwhile, a waist hole 44 is formed in the camera bracket 42, and the industrial camera 8 passes through the waist hole 44 and is fixedly connected with the camera bracket 42 through bolts. The purpose of setting like this is that the position of industry camera 8 on camera installing support 4 is adjustable, and accurate adjustment distance and angle of being convenient for promotes the precision that detects.
Further, as shown in fig. 4, the end of the linear light source 5 of the present embodiment is provided with a connecting plate 9, one end of the connecting plate 9 is rotatably and movably connected with the linear light source, and the other end is fixedly connected with a sliding member (not shown) movable in the chute 21. Meanwhile, a long hole 91 is formed in the connecting plate, and the connecting position of the sliding piece and the connecting plate can move in the long hole 91. This structure allows the adjustment between the line light source and the vision module fixing frame 2 to include at least 3 degrees of freedom, namely: the rotational movement between the connection plate and the line source, the movement of the runner in the chute and the adjustable movement of the runner in the slot 91. The adjustment of multiple threshold values can be suitable for EVA adhesive film detection of different specifications, and meanwhile, the accuracy of surface detection can be adjusted.
According to the EVA film detection system, the display of the industrial camera is adjusted to be a black-and-white image, and light rays emitted by a linear light source pass through the light homogenizing plate and then irradiate the EVA film, so that the black film image displayed in the shooting of the industrial camera is processed into a white film image by the light homogenizing plate, and black point defects on the EVA film are clearer; meanwhile, the distance and the position of the light source component and the camera component relative to the EVA adhesive film are adjustable, so that the EVA adhesive film surface detection device is suitable for EVA adhesive film surface detection of different specifications; in addition, compared with manual detection in the prior art, the automatic detection mode is higher in detection efficiency and detection precision.
It should be noted that, the processing manner of processing the picture shot by the camera in the computer system and how to determine whether the surface defect exists belongs to the prior art, and the specific processing manner of the picture is not limited in detail in this embodiment.
In summary, the foregoing description is only of the preferred embodiments of the invention, and is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (4)
1. An EVA film inspection system, comprising:
the machine frame is provided with a roller for transmitting EVA adhesive films;
the visual module fixing frame is fixed on the rack, a camera component and a light source component are arranged on the visual module fixing frame, and the camera component and the light source component are respectively positioned on two sides of the EVA adhesive film;
the camera assembly comprises a pair of industrial cameras, wherein the distance S1 between the lenses of the pair of industrial cameras and a shooting area on an EVA adhesive film is 760-770mm, the shooting angle alpha of the lenses of the industrial cameras relative to the plane of the EVA adhesive film is 62-68 degrees, the distance between the pair of industrial cameras is 50% of the width of the EVA adhesive film, the shooting heights of the pair of industrial cameras are the same, overlapping areas exist in the shooting areas of the pair of industrial cameras in the film width direction, and the width of the overlapping areas is 9-10% of the width of the EVA adhesive film;
the light source assembly comprises a line light source and a light homogenizing plate, wherein the light homogenizing plate is positioned between the line light source and the EVA adhesive film, the distance S2 between the line light source and an irradiation area on the EVA adhesive film is 95-105mm, and the included angle beta between the light of the line light source and the plane of the EVA adhesive film is 81-87 degrees;
the display of the industrial camera is adjusted to be a black-and-white image, and light rays emitted by the linear light source pass through the light homogenizing plate and then irradiate the EVA adhesive film, so that the black film image displayed in the shooting of the industrial camera is processed into a white film image by the light homogenizing plate, and the black point defect on the EVA adhesive film is clearer;
the camera module is arranged on the camera mounting bracket, a sliding groove is formed in the vision module fixing frame, a connecting plate is arranged at the end part of the camera mounting bracket, one end of the connecting plate is in rotary movable connection with the camera mounting bracket, the other end of the connecting plate is fixedly connected with a sliding piece capable of moving in the sliding groove, a long hole is formed in the connecting plate, and the connecting position of the sliding piece and the connecting plate can move in the long hole; the camera mounting bracket is also provided with a sliding groove, the industrial camera is fixedly connected with the camera mounting bracket through the camera bracket, and the camera bracket is provided with a sliding block matched with the sliding groove; the camera support is provided with a waist hole, and the industrial camera is fixedly connected with the camera support through the waist hole by a bolt; the end part of the linear light source is provided with a connecting plate, one end of the connecting plate is rotatably and movably connected with the linear light source, and the other end of the connecting plate is fixedly connected with a sliding piece which can move in the sliding groove; the connecting plate is provided with a long hole, and the connecting position of the sliding piece and the connecting plate can move in the long hole.
2. The EVA film inspection system of claim 1, wherein the line light source is a cold light source that emits white light.
3. The EVA film inspection system according to claim 1, wherein S1 is selected from any natural number from 760 to 770 to mm, and α is selected from any natural number from 62 ° to 68 °.
4. The EVA film inspection system according to claim 1, wherein S2 is selected from any natural number from 95-105mm and β is selected from any natural number from 81 ° -87 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611012206.1A CN106814075B (en) | 2016-11-17 | 2016-11-17 | EVA glued membrane detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611012206.1A CN106814075B (en) | 2016-11-17 | 2016-11-17 | EVA glued membrane detecting system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106814075A CN106814075A (en) | 2017-06-09 |
| CN106814075B true CN106814075B (en) | 2023-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611012206.1A Active CN106814075B (en) | 2016-11-17 | 2016-11-17 | EVA glued membrane detecting system |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108931530A (en) * | 2018-07-09 | 2018-12-04 | 杭州利珀科技有限公司 | A kind of detection system of pvdf membrane |
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| CN1844899A (en) * | 2005-04-08 | 2006-10-11 | 株式会社名南制作所 | Wide article detection method |
| CN102798637A (en) * | 2012-08-29 | 2012-11-28 | 北京大恒图像视觉有限公司 | Device and method for detecting surface quality of printed matters |
| CN103592955A (en) * | 2013-11-05 | 2014-02-19 | 无锡市瑞尔精密机械股份有限公司 | Adjusting device of machine vision detection system |
| TWM500888U (en) * | 2014-11-14 | 2015-05-11 | Wintriss Inspection Solutions Ltd | Substrate defect inspection apparatus for inspecting transparent substrate |
| CN105372257A (en) * | 2014-08-19 | 2016-03-02 | 东友精细化工有限公司 | Optical membrane inspecting device |
| CN105784711A (en) * | 2014-12-25 | 2016-07-20 | 锐视（厦门）科技有限公司 | Cod liver oil soft capsule appearance defect visual detection method and device |
| CN206177845U (en) * | 2016-11-17 | 2017-05-17 | 杭州利珀科技有限公司 | EVA glues film detection device |
-
2016
- 2016-11-17 CN CN201611012206.1A patent/CN106814075B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1844899A (en) * | 2005-04-08 | 2006-10-11 | 株式会社名南制作所 | Wide article detection method |
| CN102798637A (en) * | 2012-08-29 | 2012-11-28 | 北京大恒图像视觉有限公司 | Device and method for detecting surface quality of printed matters |
| CN103592955A (en) * | 2013-11-05 | 2014-02-19 | 无锡市瑞尔精密机械股份有限公司 | Adjusting device of machine vision detection system |
| CN105372257A (en) * | 2014-08-19 | 2016-03-02 | 东友精细化工有限公司 | Optical membrane inspecting device |
| TWM500888U (en) * | 2014-11-14 | 2015-05-11 | Wintriss Inspection Solutions Ltd | Substrate defect inspection apparatus for inspecting transparent substrate |
| CN105784711A (en) * | 2014-12-25 | 2016-07-20 | 锐视（厦门）科技有限公司 | Cod liver oil soft capsule appearance defect visual detection method and device |
| CN206177845U (en) * | 2016-11-17 | 2017-05-17 | 杭州利珀科技有限公司 | EVA glues film detection device |
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