TWI847487B - Capsule appearance inspection machine - Google Patents

Abstract

This invention is a capsule appearance inspection machine, including a first and a second inspection device, and a feeding device. The first inspection device includes a first conveying group and a first inspection assembly. The feeding device is a centrifugal disc feeder, which can convey capsules one by one to the first conveying group. The first inspection assembly can inspect the appearance of the capsules conveyed on the first conveying group. The second inspection device includes a second conveying group and a second inspection assembly. The capsule can be transferred from the first conveying group to the second conveying group. The second inspection assembly can inspect the appearance of the capsules conveyed on the second conveying group. The first and second inspection devices are used to perform a two-stage appearance inspection. The part of the capsule that is blocked in one of the inspection devices can be inspected in the other inspection device, so that the capsule can be inspected more comprehensively without leakage.

Description

Capsule appearance inspection machine

This creation is related to a capsule appearance inspection machine, especially a capsule appearance inspection machine that can completely inspect the appearance of a capsule.

Capsules are used to seal medicines for users to swallow. Since capsules are widely used in medicines and health foods, there are corresponding specifications for the specifications and sizes of capsules to facilitate the classification and control of capsules.

In order to comply with the standards for the appearance of capsules, relevant manufacturers will use capsule appearance inspection equipment to inspect the appearance of the produced capsules. Existing capsule appearance inspection equipment usually includes a feeder, a conveyor belt, and multiple detection components arranged around the conveyor belt. The detection components can be but are not limited to cameras. The capsules are sequentially fed onto the conveyor belt through the feeder, and then the detection components are used to inspect the appearance of the capsules transported on the conveyor belt one by one. However, since the capsules are attached to the conveyor belt, a part of the capsules will be located in the blind spot of multiple detection components, which results in the existing capsule appearance inspection equipment not being rigorous enough in inspecting the appearance of the capsules, and it is easy to miss something.

In order to solve the problem that the existing capsule appearance inspection equipment has blind spots and cannot conduct a complete appearance inspection due to the capsule sticking to the conveyor belt, the purpose of this creation is to propose a capsule appearance inspection machine that can inspect the appearance of the capsule in sections and can fully inspect the appearance of the capsule.

The invention solves the technical problem of the capsule appearance inspection machine, which includes: a first inspection device, which includes a first conveying group and a plurality of first inspection components; the first conveying group includes a first end and a second end that are relatively positioned, and the first conveying group can transport a plurality of capsules from the first end of the first conveying group to the second end of the first conveying group, wherein a first part of each of the capsules is blocked by the first conveying group; the plurality of first inspection components are arranged at intervals near the first conveying group, and can inspect the appearance of the capsules on the first conveying group except the first part; a feeding device, which is a centrifugal disc feeder, which is arranged near the first conveying group. The invention relates to a first detection device, wherein the first detection device comprises a second detection device and a second detection device, wherein the second detection device is provided at a position close to the second end of the first detection device, and the plurality of capsules can be transported one by one to the first conveying group of the first detection device; and a second detection device, which comprises a second detection device and a plurality of second detection components; the second detection device is provided at a position close to the second end of the first detection device, and the capsules can be transferred from the first detection device to the second detection device and transported by the second detection device, wherein a second part of each capsule is shielded by the second detection device, and the second part of the capsule does not overlap with the first part of the capsule; the plurality of second detection components are provided at intervals close to the second detection device, and can inspect the appearance of the capsules on the second detection device except the second part.

In one embodiment, the first conveyor group of the capsule appearance inspection machine includes two conveyor belts, the two conveyor belts are spaced apart to form a gap between the two conveyor belts, the capsule is supported by the two conveyor belts when being conveyed by the first conveyor group, and the first part is located in the gap between the two conveyor belts and is blocked by the two conveyor belts.

The capsule appearance inspection machine mentioned above, wherein the first inspection device comprises an airflow generator, the airflow generator is connected to the gap between the two conveyor belts, and can generate an airflow flowing from one side of the two conveyor belts through the gap to the other side of the two conveyor belts, so that the capsule can be stabilized on the two conveyor belts by the airflow.

In another embodiment, the first conveying unit of the capsule appearance inspection machine includes a conveyor belt, and the conveyor belt includes a groove, which is concavely arranged on the surface of the conveyor belt and extends along a length direction of the conveyor belt. The capsule can be accommodated in the groove and conveyed by the conveyor belt.

The capsule appearance inspection machine, wherein the plurality of first inspection components include two end inspection components, the first inspection device includes two refraction mirrors, the two refraction mirrors are respectively located between the two end inspection components and the first conveying group, the refraction mirrors can refract light, so that the end inspection component can inspect the appearance of the end of the capsule.

The capsule appearance inspection machine, wherein the second conveying unit includes a conveying turntable, which is rotatably disposed near the second end of the first conveying unit, and the capsule can be transferred from the first conveying unit to a ring periphery of the conveying turntable, and is conveyed by the conveying turntable as the conveying turntable rotates.

The capsule appearance inspection machine, wherein the conveying turntable includes an adsorption gap, which is formed on the circumference of the conveying turntable and is annular and connected to a turntable space in the conveying turntable. The second detection device includes an airflow generator, which is connected to the turntable space and can form an airflow from the outside of the conveying turntable through the adsorption gap to the turntable space, so that the capsule can be stabilized on the circumference of the conveying turntable by the airflow.

The capsule appearance inspection machine includes a plurality of classification devices, which are located near the conveyor turntable and arranged along the circumference of the conveyor turntable. Each of the classification devices includes a nozzle and a guide assembly. A portion of the circumference of the conveyor turntable is located between the nozzle and the guide assembly. The nozzle can blow air toward the circumference of the conveyor turntable to make the capsules transported on the circumference of the conveyor turntable fall into the guide assembly.

The capsule appearance inspection machine includes a recycling hopper and a recycling collector. The recycling hopper is located near the second end of the first conveying group and is connected to the recycling collector. The capsule can be transferred from the first conveying group to the second conveying group or from the first conveying group to the recycling hopper and fall into the recycling collector.

The technical means of the invention can achieve the improved effect that: the capsule appearance inspection machine of the invention, the first part of the capsule that is blocked by the first conveying group and cannot be inspected by the first inspection device can be inspected at the second inspection device subsequently, and the second part of the capsule that is blocked by the second conveying group and cannot be inspected by the second inspection device can be inspected when it was previously at the first inspection device, Compared with the existing capsule appearance inspection equipment, which has the problem of blind spots and inability to conduct a complete appearance inspection because the capsule is attached to the conveyor belt, this invention uses the first detection device and the second detection device to conduct a two-stage appearance inspection of the capsule, which can conduct a more complete and comprehensive inspection of the capsule. The capsule that passes the inspection using this invention is less likely to leak and can meet the specifications set for the specifications and dimensions of the capsule.

10: Feeding device

20: First detection device

21: First transport group

210: Conveyor wheel set

211:Conveyor belt

211A: Conveyor belt

212: Groove

22: First detection component

22A: Lateral detection assembly

22B: Top detection assembly

22C: End detection assembly

23: Rack

24: Mounting frame

25: Airflow generator

251: Takeover

26: Refractor

30: Second detection device

31: Second transport group

311: Suction gap

32: Second detection component

33: Airflow generator

331:Connecting pipe

40: Classification device

41: Spray nozzle

42: Guidance component

51: Recycling hopper

52: Recycling Collector

61: Additional hopper

62: Collector

90: Capsules

91: Part 1

92: Part 2

S1: Inner space

S2: Turntable space

D1: First reserved distance

D2: Second reserved distance

Figure 1 is a three-dimensional diagram of the appearance of the first preferred embodiment of this creation.

Figure 2 is a partial three-dimensional view of the first preferred embodiment of this invention.

Figure 3 is a partial top view of the first preferred embodiment of this invention.

Figure 4 is a partial side cross-sectional view of the first detection device of the first preferred embodiment of the present invention.

Figure 5 is a partial cross-sectional view of the side view of the first detection device of the first preferred embodiment of the present invention.

Figure 6 is a partial cross-sectional view of another side view of the first detection device of the first preferred embodiment of the present invention.

Figure 7 is a three-dimensional diagram of another part of the first preferred embodiment of this invention.

Figure 8 is a partial cross-sectional view of the side view of the second detection device of the first preferred embodiment of the present invention.

Figure 9 is a partial enlarged view of Figure 8.

Figure 10 is a three-dimensional diagram of the appearance of the classification device of the first preferred embodiment of this creation.

Figure 11 is a schematic diagram of the detection range of the capsule in the first preferred embodiment of the present invention.

Figure 12 is a partial three-dimensional view of the first detection device of the second preferred embodiment of the present invention.

Figure 13 is a side cross-sectional view of the conveyor belt of the first detection device of the second preferred embodiment of the present invention.

In order to understand the technical features and practical effects of this invention in detail and to implement it according to the content of the invention, the preferred embodiment shown in the figure is further described in detail as follows: As shown in Figure 1, the capsule appearance inspection machine of the first preferred embodiment of this invention includes a feeding device 10, a first detection device 20 and a second detection device 30. The first detection device 20 is located between the feeding device 10 and the second detection device 30. As shown in Figure 2, the feeding device 10 can transport a plurality of capsules 90 to the first detection device 20 for the first appearance inspection. Then, as shown in Figure 7, the capsules 90 are transferred from the first detection device 20 to the second detection device 30 for the second appearance inspection.

As shown in FIG. 2 , in the first preferred embodiment of the present invention, the feeding device 10 is a centrifugal disc feeder, which can transport the plurality of capsules 90 one by one and in intervals to the first inspection device 20 for appearance inspection. In other embodiments, the feeding device 10 can also be manually operated, or other types of feeding devices, such as a vibrating feeder, can be used, which is not limited to the first preferred embodiment of the present invention. The present invention The advantage of the first preferred embodiment is that the feeding device 10 using the centrifugal disc feeder can transport the plurality of capsules 90 to the first detection device 20 in an intermittent arrangement, so as to inspect the ends of the plurality of capsules 90 and reduce the damage to the appearance of the capsules 90, which is beneficial to the subsequent appearance inspection of the first detection device 20 and the second detection device 30.

As shown in FIGS. 1 to 3, the first detection device 20 includes a first conveying group 21 and a plurality of first detection components 22. The first conveying group 21 includes a first end and a second end that are positioned opposite to each other. The first conveying group 21 can sequentially convey a plurality of capsules 90 from the first end of the first conveying group 21 to the second end of the first conveying group 21. The first end is close to the feeding device 10, and the second end is close to the second detection device 30. As shown on the right side of FIG. 11, each of the capsules 90 includes a first part 91 and a second part 92 that do not overlap each other. When the capsule 90 is conveyed by the first conveying group 21, the first part 91 is blocked by the first conveying group 21. As shown in FIG. 1, the plurality of first detection components 22 are arranged near the first conveying group 21 and can detect the first conveying group 21. 1, the appearance of the capsule 90 transported on the second conveying set 31 except the first part 91, as shown in Figures 1 and 7, the second detection device 30 includes a second conveying set 31 and a plurality of second detection components 32, the second conveying set 31 is located near the second end of the first conveying set 21, the capsule 90 can be transferred from the first conveying set 21 to the second conveying set 31, and is transported by the second conveying set 31 instead, wherein, as shown in Figure 11, when the capsule 90 is transported by the second conveying set 31, the second part 92 of the capsule 90 is blocked by the second conveying set 31, the plurality of second detection components 32 are arranged at intervals near the second conveying set 31, and can inspect the appearance of the capsule 90 transported on the second conveying set 31 except the second part 92.

In the capsule appearance inspection machine of the present invention, when the capsule 90 is inspected for appearance at the first inspection device 20, the first part 91 which cannot be inspected for appearance due to being blocked by the first conveying group 21 can be inspected at the second inspection device 30 subsequently, and when the capsule 90 is inspected for appearance at the second inspection device 30, the second part 92 which cannot be inspected for appearance due to being blocked by the second conveying group 31 can be inspected at the first inspection device 20 previously. Compared with the existing capsule appearance inspection equipment, which has a blind spot and cannot fully perform appearance inspection because the capsule is attached to the conveyor belt, the present invention performs a two-stage appearance inspection on the capsule 90 through the first inspection device 20 and the second inspection device 30, and can perform a more complete and comprehensive inspection on the capsule 90. The capsule 90 that passes the inspection of the present invention is less likely to leak and can meet the specifications set for the specifications and dimensions of the capsule.

As shown in FIG. 2 and FIG. 4, in the first preferred embodiment of the present invention, the first conveyor assembly 21 includes two conveyor belts 211. Specifically, as shown in FIG. 1, FIG. 3 and FIG. 4, the first detection device 20 further includes a frame 23 and a mounting frame 24. The two conveyor belts 211 are arranged on a plurality of conveyor belt wheels of a conveyor wheel assembly 210 mounted on the frame 23, so that the two conveyor belts 211 can rotate cyclically to transport the capsule 90. As shown in FIG. 1, the mounting frame 24 is arranged on the frame 23 to mount the plurality of first detection assemblies 22. As shown in FIG. 4, the two conveyor belts 211 are arranged spaced apart and parallel to each other, and a gap is formed between the two conveyor belts 211. The capsule 90 is supported by the two conveyor belts 211 when being transported by the first conveyor assembly 21, and the first part 91 is located in the gap between the two conveyor belts 211 and is blocked by the two conveyor belts 211. In other embodiments, a single conveyor belt 211 can actually be used for transport. The advantage of the first preferred embodiment of the present invention is that during transport, the capsule 90 is stuck in the gap between the two conveyor belts 211 and is less likely to roll or shake at will. When the appearance is subsequently inspected, the plurality of capsules 90 can be inspected by the plurality of first inspection assemblies 22 at the same angle, which is more beneficial for the appearance inspection and the collection and comparison of the subsequent inspection data.

Furthermore, as shown in FIG. 4 , in the first preferred embodiment of the present invention, a closed internal space S1 is formed in the frame 23, and the internal space S1 is connected to the gap between the two conveyor belts 211. As shown in FIG. 1 , the first detection device 20 further includes an airflow generator 25, and the airflow generator 25 is connected to the frame 23 through two connecting pipes 251, so that the airflow generator 25 is connected to the gap between the two conveyor belts 211 through the internal space S1 in the frame 23. The airflow generator 25 can draw air to form an air pressure difference between the upper and lower sides of the two conveyor belts 211, that is, to generate a pressure difference from the upper side of FIG. 4 to the lower side of FIG. 4 , that is, from the two conveyor belts 211. 11 flows from the upper side of the two conveyor belts 211 through the gap between the two conveyor belts 211 to the lower side of the two conveyor belts 211, so that the capsule 90 is stabilized on the two conveyor belts 211 by the above-mentioned airflow, forming an adsorption effect, thereby reducing the probability of the capsule 90 producing a slight deviation, making it easier to aggregate and compare the data obtained by the plurality of first detection components 22 when inspecting the capsule 90; specifically, the airflow generator 25 is a blower, which can form the above-mentioned pressure difference and generate the above-mentioned airflow by extracting the gas in the internal space S1. In other embodiments, other machines with air extraction function can also be used instead of being limited to the above-mentioned blower.

As shown in FIG. 1 and FIG. 3 , in the first preferred embodiment of the present invention, the plurality of first detection components 22 specifically include two side detection components 22A, a top detection component 22B and two end detection components 22C. Specifically, the mounting frame 24 for mounting the plurality of first detection components 22 is assembled from a plurality of aluminum extrusions. The two side detection components 22A, the top detection component 22B and the two end detection components 22C are all mounted and fixed on the mounting frame 24 and are located near the two conveyor belts 211 of the first conveyor group 21. The two side detection components 22A, the top detection component 22B and the two end detection components 22C are all charge-coupled devices. Device,CCD) camera.

As shown in FIG. 3 and FIG. 5 , the two side detection components 22A and the top detection component 22B perform an appearance inspection of the capsule 90 at approximately the same location of the first conveyor group 21. As shown in FIG. 5 , the two side detection components 22A are disposed opposite to each other and can perform an appearance inspection of the capsule 90 from the left and right sides of FIG. 5 , respectively. The top detection component 22B is disposed above the gap between the two conveyor belts 211 and can inspect the top of the capsule 90 from top to bottom. As shown in FIG. 3 , the two end detection components 22A and 22B are disposed above the gap between the two conveyor belts 211 and can inspect the top of the capsule 90 from top to bottom. The detection assembly 22C and the top detection assembly 22B are arranged in the same direction and spaced apart. As shown in FIG6 , the first detection device 20 further includes two refraction mirrors 26. Each of the refraction mirrors 26 is arranged between a corresponding one of the end detection assemblies 22C and the first conveying assembly 21, and each of the refraction mirrors 26 is arranged obliquely relative to the two conveyor belts 211. The refraction mirrors 26 can refract the light emitted from the left end or the right end of the capsule 90 to the corresponding end detection assembly 22C.

In the first preferred embodiment of the present invention, after the capsule 90 is inspected for appearance by the two side inspection components 22A and the top inspection component 22B, the end inspection component 22C can be used in conjunction with the refractor 26 to refract the light emitted from the arc-shaped end of the capsule 90 to the end inspection component 22C, so that the end inspection component 22C can inspect the appearance of the end of the capsule 90; thereby, through the above-mentioned plurality of first inspection components 22, the capsule appearance inspection function of the present invention can increase the coverage, data volume and data accuracy of the appearance inspection of the capsule 90, so that the results obtained by the subsequent collection and comparison of the inspection data can be more accurate.

As shown in FIG. 7 , in the first preferred embodiment of the present invention, the second conveyor assembly 31 of the second detection device 30 is a conveyor turntable, which is rotatably disposed near the second end of the first conveyor assembly 21 , and the turntable surface of the conveyor turntable is inclined relative to the upper surface of the two conveyor belts 211, specifically, inclined at about 30°, and the capsule 90 can be transferred from the first conveyor assembly 21 to a circumference of the conveyor turntable, and the capsule 90 can be affected by the rotation of the conveyor turntable. In fact, in other embodiments, as long as the capsule 90 can be transferred from the first conveying set 21 to the second conveying set 31 and conveyed by the second conveying set 31, the actual form of the second conveying set 31 is not limited by the first preferred embodiment of the present invention. The advantage of the first preferred embodiment of the present invention is that the second conveying set 31 in the form of the conveying turntable occupies less space than the long conveyor belt, which can reduce the overall volume of the capsule appearance inspection machine.

More specifically, as shown in FIG8 and FIG9, in the first preferred embodiment of the present invention, the conveying turntable includes a suction gap 311, and the suction gap 311 is formed at the circumference of the conveying turntable and is annular. A turntable space S2 is formed inside the conveying turntable, and the suction gap 311 is connected to the turntable space S2. The second detection device 30 also includes an airflow former 33, and the airflow former 33 is connected to the conveying turntable through a connecting tube 331, so that the airflow former 33 is connected to the turntable space S2 and connected to the suction gap 311, and the suction gap 311 can be evacuated. The pressure difference between the outside of the conveying turntable and the turntable space S2 inside the conveying turntable is generated, that is, an airflow is formed from the outside of the conveying turntable through the adsorption gap 311 to the turntable space S2, so that the capsule 90 is stabilized on the circumference of the conveying turntable through the above-mentioned airflow to form an adsorption effect. Specifically, the airflow generator 33 is a blower, which can generate the above-mentioned pressure difference and form the above-mentioned airflow by extracting the gas in the turntable space S2. In other embodiments, other machines with air extraction function can also be used and are not limited to the above-mentioned blower.

In the first preferred embodiment of the present invention, the transfer of the capsule 90 is performed by the difference in airflow strength formed by the airflow generator 25 and the airflow forming device 33. Specifically, as shown in FIG. 7 , since the airflow strength formed by the airflow forming device 33 is stronger than the airflow strength formed by the airflow generator 25, when the capsule 90 is about to be transported by the first conveying unit 21 to the second end of the first conveying unit 21, The capsule 90 is stabilized on the two conveyor belts 211 with a weak airflow, and the capsule 90 gradually approaches the suction gap 311 of the conveyor turntable. Since the airflow generator 33 forms a strong airflow, the capsule 90 will be sucked on the circumference of the conveyor turntable. At this time, as shown in the middle figure of Figure 11, the first part 91 of the capsule 90 is still blocked by the two conveyor belts 211, and the The second portion 92 of the capsule 90 is located in the adsorption gap 311 due to the capsule 90 being adsorbed and is shielded by the conveyor turntable. When the conveyor turntable rotates, the capsule 90 is separated from the two conveyor belts 211 and transferred to the circumference of the conveyor turntable and is transported by the conveyor turntable. In this way, the capsule 90 can be transferred from the first conveyor group 21 to the second conveyor group 31 and can be transported by the other conveyor groups 21 and 31. In the embodiment, a plurality of small clamping claws or clamping devices can be arranged along the circumference of the conveying turntable to clamp the capsule 90 one by one from the first conveying group 21. The advantage of the first preferred embodiment of the present invention is that the appearance of the capsule 90 is less likely to be damaged when the appearance of the capsule 90 is inspected by air pressure adsorption, and the installation and maintenance costs of the clamping claws or clamping devices are not required.

In addition, in the first preferred embodiment of the present invention, as shown in FIG. 1 and FIG. 7, regarding the arrangement of the plurality of second detection components 32, the plurality of second detection components 32 can be arranged along the radial direction, tangential direction, etc. of the conveying turntable, so as to inspect the appearance of the capsule 90 from the rear end, front end or side thereof, respectively. The plurality of second detection components 32 can be installed by arranging an installation bracket near the conveying turntable. The detailed structure and method of installing the plurality of second detection components 32 are not shown in the drawings and are described one by one here.

In addition, as shown in FIGS. 8 to 10, in the first preferred embodiment of the present invention, the capsule appearance inspection machine further includes a plurality of classification devices 40, which are located near the conveyor turntable and are arranged along the circumference of the conveyor turntable. Each of the classification devices 40 includes a nozzle 41 and a guide assembly 42. The nozzle 41 is connected to an air source, and the guide assembly 42 specifically includes a hopper and a conduit. A portion of the circumference of the conveyor turntable is located between the nozzle 41 and the guide assembly 42, and the nozzle 41 can blow air toward the circumference of the conveyor turntable to make the circumference of the conveyor turntable The transported capsules 90 fall into the guide assembly 42, and the multiple classification devices 40 can classify the multiple capsules 90 with different inspection results. For example, the multiple classification devices 40 can correspond to the various categories such as qualified inspection, defects in different parts, and inability to identify and need to be re-inspected, so as to output the capsules 90 that have passed the inspection for subsequent processing, remove the capsules 90 that have defects, and re-inspect the capsules 90 that need to be re-inspected into the feeding device 10, and then pass the inspection of the first inspection device 20 and the second inspection device 30.

As shown in FIG. 11 , in the first preferred embodiment of the present invention, when the first detection device 20 or the second detection device 30 is used for inspection, an undetected portion of the capsule 90 is reserved to avoid the inability to obtain accurate appearance data of the undetected portion due to insufficient light or other factors. As shown in the left side illustration of FIG. 11 , when the first detection device 20 is used for appearance inspection, the upper surface of the two conveyor belts 211 is vertically upward. The portion of the capsule 90 within the range of the first reserved distance D1 is used as the undetected portion when the first detection device 20 is used. In this way, the undetected portion and the first portion 91 are blind spots for the first detection device 20 to detect the appearance. The range in which the capsule 90 can be detected by the first detection device 20 is indicated by the hatching from the upper right to the lower left of FIG. 11, as shown in the middle figure of FIG. 11. When the inspection device 30 performs an appearance inspection, the portion of the capsule 90 within a second reserved distance D2 from the second conveying group 31, that is, from the circumference of the conveying turntable to the outside is used as the uninspected portion when the second inspection device 30 is in use. In this way, the uninspected portion and the second portion 92 are blind spots for the second inspection device 30 to inspect the appearance. The capsule 90 can be inspected within the inspection range of the second inspection device 30. The area around the capsule 90 is filled with a cross-hatching line from the upper left to the lower right of FIG. 11 , wherein the first reserved distance D1 and the second reserved distance D2 are set to approximately 1 mm. As shown in the right side illustration of FIG. 11 , after being inspected by the first inspection device 20 and the second inspection device 30 , the range of the inspected appearance of the capsule 90 already includes the complete capsule 90 , and no missing parts of the appearance that have not been inspected are left.

As shown in FIG. 7 , in a preferred embodiment of the present invention, the capsule appearance inspection machine further includes a recovery hopper 51 and a recovery collector 52. The recovery hopper 51 is located near the second end of the first conveying assembly 21 and is connected to the recovery collector 52. When the capsule 90 is conveyed to the second end near the first conveying assembly 21, if the inspection result of the capsule 90 is confirmed to be unqualified according to the inspection result of the plurality of first inspection assemblies 22, the capsule 90 will not be transferred to the periphery of the conveying turntable, but will be transferred to the periphery of the conveying turntable. Before being transferred to the conveyor turntable, the capsule 90 enters the recovery hopper 51 from the first conveyor group 21 and falls into the recovery collector 52 and is judged as an NG product, that is, a defective product with problems in appearance. Specifically, the capsule appearance inspection machine can be provided with an air blowing nozzle near the recovery hopper 51, and the air blowing nozzle is used to blow air through the air blowing nozzle so that the capsule 90 is blown away from the first conveyor group 21 and falls into the recovery hopper 51 before being transferred to the conveyor turntable, and is judged as an NG product.

As shown in FIG. 7 , in a preferred embodiment of the present invention, the capsule appearance inspection machine further includes an additional hopper 61 and a collector 62. The additional hopper 61 is disposed beside the second end of the first conveying group 21 and is connected to the collector 62. When the capsule appearance inspection machine needs to be cleaned, and the first detection device 20 and the second detection device 30 are shut down, since the first conveying group 21 still has the capsule 90 remaining, the first conveying group 21 can be cleaned by the additional hopper 61 and the collector 62. First, the capsule 90 remaining on the first conveying unit 21 is collected into the collector 62 to clean the capsule appearance inspection machine. Alternatively, when the second detection device 30 fails or there are other emergencies, resulting in the failure of the adsorption effect on the conveying turntable of the second detection device 30, the additional hopper 61 and the collector 62 can serve as a safeguard to prevent the capsule 90 from being unable to be transferred to the conveying turntable and continuing to be transported by the first conveying unit 21 and falling elsewhere.

As shown in FIG. 12 and FIG. 13, the second preferred embodiment of the capsule appearance inspection machine of the present invention is substantially the same as the first preferred embodiment, except that in the second preferred embodiment of the present invention, the first conveying group 21 includes a single conveying belt 211A. As shown in FIG. 13, the conveying belt 211A includes a groove 212, and the groove 212 is recessed on the upper surface of the conveying belt 211A. And extending along a length direction of the conveyor belt 211A, the capsule 90 can be accommodated in the groove 212 and transported by the conveyor belt 211A; compared with the first preferred embodiment of the present invention, which uses the two conveyor belts 211 and the airflow generator 25 to generate airflow to stabilize the capsule 90, the second preferred embodiment of the present invention provides another method for stably transporting the capsule 90.

The above is only the best implementation example of this creation, and does not limit this creation in any form. Any person with common knowledge in the relevant technical field, within the scope of the technical solution proposed by this creation, can make partial changes or modifications to the technical content disclosed by this creation, and the equivalent implementation example that does not deviate from the technical solution content of this creation still falls within the scope of the technical solution of this creation.

10: Feeding device

20: First detection device

21: First transport group

22: First detection component

23: Rack

24: Mounting frame

25: Airflow generator

251: Takeover

30: Second detection device

31: Second transport group

32: Second detection component

33: Airflow generator

Claims (9)

A capsule appearance inspection machine comprises: a first inspection device, comprising a first conveying group and a plurality of first inspection components; the first conveying group comprises a first end and a second end which are located opposite to each other, the first conveying group can transport a plurality of capsules from the first end of the first conveying group to the second end of the first conveying group, wherein a first part of each of the capsules is shielded by the first conveying group; the plurality of first inspection components are arranged at intervals near the first conveying group, and can inspect the appearance of the capsules on the first conveying group except the first part; a feeding device, which is a centrifugal disc feeder, which is arranged near the first end of the first conveying group, and can transport the plurality of capsules one by one to the first conveying group of the first detection device; and a second detection device, which includes a second conveying group and a plurality of second detection components; the second conveying group is located near the second end of the first conveying group, and the capsules can be transferred from the first conveying group to the second conveying group and transported by the second conveying group instead, wherein a second part of each capsule is shielded by the second conveying group, and the second part of the capsule does not overlap with the first part of the capsule; the plurality of second detection components are spaced and located near the second conveying group, and can inspect the appearance of the capsules on the second conveying group except the second part. As described in claim 1, the capsule appearance inspection machine, wherein the first conveyor group includes two conveyor belts, the two conveyor belts are spaced apart to form a gap between the two conveyor belts, the capsule is supported by the two conveyor belts when being conveyed by the first conveyor group, and the first part is located in the gap between the two conveyor belts and is blocked by the two conveyor belts. The capsule appearance inspection machine as described in claim 2, wherein the first inspection device comprises an airflow generator, the airflow generator is connected to the gap between the two conveyor belts, and can generate an airflow flowing from one side of the two conveyor belts through the gap to the other side of the two conveyor belts, so that the capsule can be stabilized on the two conveyor belts by the airflow. As described in claim 1, the capsule appearance inspection machine, wherein the first conveying unit includes a conveyor belt, the conveyor belt includes a groove, the groove is concavely arranged on the surface of the conveyor belt and extends along a length direction of the conveyor belt, and the capsule can be accommodated in the groove and conveyed by the conveyor belt. A capsule appearance inspection machine as described in any one of claims 1 to 4, wherein the plurality of first inspection components include two end inspection components, the first inspection device includes two refraction mirrors, the two refraction mirrors are respectively located between the two end inspection components and the first conveying group, the refraction mirrors can refract the light emitted from the end of the capsule to the corresponding end inspection component, so that the end inspection component can inspect the appearance of the end of the capsule. The capsule appearance inspection machine as described in claim 1, wherein the second conveying unit includes a conveying turntable, which is rotatably disposed near the second end of the first conveying unit, and the capsule can be transferred from the first conveying unit to a circumference of the conveying turntable, and is conveyed by the conveying turntable as the conveying turntable rotates. As described in claim 6, the capsule appearance inspection machine, wherein the conveying turntable includes a suction slit, which is formed on the circumference of the conveying turntable and is annular, and is connected to a turntable space in the conveying turntable, and the second detection device includes an airflow generator, which is connected to the turntable space and can form an airflow from the outside of the conveying turntable through the suction slit to the turntable space, so that the capsule can be stabilized on the circumference of the conveying turntable by the airflow. The capsule appearance inspection machine as described in claim 7 comprises a plurality of classification devices, which are arranged near the conveying turntable and along the circumference of the conveying turntable. Each of the classification devices comprises a nozzle and a guide assembly. A portion of the circumference of the conveying turntable is located between the nozzle and the guide assembly. The nozzle can blow air toward the circumference of the conveying turntable to make the capsules transported on the circumference of the conveying turntable fall into the guide assembly. The capsule appearance inspection machine as described in any one of claims 1 to 4 and 6 to 8 comprises a recovery hopper and a recovery collector, the recovery hopper is located near the second end of the first conveying group and is connected to the recovery collector, the capsule can be transferred from the first conveying group to the second conveying group or from the first conveying group into the recovery hopper and fall into the recovery collector.