A medicine plate automatic detection device

Abstract

The utility model discloses a kind of automatic detection device of medicine plate, it is related to automatic detection technical field.Automatic detection device of medicine plate includes, rack main body, transmission assembly, detection component and reject component, transmission assembly includes first conveying mechanism and second conveying mechanism, first conveying mechanism is connected the bottom of medicine plate and carries out transport operation, second conveying mechanism is connected the top of medicine plate and carries out transport operation, detection component is set in top surface detection area and bottom surface detection area, and detection component includes industrial camera and transmission detector;Reject component includes the blowing mechanism being set in rack main body, and blowing mechanism is according to the inspection result of detection component to the medicine plate blowing rejection of transmission assembly downstream portion.Detection method uses automatic detection device of medicine plate.The automatic detection device of medicine plate of the utility model can realize the overall detection of upper and lower two sides and content of medicine plate, improve detection efficiency and accuracy, and guarantee medicine packaging quality.

Description

Technical Field

[0001] This utility model relates to the field of automatic detection technology, specifically to an automatic detection device for medicine blister packs. Background Technology

[0002] In the pharmaceutical industry, drug quality is paramount, and packaging, as a crucial part of drug production, directly determines the final quality of the drug through the appearance and contents of the blister pack, and is closely related to patient safety. Common defects in blister pack packaging include missing tablets, breakage, deformation, and stains. If these defects are not effectively detected and eliminated, they will directly endanger the health of drug users.

[0003] Traditional blister pack inspection relies on manual inspection, which has several inherent drawbacks: First, it's difficult to standardize inspection criteria, as different inspectors have subjective differences in defect thresholds, leading to inconsistent results. Second, prolonged manual inspection can cause visual fatigue, significantly reducing accuracy with increasing work hours. Third, manual inspection is inefficient and cannot meet the high-speed production demands of modern production lines, hindering overall production efficiency. Therefore, replacing manual inspection with automated inspection technology is imperative.

[0004] Currently, vision inspection equipment based on industrial cameras has emerged in the industry, but it still has significant technical limitations: existing inspection equipment can generally only inspect one side of the blister pack. To achieve comprehensive inspection of both sides of the blister pack and its contents, an additional flipping mechanism must be configured to flip the blister pack. This extra step not only increases the complexity and manufacturing cost of the equipment, but also prolongs the inspection process, reduces inspection efficiency, and may cause secondary damage to the blister pack during the flipping process, further affecting the quality of the medicine.

[0005] Therefore, existing technologies need to be improved. Utility Model Content

[0006] The technical problem to be solved by this utility model is that the accuracy and efficiency of manual inspection in the prior art are low, and the existing visual inspection equipment requires flipping to fully inspect. The purpose is to provide an automatic detection device for medicine blister packs, which can realize full inspection of the top and bottom surfaces of the medicine blister pack and its contents, improve detection efficiency and accuracy, and ensure the quality of medicine packaging.

[0007] This utility model is achieved through the following technical solution:

[0008] This utility model provides an automatic detection device for medicine blister packs, which includes,

[0009] The main body of the frame is provided with a top detection area and a bottom detection area;

[0010] Transmission assembly: The transmission assembly includes a first conveying mechanism located in the top detection area and a second conveying mechanism located in the bottom detection area. The first conveying mechanism is connected to the bottom of the medicine plate for transportation operations, and the second conveying mechanism is connected to the top of the medicine plate for transportation operations. During transportation operations, the top of the medicine plate is exposed in the top detection area, and the bottom of the medicine plate is exposed in the bottom detection area.

[0011] Detection Components: The detection components are disposed in the top detection area and the bottom detection area, and the detection components include an industrial camera and a transmission detector;

[0012] The rejection assembly includes an air blowing mechanism disposed on the main body of the frame, which blows air to reject the medicine plates in the downstream part of the transmission assembly based on the inspection results of the detection assembly.

[0013] Furthermore, in this utility model, the first conveying mechanism is configured as a belt conveyor, and the second conveying mechanism is configured as a negative pressure conveyor belt. The negative pressure conveyor belt is located between the two belt conveyors, with the left end of the negative pressure conveyor belt coinciding with the right end of the left belt conveyor and the right end of the negative pressure conveyor belt coinciding with the left end of the right belt conveyor.

[0014] Furthermore, in this utility model, the above also includes a detection computer, which is electrically connected to the transmission assembly, the detection assembly, and the rejection assembly. The detection computer is also electrically connected to a sensor that detects the passage of the drug plate. One sensor is located at the entrance of the transmission assembly, and the other sensor is located on the upstream side of the rejection assembly.

[0015] Furthermore, in this utility model, the aforementioned industrial cameras are arranged in three groups from upstream to downstream along the transport direction. The first group of industrial cameras is located in the top surface detection area, and the second and third groups of industrial cameras are located in the bottom surface detection area.

[0016] Furthermore, in this utility model, the industrial cameras in the first group detect the top surface of the medicine plate from the front, the industrial cameras in the second group detect the bottom surface of the medicine plate from the front, and the two industrial cameras in the third group detect the bottom surface of the medicine plate from the left and right oblique directions.

[0017] Furthermore, in this invention, the aforementioned transmission detector is located in the top surface detection area, and the transmission detector detects the top surface of the medicine plate in the forward direction.

[0018] Furthermore, in this utility model, the aforementioned blowing mechanism is provided with air holes for blowing towards the medicine plate, and the blowing mechanism is provided with a collection box for receiving the blown-away medicine plate.

[0019] Furthermore, in this invention, the aforementioned air holes are arranged in a row parallel to the first conveying mechanism.

[0020] Furthermore, in this invention, the second conveying mechanism is provided with a suction cup for absorbing the top of the medicine plate.

[0021] Furthermore, in this invention, the aforementioned transmission detector is configured as an X-ray detection instrument.

[0022] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0023] 1. Achieve comprehensive inspection without flipping: Through the coordinated design of the first conveying mechanism (bottom support) and the second conveying mechanism (top adsorption), the top and bottom surfaces of the blister pack are exposed sequentially during transportation. No additional flipping mechanism is required to complete the appearance inspection of the top and bottom surfaces and the transmission inspection of the contents. This effectively simplifies the equipment structure, reduces manufacturing costs, and avoids secondary damage to the blister pack during the flipping process.

[0024] 2. High detection accuracy: The industrial camera and X-ray transmission detector are combined into one to achieve dual detection. Three sets of industrial cameras are used to acquire images from multiple angles (1 set on the top surface and 3 sets on the bottom surface), which can effectively identify minute defects on the surface of the medicine plate; the X-ray transmission detector can accurately detect missing, damaged and foreign objects in the medicine plate, and can detect medicine even in opaque packaging.

[0025] 3. High degree of automation: The transmission, detection and rejection components are centrally controlled by a detection computer, and photoelectric sensors enable fully automated triggering of the entire process without human intervention. It can work continuously for 24 hours and is more efficient than manual detection.

[0026] 4. Wide Applicability: Utilizing a combination of industrial camera and transmission imaging, this device can detect defects in tablets, capsules, and other dosage forms, including empty plates, missing capsules (more than one), missing tablets (more than one), broken tablets, mixed tablets, black spots, misaligned characters, missing batch numbers, PVC damage, unclear texture, punched characters, burrs, misaligned aluminum foil, pitting defects, damaged aluminum foil, hair, black foreign objects, aluminum foil joints, double-capped capsules, split capsules, foreign objects made of metal or high-density materials (high-density rubber, bone, agglomerated minerals, high-density plastics, glass, ceramics, and other non-metallic materials), half-capsule structures, double-capped capsules, and deflated capsules. It can also be used in the food, chemical, plastics, and other industries besides the pharmaceutical industry. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0028] Figure 1 This is a schematic diagram of an automatic detection device for medicine blister packs according to the present invention;

[0029] Figure 2 This is a schematic diagram of the bottom surface of the medicine blister pack of this utility model;

[0030] Figure 3 This is a schematic diagram of the top surface of the medicine plate of this utility model.

[0031] The attached diagram shows the markings and corresponding component names: 1-Frame body, 101-Top surface detection area, 102-Bottom surface detection area, 2-First conveying mechanism, 3-Second conveying mechanism, 4-Industrial camera, 5-Transmission detector, 6-Blowing mechanism, 601-Collection box, 7-Detection computer, 8-Sensor. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only for explaining the present utility model and are not intended to limit the present utility model. The following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the present utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0033] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Example 1

[0035] This embodiment 1 provides an automatic detection device for medicine blister packs, such as... Figure 1 , Figure 2 and Figure 3 As shown, the specific structure is described below.

[0036] The automatic detection device for blister packs in this embodiment mainly consists of a frame body 1, a transmission assembly, a detection assembly, a rejection assembly, and a detection computer 7.

[0037] like Figure 1 As shown, the main frame 1 is a frame made of aluminum alloy profiles connected to each other. The surface is sandblasted and rust-removed, giving it good rust resistance and structural stability. A light shield is installed in the middle of the main frame 1. The light shield divides the interior of the light shield into two top detection areas 101 and one bottom detection area 102. The two areas are separated by the light shield, which can prevent interference from external light sources during the detection process. Adjustable feet are provided at the bottom of the main frame 1 to adjust the level of the equipment.

[0038] In this embodiment, combined with Figure 1 As shown, the transmission assembly includes two first transmission mechanisms 2 and one second transmission mechanism 3. The first transmission mechanism 2 adopts a belt conveyor and is installed on the top detection area 101 of the frame body 1. The second transmission mechanism 3 adopts a belt conveyor and is installed on the bottom detection area 102 of the frame body 1. A vacuum suction cup is installed on the conveyor belt of the second transmission mechanism 3 to form a negative pressure conveyor belt for sucking up the top of the medicine plate.

[0039] Furthermore, in combination Figure 1 As shown, the second conveying mechanism 3 is located between the two first conveying mechanisms 2. The left end of the negative pressure conveyor belt coincides with the right end of the left belt conveyor, and the right end of the negative pressure conveyor belt coincides with the left end of the right belt conveyor. The left and right ends of the negative pressure conveyor belt overlap with the two belt conveyors by 15cm-20cm respectively, ensuring a smooth transition of the medicine blister packs and preventing the medicine blister packs from shifting or jamming during transportation. The first conveying mechanism 2 lifts the bottom of the medicine blister pack for transportation, ensuring that the top of the medicine blister pack is completely exposed during transportation; the second conveying mechanism 3 absorbs the top of the medicine blister pack for transportation, ensuring that the bottom of the medicine blister pack is completely exposed during transportation.

[0040] The first conveying mechanism 2 is configured as a belt conveyor, which includes a driving roller, a driven roller, and a ring conveyor belt. The driving roller is driven by a stepper motor, and the conveying speed is adjusted by a frequency converter to adapt to the testing requirements of different specifications of blister packs. The second conveying mechanism 3 is configured as a negative pressure conveyor belt, which includes a conveyor belt body, a negative pressure chamber, and a vacuum pump. The conveyor belt body is equipped with a vacuum suction cup, and the vacuum pump generates negative pressure through the negative pressure chamber to achieve stable adsorption of the top of the blister pack.

[0041] In this embodiment, combined with Figure 1As shown, the detection assembly includes three sets of industrial cameras 4 and one transmission detector 5. The industrial cameras 4 and transmission detector 5 are used for image acquisition of the appearance of the blister pack and transmission detection of its contents, respectively. The first set contains one industrial camera 4, mounted on the frame body 1 of the top detection area 101 on the left, with the lens pointing vertically downwards. The second set contains one industrial camera 4, mounted on the frame body 1 of the bottom detection area 102 in the middle, with the lens pointing vertically upwards. The third set contains two industrial cameras 4, symmetrically mounted on the frame body 1 of the bottom detection area 102 in the middle, at a 45° angle to the horizontal, with the lenses pointing diagonally upwards. The industrial cameras 4 have built-in LED light sources to facilitate clear imaging.

[0042] Three sets of industrial cameras 4 are sequentially arranged from upstream to downstream along the transport direction of the medicine blister pack. Each set of industrial cameras 4 is equipped with a high-brightness LED light source with a color temperature adjustment range of 5000-6500K to ensure the clarity of image acquisition. The first set of industrial cameras 4 is vertically fixed above the top detection area 101, with the lens facing the top surface of the medicine blister pack. The second set of industrial cameras 4 is vertically fixed below the bottom detection area 102, with the lens facing the bottom surface of the medicine blister pack. The third set of industrial cameras 4 consists of two units, which are fixed at a 45° angle to the left and right sides of the bottom detection area 102, respectively, with the lens angled towards the bottom surface of the medicine blister pack, to achieve multi-angle image acquisition of the bottom surface of the medicine blister pack.

[0043] Furthermore, the transmission detector 5 is an X-ray inspection instrument. The transmission detector 5 is installed on the main body 1 of the frame in the top inspection area 101 on the right side, with the lens pointing vertically downwards. It is used to detect defects such as missing, broken, and foreign objects in the tablets inside the blister pack.

[0044] In this embodiment, combined with Figure 1 As shown, the rejection assembly includes an air blowing mechanism 6 mounted on the frame body 1. The air blowing mechanism 6 is electrically connected to the detection assembly and, based on the detection results, blows air to reject defective blister packs downstream of the transmission assembly. The air blowing mechanism 6 includes an air pump, an air blowing nozzle (with air holes), and a collection box 601, which is installed opposite the air blowing nozzle 6. The air holes of the air blowing nozzle have a diameter of 1 mm to 2.5 mm, allowing compressed air of 0.4 to 0.8 MPa to be ejected from these holes. The blister packs are moved due to the external force, ensuring they are blown into the collection box 601. The air holes are arranged in a row, parallel to the first conveying mechanism 2, resulting in better blister pack rejection.

[0045] In this embodiment, a detection computer 7 is also included. The detection computer 7 has a screen and built-in dedicated detection software. It is electrically connected to the drive motor of the transmission component, the industrial camera 4 and transmission detector 5 of the detection component, and the air blowing mechanism 6 of the rejection component. The detection computer 7 is also electrically connected to a photoelectric sensor 8. The photoelectric sensor 8 adopts a diffuse reflection photoelectric switch. One photoelectric sensor 8 is fixed at the entrance of the transmission component to detect the entry of the medicine plate and trigger the detection component to start. The other photoelectric sensor 8 is fixed 5-8cm upstream of the rejection component to detect whether the medicine plate has reached the rejection position and trigger the air blowing mechanism to act at regular intervals.

[0046] Example 2

[0047] This utility model also discloses a detection method, which uses the automatic blister pack detection device of the embodiment, and includes the following steps:

[0048] The equipment is initialized by setting detection parameters via the detection computer 7, including blister pack specifications, conveying speed, and detection accuracy thresholds. The detection accuracy threshold can be adjusted according to the type of blister pack. For example, for tablet blister packs, the threshold for determining missing tablets is set to 100% missing tablets, and the threshold for determining damage is set to determine that the damaged area exceeds 10%. The transmission assembly, detection assembly, and rejection assembly are started to ensure that each component is working properly.

[0049] The blister pack to be tested is placed manually or automatically at the entrance of the transmission assembly. Upon detection of the blister pack by the photoelectric sensor 8 at the entrance, a trigger signal is immediately sent to the detection computer 7, which then controls the detection assembly to start operation. The transmission assembly carries the blister pack into the left top surface detection area 101. The first set of industrial cameras 4 captures images of the top surface of the blister pack, and the captured top surface image data is transmitted to the detection computer 7 in real time. Next, the blister pack enters the bottom surface detection area 102. The second set of industrial cameras 4 captures images of the bottom surface of the blister pack from the front. A third set of two industrial cameras 4 captures images of the bottom surface of the blister pack from the left and right oblique directions, respectively, and the captured bottom surface image data is transmitted to the detection computer 7 in real time. Then, the blister pack enters the right top surface detection area 101, where the transmission detector 5 performs X-ray transmission detection on the top surface of the blister pack, and the acquired transmission detection data is transmitted to the detection computer 7 in real time.

[0050] After receiving the top surface image data, transmission detection data, and bottom surface image data, the detection software first preprocesses the image data, including noise reduction, enhancement, and binarization, to remove interference information in the image. Then, it compares the processed image data with the preset qualified drug plate image for feature comparison and compares the transmission detection data with the preset qualified drug plate transmission parameters for numerical comparison. Based on the comparison results, it determines whether the drug plate is qualified and stores the detection results (qualified / unqualified and defect type) in the database. If it is determined to be unqualified, the detection computer 7 marks the identity information of the unqualified drug plate (such as detection time, serial number, etc.) and generates a rejection signal.

[0051] The transmission assembly continues to transport the medicine plate to the rejection assembly. After the photoelectric sensor 8 upstream of the rejection assembly detects the medicine plate, it sends a position signal to the detection computer 7. The detection computer 7 retrieves the detection result of the medicine plate. If the rejection signal of the medicine plate is stored, it immediately controls the solenoid valve of the air blowing nozzle to operate. The air pump blows air onto the medicine plate through the air blowing nozzle, blowing the unqualified medicine plate into the collection box 601. If it is a qualified medicine plate, the air blowing mechanism 6 does not start, and the medicine plate is output from the discharge port downstream of the transmission assembly, completing the detection process.

[0052] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An automatic detection device for medicine blister packs, characterized in that, include, The main body of the frame (1): The main body of the frame (1) is provided with a top surface detection area (101) and a bottom surface detection area (102). Transmission assembly: The transmission assembly includes a first transmission mechanism (2) located in the top detection area (101) and a second transmission mechanism (3) located in the bottom detection area (102). The first transmission mechanism (2) is connected to the bottom of the medicine plate for transportation operations, and the second transmission mechanism (3) is connected to the top of the medicine plate for transportation operations. During transportation operations, the top of the medicine plate is exposed in the top detection area (101), and the bottom of the medicine plate is exposed in the bottom detection area (102). Detection components: The detection components are disposed in the top detection area (101) and the bottom detection area (102), and the detection components include an industrial camera (4) and a transmission detector (5). The rejection assembly includes an air blowing mechanism (6) disposed on the frame body (1), which blows air to reject the medicine plate in the downstream part of the transmission assembly according to the inspection result of the detection assembly.

2. The automatic blister pack detection device according to claim 1, characterized in that, The first conveying mechanism (2) is configured as a belt conveyor, and the second conveying mechanism (3) is configured as a negative pressure conveyor belt. The negative pressure conveyor belt is located between the two belt conveyors. The left end of the negative pressure conveyor belt coincides with the right end of the left belt conveyor, and the right end of the negative pressure conveyor belt coincides with the left end of the right belt conveyor.

3. The automatic blister pack detection device according to claim 1, characterized in that, It also includes a detection computer (7), which is electrically connected to the transmission assembly, the detection assembly and the rejection assembly. The detection computer (7) is also electrically connected to a sensor (8) for detecting the passage of the drug plate. One sensor (8) is located at the entrance of the transmission assembly and the other sensor (8) is located on the upstream side of the rejection assembly.

4. The automatic blister pack detection device according to claim 1, characterized in that, The industrial cameras (4) are arranged in three groups from upstream to downstream along the transport direction. The first group of industrial cameras (4) is located in the top surface detection area (101), and the second and third groups of industrial cameras (4) are located in the bottom surface detection area (102).

5. The automatic blister pack detection device according to claim 4, characterized in that, The first group of industrial cameras (4) detects the top surface of the medicine plate from the front, the second group of industrial cameras (4) detects the bottom surface of the medicine plate from the front, and the two industrial cameras (4) in the third group detect the bottom surface of the medicine plate from the left and right oblique directions.

6. The automatic detection device for medicine blister packs according to claim 5, characterized in that, The transmission detector (5) is located in the top surface detection area (101), and the transmission detector (5) detects the top surface of the medicine plate in the forward direction.

7. The automatic blister pack detection device according to claim 1, characterized in that, The blowing mechanism (6) is provided with air holes for blowing towards the medicine plate, and the blowing mechanism (6) is provided with a collection box (601) for receiving the blown-away medicine plate.

8. The automatic blister pack detection device according to claim 7, characterized in that, The air holes are arranged in a row parallel to the first conveying mechanism (2).

9. The automatic blister pack detection device according to claim 1, characterized in that, The second conveying mechanism (3) is equipped with a suction cup for absorbing the top of the medicine plate.

10. The automatic blister pack detection device according to claim 1, characterized in that, The transmission detector (5) is configured as an X-ray detection instrument.

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