Lens bracket appearance detection equipment and detection method thereof

Abstract

The invention provides lens bracket appearance detection equipment and a detection method thereof.The lens bracket appearance detection equipment comprises a machine table, and the machine table is provided with a feeding station, a tray positioning station, a product overturning station, a product front face visual detection station, a product secondary overturning station, a product bottom face visual detection station and a discharging station; a product overturning mechanism used for overturning products by 180 degrees till the front faces of the products face upwards is arranged at the product overturning station, a product secondary overturning mechanism used for overturning the products by 180 degrees till the bottom faces of the products face upwards is arranged at the product secondary overturning station, and a screening area used for screening and discharging the products is further arranged at the discharging station. The machine table is further provided with a carrying mechanical arm assembly for carrying the trays and the products. According to the invention, visual detection can be automatically carried out on the front surface and the bottom surface of the product, the measurement data is more comprehensive, the intelligent degree is higher, the detection efficiency is higher, and the detection result is more accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of visual inspection, and in particular to a lens bracket appearance inspection device and an inspection method thereof. Background Art

[0002] Appearance inspection is a detection method mainly used to quickly identify the appearance defects of samples. The appearance inspection system is mainly used to quickly identify the appearance defects of samples, such as pits, cracks, warping, gaps, stains, sand, burrs, bubbles, uneven color, etc. The inspected samples can be transparent or opaque. In the past, product appearance inspection was generally done with the naked eye, so there is a possibility that human factors may lead to inconsistent measurement standards, and long-term inspections may lead to misjudgments due to visual fatigue. With the in-depth cooperation of computer technology and optical, mechanical, electrical and other technologies, it has the characteristics of fast and accurate detection.

[0003] Most of the existing material inspection equipment relies on a set of cameras to detect the appearance defects of the materials, which results in incomplete material inspection and easy to produce defective products. Using multiple sets of cameras for inspection on multiple machines takes up a lot of space and is not convenient for visual inspection of the front and bottom of the product. It requires manual loading and unloading, takes a long time to inspect, has low production efficiency, and is not highly intelligent and automated.

[0004] There is a need for a lens bracket appearance inspection device and an inspection method with a higher degree of automation and more accurate and comprehensive appearance inspection, which can solve the above-mentioned problems. Summary of the invention

[0005] The present invention provides a lens bracket appearance inspection device and an inspection method thereof, which solves the problems that the existing visual inspection equipment is inconvenient to perform visual inspection on products at multiple angles, has a low degree of inspection automation, and has low inspection efficiency by technically transforming the existing appearance inspection device.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A lens bracket appearance inspection device comprises a machine platform, on which a loading station, a tray positioning station, a product turning station, a product front visual inspection station, a product secondary turning station, a product bottom visual inspection station and a unloading station are respectively arranged, trays with products placed on them are stacked at the loading station, a tray positioning station for positioning the trays is arranged on one side of the loading station, a product turning mechanism for turning the product 180 degrees so that the front side of the product faces upward is arranged at the product turning station, a product front visual inspection component for inspecting the front side of the product is arranged at the product front visual inspection station, a product secondary turning mechanism for turning the product 180 degrees so that the bottom side of the product faces upward is arranged at the product secondary turning station, a product bottom surface visual inspection component for inspecting the bottom side of the product is arranged at the product bottom surface visual inspection station, a screening area for screening and unloading products is also arranged at the unloading station, and a transporting robot component for transporting trays and products is also arranged on the machine platform.

[0008] Preferably, a secondary positioning assembly is provided at the tray positioning station, and the secondary positioning assembly includes a positioning mounting seat, a sensor assembly and a push rod assembly. The positioning mounting seat is fixedly mounted on the machine platform, and a mounting position for placing the tray is provided on the positioning mounting seat. The sensor assembly and the push rod assembly are respectively installed on the outer peripheral 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 to clamp and position.

[0009] A conveyor belt for transferring empty trays is provided on one side of the tray positioning station, and the output end of the conveyor belt is provided at the unloading station. The transport robot assembly is used to transport the empty trays to the conveyor belt or to the unloading station, and a positioning push rod assembly for positioning the empty tray is provided at the end of the conveyor belt.

[0010] Preferably, the conveyor belt is disconnected in the middle position and a first conveyor belt and a second conveyor belt are arranged in sequence, an empty tray transfer position is arranged between the first conveyor belt and the second conveyor belt, the empty tray transfer position is provided with a lifting slot for stacking empty trays, and tray grabbing mechanisms for carrying empty trays are also arranged on both sides of the empty tray transfer position.

[0011] Preferably, the product flipping mechanism includes a fixed mounting frame, a flipping plate, a product fixing seat, a product fixing component, a flipping drive mechanism and a product placement position. A fixed mounting frame is installed on the machine platform, and a product placement position and a flipping drive mechanism are installed on the fixed mounting frame. A product mounting seat is provided on the product placement position, and a flipping plate is installed on the output end of the flipping drive mechanism. A product fixing seat and a product fixing component for fixing the product on the product fixing seat are installed on the flipping plate. The flipping drive mechanism is used to drive the flipping plate to rotate close to or away from the product placement position.

[0012] Preferably, the flipping drive mechanism includes a rack-driven cylinder and a movable rack. A rotating shaft is fixedly installed at the side of the flipping plate. The rotating shaft is rotatably installed on a fixed mounting frame, and an external tooth groove is provided on the outer side of the rotating shaft. A rack-driven cylinder is installed on the fixed mounting frame, and a movable rack is horizontally connected to the output end of the rack-driven cylinder. The movable rack and the external tooth groove of the rotating shaft are meshed with each other.

[0013] Preferably, the product placement position is also provided with a product pitch changing mechanism for automatically adjusting the product spacing, the product pitch changing mechanism includes a horizontal slide rail, a product mounting seat, a linkage assembly and a pitch changing drive assembly, the product placement position is fixedly installed with a horizontal slide rail, a plurality of product mounting seats are slidably installed on the horizontal slide rail, the product mounting seats are connected via a linkage assembly, and the pitch changing drive assembly is used to drive the product mounting seats to move closer to and away from each other.

[0014] Preferably, the product front visual inspection station is provided with a horizontal drive assembly, a product inspection axis structure, a gantry and a product front visual inspection assembly. The horizontal drive assembly and the gantry are installed on the machine platform. The output end of the horizontal drive assembly is connected to the product inspection axis structure for fixing the product, and the gantry is installed with a product front visual inspection assembly for inspecting the front of the product.

[0015] Preferably, the product detection axis structure includes a fixed mounting plate, a product flipping drive assembly, a product mounting frame, a product rotation drive assembly and a product seat, the output end of the horizontal drive assembly is installed with a fixed mounting plate, the product mounting frame is rotatably installed on the fixed mounting plate, the fixed mounting plate is also installed with a product flipping drive assembly, the output end of the product flipping drive assembly is connected to the product mounting frame, the product mounting frame is installed with a product rotation drive assembly, and the output end of the product rotation drive assembly is installed with a product seat for placing products.

[0016] Preferably, the product bottom surface visual inspection station is arranged between the product front surface visual inspection station and the product secondary flipping station, and the product bottom surface visual inspection component includes a lower camera, and the lower camera lens is arranged vertically upward, and the handling robot assembly passes directly above the lower camera lens when handling the product.

[0017] Preferably, the screening area of ​​the unloading station is provided with a good product unloading position, a front defective product unloading position and a back defective product unloading position. The main control system controls the handling robot assembly to grab the products to the good product unloading position, the front defective product unloading position and the back defective product unloading position for screening and unloading according to the detection results.

[0018] A method for detecting a lens bracket appearance detection device comprises the following steps:

[0019] S1. Product loading: The trays with products are stacked and placed at the loading station. The lifting platform set at the loading station rises, and the handling robot assembly grabs the trays in turn for loading;

[0020] S2, secondary positioning of the tray: the handling robot assembly grabs the tray to the tray positioning station for secondary positioning;

[0021] S3. The product is loaded to the product flipping station. The handling robot assembly grabs the product and transfers it to the product fixing seat of the product flipping station. The flipping drive mechanism drives the product fixing seat to flip, flips the product 180 degrees and transfers it to the product mounting seat, so that the product is placed facing up. After the product on the tray is grabbed and emptied, the handling robot assembly moves the empty tray to the conveyor belt on one side and transfers it to the unloading station;

[0022] S4, product front appearance inspection, the handling robot assembly grabs the product from the product mounting seat to the product inspection axis structure of the product front visual inspection station, the horizontal drive assembly drives the product inspection axis structure to move back and forth through the bottom of the gantry, and at the same time, the product flip drive assembly of the product inspection axis structure drives the product to flip and swing 180 degrees, and the product rotation drive assembly of the product inspection axis structure drives the product to rotate 360 ​​degrees horizontally. When it rotates to the set angle, the product front and side are visually inspected by the product front visual inspection assembly installed on the gantry and the inspection information is sent to the main control system;

[0023] S5, visual inspection of the bottom surface of the product. The handling robot assembly picks up the product and passes it directly above the lower camera set at the visual inspection station of the bottom surface of the product. The lower camera performs visual inspection on the bottom surface of the product passing through and sends the inspection information to the main control system.

[0024] S6, the product is flipped twice, the handling robot assembly places the product at the product secondary flipping station and flips it 180 degrees through the product secondary flipping mechanism, so that the back of the product is facing upward;

[0025] S7, product unloading, the handling robot assembly moves the empty tray on the conveyor belt to the unloading station, and the main control system controls the handling robot assembly according to the product inspection data to place the products at the good product unloading position, the front defective product unloading position or the back defective product unloading position in the screening area for screening and unloading.

[0026] The beneficial effects of the present invention are:

[0027] The present invention can automatically transport products, detect appearance defects on the top, bottom and side surfaces of products, and perform intelligent control through a main control system, so that the measurement data is more comprehensive and the data acquisition accuracy is higher.

[0028] The present invention is provided with a product flipping mechanism and a product secondary flipping mechanism on the machine platform. When the product is placed in the tray, it is in a state where the back side is facing upward. The product flipping mechanism can flip the product 180 degrees to a state where the front side is facing upward, and then transport it to the product front visual inspection station through a manipulator for front visual inspection. The transporting manipulator assembly then grabs the product from directly above the lower camera set at the product bottom visual inspection station for bottom visual inspection. The product secondary flipping mechanism can flip the product 180 degrees again to a state where the back side is facing upward, so that the transporting manipulator assembly can transfer the product to the tray of the unloading station for placing the product. The present invention can automatically flip the product, facilitate visual inspection of the front and bottom surfaces of the product, has a higher degree of intelligence, higher detection efficiency, and more accurate detection results.

[0029] The present invention is provided with a product inspection axis structure at the visual inspection station on the front side of the product. The external main control system can control the product flipping drive component and the product rotation drive component to drive the product to flip, swing and rotate 360 ​​degrees at the same time, which is convenient for the visual inspection camera to take pictures, greatly improves the inspection efficiency, has a higher degree of intelligence, and can control the product to flip, swing and rotate 360 ​​degrees, can freely display more angles, and has a better inspection effect.

[0030] In addition, the present invention provides a good product unloading position, a front defective product unloading position or a back defective product unloading position at the unloading station. The main control system controls the handling robot assembly to grab the products to the good product unloading position, the front defective product unloading position or the back defective product unloading position for screening and unloading according to the detection results, which has a higher degree of intelligence. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0032] Figure 2 It is a schematic diagram of the top view of the structure of the present invention;

[0033] Figure 3 It is a schematic diagram of the structure of the secondary positioning component of the present invention;

[0034] Figure 4 It is a schematic diagram of the structure of the flipping mechanism of the product of the present invention;

[0035] Figure 5 This is a schematic diagram of the structure of the flip driving mechanism of the product of the present invention;

[0036] Figure 6 It is a structural schematic diagram of the pitch-changing mechanism of the product of the present invention;

[0037] Figure 7 This is a schematic diagram of the structure of the visual inspection station for the front side of the product of the present invention;

[0038] Figure 8It is a three-dimensional structural diagram of the detection shaft structure of the product of the present invention;

[0039] Fig. 9 It is a schematic diagram of the side structure of the detection shaft structure of the product of the present invention;

[0040] Fig.10 It is a structural schematic diagram of the blanking station of the present invention;

[0041] Fig.11 It is a schematic flow chart of the detection method of the present invention;

[0042] Description of the accompanying figures: Machine 1, conveyor belt 11, empty tray transfer position 12, tray grabbing mechanism 13, tray positioning push rod assembly 14, loading station 2, tray positioning station 3, secondary positioning assembly 31, positioning mounting seat 311, push rod assembly 312, product flipping station 4, product flipping mechanism 41, fixed mounting frame 411, flip plate 412, rotating shaft 4121, external tooth groove 4122, product fixing seat 413, product fixing assembly 414, flipping drive mechanism 415, rack drive cylinder 4151, movable rack 4152, product placement position 416, product pitch change mechanism 417, horizontal slide rail 4171, product mounting seat 4172, linkage assembly 4173, fixed end 41731, movable end 41732, connecting strip 41733, movable through groove 41734, variable pitch drive assembly 4174, product front visual inspection station 5, horizontal drive assembly 51, product inspection shaft structure 52, fixed mounting plate 521, product flip drive assembly 522, flip drive motor 5221, rotating assembly 5222, rotating bearing 52221, bearing mounting seat 52222, flip connecting plate 5223, product mounting frame 523, product rotation drive assembly 524, product seat 525, gantry 53, product front visual inspection assembly 54, product secondary flip station 6, product secondary flip mechanism 61, product bottom surface visual inspection station 7, product bottom surface visual inspection assembly 71, unloading station 8, good product unloading position 81, front defective product unloading position 82, back defective product unloading position 83, handling robot assembly 9, material tray 10. DETAILED DESCRIPTION

[0043] The specific contents of the present invention are described in detail below with reference to the accompanying drawings and embodiments.

[0044] See also Figure 1-11As shown, the present invention provides a lens bracket appearance inspection device, including a machine platform 1, on which a loading station 2, a tray positioning station 3, a product turning station 4, a product front visual inspection station 5, a product secondary turning station 6, a product bottom visual inspection station 7 and a unloading station 8 are respectively arranged, a tray 10 with products placed on it is stacked at the loading station 2, a tray positioning station 3 for positioning the tray 10 is arranged on one side of the loading station 2, and a product turning station 4 is provided for turning the product 180 degrees to the front of the product. A product flipping mechanism 41 is arranged upward, a product front visual inspection component 54 for inspecting the front of the product is arranged at the product front visual inspection station 5, a product secondary flipping mechanism 61 for flipping the product 180 degrees to a position where the bottom of the product faces upward is arranged at the product secondary flipping station 6, a product bottom surface visual inspection component 71 for inspecting the bottom of the product is arranged at the product bottom surface visual inspection station 7, a screening area for screening and unloading the products is also arranged at the unloading station 8, and a conveying tray 10 and a product conveying robot component 9 are also arranged on the machine 1.

[0045] Furthermore, in order to position the material tray 10 and facilitate the handling robot assembly 9 to accurately grasp the product, a secondary positioning assembly 31 is provided at the material tray positioning station 3, and the secondary positioning assembly 31 includes a positioning mounting seat 311, a sensor assembly and a push rod assembly 312. The positioning mounting seat 311 is fixedly mounted on the machine 1, and a mounting position for placing the material tray 10 is provided on the positioning mounting seat 311. The sensor assembly and the push rod assembly 312 are respectively installed on the outer peripheral side of the mounting position. The sensor assembly is used to identify the material tray 10, and the push rod assembly 312 is used to push the material tray 10 for clamping and positioning. The push rod assembly 312 pushes the material tray 10 to be fixed, so that the material tray 10 is in a limited position, and the positioning and grasping of the product is more accurate.

[0046] A conveyor belt 11 for transferring empty trays 10 is provided on one side of the tray positioning station 3, and the output end of the conveyor belt 11 is provided at the unloading station 8. The transport robot assembly 9 is used to transport the empty tray 10 to the conveyor belt 11 or to the unloading station 8, and a tray positioning push rod assembly 14 for positioning the empty tray 10 is provided at the end of the conveyor belt 11.

[0047] Furthermore, in order to prevent the empty trays 10 from piling up at the end of the transmission belt, the conveyor belt 11 is disconnected at the middle position and the first conveyor belt 11 and the second conveyor belt 11 are sequentially arranged, and an empty tray transfer position 12 is arranged between the first conveyor belt 11 and the second conveyor belt 11, and the empty tray transfer position 12 is provided with a lifting slot for stacking the empty trays 10, and tray grabbing mechanisms 13 for carrying the empty trays 10 are also arranged on both sides of the empty tray transfer position 12. The lifting slots arranged at the empty tray transfer position 12 can temporarily store the empty trays 10, and a tray 10 identification sensor is arranged at the end of the conveyor belt 11, which can identify whether there is a tray 10, and the tray grabbing mechanism 13 can grab the tray 10 and transport it to the second conveyor belt 11 to transfer it to the unloading station 8.

[0048] Furthermore, the product flipping mechanism 41 includes a fixed mounting frame 411, a flipping plate 412, a product fixing seat 413, a product fixing component 414, a flipping drive mechanism 415 and a product placement position 416. The fixed mounting frame 411 is installed on the machine 1, and the product placement position 416 and the flipping drive mechanism 415 are installed on the fixed mounting frame 411. The product placement position 416 is provided with a product mounting seat 4172, and the output end of the flipping drive mechanism 415 is installed with a flipping plate 412. The flipping plate 412 is installed with a product fixing seat 413 and a product fixing component 414 for fixing the product on the product fixing seat 413. The flipping drive mechanism 415 is used to drive the flipping plate 412 to rotate close to or away from the product placement position 416. During the flipping process, the product is fixed and clamped by the product fixing component 414 at the product fixing seat 413. After flipping, the product fixing component 414 is released and the product is installed on the product mounting seat 4172 at the product placement position 416 to achieve automatic flipping. The degree of intelligent automation is higher, and the product is fixed more stably and with higher positioning accuracy during the flipping process, which will not cause product displacement and affect the placement effect.

[0049] Furthermore, the flipping drive mechanism 415 includes a rack drive cylinder 4151 and a movable rack 4152. A rotating shaft 4121 is fixedly installed at the side of the flipping plate 412. The rotating shaft 4121 is rotatably installed on the fixed mounting frame 411, and an outer tooth groove 4122 is provided on the outer side of the rotating shaft 4121. The rack drive cylinder 4151 is installed on the fixed mounting frame 411. The output end of the rack drive cylinder 4151 is horizontally connected to a movable rack 4152. The movable rack 4152 and the outer tooth groove 4122 of the rotating shaft 4121 are meshed with each other. When the rack drive cylinder 4151 drives the movable rack 4152 to move in the horizontal direction, the outer tooth groove 4122 of the rotating shaft 4121 moves along the movable rack 4152, thereby realizing the flipping of the flipping plate 412. The product fixing seat 413 and the product mounting seat 4172 are arranged in a one-to-one correspondence.

[0050] Furthermore, in order to adjust the product spacing, a product distance changing mechanism 417 for automatically adjusting the product spacing is also provided on the product placement position 416, and the product distance changing mechanism 417 includes a horizontal slide rail 4171, a product mounting seat 4172, a linkage assembly 4173 and a distance changing drive assembly 4174. A horizontal slide rail 4171 is fixedly installed on the product placement position 416, and a plurality of product mounting seats 4172 are slidably installed on the horizontal slide rail 4171. The product mounting seats 4172 are connected via a linkage assembly 4173, and the distance changing drive assembly 4174 is used to drive the product mounting seats 4172 to move closer to or away from each other.

[0051] The linkage assembly 4173 includes a fixed end 41731, a movable end 41732 and a connecting strip 41733. The fixed end 41731 and the movable end 41732 are respectively mounted on two opposite outer side surfaces of the product mounting seat 4172. Each fixed end 41731 is movably connected with the movable end 41732 on the adjacent product mounting seat through the connecting strip 41733. The connecting strip 41733 is provided with a movable through slot 41734. The movable end 41732 is movably arranged along the movable through slot 41734. When the movable end 41732 moves in the movable through slot 41734, it will push the corresponding product mounting seat 4172 to move along the horizontal slide rail 4171 when it contacts the inner groove walls on both sides of the movable through slot 41734.

[0052] Furthermore, the product front visual inspection station 5 is provided with a horizontal drive component 51, a product inspection axis structure 52, a gantry 53 and a product front visual inspection component 54, and the horizontal drive component 51 and the gantry 53 are installed on the machine 1, and the output end of the horizontal drive component 51 is connected to the product inspection axis structure 52 for fixing the product, and the gantry 53 is installed with a product front visual inspection component 54 for inspecting the front of the product.

[0053] Two rows of horizontal drive components 51 are provided on the machine 1, and the gantry 53 is also provided with horizontal drive and vertical drive for controlling the activity of the product front visual inspection component 54, so as to facilitate the control of the product front visual inspection component 54 to inspect the products on the two rows of horizontal drive components 51.

[0054] Furthermore, the product detection axis structure 52 includes a fixed mounting plate 521, a product flipping drive assembly 522, a product mounting frame 523, a product rotation drive assembly 524 and a product seat 525. The output end of the horizontal drive assembly 51 is installed with a fixed mounting plate 521, and the product mounting frame 523 is rotatably installed on the fixed mounting plate 521. The fixed mounting plate 521 is also installed with a product flipping drive assembly 522. The output end of the product flipping drive assembly 522 is connected to the product mounting frame 523. The product mounting frame 523 is installed with a product rotation drive assembly 524. The output end of the product rotation drive assembly 524 is installed with a product seat 525 for placing products.

[0055] The product flipping drive assembly 522 includes a flipping drive motor 5221, a rotating assembly 5222 and a flipping connecting plate 5223. The flipping drive motor 5221 is mounted on the fixed mounting plate 521. The flipping connecting plates 5223 are fixedly connected at both ends of the product mounting frame 523. The flipping connecting plates 5223 are movably connected to the fixed mounting plate 521 through the rotating assembly 5222, and the output end of the flipping drive motor 5221 is drivingly connected to the flipping connecting plate 5223. The upper end of the flipping connecting plate 5223 is fixedly connected to the product mounting frame 523. The product mounting frame 523 and the fixed mounting plate 521 form a square frame structure.

[0056] The rotating assembly 5222 includes a rotating bearing 52221 and a bearing mounting seat 52222. The bearing mounting seats 52222 are fixedly mounted on both sides of the fixed mounting plate 521. The rotating bearing 52221 is movably mounted on the bearing mounting seat 52222. The flip connecting plate 5223 is rotatably connected to the bearing mounting seat 52222 through the rotating bearing 52221. The output end of the flip driving motor 5221 is connected to the flip connecting plate 5223 through the rotating bearing 52221.

[0057] Furthermore, the product bottom surface visual inspection station 7 is arranged between the product front surface visual inspection station 5 and the product secondary flipping station 6, and the product bottom surface visual inspection component 71 includes a lower camera, and the lower camera lens is arranged vertically upward, and the transport robot assembly 9 passes directly above the lower camera lens when transporting the product.

[0058] The product secondary flipping mechanism 61 arranged at the product secondary flipping station 6 adopts the same structural design as the product flipping mechanism 41 , and can realize 180-degree flipping of the product, making it convenient for the handling robot assembly 9 to carry the product to the material tray 10 .

[0059] Furthermore, a good product unloading position 81, a front defective product unloading position 82 and a back defective product unloading position 83 are provided in the screening area of ​​the unloading station 8. The main control system controls the handling robot assembly 9 to grab the products to the good product unloading position 81, the front defective product unloading position 82 and the back defective product unloading position 83 for screening and unloading according to the detection results.

[0060] A detection method of the above-mentioned lens bracket appearance detection device comprises the following steps:

[0061] S1, product loading, stacking the trays 10 with products on the loading station 2, raising the lifting platform provided at the loading station 2, and the handling manipulator assembly 9 grabs the trays 10 in turn for loading;

[0062] S2, secondary positioning of the tray 10, the handling robot assembly 9 grabs the tray 10 to the tray positioning station 3 for secondary positioning;

[0063] S3, the product is loaded to the product turning station 4, the handling robot assembly 9 grabs and transfers the product to the product fixing seat 413 of the product turning station 4, and the turning drive mechanism 415 drives the product fixing seat 413 to turn over, turning the product 180 degrees and transferring it to the product mounting seat 4172, so that the front of the product is placed facing up. After the product on the tray 10 is grabbed and emptied, the handling robot assembly 9 moves the empty tray 10 to the conveyor belt 11 on one side and transfers it to the unloading station 8;

[0064] S4, product front appearance inspection, the handling robot assembly 9 grabs the product from the product mounting seat 4172 to the product inspection axis structure 52 of the product front visual inspection station 5, the horizontal drive assembly 51 drives the product inspection axis structure 52 to move back and forth and pass under the gantry 53, and at the same time, the product flipping drive assembly 522 of the product inspection axis structure 52 drives the product to flip and swing 180 degrees, and the product rotation drive assembly 524 of the product inspection axis structure 52 drives the product to rotate 360 ​​degrees horizontally. When it rotates to the set angle, the product front and side are visually inspected by the product front visual inspection assembly 54 installed on the gantry 53 and the inspection information is sent to the main control system;

[0065] S5, visual inspection of the bottom surface of the product. The handling robot assembly 9 picks up the product and passes it directly above the lower camera set at the visual inspection station 7 for the bottom surface of the product. The lower camera performs visual inspection on the bottom surface of the product passing through and sends the inspection information to the main control system.

[0066] S6, the product is flipped for the second time, the handling robot assembly 9 places the product at the product secondary flipping station 6 and flips it 180 degrees through the product secondary flipping mechanism 61, so that the back of the product is placed upward;

[0067] S7, product unloading, the handling robot assembly 9 transports the empty material tray 10 on the conveyor belt 11 to the unloading station 8, and the main control system controls the handling robot assembly 9 according to the product detection data to place the product at the good product unloading position 81, the front defective product unloading position 82 or the back defective product unloading position 83 in the screening area for screening and unloading.

[0068] In step S3, the product distance changing mechanism 417 provided at the flipping station controls the product mounting seats 4172 to move away from each other, adjusts the product spacing, and facilitates the subsequent handling robot assembly 9 to transport the product to the product detection axis structure 52 with a larger spacing.

[0069] In step S6, a variable distance mechanism for adjusting the spacing between products is provided at the handling robot assembly 9, and the variable distance mechanism has the same structural design as the product variable distance mechanism 417 provided at the flipping station. After the handling robot assembly 9 grabs the product, the variable distance mechanism is used to shorten the product spacing, and then the product is transferred to the secondary flipping station 6 for flipping.

[0070] This application can automatically transport products, detect appearance defects on the top, bottom and sides of products, and perform intelligent control through the main control system. The measurement data is more comprehensive and the data acquisition accuracy is higher.

[0071] The present application is provided with a product flipping mechanism 41 and a product secondary flipping mechanism 61 on the machine 1. When the product is placed in the tray 10, it is in a state where the back is facing upward. The product flipping mechanism 41 can flip the product 180 degrees to a state where the front is facing upward, and then transport it to the product front visual inspection station 5 by a manipulator for front visual inspection. The transporting manipulator assembly 9 then grabs the product and passes it directly above the lower camera set at the product bottom visual inspection station 7 for bottom visual inspection. The product secondary flipping mechanism 61 can flip the product 180 degrees again to a state where the back is facing upward, which is convenient for the transporting manipulator assembly 9 to transfer the product to the tray 10 of the unloading station 8 for placing on the plate. The present invention can automatically flip the product, facilitate visual inspection of the front and bottom of the product, has a higher degree of intelligence, higher inspection efficiency, and more accurate inspection results.

[0072] The present application is provided with a product inspection axis structure 52 at the product front visual inspection station 5. The external main control system can control the product flipping drive component 522 and the product rotation drive component 524 to drive the product to flip, swing and rotate 360 ​​degrees at the same time, which is convenient for the visual inspection camera to shoot, greatly improves the inspection efficiency, has a higher degree of intelligence, and can control the product to flip, swing and rotate 360 ​​degrees, can freely display more angles, and has better inspection effects.

[0073] In addition, the present application provides a good product unloading position 81, a front defective product unloading position 82 or a back defective product unloading position 83 at the unloading station 8, and the main control system controls the handling robot assembly 9 to grab the products to the good product unloading position 81, the front defective product unloading position 82 or the back defective product unloading position 83 for screening and unloading according to the detection results, which has a higher degree of intelligence.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

[0075] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0076] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A lens bracket appearance inspection device, characterized in that: The machine comprises a loading station, a tray positioning station, a product turning station, a product front visual inspection station, a product secondary turning station, a product bottom visual inspection station and a unloading station, respectively provided with a loading station, trays with products placed on them are stacked, a tray positioning station for positioning the trays is provided on one side of the loading station, a product turning mechanism for turning the product 180 degrees so that the front side of the product faces upward is provided at the product turning station, a product front visual inspection component for inspecting the front side of the product is provided at the product front visual inspection station, a product secondary turning mechanism for turning the product 180 degrees so that the bottom side of the product faces upward is provided at the product secondary turning station, a product bottom surface visual inspection component for inspecting the bottom side of the product is provided at the product bottom surface visual inspection station, a screening area for screening and unloading products is also provided at the unloading station, and a transporting robot component for transporting trays and products is also provided on the machine.

2. The lens bracket appearance inspection device according to claim 1, characterized in that: A secondary positioning assembly is provided at the tray positioning station, and the secondary positioning assembly includes a positioning mounting seat, a sensor assembly and a push rod assembly. The positioning mounting seat is fixedly mounted on the machine platform, and a mounting position for placing the tray is provided on the positioning mounting seat. The sensor assembly and the push rod assembly are respectively installed on the outer peripheral 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 to clamp and position; A conveyor belt for transferring empty trays is provided on one side of the tray positioning station, and the output end of the conveyor belt is provided at the unloading station. The transport robot assembly is used to transport the empty trays to the conveyor belt or to the unloading station, and a positioning push rod assembly for positioning the empty tray is provided at the end of the conveyor belt.

3. The lens bracket appearance inspection device according to claim 1, characterized in that: The product flipping mechanism includes a fixed mounting frame, a flipping plate, a product fixing seat, a product fixing component, a flipping drive mechanism and a product placement position. The fixed mounting frame is installed on the machine platform, and the product placement position and the flipping drive mechanism are installed on the fixed mounting frame. The product placement position is provided with a product mounting seat, and a flipping plate is installed on the output end of the flipping drive mechanism. The product fixing seat and the product fixing component for fixing the product on the product fixing seat are installed on the flipping plate. The flipping drive mechanism is used to drive the flipping plate to rotate close to or away from the product placement position.

4. The lens bracket appearance inspection device according to claim 3, characterized in that: The flipping drive mechanism includes a rack drive cylinder and a movable rack. A rotating shaft is fixedly installed at the side of the flip plate. The rotating shaft is rotatably installed on the fixed mounting frame, and an external tooth groove is arranged on the outer side of the rotating shaft. A rack drive cylinder is installed on the fixed mounting frame. The output end of the rack drive cylinder is horizontally connected to a movable rack. The movable rack and the external tooth groove of the rotating shaft are meshed with each other.

5. The lens bracket appearance inspection device according to claim 3, characterized in that: The product placement position is also provided with a product pitch-changing mechanism for automatically adjusting the product spacing, the product pitch-changing mechanism includes a horizontal slide rail, a product mounting seat, a linkage assembly and a pitch-changing drive assembly, the product placement position is fixedly provided with a horizontal slide rail, a plurality of product mounting seats are slidably installed on the horizontal slide rail, the product mounting seats are connected via a linkage assembly, and the pitch-changing drive assembly is used to drive the product mounting seats to move closer to or further away from each other.

6. The lens bracket appearance inspection device according to claim 1, characterized in that: The product front visual inspection station is provided with a horizontal drive assembly, a product inspection axis structure, a gantry and a product front visual inspection assembly. The horizontal drive assembly and the gantry are installed on the machine platform. The output end of the horizontal drive assembly is connected to the product inspection axis structure for fixing the product. The product front visual inspection assembly for inspecting the front of the product is installed on the gantry.

7. The lens bracket appearance inspection device according to claim 6, characterized in that: The product detection axis structure includes a fixed mounting plate, a product flipping drive assembly, a product mounting frame, a product rotation drive assembly and a product seat. The output end of the horizontal drive assembly is installed with a fixed mounting plate, and the product mounting frame is rotatably mounted on the fixed mounting plate. The fixed mounting plate is also installed with a product flipping drive assembly. The output end of the product flipping drive assembly is connected to the product mounting frame. The product mounting frame is installed with a product rotation drive assembly, and the output end of the product rotation drive assembly is installed with a product seat for placing products.

8. The lens bracket appearance inspection device according to claim 1, characterized in that: The product bottom surface visual inspection station is arranged between the product front surface visual inspection station and the product secondary flipping station. The product bottom surface visual inspection component includes a lower camera. The lower camera lens is arranged vertically upward. The transport robot assembly passes directly above the lower camera lens when transporting the product.

9. The lens bracket appearance inspection device according to claim 1, characterized in that: The screening area of ​​the unloading station is provided with a good product unloading position, a front defective product unloading position and a back defective product unloading position. The main control system controls the handling robot assembly to grab the products to the good product unloading position, the front defective product unloading position and the back defective product unloading position for screening and unloading according to the detection results.

10. A method for detecting a lens bracket appearance detection device as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Product loading: The trays with products are stacked and placed at the loading station. The lifting platform set at the loading station rises, and the handling robot assembly grabs the trays in turn for loading; S2, secondary positioning of the tray: the handling robot assembly grabs the tray to the tray positioning station for secondary positioning; S3. The product is loaded to the product flipping station. The handling robot assembly grabs the product and transfers it to the product fixing seat of the product flipping station. The flipping drive mechanism drives the product fixing seat to flip, flips the product 180 degrees and transfers it to the product mounting seat, so that the product is placed facing up. After the product on the tray is grabbed and emptied, the handling robot assembly moves the empty tray to the conveyor belt on one side and transfers it to the unloading station; S4, product front appearance inspection, the handling robot assembly grabs the product from the product mounting seat to the product inspection axis structure of the product front visual inspection station, the horizontal drive assembly drives the product inspection axis structure to move back and forth through the bottom of the gantry, and at the same time, the product flip drive assembly of the product inspection axis structure drives the product to flip and swing 180 degrees, and the product rotation drive assembly of the product inspection axis structure drives the product to rotate 360 ​​degrees horizontally. When it rotates to the set angle, the product front and side are visually inspected by the product front visual inspection assembly installed on the gantry and the inspection information is sent to the main control system; S5, visual inspection of the bottom surface of the product. The handling robot assembly picks up the product and passes it directly above the lower camera set at the visual inspection station of the bottom surface of the product. The lower camera performs visual inspection on the bottom surface of the product passing through and sends the inspection information to the main control system. S6, the product is flipped twice, the handling robot assembly places the product at the product secondary flipping station and flips it 180 degrees through the product secondary flipping mechanism, so that the back of the product is facing upward; S7, product unloading, the handling robot assembly moves the empty tray on the conveyor belt to the unloading station, and the main control system controls the handling robot assembly according to the product inspection data to place the products at the good product unloading position, the front defective product unloading position or the back defective product unloading position in the screening area for screening and unloading.

Images