Capsule appearance defect detection device

Abstract

The invention discloses a capsule appearance defect detection device, and relates to the technical field of image acquisition. The capsule appearance detection assembly is used for carrying out appearance detection on the capsules in the detection range of the capsule appearance detection assembly; the capsule holding assembly is arranged below the capsule discharging device, a plurality of capsule holding structures facing the capsule discharging device are arranged on the capsule holding assembly, and the capsule holding structures are used for receiving capsules from the capsule discharging device. According to the capsule appearance detection device, in the rotating process of the rotating ring, the rotating ring keeps the capsule to pass through the capsule overturning assembly, the capsule on the rotating ring is overturned through the capsule overturning assembly, so that the capsule appearance detection assembly on the rear side can further detect the appearance of the capsule, and all-round appearance detection of the capsule is achieved by repeating the steps; and the accuracy of capsule appearance detection is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of image acquisition, and particularly to a capsule appearance defect detection device. Background Art

[0002] During the capsule production process, various defects are likely to occur due to the constraints of the production process, such as a series of problems like capsule deformation, cutting, splitting, and bad adhesion, which seriously affect the quality of the capsules, resulting in the capsules losing their container function or having too low a drug dosage. Therefore, capsule appearance detection has become one of the crucial production processes in the capsule manufacturing process.

[0003] In the prior art, the camera in the computer vision recognition part is installed above the conveyor chain of the capsule arrangement and conveying part. The camera takes pictures and compares them with the images of normal capsules to identify defective capsules, thus achieving the purpose of capsule appearance detection. However, when the camera takes pictures of the capsule appearance, there is a certain area of detection blind spots, especially the sides of the capsule, the area below half of the end face, and the back cannot be detected, resulting in the inability to guarantee the accuracy rate of capsule appearance defect detection. Summary of the Invention

[0004] The technical solution of the present invention aims at the technical problem that the prior art solution is too single, and provides a solution significantly different from the prior art. Specifically, the purpose of the present invention is to provide a capsule appearance defect detection device to solve the problem that there are detection blind spots during the existing capsule appearance defect detection and the circumferential direction of the capsule cannot be completely detected as mentioned in the above background art.

[0005] To achieve the above object, the present invention provides the following technical solution: A capsule appearance defect detection device, comprising: A capsule feeding device; A capsule appearance detection component, which is used to detect the appearance of the capsules within its detection range; A capsule holding component, which is arranged below the capsule feeding device, and the capsule holding component has a plurality of capsule holding structures facing the capsule feeding device, and the capsule holding structures are used to pick up capsules from the capsule feeding device; At least one capsule flipping component, which is arranged below the capsule holding component, and the capsule flipping component is used to drive the capsules in the capsule holding structures to flip; A driving component, which is connected to the capsule holding component, and the driving component is used to drive the capsule holding component to move, so that the capsule holding structures on the capsule holding component sequentially pass through the capsule feeding device, the capsule flipping component, and the capsule appearance detection component.

[0006] Preferably, the capsule holding assembly includes a rotating ring, and the capsule feeding device, the capsule flipping assembly and the capsule appearance inspection assembly are sequentially arranged along the circumferential direction of the rotating ring.

[0007] Preferably, the capsule holding structure includes a capsule placement groove formed on the upper end surface of the rotating ring. The capsule placement groove communicates with the circumferential wall of the rotating ring, and the length of the capsule placement groove is arranged along the radial direction of the rotating ring. A plurality of the capsule placement grooves are arranged in an array along the circumferential direction of the rotating ring; A through hole is formed between the bottom of the capsule placement groove and the lower end surface of the rotating ring, so that the circumferential wall of the capsule can protrude from the bottom end surface of the rotating ring through the through hole; The width of the through hole is smaller than the diameter of the capsule to prevent the capsule from slipping out of the through hole.

[0008] Preferably, an arc-shaped stopper with an opening facing the capsule placement groove is arranged inside the rotating ring to prevent the capsules in the capsule placement groove from slipping out from the inside of the rotating ring.

[0009] Preferably, the capsule flipping assembly includes a rubber plate and a limiting plate. The rubber plate is arranged below the rotating ring, and the capsules in the capsule placement groove are in sliding contact with the rubber plate; The limiting plate is arranged above the rotating ring, and the limiting plate is arranged opposite to the rubber plate.

[0010] Preferably, the capsule appearance inspection assembly includes a capsule end inspection assembly and at least two capsule middle inspection assemblies. The capsule end inspection assembly is arranged opposite to the circumferential wall of the rotating ring, and the capsule middle inspection assemblies are arranged above the rotating ring.

[0011] Preferably, the driving assembly includes a driving motor. The rotating ring is installed on the driving shaft of the driving motor through a connecting rod. The driving motor drives the rotating ring to rotate, so that the capsules in the capsule placement groove sequentially pass through the capsule feeding device, the capsule flipping assembly and the capsule appearance inspection assembly.

[0012] Preferably, the two side edges of the rubber plate coincide with the diameter of the rotating ring.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. In the present invention, the rotating ring periodically picks up capsules - inspects the appearance of capsules - flips the capsules - inspects the appearance of capsules, so that the capsules can be continuously detected in a continuous conveying manner, and it can be applied to a continuous production line of capsules.

[0014] 2. In the present invention, during the rotation of the rotating ring, the rotating ring keeps the capsules passing through the capsule flipping assembly, and the capsule flipping assembly flips the capsules on the rotating ring so that the capsule appearance detection assembly at the rear can further detect the appearance of the capsules. This process is repeated to achieve a full-circle appearance detection of the capsules and improve the accuracy of capsule appearance detection.

[0015] 3. In the present invention, during the holding and movement of the capsules by the capsule holding assembly, the ends of the capsules are not blocked, and the capsule end detection assembly can synchronously detect the ends of the capsules. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a capsule appearance defect detection device according to the present invention; Figure 2 is a schematic sectional view of the rotating ring in a capsule appearance defect detection device according to the present invention; Figure 3 is a schematic structural diagram of the capsule holding structure in a capsule appearance defect detection device according to the present invention; Figure 4 is a schematic structural diagram when the capsule flipping assembly is implemented in a capsule appearance defect detection device according to the present invention; In the figure: 1 driving assembly, 101 driving motor, 102 driving shaft, 103 connecting rod, 2 capsule holding assembly, 201 rotating ring, 202 capsule placement groove, 203 through hole, 3 arc-shaped baffle, 4 capsule feeding device, 5 capsule end detection assembly, 6 capsule middle detection assembly, 7 capsule flipping assembly, 701 rubber plate, 702 limiting plate, 703 telescopic rod, 8 capsule. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0018] In order to solve the problems that there are detection blind spots during the detection of existing capsule appearance defects, the circumferential direction of the capsules cannot be completely detected, and the accuracy of capsule appearance detection is low.

[0019] Please refer to Figures 1-4 , the present invention provides a technical solution: a capsule appearance defect detection device, comprising: Capsule feeding device 4.

[0020] The capsule appearance detection component is used to detect the appearance of capsules within its detection range.

[0021] The capsule holding component 2 is arranged below the capsule feeding device 4, and there are multiple capsule holding structures on the capsule holding component 2 facing the capsule feeding device 4. The capsule holding structures are used to pick up capsules from the capsule feeding device 4.

[0022] At least one capsule flipping component 7 is arranged on the lower side of the capsule holding component 2. The capsule flipping component 7 is used to drive the capsules in the capsule holding structure to flip.

[0023] The driving component 1 is connected to the capsule holding component 2. The driving component is used to drive the capsule holding component 2 to move, so that the capsule holding structures on the capsule holding component 2 sequentially pass through the capsule feeding device 4, the capsule flipping component 7 and the capsule appearance detection component.

[0024] Among them, the feeding frequency of the capsule feeding device 4 is matched with the driving efficiency of the driving component 1 for driving the capsule holding structure, so that when the capsule holding structure is directly opposite to the capsule feeding device 4, the capsule 8 can be smoothly picked up by the capsule holding structure.

[0025] Then, the driving component 1 drives the capsule 8 to continue to move through the capsule appearance detection component. The capsule appearance detection component takes pictures of the appearance of the capsule 8 and conducts automatic comparison detection, so as to obtain whether there are defects in the appearance of the upper circumferential wall of the capsule 8.

[0026] Next, the driving component 1 continues to drive the capsule 8 to move. The capsule 8 passes through the capsule flipping component 7. The capsule flipping component 7 drives the capsule 8 in the capsule holding structure to flip, and the appearance of the flipped capsule 8 is detected by another subsequent capsule appearance detection component, so as to achieve the purpose of detecting the entire circumference of the capsule.

[0027] In this embodiment, the capsule holding component 2 includes a rotating ring 201, and the capsule feeding device 4, the capsule flipping component 7 and the capsule appearance detection component are sequentially arranged along the circumferential direction of the rotating ring 201.

[0028] With the rotation of the rotating ring 201, it is possible to continuously pick up the capsule 8 from the capsule feeding device 4 for continuous appearance detection - capsule flipping - appearance detection, which is suitable for a continuous capsule transmission production line.

[0029] In this embodiment, the capsule holding structure includes a capsule placement groove 202 opened on the upper end surface of the rotating ring 201. The capsule placement groove 202 is communicated with the circumferential wall of the rotating ring 201, and the length of the capsule placement groove 202 is arranged along the radial direction of the rotating ring 201. Multiple capsule placement grooves 202 are arranged in an array along the circumferential direction of the rotating ring 201.

[0030] Refer to Figure 3 As shown, a through hole 203 is provided between the bottom of the capsule placement groove 202 and the lower end surface of the rotating ring 201, so that the peripheral wall of the capsule 8 can protrude from the bottom end surface of the rotating ring 201 through the through hole 203.

[0031] The cross-section of the capsule placement groove 202 is V-shaped. After the capsule 8 falls into the capsule placement groove 202, under the action of its own gravity, the capsule 8 automatically slides to the through hole 203, and the V-shaped capsule placement groove 202 automatically clamps the capsule 8 to prevent the capsule 8 from shaking in the capsule placement groove 202.

[0032] The width of the through hole 203 is smaller than the diameter of the capsule 8 to prevent the capsule 8 from slipping out of the through hole 203.

[0033] In this embodiment, an arc-shaped stopper 3 with an opening facing the capsule placement groove 202 is provided inside the rotating ring 201. The capsule feeding device 4 is located outside the rotating ring 201, and the capsule 8 enters the capsule placement groove 202 from the outside of the rotating ring 201. Therefore, the arc-shaped stopper 3 is used to prevent the capsule 8 in the capsule placement groove 202 from slipping out from the inside of the rotating ring 201.

[0034] In this embodiment, the capsule flipping assembly 7 includes a rubber plate 701 and a limiting plate 702. The rubber plate 701 is arranged below the rotating ring 201, and multiple fine lines along the circumferential direction of the rotating ring 201 are provided on the upper end surface of the rubber plate 701 to increase the friction between the rubber plate 701 and the capsule 8 through the fine lines.

[0035] As can be seen from the above, a part of the peripheral wall of the capsule 8 can protrude below the rotating ring 201 through the through hole 203. Refer to Figure 4 As shown, when the rotating ring 201 rotates past the rubber plate 701, the peripheral wall of the capsule 8 contacts the rubber plate 701, and there is a large friction between the rubber plate 701 and the capsule 8. As the rotating ring 201 rotates, the capsule 8 flips in the capsule placement groove 202, so that the bottom of the capsule 8 flips to the upper part.

[0036] Furthermore, the limiting plate 702 is arranged above the rotating ring 201 and is disposed opposite to the rubber plate 701. When the capsule 8 contacts the rubber plate 701, under the lifting action of the rubber plate 701, the capsule 8 rises in the capsule placement groove 202 so that the top of the capsule 8 abuts against the phase plate 702. Thus, it can not only prevent the capsule 8 from shaking in the capsule placement groove 202, but also limit the capsule 8, enabling the rubber plate 701 to drive the capsule 8 to flip more stably.

[0037] The upper end of the limit plate 702 is installed through the telescopic rod 703, and the limit plate 702 is driven to move up and down and fixed through the telescopic rod 703, so as to realize that the limit plate 702 can limit capsules 8 with different diameters.

[0038] Among them, as shown in Figure 1 , the two side edges of the rubber plate 701 coincide with the radial direction of the rotating ring 201. When the rotating ring 201 drives the capsule 8 to move past the rubber plate 701, the bottom circumferential wall of the capsule 8 can contact the rubber plate 701, so that both ends of the capsule 8 are driven to flip simultaneously, and then the capsule 8 can flip along its axis, avoiding eccentric flipping of the capsule 8, and more precisely controlling the flipping angle of the capsule 8 and the drive control of the flipping of the capsule 8.

[0039] In order to be able to detect the appearance of the circumferential wall and both ends of the capsule 8 at the same time, in this embodiment, as shown in Figure 1 and Figure 2 , the capsule appearance detection assembly includes a capsule end detection assembly 5 and at least two capsule middle detection assemblies 6.

[0040] Among them, the capsule middle detection assembly 6 is arranged above the rotating ring 201. The capsule middle detection assembly 6 performs camera detection on the upper appearance of the capsule 8 from above the capsule 8, and multiple capsule middle detection assemblies 6 are respectively arranged on the front and back sides of the capsule flipping assembly 7, so as to detect the appearance of different positions of the capsule 8 before and after flipping.

[0041] An image processing module is arranged inside the capsule middle detection assembly 6. By splicing the appearance images of the capsule 8 before and after flipping through the image processing module, an image of the entire circumference of the capsule 8 can be obtained, and the image of the entire circumference of the capsule 8 is compared with a preset normal capsule image therein, so as to realize the appearance detection of the entire circumference of the capsule 8.

[0042] Among them, the capsule end detection assembly 5 is arranged opposite to the circumferential wall of the rotating ring 201. A lighting lamp is arranged at the capsule end detection assembly 5, and the light beam of the lighting lamp is arranged along the radial direction of the rotating ring 201. The lighting lamp irradiates the ends of the capsule 8, so that both ends of the capsule can be exposed by the light beam, enabling the capsule end detection assembly 5 to detect the appearance of both ends of the capsule at the same time.

[0043] As shown in Figure 2 , in this embodiment, the drive assembly 1 includes a drive motor 101. The rotating ring 201 is installed on the drive shaft 102 of the drive motor 101 through a connecting rod 103, and the drive motor 101 drives the rotating ring 201 to rotate.

[0044] The driving motor 101 preset the operating mode through the controller. The driving motor 101 drives the rotating speed of the rotating ring 201 to be controllable, so that when the capsule holding structure on the rotating ring 201 is aligned with the capsule feeding device 4, the feeding device 4 discharges a capsule 8, and so on in a cycle.

[0045] Refer to the attached Figure 1 As shown, with the driving of the rotating ring 201 by the driving motor 101, the capsules 8 in the capsule holding structure on the rotating ring 201 sequentially pass through the capsule middle detection component 6 - the capsule flipping component 7 - the capsule middle detection component 6... - the capsule end detection component 5. In this way, the continuous full - circumference and end appearance detection of the capsules 8 can be realized.

[0046] Furthermore, a rejection device and a receiving hopper are arranged at the circumferential wall of the rotating ring 201. After the detection by the capsule end detection component 5 and the capsule middle detection component 6, with the rotation of the rotating ring 201, the rejection device rejects the corresponding unqualified capsules into the receiving hopper.

[0047] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A capsule appearance defect detection device, characterized in that, Comprising: a capsule feeding device (4); a capsule appearance detection component for detecting the appearance of capsules within its detection range; a capsule holding component (2) disposed below the capsule feeding device (4), and the capsule holding component (2) has a plurality of capsule holding structures facing the capsule feeding device (4), and the capsule holding structures are used to pick up capsules from the capsule feeding device (4); at least one capsule flipping component (7), the capsule flipping component (7) is disposed below the capsule holding component (2), and the capsule flipping component (7) is used to drive the capsules within the capsule holding structures to flip; a driving component (1) connected to the capsule holding component (2), and the driving component is used to drive the capsule holding component (2) to move so that the capsule holding structures on the capsule holding component (2) sequentially pass through the capsule feeding device (4), the capsule flipping component (7), and the capsule appearance detection component.

2. The capsule appearance defect detection device according to claim 1, wherein: The capsule holding component (2) includes a rotating ring (201), and the capsule feeding device (4), the capsule flipping component (7), and the capsule appearance detection component are sequentially arranged along the circumferential direction of the rotating ring (201).

3. The capsule appearance defect detection device according to claim 2, characterized in that: The capsule holding structure includes a capsule placement groove (202) formed on the upper end surface of the rotating ring (201), the capsule placement groove (202) communicates with the circumferential wall of the rotating ring (201), and the length of the capsule placement groove (202) is arranged along the radial direction of the rotating ring (201), and a plurality of the capsule placement grooves (202) are arranged in an array along the circumferential direction of the rotating ring (201); a through hole (203) is formed between the bottom of the capsule placement groove (202) and the lower end surface of the rotating ring (201) so that the circumferential wall of the capsule (8) can protrude from the bottom end surface of the rotating ring (201) through the through hole (203); the width of the through hole (203) is smaller than the diameter of the capsule (8) to prevent the capsule (8) from slipping out of the through hole (203).

4. The capsule appearance defect detection device according to claim 3, characterized in that: An arc-shaped stopper (3) with an opening facing the capsule placement groove (202) is arranged inside the rotating ring (201) to prevent the capsules (8) in the capsule placement groove (202) from slipping out from the inside of the rotating ring (201).

5. The appearance defect detection device for a capsule according to claim 3, wherein: The capsule flipping component (7) includes a rubber plate (701) and a limiting plate (702), the rubber plate (701) is disposed below the rotating ring (201), and the capsules (8) in the capsule placement groove (202) are in sliding contact with the rubber plate (701); the limiting plate (702) is disposed above the rotating ring (201), and the limiting plate (702) is disposed opposite to the rubber plate (701).

6. The appearance defect detection device for a capsule according to claim 2, wherein: The capsule appearance detection component includes a capsule end detection component (5) and at least two capsule middle detection components (6), the capsule end detection component (5) is disposed opposite to the circumferential wall of the rotating ring (201), and the capsule middle detection components (6) are disposed above the rotating ring (201).

7. An appearance defect detection device for a capsule according to claim 3, characterized in that: The driving component (1) includes a driving motor (101), the rotating ring (201) is installed on the driving shaft (102) of the driving motor (101) through a connecting rod (103), and the driving motor (101) drives the rotating ring (201) to rotate, so that the capsules in the capsule placement groove (202) sequentially pass through the capsule feeding device (4), the capsule flipping assembly (7), and the capsule appearance detection assembly.

8. An appearance defect detection device for capsules according to claim 5, characterized in that: Both side edges of the rubber plate (701) coincide with the diameter of the rotating ring (201).

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