On-line high-speed visual inspection system for apparent defects of tablets

Abstract

The invention discloses a tablet appearance defect online high-speed visual inspection system which comprises a protection box and further comprises a feeding mechanism, a conveying assembly, a turnover device, a detection assembly, a removing device and a collecting device, the conveying assembly is located in the protection box and arranged in the middle of the protection box, the feeding mechanism is arranged at one end of the conveying assembly, and the turnover device is arranged at the other end of the conveying assembly. The turnover device is arranged at the other end of the conveying assembly, the collecting device is arranged below the turnover device, the detecting assembly is arranged between the collecting device and the turnover device, the removing device is arranged between the collecting device and the detecting assembly, and the removing device is arranged on one side of the detecting assembly. Detection is efficient and accurate, the medicine quality can be guaranteed, and the compliance risk and the labor cost of an enterprise are reduced.

Description

Technical Field

[0001] This invention relates to the field of pharmaceutical testing technology, specifically to an online high-speed visual inspection system for pharmaceutical tablet appearance defects. Background Technology

[0002] During the production process, pharmaceutical products are highly susceptible to defects such as dirt, black spots, foreign matter adhering to the surface, capsule deformation, and leakage. These defects seriously affect the quality of pharmaceutical products. When defective drugs enter the market, they not only damage the reputation and image that pharmaceutical companies have built up over a long period of time, but may also lead to market complaints and regulatory penalties. For individuals, they may also pose a certain threat to their health.

[0003] Therefore, after the final production of the drugs is completed, the finished products are inspected manually. The production team will work in 2 or 3 shifts to pick out the defective drugs and then dispose of them. This is inefficient and has high labor costs. Summary of the Invention

[0004] The present invention aims to overcome the shortcomings of the prior art, which involves manual inspection of finished products after final production, resulting in low efficiency and high labor costs.

[0005] A high-speed online visual inspection system for tablet appearance defects is proposed, including a protective box, a feeding mechanism, a conveying assembly, a flipping device, a detection assembly, a rejection device, and a collecting device. The conveying assembly is located inside the protective box and is positioned in the middle of the protective box. The feeding mechanism is located at one end of the conveying assembly, the flipping device is located at the other end of the conveying assembly, the collecting device is located below the flipping device, the detection assembly is located in the middle of the collecting device and the flipping device, and the rejection device is located in the middle of the collecting device and the detection assembly, and is located on one side of the detection assembly.

[0006] In this invention, after the tablets are manually fed into the feeding mechanism, the lifting feeding machine transports the tablets to the inside of the conveying assembly. Subsequently, the tablets are fed into the flipping device via the conveying assembly. After being positioned and angled by the flipping device, the tablets are sent into the detection assembly for photographic inspection. Defective tablets are non-contactly rejected by the airflow from the rejection mechanism. Qualified and defective tablets are respectively collected by the finished product conveyor belt and the defective product conveyor belt of the collection device and merged into corresponding collection boxes for classified collection and subsequent processing. This process is automated, highly efficient, and accurate, ensuring drug quality and reducing enterprise compliance risks and labor costs. It addresses the shortcomings of manual inspection of finished products after final production, as mentioned in the technical background, which is inefficient and costly in this method.

[0007] In a preferred embodiment of the present invention, the protective box is provided with a support frame inside, a control computer is provided on the side plate of the protective box, and a notch is provided on the end plate of the protective box located at one end of the feeding mechanism. The material box of the lifting feeding machine is located on the outside of the protective box, and the main body of the lifting feeding machine is located inside the protective box. Therefore, after the tablets are poured into the material box of the substitute feeding machine, they can be transported to the inside of the protective box by the main body of the lifting feeding machine.

[0008] In a preferred embodiment of the present invention, the feeding mechanism is a lifting feeder, and a baffle is provided at the discharge port of the feeding mechanism. The lower end of the baffle is located above the conveying component. The lifting feeder has a built-in PLC control, which can set the speed and angle according to the requirements. Therefore, the built-in PLC system of the lifting feeder can cooperate with the PLC system inside the control computer to start or stop the feeding mechanism through the control computer.

[0009] In a preferred embodiment of the present invention, the conveying assembly includes a flat conveyor belt, a diversion box, a guide plate, and a flow guide plate. The flat conveyor belt is connected to a support frame. There are two diversion boxes, both positioned above the flat conveyor belt and parallel to each other. The guide plate is located at one end of the diversion box near the flipping device and connected to the diversion box. Both diversion boxes have notches on their end plates at one end of the guide plate, and each notch in both diversion boxes has a flow guide plate. The guide plate also has multiple flow channels. When the tablets falling on the flat conveyor belt are transported to the position of the flow guide plate, their positions can be adjusted by the flow guide plate, thereby confining the tablets, which are randomly positioned after falling on the flat conveyor belt, to a preset desired position.

[0010] In a preferred embodiment of the present invention, the overturning device includes a collection box, a fixed plate, a driving roller, a driven roller, a material conveyor belt, a driving wheel, a driven wheel, and a drive motor. The collection box is located at the lower end of the guide plate. There are two fixed plates, each located at one end of the collection box. A detection component is located in the middle of the two fixed plates. There are two sets of driving rollers and driven rollers, each located in the middle of the two fixed plates, and the two sets of driving rollers and driven rollers are mirror images of each other. There are two material conveyor belts, each fitted onto one set of driving rollers and driven rollers. The driving wheel and driven wheel are located at one end of the collection box and mesh with each other. The driving wheel and driven wheel are connected to two driving rollers respectively. The drive motor is located at the other end of the collection box and is connected to one driving roller. The output shaft of the drive motor is connected to one driving roller. Therefore, when the drive motor is started, it can drive the driving roller connected to its output shaft to rotate. The rotating driving roller can then drive the other driving roller to rotate through the driving wheel and driven wheel. When the two driving rollers rotate, they will drive the material conveyor belt to circulate.

[0011] In a preferred embodiment of the present invention, the inside of the collection box is provided with a diversion plate, and the lower end of the diversion plate is provided with two sets of smoothing brushes. The two sets of smoothing brushes correspond to two material conveyor belts respectively. After the medicine falls into the inside of the collection box, it can be diverted by the diversion plate so that it falls onto the two material conveyor belts respectively, thus avoiding the medicine from being concentrated on a single material conveyor belt.

[0012] In a preferred embodiment of the present invention, each of the two material conveyor belts is provided with multiple convex rollers, and multiple sets of baffles are provided between two adjacent rubber convex rollers. The space between the adjacent baffles is a placement groove. The position of the tablets falling into the placement groove is restricted by the placement groove, thereby preventing the two tablets from overlapping when they fall into the detection component, which would cause inaccurate detection.

[0013] In a preferred embodiment of the present invention, the detection assembly includes a detection box, a light source, a connecting bracket, and a camera. The detection box is vertically positioned below the material conveyor belt. There are two sets of light sources, each positioned on one side of the detection box. Both sets of light sources are connected to a support frame via connecting brackets. Each set of connecting brackets has a corresponding camera at its tail end. A rejection device is positioned below the light sources. Notches are provided on the side plate of the detection box at positions corresponding to the two sets of light sources and the rejection device. When a tablet falls into the notch corresponding to the camera, it can be photographed by the camera. When a tablet falls into the notch corresponding to the rejection device, it can be blown out of the detection box by the rejection device.

[0014] In a preferred embodiment of the present invention, the rejection device includes a fixed box and air nozzles. The fixed box is connected to the protective box. Multiple air nozzles are provided on the side plate of the fixed box located on one side of the detection box. The positions of the air nozzles correspond to the positions of the placement slots. Therefore, when the tablet falls inside the detection box according to the position of the placement slot, it will fall at the position corresponding to the air nozzle. Then, the airflow blown out by the air nozzle can directly blow onto the tablet, thereby blowing the tablet out of the detection box.

[0015] In a preferred embodiment of the present invention, the collection device includes a connecting plate, a defective product conveyor belt, a limiting plate, a finished product conveyor belt, and a finished product box. The connecting plate is mounted on the inspection box, the defective product conveyor belt is mounted at the lower end of the connecting plate, the limiting plate is mounted on the frame of the defective product conveyor belt, and the finished product conveyor belt is mounted below the fixed box. There are two finished product boxes, which are respectively located at the outlets of the defective product conveyor belt and the finished product conveyor belt. Therefore, qualified tablets and unqualified tablets can be transported to the two finished product boxes by the defective product conveyor belt and the finished product conveyor belt respectively for subsequent processing.

[0016] The beneficial effects of this invention compared to the prior art are: This invention involves placing the tablets to be tested into the feeding mechanism and then feeding them into the flipping device via the conveying component. The flipping device adjusts the angle of the tablets, guiding them into the testing component. The testing component then photographs and uploads the images to inspect the tablets' appearance. Tablets with intact appearances fall directly onto the finished product conveyor line, while tablets with incomplete appearances are rejected by the rejection mechanism, blown out of the testing component, and then fall onto the defective product conveyor line. The collection device then collects the tested tablets in the finished product box for further processing. This entire process is automated, highly efficient, and accurate, ensuring drug quality and reducing compliance risks and labor costs for enterprises. Attached Figure Description

[0017] Figure 1 Schematic diagram of an online high-speed visual inspection system for tablet appearance defects; Figure 2 This is a schematic diagram of the internal structure of the protective box for an online high-speed visual inspection system for tablet appearance defects (the protective box is a single unit; one section has been removed to show the internal structure). Figure 3 A schematic diagram of the conveying component structure of an online high-speed visual inspection system for tablet appearance defects; Figure 4 A schematic diagram of a flat conveyor belt structure for an online high-speed visual inspection system for tablet appearance defects; Figure 5 This is a schematic diagram of the guide plate structure of an online high-speed visual inspection system for tablet appearance defects. Figure 6 A schematic diagram of the flow channel structure of an online high-speed visual inspection system for tablet appearance defects; Figure 7 A schematic diagram of the flipping device structure of an online high-speed visual inspection system for tablet appearance defects; Figure 8 This is a schematic diagram of the meshing structure of the driving and driven wheels in an online high-speed visual inspection system for tablet appearance defects. Figure 9 This is a schematic diagram of the internal structure of the collection box in an online high-speed visual inspection system for tablet appearance defects (the collection box is a single unit; one section has been removed to show the internal structure). Figure 10 This is a schematic diagram of the flow divider structure of an online high-speed visual inspection system for tablet appearance defects (the collection box is a single unit; one section is removed to show the internal structure). Figure 11 This is a schematic diagram of the smoothing brush structure in an online high-speed visual inspection system for tablet appearance defects (the collection box is a single unit; a section has been removed to show the internal structure). Figure 12 A schematic diagram of the placement slot structure for an online high-speed visual inspection system for tablet appearance defects; Figure 13 A schematic diagram of the convex roller structure of an online high-speed visual inspection system for tablet appearance defects; Figure 14 This is a schematic diagram of the detection component structure of an online high-speed visual inspection system for tablet appearance defects (the protective box is a single unit; one section has been removed to show the internal structure). Figure 15 for Figure 14 A schematic diagram of point A; Figure 16 This is a schematic diagram of the light source and camera structure of an online high-speed visual inspection system for tablet appearance defects (the protective box is a single unit; one section has been removed to show the internal structure). Figure 17 A schematic diagram of the rejection device in an online high-speed visual inspection system for tablet appearance defects; Figure 18 This is a schematic diagram of the collection device structure of an online high-speed visual inspection system for tablet appearance defects (the protective box is a single unit; one section has been removed to show the internal structure). In the diagram: 1-Protective box, 11-Support frame, 12-Control computer, 2-Feeding mechanism, 21-Baffle, 22-Feeding plate, 3-Conveying assembly, 31-Flat conveyor belt, 32-Diverter box, 33-Guide plate, 34-Guide plate, 4-Tilting device, 41-Collection box, 42-Fixing plate, 43-Driven roller, 44-Driven roller, 45-Material conveyor belt, 46-Driven wheel, 47-Driven wheel, 48-Driven wheel 5-Motor, 5-Detection component, 51-Detection box, 52-Light source, 53-Connecting bracket, 54-Camera, 6-Rejection device, 61-Fixing box, 62-Air nozzle, 7-Collection device, 71-Connecting plate, 72-Defective product conveyor belt, 73-Limiting plate, 74-Finished product conveyor belt, 75-Finished product box, 8-Diverter plate, 81-Smoothing brush, 9-Convex roller, 91-Blocking plate, 92-Placement trough, 10-Flow channel. Detailed Implementation

[0018] The following will refer to the appendices in the embodiments of the present invention. Figure 1-18 The technical solutions in the embodiments of the present invention will be described in detail below.

[0019] like Figure 1-2 As shown, an online high-speed visual inspection system for tablet appearance defects includes a protective box 1, a feeding mechanism 2, a conveying component 3, a flipping device 4, an inspection component 5, a rejection device 6, and a collection device 7. The protective box 1 is equipped with a support frame 11 inside.

[0020] like Figure 1-2As shown, the protective box 1 is connected to the support frame 11 by screws. A groove is also provided on the side plate of one side of the protective box 1. The control computer 12 is located inside the groove. When the drug is tested, it can be turned on or off by the system inside the control computer 12.

[0021] like Figure 1-2 As shown, the system inside the control computer 12 uses a programmable logic controller (PLC) as the control core. The control computer 12 is equipped with a color display human-machine interface. Through touch screen operation, process parameters can be set and modified conveniently and quickly. The protective box 1 also has a notch on the end plate at one end of the feeding mechanism 2.

[0022] like Figure 1-2 As shown, the feeding mechanism 2 used is a lifting feeding machine (the lifting feeding machine is an existing product, so it will not be described in detail). The material box of the lifting feeding machine is set on the outside of the protective box 1 through the notch on the end plate of the protective box 1. The main body of the lifting feeding machine is set inside the protective box 1 and connected to the support frame 11.

[0023] like Figure 1-2 As shown, after the tablets are poured into the hopper of the substitute feeding machine, they can be transported to the protective box 1 by the main body of the lifting feeding machine. The lifting feeding machine is controlled by a built-in PLC, which can set the speed and angle.

[0024] like Figure 1-2 As shown, the built-in PLC system of the lifting feeder can cooperate with the PLC system inside the control computer 12 to start or stop the feeding mechanism 2 through the control computer 12. The discharge port of the feeding mechanism 2 is also equipped with a baffle 21.

[0025] like Figure 1-2 As shown, one end of the baffle 21 is connected to the body of the lifting feeder by screws, and the lower end of the baffle 21 is set at the top opening of the diversion box 32 inside the conveying assembly 3. Therefore, after the tablets transported upward by the lifting feeder fall on the baffle 21, they can be guided by the baffle 21 and fall into the interior of the conveying assembly 3.

[0026] like Figure 1-2 As shown, the width of the feed plate 22 on the feeder track is slightly larger than the width of the tablet being tested. Therefore, the tablet can only be moved upward by the feed plate 22 when the width direction of the tablet is the same as the width direction of the feed plate 22.

[0027] like Figure 1-2 As shown, when the width direction of the medicine is not the same as the width direction of the feeding plate 22, the tablet will fall off the feeding plate 22, thereby controlling the amount of medicine fed by the feeding plate 22 at one time.

[0028] like Figure 3-6As shown, the conveying component 3 is located inside the protective box 1 and in the middle of the protective box 1. The conveying component 3 is connected to the support frame 11. The feeding mechanism 2 is located at one end of the conveying component 3, and the flipping device 4 is located at the other end of the conveying component 3.

[0029] like Figure 3-6 As shown, after the feeding mechanism 2 feeds the tablet into the conveying component 3, it can then feed the tablet into the flipping device 4 via the conveying component 3, thereby adjusting the photo-detection angle of the tablet being tested.

[0030] like Figure 3-6 As shown, the conveying assembly 3 includes a flat conveyor belt 31, a diversion box 32, a guide plate 33, and a flow guide plate 34. The flat conveyor belt 31 (the conveyor belt is an existing product, so it will not be described in detail) is connected to the support frame 11, and the length direction of the flat conveyor belt 31 is the same as the length direction of the protective box 1.

[0031] like Figure 3-6 As shown, there are two diversion boxes 32, both of which are located above the flat conveyor belt 31. The length direction of the two diversion boxes 32 is the same as the length direction of the flat conveyor belt 31, and the two diversion boxes 32 are parallel to each other. The guide plate 33 is located at one end of the diversion box 32 located in the flipping device 4 and is connected to the diversion box 32.

[0032] like Figure 3-6 As shown, the guide plate 33 is inclined, and the lower end of the guide plate 33 is located inside the flipping device 4. The upper end of the guide plate 33 is connected to the side plates of the two diversion boxes 32 by screws. The end plates of the two diversion boxes 32 located at one end of the guide plate 33 are provided with notches.

[0033] like Figure 3-6 As shown, the notch is located at the lower end of the end plate of the diversion box 32, so the tablets flowing into the diversion box 32 can fall onto the flat conveyor belt 31 and then be transported to the guide plate 33 via the flat conveyor belt 31. Multiple guide plates 34 are provided at the notches of the two diversion boxes 32, and the guide plates 34 are connected to the diversion box 32.

[0034] like Figure 3-6 As shown, the guide plates 34 are parallel to each other, and there is a gap between the lower end of the guide plate 34 and the flat conveyor belt 31, so that they do not directly contact the flat conveyor belt 31, thereby avoiding wear on the flat conveyor belt 31.

[0035] like Figure 3-6 As shown, when the tablets that fall on the flat conveyor belt 31 are transported to the position of the guide plate 34, the position of the tablets can be adjusted by the guide plate 34, thereby restricting the tablets that are randomly positioned after falling on the flat conveyor belt 31 to the preset required position.

[0036] like Figure 3-6 As shown, the guide plate 33 is also provided with multiple flow channels 10. The position of the flow channels 10 corresponds to the position of the guide plate 34. Therefore, after the tablet is adjusted to the required position by the guide plate 34, it can fall directly from the flat conveyor belt 31 into the flow channel 10, and then fall directly into the interior of the flipping device 4 through the flow channel 10 on the guide plate 33.

[0037] like Figure 7-9 As shown, the overturning device 4 includes a collection box 41, a fixed plate 42, a driving roller 43, a driven roller 44, a material conveyor belt 45, a driving wheel 46, a driven wheel 47, and a drive motor 48. The collection box 41 is located at the lower end of the guide plate 33 and is connected to the fixed plate 42.

[0038] like Figure 7-9 As shown, the lower end of the guide plate 33 extends into the interior of the collection box 41, so the tablets on the guide plate 33 can fall directly into the interior of the collection box 41 by their own gravity. The width direction of the collection box 41 is the same as the length direction of the protective box 1.

[0039] like Figure 7-9 As shown, there are two fixing plates 42, which are respectively set at both ends of the collection box 41. Both fixing plates 42 are set below the collection box 41. The collection box 41 is connected to the top of the two fixing plates 42, and the bottom of the two fixing plates 42 are connected to the support frame 11.

[0040] like Figure 7-9 As shown, there are two sets of driving rollers 43 and driven rollers 44, both of which are located in the middle of the two fixed plates 42. The two sets of driving rollers 43 and driven rollers 44 are mirror images of each other with the center line of the fixed plate 42 as the center. The two ends of the two sets of driving rollers 43 and driven rollers 44 are respectively rotatably connected to the two fixed plates 42.

[0041] like Figure 7-9 As shown, there are two material conveyor belts 45, which are respectively set on two sets of driving rollers 43 and driven rollers 44. The connection between the material conveyor belt 45 and the driving rollers 43 and driven rollers 44 is achieved by friction. When the driving rollers 43 and driven rollers 47 rotate, they can drive the material conveyor belt 45 to circulate.

[0042] like Figure 7-9 As shown, the material conveyor belt 45 is preferably made of rubber material, so the material conveyor belt 45 has good elastic deformation ability. The driving wheel 46 and the driven wheel 47 are set at one end of the collection box 41 and mesh with each other (the driving wheel 46 and the driven wheel 47 are gears).

[0043] like Figure 7-9As shown, the driving wheel 46 and the driven wheel 47 are disposed on the outside of a fixed plate 42, and the driving wheel 46 and the driven wheel 47 are respectively connected to two driving rollers 43 by key pins. The drive motor 48 is disposed at the other end of the collection box 41, and the drive motor 48 is disposed on the outside of another fixed plate 42.

[0044] like Figure 7-9 As shown, the drive motor 48 is connected to the side wall of the fixed plate 42. The output shaft of the drive motor 48 is connected to a drive roller 43. Therefore, when the drive motor 48 is started, it can drive the drive roller 43 connected to its output shaft to rotate.

[0045] like Figure 7-9 As shown, the rotating drive roller 43 can drive another drive roller 43 to rotate through the drive wheel 46 and the driven wheel 47. When the two drive rollers 43 rotate, they will drive the material conveyor belt 45 to circulate. Based on the characteristics of the drive wheel 46 and the driven wheel 47, the rotation direction of the two material conveyor belts 45 is the centerline direction of the collection box 41.

[0046] like Figure 10-11 As shown, the inside of the collection box 41 is provided with a diversion plate 8. The length direction of the diversion plate 8 is the same as the length direction of the collection box 41, and both ends of the diversion plate 8 are connected to the inner wall of the collection box 41. After the medicine falls into the inside of the collection box 41...

[0047] like Figure 10-11 As shown, the flow can be diverted by the diverting plate 8 so that the flow falls onto the two material conveyor belts 45 respectively, thus avoiding the medicine from being concentrated on a single material conveyor belt 45. The lower end of the diverting plate 8 is provided with two sets of smoothing brushes 81, which correspond to the two material conveyor belts 45 respectively.

[0048] like Figure 12-13 As shown, multiple convex rollers 9 are provided on both material conveyor belts 45. The length direction of the convex rollers 9 is the same as the width direction of the material conveyor belts 45. The convex rollers 9 are bonded to the upper surface of the material conveyor belts 45, and the height of the convex rollers 9 is the same as the thickness of the medicine.

[0049] like Figure 12-13 As shown, there is a gap between the lower end of the smoothing brush 81 and the convex roller 9, and multiple sets of baffle plates 91 are provided between two adjacent convex rollers 9. The baffle plates 91 are in the same direction along the length of the convex roller 9, and the height of the baffle plates 91 is the same as the height of the convex roller 9 (the convex roller 9 and the baffle plates 91 used are all made of rubber).

[0050] like Figure 12-13 As shown, the adjacent baffle plates 91 form a placement trough 92. The position of the placement trough 92 corresponds to the position of the flow channel 10 on the guide plate 33, so the tablets can fall directly into the placement trough 92 on the material conveyor belt 45.

[0051] like Figure 12-13 As shown, if two tablets fall into the same placement trough 92, the height of the two stacked tablets is higher than the convex roller 9. Then, when the material conveyor belt 45 moves to the position of the smoothing brush 81, the smoothing brush 81 can block the medicine that is higher than the height of the convex roller 9.

[0052] like Figure 12-13 As shown, after the next placement slot 92 moves to the position of the smoothing brush 81, the medicine will fall into the next placement slot 92 by its own gravity, thus leaving a large distance between the feeding plates 22.

[0053] like Figure 12-13 As shown, when the tablets are conveyed to the conveying assembly 3 via the feeding mechanism 2, the tablets will not continuously fall into the diversion box 32, so the tablets inside the diversion box 32 will not continuously fall onto the material conveyor belt 45.

[0054] like Figure 12-13 As shown, the distance between adjacent feeding plates 22 is approximately such that when the tablets on the previous feeding plate 22 fall onto the material conveyor belt 45, the tablets on the next feeding plate 22 will fall into the diversion box 32, thereby ensuring that the two adjacent placement slots 92 on the material conveyor belt 45 are simultaneously filled with tablets.

[0055] like Figure 12-13 As shown, the medicine blocked by the smoothing brush 81 can fall into the next placement trough 92. The convex rollers 9 on the two material conveyor belts 45 are arranged in a cross manner to prevent the tablets on the two material conveyor belts 45 from falling into the interior of the detection component 5 at the same time, and a distance is left between the two material conveyor belts 45.

[0056] like Figure 12-13 As shown, the remaining distance ensures that the tablet falls inside the detection component 5, while the tablet falling into the placement slot 92 is restricted in position by the placement slot 92, thereby preventing the two tablets from overlapping when falling inside the detection component 5, which would cause inaccurate detection.

[0057] like Figure 14-16 As shown, the detection component 5 includes a detection box 51, a light source 52, a connecting bracket 53, and a camera 54. The top of the detection box 51 has an opening and is vertically positioned between two fixed plates 42, and the top of the detection box 51 is "V" shaped.

[0058] like Figure 14-16As shown, the detection box 51 is located on the side wall of the inner part of the fixed plate 42 and contacts the inner wall of the two fixed plates 42 respectively. The top opening of the detection box 51 is located in the middle of the two active rollers 43, and the rotation direction of the material conveyor belt 45 is also in the middle direction of the two rotating rollers.

[0059] like Figure 14-16 As shown, when the tablets fall from the material conveyor belt 45, they can fall directly into the inside of the detection box 51 and then fall inside the detection box 51. There are two sets of light sources 52, which are respectively set below the two material conveyor belts 45.

[0060] like Figure 14-16 As shown, both sets of light sources 52 are connected to the support frame 11 via connecting brackets 53. The light sources 52 are preferably LED lights. The light sources 52 are located at the front end of the connecting brackets 53, and there is a height difference between the two sets of light sources 52.

[0061] like Figure 14-16 As shown, each of the two sets of connecting brackets 53 is equipped with a camera 54 corresponding to the light source 52 (preferably a CCD camera 54). The camera 54 is connected to the support frame 11 through the connecting bracket 53. When the camera 54 takes a picture, the light source 52 can provide supplementary light.

[0062] like Figure 14-16 As shown, the camera 54 can take pictures of both sides of the tablet when needed. The rejection device 6 is located below the light source 52. The side plate of the detection box 51 has notches at the positions corresponding to the two sets of light sources 52 and the rejection device 6.

[0063] like Figure 14-16 As shown, when the tablet falls at the notch corresponding to the position of the camera 54, it can be photographed by the camera 54. When the tablet falls at the notch corresponding to the rejection device 6, it can be blown out of the detection box 51 by the rejection device 6.

[0064] like Figure 17 As shown, the rejection device 6 includes a fixed box 61 and air nozzles 62. The fixed box 61 is connected to the protective box 1. Multiple air nozzles 62 are provided on the side plate of the fixed box 61 located on one side of the detection box 51. The positions of the air nozzles 62 correspond to the positions of the placement slots 92.

[0065] like Figure 17 As shown, when the tablet falls inside the detection box 51 according to the position of the placement slot 92, it will fall into the position corresponding to the air nozzle 62. Then the airflow blown out by the air nozzle 62 can directly blow onto the tablet, thereby blowing the tablet out of the detection box 51.

[0066] like Figure 18As shown, the collection device 7 includes a connecting plate 71, a defective product conveyor belt 72, a limiting plate 73, a finished product conveyor belt 74, and a finished product box 75. The upper end of the connecting plate 71 is connected to the detection box 51, and the lower end of the connecting plate 71 is located above the defective product conveyor belt 72.

[0067] like Figure 18 As shown, the position of the connecting plate 71 corresponds to the position of the rejection device 6. After the tablets are blown out of the detection box 51 through the air nozzle 62, they can fall directly onto the connecting plate 71, and then fall directly onto the defective product conveyor belt 72 through the connecting plate 71.

[0068] like Figure 18 As shown, the finished product conveyor belt 74 is located below the fixed box 61, and both the finished product conveyor belt 74 and the defective product conveyor belt 72 are connected to the protective box 1. The lower end of the inspection box 51 is located above the finished product conveyor belt 74.

[0069] like Figure 18 As shown, qualified tablets can fall directly onto the finished product conveyor belt 74. There are two finished product boxes 75, which are respectively set at the exit of the defective product conveyor belt 72 and the finished product conveyor belt 74. Therefore, qualified and unqualified tablets can be transported to the two finished product boxes 75 through the defective product conveyor belt 72 and the finished product conveyor belt 74 respectively for subsequent processing.

[0070] like Figure 18 As shown, the limiting plate 73 is "L" shaped and is connected to the body of the defective product conveyor belt 72 to prevent the tablets from falling off the defective product conveyor when they fall from the connecting plate 71 onto the defective product conveyor.

[0071] The movement process in this embodiment is as follows: After the tablets to be tested are poured into the feeding mechanism 2, the lifting feeding machine can input the tablets into the diversion box 32 through the feeding plate 22 after starting. Then, the flat conveyor belt 31 will input the tablets into the collection box 41.

[0072] During this process, the guide plate 34 can adjust the position of the tablet. After the tablet falls into the placement slot 92 on the material conveyor belt 45, the material conveyor belt 45 will input the tablet into the detection box 51, and the camera 54 will take pictures and upload them to detect whether the appearance of the tablet is qualified.

[0073] Tablets that pass the appearance test will fall directly onto the finished product conveyor belt 74, while tablets that fail the appearance test will be blown onto the connecting plate 71 by the airflow from the air nozzle 62 when they fall onto the air nozzle 62. The tablets that fall onto the connecting plate 71 will then fall onto the defective product conveyor belt 72, and finally be transported to two finished product boxes 75 by the defective product conveyor belt 72 and the finished product conveyor belt 74 respectively, to await further processing.

[0074] The above embodiments are merely illustrative of the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made to the technical solutions based on the technical concept proposed in this invention shall fall within the scope of protection of this invention.

Claims

1. A high-speed online visual inspection system for tablet appearance defects, comprising a protective housing (1), characterized in that: It also includes a feeding mechanism (2), a conveying component (3), a flipping device (4), a detection component (5), a rejection device (6), and a collection device (7). The conveying component (3) is located inside the protective box (1) and is positioned in the middle of the protective box (1). The feeding mechanism (2) is located at one end of the conveying component (3), the flipping device (4) is located at the other end of the conveying component (3), the collection device (7) is located below the flipping device (4), the detection component (5) is located in the middle of the collection device (7) and the flipping device (4), and the rejection device (6) is located in the middle of the collection device (7) and the detection component (5), and the rejection device (6) is located on one side of the detection component (5).

2. The online high-speed visual inspection system for tablet appearance defects according to claim 1, characterized in that: The protective box (1) is equipped with a support frame (11) inside, a control computer (12) is provided on the side plate of the protective box (1), and a notch is provided on the end plate of the protective box (1) located at one end of the feeding mechanism (2).

3. The online high-speed visual inspection system for tablet appearance defects according to claim 2, characterized in that: The feeding mechanism (2) used is a lifting feeding machine. A baffle (21) is also provided at the discharge port of the feeding mechanism (2). The lower end of the baffle (21) is located above the conveying assembly (3).

4. The online high-speed visual inspection system for tablet appearance defects according to claim 3, characterized in that: The conveying assembly (3) includes a flat conveyor belt (31), a diversion box (32), a guide plate (33), and a flow guide plate (34). The flat conveyor belt (31) is connected to the support frame. There are two diversion boxes (32), both of which are located above the flat conveyor belt (31) and are parallel to each other. The guide plate (33) is located at one end of the diversion box (32) and connected to the diversion box (32). The end plates of the two diversion boxes (32) located at one end of the guide plate (33) are provided with notches, and the notches of the two diversion boxes (32) are provided with flow guide plates (34). The guide plate (33) is also provided with multiple flow channels (10).

5. The online high-speed visual inspection system for tablet appearance defects according to claim 4, characterized in that: The overturning device (4) includes a collection box (41), a fixed plate (42), a driving roller (43), a driven roller (44), a material conveyor belt (45), a driving wheel (46), a driven wheel (47), and a drive motor (48). The collection box (41) is located at the lower end of the guide plate (33). There are two fixed plates (42) and they are respectively located at both ends of the collection box (41). The detection component (5) is located in the middle of the two fixed plates (42). There are two sets of driving rollers (43) and driven rollers (44) and they are both located at the two fixed plates (45). The fixed plate (42) is positioned in the middle, and the two sets of active rollers (43) and driven rollers (44) are set in a mirror image. There are two material conveyor belts (45) and they are respectively fitted on the two sets of active rollers (43) and driven rollers (44). The active wheel (46) and driven wheel (47) are set at one end of the collection box (41) and mesh with each other. The active wheel (46) and driven wheel (47) are respectively connected to the two active rollers (43). The drive motor (48) is set at the other end of the collection box (41) and connected to one active roller (43).

6. The online high-speed visual inspection system for tablet appearance defects according to claim 5, characterized in that: The collection box (41) is equipped with a diversion plate (8) inside, and the lower end of the diversion plate (8) is equipped with two sets of smoothing brushes (81), which correspond to the two material conveyor belts (45) respectively.

7. The online high-speed visual inspection system for tablet appearance defects according to claim 6, characterized in that: Both material conveyor belts (45) are equipped with multiple convex rollers (9), and multiple sets of baffles (91) are provided between two adjacent rubber convex rollers (9). The space between the adjacent baffles (91) is the placement groove (92).

8. The online high-speed visual inspection system for tablet appearance defects according to claim 5, characterized in that: The detection component (5) includes a detection box (51), a light source (52), a connecting bracket (53), and a camera (54). The detection box (51) is vertically positioned below the material conveyor belt (45). There are two sets of light sources (52) respectively located on both sides of the detection box (51). Both sets of light sources (52) are connected to the support frame (11) through the connecting bracket (53). The tail ends of both sets of connecting brackets (53) are equipped with corresponding cameras (54). The rejection device (6) is located below the light source (52). The side plate of the detection box (51) has notches at the corresponding positions of the two sets of light sources (52) and the rejection device (6).

9. The online high-speed visual inspection system for tablet appearance defects according to claim 8, characterized in that: The rejection device (6) includes a fixed box (61) and air nozzles (62). The fixed box (61) is connected to the protective box (1). The fixed box (61) has multiple air nozzles (62) on the side plate of the side of the detection box (51). The positions of the air nozzles (62) correspond to the positions of the placement slots.

10. The online high-speed visual inspection system for tablet appearance defects according to claim 9, characterized in that: The collection device (7) includes a connecting plate (71), a defective product conveyor belt (72), a limiting plate (73), a finished product conveyor belt (74), and a finished product box (75). The connecting plate (71) is set on the detection box (51), the defective product conveyor belt (72) is set at the lower end of the connecting plate (71), the limiting plate (73) is set on the frame of the defective product conveyor belt (72), the finished product conveyor belt is set below the fixed box (61), and there are two finished product boxes (75) which are respectively set at the outlets of the defective product conveyor belt (72) and the finished product conveyor belt (74).

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