CN211402165U - Appearance flaw detection device - Google Patents
Appearance flaw detection device Download PDFInfo
- Publication number
- CN211402165U CN211402165U CN201921722260.4U CN201921722260U CN211402165U CN 211402165 U CN211402165 U CN 211402165U CN 201921722260 U CN201921722260 U CN 201921722260U CN 211402165 U CN211402165 U CN 211402165U
- Authority
- CN
- China
- Prior art keywords
- light source
- support
- detection device
- camera shooting
- unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The utility model provides an outward appearance flaw detection device, including support, camera shooting unit, light source support and coaxial light source, the camera shooting support reaches the light source support install in on the support, the camera shooting unit install in on the camera shooting support, coaxial light source install in on the light source support, when waiting to detect the product place in when outward appearance flaw detection device is last, waiting of product wait to examine 3D face to face the camera shooting unit reaches coaxial light source, the camera shooting unit with wait to examine the distance between the 3D face edge and be first preset distance, coaxial light source with wait to examine the distance between the 3D face edge and predetermine the distance for the second, the camera shooting unit is used for shoot when coaxial light source opens wait to examine the image of 3D face. The utility model discloses realize the automatic detection of product 3D face outward appearance, reduced the human cost, improved the detection accuracy.
Description
Technical Field
The utility model relates to an outward appearance flaw detects technical field, especially relates to an outward appearance flaw detection device that detects flaws such as acid, dirty, corrosion point, uneven dyeing, white point, material heterochrosis, watermark on the 3D face to product appearance.
Background
With the development of production processes, the precision requirements of factory segments on the products manufactured are higher and higher. Among them, appearance is an important item for determining product accuracy. In the industrial production process, factors such as abrasion, scratch, error, misoperation and the like are easy to damage the appearance of a produced product, such as acid dripping, dirt, corrosion points, uneven dyeing, white points, material heterochrosis, watermarks and other defects generated on the 3D surface of the product, so that the appearance detection of the items is an essential procedure before the product leaves a factory. However, many factories often manually perform appearance inspection of these items, which increases labor costs for the factories and is also prone to errors, thereby affecting the accuracy of the appearance inspection.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is desirable to provide an appearance defect detecting apparatus for detecting defects such as acid dripping, smudging, corrosion spots, uneven dyeing, white spots, material discoloration, and watermarks on a 3D surface of the product appearance.
The utility model provides an outward appearance flaw detection device for at least a flaw in waiting to examine the 3D face of product outward appearance is detected in acid dripping, dirty, corrosion point, uneven dyeing, white point, material heterochrosis and the watermark flaw, outward appearance flaw detection device includes support, camera bracket, camera unit, light source support and coaxial light source, the camera bracket reaches the light source support install in on the support, the camera unit install in on the camera bracket, coaxial light source install in on the light source support, when waiting to detect the product place in when outward appearance flaw detection device is last, waiting of product is examined the 3D face and is faced camera unit reaches coaxial light source, camera unit with wait to examine the 3D face edgeThe distance between the two is a first preset distance H1The distance between the coaxial light source and the edge of the 3D surface to be detected is a second preset distance H2The camera shooting unit is used for shooting the image of the 3D surface to be detected when the coaxial light source is started, wherein the first preset distance H1＝x*[(a+b)/2]The second preset distance H2＝y*[(a+b)/2]A is the product length and b is the product width, 1.8<x<2.2，0.1<y<0.2。
Preferably, the 3D surface to be inspected of the product comprises eight detection areas, and the image pickup unit is configured to capture an image of each detection area when the coaxial light source is turned on so as to perform appearance detection on the 3D surface to be inspected of the product.
Preferably, outward appearance flaw detection device still includes the manipulator, the manipulator is used for the camera unit shoot when waiting to examine the image of 3D face, control the product carries out the matrix and removes in order to switch into the detection area of camera unit shooting range.
Preferably, the appearance defect detection device further comprises a camera shooting adjusting support, wherein the camera shooting adjusting support is arranged on the support and is fixedly connected with the camera shooting support and used for adjusting the position of the camera shooting unit so that the distance between the camera shooting unit and the edge of the 3D surface to be detected is the first preset distance.
Preferably, the support includes two slide rails, the camera shooting adjusting support includes a first sliding portion, a first locking portion and a connecting portion, two ends of the first sliding portion are respectively sleeved on the slide rails, one end of the first sliding portion is engaged with the first locking portion, the first locking portion is used for locking the first sliding portion, the connecting portion is fixedly connected with the first sliding portion and the camera shooting support, and when the first locking portion is driven by an external force to rotate, the first sliding portion is driven by the first locking portion to slide up and down along the slide rails so as to adjust the position of the camera shooting unit.
Preferably, the camera support comprises a fixing part and a fine adjustment part, the fixing part is used for fixing the camera unit, and the fine adjustment part is used for accurately adjusting the position of the camera unit.
Preferably, the appearance defect detecting device further comprises a light source adjusting support, wherein the light source adjusting support is arranged on the support, is fixedly connected with the coaxial light source, and is used for adjusting the position of the coaxial light source so that the distance between the coaxial light source and the edge of the 3D surface to be detected is the second preset distance.
Preferably, the light source adjusting bracket includes a second sliding portion and a second locking portion, two ends of the second sliding portion are respectively sleeved on the slide rail, and one end of the second sliding portion is engaged with the second locking portion, the light source bracket includes two supporting portions respectively installed on the second sliding portion, the coaxial light source is erected on the two supporting portions, and when the second locking portion is driven by an external force to rotate, the second sliding portion is driven by the second locking portion to slide up and down along the slide rail, so as to adjust the position of the coaxial light source.
Preferably, the appearance defect detection device further comprises an analysis unit and a display unit, the analysis unit is configured to analyze the image captured by the image capturing unit by using an appearance defect neural network algorithm function, so as to determine whether the captured 3D surface to be detected has acid dripping, dirt, corrosion spots, uneven dyeing, white spots, material heterochrosis or watermark defects, and the display unit is configured to display an appearance detection result obtained by analysis of the analysis unit.
Preferably, the focal length range of the image pickup unit is 33-37 mm, and the exposure time range is 4600 and 5400 mu s.
The appearance flaw detection device realizes mechanical detection of product appearance through the camera and the light source matching mechanical device, does not need manual work to carry out appearance detection, reduces the labor cost, and effectively improves the accuracy of product appearance detection.
Drawings
Fig. 1 is an overall structure diagram of an appearance defect detecting device according to a preferred embodiment of the present invention.
Fig. 2 is an exploded view of an appearance defect detecting device according to a preferred embodiment of the present invention.
Fig. 3 is a layout diagram of the components of the 3D surface to be inspected for the product detected by the appearance defect detecting device according to the preferred embodiment of the present invention.
Fig. 4 is the detection area schematic diagram of the 3D surface to be inspected for the product in the preferred embodiment of the present invention.
Fig. 5 is a schematic view of an application structure of the appearance defect detecting device according to a preferred embodiment of the present invention.
Description of the main elements
The following detailed description of the invention will be further described in conjunction with the above-identified drawings.
Detailed Description
Referring to fig. 1, an appearance defect detecting device 1 according to a preferred embodiment of the present invention is provided. In this embodiment, the appearance defect detecting apparatus 1 performs appearance detection on the 3D surface to be inspected by shooting and analyzing an image of the 3D surface to be inspected of the product 2 through the camera unit to detect whether or not the 3D surface to be inspected of the product 2 has defects such as acid dripping, dirt, corrosion spots, uneven dyeing, white spots, material discoloration, watermarks, and the like. The product 2 may be a housing for an electronic device such as a router, modem, television box, etc.
The corrosion points on the 3D surface to be detected of the flaw product are generally in a spot shape, light gray, irregular in distribution and generally in a sheet shape. The acid dripping on the 3D surface to be detected of the flaw product is generally in a strip water drop shape, and the color is light gray and irregular in direction. Through the utility model discloses an outward appearance flaw detection device 1 that exposes shoots and analysis to product appearance, can realize judging the inspection to the flaw on the microscale that diameter 0.01mm-0.02 mm's 3D face corrosion site to and length 0.5mm-50mm, width 0.5mm-10 mm's 3D face acid dripping etc. even people's eye is difficult to distinguish.
Referring to fig. 2, the appearance defect detecting apparatus 1 includes a bracket 10, a camera unit 20, a camera bracket 30, a camera adjusting bracket 40, a coaxial light source 50, a light source bracket 60, a light source adjusting bracket 70, and a base 80. The camera bracket 30 and the light source bracket 60 are mounted on the bracket 10, the camera unit 20 is mounted on the camera bracket 30, the coaxial light source 50 is mounted on the light source bracket 60, and the base 80 is fixedly connected with the end of the bracket 10. The camera adjusting bracket 40 is installed on the bracket 10 and is fixedly connected with the camera bracket 30. The light source adjusting bracket 70 is installed on the bracket 10 and is fixedly connected with the light source bracket 60.
In this embodiment, the camera unit 20 is an industrial camera with twelve thousand pixels, and is configured with a fixed-focus industrial lens with a focal length of 33-37 mm and a depth of field of 3-5 mm, and the exposure time range is 4600-. The focal length f of the image pickup unit 20 is equal to the lens magnification WD. Where WD is the working distance of the imaging unit 20. The color temperature range of the coaxial light source 50 is 5000-.
When a product 2 to be detected is placed on the appearance flaw detection device 1, the camera unit 20 is configured to capture an image of the 3D surface to be detected when the coaxial light source 50 is turned on, so as to perform appearance detection on the product 2.
Referring to fig. 1 and 3 together, the product 2 includes a 3D surface 21 to be inspected. When the product 2 is placed on the appearance defect detecting apparatus 1, the 3D surface to be inspected 21 of the product 2 faces the camera unit 20. The camera unit 20 and the coaxial light source 50 are perpendicular to the normal tangent of the 3D surface to be inspected 21. The distance between the camera unit 20 and the edge of the 3D surface to be detected 21 is a first preset distance H1The distance between the coaxial light source 50 and the edge of the 3D surface to be detected 21 is a second preset distance H2。
Preferably, the first preset distance H is when the product 2 has a length a, a width b and a height c1＝x*[(a+b)/2]The second preset distance H2＝y*[(a+b)/2]. Therein, 1.8<x<2.2，0.1<y<0.2。
As shown in FIGS. 1 and 2, in the present embodimentIn the formula, the support 10 includes two slide rails 101. The imaging adjustment bracket 40 includes a first sliding portion 401, a first locking portion 402, and a connecting portion 403. Two ends of the first sliding portion 401 are respectively sleeved on the slide rail 101, and one end of the first sliding portion is engaged with the first locking portion 402. The first locking portion 402 is used to lock the first sliding portion 401. The connecting portion 403 is fixedly connected to the first sliding portion 401 and the imaging bracket 30. The imaging holder 30 includes a fixing portion 301 and a fine-tuning portion 302. The fixing portion 301 is used for fixing the image capturing unit 20, and the fine-tuning portion 302 is used for precisely adjusting the position of the image capturing unit 20. When the first locking portion 402 is driven by an external force to rotate, the first sliding portion 401 is driven by the first locking portion 402 to slide up and down along the slide rail 101 to adjust the position of the image capturing unit 20, and the fine adjustment portion 302 is used to adjust the distance between the image capturing unit 20 and the edge of the 3D surface 21 to be inspected to be the first preset distance H1。
In this embodiment, the light source adjusting bracket 70 includes a second sliding portion 701 and a second locking portion 702. Both ends of the second sliding portion 701 are respectively sleeved on the slide rail 101, and one end of the second sliding portion is engaged with the second locking portion 702. The light source bracket 60 includes two supporting portions 601 respectively mounted on the second sliding portions 701. The coaxial light source 50 is mounted on the two support portions 601. When the second locking portion 702 is driven by an external force to rotate, the second sliding portion 701 is driven by the second locking portion 702 to slide up and down along the slide rail 101, so as to adjust the position of the coaxial light source 50, and the distance between the coaxial light source 50 and the edge of the 3D surface to be inspected 21 is the second preset distance H2。
Referring to fig. 4, the 3D surface to be inspected 21 includes eight detection areas, and the camera unit 20 is configured to capture an image of each detection area when the coaxial light source 50 is turned on to perform appearance detection on the 3D surface to be inspected 21 of the product 2.
Referring to fig. 5, the appearance defect detecting apparatus 1 further includes a manipulator 91, where the manipulator 91 is configured to control the products 2 to perform matrix movement to switch into a detection area within a shooting range of the camera unit 20 when the camera unit 20 shoots an image of the 3D surface 21 to be detected.
Specifically, in the initial state, the detection area a1 of the 3D surface to be inspected 21 is within the shooting range of the imaging unit 20, the coaxial light source 50 is turned on, and the imaging unit 20 shoots an image of the detection area a 1. Then, the manipulator 91 controls the products 2 to move in a matrix manner in a clockwise direction, so that the detection areas B1-H1 are sequentially within the shooting range of the camera unit 20, and thus the camera unit 20 shoots eight images of the 3D surface to be inspected 21.
It should be noted that, when the manipulator 91 controls the product 2 to move, since the 3D surface 21 to be inspected has a certain radian, it is necessary to ensure that a normal tangent of the cambered surface is perpendicular to the camera unit 20 when detecting each detection area.
Further, the appearance defect detecting apparatus 1 further includes an analyzing unit 92 and a display unit 93. In this embodiment, the analysis unit 92 is a processor, and the display unit 93 is a display screen. The analysis unit 92 is configured to analyze the image captured by the image capturing unit 20 by using an appearance defect neural network algorithm function, so as to determine whether the captured 3D surface 21 to be detected has acid dripping, dirt, corrosion points, uneven dyeing, white points, scratches, material heterochromatism, or watermark defects. The display unit 93 is configured to display an appearance detection result obtained by the analysis of the analysis unit 92.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. An appearance flaw detection device is used for at least one of acid dripping, dirt, corrosion spots, uneven dyeing, white spots, material heterochrosis and watermark flaws on a to-be-detected 3D surface of the appearance of a productThe flaw detection method is characterized in that: the appearance flaw detection device comprises a support, a camera shooting unit, a light source support and a coaxial light source, wherein the camera shooting support and the light source support are arranged on the support, the camera shooting unit is arranged on the camera shooting support, the coaxial light source is arranged on the light source support, when a product to be detected is arranged on the appearance flaw detection device, a 3D surface to be detected of the product faces the camera shooting unit and the coaxial light source, and the distance between the camera shooting unit and the edge of the 3D surface to be detected is a first preset distance H1The distance between the coaxial light source and the edge of the 3D surface to be detected is a second preset distance H2The camera shooting unit is used for shooting the image of the 3D surface to be detected when the coaxial light source is started, wherein the first preset distance H1＝x*[(a+b)/2]The second preset distance H2＝y*[(a+b)/2]A is the product length and b is the product width, 1.8<x<2.2，0.1<y<0.2。
2. The visual defect detection device of claim 1, wherein: the 3D face of waiting to examine of product includes eight detection area, the unit of making a video recording is used for when coaxial light source opens shoot each detection area's image and right the 3D face of waiting to examine of product carries out outward appearance and detects.
3. The visual defect detection device of claim 2, wherein: outward appearance flaw detection device still includes the manipulator, the manipulator is used for the camera unit is shot when waiting to examine the image of 3D face, control the product carries out the matrix and removes in order to switch into the detection area of camera unit shooting scope.
4. The visual defect detection device of claim 1, wherein: the appearance flaw detection device further comprises a camera shooting adjusting support, wherein the camera shooting adjusting support is arranged on the support and fixedly connected with the camera shooting support and used for adjusting the position of the camera shooting unit so that the distance between the camera shooting unit and the edge of the 3D surface to be detected is the first preset distance.
5. The visual defect detection device of claim 4, wherein: the support includes two slide rails, it includes first sliding part, first locking part and connecting portion to adjust the support to make a video recording, the both ends of first sliding part are located respectively the cover on the slide rail, one end with first locking part meshing, first locking part is used for locking first sliding part, connecting portion with first sliding part reaches support fixed connection makes a video recording, works as when first locking part is by external force drive and rotates, first sliding part quilt first locking part drive and follow slide rail is from top to bottom to the adjustment the position of unit of making a video recording.
6. The visual defect detection device of claim 4, wherein: the camera shooting support comprises a fixing part and a fine adjustment part, the fixing part is used for fixing the camera shooting unit, and the fine adjustment part is used for accurately adjusting the position of the camera shooting unit.
7. The visual defect detection device of claim 5, wherein: the appearance flaw detection device further comprises a light source adjusting support, wherein the light source adjusting support is arranged on the support and fixedly connected with the coaxial light source and used for adjusting the position of the coaxial light source so that the distance between the coaxial light source and the edge of the 3D surface to be detected is the second preset distance.
8. The visual defect detection device of claim 7, wherein: the light source adjusting support comprises a second sliding portion and a second locking portion, two ends of the second sliding portion are respectively sleeved on the sliding rail, one end of the second sliding portion is meshed with the second locking portion, the light source support comprises two supporting portions which are respectively arranged on the second sliding portion, the coaxial light source is erected on the two supporting portions, and when the second locking portion is driven by external force to rotate, the second sliding portion is driven by the second locking portion to slide up and down along the sliding rail so as to adjust the position of the coaxial light source.
9. The visual defect detection device of claim 1, wherein: the appearance flaw detection device further comprises an analysis unit and a display unit, the analysis unit is used for analyzing the image shot by the camera unit by utilizing an appearance flaw neural network algorithm function so as to judge whether the shot 3D surface to be detected has acid dripping, dirt, corrosion points, uneven dyeing, white points, material heterochrosis or watermark flaws, and the display unit is used for displaying the appearance detection result obtained by the analysis of the analysis unit.
10. The visual defect detection device of claim 1, wherein: the focal length range of the camera unit is 33-37 mm, and the exposure time range is 4600 and 5400 mu s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921722260.4U CN211402165U (en) | 2019-10-14 | 2019-10-14 | Appearance flaw detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921722260.4U CN211402165U (en) | 2019-10-14 | 2019-10-14 | Appearance flaw detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211402165U true CN211402165U (en) | 2020-09-01 |
Family
ID=72215564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921722260.4U Active CN211402165U (en) | 2019-10-14 | 2019-10-14 | Appearance flaw detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211402165U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113699743A (en) * | 2021-09-15 | 2021-11-26 | 珠海格力电器股份有限公司 | Control method and control system of washing machine and washing machine |
-
2019
- 2019-10-14 CN CN201921722260.4U patent/CN211402165U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113699743A (en) * | 2021-09-15 | 2021-11-26 | 珠海格力电器股份有限公司 | Control method and control system of washing machine and washing machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109934821B (en) | Part defect detection method and system | |
| CN112730419B (en) | Appearance flaw detection device | |
| US7149341B2 (en) | Wafer inspection apparatus | |
| US7320237B2 (en) | Method for measuring misalignment of continuance mill and apparatus for measuring the same | |
| KR101284528B1 (en) | A measurement equipment and method for the crack inspect of gear rim | |
| CN106645197B (en) | Online detection system for detecting particles on surface of precision optical element and application method | |
| CN107764834B (en) | Device for automatically detecting surface defects of transparent part and detection method thereof | |
| US20060203229A1 (en) | Method and apparatus for inspecting defect in surface of metal roll | |
| JP4739044B2 (en) | Appearance inspection device | |
| CN111610190B (en) | Appearance inspection device for household appliances | |
| US6501546B1 (en) | Inspection system for edges of glass | |
| JP2010048602A (en) | Printed board inspection device and printed board inspection method | |
| KR20090022419A (en) | Textile fabrics examination method and the device | |
| CN211402165U (en) | Appearance flaw detection device | |
| CN112730421B (en) | Appearance flaw detection device | |
| CN208255087U (en) | Roll dressing surface cleaning and Machine Vision Inspecting System | |
| CN112730420B (en) | Appearance flaw detection workstation | |
| CN211374539U (en) | Appearance flaw detection device | |
| JPH07243831A (en) | Method and device for automatically testing spinneret | |
| CN214066962U (en) | Part detection device based on machine vision | |
| CN114689612A (en) | Automatic defect detection device for 3D mobile phone glass cover plate | |
| JP2010523958A (en) | Residual oxide detection and classification device in metal plate production line | |
| CN115254680A (en) | Automatic foreign matter detection equipment for display screen | |
| CN113640303A (en) | Surface flaw detection equipment for notebook computer and detection method thereof | |
| CN112782184A (en) | Part detection device based on machine vision |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |