CN217332198U - Top cover detection device based on visual detection system - Google Patents
Top cover detection device based on visual detection system Download PDFInfo
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- CN217332198U CN217332198U CN202220983889.XU CN202220983889U CN217332198U CN 217332198 U CN217332198 U CN 217332198U CN 202220983889 U CN202220983889 U CN 202220983889U CN 217332198 U CN217332198 U CN 217332198U
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model discloses a top cap detection device based on visual detection system, including protection casing, conveyer belt mechanism, visual detection system and control system. The conveying belt mechanism penetrates through the protective cover; the conveying belt mechanism comprises a sorting conveying belt which is positioned at the tail end of the conveying belt mechanism; the sorting conveyor includes sorting arms and sorting lanes, the sorting arms transporting different products to respective sorting lanes. The visual detection system is matched with the conveyor belt mechanism; the visual detection system comprises a multi-depth-of-field detection mechanism, and the multi-depth-of-field detection mechanism is used for acquiring images of different depth-of-field positions on the surface of a product. The control system is respectively in communication connection with the visual detection system and the sorting conveyor belt. The vision detection system uploads the image to the control system, the control system makes a judgment and controls the sorting arm to convey the product to the corresponding sorting channel, the quality separation of the product is automatically realized, the multi-field-depth detection mechanism can reduce the blind area of mechanical detection, and the detection result is more accurate.
Description
Technical Field
The utility model relates to an outward appearance check out test set technical field specifically is a top cap detection device based on visual detection system.
Background
It is known that when workpieces are manufactured in large quantities in factories, quality defects of different degrees often occur for different reasons. In order to better realize the performance of the industrial product to which the workpiece belongs, the appearance and the shape of the produced product are generally required to be detected, and unqualified products are removed. With the development of science and technology, not only the quality requirement of a factory on a product is improved, but also the requirement on the detection efficiency is higher and higher.
In the traditional quality defect detection product process, manual operation is needed to adjust the aperture and the focusing ring of the camera for focusing and scan different images, and the situation that the acquired images are not clear due to the fact that the camera is not focused accurately exists in the operation process, so that the images cannot be analyzed; moreover, the traditional operation mode has certain requirements on the technology of operators, is labor-consuming and time-consuming, has low efficiency and cannot ensure the detection accuracy; the traditional detection mode is manually operated, needs to continuously and repeatedly check defects, and is easy to generate fatigue; or the quality accident is caused by the misjudgment, the missing detection and the like caused by the misoperation of personnel.
Patent "CN 202120688271.6" discloses an emulsion pump cover defect detector based on machine vision detection technique, including control system, heart round segmentation mechanism, conveyer belt conveying mechanism, bottom surface detection mechanism and side detection mechanism. Patent "202121904062.7" discloses a ceramic packaging container's outward appearance check out test set, including feeding conveyer belt, output conveyer belt, rotatory shooting detection mechanism, every single move shooting detection mechanism, letter sorting mechanism and embrace and press from both sides the mechanism of snatching. However, the existing appearance detection equipment does not collect images at different depth of field positions on the surface of a product, and a blind area still exists in the detection of the appearance of the product, so that improvement is needed.
SUMMERY OF THE UTILITY MODEL
In order to solve among the prior art artifical detection efficiency not high, the problem that there is the blind area still in the mechanical detection, the utility model provides a top cap detection device based on visual detection system, include:
a protective cover for attenuating an external light source;
the conveyor belt mechanism penetrates through the protective cover; the conveying belt mechanism comprises a sorting conveying belt which is positioned at the tail end of the conveying belt mechanism; the sorting conveyor belt comprises sorting arms and sorting channels, and the sorting arms convey different products to the corresponding sorting channels;
the visual detection system is arranged in the protective cover and is matched with the conveyor belt mechanism; the vision detection system comprises a multi-depth-of-field detection mechanism, and the multi-depth-of-field detection mechanism is used for acquiring images of different depth-of-field positions on the surface of a product;
and the control system is in communication connection with the visual detection system and the sorting conveying belt respectively.
As a further improvement of the above technical solution:
the conveying belt mechanism further comprises a first conveying belt and a second conveying belt, the first conveying belt, the second conveying belt and the sorting conveying belt are sequentially arranged and have the same conveying direction, and the working surface of the first conveying belt, the working surface of the second conveying belt and the working surface of the sorting conveying belt are positioned on the same plane; and a first gap is formed between the first conveyor belt and the second conveyor belt, a second gap is formed between the second conveyor belt and the sorting conveyor belt, and the width of the first gap and the width of the second gap are both smaller than half of the length of a product.
The multi-depth-of-field detection mechanism comprises a front camera set, wherein the front camera set is used for acquiring images of different depth-of-field positions on the front surface of the product; the front camera group comprises a first area array camera part, a second area array camera part, a third area array camera part and a fourth area array camera part which are arranged in parallel, the first area array camera part is matched with a first annular light source, the second area array camera part is matched with a second annular light source, the first annular light source and the second annular light source are positioned on the same plane, and the oblique angle of the first annular light source is different from that of the second annular light source; the third array camera element is matched with a third annular light source, and the third annular light source is higher than the first annular light source; the fourth array camera element is matched with a fourth coaxial light source.
The multi-depth-of-field detection mechanism further comprises a reverse side camera set, and the reverse side camera set is used for acquiring images of different depth-of-field positions on the reverse side of the product; the reverse side camera set comprises a fifth area array camera element and a sixth area array camera element, the fifth area array camera element is arranged in the first gap and matched with a fifth coaxial light source, and the sixth area array camera element is arranged in the second gap and matched with a sixth coaxial light source.
The visual detection system further comprises a side detection mechanism, the side detection mechanism comprises a plurality of side area array machine parts which are circumferentially arranged along the side detection station, and the side area array machine parts are matched with the side coaxial light source.
The visual detection system further comprises a plane detection mechanism, and the plane detection mechanism comprises a linear array camera and a linear array light source.
The sensing assembly is matched with the conveyor belt mechanism, the sensing assembly is positioned at the upstream of the visual detection system, and the sensing system is in communication connection with the control system; the sensing assembly comprises a scanner and a correlation sensor, the scanner is used for identifying a workpiece, and the correlation sensor is used for sensing the workpiece.
And limiting strips are arranged on two sides of the head end of the first conveyor belt and used for adjusting the position of a product.
The sorting arm is driven by a cylinder and is in communication connection with the control system.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) manual detection is changed into mechanical detection, so that the labor intensity of production personnel is greatly reduced, the production quality can be ensured, the production efficiency can be improved, and the operation time can be reasonably arranged by the production personnel; a plurality of groups of area-array cameras with different field depths are added, images of different field depth positions on the surface of a product are collected, blind areas of mechanical detection can be reduced, and a detection result is more accurate.
(2) The vision detection system uploads the image to the control system, the control system makes a judgment and controls the sorting arm to convey the product to the corresponding sorting channel, the good and bad separation of the product is automatically realized, the operation is simple and convenient, the safety performance is high, and the maintenance is convenient.
(3) When the images of different parts of the workpiece are collected, different light sources are adopted for matching, the detected images are clear in imaging, the action is rapid, and the accuracy is high.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the conveyor belt mechanism in cooperation with a vision inspection system;
FIG. 3 is a schematic view of a first, second and third array camera element;
FIG. 4 is a schematic view of a fourth array camera element, a reverse camera set and a line camera;
FIG. 5 is a schematic view of a side detection mechanism;
FIG. 6 is a schematic view of a sensing assembly;
FIG. 7 is a schematic view of a stop bar;
fig. 8 is a schematic view of a sorting conveyor.
Reference numerals:
1. a protective cover; 2. a conveyor belt mechanism; 21. a first conveyor belt; 22. a first gap; 23. a second conveyor belt; 24. a second gap; 25. sorting a conveyor belt; 251. a sorting arm; 252. a sorting channel;
3. a vision inspection system; 31. a side detection mechanism; 32. a side array camera element; 33. a side coaxial light source; 34. a front camera set; 341. a first planar array camera element; 342. a first annular light source; 343. a second planar array camera element; 344. a second annular light source; 345. a third array camera element; 346. a third annular light source; 347. a fourth array camera element; 348. a fourth coaxial light source; 35. a reverse camera set; 351. a fifth planar array camera element; 352. a fifth coaxial light source; 353. a sixth matrix camera element; 354. a sixth coaxial light source; 36. a line camera; 37. a linear array light source;
4. a control system; 5. an inductive component; 51. a scanner; 52. a correlation sensor; 6. and (5) a limiting strip.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention. Various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The visual inspection system comprises: the visual detection system utilizes an industrial camera to replace human eyes to complete functions of identification, measurement, positioning and the like.
Depth of field: depth of field (DOF) is the range of distance between the front and back of a subject measured by imaging that can obtain a sharp image at the front edge of a camera lens or other imager.
An annular light source: the LED array is conical and irradiates the surface of a measured object at an oblique angle, and a small area is illuminated in a diffuse reflection mode.
The coaxial light source provides more uniform illumination than conventional light sources while avoiding reflections of objects thereby improving the accuracy and reproducibility of machine vision.
Fig. 1 illustrates the overall structure of the present invention, fig. 2 illustrates the cooperation of the conveyor belt mechanism 2 and the vision inspection system 3, and fig. 8 illustrates the sorting conveyor belt 25. As shown in fig. 1, 2 and 8, the top cover detection device based on the visual detection system 3 of the present embodiment includes: the protective cover comprises a protective cover 1, a conveyor belt mechanism 2, a visual detection system 3 and a control system 4. The protective cover 1 is used for weakening an external light source, and a brown acrylic plate can be used as the protective cover 1. The conveyor belt mechanism 2 penetrates through the protective cover 1; the conveyor belt mechanism 2 comprises a sorting conveyor belt 25, and the sorting conveyor belt 25 is positioned at the tail end of the conveyor belt mechanism 2; the sorting conveyor 25 comprises sorting arms 251 and sorting channels 252, the sorting arms 251 carrying the different products to the respective sorting channels 252. The visual detection system 3 is arranged in the protective cover 1, and the visual detection system 3 is matched with the conveyor belt mechanism 2; the vision detection system 3 comprises a multi-depth-of-field detection mechanism, and the multi-depth-of-field detection mechanism is used for acquiring images of different depth-of-field positions on the surface of a product. Control system 4 is communicatively coupled to vision inspection system 3 and sorting conveyor 25, respectively.
It should be noted here that the conveyor belt part of the conveyor belt mechanism 2 moves at a constant speed, the region of interest (ROI) of the vision inspection system 3 is located above the conveyor belt part, and when the conveyor belt part drives the product to the lower side of the corresponding camera, the camera performs shooting matching, and the shooting gap of the camera can be preset. The protective cover 1 can weaken an external light source and prevent the image acquisition of the visual inspection system 3 from being influenced. The protective cover 1 can also reduce the influence of external moisture and dust on the instrument and prolong the service life of the machine. The conveyor belt mechanism 2 transports the product to the visual detection system 3, the visual detection system 3 collects the image of the surface of the product, and particularly the multi-depth detection mechanism is used for collecting the images of different depth positions of the surface of the product. The vision detection system 3 uploads the image to the control system 4, the control system 4 makes a judgment and controls the sorting arm 251 to convey the product to the corresponding sorting channel 252, the quality separation of the product is automatically realized, the multi-field-depth detection mechanism can reduce the blind area of mechanical detection, and the detection result is more accurate.
According to the embodiment of the present invention, fig. 4 illustrates a schematic diagram of the fourth array camera 347, the reverse side camera set 35 and the line camera 36, as shown in fig. 4, the conveyor mechanism 2 further includes a first conveyor 21 and a second conveyor 23, the first conveyor 21, the second conveyor 23 and the sorting conveyor 25 are arranged in sequence and have the same conveying direction, and the working surface of the first conveyor 21, the working surface of the second conveyor 23 and the working surface of the sorting conveyor 25 are located on the same plane; a first gap 22 is arranged between the first conveyor belt 21 and the second conveyor belt 23, a second gap 24 is arranged between the second conveyor belt 23 and the sorting conveyor belt 25, and the width of the first gap 22 and the width of the second gap 24 are both smaller than half of the length of the product. The product can pass the first gap 22 or the second gap 24 smoothly during the transfer without falling into the gaps.
According to an embodiment of the present invention, fig. 3 illustrates schematic diagrams of a first planar array camera element 341, a second planar array camera element 343, and a third planar array camera element 345, as shown in fig. 3, the multi-depth-of-field detection mechanism includes a front camera group 34, and the front camera group 34 is used for collecting images of different depth-of-field positions on the front surface of the product; the front camera group 34 includes a first, second, third and fourth array camera elements 341, 343, 345 and 347 arranged in parallel, and the depth of field of the first array camera element 341, the depth of field of the second array camera element 343, the depth of field of the third array camera element 345 and the depth of field of the fourth array camera element 347 are different. The first planar array camera element 341 is matched with the first annular light source 342, the second planar array camera element 343 is matched with the second annular light source 344, the first annular light source 342 and the second annular light source 344 are positioned on the same plane, and the oblique angle of the first annular light source 342 is different from that of the second annular light source 344; the third array camera element 345 is mated with a third annular light source 346, the third annular light source 346 being higher than the first annular light source 342; the fourth array element 347 cooperates with a fourth coaxial light source 348. Through the cooperation of a plurality of groups of area-array cameras, images of different depth-of-field positions on the front surface of the product are collected, so that the detected images are clearer and more comprehensive, and the detection result is more accurate.
It should be noted that the front camera group 34 includes a plurality of area-array cameras, and the number of the area-array cameras can be adjusted according to the product characteristics and the accuracy requirement, for example, when the product is thicker or stacked by different layers, the number of the area-array cameras can be increased to seven.
According to the embodiment of the present invention, as shown in fig. 4, the multi-depth-of-field detection mechanism further includes a reverse side camera set 35, and the reverse side camera set 35 is used for acquiring images of different depth-of-field positions on the reverse side of the product; the reverse camera set 35 includes a fifth area array camera element 351 and a sixth area array camera element 353, the depth of field of the fifth area array camera element 351 is different from the depth of field of the sixth area array camera element 353, the fifth area array camera element 351 is disposed in the first gap 22 and is matched with the fifth coaxial light source 352, and the sixth area array camera element 353 is disposed in the second gap 24 and is matched with the sixth coaxial light source 354. The reverse camera set 35 includes a plurality of area array camera elements, and the number of the area array camera elements can be adjusted according to the product characteristics and the accuracy requirement.
According to the embodiment of the present invention, fig. 5 illustrates a schematic view of the side detection mechanism 31, as shown in fig. 5, the vision inspection system 3 further includes the side detection mechanism 31, the side detection mechanism 31 includes a plurality of side area array camera parts 32 arranged along the side detection station circumference, and the side area array camera parts 32 are matched with the side coaxial light source 33. The side array camera element 32 captures images of the side of the product.
According to the embodiment of the present invention, as shown in fig. 4, the vision inspection system 3 further includes a plane detection mechanism, and the plane detection mechanism includes a linear array camera 36 and a linear array light source 37.
According to the embodiment of the present invention, fig. 6 illustrates a schematic diagram of the sensing assembly 5, as shown in fig. 6, the sensing assembly 5 further includes a sensing assembly 5, the sensing assembly 5 is matched with the conveyor belt mechanism 2, the sensing assembly 5 is located at the upstream of the vision detecting system 3, and the sensing system is in communication connection with the control system 4; the sensing assembly 5 includes a scanner 51 and an opposite-direction sensor 52, the scanner 51 is used for identifying the workpiece, and the opposite-direction sensor 52 is used for sensing the workpiece.
It should be noted here that the ROI of the scanner 51 is located above the conveyor belt mechanism 2, the scanner 51 can identify the two-dimensional code of the product and upload the two-dimensional code to the control system 4, the correlation sensor 52 can sense the position of the product in the conveyor belt mechanism 2 and transmit the information to the control system 4, and the control system 4 calculates the shooting time of the visual detection system 3, so as to achieve automatic and accurate image acquisition.
According to the utility model discloses an embodiment, fig. 7 has exemplified the schematic diagram of spacing 6, as shown in fig. 7, the both sides of first conveyer belt 21 head end are equipped with spacing 6, and the quantity of spacing 6 is two, and two spacing 6 are symmetrical about first conveyer belt 21, and the distance between two spacing 6 reduces from first conveyer belt 21 head end to end gradually, and spacing 6 is used for adjusting the position of product. When the product enters the space between the limiting strips 6, the gap between the limiting strips 6 is reduced, and the product is adjusted to be positioned at the center of the first conveyor belt 21, so that the subsequent image acquisition of the sensing assembly 5 and the visual detection system 3 is facilitated.
According to the utility model discloses an embodiment, letter sorting arm 251 is driven by the cylinder, letter sorting arm 251 and control system 4 communication connection. The sorting arm 251 may also be driven by a screw mechanism.
The utility model discloses during the use, first conveyer belt 21 drives the product motion, and spacing 6 adjustment product position is to first conveyer belt 21 center, and when correlation sensor 52 detected the product and reached the detection area, scanner 51 read the product two-dimensional code to transport the product backward by first conveyer belt 21, and when the product transported to the side detection station, four side area array cameras began working, shot four sides of detecting the product; the first, second and third array cameras 341, 343, 345 capture different depth of field positions of the front side of the inspection product. The product continues to be transported backwards and when the first gap 22 is reached, the fifth array camera element 351 below takes a picture of the bottom surface of the product. At this time, the product reaches the second conveyor belt 23, the fourth array camera 347 on the second conveyor belt 23 photographs the front image of the product, and the line camera 36 photographs the entire surface of the product. The product continues to be transported back to the second gap 24 and a sixth array of camera elements 353 below the second gap 24 takes a picture of the bottom surface of the product. At this moment, the shooting is finished, and the control system 4 judges whether the product is a defective product according to the previous shooting detection result. If the products are judged to be qualified, the products are conveyed backwards continuously, otherwise, the sorting arm 251 pushes the products to an unqualified product line.
The utility model discloses in the technical scheme of each embodiment can make up, technical feature in the embodiment also can make up and form new technical scheme, the structure that does not mention, can realize the correlation function in the embodiment is prior art.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A top cover detection device based on a visual detection system is characterized by comprising:
a protective cover for attenuating an external light source;
the conveyor belt mechanism penetrates through the protective cover; the conveying belt mechanism comprises a sorting conveying belt which is positioned at the tail end of the conveying belt mechanism; the sorting conveyor belt comprises sorting arms and sorting channels, and the sorting arms convey different products to the corresponding sorting channels;
the visual detection system is arranged in the protective cover and is matched with the conveyor belt mechanism; the visual detection system comprises a multi-depth-of-field detection mechanism, wherein the multi-depth-of-field detection mechanism is used for acquiring images of different depth-of-field positions on the surface of a product;
and the control system is in communication connection with the visual detection system and the sorting conveyor belt respectively.
2. The visual inspection system-based cap inspection device according to claim 1, wherein the conveyor mechanism further comprises a first conveyor and a second conveyor, the first conveyor, the second conveyor and the sorting conveyor are arranged in sequence and have the same conveying direction, and the working surfaces of the first conveyor, the second conveyor and the sorting conveyor are in the same plane; and a first gap is formed between the first conveyor belt and the second conveyor belt, a second gap is formed between the second conveyor belt and the sorting conveyor belt, and the width of the first gap and the width of the second gap are both smaller than half of the length of a product.
3. The top cover detection device based on the visual detection system according to claim 1 or 2, wherein the multi-depth detection mechanism comprises a front camera set, and the front camera set is used for acquiring images of different depth positions on the front surface of the product; the front camera group comprises a first area array camera part, a second area array camera part, a third area array camera part and a fourth area array camera part which are arranged in parallel, the first area array camera part is matched with a first annular light source, the second area array camera part is matched with a second annular light source, the first annular light source and the second annular light source are positioned on the same plane, and the oblique angle of the first annular light source is different from that of the second annular light source; the third array camera element is matched with a third annular light source, and the third annular light source is higher than the first annular light source; the fourth array camera element is matched with a fourth coaxial light source.
4. The visual inspection system-based roof inspection device of claim 2, wherein the multi-depth-of-field inspection mechanism further comprises a reverse camera set for capturing images of different depth-of-field positions of the reverse side of the product; the reverse side camera set comprises a fifth area array camera element and a sixth area array camera element, the fifth area array camera element is arranged in the first gap and matched with a fifth coaxial light source, and the sixth area array camera element is arranged in the second gap and matched with a sixth coaxial light source.
5. The visual inspection system-based cap inspection device of claim 1 or 2, further comprising a side inspection mechanism comprising a plurality of side area array camera elements circumferentially arranged along a side inspection station, the side area array camera elements cooperating with the side coaxial light source.
6. The visual inspection system-based roof inspection device of claim 1 or 2, wherein the visual inspection system further comprises a plane inspection mechanism, the plane inspection mechanism comprising a line camera and a line light source.
7. The visual inspection system-based cap inspection device of claim 1 or 2, further comprising a sensing assembly cooperating with the conveyor belt mechanism, the sensing assembly being located upstream of the visual inspection system, the sensing assembly being in communication with the control system; the sensing assembly comprises a scanner and a correlation sensor, the scanner is used for identifying a workpiece, and the correlation sensor is used for sensing the workpiece.
8. The visual inspection system-based roof inspection device of claim 2, wherein the first conveyor belt is provided with a stop strip on both sides of the head end, and the stop strip is used for adjusting the position of the product.
9. The visual inspection system-based cap inspection device of claim 1 or 2, wherein the sorter arm is driven by a pneumatic cylinder, the sorter arm being communicatively coupled to the control system.
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| CN202220983889.XU CN217332198U (en) | 2022-04-26 | 2022-04-26 | Top cover detection device based on visual detection system |
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