Visual inspection equipment for workpiece inspection

Abstract

The utility model relates to the technical field of workpiece defect detection, in particular to visual detection equipment for workpiece detection, which comprises an annular transmission line, an unqualified product conveying line, a manipulator I, a manipulator II, a camera I and a camera II, a feeding station, a detection station and a discharging station are arranged on the annular transmission line, the detection station comprises an outer surface detection station and a bottom detection station, the first mechanical arm is arranged beside the annular transmission line and corresponds to the outer surface detection station, the first camera is installed on the mechanical arm, and the second camera is installed on the bottom detection station. The second mechanical arm is arranged beside the annular conveying line and corresponds to the bottom detection station, the second camera is installed on one side of the second mechanical arm, the camera shooting end of the second camera faces the upper portion, the grabbing end of the second mechanical arm can be matched with the second camera, and the unqualified product conveying line is arranged close to the second mechanical arm. And the manipulator II is matched with the input end of the unqualified product conveying line. The workpiece detection efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of workpiece defect detection, and specifically relates to a visual inspection device used for workpiece detection. Background Art

[0002] With the development of industry, the quality requirements for industrial workpieces are becoming increasingly higher. Among them, the integrity of the workpiece surface is the most intuitive way to reflect the quality of the workpiece. Therefore, from a manufacturing perspective, it is crucial to inspect the appearance of the workpiece after production, especially to detect scratches on the surface of the workpiece.

[0003] The existing scratch detection method mainly involves inspectors manually inspecting the workpiece to be inspected. However, the manual scratch detection method has extremely low detection efficiency.

[0004] There are also visual assistance devices that use cameras to take pictures of the workpiece, and use computers to identify whether there are scratches on the workpiece in the photo to determine whether the workpiece is intact. However, existing camera-assisted tools are mainly hand-held by workers. Workers hold the camera to take pictures of each side of the workpiece and upload them to the computer for identification. Manual methods may cause photography errors. At the same time, when taking pictures manually, it is more cumbersome to take pictures of the bottom surface of the workpiece. Workers need to use tools to turn the workpiece over before taking pictures of the bottom surface of the workpiece to complete scratch detection. This method is also time-consuming and labor-intensive, and photography errors may occur, resulting in inaccurate identification. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a visual inspection device for workpiece inspection.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a visual inspection device for workpiece inspection, comprising a ring transmission line, a defective product conveying line, a robot 1, a robot 2, a camera 1 and a camera 2, wherein the ring transmission line is arranged in a workpiece inspection workshop, and a loading station, an inspection station and an unloading station are respectively arranged on the ring transmission line, and the inspection station includes an outer surface inspection station and a bottom inspection station.

[0007] The robot arm is set up next to the ring transmission line at the surface inspection station, and the camera is installed on the robot arm.

[0008] The robot arm 2 is set at the bottom detection station next to the circular transmission line. The camera 2 is installed on one side of the robot arm 2, and the camera end of the camera 2 is set to face upwards. The gripping end of the robot arm 2 can cooperate with the camera 2.

[0009] The defective product conveying line is arranged near the second robot arm, and the second robot arm cooperates with the input end of the defective product conveying line.

[0010] In some embodiments, detection sensors are provided on the annular transmission line at locations corresponding to the loading station, the surface inspection station, the bottom inspection station, and the unloading station, respectively.

[0011] In some embodiments, the detection sensor is an infrared tube sensor.

[0012] In some embodiments, the defective product conveyor line is a plate chain conveyor line.

[0013] In some embodiments, the plate chain conveyor line is installed in the middle of the ring conveyor line, and the input end of the plate chain conveyor line is arranged toward the second robot arm, and the output end of the plate chain conveyor line is arranged near the unloading station.

[0014] Compared with the existing technology, the beneficial effects of the present invention are: through the setting of the ring conveyor line, the loading, unloading and testing of the workpiece can be closed-loop, which facilitates the transportation and loading and unloading of the workpiece;

[0015] The setting of the defective workpiece conveyor line can facilitate the removal of defective workpieces, avoiding the mixing of qualified and unqualified workpieces, which makes it difficult to distinguish the workpieces;

[0016] Through the setting of robot one, it is possible to take pictures of the workpiece in five directions: front, back, left, right, and top. Through the coordinated setting of robot two and camera two, it is possible to take pictures of the bottom surface of the workpiece, so that the workpiece can be inspected after being photographed in six directions, which improves work efficiency. After the photographing position is preset, the photographing efficiency is high, the photographing effect is good, and the recognition accuracy can be improved.

[0017] Details of one or more embodiments of the present application are presented in the following drawings and descriptions to make other features, purposes and advantages of the present application more concise and easy to understand, and the present application is fully described and understood through the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 This is a top view of the annular transmission line of the present invention.

[0020] In the figure: 1. Ring transmission line; 2. Defective product conveyor line; 3. Robot arm 1; 4. Robot arm 2; 5. Camera 1; 6. Camera 2; 7. Loading station; 8. Unloading station; 9. Surface inspection station; 10. Bottom inspection station; 11. Detection sensor. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-2 The present invention provides a technical solution: a visual inspection device for workpiece inspection, comprising a ring transmission line 1, a defective product conveyor line 2, a robot 1 3, a robot 2 4, a camera 1 5, and a camera 2 6. The ring transmission line 1 is arranged in a workpiece inspection workshop, and a loading station 7, an inspection station, and an unloading station 8 are respectively arranged on the ring transmission line 1. The inspection stations include an outer surface inspection station 9 and a bottom inspection station 10.

[0023] The robot arm 3 is set beside the ring transmission line 1 and corresponds to the surface inspection station 9. The camera 5 is installed on the robot arm.

[0024] The robot arm 2 4 is set at the bottom detection station 10 next to the circular transmission line 1. The camera 2 6 is installed on one side of the robot arm 2 4, and the camera end of the camera 2 6 is set to face upward. The gripping end of the robot arm 2 4 can cooperate with the camera 2 6.

[0025] The defective product conveying line 2 is arranged near the second robot 4 , and the second robot 4 cooperates with the input end of the defective product conveying line 2 .

[0026] The signal ends of the ring transmission line 1, the defective product conveying line 2, the robot arm 1 3, the robot arm 2 4, the camera 1 5 and the camera 2 6 are all connected to the computer;

[0027] Workers can be arranged to load and unload workpieces at the loading station 7 and the unloading station 8 respectively, or a robot can be used to load and unload workpieces;

[0028] After the workpiece to be inspected is placed at the loading station 7, the circular transmission line 1 transports the workpiece to the surface inspection station 9. The robot 3 drives the camera 5 to take pictures of the workpiece at this station from five directions: up, left, right, front and back, and transmits the captured images to the computer for image recognition;

[0029] After the shooting is completed, the circular transmission line 1 continues to transport the workpiece to the bottom inspection station 10. If the workpiece is detected to be defective at the surface inspection station 9, the robot arm 2 4 grabs the workpiece and places it on the unqualified product conveyor line 2 for removal. If the workpiece passes the inspection at the surface inspection station 9, the robot arm 2 4 grabs the workpiece and places it on the camera 2 6 for bottom photography and image recognition.

[0030] If there is a defect on the bottom of the workpiece, the robot arm 2 4 will grab the workpiece and place it on the unqualified product conveyor line 2 to be removed. If the bottom of the workpiece passes the inspection, the robot arm 2 4 will put the grabbed workpiece back to the bottom inspection station 10, and transport it to the unloading station 8 by the ring transmission line 1, and then it will be removed by a worker or a robot arm.

[0031] Detection sensors 11 are provided on the annular transmission line 1 at the positions corresponding to the loading station 7, the surface inspection station 9, the bottom inspection station 10 and the unloading station 8. The detection sensors 11 are infrared tube sensors.

[0032] In order to improve the operating efficiency of the equipment and facilitate the detection of whether there is a workpiece at each workstation, an infrared tube sensor is set at each workstation to improve work efficiency and avoid erroneous operations in the workpiece detection process.

[0033] The defective product conveying line 2 is a plate chain conveying line.

[0034] The plate chain conveyor line is installed in the middle of the ring conveyor line, and the input end of the plate chain conveyor line is arranged toward the robot 2 4, and the output end of the plate chain conveyor line is arranged near the unloading station 8.

[0035] By setting up the plate chain conveyor line, defective products can be directly removed. At the same time, the plate chain conveyor line is set in the middle of the ring conveyor line, which can reduce the equipment space occupancy rate and make it convenient for workers or other manipulators to remove defective workpieces from the plate chain conveyor line.

[0036] Through this technical solution, the whole machine working process is:

[0037] 1. Manual (robot) unloads the material at the loading position. The sensor at this position detects that there is a workpiece on the tray and then moves backwards;

[0038] 2. Run to the surface inspection station 9. After the sensor at this station detects that the workpiece is in place, the robot uses a camera to take pictures of the workpiece in five directions: front, back, left, right, and top. It also determines whether the workpiece has any defective parts such as scratches after processing.

[0039] 3. After the inspection at the surface inspection station 9 is completed, the circular conveyor line runs to the bottom inspection station 10. After the sensor at this station detects that the workpiece is in place, the gripper of the robot runs to the top of the workpiece, grabs the workpiece, runs to the fixed camera end, takes a picture of the bottom surface of the workpiece, and checks whether the bottom surface is qualified. If all six sides are qualified, it is placed back to the grabbing station. If the surface inspection station 9 fails the inspection, there is no need to perform bottom surface inspection and it is directly placed on the plate chain line. If the bottom surface inspection fails, it is placed on the plate chain line.

[0040] 4. Qualified products flow along the circular conveyor line to the unloading position for manual (robot) unloading, and unqualified products flow along the plate chain line to the end limit of the line, where they are picked up by unloading personnel or robots and placed in the waste box.

[0041] By setting up a circular conveyor line, a closed loop can be realized for workpiece loading, unloading and testing, making it convenient for workpiece handling and loading and unloading;

[0042] By setting up the defective workpiece conveyor line 2, it is possible to conveniently remove defective workpieces, thereby preventing qualified workpieces from being mixed with unqualified workpieces, resulting in the inability to distinguish the workpieces;

[0043] Through the setting of robot arm 1 3, it is possible to take pictures of the workpiece in five directions: front, back, left, right, and top. Through the coordinated setting of robot arm 2 4 and camera 2 6, it is possible to take pictures of the bottom surface of the workpiece, so that the workpiece can be inspected after being photographed in six directions, which improves work efficiency. After the photographing position is preset, the photographing efficiency is high, the photographing effect is good, and the recognition accuracy can be improved.

[0044] The above embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

[0045] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A visual inspection device for workpiece inspection, characterized in that: It includes a ring transmission line, a defective product conveying line, a robot 1, a robot 2, a camera 1 and a camera 2. The ring transmission line is set in a workpiece inspection workshop, and the ring transmission line is respectively provided with a loading station, an inspection station and an unloading station. The inspection station includes an outer surface inspection station and a bottom inspection station. The robot arm is set up next to the ring transmission line at the surface inspection station, and the camera is installed on the robot arm. The robot arm 2 is set at the bottom detection station next to the circular transmission line. The camera 2 is installed on one side of the robot arm 2, and the camera end of the camera 2 is set to face upwards. The gripping end of the robot arm 2 can cooperate with the camera 2. The defective product conveying line is arranged near the second robot arm, and the second robot arm cooperates with the input end of the defective product conveying line.

2. The visual inspection device for workpiece inspection according to claim 1, characterized in that: Detection sensors are provided on the annular transmission line at locations corresponding to the loading station, the surface inspection station, the bottom inspection station and the unloading station.

3. The visual inspection device for workpiece inspection according to claim 2, characterized in that: The detection sensor is an infrared tube sensor.

4. The visual inspection device for workpiece inspection according to claim 1, characterized in that: The defective product conveying line is a plate chain conveying line.

5. The visual inspection device for workpiece inspection according to claim 4, characterized in that: The plate chain conveyor line is installed in the middle of the ring conveyor line, and the input end of the plate chain conveyor line is arranged toward the second position of the robot, and the output end of the plate chain conveyor line is arranged close to the unloading station.

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