CN114184122A - Inspection process for appearance size and warping degree of electroplated copper sheet - Google Patents
Inspection process for appearance size and warping degree of electroplated copper sheet Download PDFInfo
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- CN114184122A CN114184122A CN202111506443.4A CN202111506443A CN114184122A CN 114184122 A CN114184122 A CN 114184122A CN 202111506443 A CN202111506443 A CN 202111506443A CN 114184122 A CN114184122 A CN 114184122A
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- electroplated
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- 238000007689 inspection Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 26
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 21
- 239000010949 copper Substances 0.000 title claims abstract description 21
- 238000001514 detection method Methods 0.000 claims abstract description 60
- 230000000007 visual effect Effects 0.000 claims abstract description 17
- 238000009713 electroplating Methods 0.000 claims description 17
- 238000005286 illumination Methods 0.000 claims description 7
- 238000003384 imaging method Methods 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 abstract description 8
- 238000000576 coating method Methods 0.000 abstract description 8
- 238000005498 polishing Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000002131 composite material Substances 0.000 abstract description 5
- 230000005587 bubbling Effects 0.000 abstract description 4
- 238000012216 screening Methods 0.000 abstract description 2
- 241000251468 Actinopterygii Species 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000011179 visual inspection Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005253 cladding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
- B07C5/342—Sorting according to other particular properties according to optical properties, e.g. colour
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
- B07C5/342—Sorting according to other particular properties according to optical properties, e.g. colour
- B07C5/3422—Sorting according to other particular properties according to optical properties, e.g. colour using video scanning devices, e.g. TV-cameras
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/36—Sorting apparatus characterised by the means used for distribution
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Multimedia (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses an inspection process for appearance size and warping degree of an electroplated copper sheet, which comprises the following steps: conveying the electroplated product to a warping degree and size detection station to detect the warping degree and size of the product; conveying the electroplated product to a first appearance detection station, and carrying out AOI appearance detection on the front surface of the electroplated product; conveying the electroplated product to a second appearance detection station, and carrying out AOI appearance detection on the reverse side of the electroplated product; the electroplated product is sent to a third appearance detection work station, AOI appearance detection is carried out on two side surfaces of the electroplated product, and automatic detection and screening are carried out on the phenomena of product appearance scratch, copper exposure, coating bubbling, coating peeling and non-uniform chromaticity by combining AOI multi-work station visual detection and a composite polishing technology; adopt 3D camera detection technique to product size and product warpage, change the phenomenon that traditional artifical detection efficiency was leaked and is examined slowly easily, promote the product quality, then for manufacturing enterprise reduce cost.
Description
Technical Field
The invention relates to an inspection process, in particular to an inspection process for the appearance size and warping degree of an electroplated copper sheet.
Background
In the production process of the copper sheet after stamping and electroplating, various adverse phenomena can be caused by various processes such as a stamping process, a welding process, an electroplating process, a polishing process after electroplating, a manual detection process and the like:
1 poor appearance before electroplating causes still to exist after electroplating, owing to transport repeatedly in the course of the process, gets and puts, causes the collision fish tail of product outward appearance, because the fish tail depth is too deep, the cladding material is difficult to cover the mar flaw after electroplating.
2, the product has poor warping, and the product is uneven due to warping deformation generated by residual stress after welding and heating.
3. Copper is exposed after electroplating and polishing after electroplating, the plating layer is foamed, the plating layer is stripped, and the chroma is not uniform.
4. The dimension is poor, and a leak hole and the dimension are poor in the stamping process, such as abrasion or damage of a stamping needle of a die and dimension poor caused by abrasion and damage of the stamping die.
5. Above-mentioned problem point all relies on the manual work to detect before shipment, because the detection project is numerous, the leakage that personnel detected causes the outflow of defective products, seriously restricts the quality of product, leads to the fact the rise of cost then.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a method for automatically detecting and screening the phenomena of product appearance scratch, copper exposure, coating bubbling, coating peeling and non-uniform chroma after electroplating and electroplating polishing by combining AOI multi-station visual detection with a composite polishing technology; and 3D camera detection technology is adopted for product size and product warping, and the appearance size and warping degree of the electroplated copper sheet are improved.
In order to achieve the purpose, the invention adopts the technical scheme that: an appearance size and warping degree inspection process of an electroplated copper sheet comprises the following steps:
conveying the electroplated product to a warping degree and size detection station to detect the warping degree and size of the product;
conveying the electroplated product to a first appearance detection station, and carrying out AOI appearance detection on the front surface of the electroplated product;
conveying the electroplated product to a second appearance detection station, and carrying out AOI appearance detection on the reverse side of the electroplated product;
and (4) conveying the electroplated product to a third appearance detection work station, and carrying out AOI appearance detection on two side surfaces of the electroplated product.
And further, the product line before electroplating is sent to a warping degree and size detection work station to detect the warping degree and size of the product.
Further, a 3D camera assembly in the warping degree and size detection work station performs 3D imaging on the product and completes detection of the warping degree and size of the product; among the 3D camera component categories are, but not limited to: a monocular 3D camera, a binocular 3D camera, and a line scan 3D camera.
Further, in a first appearance inspection work station, the first appearance inspection visual camera component utilizes illumination provided by the first light source to perform appearance inspection photographing and phase taking on the front surface of the product.
Further, in the second appearance inspection work station, the second appearance inspection visual camera component utilizes illumination provided by the second light source to perform appearance inspection photographing and photo taking on the reverse side of the product.
Further, in a third appearance inspection station, the third appearance inspection visual camera assembly performs appearance inspection photographing and phase taking on the reverse side of the product by using illumination provided by a third positive light source and a backlight source.
Further, the first light source, the second light source and the second light source are RGB multicolor or monochromatic light sources; wherein the light source is annular light, coaxial light, linear light source, surface light source, strip light or dome light.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
according to the inspection process for the appearance size and warping degree of the electroplated copper sheet, the 3D imaging technology and the 2D-AOI are adopted to automatically and fully inspect the various adverse phenomena of the processed product, wherein the AOI multi-station visual inspection is combined with the composite polishing technology to automatically detect and screen the phenomena of product appearance scratch, copper exposure after electroplating and electroplating polishing, coating bubbling, coating stripping and nonuniform chromaticity; adopt 3D camera detection technique to product size and product warpage, change the phenomenon that traditional artifical detection efficiency was missed to examine easily slowly, promote the product quality, then for manufacturing enterprise reduce cost, accord with actual user demand.
Drawings
The technical scheme of the invention is further explained by combining the accompanying drawings as follows:
FIG. 1 is a schematic view of the detection process of the present invention;
FIG. 2 is a schematic view of a detection structure of the present invention;
wherein: 1. a warping degree and size detection station; 2. a 3D camera component; 3. a first appearance inspection station; 4. a first light source; 5. a first appearance inspection visual camera component; 6. a second appearance inspection station; 7. a second light source; 8. a second appearance inspection visual camera component; 9. a third appearance inspection station; 10. a third backlight source; 11. a third appearance inspection visual camera component; 12. and a third positive light source.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention.
Referring to fig. 1-2, the inspection process for the appearance size and warpage of an electroplated copper sheet according to the present invention comprises the following steps: s1, the electroplated product is sent to warping degree and size detection station 1 to detect the warping degree and size of the product.
Specifically, the 3D camera assembly 2 in the warping degree and size detection work station 1 performs 3D imaging on the product and completes detection of the warping degree and size of the product, and the detection is completed and then displayed through the display, so that whether the warping degree and size of the product after being electroplated are qualified or not can be quickly known.
Among the 3D camera component categories are, but not limited to: a monocular 3D camera, a binocular 3D camera, and a line scan 3D camera.
S2, conveying the electroplated product to a first appearance detection station 3, and carrying out AOI appearance detection on the front surface of the electroplated product; specifically, the first visual appearance inspection camera assembly 5 in the first visual appearance inspection station 3 performs visual appearance inspection photographing and photo taking on the front surface of the product by using illumination provided by the first light source 4, and real-time display can be performed on the display after photographing.
The first light source is an RBG multicolor or monochromatic light source, and the light source is annular light, coaxial light, linear light source, surface light source, strip light or dome light; the light color can be output in RGB multicolor or monochrome.
S3, the electroplated product is sent to a second appearance detection station, AOI appearance detection is carried out on the reverse side of the electroplated product, the detection mode of the second appearance detection station is the same as that of the first appearance detection station, and only the second appearance detection station detects the reverse side of the product.
S4 sends the electroplated product to a third appearance inspection work station, AOI appearance inspection is carried out on two side faces of the electroplated product, and a third positive light source and a third backlight source in the third appearance inspection work station are matched with a third appearance inspection vision camera component to carry out AOI inspection on the two side faces of the product.
In addition, the sequence of the steps among the steps S2, S3 and S4 is not unique, the sequence of the steps can be adjusted mutually, and one or more appearance detection stations can be added to meet the AOI appearance detection requirements of products with different shapes.
As a further preferred embodiment, the warpage and size detection station 1 can also perform a preliminary detection before electroplating in the same manner as the step S1, so as to determine the warpage and size of the product in advance, avoid processing defective products, and avoid waste of production.
The inspection process adopts a multicolor RGB light source composite lighting mode, combines application annular light of various light sources, coaxial light, a line light source, an area light source, bar light and various RGB multicolor/monochromatic light sources of dome light to provide detection light, can freely switch the quantity and the color of the light sources through a controller, provides various color lighting modes and applies various cameras according to product characteristics.
The first appearance inspection visual camera component, the second appearance inspection visual camera component and the third appearance inspection visual camera component during AOI inspection use linear array or area array cameras, and the 3D camera component during 3D inspection uses binocular 3D cameras according to different product characteristics; the monocular 3D camera and the line scanning 3D camera effectively realize each function detection item through the combination of different light sources and cameras, ensure the product yield in the manufacturing process to be improved and the service life of a relevant equipment mold to be improved, and then reduce the cost for production enterprises.
The appearance size and warping degree inspection process of the electro-coppering piece utilizes 3D imaging technology and 2D-AOI to automatically and fully inspect each bad phenomenon of a processed product, wherein AOI multi-station visual inspection is combined with a composite polishing technology to automatically detect and screen the phenomena of product appearance scratch, copper exposure after electroplating and electroplating polishing, coating bubbling, coating stripping and non-uniform chromaticity; adopt 3D camera detection technique to product size and product warpage, change the phenomenon that traditional artifical detection efficiency was missed to examine easily slowly, promote the product quality, then for manufacturing enterprise reduce cost, accord with actual user demand.
The above is only a specific application example of the present invention, and the protection scope of the present invention is not limited in any way. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (7)
1. The inspection process for the appearance size and warpage of the electroplated copper sheet is characterized by comprising the following steps of:
conveying the electroplated product to a warping degree and size detection station to detect the warping degree and size of the product;
conveying the electroplated product to a first appearance detection station, and carrying out AOI appearance detection on the front surface of the electroplated product;
conveying the electroplated product to a second appearance detection station, and carrying out AOI appearance detection on the reverse side of the electroplated product;
and (4) conveying the electroplated product to a third appearance detection work station, and carrying out AOI appearance detection on two side surfaces of the electroplated product.
2. The process for inspecting the external dimension and warpage of an electroplated copper sheet as claimed in claim 1, wherein: and (4) conveying the product line before electroplating to a warping degree and size detection work station to detect the warping degree and size of the product.
3. The process for inspecting the external dimension and warpage of an electroplated copper sheet as claimed in claim 1 or 2, wherein: the 3D camera assembly in the warping degree and size detection work station performs 3D imaging on the product and completes detection of the warping degree and size of the product; among the 3D camera component categories are, but not limited to: a monocular 3D camera, a binocular 3D camera, and a line scan 3D camera.
4. The process for inspecting the external dimension and warpage of an electroplated copper sheet as claimed in claim 1, wherein: in a first appearance inspection work station, a first appearance inspection visual camera component utilizes illumination provided by a first light source to perform appearance inspection photographing and phase taking on the front surface of a product.
5. The process for inspecting the external dimension and warpage of an electroplated copper sheet as claimed in claim 1, wherein: in the second appearance inspection work station, the second appearance inspection visual camera component utilizes illumination provided by the second light source to perform appearance inspection photographing and photo taking on the reverse side of the product.
6. The process for inspecting the external dimension and warpage of an electroplated copper sheet as claimed in claim 1, wherein: in the third appearance inspection station, the third appearance inspection visual camera component performs appearance inspection photographing and phase taking on the reverse side of the product by utilizing illumination provided by the third positive light source and the backlight source.
7. The process for inspecting the physical dimension and warpage of an electroplated copper sheet as claimed in claim 4, 5 or 6, wherein: the first light source, the second light source and the second light source are RGB multicolor or monochromatic light sources; wherein the light source is annular light, coaxial light, linear light source, surface light source, strip light or dome light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111506443.4A CN114184122A (en) | 2021-12-10 | 2021-12-10 | Inspection process for appearance size and warping degree of electroplated copper sheet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111506443.4A CN114184122A (en) | 2021-12-10 | 2021-12-10 | Inspection process for appearance size and warping degree of electroplated copper sheet |
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| CN114184122A true CN114184122A (en) | 2022-03-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114850055A (en) * | 2022-04-27 | 2022-08-05 | 艺创智控科技(东莞)有限公司 | Automatic detection process for size and appearance of knife particles |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4851902A (en) * | 1986-10-29 | 1989-07-25 | Electroplating Engineers Of Japan, Limited | Auatomatic inspection system for IC lead frames and visual inspection method thereof |
| CN201844980U (en) * | 2010-08-31 | 2011-05-25 | 常州视觉龙机电设备有限公司 | Automatic detection system of solar silicon wafer |
| CN204373688U (en) * | 2014-12-24 | 2015-06-03 | 苏州道蒙恩电子科技有限公司 | A kind of electroplating assembly line outward appearance and dimension control equipment |
| CN110530892A (en) * | 2019-10-16 | 2019-12-03 | 苏州诠泰智能装备有限公司 | A kind of workpiece flaw disc type check machine more regarded based on polychromatic source general-using type |
| CN112816497A (en) * | 2021-01-22 | 2021-05-18 | 易启科技(吉林省)有限公司 | Device for detecting appearance defects of electroplated decoration in real time and detection method thereof |
| CN113030095A (en) * | 2021-02-24 | 2021-06-25 | 杭州微纳智感光电科技有限公司 | Polaroid appearance defect detecting system |
| CN113030118A (en) * | 2021-03-12 | 2021-06-25 | 深圳橙子自动化有限公司 | Appearance detection equipment and display screen detection assembly line |
| CN113073366A (en) * | 2021-03-18 | 2021-07-06 | 东莞市志兴电子五金有限公司 | Etching silver plating matching process applied to copper sheet |
| CN113532306A (en) * | 2021-08-24 | 2021-10-22 | 苏州诠泰智能装备有限公司 | Vertical TV backplate angularity inspection machine |
-
2021
- 2021-12-10 CN CN202111506443.4A patent/CN114184122A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4851902A (en) * | 1986-10-29 | 1989-07-25 | Electroplating Engineers Of Japan, Limited | Auatomatic inspection system for IC lead frames and visual inspection method thereof |
| CN201844980U (en) * | 2010-08-31 | 2011-05-25 | 常州视觉龙机电设备有限公司 | Automatic detection system of solar silicon wafer |
| CN204373688U (en) * | 2014-12-24 | 2015-06-03 | 苏州道蒙恩电子科技有限公司 | A kind of electroplating assembly line outward appearance and dimension control equipment |
| CN110530892A (en) * | 2019-10-16 | 2019-12-03 | 苏州诠泰智能装备有限公司 | A kind of workpiece flaw disc type check machine more regarded based on polychromatic source general-using type |
| CN112816497A (en) * | 2021-01-22 | 2021-05-18 | 易启科技(吉林省)有限公司 | Device for detecting appearance defects of electroplated decoration in real time and detection method thereof |
| CN113030095A (en) * | 2021-02-24 | 2021-06-25 | 杭州微纳智感光电科技有限公司 | Polaroid appearance defect detecting system |
| CN113030118A (en) * | 2021-03-12 | 2021-06-25 | 深圳橙子自动化有限公司 | Appearance detection equipment and display screen detection assembly line |
| CN113073366A (en) * | 2021-03-18 | 2021-07-06 | 东莞市志兴电子五金有限公司 | Etching silver plating matching process applied to copper sheet |
| CN113532306A (en) * | 2021-08-24 | 2021-10-22 | 苏州诠泰智能装备有限公司 | Vertical TV backplate angularity inspection machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114850055A (en) * | 2022-04-27 | 2022-08-05 | 艺创智控科技(东莞)有限公司 | Automatic detection process for size and appearance of knife particles |
| CN114850055B (en) * | 2022-04-27 | 2024-06-07 | 艺创智控科技(东莞)有限公司 | Automatic detection process for appearance of cutter grain size |
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