CN110579493A - Container visual detection method - Google Patents
Container visual detection method Download PDFInfo
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- CN110579493A CN110579493A CN201910717508.6A CN201910717508A CN110579493A CN 110579493 A CN110579493 A CN 110579493A CN 201910717508 A CN201910717508 A CN 201910717508A CN 110579493 A CN110579493 A CN 110579493A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/956—Inspecting patterns on the surface of objects
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- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention relates to the technical field of visual inspection of containers, and discloses a visual inspection method of a container, which comprises the following steps: 1) a specially-made concave imaging mirror is placed on a detection platform, after the concave imaging mirror is fixed, the central point of the concave imaging mirror is established, then a running path from the starting point to the central point of the robot arm is designed through a numerical control program, and the running path is input into a computer. The container visual detection method has the advantages that the concave imaging mirror is arranged to replace a plurality of cameras, the cost of detection equipment can be effectively reduced, the concave imaging mirror has a reflection effect on the smooth surface of a specially processed object, the method can replace the realization effect of a plurality of cameras through the simple structure of the concave imaging mirror, and meanwhile, the concave imaging mirror has a slight amplification effect when reflecting the surface image of a product, so that a detector can further observe and remove unqualified products conveniently.
Description
Technical Field
The invention relates to the technical field of visual inspection of containers, in particular to a visual inspection method of a container.
background
The existing processing technology of the film inner paste needs to detect a series of problems of dislocation, wrong pressing, overlapping, leakage gap and the like of product label connection points after the processing is finished, and the existing detection method generally adopts manual detection of product percent of pass.
the existing detection method generally comprises the steps that a product acquires images of a plurality of different surfaces through a plurality of working cameras, then a plurality of images are overlapped to form a three-dimensional image through computer operation, then manual detection and selection are carried out, the data acquisition of the plurality of cameras and the combination procedure of a computer are complex, the cost is high, meanwhile, when shooting, synthesizing and detecting products of different shapes, data adjustment is needed, and inconvenience is brought to users.
disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a visual detection method for a container, which has the advantages of low cost, wide applicability, simple structure and the like, and solves the problems that in the prior art, the data acquisition of a plurality of cameras and the combination procedure of a computer are complex, the cost is high, and meanwhile, when shooting, synthesizing and detecting products with different shapes, data adjustment is needed, and inconvenience is brought to users.
(II) technical scheme
In order to realize the purposes of low cost, wide applicability and simple structure, the invention provides the following technical scheme: a method of visual inspection of a container, comprising the steps of:
1) Placing a specially-made concave imaging mirror on the detection platform, fixing the concave imaging mirror, determining the central point of the concave imaging mirror, designing a running path from the starting point to the central point of the robot arm through a numerical control program, and inputting the running path into a computer;
2) Clamping a product to be detected by a robot arm, placing the product to be detected in the concave imaging mirror provided in the step 1) according to the path designed in the step 1), and ensuring that the central points of the product to be detected and the concave imaging mirror are on the same straight line;
3) Reflecting the image of the product to be detected by the concave imaging mirror in the step 2) through a camera which is in the same straight line with the product to be detected, collecting the image by plane shooting, collecting the plane image shot by the concave imaging mirror, and transmitting the plane image to a computer;
4) Automatically identifying flaws in a computer through image comparison software, comparing the obtained product image with the stored standard version image, and detecting and checking the product image obtained in the step 3);
5) judging the product quality of the image reaction in the step 4) by a computer, judging whether the product is qualified according to a preset fault-tolerant mechanism, if the product is qualified, putting the product into a qualified area by a robot arm, and detecting the next product, if the product has quality problems, putting the product into an unqualified area by the robot arm, and detecting the next product.
preferably, in the step 2) and the step 5), the product can be transported by being clamped by a robot arm or by being provided with a through hole at the bottom of the concave imaging mirror and transported by a corresponding up-down lifting mechanism.
Preferably, the concave imaging mirror in the step 1) is a concave mirror of which the smooth surface of the specially processed object has a reflection effect, and a plane placing table corresponding to the product is fixedly installed at the bottom or the top of the concave imaging mirror, and the plane placing table and the central point of the concave imaging mirror are on the same straight line.
Preferably, the camera in step 3) is positioned on the same straight line with the product to be detected and the center point of the concave imaging mirror, and the camera is positioned right above or right below the product to be detected.
Preferably, the starting point of the robot arm product controlled by the numerical control program in the step 1) is a product storage point, the central point is a concave imaging mirror placing point, the first end point is a product qualified area in the step 5), and the second end point is a product unqualified area in the step 5).
(III) advantageous effects
Compared with the prior art, the invention provides a visual detection method of a container, which has the following beneficial effects:
1. The visual detection method of the container can effectively reduce the cost of the detection equipment by arranging the concave imaging mirror to replace a plurality of cameras, simultaneously skips the step of synthesizing a plurality of pictures by a computer in the prior art, avoids the problem that the detection equipment cannot adapt to products with different shapes and needs complicated debugging in the prior art, adopts the concave imaging mirror with the reflection effect on the smooth surface of an object which is specially processed, adopts the simple structure of the concave imaging mirror to replace the realization effect of a plurality of cameras, has slight amplification effect when reflecting the surface image of the product, can further facilitate the observation and the removal of unqualified products by a detector, is fixedly provided with a plane placing table corresponding to the product at the bottom of the concave imaging mirror, and adopts the joint mode of the plane placing table and the concave imaging mirror, and the diameter of the plane placing table is the same as that of the concave imaging mirror, so that a user can conveniently configure different plane placing tables according to different products, the applicability of the equipment is effectively improved, and the influence of the plane placing table on the imaging of the concave imaging mirror is reduced to the maximum extent while the stable placing of the products is guaranteed.
2. the visual detection method of the container has the advantages that the camera is positioned right above the product to be detected through a picture, the plane of the whole reflected product of the concave imaging mirror is displayed through the camera and the central point of the concave imaging mirror, the defects are automatically identified through image comparison software in a computer, the obtained product image is compared with the stored standard image, the product image is detected and checked, the detection efficiency of the equipment can be effectively improved, the labor cost is reduced, the concave imaging mirror is a concave mirror with a reflection effect on the bright and clean surface of an object subjected to special treatment, the manufacturing cost of the equipment can be effectively reduced, the applicability of the equipment is improved, different concave imaging mirrors can be manufactured conveniently according to the products to be detected in different models, and the effects of low cost and wide applicability are achieved, the problem of among the prior art a plurality of cameras data acquisition and the combined procedure of computer complicated, and with high costs, when shooting the synthetic detection to the product of different shapes simultaneously, need carry out data conditioning, brought many inconveniences for the user is solved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A method of visual inspection of a container, comprising the steps of:
1) A specially-made concave imaging mirror is placed on a detection platform, after the concave imaging mirror is fixed, the central point of the concave imaging mirror is established, then a running path from the starting point to the central point of a machine arm is designed through a numerical control program and is input into a computer, the concave imaging mirror is a concave mirror of which the smooth and clean surface of a specially-processed object has a reflection effect, a plane placing table corresponding to a product is fixedly installed at the bottom or the top of the concave imaging mirror, and the plane placing table and the central point of the concave imaging mirror are on the same straight line;
2) Clamping a product to be detected by a robot arm, placing the product to be detected in the concave imaging mirror provided in the step 1) according to the path designed in the step 1), and ensuring that the central points of the product to be detected and the concave imaging mirror are on the same straight line;
3) The image of the product to be detected is reflected by the concave imaging mirror in the step 2) through a camera which is on the same straight line with the product to be detected, the image is collected by plane shooting, the plane image shot by the concave imaging mirror is collected and transmitted to a computer, the camera is on the same straight line with the product to be detected and the central point of the concave imaging mirror, and the camera is positioned right above or right below the product to be detected;
4) Automatically identifying flaws in a computer through image comparison software, comparing the obtained product image with the stored standard version image, and detecting and checking the product image obtained in the step 3);
5) Judging the product quality of the image reaction in the step 4) by a computer, judging whether the product is qualified according to a preset fault-tolerant mechanism, if the product is qualified, putting the product into a qualified area by a machine arm, detecting the next product, if the product has a quality problem, putting the product into an unqualified area by the machine arm, and detecting the next product, in the steps 2) and 5), clamping the product by the machine arm, or arranging a through hole at the bottom of a concave imaging mirror, and transporting the product by a corresponding up-down lifting mechanism, wherein the initial point of the machine arm product controlled by a numerical control program is a product storage point, the central point is a concave imaging mirror placing point, the first end point is a product qualified area in the step 5), and the second end point is a product unqualified area in the step 5).
the invention has the beneficial effects that: the visual detection method of the container can effectively reduce the cost of the detection equipment by arranging the concave imaging mirror to replace a plurality of cameras, simultaneously skips the step of synthesizing a plurality of pictures by a computer in the prior art, avoids the problem that the detection equipment cannot adapt to products with different shapes and needs complicated debugging in the prior art, adopts the concave imaging mirror with the reflection effect on the smooth surface of an object which is specially processed, adopts the simple structure of the concave imaging mirror to replace the realization effect of a plurality of cameras, has slight amplification effect when reflecting the surface image of the product, can further facilitate the observation and the removal of unqualified products by a detector, is fixedly provided with a plane placing table corresponding to the product at the bottom of the concave imaging mirror, and adopts the joint mode of the plane placing table and the concave imaging mirror, and the diameter of the plane placing table is the same as that of the concave imaging mirror, so that a user can conveniently configure different plane placing tables according to different products, the applicability of the equipment is effectively improved, and the influence of the plane placing table on the imaging of the concave imaging mirror is reduced to the maximum extent while the stable placing of the products is guaranteed.
in addition, the visual inspection method of the container can ensure that the camera is positioned right above the product to be inspected through a picture to display the plane of the whole reflected product of the concave imaging mirror by the fact that the camera is positioned on the same straight line with the central point of the product to be inspected and the central point of the concave imaging mirror, the image of the product is compared with the stored standard version image by the automatic defect identification of image comparison software in a computer to inspect and examine the product drawing, thereby effectively improving the inspection efficiency of the equipment and reducing the labor cost, the manufacturing cost of the equipment can be effectively reduced by the concave imaging mirror which is a specially processed object and has a reflection effect on the smooth and clean surface, the applicability of the equipment is improved, different concave imaging mirrors can be manufactured according to the products to be inspected in different models, and the effects of low cost and wide applicability are achieved, the problem of among the prior art a plurality of cameras data acquisition and the combined procedure of computer complicated, and with high costs, when shooting the synthetic detection to the product of different shapes simultaneously, need carry out data conditioning, brought many inconveniences for the user is solved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A method of visual inspection of a container, comprising the steps of:
1) placing a specially-made concave imaging mirror on the detection platform, fixing the concave imaging mirror, determining the central point of the concave imaging mirror, designing a running path from the starting point to the central point of the robot arm through a numerical control program, and inputting the running path into a computer;
2) clamping a product to be detected by a robot arm, placing the product to be detected in the concave imaging mirror provided in the step 1) according to the path designed in the step 1), and ensuring that the central points of the product to be detected and the concave imaging mirror are on the same straight line;
3) Reflecting the image of the product to be detected by the concave imaging mirror in the step 2) through a camera which is in the same straight line with the product to be detected, collecting the image by plane shooting, collecting the plane image shot by the concave imaging mirror, and transmitting the plane image to a computer;
4) automatically identifying flaws in a computer through image comparison software, comparing the obtained product image with the stored standard version image, and detecting and checking the product image obtained in the step 3);
5) judging the product quality of the image reaction in the step 4) by a computer, judging whether the product is qualified according to a preset fault-tolerant mechanism, if the product is qualified, putting the product into a qualified area by a robot arm, and detecting the next product, if the product has quality problems, putting the product into an unqualified area by the robot arm, and detecting the next product.
2. the visual inspection method for the container according to claim 1, wherein in the step 2) and the step 5), the product can be transported by being held by a robot arm or by being provided with a through hole at the bottom of the concave imaging mirror and transported by using a corresponding up-down lifting mechanism.
3. The visual inspection method for the container according to claim 1, wherein the concave imaging mirror in step 1) is a concave mirror with a reflective effect on the smooth surface of the specially processed object, and a flat placement platform corresponding to the product is fixedly installed on the bottom or the top of the concave imaging mirror, and the flat placement platform and the center point of the concave imaging mirror are in the same line.
4. The visual inspection method for the container according to claim 1, wherein the camera in step 3) is located on the same straight line with the center point of the product to be inspected and the center point of the concave imaging mirror, and the camera is located right above or below the product to be inspected.
5. the visual inspection method for containers as claimed in claim 1 or 3, wherein the starting point of the robot arm controlled by the numerical control program in step 1) is a product storage point, the central point is a concave imaging mirror placement point, the first end point is a product qualified area in step 5), and the second end point is a product unqualified area in step 5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910717508.6A CN110579493A (en) | 2019-08-05 | 2019-08-05 | Container visual detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910717508.6A CN110579493A (en) | 2019-08-05 | 2019-08-05 | Container visual detection method |
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| CN110579493A true CN110579493A (en) | 2019-12-17 |
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| CN201910717508.6A Pending CN110579493A (en) | 2019-08-05 | 2019-08-05 | Container visual detection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111982926A (en) * | 2020-07-23 | 2020-11-24 | 上海珂明注塑系统科技有限公司 | Visual detection equipment and detection method for container |
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| CN111982926A (en) * | 2020-07-23 | 2020-11-24 | 上海珂明注塑系统科技有限公司 | Visual detection equipment and detection method for container |
| CN111982926B (en) * | 2020-07-23 | 2023-08-18 | 上海珂明注塑系统科技有限公司 | Visual inspection equipment for container and inspection method thereof |
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Application publication date: 20191217 |