PP cup inspection machine for contact lenses

Abstract

The utility model relates to a PP cup inspection machine for contact lenses, and relates to the technical field of contact lens production, the PP cup inspection machine comprises a conveying unit and a detection platform, the detection platform is provided with a feeding station, an inspection station and a discharging station, the detection platform is rotatably provided with a transparent conveying plate, the conveying unit is used for conveying PP cups, the detection platform is provided with a feeding unit, and the feeding unit is used for conveying the PP cups. The transparent conveying plate can drive the PP cups to move to the feeding station, the inspection station and the discharging station. The detection platform is provided with a visual collection and inspection unit, the visual collection and inspection unit collects images of PP cups to be inspected and judges whether the PP cups to be inspected are qualified or not, the detection platform is provided with an NG material belt, a qualified material belt and a discharging unit at a discharging station, the visual collection and inspection unit controls the discharging unit to guide the qualified PP cups to enter the qualified material belt, and the discharging unit is connected with the discharging unit. Or the unqualified PP cups are guided to enter the NG material belt. According to the invention, more than 120 contact lens PP cups can be inspected per minute, and the inspection speed and the inspection efficiency of the PP cups are improved.

Description

Technical Field

[0001] The present application relates to the technical field of contact lens production, and in particular to a PP cup inspection machine for contact lenses. Background Art

[0002] Contact lenses, also known as corneal contact lenses, are lenses worn on the cornea of ​​the eye to correct vision or protect the eyes. With the increasing use of contact lenses, PP (polypropylene) cups, a type of polypropylene packaging material that can be used to store contact lenses, are widely used to store contact lenses with a short disposal cycle.

[0003] During the PP cup production process, the quality of the PP cups needs to be inspected. The inspection contents mainly include black spots, burrs, warping, etc., so as to ensure that the quality of the PP cups sold are qualified. The current inspection of the quality of PP cups is mainly carried out through manual observation, and the inspection speed is 20 per minute, which leads to slow inspection speed and low inspection efficiency. Utility Model Content

[0004] In order to improve the problem of slow inspection speed and low inspection efficiency of PP cups caused by manual inspection of PP cups, the present application provides a PP cup inspection machine for contact lenses.

[0005] The present application provides a contact lens PP cup inspection machine that adopts the following technical solutions:

[0006] A contact lens PP cup inspection machine includes a conveying unit and a testing platform. The testing platform is provided with a loading station, an inspection station, and an unloading station. A transparent conveyor plate is rotatably mounted on the testing platform. The conveying unit is used to transport PP cups. The testing platform is provided with a loading unit. The loading unit is used to move the PP cups on the conveying unit one by one onto the transparent conveyor plate. The transparent conveyor plate can drive the PP cups to the loading station, the inspection station, and the unloading station.

[0007] The inspection platform is provided with a visual acquisition and inspection unit at the inspection station, and the visual acquisition and inspection unit can acquire images of the PP cups to be inspected on the transparent conveyor plate and determine whether the PP cups to be inspected are qualified. The inspection platform is provided with an NG material belt, a qualified material belt, and a unloading unit at the unloading station. The visual acquisition and inspection unit is connected to the unloading unit and is used to control the unloading unit to guide qualified PP cups into the qualified material belt, or guide unqualified PP cups into the NG material belt.

[0008] By adopting the above technical solution, when inspecting the PP cup, the conveying unit conveys the PP cup to the loading station, and then moves the PP cup to the transparent conveyor plate through the loading unit. As the transparent conveyor plate moves, when the PP cup moves to the inspection station, the visual acquisition and detection unit collects image information of the PP cup and compares it with the unsatisfactory defect image to determine whether the PP cup is qualified. Then the PP cup moves to the unloading station, and the visual acquisition and detection unit controls the unloading unit to put the qualified PP cup into the qualified material belt and the unqualified PP cup into the NG material belt. Each PP cup is inspected using the above inspection method, and the number of inspections per minute is more than 120. Therefore, compared with the manual inspection method, this solution can improve the inspection speed and efficiency of the PP cup.

[0009] In a specific possible implementation scheme, the visual acquisition and inspection unit includes an industrial camera, a processor, and a controller. The industrial camera, processor, and controller are all arranged on the detection platform. The industrial camera faces the PP cup on the transparent conveyor plate, takes pictures, and converts the acquired images into digital images and transmits them to the processor. The processor compares the digital image with the unsatisfactory defect image to determine the black spots, burrs, and warping conditions of the PP cup, and outputs a command signal to the controller. The controller outputs a control signal to the blanking unit to control the blanking unit to unload.

[0010] By adopting the above technical solution, when the PP cup moves to the inspection station, the industrial camera takes a picture of the PP cup and converts it into a digital image conveyor belt processor for processing. The processor compares the defect image of the PP cup to be inspected with the PP cup to determine whether the PP cup is qualified. The controller then controls the unloading unit to convey the PP cup to be inspected to different material belts, thereby realizing rapid inspection of the PP cup and improving inspection efficiency and quality.

[0011] In a specific implementation scheme, the number of the industrial cameras is at least seven, and the seven industrial cameras can capture images of the PP cup from six directions: top, bottom, left, right, front, and back.

[0012] By adopting the above technical solution, the black spots, warping and burrs of the PP cup are inspected by industrial cameras in seven different positions, and the PP cup is inspected in an all-round way, thereby improving the accuracy of the PP cup inspection.

[0013] In a specific possible implementation scheme, the conveying unit includes a conveyor belt mechanism and a vibration plate. The conveyor belt mechanism is used to convey the PP cup from the mold to the vibration plate. The outlet of the vibration plate is provided with a guide rail extending to the loading station. The PP cup coming out of the vibration plate can move along the guide rail to the loading station.

[0014] By adopting the above technical solution, the PP cups coming out of the mold enter the vibration plate along the conveyor belt mechanism, and then the vibration plate tidies the disordered PP cups and transports them to the loading station on the transparent conveyor plate through the guide rail, thereby improving the convenience of PP cup loading.

[0015] In a specific possible implementation scheme, the outlet of the guide rail is set on the transparent conveyor plate, so that the PP cup can slide onto the transparent conveyor plate. When the PP cup is located at the detection position, the loading unit releases the restriction on the PP cup, so that the PP cup moves with the transparent conveyor plate.

[0016] By adopting the above technical solution, when the PP cup is placed on the transparent conveyor plate via the guide rail, the loading unit restricts the PP cup from moving along with the transparent conveyor plate. When the positioning point on the transparent conveyor plate rotates to the PP cup, the control component releases the restriction on the PP cup, allowing the transparent conveyor plate to drive the PP cup to move, so that the PP cup is placed more neatly on the transparent conveyor plate.

[0017] In a specific possible implementation scheme, the loading unit includes a driving member and two baffles. The detection platform is provided with a loading rack at the loading station. The two baffles are slidably arranged on the loading rack. The driving member is arranged on the loading rack and is used to drive the two baffles to move closer to or away from each other. When the two baffles move closer to each other, they can block the movement of the PP cup. When the two baffles move away from each other, the transparent conveyor plate drives the PP cup to move.

[0018] By adopting the above technical solution, the driving member drives the two baffles closer to each other to block the PP cup, and the driving member drives the two baffles away from each other to release the blockage of the PP cup, so that the PP cup can move with the transparent conveyor plate, which facilitates the control of the PP cup.

[0019] In a specific embodiment, the two baffles are provided with blocking surfaces on opposite sides, and the PP cup sliding out of the guide rail can abut against the two blocking surfaces.

[0020] By adopting the above technical solution, when the baffle blocks the PP cups, the two PP cups abut against the blocking surface, effectively preventing the PP cups from moving around on the transparent conveyor plate, and ensuring the stability of the position and shape of the PP cups.

[0021] In a specific feasible implementation scheme, the blanking unit includes a first blanking plate and a second blanking plate, the first blanking plate and the second blanking plate are both arranged above the transparent conveying plate, and the second blanking plate is arranged in front of the first blanking plate. The first blanking plate can guide unqualified PP cups to the blanking port of the NG material belt, and the second blanking plate can guide qualified PP cups to the qualified material belt. The PP cups can slide along the first blanking plate and the second blanking plate under the drive of the transparent conveying plate. A sliding channel for the PP cups to pass through is formed between the first blanking plate and the second blanking plate. The PP cups can pass through the sliding channel and move to the first blanking plate. The second blanking plate is provided with a blocking plate, which is used to block the sliding channel and guide the PP cups to slide along the second blanking plate. The detection platform is provided with a driving motor for guiding the rotation of the blocking plate, and the driving motor is connected to the controller.

[0022] By adopting the above technical solution, when the PP cups are unloaded, the qualified PP cups slide along the sealing plate onto the second unloading plate, and finally fall from the unloading port of the qualified material belt to the qualified material belt. When the unqualified PP cups are moved to the unloading station, the driving motor drives the sealing plate to rotate, so that the sliding channel opens, and then the unqualified PP cups slide along the sliding channel to the first unloading plate, and slide along the first unloading plate to the NG material belt, thereby realizing the separate unloading of qualified and unqualified PP cups.

[0023] In a specific feasible implementation scheme, a cleaning bracket is provided on the detection platform, a support frame is provided on the cleaning bracket, a cleaning roller and a rotating roller are rotatably provided on the support frame, the cleaning roller and the rotating roller are connected by a belt, a cleaning cloth is provided on the belt, the cleaning roller guides the cleaning cloth to abut against the transparent conveying plate, and a rotating motor for driving the belt to rotate is provided on the support frame.

[0024] By adopting the above technical solution, when the industrial camera under the transparent conveyor plate takes a picture of the PP cup, black spots and impurities on the transparent conveyor plate will affect whether the processor can pass the PP cup. At this time, the rotating motor drives the belt to rotate along with the rotating roller, and the belt drives the cleaning cloth to clean the transparent conveyor plate, which can effectively avoid the impurities on the transparent conveyor plate from misjudging the processor and improve the accuracy of PP cup inspection.

[0025] In a specific possible implementation scheme, the support frame is provided with a nozzle for spraying water toward the cleaning cloth, the support frame is provided with two opposing pressure rollers, the cleaning cloth passes between the two pressure rollers, the pressure rollers are used to press out the water in the cleaning cloth, and the support frame is provided with a collection box for receiving the water pressed out by the pressure rollers.

[0026] By adopting the above technical solution, water is sprayed onto the cleaning cloth, so that the cleaning cloth can clean impurities more thoroughly; the water in the cleaning cloth is squeezed out by the pressure roller, which can reduce the residual water stains on the transparent conveyor plate, making the transparent conveyor plate cleaner.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. When inspecting PP cups, the conveying unit transports the PP cups to the loading station, then moves them onto a transparent conveyor plate. As the transparent conveyor plate moves, when the PP cups reach the inspection station, the visual acquisition and inspection unit captures image information of the PP cups and compares it with the unsatisfactory defect image to determine whether the PP cups are qualified. The PP cups then move to the unloading station, where the visual acquisition and inspection unit controls the unloading unit to place qualified PP cups onto the qualified material belt and unqualified PP cups onto the NG material belt. Each PP cup is inspected using this inspection method, with a capacity of over 120 per minute. Compared to manual inspection, this solution improves the speed and efficiency of PP cup inspection.

[0029] 2. The rotating motor drives the belt to rotate along with the rotating roller, and the belt drives the cleaning cloth to clean the transparent conveyor plate, which can effectively avoid the impurities on the transparent conveyor plate from misjudging the processor and improve the accuracy of PP cup inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the PP cup inspection machine for contact lenses according to an embodiment of the present application.

[0031] Figure 2 It is a schematic diagram used to show the structure of the control components.

[0032] Figure 3 yes Figure 2 Enlarged view of part A in the middle.

[0033] Figure 4 yes Figure 2 Enlarged view of part B in the middle.

[0034] Figure 5 It is a schematic diagram used to show the structure of a rotating motor.

[0035] Figure 6 It is along Figure 5 Cross-sectional view along the CC line.

[0036] Explanation of the accompanying symbols: 1. Conveying unit; 11. Conveyor belt mechanism; 12. Vibrating plate; 13. Guide rail; 2. Detection platform; 21. Loading station; 22. Inspection station; 23. Unloading station; 24. Transparent conveyor plate; 31. Robot; 32. Mold; 33. PP cup; 4. Loading unit; 42. Driving part; 421. Cylinder; 43. Baffle; 44. Loading rack; 45. Fixed rack; 46. Blocking surface; 5. Visual acquisition and inspection unit; 51. Industrial camera; 52. Processor; 53. Controller ; 61. NG material belt; 611. Conveyor belt mechanism; 612. Material guide hopper; 62. Qualified material belt; 63. Unloading unit; 631. First unloading plate; 632. Second unloading plate; 633. Sliding channel; 64. Sealing plate; 65. Driving motor; 71. Cleaning bracket; 72. Support frame; 73. Guide rod; 74. Telescopic spring; 751. Cleaning roller; 752. Rotating roller; 753. Belt; 76. Cleaning cloth; 77. Rotating motor; 781. Nozzle; 782. Pressing roller; 783. Collection box. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-6 This application is described in further detail.

[0038] The embodiment of the present application discloses a PP cup inspection machine for contact lenses.

[0039] Reference Figure 1 A PP cup inspection machine for contact lenses includes a conveying unit 1 and a testing platform 2. The testing platform 2 is provided with a loading station 21, an inspection station 22, and a blanking station 23. A transparent conveying plate 24 is rotatably provided on the testing platform 2. The transparent conveying plate 24 in this embodiment is a circular glass plate. One end of the conveying unit 1 is located at the blanking manipulator 31 of the mold 32. The blanking manipulator 31 clamps the PP cup 33 coming out of the mold 32 onto the conveying unit 1, and then the conveying unit 1 transports it to the loading station 21 of the transparent conveying plate 24. The testing platform 2 is provided with a loading unit 4 at the loading station 21. The loading unit 4 is used to move the PP cups 33 on the conveying unit 1 one by one to the transparent conveying plate 24. The transparent conveying plate 24 can drive the PP cups 33 to rotate, so that the PP cups 33 pass through the loading station 21, the inspection station 22, and the blanking station 23 in sequence.

[0040] Reference Figure 1The inspection platform 2 is provided with a visual acquisition inspection unit 5 at the inspection station 22. The visual acquisition inspection unit 5 can collect the image of the PP cup 33 to be inspected on the transparent conveyor plate 24, and compare it with the unsatisfactory defect image to determine whether the PP cup 33 to be inspected is qualified. The inspection platform 2 is provided with an NG material belt 61, a qualified material belt 62, and a discharge unit 63 at the unloading station 23. The visual acquisition inspection unit 5 is connected to the discharge unit 63 and is used to control the discharge unit 63 to guide the qualified PP cup 33 into the qualified material belt 62, or guide the unqualified PP cup 33 into the NG material belt 61.

[0041] When inspecting the PP cup 33, the robot 31 clamps the PP cup 33 coming out of the mold 32 onto the conveying unit 1, and then conveys it to the loading station 21 of the transparent conveying plate 24 through the conveying unit 1. Then, the PP cup 33 moves along with the transparent conveying plate 24 through the loading unit 4. The transparent conveying plate 24 drives the PP cup 33 to pass through the inspection station 22 first. When the PP cup 33 moves to the inspection station 22, the visual acquisition and inspection unit collects image information of the PP cup 33 and compares it with the unsatisfactory defect map to determine whether the PP cup 33 is qualified. Then, the PP cup 33 moves to the unloading station 23, and the visual acquisition and inspection unit 5 controls the unloading unit 63 to put the qualified PP cup 33 into the qualified material belt 62 and the unqualified PP cup 33 into the NG material belt 61. Each PP cup 33 is inspected using the above-mentioned inspection method, and the inspection quantity per minute is more than 120. Therefore, compared with the manual inspection method, this solution can improve the inspection speed and efficiency of the PP cup 33.

[0042] Reference Figure 1 The conveying unit 1 in this embodiment includes a conveyor belt mechanism 11 and a vibration plate 12. One end of the conveyor belt mechanism 11 extends to the bottom of the robot 31, and the other end extends to the top of the vibration plate 12. The conveyor belt mechanism 11 is used to convey the PP cup 33 from the mold 32 to the vibration plate 12. A guide rail 13 extending to the loading station 21 is provided at the outlet of the vibration plate 12. The PP cup 33 coming out of the vibration plate 12 can move to the loading station 21 along the guide rail 13.

[0043] Reference Figure 2 、 Figure 3The outlet of the guide rail 13 is set on the transparent conveying plate 24, so that the PP cup 33 can slide onto the transparent conveying plate 24. The loading unit 4 in this embodiment includes a driving member 42 and two baffles 43. A loading rack 44 is provided on the detection platform 2. The driving member 42 in this embodiment includes two oppositely arranged cylinders 421. The cylinder 421 is fixedly set on the loading rack 44. The two baffles 43 are both set above the transparent conveying plate 24 and opposite to the outlet of the guide rail 13. Each baffle 43 is opposite to the transparent conveying plate The spacing between 24 is smaller than the thickness of the PP cup 33, so that the baffle 43 can limit the PP cup 33 from rotating with the transparent conveying plate 24. The baffle 43 corresponds to the cylinder 421 one by one. Each baffle 43 is fixedly connected to the output shaft of the cylinder 421 through a fixing frame 45. The two cylinders 421 drive the two baffles 43 to approach or move away from each other. When the two baffles 43 approach each other, they can block the movement of the PP cup 33. When the two baffles 43 move away from each other, the transparent conveying plate 24 drives the PP cup 33 to move.

[0044] Reference Figure 2 、 Figure 3 , blocking surfaces 46 are provided on the opposite side walls of the two baffles 43, and the two blocking surfaces 46 gradually approach each other along the rotation direction of the transparent conveying plate 24. The maximum distance between the two blocking surfaces 46 is greater than the width of the PP cup 33, so that when the baffle 43 blocks the movement of the PP cup 33, the PP cup 33 can simultaneously abut against the two blocking surfaces 46.

[0045] When loading the PP cup 33, the robot 31 clamps the PP cup 33 in the mold 32 onto the conveyor belt mechanism 11, and then the conveyor belt mechanism 11 drives the PP cup 33 to be transported to the vibration plate 12. Then the vibration plate 12 tidies up the scattered PP cups 33 and then slides out along the guide rail 13, thereby improving the convenience of arranging the PP cup 33.

[0046] To improve the coordination of the entire inspection equipment, the PP cup 33 is placed at a designated position on the transparent conveyor plate 24. The PP cup 33 slides onto the transparent conveyor plate 24 along the guide rail 13 and abuts against two blocking surfaces 46, keeping the PP cup 33 stationary and effectively preventing the PP cup 33 from moving around on the transparent conveyor plate 24, ensuring the stability of the position and shape of the PP cup 33. Then, when the designated position on the transparent conveyor plate 24 rotates to the PP cup 33, the two cylinders 421 drive the two baffles 43 away from each other, allowing the transparent conveyor plate 24 to move the PP cup 33. This allows the PP cup 33 to be placed more neatly on the transparent conveyor plate 24 and its placement on the transparent conveyor plate 24 to be more accurately achieved.

[0047] Reference Figure 2The visual acquisition inspection unit 5 in this embodiment includes an industrial camera 51, a processor 52, and a controller 53. There are seven industrial cameras 51 in this embodiment. The industrial cameras 51, the processor 52, and the controller 53 are all fixedly arranged on the inspection platform 2. The seven industrial cameras 51 are arranged along the rotation direction of the transparent conveyor plate 24. Two industrial cameras 51 are arranged above the transparent conveyor plate 24 to take pictures of the PP cup 33 from top to bottom. One industrial camera 51 is arranged below the transparent conveyor plate 24 to take pictures of the bottom of the PP cup 33 from bottom to top. The other four industrial cameras 51 are arranged in the horizontal plane. The four industrial cameras 51 face the four sides of the PP cup 33 respectively and take pictures. By setting up seven industrial cameras 51, the PP cup 33 can be inspected in all directions. At the same time, the industrial cameras 51 at seven different positions inspect the black spots, warping, and burrs of the PP cup 33, and perform a comprehensive inspection of the PP cup 33, thereby improving the accuracy of the inspection of the PP cup 33.

[0048] Reference Figure 2 Each industrial camera 51 converts the captured image into a digital image and transmits it to the processor 52. The processor 52 uses AI to process the data and informs the AI ​​in advance that there are defective images of the product that do not meet the requirements. Then, the AI ​​compares the high-definition photos taken by the industrial camera 51 with the defective images, determines the black spots, burrs, and warping conditions of the PP cup 33, and outputs a command signal to the controller 53. The controller 53 outputs a control signal to the unloading unit 63 to control the unloading unit 63 to unload the material.

[0049] When the PP cup 33 moves to the inspection station 22, the industrial camera 51 takes a picture of the PP cup 33 and converts it into a digital image for processing by the conveyor belt processor 52. The processor 52 compares the PP cup 33 to be inspected with the defect image of the PP cup 33 to determine whether the PP cup 33 is qualified. Then, the controller 53 controls the unloading unit 63 to convey the PP cup 33 to be inspected to different material belts, thereby realizing rapid inspection of the PP cup 33 and improving inspection efficiency and quality.

[0050] Reference Figure 2 、 Figure 4The unloading unit 63 in this embodiment includes a first unloading plate 631 and a second unloading plate 632. The first unloading plate 631 and the second unloading plate 632 are both arranged above the transparent conveying plate 24 and located at the unloading station 23. The second unloading plate 632 is arranged in front of the first unloading plate 631. The first unloading plate 631 and the second unloading plate 632 are both inclined toward the edge along the rotation direction of the transparent conveying plate 24, so that the PP cup 33 moves along the first unloading plate 631 or the second unloading plate 632 toward the edge of the transparent conveying plate 24 under the drive of the transparent conveying plate 24. The ends of the first unloading plate 631 and the second unloading plate 632 away from the transparent conveying plate 24 form a sliding channel 633. The sliding channel 633 is located on the moving trajectory of the PP cup 33, so that the PP cup 33 can slide along the first unloading plate 631 through the sliding channel 633.

[0051] Reference Figure 2 、 Figure 4 The qualified material belt 62 and the NG material belt 61 are both arranged below the edge of the transparent conveyor plate 24. The qualified material belt 62 and the NG material belt 61 are composed of a conveyor belt mechanism 611 and a guide hopper 612. The top of the guide hopper 612 is provided with a drop opening. The guide hopper 612 of the NG material belt 61 is used to receive the PP cup 33 dropped from the first blanking plate 631. The guide hopper 612 of the qualified material belt 62 is used to receive the PP cup 33 dropped from the second blanking plate 632. The second blanking plate 632 is rotatably connected to a blocking plate 64 at one end near the sliding channel 633. The blocking plate 64 is provided at the top of the guide hopper 612. 4 is used to block the sliding channel 633 and guide the PP cup 33 to slide along the second blanking plate 632. A driving motor 65 is fixed to the second blanking plate 632. The output shaft of the driving motor 65 is coaxially fixed with the rotation axis of the blocking plate 64, so that the driving motor 65 can drive the blocking plate 64 to rotate. The driving motor 65 is connected to the controller 53, and the controller 53 controls the rotation of the driving motor 65. When an unqualified PP cup 33 rotates to the blanking station 23, the controller 53 controls the driving motor 65 to drive the blocking plate 64 to rotate, so that the sliding channel 633 is opened.

[0052] When the PP cup 33 is being unloaded, the qualified PP cup 33 slides onto the second unloading plate 632 along the sealing plate 64, and finally falls from the unloading port of the qualified material belt 62 onto the qualified material belt 62. When the unqualified PP cup 33 moves to the unloading station 23, the driving motor 65 drives the sealing plate 64 to rotate, so that the sliding channel 633 opens, and then the unqualified PP cup 33 slides along the sliding channel 633 to the first unloading plate 631, and slides along the first unloading plate 631 to the NG material belt 61, thereby realizing the separate unloading of qualified and unqualified PP cups 33 and improving the convenience of unloading the PP cup 33.

[0053] Reference Figure 5 、 Figure 6Since the station camera below the transparent conveyor plate 24 takes pictures of the PP cup 33, the cleanliness of the transparent conveyor plate 24 affects the quality of the PP cup 33. In order to reduce the impact of impurities and stains on the transparent conveyor plate 24 on the inspection of the PP cup 33, a cleaning bracket 71 is provided on the rotating platform. The cleaning bracket 71 is arranged between the unloading station 23 and the loading station 21. A support frame 72 is provided on the cleaning bracket 71, and a guide rod 73 is provided on the support frame 72. The guide rod 73 passes through the cleaning bracket 71 and is slidably connected to the cleaning bracket 71. A telescopic spring 74 is sleeved on the guide rod 73. One end of the telescopic spring 74 abuts against the cleaning bracket 71, and the other end abuts against the support frame 72. Initially, the telescopic spring 74 applies a downward thrust to the support frame 72. The support frame 72 is arranged above the transparent conveying plate 24 . The support frame 72 is rotatably connected to a cleaning roller 751 and three rotating rollers 752 . The cleaning roller 751 is arranged along the radial direction of the transparent conveying plate 24 and is located on the moving track of the PP cup 33 .

[0054] Reference Figure 5 、 Figure 6 The middle portion of the support frame 72 protrudes upward, and one end of the support frame 72 is lower than the other end. A cleaning roller 751 is arranged at the lower end of the support frame 72, two rotating rollers 752 are arranged at the upward protrusion in the middle of the support frame 72, and another rotating roller 752 is arranged at the other end of the support frame 72. The cleaning roller 751 and the rotating roller 752 are connected by a belt 753. The belt 753 passes between the two rotating rollers 752 in the middle. A cleaning cloth 76 is fixedly laid on the belt 753. A rotating motor 77 for driving the belt 753 to rotate is provided on the support frame 72. The output shaft of the rotating motor 77 is coaxially fixedly connected to one of the rotating rollers 752 in the middle. Two meshing gears are used to transmit power between the two rotating rollers 752. The telescopic spring 74 pushes the cleaning cloth 76 to abut against the transparent conveying plate 24. When the rotating motor 77 drives the cleaning cloth 76 to clean the transparent conveying plate 24, the sliding direction of the cleaning cloth 76 is opposite to the moving direction of the transparent conveying plate 24.

[0055] Reference Figure 5 、 Figure 6 The support frame 72 is provided with a nozzle 781 for spraying water toward the cleaning cloth 76. Two opposing pressure rollers 782 are rotatably connected to the support frame 72. Power is transmitted between one of the pressure rollers 782 and the rotating roller 752 in the middle position of the support frame 72 through a belt transmission mechanism. The two pressure rollers 782 are driven by gears. The cleaning cloth 76 passes between the two pressure rollers 782. The two pressure rollers 782 press the cleaning cloth 76 and press out the water in the cleaning cloth 76. A collection box 783 for receiving the water pressed out by the pressure rollers 782 is provided on the support frame 72.

[0056] When the transparent conveyor plate 24 is cleaned, when the transparent conveyor plate 24 passes the unloading station 23, the rotating motor 77 drives the belt 753 to rotate along with the rotating roller 752. Since the cleaning cloth 76 is pushed against the transparent conveyor plate 24 by the telescopic spring 74, the belt 753 drives the cleaning cloth 76 to clean the transparent conveyor plate 24, which can effectively avoid the impurities on the transparent conveyor plate 24 from misjudging the processor 52 and improve the accuracy of the PP cup 33 inspection.

[0057] When the belt 753 rotates, the nozzle 781 sprays water onto the cleaning cloth 76, so that the cleaning cloth 76 can clean the impurities more thoroughly; the water in the cleaning cloth 76 is squeezed out by the pressure roller 782, which can reduce the residual water stains on the transparent conveying plate 24, making the transparent conveying plate 24 cleaner.

[0058] The implementation principle of a PP cup inspection machine for contact lenses in an embodiment of the present application is as follows: when inspecting the PP cup 33, the robot 31 clamps the PP cup 33 coming out of the mold 32 onto the conveyor belt mechanism 11, and then the conveyor belt mechanism 11 inputs the PP cup 33 into the vibration plate 12. After being neatly arranged by the vibration plate 12, it is transported from the guide rail 13 to the unloading station 23 on the transparent conveyor plate 24, and then the cylinder 421 drives the baffle 43 to block the PP cup 33. When the placement point on the transparent conveyor plate 24 rotates to the position of the PP cup 33, the two cylinders 421 drive the baffles 43 away from each other, so that the transparent conveyor plate 24 drives the PP cup 33 to move to the inspection station 22.

[0059] When the PP cup 33 moves to the inspection station 22, it passes through seven industrial cameras 51 in turn. The seven industrial cameras 51 take pictures of various directions of the PP cup 33 and then transmit the data to the processor 52. The processor 52 uses AI to compare the pictures taken by the industrial camera 51 with the unsatisfactory defect image to determine whether the PP cup 33 is qualified. When the PP cup 33 moves to the unloading station 23, the qualified PP cup 33 is unloaded onto the qualified material belt 62 along the sealing plate 64 and the second unloading plate 632. When the unqualified PP cup 33 moves to the unloading station 23, the controller 53 controls the drive motor 65 to rotate, and the drive motor 65 drives the sealing plate 64 to rotate, so that the sliding channel 633 is opened, and then the unqualified PP cup 33 passes through the sliding channel 633 and slides along the first unloading plate 631, and is unloaded from the NG material belt 61. Each PP cup 33 is inspected using the above-mentioned inspection method, and the number of inspections per minute is more than 120. Therefore, compared with the manual inspection method, this solution can improve the inspection speed and efficiency of the PP cup 33.

[0060] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A PP cup inspection machine for contact lenses, Features: The invention comprises a conveying unit (1) and a detection platform (2), wherein the detection platform (2) is provided with a loading station (21), an inspection station (22), and a unloading station (23), wherein a transparent conveying plate (24) is rotatably provided on the detection platform (2), wherein the conveying unit (1) is used to transport PP cups (33), wherein the detection platform (2) is provided with a loading unit (4), wherein the loading unit (4) is used to move the PP cups (33) on the conveying unit (1) one by one onto the transparent conveying plate (24), and wherein the transparent conveying plate (24) can drive the PP cups (33) to move to the loading station (21), the inspection station (22), and the unloading station (23); The inspection platform (2) is provided with a visual acquisition inspection unit (5) at the inspection station (22), and the visual acquisition inspection unit (5) is capable of acquiring an image of the PP cup (33) to be inspected on the transparent conveying plate (24), and judging whether the PP cup (33) to be inspected is qualified. The inspection platform (2) is provided with an NG material belt (61), a qualified material belt (62), and a material unloading unit (63) at the material unloading station (23). The visual acquisition inspection unit (5) is connected to the material unloading unit (63), and is used to control the material unloading unit (63) to guide the qualified PP cup (33) into the qualified material belt (62), or to guide the unqualified PP cup (33) into the NG material belt (61).

2. The PP cup inspection machine for contact lenses according to claim 1, Features: The visual acquisition inspection unit (5) comprises an industrial camera (51), a processor (52), and a controller (53). The industrial camera (51), the processor (52), and the controller (53) are all arranged on the inspection platform (2). The industrial camera (51) faces the PP cup (33) on the transparent conveying plate (24), and takes a picture to acquire an image, converts the image into a digital image, and transmits the image to the processor (52). The processor (52) compares the digital image with an unsatisfactory defect image, determines the black spots, burrs, and warping conditions of the PP cup (33), and outputs a command signal to the controller (53). The controller (53) outputs a control signal to the unloading unit (63), and controls the unloading unit (63) to unload the material.

3. The PP cup inspection machine for contact lenses according to claim 2, Features: The number of the industrial cameras (51) is at least seven, and the seven industrial cameras (51) are capable of capturing images of the PP cup (33) from six directions: top, bottom, left, right, front, and back.

4. The PP cup inspection machine for contact lenses according to claim 1, Features: The conveying unit (1) comprises a conveyor belt mechanism (11) and a vibration plate (12); the conveyor belt mechanism (11) is used to convey the PP cup (33) from the mold (32) to the vibration plate (12); a guide rail (13) extending to the loading station (21) is provided at the outlet of the vibration plate (12); the PP cup (33) exiting the vibration plate (12) can move along the guide rail (13) to the loading station (21).

5. The PP cup inspection machine for contact lenses according to claim 4, Features: The outlet of the guide rail (13) is arranged on the transparent conveying plate (24), so that the PP cup (33) can slide onto the transparent conveying plate (24); when the PP cup (33) is located at the detection position, the loading unit (4) releases the restriction on the PP cup (33), so that the PP cup (33) moves along with the transparent conveying plate (24).

6. The PP cup inspection machine for contact lenses according to claim 5, Features: The loading unit (4) comprises a driving member (42) and two baffles (43); the detection platform (2) is provided with a loading rack (44) at the loading station (21); the two baffles (43) are both slidably arranged on the loading rack (44); the driving member (42) is arranged on the loading rack (44) and is used to drive the two baffles (43) to move closer to or farther from each other; when the two baffles (43) move closer to each other, the movement of the PP cup (33) can be blocked; when the two baffles (43) move away from each other, the transparent conveying plate (24) drives the PP cup (33) to move.

7. The PP cup inspection machine for contact lenses according to claim 6, Features: The two baffles (43) are provided with blocking surfaces (46) on opposite sides, and the PP cup (33) that slides out of the guide rail (13) can abut against the two blocking surfaces (46).

8. The PP cup inspection machine for contact lenses according to claim 2, Features: The unloading unit (63) includes a first unloading plate (631) and a second unloading plate (632). The first unloading plate (631) and the second unloading plate (632) are both arranged above the transparent conveying plate (24). The second unloading plate (632) is arranged in front of the first unloading plate (631). The first unloading plate (631) can guide unqualified PP cups (33) to the unloading port of the NG material belt (61). The second unloading plate (632) can guide qualified PP cups (33) to the qualified material belt (62). The PP cups (33) can be driven by the transparent conveying plate (24) along the first unloading plate (631) and the second unloading plate (632). The second blanking plate (632) slides, and a sliding channel (633) for the PP cup (33) to pass through is formed between the first blanking plate (631) and the second blanking plate (632). The PP cup (33) can pass through the sliding channel (633) and move to the first blanking plate (631). The second blanking plate (632) is provided with a blocking plate (64), and the blocking plate (64) is used to block the sliding channel (633) and guide the PP cup (33) to slide along the second blanking plate (632). The detection platform (2) is provided with a driving motor (65) for guiding the blocking plate (64) to rotate, and the driving motor (65) is connected to the controller (53).

9. The PP cup inspection machine for contact lenses according to claim 1, Features: The detection platform (2) is provided with a cleaning bracket (71), the cleaning bracket (71) is provided with a support frame (72), the support frame (72) is rotatably provided with a cleaning roller (751) and a rotating roller (752), the cleaning roller (751) and the rotating roller (752) are connected by a belt (753), a cleaning cloth (76) is provided on the belt (753), the cleaning roller (751) guides the cleaning cloth (76) to abut against the transparent conveying plate (24), and the support frame (72) is provided with a rotating motor (77) for driving the belt (753) to rotate.

10. The PP cup inspection machine for contact lenses according to claim 9, Features: The support frame (72) is provided with a nozzle (781) for spraying water toward the cleaning cloth (76), the support frame (72) is provided with two opposing pressure rollers (782), the cleaning cloth (76) passes between the two pressure rollers (782), the pressure rollers (782) are used to press out the water in the cleaning cloth (76), and the support frame (72) is provided with a collection box (783) for receiving the water pressed out by the pressure rollers (782).

Images