Ear acupoint sticking granule appearance screening equipment

Abstract

This utility model discloses an appearance screening device for ear acupuncture patch granules, belonging to the technical field of screening equipment. The utility model includes a screening box, with a transport component inside the screening box and a vibrating feeding component on the outside. A vision inspection component and two sets of pneumatic discharge components are located outside the transport component. This utility model uses the vibrating feeding component to automatically drop spherical granules onto the transport component. Simultaneously, driven by the transport component, the spherical granules sequentially rotate past the vision inspection component and directly to the pneumatic discharge component. The pneumatic discharge component then activates based on the detection result of the vision inspection component, allowing the spherical granules to be discharged from the screening box when they reach their corresponding pneumatic discharge component. This configuration allows for automatic appearance inspection of the spherical granules, thus ensuring overall production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of screening equipment technology, and specifically relates to a screening device for the appearance of ear acupuncture patch particles. Background Technology

[0002] Ear acupoint patches, a common acupoint stimulation device, consist of medical adhesive tape and spherical particles attached to it. Their core mechanism of action involves precisely applying the tape with spherical particles to specific acupoints on the ear. The spherical particles apply continuous and stable physical pressure to the acupoints, thereby stimulating meridian responses, regulating organ function, and ultimately relieving discomfort or providing adjunctive treatment. Given that the spherical particles need to be in prolonged, direct contact with, and even slightly press on, the delicate skin of the ear during use, the quality requirements of their surface properties are particularly critical. Specifically, the spherical particles must have a high degree of roundness, ensuring a smooth surface without any sharp edges, and a complete structure without burrs or cracks.

[0003] In the screening of spherical particles, manual screening is still the mainstream method. Relying on manual sorting of each particle is not only time-consuming and labor-intensive, but also has a very limited processing capacity per unit time, resulting in low production efficiency and insufficient capacity. This leads to a longer production cycle and higher costs, making it difficult to meet the needs of large-scale production. More seriously, operators are prone to fatigue under long hours of repetitive and high-intensity labor, which inevitably increases the risk of missing unqualified particles. Utility Model Content

[0004] To address the problem of low efficiency in screening spherical particles, this invention proposes an ear acupuncture patch particle appearance screening device to overcome the aforementioned technical problems existing in related technologies.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a device for screening the appearance of ear acupuncture patch particles, including a screening box. The screening box is equipped with a transport component inside, a vibrating feeding component is equipped on the outside of the screening box, a visual inspection component and two sets of pneumatic discharge components are equipped on the outside of the transport component, an elastic connecting component is equipped inside the screening box, the elastic connecting component is connected to the air blowing end and the discharge end of the pneumatic discharge component, and a lifting component is equipped on the outside of the transport component.

[0007] The vibrating feeding assembly is used to feed spherical particles to the transport assembly, which in turn transports the spherical particles to the vision inspection assembly, so that the vision inspection assembly can perform appearance inspection on the spherical particles. At the same time, the two sets of pneumatic discharge assemblies classify and collect the spherical particles according to the inspection results.

[0008] Furthermore, the transport component includes a cavity, which is located inside the screening box. A rotating frame is rotatably connected inside the cavity, and a glass turntable is fixedly connected to the outer surface of the rotating frame. A material discharge trough is provided on the top of the glass turntable, and a limiting groove is provided at the bottom of the inner wall of the material discharge trough. Multiple limiting grooves are arranged in a circumferential array inside the material discharge trough. An installation groove is provided inside the screening box, and a motor is fixedly installed on the top of the inner wall of the installation groove. The output end of the motor is fixedly connected to the rotating frame.

[0009] Furthermore, the vibrating feeding assembly includes a support platform, which is disposed on one side of the screening box. A vibrating plate is fixedly installed on the top of the support platform, and a guide rail is fixedly connected to the top of the vibrating plate. One end of the guide rail is disposed on the upper side of the discharge chute. A limit frame is fixedly installed on the bottom of the inner wall of the cavity, and one end of the limit frame is disposed on the upper side of the discharge chute.

[0010] Furthermore, the visual inspection component includes a mounting frame, which is fixedly installed on the bottom of the inner wall of the cavity. A support frame is fixedly installed on the top of the inner wall of the mounting frame, and cameras are fixedly connected to the bottom of the support frame and the bottom of the inner wall of the mounting frame.

[0011] Furthermore, the pneumatic discharge assembly includes an air hole, which is located at the bottom of the inner wall of the limiting groove. A movable air pipe is provided at the bottom of the glass turntable corresponding to the air hole. A fixed air pipe is provided on the outer surface of the movable air pipe. The bottom end of the fixed air pipe extends into the interior of the mounting groove. An air pump is fixedly installed at the bottom of the inner wall of the mounting groove. The blowing end of the air pump is fixedly connected to the fixed air pipe. A movable discharge pipe is provided inside the material discharge trough corresponding to the movable air pipe. A fixed discharge pipe is provided on the outer surface of the movable discharge pipe. One end of the fixed discharge pipe extends into the outside of the screening box.

[0012] Furthermore, the elastic connection assembly includes a connecting pipe, which is fixedly connected to the outer surface of the movable discharge pipe. A connecting plate is fixedly connected to the outer surface of the movable air pipe. Connecting rods are fixedly connected to the bottom of the connecting pipe and the top of the connecting plate. A connecting frame is fixedly connected to the bottom of the inner wall of the cavity. Both connecting rods are movably connected to the connecting pipe. Springs are provided between the connecting pipe and the connecting frame, and between the connecting plate and the connecting frame.

[0013] Furthermore, the lifting assembly includes a lifting block, and several lifting blocks are fixedly connected to the outer surface of the glass turntable corresponding to the limiting groove. One end of the lifting block is tapered, and two connecting rods are rotatably connected to one end of each other with ball bearings.

[0014] This utility model has the following beneficial effects:

[0015] 1. This utility model utilizes a vibrating feeding component to automatically drop spherical particles onto a transport component. Simultaneously, driven by the transport component, the spherical particles sequentially rotate past the visual inspection component and directly to the pneumatic discharge component. The pneumatic discharge component then activates based on the visual inspection result, allowing the spherical particles to be discharged from the screening box when they reach their designated location. This automatic design ensures efficient production and prevents missed inspections, thus guaranteeing the quality of the spherical particles.

[0016] 2. This utility model uses springs on the outside of the two connecting rods to keep the ball bearings at the ends of the two connecting rods in contact under the pull of the springs. When the glass turntable rotates, multiple lifting blocks evenly distributed on its surface push the ball bearings through the conical surface, driving the two connecting rods to move the corresponding moving discharge pipe and moving air pipe synchronously, so that the two disengage from the turntable. When the limiting groove rotates to directly below the moving discharge pipe, the lifting blocks disengage from the ball bearings, and at the same time, the moving discharge pipe and moving air pipe re-engage with the glass turntable. The above-mentioned intermittent contact setting significantly reduces friction loss, while the double tight contact during the discharge stage ensures that spherical particles are discharged from the screening box without leakage.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the utility model embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the external outline structure of this utility model;

[0020] Figure 2 For the present utility model Figure 1 Rear view structural diagram;

[0021] Figure 3 This is a top sectional view of the screening box of this utility model;

[0022] Figure 4 This is a schematic diagram of the transportation component structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the glass turntable structure of this utility model;

[0024] Figure 6 For the present utility model Figure 5 A schematic diagram of the structure viewed from below;

[0025] Figure 7 This is a schematic diagram of the pneumatic material discharge assembly of this utility model;

[0026] Figure 8 For the present utility model Figure 7 Enlarged structural diagram at point A in the middle;

[0027] Figure 9 This is a schematic diagram of the visual inspection component structure of this utility model.

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 1. Screening box; 2. Transport assembly; 201. Cavity; 202. Rotating frame; 203. Glass turntable; 204. Drop chute; 205. Limiting groove; 206. Mounting groove; 207. Motor; 3. Vibrating feeding assembly; 301. Support platform; 302. Vibrating plate; 303. Guide rail; 304. Limiting frame; 4. Vision inspection assembly; 401. Mounting frame; 402. Support frame; 403. Camera; 5. Pneumatic discharge assembly; 501. Air hole; 502. Moving air pipe; 503. Fixed air pipe; 504. Air pump; 505. Moving discharge pipe; 506. Fixed discharge pipe; 6. Elastic connection assembly; 601. Connecting pipe; 602. Connecting plate; 603. Connecting rod; 604. Connecting frame; 605. Spring; 7. Lifting assembly; 701. Lifting block; 702. Ball bearing. Detailed Implementation

[0030] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0031] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0032] Please see Figures 1-9As shown, this utility model is an ear acupuncture patch particle appearance screening device, including a screening box 1. The screening box 1 is equipped with a transport component 2 inside. The screening box 1 is equipped with a vibrating feeding component 3 outside. The transport component 2 is equipped with a visual inspection component 4 and two sets of pneumatic discharge components 5 outside. The screening box 1 is equipped with an elastic connecting component 6 inside. The elastic connecting component 6 is connected to the air blowing end and the discharge end of the pneumatic discharge component 5. The transport component 2 is equipped with a lifting component 7 outside.

[0033] The vibrating feeding component 3 is used to feed spherical particles to the transport component 2. The transport component 2 is used to transport the spherical particles to the vision inspection component 4 so that the vision inspection component 4 can perform appearance inspection on the spherical particles. At the same time, the two sets of pneumatic discharge components 5 classify and collect the spherical particles according to the inspection results.

[0034] By feeding spherical particles requiring appearance inspection into the vibrating feeding assembly 3, the vibrating feeding assembly 3 continuously vibrates the spherical particles into the transport assembly 2. At the same time, the transport assembly 2 rotates and continuously transports the spherical particles to the vision inspection assembly 4. The vision inspection assembly 4 can inspect the appearance of the passing spherical particles. After the inspection is completed, the transport assembly 2 continues to drive the spherical particles to rotate. When the spherical particles rotate to the corresponding pneumatic discharge assembly 5, the corresponding pneumatic discharge assembly 5 is opened according to the inspection result, so that the spherical particles can fall directly into the discharge end under the blowing of the air end and be discharged from the inside of the screening box 1 through the discharge end.

[0035] The vibrating feeding component 3 allows spherical particles to automatically fall onto the transport component 2. Simultaneously, driven by the transport component 2, the spherical particles sequentially rotate past the vision inspection component 4 and directly to the pneumatic discharge component 5. At this point, the pneumatic discharge component 5 activates based on the detection result of the vision inspection component 4, allowing the spherical particles to be discharged from the screening box 1 when they reach their designated location. This setup enables automatic inspection of the spherical particles' appearance, ensuring overall production efficiency and preventing missed inspections, thus guaranteeing the quality of the spherical particles.

[0036] In one embodiment, the transport component 2 includes a cavity 201 located inside the screening box 1. A rotating frame 202 is rotatably connected inside the cavity 201. A glass turntable 203 is fixedly connected to the outer surface of the rotating frame 202. A material drop trough 204 is provided on the top of the glass turntable 203. A limiting groove 205 is provided on the bottom of the inner wall of the material drop trough 204. Multiple limiting grooves 205 are arranged in a circumferential array inside the material drop trough 204. An installation groove 206 is provided inside the screening box 1. A motor 207 is fixedly installed on the top of the inner wall of the installation groove 206. The output end of the motor 207 is fixedly connected to the rotating frame 202.

[0037] The motor 207 can intermittently drive the glass turntable 203 to rotate via the rotating frame 202, thereby allowing the vibrating feeding assembly 3 to sequentially vibrate the spherical particles into the limiting groove 205. At this time, the rotating glass turntable 203 can drive the spherical particles to rotate through the limiting groove 205, allowing the spherical particles to rotate past the vision inspection assembly 4. The setting of the limiting groove 205 ensures that the spherical particles will not be displaced inside the discharge groove 204 when the glass turntable 203 rotates. In addition, the overall transparent setting of the glass turntable 203 allows the subsequent vision inspection assembly 4 to better inspect the appearance of the spherical particles.

[0038] In one embodiment, the vibrating feeding assembly 3 includes a support platform 301, which is disposed on one side of the screening box 1. A vibrating plate 302 is fixedly installed on the top of the support platform 301. A guide rail 303 is fixedly connected to the top of the vibrating plate 302. One end of the guide rail 303 is disposed on the upper side of the discharge chute 204. A limit frame 304 is fixedly installed on the bottom of the inner wall of the cavity 201. One end of the limit frame 304 is disposed on the upper side of the discharge chute 204.

[0039] By feeding spherical particles into the vibratory feeder 302, the vibratory feeder 302 rotates and continuously vibrates the spherical particles into the guide rail 303. Guided by the guide rail 303, the spherical particles can fall directly into the discharge trough 204. When the spherical particles do not fall precisely into the corresponding limiting groove 205, the limiting frame 304 can push the spherical particles inside the discharge trough 204 as the glass turntable 203 rotates. When the spherical particles are aligned with the corresponding limiting groove 205, they can fall directly into the limiting groove 205. This design ensures that the spherical particles can only pass through the limiting frame 304 normally when they are inside the limiting groove 205, thus guaranteeing the stability of the glass turntable 203 when it rotates with the spherical particles.

[0040] In one embodiment, the visual inspection component 4 includes a mounting bracket 401, which is fixedly installed on the bottom of the inner wall of the cavity 201. A support bracket 402 is fixedly installed on the top of the inner wall of the mounting bracket 401, and cameras 403 are fixedly connected to the bottom of the support bracket 402 and the bottom of the inner wall of the mounting bracket 401.

[0041] Since the glass turntable 203 rotates intermittently under the drive of the motor 207, this setting allows each limiting groove 205 to pause briefly when it is between several cameras 403, thereby enabling the several cameras 403 to work together to better scan and capture the appearance of the spherical particles.

[0042] Specific detection process: Multiple cameras 403 are used to acquire high-speed, multi-angle images (micron-level precision) of the spherical particles on the glass turntable 203. After Gaussian filtering for noise reduction and edge contour extraction, the system performs a triple core analysis:

[0043] (1) Roundness: Calculate the coincidence of the profile with the minimum circumcircle (roundness coefficient ≥ 0.95 is qualified), and detect the sharp corners by Hough transform (radius of curvature < 50μm alarm);

[0044] (2) Smoothness: Scan the surface grayscale variance in different regions (to identify scratches / dents), and analyze the texture roughness using Fourier transform;

[0045] (3) Integrity: Morphological operations locate burrs (protrusion aspect ratio > 3:1 are rejected), Sobel enhanced edge + connected domain analysis captures cracks (> 200μm are rejected).

[0046] In one embodiment, the pneumatic discharge assembly 5 includes an air hole 501, which is located at the bottom of the inner wall of the limiting groove 205. A movable air pipe 502 is provided at the bottom of the glass turntable 203 corresponding to the air hole 501. A fixed air pipe 503 is provided on the outer surface of the movable air pipe 502. The bottom end of the fixed air pipe 503 extends into the interior of the mounting groove 206. An air pump 504 is fixedly installed at the bottom of the inner wall of the mounting groove 206. The blowing end of the air pump 504 is fixedly connected to the fixed air pipe 503. A movable discharge pipe 505 is provided inside the material discharge trough 204 corresponding to the movable air pipe 502. A fixed discharge pipe 506 is provided on the outer surface of the movable discharge pipe 505. One end of the fixed discharge pipe 506 extends into the outside of the screening box 1.

[0047] When the vision system determines that the spherical particles are qualified / unqualified, it simultaneously outputs the detection result and particle position code. The encoder set on the glass turntable 203 tracks the movement of the particles in real time. After the particles enter the corresponding sorting area (qualified products go to the moving air pipe 502 corresponding to air pump 504A, and unqualified products go to the moving air pipe 502 corresponding to air pump 504B), the PLC can drive the corresponding air pump 504 under the positioning of the encoder. At this time, the airflow generated by the corresponding air pump 504 flows through the fixed air pipe 503, the moving air pipe 502 and the air hole 501 to the inside of the limiting groove 205. The spherical particles inside the limiting groove 205 can fall directly into the inside of the moving discharge pipe 505 under the blowing of the airflow, and flow to the outside of the screening box 1 under the guidance of the moving discharge pipe 505 and the fixed discharge pipe 506.

[0048] In one embodiment, the elastic connection assembly 6 includes a connecting pipe 601, which is fixedly connected to the outer surface of the movable discharge pipe 505. A connecting plate 602 is fixedly connected to the outer surface of the movable air pipe 502. A connecting rod 603 is fixedly connected to the bottom of the connecting pipe 601 and the top of the connecting plate 602. A connecting frame 604 is fixedly connected to the bottom of the inner wall of the cavity 201. Both connecting rods 603 are movably connected to the connecting frame 604. Springs 605 are provided between the connecting pipe 601 and the connecting frame 604 and between the connecting plate 602 and the connecting frame 604.

[0049] Two springs 605 can be pulled by corresponding connecting rods 603. At this time, the connecting pipe 601 and the connecting plate 602 move towards each other under the drive of the corresponding connecting rods 603, so that the moving discharge pipe 505 can contact the bottom of the inner wall of the discharge trough 204, while the moving air pipe 502 contacts the bottom of the glass turntable 203. The setting of the springs 605 in the above configuration allows the airflow to flow better through the moving air pipe 502 and the air hole 501 into the interior of the moving discharge pipe 505, and also further improves the effect of discharging the spherical particles that have completed the test.

[0050] In one embodiment, the lifting assembly 7 includes a lifting block 701. Several lifting blocks 701 are fixedly connected to the outer surface of the glass turntable 203 corresponding to the limiting groove 205. One end of the lifting block 701 is tapered, and two connecting rods 603 are rotatably connected to one end of each other with ball bearings 702.

[0051] Under the pull of spring 605, the ball bearings 702 on the two connecting rods 603 come into contact. When the glass turntable 203 rotates, the conical surface of the lifting block 701 can lift the two connecting rods 603 through the ball bearings 702, thereby causing the two connecting rods 603 to drive the corresponding moving discharge pipe 505 and moving air pipe 502 to move, and causing them to separate from the glass turntable 203. When the limiting groove 205 rotates to directly below the moving discharge pipe 505, the lifting block 701 no longer lifts the two connecting rods 603. At this time, under the elastic force of spring 605, the moving discharge pipe 505 can... The bottom of the inner wall of the discharge chute 204 is in contact with each other, while the moving air pipe 502 is in contact with the bottom of the glass turntable 203. Since multiple lifting blocks 701 are provided on the outer surface of the glass turntable 203, the moving discharge pipe 505 and the moving air pipe 502 will not be in contact with the glass turntable 203 for a long time when the glass turntable 203 is rotating, effectively avoiding damage to the moving discharge pipe 505 and the moving air pipe 502 due to friction. At the same time, during discharge, the two can be in close contact with the glass turntable 203, so that the spherical particles are discharged from the inside of the screening box 1.

[0052] Through the above technical solution, 1. The vibrating feeding component 3 allows the spherical particles to automatically fall onto the transport component 2. Simultaneously, driven by the transport component 2, the spherical particles can sequentially rotate past the vision inspection component 4 and directly to the pneumatic discharge component 5. At this time, the pneumatic discharge component 5 can be activated based on the detection result of the vision inspection component 4, allowing the spherical particles to be discharged from the inside of the screening box 1 when they reach the corresponding pneumatic discharge component 5. This setup allows for automatic inspection of the appearance of the spherical particles, ensuring overall production efficiency and preventing missed inspections, thus guaranteeing the quality of the spherical particles; 2. Through two connecting... A spring 605 is provided on the outside of the rod 603, so that the balls 702 at the ends of the two connecting rods 603 are kept in contact under the pull of the spring 605. When the glass turntable 203 rotates, multiple lifting blocks 701 evenly distributed on its surface push the balls 702 through the conical surface, driving the two connecting rods 603 to move the corresponding moving discharge pipe 505 and moving air pipe 502 synchronously, so that the two are disengaged from the turntable. When the limiting groove 205 rotates to directly below the moving discharge pipe 505, the lifting block 701 disengages from the balls 702, and at the same time, the moving discharge pipe 505 and moving air pipe 502 come into contact with the glass turntable 203 again. The above intermittent contact setting significantly reduces friction loss, while the double tight contact in the discharge stage can ensure that spherical particles are discharged from the screening box 1 without leakage.

[0053] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0054] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An ear acupuncture patch particle appearance screening device, comprising a screening box (1), characterized in that, The screening box (1) is equipped with a transport component (2) inside, a vibrating feeding component (3) is provided on the outside of the screening box (1), a visual inspection component (4) and two sets of pneumatic discharge components (5) are provided on the outside of the transport component (2), an elastic connecting component (6) is provided inside the screening box (1), the elastic connecting component (6) is connected to the air blowing end and the discharge end of the pneumatic discharge component (5), and a lifting component (7) is provided on the outside of the transport component (2). The vibrating feeding assembly (3) is used to feed spherical particles to the transport assembly (2), and the transport assembly (2) is used to transport the spherical particles to the visual inspection assembly (4) so ​​that the visual inspection assembly (4) can perform appearance inspection on the spherical particles. At the same time, the two sets of pneumatic discharge assemblies (5) classify and collect the spherical particles according to the inspection results.

2. The ear acupuncture patch particle appearance screening device according to claim 1, characterized in that, The transport component (2) includes a cavity (201) which is located inside the screening box (1). A rotating frame (202) is rotatably connected inside the cavity (201). A glass turntable (203) is fixedly connected to the outer surface of the rotating frame (202). A material drop trough (204) is provided on the top of the glass turntable (203). A limiting groove (205) is provided at the bottom of the inner wall of the material drop trough (204). Multiple limiting grooves (205) are arranged in a circular array inside the material drop trough (204). An installation groove (206) is provided inside the screening box (1). A motor (207) is fixedly installed on the top of the inner wall of the installation groove (206). The output end of the motor (207) is fixedly connected to the rotating frame (202).

3. The ear acupuncture patch particle appearance screening device according to claim 2, characterized in that, The vibrating feeding assembly (3) includes a support platform (301), which is located on one side of the screening box (1). A vibrating plate (302) is fixedly installed on the top of the support platform (301), and a guide rail (303) is fixedly connected to the top of the vibrating plate (302). One end of the guide rail (303) is located on the upper side of the discharge chute (204). A limit frame (304) is fixedly installed at the bottom of the inner wall of the cavity (201), and one end of the limit frame (304) is located on the upper side of the discharge chute (204).

4. The ear acupuncture patch particle appearance screening device according to claim 2, characterized in that, The visual inspection component (4) includes a mounting bracket (401), which is fixedly installed on the bottom of the inner wall of the cavity (201). A support bracket (402) is fixedly installed on the top of the inner wall of the mounting bracket (401). Cameras (403) are fixedly connected to the bottom of the support bracket (402) and the bottom of the inner wall of the mounting bracket (401).

5. The ear acupuncture patch particle appearance screening device according to claim 2, characterized in that, The pneumatic discharge assembly (5) includes an air hole (501), which is located at the bottom of the inner wall of the limiting groove (205). A movable air pipe (502) is provided at the bottom of the glass turntable (203) corresponding to the air hole (501). A fixed air pipe (503) is provided on the outer surface of the movable air pipe (502). The bottom end of the fixed air pipe (503) extends into the interior of the mounting groove (206). An air pump (504) is fixedly installed at the bottom of the inner wall of the mounting groove (206). The blowing end of the air pump (504) is fixedly connected to the fixed air pipe (503). A movable discharge pipe (505) is provided inside the material drop trough (204) corresponding to the movable air pipe (502). A fixed discharge pipe (506) is provided on the outer surface of the movable discharge pipe (505). One end of the fixed discharge pipe (506) extends into the exterior of the screening box (1).

6. The ear acupuncture patch particle appearance screening device according to claim 5, characterized in that, The elastic connection assembly (6) includes a connecting pipe (601), which is fixedly connected to the outer surface of the movable discharge pipe (505). A connecting plate (602) is fixedly connected to the outer surface of the movable air pipe (502). A connecting rod (603) is fixedly connected to the bottom of the connecting pipe (601) and the top of the connecting plate (602). A connecting frame (604) is fixedly connected to the bottom of the inner wall of the cavity (201). Both connecting rods (603) are movably connected to the connecting frame (604). Springs (605) are provided between the connecting pipe (601) and the connecting frame (604) and between the connecting plate (602) and the connecting frame (604).

7. The ear acupuncture patch particle appearance screening device according to claim 6, characterized in that, The lifting assembly (7) includes a lifting block (701), and several lifting blocks (701) are fixedly connected to the outer surface of the glass turntable (203) corresponding to the limiting groove (205). One end of the lifting block (701) is tapered, and two connecting rods (603) are rotatably connected to one end of each other with ball bearings (702).

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