CN219871071U - Detection system for low defect of plate edge sealing tape - Google Patents
Detection system for low defect of plate edge sealing tape Download PDFInfo
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- CN219871071U CN219871071U CN202321121358.0U CN202321121358U CN219871071U CN 219871071 U CN219871071 U CN 219871071U CN 202321121358 U CN202321121358 U CN 202321121358U CN 219871071 U CN219871071 U CN 219871071U
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- 230000007547 defect Effects 0.000 title claims abstract description 107
- 238000007789 sealing Methods 0.000 title claims abstract description 80
- 238000001514 detection method Methods 0.000 title claims abstract description 56
- 238000003384 imaging method Methods 0.000 claims abstract description 44
- 239000000463 material Substances 0.000 claims description 19
- 238000007689 inspection Methods 0.000 claims 2
- 239000003086 colorant Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 239000003292 glue Substances 0.000 description 7
- 238000009434 installation Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000011179 visual inspection Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The utility model provides a detection system for low defects of a plate sealing tape, which comprises the following components: the imaging module is vertically arranged above the plate to be tested; the conveying module is arranged below the plate to be tested; the word line laser can emit the line laser to polish the surface of the plate to be tested, and is obliquely arranged on one side of the plate to be tested, and the line laser and the plate to be tested are arranged at intervals. The detection system provided by the utility model utilizes the principle that the light path is deviated when the high-uniformity linear light source passes through the plate with low defect on the edge sealing belt, the imaging module can judge that the defect with low defect on the edge sealing belt exists only by capturing the deviation, the detection system does not need to clearly shoot the defect, and the characteristic display cannot be influenced when the whole picture is exposed, so that the problem that different plates have different requirements on the brightness of the light source is solved, and a large number of missed detection and false detection are avoided.
Description
Technical Field
The utility model relates to the field of machine vision detection, in particular to a detection system for low defects of a plate sealing band.
Background
The detection of the surface of the plate is an essential important link in the mass production of furniture. Traditional sheet surface defect detection is often finished manually, but manual detection is huge in workload and is easily influenced by subjective factors of detection personnel and objective factors of production environment. So that the efficiency and effect of the detection cannot be ensured. In particular, with the continuous improvement of the degree of automation of production, the conventional manual visual inspection cannot meet the high-speed production requirements of enterprises, and the demands of enterprises on machine visual inspection systems are becoming stronger.
The artificial laminated board is a main material of a customized furniture product, has rich colors and patterns, and has the defects of various shapes, different sizes, such as broken, glue spreading, glue overflow, short bands and the like, which are easily generated in the edge sealing process. The edge sealing tape is a common defect of a detection system for the low defect of the edge sealing tape of one of the plates, so that the appearance is influenced, the defect part is more prone to being wetted and absorbed, the product cabinet body is deformed, and the defect is required to be detected by a furniture plate manufacturer.
At present, the common plate visual detection system is mainly irradiated by an LED light source, and an image is acquired by an area-array camera lens. However, the board to be detected has more than 40 different colors and patterns, especially the difference of the gray values of the images collected by the boards of dark colors and light colors under the same optical system parameter is extremely large, when the defects of the dark colors board can be detected, the image collected by the light colors board is exposed, and if the collected image cannot obviously reflect the defect characteristics, a large number of missing detection and false detection conditions are easily caused, and the detection effect is seriously affected.
Meanwhile, the plate edge sealing detection system is usually installed on an edge sealing machine of a furniture manufacturer, various production devices can be usually installed on the edge sealing machine which is put into practical use, and the installation space for the edge sealing detection system is very limited. The defect that the detected edge sealing tape is low can only be shot by an area array camera which is horizontally arranged with the edge sealing tape of the plate, and the defect characteristics can not be displayed by pictures acquired by a camera which is perpendicular to the plate, so that one camera station needs to be additionally considered.
In view of this, the present utility model has been made.
Disclosure of Invention
The utility model aims at providing a detection system for low defects of a plate edge sealing belt, which aims to solve the problems that in the prior art, the plate visual detection system irradiates by adopting an LED light source, the difference of gray values of images acquired under the same optical system parameters of various colors and patterns of a plate to be detected is extremely large, the low defects of the edge sealing belt cannot be obviously reflected, a large number of detection omission and false detection conditions are easily caused, and the detection effect is seriously affected.
In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:
a system for detecting low defects of a plate edge banding strip, the system comprising:
the imaging module is used for collecting images of the plate to be tested and is vertically arranged above the plate to be tested;
the conveying module is used for conveying the plate to be detected and is arranged below the plate to be detected;
the word line laser can emit line laser to polish the surface of the plate to be tested, the word line laser is obliquely arranged on one side of the plate to be tested, and the word line laser and the plate to be tested are arranged at intervals.
According to the detection system for the plate edge sealing strip low defects, on one hand, the principle is utilized that the light path is deviated when a high-uniformity linear light source passes through the plate with the edge sealing strip low defects, the detection system can judge that the edge sealing strip low defects exist only by capturing the deviation, the defects do not need to be clearly shot, the characteristic display is not affected by the whole picture exposure, and therefore the problem that different plates have different requirements on the light source brightness is solved, and a large number of missed detection and false detection are avoided; on the other hand, the imaging module is vertically arranged above the plate to be detected, and normally, the area array camera of the imaging module at the position can detect the low defects of the edge sealing band and also detect the common plate defects such as the collapse, the glue opening and the like, so that the effect that one area array camera can detect a plurality of defects is achieved, the installation space is saved, the camera and the lens are saved, and the cost of the whole equipment is reduced.
Further, an included angle between the line laser emitted by the line laser and the first side edge of the upper surface of the plate to be detected is beta, and beta=90 degrees; and the included angle between the line laser emitted by the line laser and the first bottom edge of the side surface of the plate to be detected is alpha, and in the detection system of the low defect of the edge sealing belt of the plate to be detected, the minimum value of the height h of the low defect of the edge sealing belt of the plate to be detected is h min Low defect height minimum h min The corresponding offset length in the imaging module is d min ，tanα＝h min /d min 。
This arrangement facilitates the calculation of the height of the low defect in the edge-sealed tape.
Further, the imaging module comprises a camera and a lens, and the lens is installed below the camera.
Further, the detection system for the low defect of the plate edge banding belt is arranged on the edge banding machine.
Further, the imaging module is vertically arranged right above the plate to be detected.
Further, the imaging module and the plate to be tested are arranged at intervals.
Further, the camera is an area array camera.
Further, the conveying module is arranged right below the plate to be detected.
Further, the word line laser is obliquely arranged above one side of the plate to be tested.
Further, a conveyor belt is installed on the conveying module.
Compared with the prior art, the detection system for the low defect of the plate edge sealing band has the following beneficial effects:
1) The utility model relates to a detection system for detecting low defects of a plate edge sealing strip, which utilizes the linear laser of a linear laser to detect the defect of low edge sealing strip, and utilizes the principle that a light path can deviate when a high uniform linear light source passes through the plate with low defects of the edge sealing strip, an imaging module can judge that the low defects of the edge sealing strip exist only by capturing the deviation, the detection system does not need to clearly shoot the defects, and the integral picture exposure does not influence the characteristic display, thereby solving the problem that different plates have different requirements on the brightness of the light source and further avoiding a large number of missed detection and false detection.
2) According to the detection system for the low defects of the edge sealing bands of the plates, the imaging module is vertically arranged right above the plates to be detected, and normally, the area array camera of the imaging module at the position can detect the low defects of the edge sealing bands and detect common plate defects such as breakage, glue opening and the like, so that the effect that the position of one area array camera can detect a plurality of defects is achieved, the installation space is saved, the camera and the lens are saved, and the cost of the whole equipment is reduced.
Drawings
FIG. 1 is a schematic diagram of a system for detecting a low defect on a tape of a board according to an embodiment of the present utility model;
FIG. 2 is a second schematic diagram of a system for detecting a low defect on a tape of a board according to an embodiment of the utility model;
FIG. 3 is a schematic diagram of a detection light path of a word line laser of a system for detecting low defects in a plate edge sealing band according to an embodiment of the present utility model;
fig. 4 is a schematic optical principle diagram of an imaging module of a system for detecting a low defect on a plate edge sealing tape according to an embodiment of the present utility model.
Reference numerals illustrate:
1. an imaging module; 11. a camera; 12. a lens; 2. a conveying module; 3. a word line laser; 31. a first line laser; 32. a second line laser; 4. a board to be tested; 41. the upper surface of the plate; 411. a first side; 42. the side surface of the plate; 421. a first bottom edge; 5. a tape; 51. a first tape; 52. a second tape.
Detailed Description
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The description of "first," "second," etc. in embodiments of the present utility model is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
The utility model will be described in detail below with reference to the drawings in connection with embodiments.
Example 1
As shown in fig. 1 to 4, the present embodiment provides a system for detecting a low defect of a sealing tape of a sheet material, as shown in fig. 1 and 2, the system for detecting a low defect of a sealing tape of a sheet material includes:
the imaging module 1 is used for collecting images of the plate 4 to be tested, and the imaging module 1 is vertically arranged above the plate 4 to be tested;
the conveying module 2 is used for conveying the plate 4 to be tested, and the conveying module 2 is arranged below the plate 4 to be tested; the conveying module 2 can drive the sheet material 4 to be tested to move in a specific direction;
the word line laser 3, the line laser 3 can emit a line laser to polish the surface of the plate 4 to be tested, the line laser 3 is obliquely arranged on one side of the plate 4 to be tested, and the line laser 3 and the plate 4 to be tested are arranged at intervals.
The detection system for the low defects of the edge sealing bands of the plates utilizes the principle that the light path is deviated when a high-uniformity linear light source passes through the plates with the low defects of the edge sealing bands, the imaging module 1 can judge that the low defects of the edge sealing bands 5 exist only by capturing the deviation, the detection system does not need to clearly shoot the defects, the integral picture exposure does not influence the characteristic display, and the indiscriminate imaging can be carried out on the poor defects of the low defects of the edge sealing bands 5 of the plates with various colors and patterns, so that the problem that different plates have different requirements on the brightness of the light source is solved, and a large number of missed detection and false detection are avoided; the imaging module 1 is vertically arranged above the board 4 to be tested, and the camera 11 of the imaging module 1 at the position can detect the low defects of the edge sealing tape 5 and detect common board defects such as breakage, glue opening and the like, so that the effect that a plurality of defects can be detected by one camera 11 can be achieved, the installation space is saved, the camera 11 and the lens 12 can be saved, and the cost of the whole equipment is reduced.
More specifically, the word line laser 3 is disposed obliquely above one side of the board 4 to be tested.
Regarding the conveying module 2, in view of the specific structure and specific assembly relationship of the related components thereof, they are all of the prior art, and will not be described herein.
The specific structure and specific assembly relation of the related components of the word line laser 3 are all the prior art, and will not be described herein.
More specifically, as shown in fig. 1 and fig. 2, the conveying module 2 drives the board 4 to be tested to move forward and backward; the word line laser 3 is obliquely arranged on the left side of the plate 4 to be tested, and the word line laser 3 is obliquely arranged above the left side of the plate 4 to be tested.
Specifically, the interval between the word line laser 3 and the board to be tested 4 is not specifically limited.
Specifically, as shown in fig. 3, the angle between the line laser emitted by the line laser 3 and the first side 411 of the upper surface 41 of the board 4 to be tested is β, β=90°; and the angle between the line laser emitted by the line laser 3 and the first bottom edge 421 of the board side 42 of the board 4 to be tested is α, and in the system for detecting low defect of the board edge banding band, the minimum value of the height h of the low defect of the edge banding band 5 of the board 4 to be tested is h min Low defect height minimum h min The minimum value of the corresponding offset length in the imaging module 1 is d min ，tanα＝h min /d min 。
This arrangement facilitates the calculation of the height of the low defect of the tape 5.
Specifically, as shown in fig. 1, the imaging module 1 includes a camera 11 and a lens 12, and the lens 12 is mounted below the camera 11.
Specifically, the camera 11 is an area camera.
The imaging module 1 includes other relevant components besides the camera 11 and the lens 12, and the specific structure and specific assembly relationship of the relevant components are all the prior art, which is not described herein.
More specifically, the detection system for the low defect of the plate edge banding belt is arranged on an edge banding machine.
More specifically, as shown in fig. 2, the imaging module 1 is disposed vertically right above the board 4 to be measured.
The imaging module 1 is vertically arranged right above the plate 4 to be detected, and normally, the area array camera 11 of the imaging module 1 at the position can detect the low defects of the edge sealing belt 5 and detect common plate defects such as breakage, glue opening and the like, so that the effect that a plurality of defects can be detected by one area array camera 11 can be achieved, the installation space is saved, the area array camera 11 and the lens 12 can be saved, and the cost of the whole equipment is reduced.
More specifically, as shown in fig. 2, the imaging module 1 is disposed at a distance from the board to be measured 4. The interval between the imaging module 1 and the board 4 to be measured is not particularly limited.
More specifically, as shown in fig. 2, the conveying module 2 is disposed directly below the sheet material 4 to be measured.
More specifically, as shown in fig. 1, a conveyor belt is mounted on the conveying module 2.
Before the detection of the detection system for the plate edge sealing strip low defects, the method for determining the incidence angle alpha of the detection system for the plate edge sealing strip low defects in the embodiment calculates the incidence angle alpha: it is known that a minimum value h of defect height at which defects are detectable needs to be low in the tape 5 min The offset length d can be calculated according to the pixel equivalent of the imaging module 1 which is actually used and the pixel number which can be used for distinguishing offset in the imaging image min ，d min Offset by pixel number, h min 、d min Substituting h=d×tan α can infer that the angle between the outgoing laser light and the first bottom edge 421 of the board side 42 of the board 4 to be tested is α, so as to determine the installation position of the word line laser 3. The smaller the angle α, the more pronounced the offset length.
And then installing a word line laser 3, and finally starting to detect whether the plate 4 to be detected has the low defect of the edge sealing band 5, and if the plate 4 to be detected has the low defect of the edge sealing band 5, calculating the height h of the low defect of the edge sealing band 5.
The working principle of the detection system for the low defect of the plate sealing tape in the embodiment is as follows: as shown in fig. 3, the edge sealing band 5 includes a first edge sealing band 51 and a second edge sealing band 52, where the first edge sealing band 51 is a normal edge sealing band, and the second edge sealing band 52 is a low defect edge sealing band, as shown in fig. 4, if the edge sealing band 5 of the board 4 to be tested is normal, that is, the first edge sealing band 51 in fig. 3, and the first edge sealing band 51 corresponds to the first line laser 31, the image presented by the first line laser 31 in the imaging module 1 is linear, and no offset exists; if the edge sealing tape 5 of the sheet material 4 to be tested has a low defect with a height h, that is, the second edge sealing tape 52 in fig. 3, and the second edge sealing tape 52 corresponds to the second line laser 32, the image represented by the second line laser 32 in the imaging module 1 shifts at the second edge sealing tape 52 by a length d.
The offset length d, d=pixel equivalent, which can be calculated by the offset pixel number and pixel equivalent of the imaging module 1, in the detection system for detecting the low defect of the edge sealing strip of the sheet material according to the embodiment, the incident angle α is a known fixed value, and if the edge sealing strip 5 of the sheet material 4 to be detected has a low defect, the height of the low defect of the edge sealing strip 5 is h, the height of the low defect of the edge sealing strip 5 can be obtained by a calculation formula of h=d×tan α.
Assuming that customers need edge bands 5 with the thickness of more than 0.5mm to be detected, the minimum value of the height of the low defects of the edge bands 5 of the sheet material 4 to be detected is h min The equivalent of pixels of the imaging module 1 is 39 μm, and the displacement length d can be distinguished if 6 pixels are required in the image min The offset pixel number is 6, d min When=equivalent amount of offset pixels=6x39=234 um, tan α=h min /d min =500/234, α=64.92°, and the angle α between the line laser light emitted from the line laser 3 and the first bottom edge 421 of the board side 42 of the board 4 to be tested is 64.92 °.
Then, the sheet material 4 to be detected is detected by using the sheet material edge sealing strip low defect detection system described in this embodiment, and if the offset length d=equivalent×offset pixel number=8×50=400 um is detected, the height of the edge sealing strip 5 low defect is h=d×tan α=400×tan (64.92 °) = 854.69um.
The detection system for the low defects of the edge sealing bands of the plates utilizes the principle that the light path is deviated when a high-uniformity linear light source passes through the plates with the low defects of the edge sealing bands, the imaging module 1 can judge that the low defects of the edge sealing bands 5 exist only by capturing the deviation, the detection system does not need to clearly shoot the defects, the whole picture exposure does not influence the characteristic display, and the indiscriminate imaging can be carried out on the poor defects of the low defects of the edge sealing bands 5 of the plates with various colors and patterns, so that the problem that different plates have different requirements on the brightness of the light source is solved, and a large number of missed detection and false detection are avoided; the imaging module 1 is vertically arranged right above the plate 4 to be detected, and normally, the area array camera 11 of the imaging module 1 at the position can detect the low defects of the edge sealing belt 5 and detect common plate defects such as breakage, glue opening and the like, so that the effect that a plurality of defects can be detected by one area array camera 11 can be achieved, the installation space is saved, the area array camera 11 and the lens 12 can be saved, and the cost of the whole equipment is reduced.
Although the present utility model is disclosed above, the present utility model is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model, and the scope of the utility model should be assessed accordingly to that of the appended claims.
Claims (10)
1. The utility model provides a detecting system of sheet material banding area low defect which characterized in that, sheet material banding area low defect's detecting system includes:
the imaging module (1) is used for collecting images of the plate (4) to be detected, and the imaging module (1) is vertically arranged above the plate (4) to be detected;
the conveying module (2) is used for conveying the plate (4) to be tested, and the conveying module (2) is arranged below the plate (4) to be tested;
the word line laser (3), the surface of a word line laser to be measured panel (4) can be launched out by the word line laser (3), the slope of word line laser (3) sets up one side of panel (4) to be measured, word line laser (3) with panel (4) interval setting to be measured.
2. The system for detecting the low defect of the edge sealing strip of the plate according to claim 1, wherein an included angle between the line laser emitted by the line laser (3) and the first side edge (411) of the upper surface (41) of the plate (4) to be detected is beta, and beta=90°; and the included angle between the line laser emitted by the line laser (3) and the first bottom edge (421) of the side surface (42) of the plate (4) to be detected is alpha, and in the detection system of the low defect of the edge sealing strip of the plate (4), the minimum value of the height h of the low defect of the edge sealing strip (5) of the plate (4) to be detected is h min Low defect height minimum h min Corresponding offset length in imaging module (1)Degree of d min ，tanα＝h min /d min 。
3. A sheet material edge sealing strip low defect detection system according to claim 2, characterized in that the imaging module (1) comprises a camera (11) and a lens (12), the lens (12) being mounted below the camera (11).
4. A sheet material edge banding low defect inspection system according to claim 3 wherein said sheet material edge banding low defect inspection system is mounted on an edge banding machine.
5. The system for detecting the low defect of the plate edge sealing tape according to claim 4, wherein the imaging module (1) is vertically arranged right above the plate (4) to be detected.
6. The system for detecting the low defect of the plate sealing tape according to claim 5, wherein the imaging module (1) is arranged at intervals from the plate (4) to be detected.
7. A system for detecting low defects on a panel edge sealing strip according to claim 6, wherein said camera (11) is an area array camera.
8. The system for detecting the low defect of the edge sealing tape of the plate material according to claim 7, wherein the conveying module (2) is arranged right below the plate material (4) to be detected.
9. A system for detecting low defects on a board edge sealing strip according to claim 8, wherein said one word line laser (3) is obliquely arranged above one side of said board (4) under test.
10. A system for detecting low defects on a strip of material according to claim 9, characterized in that a conveyor belt is mounted on said conveyor module (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321121358.0U CN219871071U (en) | 2023-05-11 | 2023-05-11 | Detection system for low defect of plate edge sealing tape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321121358.0U CN219871071U (en) | 2023-05-11 | 2023-05-11 | Detection system for low defect of plate edge sealing tape |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219871071U true CN219871071U (en) | 2023-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321121358.0U Active CN219871071U (en) | 2023-05-11 | 2023-05-11 | Detection system for low defect of plate edge sealing tape |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219871071U (en) |
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2023
- 2023-05-11 CN CN202321121358.0U patent/CN219871071U/en active Active
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Effective date of registration: 20240220 Address after: Room 101 and Room 202, Building 5, Luoyang National University Science and Technology Park, No. 2 Penglai Road, Jianxi District, Luoyang Free Trade Zone, Henan Province, China, 471033 Patentee after: CASI VISION TECHNOLOGY (LUOYANG) CO.,LTD. Country or region after: China Address before: Room 10718, Building D, City Gate, No.1 Jinye Road, High tech Zone, Xi'an City, Shaanxi Province, 710076 Patentee before: Xi'an Zhongke Huiyuan Vision Technology Co.,Ltd. Country or region before: China |
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