Lens ring appearance detection device and detection method thereof

Abstract

This invention provides a lens ring appearance inspection device and method, including a machine base. The machine base is equipped with a loading station, a tray positioning station, a front appearance inspection station, a bottom appearance inspection station, a side appearance inspection station, and an unloading station. A tray positioning station is located on one side of the loading station. The front appearance inspection station is equipped with a front appearance inspection camera assembly for inspecting the front of the product. The bottom appearance inspection station is equipped with a bottom appearance inspection camera assembly for inspecting the bottom of the product. The side appearance inspection station is equipped with a side appearance inspection camera assembly for inspecting the sides of the product. This invention can automatically handle products and inspect the top, bottom, and sides for appearance defects. Intelligent control through a main control system provides more comprehensive measurement data and higher data acquisition accuracy.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of appearance detection, and in particular to a lens ring appearance detection device and a detection method thereof. BACKGROUND

[0002] Appearance detection is mainly a detection method for quickly identifying appearance defects of a sample. An appearance detection system is mainly used for quickly identifying appearance defects of a sample, such as pits, cracks, warping, gaps, stains, sand particles, burrs, bubbles, and uneven color. The sample to be detected can be a transparent body or an opaque body. In the past, product appearance detection was generally in the form of naked-eye identification, and thus it was possible that human factors led to non-uniform measurement standards, and that long-time detection resulted in misjudgment due to visual fatigue. With the deep cooperation of computer technology and optical, mechanical, and electrical technologies, the detection has the characteristics of rapidity and accuracy.

[0003] Most existing material detection devices rely on a group of shooting cameras to shoot appearance defects of the material to be detected, which results in that the detection of the material is not comprehensive enough and that defective products are easily produced. Through detection by multiple machines using multiple groups of shooting cameras, a large space is occupied, manual feeding and discharging are required, the detection time is long, the production efficiency is low, and the degree of intelligent automation is not high.

[0004] There is a need for a lens ring appearance detection device and a detection method thereof that have a higher degree of automation and more accurate appearance detection, and that can solve the above-mentioned problems. SUMMARY

[0005] The present application provides a lens ring appearance detection device and a detection method thereof. Through technical transformation of an existing appearance detection device, the problems of low degree of intelligent automation and inaccurate and comprehensive detection results of an existing curved pipe detection device are solved.

[0006] To achieve the above object, the technical scheme adopted by the present application is as follows:

[0007] A lens ring appearance detection device comprises a machine table, an upper feeding station, a tray positioning station, a front appearance detection station, a bottom appearance detection station, a side appearance detection station and a lower feeding station are arranged on the machine table respectively, an upper feeding trolley is placed at the upper feeding station, a tray on which products are placed is stacked on the upper feeding trolley, a tray positioning station for positioning the tray is arranged on one side of the upper feeding station, a front appearance detection camera assembly for detecting the front of the products is arranged on the front appearance detection station, a bottom appearance detection camera assembly for detecting the bottom of the products is arranged on the bottom appearance detection station, a side appearance detection camera assembly for detecting the side of the products is arranged on the side appearance detection station, a carrying manipulator assembly for carrying the tray and the products is arranged on the machine table, and the carrying manipulator assembly is used to carry the tray and the products through the upper feeding station, the tray positioning station, the front appearance detection station, the bottom appearance detection station, the side appearance detection station and the lower feeding station in sequence.

[0008] Preferably, the carrying manipulator assembly comprises a first carrying manipulator, a second carrying manipulator and a third carrying manipulator, the first carrying manipulator is arranged on one side of the upper feeding station, the first carrying manipulator is used to grasp the tray of the upper feeding station to the tray positioning station and grasp the products on the tray to the front appearance detection station, the second carrying manipulator is used to carry the products of the front appearance detection station through the bottom appearance detection station until the products are placed at the side appearance detection station, and the third carrying manipulator is used to carry the products of the side appearance detection station to the lower feeding station.

[0009] Preferably, a secondary positioning assembly is arranged at the tray positioning station, the secondary positioning assembly comprises a positioning mounting seat, a sensor assembly and a push rod assembly, the positioning mounting seat is fixedly mounted on the machine table, a mounting position for placing the tray is arranged on the positioning mounting seat, the sensor assembly and the push rod assembly are respectively mounted on the outer circumferential side of the mounting position, the sensor assembly is used to identify the tray, and the push rod assembly is used to push the tray for clamping positioning.

[0010] Preferably, a conveying belt for transferring empty trays is arranged on one side of the tray positioning station, the output end of the conveying belt is arranged at the lower feeding station, the first carrying manipulator is used to carry the empty tray to the conveying belt, and the third carrying manipulator is used to carry the empty tray to the lower feeding station.

[0011] Preferably, the front appearance detection station is provided with a six-equal-division rotating platform, six product detection carriers for placing products are uniformly and interval fixedly installed on the six-equal-division rotating platform, an upper feeding position, a first forward visual detection position, a second forward visual detection position, a third forward visual detection position, a fourth forward visual detection position and a lower feeding position are sequentially arranged on the six-equal-division rotating platform according to the positions of the product detection carriers, the front appearance detection camera assembly comprises a first forward visual detection camera, a second forward visual detection camera, a third forward visual detection camera and a fourth forward visual detection camera, the shooting direction of the first forward visual detection camera is arranged opposite to the upper surface of the product on the product detection carrier at the first forward visual detection position, the shooting direction of the second forward visual detection camera is arranged opposite to the upper surface of the product on the product detection carrier at the second forward visual detection position, the shooting direction of the third forward visual detection camera is arranged opposite to the upper surface of the product on the product detection carrier at the third forward visual detection position, and the shooting direction of the fourth forward visual detection camera is arranged opposite to the upper surface of the product on the product detection carrier at the fourth forward visual detection position.

[0012] Preferably, the first forward visual detection camera, the second forward visual detection camera, the third forward visual detection camera and the fourth forward visual detection camera are respectively provided with different focal lengths and light source assemblies according to the product detection needs.

[0013] Preferably, the bottom appearance detection camera assembly comprises a lower camera, a lower camera mounting rack and a lower camera light source, the lower camera mounting rack is fixedly installed on the machine table, the lower camera is vertically installed on the lower camera mounting rack, and the lower camera light source is further installed on the upper side of the lower camera mounting rack, and the lens shooting direction of the lower camera penetrates through the lower camera light source and is arranged opposite to the bottom surface of the product passing above.

[0014] Preferably, the side appearance detection station is provided with a four-equal-division rotating platform, four product detection rotating carrier structures for placing products are uniformly and interval fixedly installed on the four-equal-division rotating platform, an upper and lower feeding position, a first side visual detection position, a second side visual detection position and a third side visual detection position are sequentially arranged on the four-equal-division rotating platform according to the positions of the product detection rotating carrier structures, the side appearance detection camera assembly comprises a first side visual detection camera, a second side visual detection camera and a third side visual detection camera, the shooting direction of the first side visual detection camera is arranged opposite to the side of the product on the product detection carrier at the first side visual detection position, the shooting direction of the second side visual detection camera is arranged opposite to the side of the product on the product detection carrier at the second side visual detection position, and the shooting direction of the third side visual detection camera is arranged opposite to the side of the product on the product detection carrier at the third side visual detection position.

[0015] Preferably, the product inspection rotating carrier structure includes a carrier platform body, a drive structure, a product seat, and a linkage mechanism. The carrier platform body is mounted on a machine base and has several parallel product seat mounting slots. A product seat is rotatably mounted in each product seat mounting slot, and a product is fixedly placed on the product seat. The drive structure is also installed on the carrier platform body. The output end of the drive structure drives the product seat to rotate synchronously through the linkage mechanism. The side appearance inspection camera assembly is positioned facing the product on the product seat.

[0016] Preferably, the unloading station is provided with a good product unloading station and a defective product unloading station. Both the good product unloading station and the defective product unloading station are provided with unloading trolleys for stacking material trays. The main control system controls the handling robot assembly to grab the products to the good product unloading station or the defective product unloading station for screening and unloading according to the detection results.

[0017] A method for inspecting the appearance of the lens ring as described above includes the following steps:

[0018] S1. Loading the trolley: Place the material box containing the product on the loading trolley, and then stop the loading trolley at the loading station of the machine for loading.

[0019] S2. Secondary positioning of the material tray: The handling robot arm component grabs the material tray and moves it to the material tray positioning station for secondary positioning.

[0020] S3. The product is loaded to the front appearance inspection station. The handling robot component grabs and transfers the product to the carrier at the turntable loading position of the six-part rotating platform of the front appearance inspection station. After the product on the tray is grabbed and emptied, the handling robot component moves the empty tray to the side conveyor belt and transfers it to the unloading station.

[0021] S4. Product front appearance inspection: The six-part rotating platform rotates to sequentially pass the product through the first, second, third, and fourth front visual inspection positions for appearance visual inspection, obtain the product front appearance information, and send it to the main control system.

[0022] S5. Product bottom appearance inspection: The six-part rotating platform rotates to rotate the product to the unloading position. The handling robot component grabs the product and passes it through the bottom appearance inspection station. The bottom camera set at the bottom appearance inspection station inspects the bottom of the product, obtains the bottom appearance information of the product, and sends it to the main control system.

[0023] S6. Product side appearance inspection: The handling robot arm component grabs the product and places it on the product inspection rotating carrier structure of the four-part rotating platform at the side appearance inspection station. The four-part rotating platform rotates and passes the product through the first side visual inspection position, the second side visual inspection position and the third side visual inspection position in sequence for appearance visual inspection, obtains the product side appearance information and sends it to the main control system.

[0024] S7. Product unloading: The four-part rotating platform rotates to move the product to the loading / unloading position. The main control system controls the handling robot to grab the inspected product to the good product unloading position or the defective product unloading position of the unloading station for screening and unloading.

[0025] The beneficial effects of this invention are as follows:

[0026] The machine tool of this invention is sequentially equipped with a front appearance inspection station, a bottom appearance inspection station, and a side appearance inspection station. The front appearance inspection station is equipped with multiple sets of forward vision inspection cameras with different focal lengths and light sources to detect the appearance information of different positions on the top surface of the product. Then, a transport robot assembly grasps the product and passes it through a lower camera at the bottom appearance inspection station to detect the bottom appearance information. The product is then transported to the side appearance inspection station, where multiple sets of lateral vision inspection cameras detect the appearance information of different positions on the side of the product and send the data to the main control system. The main control system controls the transport robot assembly to grasp the product and place it at the unloading position for screening and unloading. This invention can automatically transport products and detect appearance defects on the top, bottom, and sides of the product. Intelligent control through the main control system results in more comprehensive measurement data and higher data acquisition accuracy.

[0027] The present invention features a rotating carrier structure at the inspection station, which can simultaneously drive multiple products to rotate, facilitating appearance inspection of products from different angles and sides, and achieving higher inspection accuracy.

[0028] Furthermore, this invention features a good product unloading station and a defective product unloading station at the unloading station. The main control system controls the handling robot assembly to grab products to the good product unloading station and the defective product unloading station respectively for screening and unloading based on the detection results, resulting in a higher level of intelligence. Attached Figure Description

[0029] Figure 1 This is a top view of the machine tool structure of the present invention;

[0030] Figure 2 This is a three-dimensional structural schematic diagram of the present invention;

[0031] Figure 3 This is a schematic diagram of the structure of the handling robot component of the present invention;

[0032] Figure 4 This is a schematic diagram of the secondary positioning component structure of the present invention;

[0033] Figure 5 This is a schematic diagram of the structure at the front appearance inspection station of the present invention;

[0034] Figure 6 This is a schematic diagram of the structure of the bottom surface appearance inspection station and the side surface appearance inspection station of the present invention;

[0035] Figures 7-8 This is a schematic diagram of the rotating carrier structure for testing the product of this invention;

[0036] Figure 9 This is a schematic diagram of the structure at the material unloading station of the present invention;

[0037] Figure 10 This is a schematic diagram of the detection method steps of the present invention;

[0038] Reference numerals: 1. Machine base; 11. Conveyor belt; 2. Loading station; 21. Loading trolley; 3. Tray positioning station; 31. Secondary positioning assembly; 31. Positioning mounting base; 311. Sensor assembly; 312. Push rod assembly; 313. Front appearance inspection station; 4. Front appearance inspection camera assembly; 41. First frontal vision inspection camera; 411. Second frontal vision inspection camera; 412. Third frontal vision inspection camera; 413. Fourth frontal vision inspection camera; 414. Horizontal drive assembly; 415. Frontal camera mounting bracket; 416. Frontal vision inspection camera; 417. Frontal vision inspection light source; 418. Six-part rotating platform; 42. Product inspection carrier; 43. Bottom appearance inspection station; 5. Bottom appearance inspection camera assembly. 51. Lower camera 511. Lower camera mounting bracket 512. Lower camera light source 513. Side appearance inspection station 6. Four-part rotating platform 61. Product inspection rotating carrier structure 62. Carrier platform body 621. Drive structure 622. Product seat 623. Rotating wheel 6231. Linkage mechanism 624. Belt 6241. Guide wheel assembly 6242. Belt pulley tension adjustment assembly 625. First side vision inspection camera 63. Second side vision inspection camera 64. Third side vision inspection camera 65. Unloading station 7. Good product unloading station 71. Defective product unloading station 72. Handling robot assembly 8. First handling robot 81. Second handling robot 82. Third handling robot 83. Material tray 9. Detailed Implementation

[0039] The specific details of the present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] Please see Figures 1-10As shown, the present invention provides a lens ring appearance inspection device, including a machine base 1. The machine base 1 is respectively provided with a loading station 2, a tray positioning station 3, a front appearance inspection station 4, a bottom appearance inspection station 5, a side appearance inspection station 6, and a unloading station 7. A loading trolley 21 is placed at the loading station 2, and trays 9 with products placed on them are stacked on the loading trolley 21. A tray positioning station 3 for positioning the trays is provided on one side of the loading station 2. The front appearance inspection station 4 is provided for inspecting the front of the product. The machine base 1 is equipped with a front appearance inspection camera assembly 41, a bottom appearance inspection station 5 for inspecting the bottom of the product, a side appearance inspection station 6 for inspecting the side of the product, and a material handling robot assembly 8 for handling the material tray and the product. The material handling robot assembly 8 is used to handle the material tray and the product sequentially through the loading station 2, the material tray positioning station 3, the front appearance inspection station 4, the bottom appearance inspection station 5, the side appearance inspection station 6, and the unloading station 7.

[0041] Furthermore, the handling robot assembly 8 includes a first handling robot 81, a second handling robot 82, and a third handling robot 83. The first handling robot 81 is disposed on one side of the loading station 2. The first handling robot 81 is used to grab the material tray of the loading station 2 to the material tray positioning station 3 and to grab the product on the material tray to the front appearance inspection station 4. The second handling robot 82 is used to transport the product of the front appearance inspection station 4 through the bottom appearance inspection station 5 until it is placed at the side appearance inspection station 6. The third handling robot 83 is used to transport the product of the side appearance inspection station 6 to the unloading station 7.

[0042] The handling robot assembly 8 includes a handling drive assembly 84, a tray gripping mechanism 85, and a product gripping mechanism 86. The tray gripping mechanism 85 and the product gripping mechanism 86 are respectively installed at the output end of the handling drive assembly 84. The handling drive assembly 84, the tray gripping mechanism 85, and the product gripping mechanism 86 are electrically connected to the main control system. The tray gripping mechanism 85 is used to control the gripping of the tray for transfer, and the product gripping mechanism 86 is used to control the gripping of products. The product gripping mechanism 86 is equipped with multiple pneumatic grippers, and each gripper can be controlled individually by the main control system.

[0043] Furthermore, a secondary positioning component 31 is provided at the material tray positioning station 3. The secondary positioning component includes a positioning mounting base 311, a sensor component 312, and a push rod component 313. The positioning mounting base 311 is fixedly installed on the machine base 1. The positioning mounting base 311 is provided with a mounting position for placing the material tray. The sensor component 312 and the push rod component 313 are respectively installed on the outer periphery of the mounting position. The sensor component 312 is used to identify the material tray, and the push rod component 313 is used to push the material tray for clamping and positioning.

[0044] Furthermore, a conveyor belt 11 for transferring empty material trays 9 is provided on one side of the material tray positioning station 3. The output end of the conveyor belt 11 is located at the unloading station 7. The first handling robot 81 is used to transport the empty material tray to the conveyor belt 11, and the third handling robot 83 is used to transport the empty material tray to the unloading station 7.

[0045] Furthermore, the front appearance inspection station 4 is equipped with a six-part rotating platform 42. Six product inspection carriers 43 for placing products are evenly spaced and fixedly installed on the six-part rotating platform 42. The six-part rotating platform 42 is arranged sequentially according to the positions of the product inspection carriers 43, including a loading position, a first front visual inspection position, a second front visual inspection position, a third front visual inspection position, a fourth front visual inspection position, and a unloading position. The front appearance inspection camera assembly 41 includes a first front visual inspection camera 411, a second front visual inspection camera 412, a third front visual inspection camera 413, and a fourth front visual inspection camera 414. The visual inspection cameras 414 are configured such that the first forward visual inspection camera 411 is positioned with its shooting direction facing the upper surface of the product on the product inspection carrier 43 at the first forward visual inspection position, the second forward visual inspection camera 412 is positioned with its shooting direction facing the upper surface of the product on the product inspection carrier 43 at the second forward visual inspection position, the third forward visual inspection camera 413 is positioned with its shooting direction facing the upper surface of the product on the product inspection carrier 43 at the third forward visual inspection position, and the fourth forward visual inspection camera 414 is positioned with its shooting direction facing the upper surface of the product on the product inspection carrier 43 at the fourth forward visual inspection position.

[0046] Multiple products are placed in a row on the product inspection carrier 43, which facilitates the simultaneous appearance inspection of multiple products and improves production efficiency.

[0047] The frontal appearance inspection camera assembly 41 includes a horizontal drive assembly 415, a frontal camera mounting bracket 416, a frontal vision inspection camera 417, and a frontal vision inspection light source 418. The horizontal drive assembly 415 is mounted on the machine base 1, and the frontal camera mounting bracket 416 is mounted on the output end of the horizontal drive assembly 415. The frontal vision inspection camera 417 and the frontal vision inspection light source 418 are mounted on the frontal camera mounting bracket 416. The frontal vision inspection camera 417 and the frontal vision inspection light source 418 are positioned above the product inspection carrier 43. The shooting direction of the frontal vision inspection camera 417 passes through the frontal vision inspection light source 418 and faces the product below. The horizontal drive assembly 415 drives the frontal vision inspection camera 417 to move horizontally, facilitating appearance inspection of different products on the product inspection carrier 43.

[0048] Furthermore, the first forward vision inspection camera 411, the second forward vision inspection camera 412, the third forward vision inspection camera 413 and the fourth forward vision inspection camera 414 are each equipped with different focal lengths and light source components according to the product inspection requirements.

[0049] Furthermore, the bottom surface appearance inspection camera assembly 51 includes a lower camera 511, a lower camera 511 mounting bracket, and a lower camera 511 light source. The lower camera 511 mounting bracket is fixedly installed on the machine base 1. The lower camera 511 is vertically installed on the lower camera 511 mounting bracket, and the lower camera 511 light source is also installed on the upper side of the lower camera 511 mounting bracket. The shooting direction of the lower camera 511 lens is set through the lower camera 511 light source and directly facing the bottom surface of the product passing above.

[0050] Furthermore, the side appearance inspection station 6 is provided with a four-part rotating platform 61. Four product inspection rotating carrier structures 62 for placing products are evenly spaced and fixedly installed on the four-part rotating platform 61. The four-part rotating platform 61 is arranged with loading and unloading positions, a first side visual inspection position, a second side visual inspection position, and a third side visual inspection position in sequence according to the positions of the product inspection rotating carrier structures 62. The side appearance inspection camera assembly includes a first side visual inspection camera 63, a second side visual inspection camera 64, and a third side visual inspection camera 65. The first side visual inspection camera 63 is positioned with its shooting direction facing the side of the product on the product inspection carrier 43 at the first side visual inspection position. The second side visual inspection camera 64 is positioned with its shooting direction facing the side of the product on the product inspection carrier 43 at the second side visual inspection position. The third side visual inspection camera 65 is positioned with its shooting direction facing the side of the product on the product inspection carrier 43 at the third side visual inspection position.

[0051] Furthermore, the product inspection rotating carrier structure 62 includes a carrier platform body 621, a drive structure 622, a product seat 623, and a linkage mechanism 624. The carrier platform body 621 is mounted on the machine base 1. The carrier platform body 621 is provided with a plurality of parallel product seat mounting slots. The product seat 623 is rotatably mounted in the product seat mounting slots. A product is fixedly placed on the product seat 623. The drive structure 622 is also installed at the carrier platform body 621. The output end of the drive structure 622 drives the product seat 623 to rotate synchronously through the linkage mechanism 624. The side appearance inspection camera assembly is positioned facing the product on the product seat 623.

[0052] The linkage mechanism 624 includes a belt 6241 and a guide wheel assembly 6242. The drive structure 622 includes a drive motor. The lower end of the product seat 623 extends out of the carrier platform body 621 and is connected to a rotating wheel 6231. The belt 6241 is sleeved on the output end of the drive motor and the outer side of the rotating wheel 6231. The guide wheel assembly 6242 is installed between adjacent rotating wheels 6231. The belt 6241 is wound between the guide wheel assembly 6242 and the rotating wheel 6231 so that the belt 6241 is tightly attached to the outer side of the rotating wheel 6231.

[0053] The bottom surface of the platform body 621 is located between the drive structure 622 and the rotating wheel, and a belt pulley tension adjustment assembly 625 is also installed. There are two sets of belt pulley tension adjustment assemblies 625, which are respectively arranged on the left and right outer sides of the belt and are in contact with the belt.

[0054] The belt pulley tension adjustment assembly 625 includes an adjustment wheel and an adjustment bolt. The bottom surface of the platform body 621 is provided with horizontal adjustment slots on both sides. An adjustment bolt is fixedly installed in the adjustment slot. An adjustment wheel is installed at the bottom of the adjustment bolt. The belt 6241 is abutted between the adjustment wheels on both sides. The adjustment wheel is fixed at different positions in the adjustment slot by the adjustment bolt.

[0055] Furthermore, the unloading station 7 is provided with a good product unloading station 71 and a defective product unloading station 72. Both the good product unloading station 71 and the defective product unloading station 72 are provided with unloading trolleys for stacking material trays. The main control system controls the handling robot assembly 8 to grab the products to the good product unloading station 71 or the defective product unloading station 72 for screening and unloading according to the detection results.

[0056] like Figure 10 As shown, the inspection method of the above-mentioned lens ring appearance inspection equipment includes the following steps:

[0057] S1. Loading the trolley: Place the material box containing the product on the loading trolley, and then stop the loading trolley at the loading station of the machine for loading.

[0058] S2. Secondary positioning of the material tray: The handling robot arm component grabs the material tray and moves it to the material tray positioning station for secondary positioning.

[0059] S3. The product is loaded to the front appearance inspection station. The handling robot component grabs and transfers the product to the carrier at the turntable loading position of the six-part rotating platform of the front appearance inspection station. After the product on the tray is grabbed and emptied, the handling robot component moves the empty tray to the side conveyor belt and transfers it to the unloading station.

[0060] S4. Product front appearance inspection: The six-part rotating platform rotates to sequentially pass the product through the first, second, third, and fourth front visual inspection positions for appearance visual inspection, obtain the product front appearance information, and send it to the main control system.

[0061] S5. Product bottom appearance inspection: The six-part rotating platform rotates to rotate the product to the unloading position. The handling robot component grabs the product and passes it through the bottom appearance inspection station. The bottom camera set at the bottom appearance inspection station inspects the bottom of the product, obtains the bottom appearance information of the product, and sends it to the main control system.

[0062] S6. Product side appearance inspection: The handling robot arm component grabs the product and places it on the product inspection rotating carrier structure of the four-part rotating platform at the side appearance inspection station. The four-part rotating platform rotates and passes the product through the first side visual inspection position, the second side visual inspection position and the third side visual inspection position in sequence for appearance visual inspection, obtains the product side appearance information and sends it to the main control system.

[0063] S7. Product unloading: The four-part rotating platform rotates to move the product to the loading / unloading position. The main control system controls the handling robot to grab the inspected product to the good product unloading position or the defective product unloading position of the unloading station for screening and unloading.

[0064] This application's machine is sequentially equipped with a front appearance inspection station, a bottom appearance inspection station, and a side appearance inspection station. The front appearance inspection station is equipped with multiple sets of forward vision inspection cameras with different focal lengths and light sources to inspect the appearance information of different positions on the top surface of the product. Then, a handling robot assembly grasps the product and passes it through a lower camera at the bottom appearance inspection station to inspect the bottom appearance information. The product is then transported to the side appearance inspection station, where multiple sets of lateral vision inspection cameras inspect the appearance information of different positions on the side of the product and send the data to the main control system. The main control system controls the handling robot assembly to grasp the product and place it at the unloading station for screening and unloading. This invention can automatically transport products and inspect for appearance defects on the top, bottom, and sides of the product. Intelligent control through the main control system results in more comprehensive measurement data and higher data acquisition accuracy.

[0065] This application features a rotating carrier structure at the inspection station, which can simultaneously rotate multiple products, facilitating appearance inspection of products from different angles and sides, and achieving higher inspection accuracy.

[0066] Furthermore, this application sets up a good product unloading position and a defective product unloading position at the unloading station. The main control system controls the handling robot component to grab the products to the good product unloading position and the defective product unloading position respectively for screening and unloading based on the detection results, which is more intelligent.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

[0068] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0069] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

Claims

1. A lens ring appearance inspection device, characterized in that, The system includes a machine base, which is equipped with a loading station, a tray positioning station, a front appearance inspection station, a bottom appearance inspection station, a side appearance inspection station, and a unloading station. A loading trolley is placed at the loading station, on which trays with products are stacked. A tray positioning station is located on one side of the loading station for positioning the trays. The front appearance inspection station is equipped with a front appearance inspection camera assembly for inspecting the front of the product. The bottom appearance inspection station is equipped with a bottom appearance inspection camera assembly for inspecting the bottom of the product. The side appearance inspection station is equipped with a side appearance inspection camera assembly for inspecting the sides of the product. A transport robot assembly is also provided on the machine base to transport the trays and products sequentially through the loading station, tray positioning station, front appearance inspection station, bottom appearance inspection station, side appearance inspection station, and unloading station. The handling robot assembly includes a first handling robot, a second handling robot, and a third handling robot. The first handling robot is located on one side of the loading station and is used to grab the material tray from the loading station to the material tray positioning station and to grab the product on the material tray to the front appearance inspection station. The second handling robot is used to move the product from the front appearance inspection station through the bottom appearance inspection station until it is placed at the side appearance inspection station. The third handling robot is used to move the product from the side appearance inspection station to the unloading station. The front appearance inspection station is equipped with a six-part rotating platform. Six product inspection carriers for placing products are evenly spaced and fixedly installed on the six-part rotating platform. The platform is arranged sequentially according to the positions of the product inspection carriers: a loading position, a first frontal visual inspection position, a second frontal visual inspection position, a third frontal visual inspection position, a fourth frontal visual inspection position, and a unloading position. The front appearance inspection camera assembly includes a first frontal visual inspection camera, a second frontal visual inspection camera, a third frontal visual inspection camera, and a fourth frontal visual inspection camera. The first frontal visual inspection camera's shooting direction is directly facing the upper surface of the product on the product inspection carrier at the first frontal visual inspection position; the second frontal visual inspection camera's shooting direction is directly facing the upper surface of the product on the product inspection carrier at the second frontal visual inspection position; the third frontal visual inspection camera's shooting direction is directly facing the upper surface of the product on the product inspection carrier at the third frontal visual inspection position; and the fourth frontal visual inspection camera's shooting direction is directly facing the upper surface of the product on the product inspection carrier at the fourth frontal visual inspection position. The first, second, third, and fourth forward vision inspection cameras are each equipped with different focal lengths and light source components according to the product inspection requirements.

2. The lens ring appearance inspection device according to claim 1, characterized in that, A secondary positioning component is provided at the material tray positioning station. The secondary positioning component includes a positioning mounting base, a sensor component, and a push rod component. The positioning mounting base is fixedly installed on the machine base and has a mounting position for placing the material tray. The sensor component and the push rod component are respectively installed on the outer periphery of the mounting position. The sensor component is used to identify the material tray, and the push rod component is used to push the material tray for clamping and positioning.

3. The lens ring appearance inspection device according to claim 2, characterized in that, A conveyor belt for transferring empty material trays is provided on one side of the material tray positioning station. The output end of the conveyor belt is located at the unloading station. A first handling robot is used to move the empty material tray to the conveyor belt, and a third handling robot is used to move the empty material tray to the unloading station.

4. The lens ring appearance inspection device according to claim 3, characterized in that, The bottom surface appearance inspection camera assembly includes a lower camera, a lower camera mounting bracket, and a lower camera light source. The lower camera mounting bracket is fixedly installed on the machine base. The lower camera is vertically installed on the lower camera mounting bracket, and the lower camera light source is also installed on the upper side of the lower camera mounting bracket. The shooting direction of the lower camera lens is set through the lower camera light source and directly facing the bottom surface of the product passing above.

5. The lens ring appearance inspection device according to claim 4, characterized in that, The side appearance inspection station is equipped with a four-part rotating platform. Four product inspection rotating carrier structures for placing products are evenly spaced and fixedly installed on the four-part rotating platform. The platform is arranged sequentially according to the positions of the product inspection rotating carrier structures: loading / unloading positions, a first lateral visual inspection position, a second lateral visual inspection position, and a third lateral visual inspection position. The side appearance inspection camera assembly includes a first lateral visual inspection camera, a second lateral visual inspection camera, and a third lateral visual inspection camera. The first lateral visual inspection camera's shooting direction is directly facing the side of the product on the product inspection carrier at the first lateral visual inspection position; the second lateral visual inspection camera's shooting direction is directly facing the side of the product on the product inspection carrier at the second lateral visual inspection position; and the third lateral visual inspection camera's shooting direction is directly facing the side of the product on the product inspection carrier at the third lateral visual inspection position.

6. The lens ring appearance inspection device according to claim 5, characterized in that, The product inspection rotating carrier structure includes a carrier platform body, a drive structure, a product seat, and a linkage mechanism. The carrier platform body is mounted on a machine base and has several parallel product seat mounting slots. A product seat is rotatably mounted in each of the product seat mounting slots, and a product is fixedly placed on the product seat. The drive structure is also installed on the carrier platform body. The output end of the drive structure drives the product seat to rotate synchronously through the linkage mechanism. The side appearance inspection camera assembly is positioned facing the product on the product seat.

7. The lens ring appearance inspection device according to claim 6, characterized in that, The unloading station is equipped with a good product unloading station and a defective product unloading station. Both the good product unloading station and the defective product unloading station are equipped with unloading trolleys for stacking material trays. The main control system controls the handling robot assembly to grab the products to the good product unloading station or the defective product unloading station for screening and unloading based on the detection results.

8. A detection method for the lens ring appearance inspection device as described in claim 7, characterized in that, Includes the following steps: S1. Loading the trolley: Place the material box containing the product on the loading trolley, and then stop the loading trolley at the loading station of the machine for loading. S2. Secondary positioning of the material tray: The handling robot arm component grabs the material tray and moves it to the material tray positioning station for secondary positioning. S3. The product is loaded to the front appearance inspection station. The handling robot component grabs and transfers the product to the carrier at the turntable loading position of the six-part rotating platform of the front appearance inspection station. After the product on the tray is grabbed and emptied, the handling robot component moves the empty tray to the side conveyor belt and transfers it to the unloading station. S4. Product front appearance inspection: The six-part rotating platform rotates to sequentially pass the product through the first, second, third, and fourth front visual inspection positions for appearance visual inspection, obtain the product front appearance information, and send it to the main control system. S5. Product bottom appearance inspection: The six-part rotating platform rotates to rotate the product to the unloading position. The handling robot component grabs the product and passes it through the bottom appearance inspection station. The bottom camera set at the bottom appearance inspection station inspects the bottom of the product, obtains the bottom appearance information of the product, and sends it to the main control system. S6. Product side appearance inspection: The handling robot arm component grabs the product and places it on the product inspection rotating carrier structure of the four-part rotating platform at the side appearance inspection station. The four-part rotating platform rotates and passes the product through the first side visual inspection position, the second side visual inspection position and the third side visual inspection position in sequence for appearance visual inspection, obtains the product side appearance information and sends it to the main control system. S7. Product unloading: The four-part rotating platform rotates to move the product to the loading / unloading position. The main control system controls the handling robot to grab the inspected product to the good product unloading position or the defective product unloading position of the unloading station for screening and unloading.

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