CN211905129U - Dispensing detection device - Google Patents
Dispensing detection device Download PDFInfo
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- CN211905129U CN211905129U CN201921691864.7U CN201921691864U CN211905129U CN 211905129 U CN211905129 U CN 211905129U CN 201921691864 U CN201921691864 U CN 201921691864U CN 211905129 U CN211905129 U CN 211905129U
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Abstract
The utility model discloses a dispensing detection device, including workstation, camera shooting mechanism and side light projector mechanism, camera shooting mechanism includes that the first support frame, camera shooting device, camera lens and the interval that set up in the workstation vertically set up in the annular light source of camera lens below, camera shooting device, camera lens, annular light source coaxial arrangement and lie in and wait to detect the screen directly over; the side light projector constructs including second support frame, bar light source and the electronic slip table that is used for adjusting light source incident angle, and the bar light source is fixed in the side of workstation through electronic slip table, and the adjustable bar light source of electronic slip table rotates in order to change incident light source angle. Through the different images that detect glue on the screen respectively with the combination of annular light source and bar light source in this scheme: and (3) vertically irradiating the glue by using an annular light source to obtain a clear image of the glue boundary, obliquely irradiating the glue by using a strip-shaped light source and adjusting the incident angle by using an electric sliding table to obtain a clear image of the glue surface. The adjusting mode is simple and flexible, and false detection and missing detection can be effectively reduced.
Description
Technical Field
The utility model belongs to the check out test set field is glued to the screen point, and detection device is glued to concretely relates to point.
Background
With the rapid development of science and technology, many electronic products have become essential products in daily life and work, such as mobile phones, computers, etc., wherein many industries such as mobile phone cameras, notebook screens, solar cells, PCB boards, etc. need to use dispensing for bonding or packaging, generally, a dispenser is used for completing the work, and the detection of dispensing effect needs to be assisted by machine vision. By selecting appropriate hardware, such as industrial cameras, lenses, light sources, etc. with specific resolution, a clear image of the glue surface is acquired using a specific lighting scheme, such as bright field illumination, dark field illumination, structured light, etc., and the image is then processed using a visual open source library or commercial software. Among them, whether a clear image of the feature can be acquired is a key of visual inspection.
Common glue dispensing defects comprise wire drawing, air bubbles, scratches, dirt, glue breaking, uneven glue width and the like, different polishing schemes are required to be adopted for different defects, and coaxial light or annular light is usually adopted for polishing for detecting the wire drawing, the glue breaking and the glue width so as to obtain a clear boundary of the glue; detecting bubbles, scratches and stains requires polishing with a strip light in order to illuminate the features of the glue surface. Because the shape of the surface of the glue is irregular and the return lights at different positions are inconsistent, the selection of the polishing angle is very important. In order to solve the problem of the polishing angle, two schemes are generally adopted, namely, a camera and a light source are relatively fixed, and the directions of the camera and the light source are adjusted to shoot glue from different angles; secondly, the camera is fixed and a customized light source, such as a quadrilateral diffuse light source, is used to make light incident from multiple directions.
Wherein for the first mode: the glue is shot from different angles by adjusting the directions of the camera and the light source, and the main problems of the scheme are as follows: occupies a large space, and the change of the camera vision field affects external parameters and is not beneficial to quantitative analysis (such as detecting the width of glue).
For the second approach: the main problems with this solution are that the customized light source is used to make the light incident from multiple directions: the price is high, and simultaneously, the product is difficult to be applied to all products, and when the shape of the surface of the glue is changed, the polishing effect is greatly reduced.
SUMMERY OF THE UTILITY MODEL
In order to overcome prior art not enough, the utility model aims to provide a detection device is glued to point, including being used for placing the workstation of waiting to detect the screen, being used for the collection to detect the mechanism of making a video recording of screen image and being used for waiting to detect the side mechanism of throwing light of screen side. Through the different images that detect glue on the screen respectively with the combination of annular light source and bar light source in this scheme: and (3) vertically irradiating the glue by using an annular light source to obtain a clear image of the glue boundary, obliquely irradiating the glue by using a strip-shaped light source and adjusting the incident angle by using an electric sliding table to obtain a clear image of the glue surface. And the use of the electric sliding table enables the polishing to be more flexible, and the false detection and the missing detection can be effectively reduced.
The purpose of the utility model is realized by adopting the following technical scheme:
the dispensing detection device comprises
The workbench is used for placing a screen to be detected;
the camera shooting mechanism is used for collecting a screen image to be detected and comprises a first support frame vertically arranged on the workbench, a camera shooting device arranged at the top of the support frame, a lens matched with the camera shooting device and an annular light source arranged below the lens at intervals, and the camera shooting device, the lens and the annular light source are coaxially arranged and are positioned right above the screen to be detected;
side light projector constructs for wait to detect screen side light projector, side light projector constructs including set up perpendicularly in the second support frame of mechanism one side of making a video recording, set up in the bar light source at second support frame top and be used for adjusting the electronic slip table of bar light source's light source incident angle, the bar light source passes through electronic slip table is fixed in the side of workstation, electronic slip table is adjustable bar light source rotates in order to change incident light source angle.
Furthermore, the angle formed by the adjustable incident light source of the electric sliding table and the working surface ranges from 10 degrees to 80 degrees.
Furthermore, the annular light source is fixed below the lens at intervals through a mounting plate, and the mounting plate is vertically fixed on the first support frame.
Further, the lens is an industrial lens.
Further, the lens is any one of an FA lens or a megapixel telecentric lens.
Further, the image pickup device is an industrial camera.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses a dispensing detection device, including the workstation that is used for placing the screen to be detected, be used for gathering the camera shooting mechanism of the screen image to be detected and be used for the side mechanism of throwing light for the side of the screen to be detected, camera shooting mechanism includes the first support frame that sets up perpendicularly in the workstation, set up in the camera shooting device at the support frame top, with the camera lens of camera shooting device adaptation and the annular light source that the interval set up in the camera lens below, camera shooting device, camera lens, annular light source coaxial setting just are located the screen to be detected directly over; the side light projecting mechanism comprises a second support frame vertically arranged on one side of the camera shooting mechanism, a bar-shaped light source arranged on the top of the second support frame and an electric sliding table used for adjusting the incident angle of the light source of the bar-shaped light source, the bar-shaped light source is fixed on the side of the workbench through the electric sliding table, and the electric sliding table can adjust the bar-shaped light source to rotate so as to change the incident light source angle. Through the different images that detect glue on the screen respectively with the combination of annular light source and bar light source in this scheme: and (3) vertically irradiating the glue by using an annular light source to obtain a clear image of the glue boundary, obliquely irradiating the glue by using a strip-shaped light source and adjusting the incident angle by using an electric sliding table to obtain a clear image of the glue surface. And the use of the electric sliding table enables the polishing to be more flexible, and the false detection and the missing detection can be effectively reduced.
Drawings
Fig. 1 is a schematic structural view of the preferred embodiment of the dispensing detection device of the present invention.
In the figure: 1. a dispensing detection device; 2. a work table; 3. a camera mechanism; 31. a first support frame; 32. a camera device; 33. a lens; 34. an annular light source; 4. a side light projecting mechanism; 41. a second support frame; 42. a strip light source; 43. an electric sliding table; 5. and (5) detecting the screen to be detected.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.
The utility model discloses detection device is glued to point 1 is shown as figure 1, including being used for placing the workstation 2 that waits to detect screen 5, being used for the collection to wait to detect camera mechanism 3 of screen 5 image and being used for waiting to detect side light casting mechanism 4 of 5 side light castings of screen. In this scheme, different images of glue on the screen are detected by combining the annular light source 34 and the bar-shaped light source 42 respectively: the glue is vertically irradiated by the annular light source 34 to obtain a clear image of the glue boundary, and the strip-shaped light source 42 is used for obliquely irradiating the glue and adjusting the incident angle through the electric sliding table 43 to obtain a clear image of the glue surface. And the use of the electric sliding table 43 makes the polishing simpler and more flexible, and can effectively reduce false detection and missed detection.
The camera shooting mechanism 3 in this embodiment includes a first support frame 31 vertically arranged on the workbench 2, a camera shooting device 32 arranged on the top of the support frame, a lens 33 adapted to the camera shooting device 32, and an annular light source 34 arranged below the lens 33 at intervals, wherein the camera shooting device 32, the lens 33, and the annular light source 34 are coaxially arranged and are positioned right above the screen 5 to be detected. The annular light source 34 is vertically arranged right above the screen to be measured, vertically irradiates the screen, and at the moment, the image of the screen glue boundary can be obtained by shooting with the camera device 32, so that image acquisition at an angle is completed. The annular light source 34 is fixed below the lens 33 at intervals by a mounting plate, and the mounting plate is vertically fixed on the first support frame 31. The annular light source 34 is ensured to be parallel to the lens 33 and arranged at an interval below the lens 33. The annular light source 34 may be replaced with a coaxial light source or a dome light source.
Preferably, the image capturing device 32 is an industrial camera with 500 ten thousand pixels. Industrial cameras are a key component in machine vision systems, and their most essential function is to convert light signals into ordered electrical signals. The lens 33 is an industrial lens 33, and the lens 33 is either an FA lens 33 or a megapixel telecentric lens 33. The industrial lens 33 is also a key component in the machine vision system, and its basic function is to realize the light beam transformation (modulation) and the imaging of the screen to be measured on the photosensitive surface of the image sensor.
In this embodiment, the side light projecting mechanism 4 includes a second support frame 41 vertically disposed on one side of the camera shooting mechanism 3, a bar-shaped light source 42 disposed on the top of the second support frame 41, and an electric sliding table 43 for adjusting the light source incidence angle of the bar-shaped light source 42, the bar-shaped light source 42 is fixed on the side of the workbench through the electric sliding table 43, and the electric sliding table 43 can adjust the rotation of the bar-shaped light source 42 to change the incidence light source angle. Preferably, the angle formed by the adjustable incident light source and the working surface of the electric sliding table 43 ranges from 10 ° to 80 °.
When the image acquisition of the screen glue to be detected is carried out, firstly, the industrial camera and the annular light source 34 are respectively electrified, the exposure time of the camera is adjusted, the image is not too dark or too exposed, then, the screen 5 to be detected is placed on the detection station on the workbench 2, and at the moment, the image acquisition is carried out, and the glue boundary image of the screen is obtained.
Because a clear image of the whole glue surface cannot be obtained at one time, the method is divided into two times of photographing. After the glue boundary image of the screen is acquired, the strip-shaped light source 42 is electrified, the exposure time of the camera is adjusted, the angle of the strip-shaped light source 42 is adjusted by using the electric sliding table 43, the included angle theta 1 between the angle projected by the head of the strip-shaped light source 42 and the plane of the workbench 2 is approximately equal to 75 degrees, the surface characteristics of the upper half part of the glue are clear and visible, the image acquisition is carried out at the moment, and the partial image on the glue surface of the screen is obtained. And then, the angle of the strip-shaped light source 42 is adjusted by using the electric sliding table 43 again, so that the included angle between the angle projected by the head of the strip-shaped light source 42 and the plane of the workbench 2 is theta 2 ≈ 30 degrees, the surface characteristics of the lower half part of the glue are clearly visible, and at the moment, image acquisition is carried out to obtain the image of the part below the surface of the glue on the screen. And finally, importing the three images into commercial software (such as halcon) for processing, and respectively detecting the defects of glue width, glue breaking, air bubbles, dirt and the like to obtain whether the glue dispensing condition on the screen meets the specification or not.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (6)
1. Dispensing detection device, its characterized in that: comprises that
The workbench is used for placing a screen to be detected;
the camera shooting mechanism is used for collecting a screen image to be detected and comprises a first support frame vertically arranged on the workbench, a camera shooting device arranged at the top of the support frame, a lens matched with the camera shooting device and an annular light source arranged below the lens at intervals, and the camera shooting device, the lens and the annular light source are coaxially arranged and are positioned right above the screen to be detected;
side light projector constructs for wait to detect screen side light projector, side light projector constructs including set up perpendicularly in the second support frame of mechanism one side of making a video recording, set up in the bar light source at second support frame top and be used for adjusting the electronic slip table of bar light source's light source incident angle, the bar light source passes through electronic slip table is fixed in the side of workstation, electronic slip table is adjustable bar light source rotates in order to change incident light source angle.
2. The dispensing detection device of claim 1, wherein: the angle formed by the adjustable incident light source of the electric sliding table and the working surface ranges from 10 degrees to 80 degrees.
3. The dispensing detection device of claim 1, wherein: the annular light source is fixed below the lens at intervals through the mounting plate, and the mounting plate is vertically fixed on the first support frame.
4. The dispensing detection device of claim 1, wherein: the lens is an industrial lens.
5. The dispensing detection device of claim 1, wherein: the lens is any one of an FA lens or a megapixel telecentric lens.
6. The dispensing detection device of claim 1, wherein: the camera device is an industrial camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921691864.7U CN211905129U (en) | 2019-10-10 | 2019-10-10 | Dispensing detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921691864.7U CN211905129U (en) | 2019-10-10 | 2019-10-10 | Dispensing detection device |
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| Publication Number | Publication Date |
|---|---|
| CN211905129U true CN211905129U (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921691864.7U Active CN211905129U (en) | 2019-10-10 | 2019-10-10 | Dispensing detection device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112903694A (en) * | 2021-01-18 | 2021-06-04 | 苏州华兴源创科技股份有限公司 | Flying shoot detection system and method |
| CN114034706A (en) * | 2021-10-29 | 2022-02-11 | 武汉理工大学 | Carbon fiber part surface defect detection device and method |
| CN114354494A (en) * | 2021-12-31 | 2022-04-15 | 苏州高视半导体技术有限公司 | LED semiconductor packaging glue dispensing defect detection device and detection method |
| CN114441553A (en) * | 2022-04-11 | 2022-05-06 | 深圳市鹰眼在线电子科技有限公司 | Mini LED detection structure with self-adjusting light source |
| CN115791804A (en) * | 2022-12-20 | 2023-03-14 | 中国航发贵州黎阳航空动力有限公司 | Stripe defect detection method for compressor blade |
-
2019
- 2019-10-10 CN CN201921691864.7U patent/CN211905129U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112903694A (en) * | 2021-01-18 | 2021-06-04 | 苏州华兴源创科技股份有限公司 | Flying shoot detection system and method |
| CN114034706A (en) * | 2021-10-29 | 2022-02-11 | 武汉理工大学 | Carbon fiber part surface defect detection device and method |
| CN114354494A (en) * | 2021-12-31 | 2022-04-15 | 苏州高视半导体技术有限公司 | LED semiconductor packaging glue dispensing defect detection device and detection method |
| CN114441553A (en) * | 2022-04-11 | 2022-05-06 | 深圳市鹰眼在线电子科技有限公司 | Mini LED detection structure with self-adjusting light source |
| CN114441553B (en) * | 2022-04-11 | 2022-07-12 | 深圳市鹰眼在线电子科技有限公司 | Mini LED detection structure with self-adjusting light source |
| CN115791804A (en) * | 2022-12-20 | 2023-03-14 | 中国航发贵州黎阳航空动力有限公司 | Stripe defect detection method for compressor blade |
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Address after: 519000 5th floor, building 3 (R & D building), No.5, Keji 8th Road, high tech Zone, Zhuhai City, Guangdong Province Patentee after: Changyuan semiconductor equipment (Zhuhai) Co.,Ltd. Address before: 519080 rooms 301 and 302, unit 1, 3rd floor, convention and Exhibition Center, No.1 Software Park Road, Tangjiawan Town, Zhuhai City, Guangdong Province Patentee before: Changyuan Qihua Intelligent Technology (Zhuhai) Co.,Ltd. |