Tablet automatic detection device and detection method

Abstract

The invention discloses an automatic tablet detection device and a detection method, and belongs to the technical field of tablet detection equipment. The automatic tablet detection device comprises a rack, a conveying mechanism, a tablet arranging mechanism, a visual detection mechanism, a removing mechanism and a turn-over mechanism, the conveying mechanism, the tablet arranging mechanism, the visual detection mechanism, the removing mechanism and the turn-over mechanism are arranged on the rack, the conveying mechanism is used for conveying tablets, and the tablet arranging mechanism is used for arranging the tablets; the visual detection mechanism is used for detecting the surface quality of the tablets, and the removing mechanism is used for removing unqualified tablets; the sheet arranging mechanism comprises an upper sheet arranging assembly located above the upper conveying assembly and a lower sheet arranging assembly located above the lower conveying assembly. The tablet sorting device is simple in structure and convenient to operate, the tablet sorting mechanism sorts the tablets through the tablet sorting channels allowing the tablets to pass through, the removing mechanism and the tablet sorting mechanism are correspondingly arranged, the purpose of independently removing abnormal single-path tablets can be achieved, defective tablets are sucked away through vacuum negative pressure, removing is convenient and fast, and the tablet detection efficiency is improved.

Description

Technical Field

[0001] The present invention relates to an automatic tablet detection device and a detection method, belonging to the technical field of tablet detection equipment. Background Art

[0002] Tablets may have defects in all links of the forming process, such as half tablets, black spots on the surface, dark particles, etc. Existing coated tablets are mostly detected by traditional manual methods. The manual detection method has problems such as cumbersome work, visual fatigue, strong detection subjectivity, and low detection efficiency, and it is difficult to meet the high requirements for quality and efficiency in tablet production. Therefore, it is extremely necessary to use intelligent equipment for detecting tablet surface defects. However, the existing intelligent detection equipment generally has problems such as single-channel intelligent tablet selection equipment, low detection efficiency, and high price of the detection equipment.

[0003] In addition, existing intelligent detection equipment mostly uses a manipulator method to grab defective tablets. This reciprocating grabbing method is complex in structure itself and has low reciprocating action grabbing efficiency. On the other hand, the tablets mostly pass through the detection equipment in a disorderly manner, and there are also problems with difficult grabbing; there are also some detection equipment that uses a mechanical pushing method. This method is applicable to single-channel detection equipment and can push defective tablets out through a push rod. However, this mechanical pushing method will have problems with difficult tablet selection when facing small disorderly tablets. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the present invention provides an automatic tablet detection device and a detection method.

[0005] The technical solution for the present invention to solve the above technical problems is as follows: An automatic tablet detection device includes a frame, a conveying mechanism, a tablet arranging mechanism, a visual detection mechanism, a rejection mechanism, and a turning mechanism arranged on the frame. The conveying mechanism is used for conveying tablets. The conveying mechanism includes an upper conveying component for conveying tablets with the front side facing up and a lower conveying component for conveying tablets with the back side facing up; the turning mechanism is used for turning over tablets.

[0006] The tablet arranging mechanism is used for arranging tablets; the tablet arranging mechanism includes an upper tablet arranging component located above the upper conveying component and a lower tablet arranging component located above the lower conveying component; both the upper tablet arranging component and the lower tablet arranging component include a tablet arranging frame and a plurality of tablet arranging channels arranged on the tablet arranging frame, and the tablet arranging frame is arranged on the frame.

[0007] The visual detection mechanism is used for detecting the surface quality of tablets. The visual detection mechanism includes a front visual detection component for detecting the front side of tablets and a back visual detection component for detecting the back side of tablets.

[0008] The rejection mechanism is used to reject unqualified tablets; the rejection mechanism includes a first rejection component for rejecting the front unqualified tablets detected by the front vision detection component and a second rejection component for rejecting the back unqualified tablets detected by the back vision detection component; both the first rejection component and the second rejection component include a rejection frame and a plurality of waste rejection pipelines arranged on the rejection frame, and the positions and numbers of the waste rejection pipelines respectively correspond to the positions and numbers of the tablet arranging channels.

[0009] The beneficial effects of the present invention are as follows: Multiple tablet arranging channels can first arrange the tablets to be visually detected. The tablets enter and pass through the multiple tablet arranging channels of the upper tablet arranging component, and then the front vision detection component can perform front detection on the tablets conveyed by the upper conveying component. After that, the tablets pass through the first rejection component, and the corresponding waste rejection pipelines of the first rejection component can reject the tablets judged to have front defects. The tablets with qualified fronts continue to be conveyed under the action of the upper conveying component. Then, the tablets are turned over by the turning mechanism, and the tablets on the lower conveying component have their backs facing up. The tablets continue to be conveyed, and after passing through the multiple tablet arranging channels of the lower tablet arranging component, the tablets are arranged to enter the corresponding tablet arranging channels. The tablets are conveyed to the back vision detection component, and the back vision detection component can detect the backs of the tablets. After that, the tablets continue to be conveyed and pass through the second rejection component, and the corresponding waste rejection pipelines of the second rejection component can reject the tablets judged to have back defects. The qualified tablets are conveyed and output on the lower conveying component. The structure of the present invention is simple and the operation is convenient. The tablet arranging mechanism arranges the tablets into multiple channels for the tablets to pass through. The rejection mechanism is correspondingly arranged with the tablet arranging mechanism, which can achieve the purpose of separately rejecting abnormal single-channel tablets. Moreover, vacuum negative pressure is used to suck away the defective tablets, and the rejection is convenient and fast, improving the detection efficiency of the tablets.

[0010] On the basis of the above technical solutions, the present invention can also be improved as follows.

[0011] Further, both the first rejection component and the second rejection component further include a suction end structure. The suction end structure includes a suction frame and a plurality of waste rejection channels arranged on the suction frame. The suction frame is arranged on the rejection frame or the machine frame. The positions and numbers of the waste rejection channels respectively correspond to the positions and numbers of the tablet arranging channels, and the inlets of the waste rejection pipelines are communicated with the waste rejection channels.

[0012] The beneficial effects of adopting the above further scheme are as follows: the tablet arranging mechanism has multiple tablet arranging channels, and the tablets enter the corresponding tablet arranging channels through the tablet arranging mechanism. The waste removing pipeline corresponds to the tablet arranging channels. Once a defective tablet is detected visually, the corresponding waste removing pipeline can suck away the defective tablets corresponding to it. In order to ensure that only the defective tablets are adsorbed without interfering with the transportation of other adjacent qualified tablets, a suction end structure is provided. A plurality of waste removing partitions on the suction rack form a plurality of waste removing channels, which correspond to the tablet arranging channels. The waste removing pipeline only needs to be connected to the corresponding waste removing channel. In this way, the tablets pass through the tablet arranging channels, and the visual inspection mechanism can independently judge the tablets passing through each tablet arranging channel. Each waste removing channel can independently remove the defective tablets without interfering with the transportation of the tablets in other adjacent waste removing channels, thus avoiding mis-sucking adjacent qualified tablets.

[0013] Further, the suction end structure further includes a plurality of connecting pipes arranged on the suction rack, and the connecting pipes are used to correspondingly connect the waste removing channels and the waste removing pipeline.

[0014] The beneficial effects of adopting the above further scheme are as follows: the connecting pipes can facilitate the connection between the waste removing channels and the waste removing pipeline. For example, it is more convenient and fast for a waste removing pipeline made of a flexible pipe to be connected to the waste removing channel through the connecting pipe.

[0015] Further, it further includes an anti-overlapping component for preventing the tablets from overlapping during single-piece transportation, and the anti-overlapping component is arranged on the inlet side of the tablet arranging channel.

[0016] The beneficial effects of adopting the above further scheme are as follows: there may be a situation where the tablets entering the upper conveying component overlap, such as two tablets stacked together, three tablets stacked together, etc. If such tablets directly enter the visual inspection mechanism, there may be a situation where the tablets cannot be detected. In order to avoid this situation, it is necessary to solve the problem of overlapping tablets before the tablets enter the visual inspection mechanism. The tablets can pass through the anti-overlapping component before entering the tablet arranging channel, and the anti-overlapping component can separate the stacked tablets, so that the tablets entering the tablet arranging channel can all be single pieces.

[0017] Further, the anti-overlapping component includes an anti-overlapping rack and an anti-overlapping curtain arranged on the anti-overlapping rack. The anti-overlapping rack is arranged on the machine frame, and the anti-overlapping curtain spans across the conveyor belt of the upper conveying component.

[0018] The beneficial effects of adopting the above further scheme are as follows: the tablets on the conveying mechanism will first pass through the anti-overlapping curtain. The lower part of the anti-overlapping curtain can act on the conveyed tablets. The anti-overlapping curtain will neither prevent the smooth passage of the tablets nor separate the stacked tablets, so that the tablets passing through the anti-overlapping curtain can be conveyed on the conveying mechanism as single pieces.

[0019] Further, the upper conveying assembly includes a first conveyor belt for conveying tablets, and the first conveyor belt is wound around a first driving wheel and a second driving wheel; the lower conveying assembly includes a second conveyor belt for conveying tablets, and the second conveyor belt is wound around a third driving wheel and a fourth driving wheel.

[0020] The beneficial effect of adopting the above further solution is that the tablets move under the action of the first conveyor belt, and it can realize the sorting of the tablets with the front side facing up, the visual inspection of the front side, the rejection of unqualified products on the front side, and the conveying of qualified tablets on the front side; after the tablets are turned over by the turning mechanism and enter the second conveyor belt, driven by the second conveyor belt, the tablets have the back side facing up, and the tablets with the back side facing up can realize the visual inspection of the back side, the rejection of unqualified products on the back side, and the conveying and output of qualified tablets.

[0021] Further, the turning mechanism includes a turning roller, and the second conveyor belt is wound around the third driving wheel, the fourth driving wheel and the turning roller. The second conveyor belt bypasses the turning roller to form a turning recess that wraps the first driving wheel. The second conveyor belt located in the turning recess is attached to the outer side of the first conveyor belt that bypasses the first driving wheel.

[0022] The beneficial effect of adopting the above further solution is that the tablets that have undergone the visual inspection and rejection process on the front side continue to move forward under the conveying of the first conveyor belt. The tablets can smoothly enter between the second conveyor belt and the first conveyor belt, and with the driving of the first conveyor belt and the second conveyor belt, they enter the second conveyor belt with the back side facing up, realizing the turning of the tablets, which is convenient for subsequent quality inspection of the back side of the tablets.

[0023] Further, it further includes a feeding mechanism. The feeding mechanism includes a hopper and a vibrating plate arranged at the discharge port of the hopper. The hopper is arranged on the frame, and the discharge end of the vibrating plate extends towards the conveying mechanism.

[0024] The beneficial effect of adopting the above further solution is that the tablets can be directly placed on the conveying mechanism. Of course, they can also be fed through the hopper. There are tablets to be detected in the hopper. The tablets are discharged through the discharge port at the bottom of the hopper and move from the discharge port to the conveyor belt of the conveying mechanism under the action of the vibrating plate, realizing the automatic feeding of the tablets and improving the detection efficiency of the tablets.

[0025] Further, the tablet sorting channel is a trumpet-shaped structure with a wider inlet side and a narrower outlet side.

[0026] The beneficial effect of adopting the above further solution is that the trumpet-shaped structure can guide the tablets about to enter the tablet sorting channel. It not only facilitates the tablets to enter the tablet sorting channel, but also can make the tablets as centered as possible through the trumpet-shaped structure, preparing for the subsequent visual inspection and accurate rejection of the tablets.

[0027] The present invention also relates to an automatic tablet detection method, which uses the above-mentioned automatic tablet detection device, and the detection steps are as follows:

[0028] 1) Place the tablets on the upper conveying assembly;

[0029] 2) The tablets are conveyed on the upper conveying assembly. After being sorted by the upper sorting assembly of the tablet sorting mechanism, the tablets enter and pass through the corresponding sorting channels;

[0030] 3) The sorted tablets are conveyed to the front vision detection assembly. The front vision detection assembly takes pictures of the fronts of the tablets on the upper conveying assembly. The tablets continue to be conveyed to the first rejection assembly. According to the detection results of the front vision detection assembly, the corresponding waste suction pipelines of the first rejection assembly can suck away the tablets with defects on the front. The tablets with qualified fronts continue to be conveyed under the action of the upper conveying assembly;

[0031] 4) The tablets with qualified fronts are turned over by the turning mechanism and enter the lower conveying assembly, and the tablets running on the lower conveying assembly have their backs facing up;

[0032] 5) Under the action of the lower conveying assembly, the tablets with qualified fronts continue to be conveyed, sorted by the lower sorting assembly, and enter and pass through the corresponding sorting channels;

[0033] 6) The sorted tablets with qualified fronts are conveyed to the back vision detection assembly. The back vision detection assembly takes pictures of the backs of the tablets with qualified fronts. The tablets with qualified fronts continue to be conveyed to the second rejection assembly. According to the detection results of the back vision detection assembly, the corresponding waste suction pipelines of the second rejection assembly can suck away the tablets with defects on the back. The qualified tablets continue to be conveyed and output under the action of the lower conveying assembly until all the tablets are detected.

[0034] The beneficial effects of the present invention are as follows: The structure is simple and the operation is convenient. The tablet sorting mechanism can sort the tablets into multiple sorting channels for the tablets to pass through. The rejection mechanism is correspondingly arranged with the sorting mechanism, which can achieve the purpose of separately rejecting the defective tablets in a single path. Moreover, vacuum negative pressure is used to suck away the defective tablets, and the rejection is convenient and fast, improving the detection efficiency of the tablets. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a schematic structural diagram of the present invention;

[0036] Figure 2 is a top view structural diagram of the upper sorting assembly and the anti-overlapping assembly of the present invention;

[0037] Figure 3 is a schematic structural diagram of the sorting channel of the present invention;

[0038] Figure 4Schematic top view of the suction end structure of the present invention above the first conveyor belt;

[0039] Figure 5 Schematic three-dimensional view of the suction end structure of the present invention above the first conveyor belt;

[0040] Figure 6 Schematic view of the conveying mechanism and the turning mechanism of the present invention;

[0041] Figure 7 Schematic view of the lower tablet arranging assembly of the present invention;

[0042] In the figure, 1, hopper; 2, vibrating plate; 3, upper tablet arranging assembly; 4, front vision detection assembly; 5, first rejection assembly; 6, upper conveying assembly; 7, vacuum conveyor; 8, defective tablet collection box; 9, turning roller; 10, lower conveying assembly; 11, lower tablet arranging assembly; 12, back vision detection assembly; 13, second rejection assembly; 14, qualified tablet collection box; 15, tablet arranging rack; 16, tablet arranging channel; 17, detection camera; 18, detection light source; 19, waste rejection pipeline; 20, waste rejection channel; 21, connecting pipe; 22, hard curtain; 23, soft curtain; 24, first conveyor belt; 25, first driving wheel; 26, second driving wheel; 27, second conveyor belt; 28, third driving wheel; 29, fourth driving wheel; 30, tablet. Detailed implementation manners

[0043] The principles and features of the present invention will be described below in conjunction with examples. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0044] As Figures 1-7 shown, an automatic tablet detection device includes a frame, a conveying mechanism, a tablet arranging mechanism, a vision detection mechanism, a rejection mechanism and a turning mechanism arranged on the frame. The conveying mechanism is used for conveying tablets 30. The conveying mechanism includes an upper conveying assembly 6 for conveying tablets 30 with the front side facing up and a lower conveying assembly 10 for conveying tablets 30 with the back side facing up. The turning mechanism is used for turning over the tablets 30.

[0045] The tablet sorting mechanism is used to sort the tablets 30; the tablet sorting mechanism includes an upper tablet sorting component 3 located above the upper conveying component 6 and a lower tablet sorting component 11 located above the lower conveying component 10; both the upper tablet sorting component 3 and the lower tablet sorting component 11 include a sorting frame 15 and a plurality of sorting channels 16 provided on the sorting frame 15, and the sorting frame 15 is provided on the machine frame; a plurality of sorting partitions on the sorting frame 15 form a plurality of sorting channels 16. The vision inspection mechanism is used to detect the surface quality of the tablets 30, and the vision inspection mechanism includes a front vision inspection component 4 for detecting the front of the tablets 30 and a back vision inspection component 12 for detecting the back of the tablets 30;

[0046] The rejection mechanism is used to reject unqualified tablets; the rejection mechanism includes a first rejection component 5 for rejecting the front unqualified tablets detected by the front vision inspection component 4 and a second rejection component 13 for rejecting the back unqualified tablets detected by the back vision inspection component 12; both the first rejection component 5 and the second rejection component 13 include a rejection frame and a plurality of waste removal pipelines 19 provided on the rejection frame, and the positions and numbers of the waste removal pipelines 19 correspond to the positions and numbers of the sorting channels 16 respectively.

[0047] Each of the waste removal pipelines 19 is provided with a vacuum conveyor 7. The vacuum conveyor 7 includes an air suction port, an air ejection port, and an air pressure supply port. The air suction port and the air ejection port are communicated on the waste removal pipeline, and the air pressure supply port is connected to a compressed air supply pipeline, and a solenoid valve is provided on the compressed air supply pipeline.

[0048] The vision inspection mechanism can take pictures of the tablets 30. If image recognition determines that the tablets passing through a certain sorting channel 16 are unqualified, that is, defective tablets, the control system will control the solenoid valve on the corresponding waste removal pipeline 19 to start, and the corresponding waste removal pipeline can suck away the defective tablets. The waste removal pipelines 19 correspond one-to-one with the sorting channels 16, and independent judgment and rejection are carried out for the tablets 30 passing through each channel.

[0049] The first rejection component 5 and the second rejection component 13 both further include a suction end structure. The suction end structure includes a suction frame and a plurality of waste rejection channels 20 provided on the suction frame. The suction frame is provided on the rejection frame or the machine frame. The number and positions of the waste rejection channels 20 respectively correspond to the number and positions of the tablet arranging channels 16. The inlet of the waste rejection pipeline 19 is communicated with the waste rejection channels 20. There are a plurality of tablet arranging channels 16 in the tablet arranging mechanism. The tablets 30 enter the corresponding tablet arranging channels 16 through the tablet arranging mechanism. The waste rejection pipeline 19 corresponds to the tablet arranging channels 16. Once a defective tablet 30 is detected visually, the corresponding waste rejection pipeline 19 can suck away the defective tablet. To ensure that only the defective tablets are adsorbed without interfering with the conveyance of other adjacent qualified tablets, a suction end structure is further provided. A plurality of waste rejection partitions on the suction frame form a plurality of waste rejection channels 20. The waste rejection channels 20 correspond to the tablet arranging channels 16. The waste rejection pipeline 19 is communicated with the corresponding waste rejection channels 20, and can suck away the defective tablets in the corresponding waste rejection channels. The defective tablets are sucked into the defective tablet collection box 8 for collection. The tablets 30 passing through the tablet arranging channels 16 can be independently judged for each channel through the detection of the visual detection mechanism, and each waste rejection channel 20 rejects independently, without interfering with the tablets 30 in other adjacent waste rejection channels 20, thus avoiding mis-sucking adjacent qualified tablets.

[0050] The suction end structure further includes a plurality of connecting pipes 21 provided on the suction frame. The connecting pipes 21 are used to correspondingly communicate the waste rejection channels 20 with the waste rejection pipeline 19. The connecting pipes 21 can facilitate the connection between the waste rejection channels 20 and the waste rejection pipeline 19. For example, it is more convenient and fast to connect the flexible waste rejection pipeline 19 with the waste rejection channels 20 through the connecting pipes 21.

[0051] It further includes an anti-overlapping component for preventing the overlapping of single tablets of the tablets 30. The anti-overlapping component is provided on the inlet side of the tablet arranging channels 16. The tablets 30 on the upper conveying component 6 may be overlapped, such as two tablets stacked or three tablets stacked, etc. If such a situation directly enters the visual detection mechanism, there may be a situation where the tablets 30 cannot be detected. To avoid this situation, it is necessary to solve the problem of overlapping tablets before the tablets 30 enter the visual detection mechanism. The anti-overlapping component is provided in front of the tablet arranging channels 16, and can separate the overlapped tablets to ensure that the tablets entering the corresponding tablet arranging channels are single tablets.

[0052] The anti-overlapping sheet component includes an anti-overlapping frame and an anti-overlapping curtain disposed on the anti-overlapping frame. The anti-overlapping frame is arranged on the machine frame, and the anti-overlapping curtain spans across the conveyor belt of the upper conveying component 6. The tablets 30 on the conveying mechanism will first pass through the anti-overlapping curtain. The anti-overlapping curtain is located above the conveyor belt of the upper conveying component and will not prevent the smooth passage of the tablets 30, nor will it affect the conveying of the conveying mechanism. At the same time, it can also act on the stacked tablets 30, enabling the tablets 30 passing through the anti-overlapping curtain to be conveyed individually on the conveying mechanism.

[0053] The anti-overlapping curtain includes a hard curtain 22 and / or a soft curtain 23. It is possible to only set the hard curtain 22, only set the soft curtain 23, or set both the soft curtain 23 and the hard curtain 22. The soft curtain 23 is arranged between the hard curtain 22 and the tablet sorting channel 16. In this way, the tablets 30 can first pass through the hard curtain 22 and then through the soft curtain 23. The hard curtain 22 and the soft curtain 23 are used to solve the problem of tablet overlapping, ensuring that the tablets 30 entering the tablet sorting channel 16 are all individual tablets to prevent overlapping.

[0054] The upper conveying component 6 includes a first conveyor belt 24 for conveying the tablets 30. The first conveyor belt 24 is wound around a first driving wheel 25 and a second driving wheel 26. The lower conveying component 10 includes a second conveyor belt 27 for conveying the tablets 30. The second conveyor belt 27 is wound around a third driving wheel 28 and a fourth driving wheel 29. The tablets 30 are moved under the action of the first conveyor belt 24, and the sorting, front visual inspection, rejection of front non-conforming products, and conveying of front qualified tablets of the tablets 30 can be realized. The tablets 30 enter the second conveyor belt 27 through the turning mechanism. Driven by the second conveyor belt 27, the tablets 30 with the back facing up can realize back visual inspection, rejection of back non-conforming products, and conveying and output of qualified tablets.

[0055] The upper conveying component 6 includes an upper power mechanism, which drives the first conveyor belt 24 by driving the first driving wheel 25 or the second driving wheel 26. The lower conveying component 10 includes a lower power mechanism, which drives the second conveyor belt 27 by driving the third driving wheel 28 or the fourth driving wheel 29. The upper power mechanism and the lower power mechanism can adopt driving motors.

[0056] The turning mechanism includes a turning roller 9. The second conveyor belt 27 is wound around the third driving wheel 28, the fourth driving wheel 29 and the turning roller 9. The second conveyor belt 27 bypasses the turning roller 9 to form a turning recess that wraps the first driving wheel 25. The second conveyor belt 27 located in the turning recess is attached to the outer side of the first conveyor belt 24 that bypasses the first driving wheel 25. The tablets 30 that have passed through the visual inspection and rejection process on the front side continue to move forward under the conveyance of the first conveyor belt 24. The tablets 30 can smoothly enter the turning area between the second conveyor belt 27 and the first conveyor belt 24, and under the driving action of the first conveyor belt 24 and the second conveyor belt 27, enter the second conveyor belt 27 with the back side facing up, realizing the turning of the tablets 30, which is convenient for subsequent inspection of the back side of the tablets 30.

[0057] It further includes a feeding mechanism. The feeding mechanism includes a hopper 1 and a vibrating plate 2 provided at the discharge port of the hopper 1. The hopper 1 is provided on the frame, and the discharge end of the vibrating plate 2 extends towards the conveying mechanism. The tablets 30 can be directly placed on the conveying mechanism. Of course, they can also be fed through the hopper 1. Just put the tablets 30 to be inspected into the hopper 1. The tablets 30 are discharged through the discharge port at the bottom of the hopper 1 and are moved from the discharge port to the conveyor belt of the conveying mechanism under the action of the vibrating plate 2, realizing the automatic feeding of the tablets 30 and improving the inspection efficiency of the tablets 30.

[0058] The tablet sorting channel 16 is a trumpet-shaped structure with a wider inlet side and a narrower outlet side. The trumpet-shaped structure can guide the tablets 30 that are about to enter the tablet sorting channel 16, facilitating the entry of the tablets 30 into the corresponding tablet sorting channel 16. Moreover, it can also make the tablets 30 as centered as possible through the trumpet-shaped structure, preparing for the subsequent visual inspection and accurate rejection of the tablets 30.

[0059] Both the front-side visual inspection component 4 and the back-side visual inspection component 12 include a detection camera 17. The detection camera 17 is arranged on the frame through a camera support. The detection camera can take pictures of the tablets and transmit the taken pictures to the control system. The control system can perform image recognition processing and analysis on the collected pictures, such as morphological processing for better segmentation of tablets, area analysis, model analysis by AI training, and recognition of various tablet defects such as half tablets, impurities, large particles, cracked tablets, and broken caps. For the judged abnormal tablets, the control system will control the corresponding waste removal pipeline to suck away the abnormal defective tablets. If no abnormality is found after analysis, the corresponding waste removal pipeline will not be opened, and the tablets will continue to be conveyed.

[0060] Both the front-side visual inspection component 4 and the back-side visual inspection component 12 further include a detection light source 18. The detection light source 18 is arranged on the camera support.

[0061] One or more detection light sources 18 can be provided. For example, two detection light sources 18 can be provided, and the included angle between the two detection light sources 18 is 120-130 degrees.

[0062] The present invention also relates to an automatic tablet detection method, which uses the automatic tablet detection device described above. The detection steps are as follows:

[0063] 1) The tablets 30 in the hopper 1 are moved onto the upper conveying assembly 6 under the action of the vibrating plate 2;

[0064] 2) The tablets are conveyed on the upper conveying assembly 6. After being sorted by the upper sorting assembly 3 of the tablet sorting mechanism, the tablets 30 enter and pass through the corresponding sorting channels 16;

[0065] 3) The sorted tablets 30 are conveyed to the front vision detection assembly 4. The front vision detection assembly 4 takes pictures of the fronts of the tablets 30 on the upper conveying assembly 6. The tablets 30 continue to be conveyed to the first rejection assembly 5. According to the detection results of the front vision detection assembly, the corresponding waste removal pipeline 19 of the first rejection assembly 5 can suck away the tablets with defects on the front. The tablets with defects on the front are sucked into the defective tablet collection box 8 under the action of the first rejection assembly 5, and the tablets with qualified fronts continue to be conveyed under the action of the upper conveying assembly 6;

[0066] 4) The tablets 30 with qualified fronts are turned over by the turning mechanism and enter the lower conveying assembly 10, and the tablets 30 running on the lower conveying assembly 10 have their backs facing up;

[0067] 5) Under the action of the lower conveying assembly 10, the tablets 30 with qualified fronts continue to be conveyed, are sorted by the lower sorting assembly 11, and enter and are sorted through the corresponding sorting channels 16;

[0068] 6) The sorted tablets 30 with qualified fronts are conveyed to the back vision detection assembly 12. The back vision detection assembly 12 takes pictures of the backs of the tablets 30 with qualified fronts. The tablets 30 with qualified fronts continue to be conveyed to the second rejection assembly 13. According to the detection results of the back vision detection assembly, the corresponding waste removal pipeline 19 of the second rejection assembly 13 can suck away the tablets with defects on the back. The tablets with defects on the back are sucked into the defective tablet collection box 8 under the action of the second rejection assembly 13, and the qualified tablets 30 continue to be conveyed and output under the action of the lower conveying assembly 10. The qualified tablets are output into the qualified tablet collection box 14 until all the tablets 30 are detected.

[0069] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tablet automatic detection device, characterized in that: The invention comprises a frame, a conveying mechanism, a tablet sorting mechanism, a visual inspection mechanism, a rejection mechanism and a flipping mechanism arranged on the frame, wherein the conveying mechanism is used to convey tablets (30), and the conveying mechanism comprises an upper conveying component (6) for conveying tablets (30) with the front side facing upward and a lower conveying component (10) for conveying tablets (30) with the back side facing upward; the flipping mechanism is used to flip the tablets (30); The tablet sorting mechanism is used for sorting the tablets (30); the tablet sorting mechanism comprises an upper tablet sorting assembly (3) located above the upper conveying assembly (6) and a lower tablet sorting assembly (11) located above the lower conveying assembly (10); the upper tablet sorting assembly (3) and the lower tablet sorting assembly (11) both comprise a tablet sorting frame (15) and a plurality of tablet sorting channels (16) arranged on the tablet sorting frame (15), and the tablet sorting frame (15) is arranged on the frame; The visual inspection mechanism is used to inspect the surface quality of the tablet (30), and the visual inspection mechanism comprises a front visual inspection component (4) for inspecting the front of the tablet (30) and a back visual inspection component (12) for inspecting the back of the tablet (30); The rejection mechanism is used to reject unqualified tablets; the rejection mechanism comprises a first rejection component (5) for rejecting unqualified tablets on the front side detected by the front visual detection component (4) and a second rejection component (13) for rejecting unqualified tablets on the back side detected by the back visual detection component (12); the first rejection component (5) and the second rejection component (13) both comprise a rejection rack and a plurality of rejection pipelines (19) arranged on the rejection rack, and the position and number of the rejection pipelines (19) respectively correspond to the position and number of the tablet sorting channel (16).

2. The automatic tablet detection device according to claim 1, characterized in that: The first rejection component (5) and the second rejection component (13) both further include a suction end structure, the suction end structure including a suction frame and a plurality of rejection channels (20) arranged on the suction frame, the suction frame being arranged on the rejection frame or the frame, the position and number of the rejection channels (20) respectively corresponding to the position and number of the sheet sorting channels (16), and the inlet of the rejection pipeline (19) being connected to the rejection channel (20).

3. The automatic tablet detection device according to claim 2, characterized in that: The suction end structure further comprises a plurality of connecting pipes (21) arranged on the suction frame, wherein the connecting pipes (21) are used to correspondingly connect the waste rejection channel (20) and the waste rejection pipeline (19).

4. The automatic tablet detection device according to any one of claims 1 to 3, characterized in that: It also includes an anti-overlapping assembly for preventing the overlapping transmission of tablets (30), and the anti-overlapping assembly is arranged on the inlet side of the tablet sorting channel (16).

5. The automatic tablet detection device according to claim 4, characterized in that: The anti-overlapping sheet assembly comprises an anti-overlapping frame and an anti-overlapping curtain arranged on the anti-overlapping frame, the anti-overlapping frame is arranged on the frame, and the anti-overlapping curtain spans over the conveyor belt of the upper conveying assembly (6).

6. The automatic tablet detection device according to any one of claims 1 to 3, characterized in that: The upper conveying assembly (6) comprises a first conveyor belt (24) for conveying tablets (30), wherein the first conveyor belt (24) is wound around a first transmission wheel (25) and a second transmission wheel (26); the lower conveying assembly (10) comprises a second conveyor belt (27) for conveying tablets (30), wherein the second conveyor belt (27) is wound around a third transmission wheel (28) and a fourth transmission wheel (29).

7. The automatic tablet detection device according to claim 6, characterized in that: The flipping mechanism comprises a flipping roller (9), the second conveyor belt (27) is wrapped around the third transmission wheel (28), the fourth transmission wheel (29) and the flipping roller (9), the second conveyor belt (27) bypasses the flipping roller (9) to form a flipping concave portion that wraps around the first transmission wheel (25), and the second conveyor belt (27) located in the flipping concave portion is attached to the outer side of the first conveyor belt (24) that bypasses the first transmission wheel (25).

8. The automatic tablet detection device according to any one of claims 1 to 3, characterized in that: It also comprises a feeding mechanism, which comprises a hopper (1) and a vibration plate (2) arranged at the discharge port of the hopper (1), the hopper (1) being arranged on the frame, and the discharge end of the vibration plate (2) extending toward the conveying mechanism.

9. The automatic tablet detection device according to any one of claims 1 to 3, characterized in that: The sheet sorting channel (16) is a trumpet-shaped structure with a wide entry side and a narrow exit side.

10. A method for automatically detecting tablets, characterized in that: Using the automatic tablet detection device as described in any one of claims 1 to 9, the detection steps are as follows: 1) placing a tablet (30) on the upper conveying assembly (6); 2) The tablets are transported on the upper conveying assembly (6), combed by the upper tablet sorting assembly (3) of the tablet management mechanism, and the tablets (30) enter and pass through the corresponding tablet sorting channel (16); 3) The sorted tablets (30) are conveyed to the front visual inspection component (4), the front visual inspection component (4) takes a photo of the front side of the tablets (30) on the upper conveying component (6), and the tablets (30) are further conveyed to the first rejection component (5). According to the detection of the front visual inspection component, the corresponding rejection pipeline (19) of the first rejection component (5) can suck away the tablets with defects on the front side, and the tablets with qualified front sides are further conveyed under the action of the upper conveying component (6); 4) The tablets (30) with qualified front sides are turned over by the turning mechanism and enter the lower conveying assembly (10), and the tablets (30) on the lower conveying assembly (10) have their back sides facing upwards; 5) Under the action of the lower conveying assembly (10), the qualified tablets (30) on the front side continue to be conveyed and combed by the lower tablet sorting assembly (11) and are sorted through the corresponding tablet sorting channel (16); 6) After sorting, the qualified tablets (30) on the front side are conveyed to the back side visual inspection component (12), which takes photos of the back side of the qualified tablets (30) on the front side. The qualified tablets (30) on the front side are further conveyed to the second rejection component (13). According to the detection of the back side visual inspection component, the corresponding rejection pipeline (19) of the second rejection component (13) can absorb the defective tablets on the back side, and the qualified tablets (30) are further conveyed and outputted under the action of the lower conveying component (10) until all the tablets (30) are inspected.

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