CN221782134U - A bottle capping defect visual inspection image acquisition structure - Google Patents
A bottle capping defect visual inspection image acquisition structure Download PDFInfo
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- CN221782134U CN221782134U CN202420007272.3U CN202420007272U CN221782134U CN 221782134 U CN221782134 U CN 221782134U CN 202420007272 U CN202420007272 U CN 202420007272U CN 221782134 U CN221782134 U CN 221782134U
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- bottle cap
- image acquisition
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- bottle
- cameras
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- 230000007547 defect Effects 0.000 title claims abstract description 26
- 238000011179 visual inspection Methods 0.000 title claims description 6
- 238000001514 detection method Methods 0.000 claims abstract description 28
- 238000005286 illumination Methods 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 230000000007 visual effect Effects 0.000 claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 abstract description 9
- 238000005498 polishing Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 238000009924 canning Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 235000013361 beverage Nutrition 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
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- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The application provides a visual detection image acquisition structure for bottle cap sealing defects, which comprises the following steps: the conveying unit is used for clamping and moving the bottle body; the illumination unit is positioned below the conveying path of the conveying unit and irradiates light upwards; the image acquisition unit comprises at least three cameras, the camera is horizontally arranged around the illumination unit, the lens faces the central shaft around the camera, the central angle between the adjacent cameras is not more than 120 degrees, and the position of the camera is higher than that of the conveying unit. The image acquisition structure can polish from the bottle bottom to the inside of the bottle cap, so that the inside and outside of the bottle cap have obvious brightness difference, further the camera can clearly shoot the light transmission condition around the bottle cap, and judge whether the bottle cap has defects or not, and the detection precision is improved. In addition, the application adopts a multi-camera to shoot images and acquires the complete image of the side face of the bottle cap in a splicing and de-duplication mode, thereby avoiding the shielding problem at the front and rear bridging positions during unidirectional or forward and backward shooting.
Description
Technical Field
The utility model relates to the technical field of bottle cap sealing cover detection, in particular to a bottle cap sealing cover defect visual detection image acquisition structure.
Background
In enterprises such as wine, beverage, etc., can cover the bottle lid on the bottle neck after the canning is finished on the canning production line to seal the bottle, the leakproofness of finished product is directly influenced to the good or bad of bottle lid, also is an important index of judging whether the finished product is qualified, consequently the manufacturing enterprise still can increase the process to bottle lid closing defect detection after the closing cap.
In the prior art, the defect detection of the bottle cap sealing cover of the transparent or semitransparent bottle body generally adopts a method of polishing by a single back light source, polishing by a single front light source or a combination of two polishing modes to detect the bottle cap. However, if a single front light source is used for polishing, when the color of the damaged part is similar to that of the bottle cap, the damaged defect is not easy to find, and the identification degree is not good; if a single back light source is used for polishing, the bottle cap is round, and the front and back bridging parts are shielded, so that a polishing blind area exists, the detection precision is affected, and the detection omission risk exists. Even if the detection is performed by a method of combining two lighting methods, the above-described problems cannot be solved.
Disclosure of utility model
In order to solve the technical problems in the background art, the utility model provides a visual detection image acquisition structure for bottle cap capping defects.
The technical scheme of the utility model is as follows:
a bottle cap closure defect visual inspection image acquisition structure, comprising:
the conveying unit is used for clamping and moving the bottle body;
the illumination unit is positioned below the conveying path of the conveying unit and irradiates light upwards;
The image acquisition unit comprises at least three cameras, the camera is horizontally arranged around the illumination unit, the lens faces the central shaft around the camera, the central angle between the adjacent cameras is not more than 120 degrees, and the position of the camera is higher than that of the conveying unit.
When the bottle is detected, the conveying unit enables the bottle body to move in a suspended mode, and when the bottle body moves to the position above the illumination unit, the illumination unit is started to irradiate light to the bottom of the bottle, and the light irradiates the inside of the bottle cover through the bottom of the bottle. Simultaneously, at least three cameras are started to shoot the image of the bottle cap, and the complete image of the bottle cap is obtained by splicing and de-duplicating the images shot by the cameras.
The environment light of the detection station is dark, and the bottle cap is illuminated, so that the light transmission condition of the bottle cap can be clearly observed around the bottle cap, and whether the bottle cap is broken or not is judged according to the brightness and the form of the highlighted light transmission area.
In the above-mentioned scheme, the conveying unit includes two conveyer belt mechanisms that the level set up side by side, can the centre gripping and horizontal migration bottle between two conveyer belt mechanisms. One end of each of the two conveying belt mechanisms is provided with a driving motor which can drive the two conveying belt mechanisms to rotate at the same rotating speed
Further, the illumination unit is located directly below the nip between the two conveyor mechanisms.
Preferably, the illumination unit is a ring light source to uniformly illuminate the bottle bottom, and the ring light source is started when the bottle body to be detected moves to the center of the ring light source.
In the application, the central angles between adjacent cameras are equal, and further, the distances between each camera and the central axis around which the cameras surround are equal.
Therefore, the proportion of bottle caps in the images shot by the cameras is the same, the sizes of the overlapping areas on the images shot by the cameras are the same, and when the images are spliced, the duplicate removal and shearing can be performed in a uniform proportion, so that an image processing program is convenient to design.
In the application, the image acquisition unit preferably comprises four cameras, and the four cameras are arranged at 90-degree included angles in the horizontal plane, so that the placement of the cameras is convenient, and the images of the right opposite sides of the bottle cap can be acquired as much as possible, thereby ensuring more accurate detection.
In the scheme, four cameras are respectively arranged on two sides of the conveying unit in a group.
In addition, the image acquisition unit further comprises a support, the camera is installed on the support, and the support can stably support the camera, so that the camera can clearly shoot images.
In the application, the height of the camera on the bracket is adjustable. The height of the camera can be adjusted according to different sizes of the detection bottle bodies, so that the camera and the detected bottle cap can be located at the same height.
According to the bottle cap cover defect visual detection image acquisition structure, the bottle bottom is polished into the bottle cap to replace the existing bottle cap polishing, so that a camera can shoot in a relatively dark environment, the light transmission condition around the bottle cap can be clearly shot by the camera due to the brightness difference between the inside and the outside of the bottle cap, and whether the bottle cap is a broken cap (broken ring or broken bridge) defect is judged according to the brightness and the shape of a high-brightness light transmission area, so that the detection precision is improved.
In addition, the application adopts a multi-camera to shoot images and acquires the complete image of the side face of the bottle cap in a splicing and de-duplication mode, thereby avoiding the shielding problem at the front and rear bridging positions during unidirectional or forward and backward shooting.
Drawings
In the drawings:
FIG. 1 is a schematic front view of an image acquisition structure;
fig. 2 is a schematic top view of an image acquisition structure.
The components represented by the reference numerals in the figures are:
1. A conveying unit; 11. a conveyor belt mechanism; 12. a driving motor; 2. an illumination unit; 3. an image acquisition unit; 31. a camera; 32. and (3) a bracket.
Detailed Description
As shown in fig. 1 and 2, an embodiment of the present utility model provides a visual inspection image acquisition structure for a bottle cap cover defect, which includes a conveying unit 1, an illumination unit 2 and an image acquisition unit 3.
Wherein the conveying unit 1 is used for clamping and moving the bottle body.
In this embodiment, the conveying unit 1 adopts two conveying belt mechanisms 11 horizontally arranged side by side, and the two conveying belt mechanisms 11 horizontally rotate to clamp and move the bottle body therebetween.
One end of each of the two conveyor belt mechanisms 11 is provided with a driving motor 12, and the driving motors 12 can drive the two conveyor belt mechanisms 11 to rotate at the same rotation speed.
The thickness of the two conveyor belt mechanisms 11 is smaller than the height of the bottle body to be detected.
The illumination unit 2 is located below the conveying path of the conveying unit 1, and irradiates light upward, and the light can illuminate the inside of the bottle cap through the bottom of the bottle body moving above the illumination unit.
Specifically, in the present embodiment, the illumination unit 2 is located below the conveying unit 1 and faces the nip between the two conveyor mechanisms 11.
In addition, the illumination unit 2 is preferably a ring light source to uniformly illuminate the bottle bottom, and the ring light source is activated and illuminated when the bottle body moves over the center of the ring light source.
The image acquisition unit 3 comprises at least three cameras 31, the at least three cameras 31 being arranged horizontally around the illumination unit 2 with the lens directed towards the central axis around. The central angle between adjacent cameras 31 is not more than 120 degrees, and the cameras 31 are located higher than the conveying unit 1.
Specifically, the view of the lens of the camera 31 is in the horizontal direction, the height of the view is equal to the height of the detected bottle cap, so that the view is taken in a mode of being right opposite to the side face of the bottle cap, and the situation that the light transmission condition of the bottle cap cannot be clearly taken due to the problem of angles during oblique angle shooting is avoided, and then the judgment error of the bottle cap sealing cap defect is caused.
The line of sight intersection of the lenses of at least three cameras 31 is located on the central axis of the annular light source.
For facilitating image processing, at least three cameras 31 are uniformly distributed, i.e. the central angles between adjacent cameras 31 are equal. Further, the distance between each camera 31 and the central axis around which it surrounds is equal.
Therefore, the proportion of bottle caps in the images shot by the cameras 31 is the same, and the sizes of the overlapped areas on the images shot by the cameras 31 are the same, so that duplicate removal and shearing can be performed in a uniform proportion when the images are spliced, and an image processing program is convenient to design.
In this embodiment, the image acquisition unit 3 includes four cameras 31, and the four cameras 31 are disposed at 90-degree included angles in a horizontal plane, so that the placement of the cameras 31 is facilitated, and the image of the right opposite side of the bottle cap can be acquired as much as possible, so that the detection is more accurate.
Four cameras 31 are disposed on both sides of the conveying unit 1, respectively, and two cameras 31 on the same side are disposed along the length direction of the parallel conveying belt mechanism 11.
In addition, the image pickup unit 3 further includes a stand 32 to stably support the camera 31, thereby enabling the camera 31 to clearly take an image.
The support 32 is a vertical rod, the lower end of the support 32 is fixed with a detection table (not shown in the figure), the camera 31 is mounted on the vertical rod, and the height of the camera 31 can be adjusted according to the size of the detection bottle body, so that the camera 31 and the detected bottle cap can be positioned at the same height position.
When detecting the bottle lid, the conveying unit 1 enables the bottle body to move in a suspended manner, and when the bottle body moves to the position above the illumination unit 2, the illumination unit 2 starts to irradiate light to the bottle bottom, and the light irradiates the inside of the bottle lid through the bottle bottom. At the same time, the cameras 31 are started to shoot the bottle cap image, and the complete image of the bottle cap is obtained by splicing and de-duplicating the images shot by the cameras 31. And judging whether the bottle cap is a broken cap or not according to the light transmission condition of the bottle cap.
According to the bottle cap cover defect visual detection image acquisition structure, the bottle bottom is polished into the bottle cap to replace the existing bottle cap polishing, so that the camera 31 can shoot in a relatively dark environment, the light transmission condition around the bottle cap can be clearly shot by the camera 31 due to the brightness difference between the inside and the outside of the bottle cap, and whether the bottle cap is broken (broken ring and broken bridge) defect is judged according to the brightness and the shape of a high-brightness light transmission area, so that the detection precision is improved.
In addition, the application adopts the multi-camera 31 to shoot images and acquires the complete image of the side face of the bottle cap in a splicing and de-duplication mode, thereby avoiding the shielding problem at the front and back bridging position during unidirectional or forward and backward shooting.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420007272.3U CN221782134U (en) | 2024-01-03 | 2024-01-03 | A bottle capping defect visual inspection image acquisition structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420007272.3U CN221782134U (en) | 2024-01-03 | 2024-01-03 | A bottle capping defect visual inspection image acquisition structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221782134U true CN221782134U (en) | 2024-09-27 |
Family
ID=92838031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420007272.3U Active CN221782134U (en) | 2024-01-03 | 2024-01-03 | A bottle capping defect visual inspection image acquisition structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221782134U (en) |
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2024
- 2024-01-03 CN CN202420007272.3U patent/CN221782134U/en active Active
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