Oral liquid lamp inspection device

Abstract

The invention relates to the technical field of oral liquid lamp inspection devices, in particular to an oral liquid lamp inspection device. Comprising a frame, a clamping station, a vibrating and rotating station, an overturning station and a self-rotating station are sequentially arranged on the frame in the anticlockwise direction, four workpiece loading mechanisms are arranged on the reversing frame, and each workpiece loading mechanism comprises a vibrating frame slidably connected to the reversing frame and an overturning frame rotatably connected to the vibrating frame; a vibration generating assembly for driving the vibration frame to vertically vibrate is arranged between the vibration frame and the reversing frame, a mandrel and a driving clamping table are rotationally connected to the overturning frame, a clamping seat is slidably connected to the overturning frame, a clamping spring is arranged between the clamping seat and the overturning frame, a temperature control clamping table is rotationally connected to the clamping seat, and dust suppression spraying holes are evenly distributed in the bottom face of the driving clamping table. Oral liquid to be detected is clamped between the driving clamping table and the temperature control clamping table. The device has the beneficial effects that the foreign matter suspension and detection coverage effect is optimized through deep cooperation of the vibration generation assembly and the spinning action.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oral liquid lamp inspection device, in particular to a lamp inspection device for oral liquid. BACKGROUND

[0002] As a common liquid preparation, one of the core links of quality control of oral liquid is to detect whether there are micro-foreign matters such as fibers, glass chips, metal particles and surface defects of the oral liquid to be detected in the liquid through a lamp inspection device, so as to avoid unqualified products from flowing into the market. With the continuous improvement of the precision requirements of the pharmaceutical industry on product quality, the existing oral liquid lamp inspection device gradually exposes many technical shortcomings, and the specific problems are as follows: In order to realize the suspension of liquid foreign matters, the existing lamp inspection device mostly adopts a uniform-speed vibration mechanism with a single amplitude, but this design has significant limitations: if the vibration amplitude is too small, the cohesion of micro-foreign matters cannot be effectively broken, and the foreign matters are easy to deposit on the bottom of the bottle or adhere to the bottle wall, which is difficult to be suspended in the middle of the liquid to be captured by the CCD camera; if the vibration amplitude is too large, a large number of bubbles will be generated in the liquid, which not only may block the unsuspended foreign matters, but also may be mistaken for micro-foreign matters, resulting in detection interference and reducing the detection accuracy. At the same time, the existing device generally lacks a targeted posture adjusting structure for the oral liquid to be detected, and the oral liquid to be detected is mostly kept in a fixed upright state during the detection process. Under the action of gravity, the flowability of the liquid in the upper and lower parts of the oral liquid to be detected is much lower than that in the middle part, so the impact force generated by the vibration mechanism cannot be transmitted to these areas, so that the foreign matters such as sealing chips attached to the inner side of the bottle cap and impurities deposited on the bottom of the bottle cannot be effectively disturbed and suspended, forming an obvious detection blind area. The foreign matters in this blind area become the main source of missed detection; Based on this, the present application provides a lamp inspection device for oral liquid to solve the problems raised in the background art. SUMMARY

[0003] The present application provides a lamp inspection device for oral liquid to solve the problem of high missed detection rate of micro-foreign matters in the liquid in the prior art.

[0004] The technical solution of the present application to solve the above technical problems is as follows: a lamp inspection device for oral liquid, comprising a frame, a clamping station, a vibration station, a turnover station and a spinning station are sequentially arranged on the frame in counterclockwise direction, and a rotary frame is further provided, four workpiece loading mechanisms are arranged on the rotary frame. The workpiece loading mechanism comprises a vibrating frame slidingly connected to the rotating frame, a turnover frame rotatingly connected to the vibrating frame, a vibration generating assembly arranged between the vibrating frame and the rotating frame and used to drive the vibrating frame to vertically vibrate, a mandrel and a driving clamp table rotatingly connected to the turnover frame, a clamp seat slidingly connected to the turnover frame and having a clamping spring arranged therebetween, a temperature control clamp table rotatingly connected to the clamp seat, and dust suppression nozzles uniformly arranged on the bottom surface of the driving clamp table and used to clamp the oral liquid to be inspected between the driving clamp table and the temperature control clamp table. The device further comprises a driving mechanism used to drive the oral liquid to be inspected to spin at the vibration and rotation station, the turnover station and the self-rotation station, drive the vibrating frame to vertically vibrate at the vibration and rotation station, and drive the turnover frame to rotate at the turnover station. Four CCD cameras are fixed to the frame and slidingly connected to brush seats at positions corresponding to the vibration and rotation station, the data end of the CCD camera is connected to the central control module, an electric push rod is arranged between the brush seat and the frame, and a high-pressure gas source pump is arranged on the frame and used to send gas to the dust suppression nozzles.

[0005] Based on the above technical solution, the present application can be further improved as follows.

[0006] As a preferred technical solution of the present application, the lower part of the frame is provided with a central control module and a first motor, the bottom surface of the rotating frame is provided with a rotating shaft at the center position, the output shaft of the first motor is drivingly connected with a first transmission belt, and the first transmission belt is drivingly connected with the rotating shaft.

[0007] As a preferred technical solution of the present application, the four CCD cameras are arranged at positions between the clamping station and the vibration and rotation station, between the vibration and rotation station and the turnover station, between the turnover station and the self-rotation station, and directly opposite the self-rotation station, the detection end of the CCD camera is provided with a light supplementing lamp, and the axis of the CCD camera is perpendicular to the axis of the oral liquid to be inspected.

[0008] As a preferred technical solution of the present application, the workpiece loading mechanism further comprises a lower tooth shaft, a fixed shaft and an upper tooth shaft rotatingly connected to the rotating frame, a second transmission belt drivingly connected between the lower tooth shaft and the fixed shaft, an active shaft rotatingly connected to the vibrating frame, a spline hole with an open bottom end and slidingly connected with the fixed shaft arranged on the active shaft, a lower gear wheel arranged on the lower tooth shaft, a first bevel gear wheel arranged on the active shaft and the turnover frame, the two first bevel gear wheels being orthogonal and meshing, an elastic transmission belt drivingly connected between the upper tooth shaft and the mandrel, a passive bevel gear wheel arranged on the upper tooth shaft, a belt shaft rotatingly connected to the turnover frame, a second bevel gear wheel arranged on the belt shaft and the mandrel, the two second bevel gear wheels being orthogonal and meshing, and a third transmission belt drivingly connected between the belt shaft and the driving clamp table.

[0009] As the preferred technical scheme of the present application, the spline hole and the fixing shaft are both in the shape of regular hexagon, and the elastic transmission belt is made of rubber and can elastically compensate the vibration stroke of the vibration frame when the vibration frame is vibrating.

[0010] As the preferred technical scheme of the present application, the vibration generating assembly comprises a rotating wheel and a middle gear shaft which are both rotatably connected to the rotary frame, the rotating wheel and the middle gear shaft are both provided with a third bevel gear, the two third bevel gears are orthogonally engaged, and in the circumferential direction, the rotating wheel is alternately provided with three transmission gear segments and three gearless empty segments, the vibration frame is provided with a tooth surface, the three transmission gear segments are alternately connected to the tooth surface in engagement, and the three transmission gear segments have different driving strokes on the vibration frame, the middle gear shaft is provided with an intermediate gear, and a back-and-forth spring is installed between the vibration frame and the rotary frame.

[0011] As the preferred technical scheme of the present application, the driving mechanism comprises a sleeve which is rotatably sleeved on the rotary shaft, the bottom of the frame is provided with a second motor, the output shaft of the second motor is drivingly connected with a third transmission belt, the third transmission belt is drivingly connected with the sleeve, the sleeve is provided with a transmission gear ring, the frame is rotatably connected with a power shaft at positions corresponding to the vibration and rotation station, the turnover station and the self-rotation station, the three power shafts are all provided with a power gear which is engaged with the transmission gear ring, the power shafts in the vibration and rotation station and the self-rotation station are both provided with a transmission bevel gear which is adaptively engaged with the passive bevel gear, the power shaft in the vibration and rotation station is further provided with a vibration gear which is engaged with the intermediate gear, and the power shaft in the turnover station is provided with a turnover gear which is engaged with the lower gear.

[0012] As the preferred technical scheme of the present application, the air inlet port of the high-pressure gas source pump is provided with a filter, the rotary frame is provided with a gas guide chamber, the air outlet port of the high-pressure gas source pump is in rotatable communication with the gas guide chamber through a pipeline, the core shaft and the rotary frame are both provided with a flow channel, the two flow channels are in communication with each other, the flow channel on the core shaft is in communication with the gas guide chamber through a corrugated metal pipe, and the active clamping table is provided with a gas injection cavity, and the flow channel on the rotary frame and the dust suppression injection hole are both in communication with the gas injection cavity.

[0013] As the preferred technical scheme of the present application, the temperature control clamping table is provided with an electric heating wire, and the surface of the cleaning and brushing seat is uniformly provided with nylon brush hairs.

[0014] The present application has the following advantages: 1. In view of the single amplitude uniform vibration of the existing device, which cannot take into account the problem of breaking the adhesion of foreign matter and avoiding bubble interference, and the easy deposition of foreign matter leading to missed detection, the present application optimizes the foreign matter suspension and detection coverage effect through the deep cooperation of the vibration generating assembly and the spinning action. The runner of the vibration generating assembly is designed with three driving stroke different transmission gear segments. During operation, they are alternately engaged with the vibration frame tooth surface to form non-uniform variable amplitude vibration. The 1mm small amplitude accurately breaks the adhesion between the small foreign matter and the liquid, the 1.5mm medium amplitude promotes the migration of foreign matter to the middle of the liquid to separate from the bottle wall and the bottle bottom, and the 2mm large amplitude avoids the secondary deposition of foreign matter. The synchronous vibration spring ensures the timeliness of vibration reset. The above design solves the contradiction between the small amplitude suspension and the large amplitude bubble of the existing device. At the same time, the elastic transmission belt made of rubber material can compensate the vertical stroke of the vibration frame to ensure the stable spinning of the driven clamp table driven by the mandrel, so that the oral liquid to be detected is exposed to the field of view of the CCD camera without dead angle, avoiding local omission of fixed angle detection. Compared with the existing single amplitude vibration and fixed posture of the oral liquid to be detected, the cooperative scheme improves the suspension rate of small foreign matter in the liquid and reduces the amount of bubbles produced. From the aspects of vibration principle and detection coverage, the root cause of missed detection caused by unreasonable vibration mode is reduced, and the detection accuracy is significantly better than that of the traditional structure.

[0015] 2. In view of the existing device, the oral liquid to be detected remains in a fixed upright posture, the upper and lower parts of the liquid have poor flowability, the sealing debris inside the bottle cap and the sediment impurities at the bottom of the bottle form a detection blind area. The present application realizes full detection of the oral liquid to be detected without dead angle through the flip and stable detection linkage of the flip station. The flip frame drives the oral liquid to be detected to complete the complete flip action of standing, bottle opening downward, bottle bottom downward and standing. When the bottle opening is downward, the liquid impacts the inside of the bottle cap under the action of gravity, forcing the attached sealing debris to be washed away. When the bottle bottom is downward, the liquid washes the sediment impurities at the bottom of the bottle, solving the technical problem that the upper and lower parts of the foreign matter cannot be disturbed under the traditional upright posture. At the same time, the mandrel continuously spins the driven clamp table through the shaft drive during the flip process, maintaining the suspension state of the foreign matter in the liquid, avoiding the reattachment of foreign matter to the bottle wall caused by the flip action. After the flip stops, a 10s stable waiting period is set, and the CCD detection is started after the liquid turbulence subsides to prevent image blur caused by flowing liquid. This design expands the exposure range of foreign matter from the middle to the upper and lower parts of the oral liquid to be detected, significantly improves the identification rate of blind area foreign matter compared with the existing fixed posture detection, fills the industry technical blank of missed detection of upper and lower impurities of oral liquid, and solves the problem that vibration only acts on the middle part and blind area foreign matter cannot be detected.

[0016] 3. Addressing the issues of excessive or insufficient cleanliness caused by fixed pressure and stroke in existing cleaning mechanisms, this invention optimizes the cleaning process through a closed-loop linkage of initial contamination detection, dynamic cleaning, and simultaneous anti-contamination. This eliminates interference from bottle wall impurities in the detection process. A CCD camera between the clamping and vibrating stations first acquires an initial image of the oral liquid to be inspected. A visual algorithm calculates the surface contamination level. When the contamination level > 5%, the electric actuator drives the cleaning brush seat to extend to its maximum stroke, and the cleaning pressure is set to 0.3 MPa to enhance removal. When the contamination level < 1%, the cleaning brush seat shortens to its minimum stroke, and the cleaning pressure drops to 0.1 MPa to prevent bottle contamination. This closed-loop design addresses the poor adaptability of traditional fixed cleaning methods by eliminating wall damage. Simultaneously, the vibrating and rotating station performs cleaning, vibration, and dust suppression in tandem. Nylon bristles directly remove surface impurities, variable amplitude vibration loosens residual impurities in crevices, and rotation ensures 360° cleaning without blind spots. A high-pressure air pump continuously blows clean air through dust suppression nozzles to prevent secondary adhesion of external dust during cleaning. Compared to the existing step-by-step operation of cleaning first and then testing, this closed-loop design reduces the residual rate of impurities on the bottle wall, effectively avoiding secondary contamination between cleaning and testing, reducing the possibility of bottle wall impurities being misidentified as foreign matter in the liquid, and further improving testing accuracy. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a light detection device for oral liquids; Figure 2 A schematic diagram of the rotating frame and high-pressure air source pump; Figure 3 for Figure 2 A magnified schematic diagram of the partial structure at point A in the middle; Figure 4 A schematic diagram of the oral liquid to be tested and the temperature control clamp; Figure 5 for Figure 4 A magnified schematic diagram of the local structure at point B; Figure 6 A schematic diagram of the cross-sectional structure of the dust suppression spray nozzles and the power shaft; Figure 7 for Figure 6 A magnified schematic diagram of the local structure at point C; Figure 8 for Figure 6 A magnified schematic diagram of the local structure at point D; Figure 9 This is a schematic diagram of the rotating wheel.

[0018] The attached diagram lists the components represented by each number as follows: 1. Frame; 2. Rotary frame; 3. Vibrating frame; 4. Tilting frame; 5. Mandrel; 6. Active clamping platform; 7. Clamping spring; 8. Temperature-controlled clamping platform; 9. Clamping seat; 10. Dust suppression spray nozzle; 11. Oral liquid to be tested; 12. CCD camera; 13. Cleaning brush holder; 14. Central control module; 15. Electric actuator; 16. High-pressure air source pump; 17. First motor; 18. Lower gear shaft; 19. Fixed shaft; 20. Upper gear shaft; 21. Movable shaft; 22. Lower gear 23. Wheel; 24. Elastic transmission belt; 25. Belt shaft; 26. Rotary wheel; 27. Middle gear shaft; 28. Transmission gear segment; 29. ​​Tooth surface; 30. Intermediate gear; 31. Rebound spring; 32. Sleeve; 33. Second motor; 34. Transmission gear ring; 35. Power shaft; 36. Power gear; 37. Transmission bevel gear; 38. Vibrating gear; 39. Reversing gear; 40. Air guide chamber; 41. Flow channel; 42. Gas injection chamber; 43. Passive bevel gear. Detailed Implementation

[0019] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0020] The present invention provides the following preferred embodiments, such as Figures 1-9 As shown, a light inspection device for oral liquid includes a frame 1, on which a clamping station, a vibrating station, a flipping station and a spinning station are arranged in sequence along the counterclockwise direction. It also includes a rotary frame 2, on which four workpiece loading mechanisms are provided. The lower part of the frame 1 is equipped with a central control module 14 and a first motor 17. The bottom axis of the rotary frame 2 is equipped with a rotary shaft. The output shaft of the first motor 17 is connected to a first transmission belt, which is connected to the rotary shaft. During operation, the first motor 17 drives the rotary frame 2 to rotate intermittently by 45° at a set interval period; After the first motor 17 starts, it transmits power to the rotary shaft on the bottom surface of the rotary frame 2 through the first transmission belt, driving the rotary frame 2 to rotate at a set interval period, so that the four workpiece load mechanisms on the rotary frame 2 can switch in an orderly manner between the clamping station, the vibrating station, the flipping station, the self-spinning station, and the vision inspection station of the four CCD cameras 12. The central control module 14 can adjust the speed and intermittent time of the first motor 17 in real time; In a preferred embodiment, the intermittent dwell period of each station is 30s, including 20s of action time and 10s of stability detection time; The precise intermittent rotation design ensures that each workpiece load mechanism has a stable dwell time at the corresponding station, avoiding positional shifts during station switching that could lead to clamping misalignment and inaccurate detection. The workpiece loading mechanism includes a vibrating frame 3 slidably connected to the rotary frame 2 and a tilting frame 4 rotatably connected to the vibrating frame 3. A vibration generating component for driving the vibrating frame 3 to vibrate vertically is provided between the vibrating frame 3 and the rotary frame 2. The vibration generating assembly includes a rotating wheel 25 and a central gear shaft 26 rotatably connected to the rotating frame 2. Both the rotating wheel 25 and the central gear shaft 26 are equipped with third bevel gears. The two third bevel gears mesh orthogonally. Along the circumferential direction, the rotating wheel 25 is alternately provided with three transmission tooth segments 27 and three toothless empty segments. The vibration frame 3 is provided with toothed surfaces 28. The three transmission tooth segments 27 are alternately meshed with the toothed surfaces 28, and the driving strokes of the three transmission tooth segments 27 on the vibration frame 3 are different. An intermediate gear 29 is installed on the central gear shaft 26. A return spring 30 is installed between the vibration frame 3 and the rotating frame 2. The drive mechanism drives the central gear shaft 26 to rotate, and transmits power to the rotating wheel 25 through two orthogonally meshing third bevel gears. When the rotating wheel 25 rotates, the three transmission tooth segments 27 that are alternately distributed on its circumference mesh with the tooth surface 28 of the vibration frame 3 in sequence, pushing the vibration frame 3 to move vertically along the rotating frame 2. When the rotating wheel 25 rotates to the toothless empty section, the vibration frame 3 is reset under the elastic force of the return spring 30, forming a cyclic and variable stroke vertical vibration. The differentiated drive stroke of the three transmission tooth segments 27 can realize non-uniform speed and variable amplitude vibration of the vibrating frame 3. Compared with uniform speed vibration of a single amplitude, it can more efficiently shake off small foreign objects such as fibers and glass shards adhering to the liquid, while avoiding excessive disturbance that leads to the generation of a large number of bubbles. The return spring 30 ensures the stability of vibration and timely reset, providing an ideal foreign object suspension state for subsequent stable detection at the vibrating station and reducing the detection blind zone. The flipping frame 4 is rotatably connected to the spindle 5 and the active clamping platform 6. The flipping frame 4 is slidably connected to the clamping seat 9, and a clamping spring 7 is provided between the two. The clamping seat 9 is rotatably connected to the temperature control clamping platform 8, which has a built-in heating wire. The bottom surface of the active clamping platform 6 is evenly distributed with dust suppression spray holes 10. The oral liquid to be tested 11 is clamped between the active clamping platform 6 and the temperature control clamping platform 8. During operation, the dust suppression nozzle 10 continuously blows out clean air at high pressure, and the axis of the clean air is parallel to the axis of the oral liquid to be tested 11. By using a continuous high-pressure blowing system for cleaning air during testing, the adhesion rate of external dust on the outer surface of the oral liquid to be tested 11 is effectively reduced, thereby improving the visual inspection accuracy of the oral liquid to be tested 11 and reducing inspection errors. In a preferred embodiment, the operating temperature of the temperature control clamp 8 is maintained at 24°C during operation; After the oral liquid to be tested 11 is placed between the active clamping platform 6 and the temperature-controlled clamping platform 8, the clamping seat 9, under the elastic force of the clamping spring 7, drives the temperature-controlled clamping platform 8 to move closer to the active clamping platform 6, thereby achieving elastic clamping of the oral liquid. The elastic clamping design of the clamping spring 7 can ensure that the oral liquid does not loosen during flipping, vibration and spinning, and can also avoid damage to the oral liquid 11 to be tested caused by rigid clamping. When the liquid medicine is prone to condensation due to low temperature, the heating wire built into the temperature control clamp 8 can be energized to heat the liquid medicine to maintain its fluidity. The temperature-controlled clamping platform 8 solves the problem of poor fluidity of viscous liquids and difficulty in suspending foreign objects in low-temperature environments, thus expanding the applicable scenarios of the equipment. The workpiece load mechanism also includes a lower gear shaft 18, a fixed shaft 19 and an upper gear shaft 20 rotatably connected to the rotary frame 2. A second transmission belt is connected between the lower gear shaft 18 and the fixed shaft 19. A movable shaft 21 is rotatably connected to the vibration frame 3. The movable shaft 21 has a spline hole with a bottom opening and sliding connection with the fixed shaft 19. Both the spline hole and the cross-section of the fixed shaft 19 are regular hexagons; A lower gear 22 is installed on the lower gear shaft 18, and a first bevel gear is installed on the movable shaft 21 and the tilting frame 4. The two first bevel gears mesh orthogonally, and an elastic transmission belt 23 is used to drive the upper gear shaft 20 and the spindle 5. The elastic transmission belt 23 is made of rubber and provides elastic compensation for the vibration stroke of the vibrating frame 3 when it vibrates. A driven bevel gear 42 is mounted on the upper gear shaft 20, and a belt shaft 24 is rotatably connected to the tilting frame 4. A second bevel gear is mounted on both the belt shaft 24 and the spindle 5. The two second bevel gears mesh orthogonally. A third transmission belt is connected between the belt shaft 24 and the driving clamp 6. The drive mechanism drives the lower gear shaft 18 to rotate, which in turn drives the fixed shaft 19 to rotate via the second transmission belt. The fixed shaft 19 engages with the regular hexagonal spline hole of the movable shaft 21, and the movable shaft 21 drives the tilting frame 4 to rotate via two orthogonally meshing first bevel gears. At the same time, the upper gear shaft 20 drives the spindle 5 to rotate through the elastic transmission belt 23, the spindle 5 drives the belt shaft 24 to rotate through the second bevel gear, and the belt shaft 24 drives the active clamping platform 6 to rotate through the third transmission belt, so as to realize the self-spinning of the oral liquid to be tested 11. The regular hexagonal spline hole ensures stable power transmission even when the fixed shaft 19 and the movable shaft 21 slide relative to each other, avoiding the torque interruption problem of traditional sliding connections; The elastic transmission belt 23 made of rubber can elastically compensate for the vibration stroke when the vibrating frame 3 vibrates, prevent the elastic transmission belt 23 from changing tension or breaking, and ensure transmission stability. It also includes a drive mechanism that drives the oral liquid to be tested 11 to spin at the vibrating station, the flipping station and the self-spinning station, drives the vibrating frame 3 to vibrate vertically at the vibrating station, and drives the flipping frame 4 to rotate at the flipping station. Four CCD cameras 12 are fixedly mounted on the frame 1 and a cleaning brush seat 13 is slidably connected to the corresponding vibrating station. The data terminals of the CCD cameras 12 are connected to the central control module 14. An electric push rod 15 is installed between the cleaning brush seat 13 and the frame 1. Nylon bristles are evenly distributed on the surface of the cleaning brush seat 13. A high-pressure air source pump 16 is provided on the frame 1 to deliver air to the dust suppression spray hole 10.

[0021] Four CCD cameras 12 are respectively positioned between the clamping station and the vibrating and rotating station, between the vibrating and rotating station and the flipping station, between the flipping station and the spin station, and directly opposite the spin station. The detection end of the CCD camera 12 is equipped with a supplementary light, and the axis of the CCD camera 12 is perpendicular to the axis of the oral liquid to be tested 11.

[0022] The installation height of the four CCD cameras 12 is at the same level as the horizontal centerline of the oral liquid to be tested 11; The CCD camera 12 has a resolution of 2048×2048 pixels, a frame rate of 30fps, and a white LED light for illumination. In the initial state after the oral liquid to be tested 11 is clamped, its bottle mouth is vertically upward and remains stationary. During the 20s action time of the rotating frame 2, the oral liquid to be tested 11 returns to the state where the bottle mouth is vertically upward and remains stationary. When facing the clamping station, vibrating station, or flipping station, the CCD camera 12 does not perform inspection operations. An industrial robotic arm with gripping claws is installed at the clamping station. The robotic arm is connected to the central control module 14. After the central control module 14 determines that the previous station has been completed, the robotic arm accurately places the oral liquid to be inspected 11 between the active clamping table 6 and the temperature control clamping table 8 of the workpiece load mechanism. After the inspection is completed, qualified and unqualified products are sorted and transferred to the corresponding material boxes to realize automatic loading and unloading. After the central control module 14 determines that the oral liquid to be inspected 11 is a non-conforming product, it sends a signal to the industrial robotic arm at the clamping station. The robotic arm transfers the non-conforming product to the non-conforming product bin and records the non-conforming type such as foreign objects or bottle wall defects, so as to realize the classification and traceability of non-conforming products. The CCD camera 12 between the clamping station and the vibrating station is used to acquire the initial image of the oral liquid to be tested 11, and to calculate the surface dirtiness of the oral liquid to be tested 11 through a visual algorithm. The cleaning brush seat 13 is controlled to control the cleaning intensity of the oral liquid to be tested 11 through dirtiness pre-identification. The CCD camera 12 between the vibrating station and the flipping station is used to perform a secondary visual inspection of the oral liquid 11 after the vibrating station stops. The CCD camera 12 between the flipping station and the spinning station is used to perform three visual inspections on the oral liquid to be inspected 11 after the flipping stops. At the spin station, the oral liquid to be tested 11 rotates at a uniform speed, and the CCD camera 12 at the spin station performs real-time imaging and detection when the oral liquid to be tested 11 spins. In terms of the working process, the second motor 32 drives the sleeve 31 to rotate through the third transmission belt, and the transmission gear ring 33 on the sleeve 31 drives the power shaft 34 of the vibrating station, the turning station, and the self-spinning station to rotate. The power shaft 34 of the vibrating station drives the oral liquid to be tested 11 to rotate through the transmission bevel gear 36, and at the same time drives the vibrating frame 3 to vibrate through the vibration gear 37. The power shaft 34 of the tilting station drives the tilting frame 4 to tilt via the tilting gear 38; The self-rotating power shaft 34 drives the oral liquid to continuously rotate via the transmission bevel gear 36; Each workstation's power shaft 34 is driven on demand only when the corresponding workpiece load mechanism arrives, through gear meshing, avoiding energy consumption during idling, while ensuring the synchronization and accuracy of each workstation's actions; When the oral liquid reaches the corresponding detection position and the movement is stable, the fill light of the CCD camera 12 is turned on to improve the grayscale contrast of the image. The CCD camera 12 captures the image and transmits it to the central control module 14. At the vibrating station, the cleaning brush seat 13 contacts the oral liquid to be tested 11 under a set pressure. Through the vibrating rotation of the cleaning brush and the oral liquid to be tested 11, the bottle wall of the oral liquid to be tested 11 is quickly cleaned, and the impact of impurities and dust residue on the bottle wall on the test results is reduced. The drive mechanism includes a sleeve 31 that is rotatably sleeved on a rotating shaft, a second motor 32 installed at the bottom of the frame 1, a third transmission belt that is driven to the output shaft of the second motor 32, and the third transmission belt is driven to the sleeve 31. Both the first motor 17 and the second motor 32 are integrated with encoders that are connected to the central control module 14 for data transmission. The central control module 14 is an industrial controller with a data storage unit, an image analysis unit, and a timing control unit. It is used to receive image data from the CCD camera 12 and perform foreign object identification and analysis, while controlling the start and stop timing of the first motor 17, the second motor 32, the electric actuator 15, and the high-pressure air source pump 16. A transmission gear ring 33 is installed on the sleeve 31. A power shaft 34 is rotatably connected to the frame 1 at the positions corresponding to the vibrating station, the flipping station and the self-spinning station. A power gear 35 that meshes with the transmission gear ring 33 is installed on each of the three power shafts 34. Both the vibrating and spinning stations have transmission bevel gears 36 that mesh with the passive bevel gear 42 installed on the power shaft 34. When the driven bevel gear 42 rotates to the position facing the vibrating and spinning positions, it meshes with the transmission bevel gear 36. The power shaft 34 in the vibratory rotating station is also equipped with a vibratory gear 37 that meshes with the intermediate gear 29, and the power shaft 34 in the flipping station is equipped with a flipping gear 38 that meshes with the lower gear 22.

[0023] A filter is installed at the air inlet of the high-pressure air source pump 16. An air guide chamber 39 is provided on the rotating frame 2. The air outlet of the high-pressure air source pump 16 is rotatably connected to the air guide chamber 39 through a pipeline. A flow channel 40 is provided on both the spindle 5 and the tilting frame 4. The two flow channels 40 are connected to each other. The flow channel 40 on the spindle 5 is connected to the air guide chamber 39 through a corrugated metal pipe. A gas injection chamber 41 is provided in the active clamping platform 6. The flow channel 40 and the dust suppression spray hole 10 on the tilting frame 4 are both connected to the gas injection chamber 41.

[0024] The high-pressure air source pump 16 draws in air from the air inlet port with a filter. The compressed high-pressure gas is transported through the pipeline to the air guide chamber 39 of the rotary frame 2. The air guide chamber 39 transports the gas to the flow channel 40 of the spindle 5 through the corrugated metal pipe, and then enters the gas injection chamber 41 of the active clamping platform 6 through the flow channel 40 of the tilting frame 4, and finally sprays it out from the dust suppression spray hole 10. The filter prevents impurities in the high-pressure gas from adhering to the bottle wall or entering the liquid, which could lead to misjudgment. The flexible connection of the corrugated metal tube solves the air passage sealing problem when the spindle 5 moves, preventing gas leakage from affecting the dust suppression effect.

[0025] The specific steps for using this invention are as follows: An industrial robotic arm is installed at the clamping station to realize automatic feeding of the oral liquid to be tested 11 and automatic unloading of the oral liquid to be tested 11 after testing. The CCD camera 12 between the clamping station and the vibrating station is used to collect the initial image of the oral liquid to be tested 11 and calculate the surface dirt degree of the oral liquid to be tested 11 through a visual algorithm. The dirt degree is pre-identified to control the stroke of the electric push rod 15 and the cleaning force of the cleaning brush seat 13 on the oral liquid to be tested 11. At the vibrating station, the cleaning brush seat 13 contacts the oral liquid to be tested 11 under a set pressure. Through the vibrating rotation of the cleaning brush and the oral liquid to be tested 11, the bottle wall of the oral liquid to be tested 11 is quickly cleaned, and the impact of impurities and dust residue on the bottle wall on the test results is reduced. The CCD camera 12 between the vibrating station and the flipping station is used to perform a second visual inspection of the oral liquid 11 after it stops vibrating and has a 10-second stabilization waiting period. The CCD camera 12 between the flipping station and the spinning station is used to perform three visual inspections on the oral liquid 11 to be inspected after it stops flipping and after a 10-second stabilization waiting period. On the spin station, the oral liquid to be tested 11 rotates at a constant speed. The CCD camera 12 on the spin station performs real-time online detection of the oral liquid to be tested 11 while it is spinning. Traditional light inspection devices often use fixed pressure or fixed stroke cleaning mechanisms, which can easily lead to two problems: over-cleaning when the bottle wall is lightly soiled, and insufficient cleaning when the soiling is heavy. In this process, the initial detection and vision algorithm of the CCD camera 12 between the clamping station and the vibrating station can calculate the surface contamination of the oral liquid to be inspected in real time and dynamically control the stroke of the electric push rod 15. When the soiling level is greater than 5%, the electric actuator 15 extends to its maximum stroke, and the cleaning pressure is set to 0.3 MPa to enhance cleaning. When the contamination level is less than 1%, the electric actuator 15 is shortened to its minimum stroke, and the cleaning pressure is set to 0.1 MPa to avoid damage to the bottle wall. This intelligent adaptive cleaning mode improves the cleaning pass rate while reducing the wear and tear on the brush holder 13. Traditional light inspection often involves a step-by-step process of cleaning followed by vibration inspection. After cleaning, dust from the air can easily re-adhere to the bottle wall, rendering the cleaning ineffective. In this process, the cleaning and vibrating rotation at the vibrating station are carried out simultaneously, forming a closed loop of physical cleaning, vibration removal, and real-time contamination prevention. The bristles of the cleaning brush seat 13 directly brush away impurities on the bottle wall surface, while the variable amplitude vibration of the vibrating frame 3 loosens the residual impurities in the gaps of the bottle wall, and the self-rotation action allows the oral liquid to be tested 11 to achieve 360° cleaning without dead angles. In addition, the high-pressure air pump 16 continuously blows clean air through the dust suppression nozzle 10 to prevent external dust from adhering again during the cleaning process. This collaborative design reduces the residual rate of impurities on the bottle wall, clears the bottle wall from interference for subsequent detection of foreign matter in the medicine, and reduces the false judgment rate. The vibration and spin of the vibratory-rotating station are used to achieve the initial suspension and blind-angle detection of tiny foreign objects in the liquid medicine. The core of the vibratory-rotating system is the variable amplitude vibration to break up the adhesion of foreign objects. The vibratory rotary station achieves non-uniform variable amplitude vibration through the differentiated drive strokes of three transmission tooth segments 27: In a preferred embodiment, the driving strokes of the three transmission tooth segments 27 are 1mm, 1.5mm and 2mm respectively, by using different center angles and number of teeth corresponding to the three transmission tooth segments 27. A small amplitude of 1mm breaks the adhesion between foreign objects and the liquid medicine; a medium amplitude of 1.5mm pushes the foreign objects to suspend in the middle of the liquid medicine; a large amplitude of 2mm prevents the foreign objects from sinking to the bottom again; and a return spring 30 ensures timely vibration reset and prevents the amplitude from getting out of control. This design increases the suspension rate of small foreign objects and reduces the amount of bubbles generated. The flipping station is used to eliminate the blind spots at the top and bottom of the oral liquid 11 to be inspected, enabling secondary inspection of foreign objects. The core of the flipping and rotating mechanism is to flip and cover the top and bottom areas of the oral liquid 11 to be inspected, while maintaining the suspension of foreign objects by the rotation, thus solving the problem of missed detection of foreign objects at the top and bottom of the oral liquid 11 in the vibrating and rotating station. The flipping action washes away foreign matter attached to the upper and lower blind areas of the oral liquid to be tested 11. The vibration of the vibrating station mainly acts on the middle part of the oral liquid to be tested 11, while the upper and lower parts of the oral liquid to be tested 11 are not subjected to sufficient vibration impact force due to gravity, which easily leads to the attachment of foreign matter. The flipping station drives the oral liquid to be tested 11 to flip through the flipping frame 4, so that the liquid washes the upper and lower parts of the oral liquid to be tested 11 under the action of gravity. When the bottle opening is facing down, the liquid impacts the inside of the bottle cap, dislodging sealing debris. When the bottle is upside down, the liquid impacts the bottom of the bottle, washing away any deposited impurities. The design covers the upper and lower blind areas that the vibrating station cannot reach, and the foreign object exposure range extends from the middle of the oral liquid to be tested 11 to the entire oral liquid to be tested 11; After the flipping stops, a 10-second stabilization waiting period is set to allow the turbulence of the liquid to subside. Then, three inspections are performed using the CCD camera 12 to avoid image blurring caused by the flowing liquid and improve the foreign object recognition rate during re-inspection.

[0026] The spin station is used to achieve final inspection and ensure no omissions. The core of the spin is uniform motion to stabilize the image and full-angle scanning. As the last inspection checkpoint, it solves the problem of missing low-speed suspended foreign objects in the first two stations. When the spin station is in operation, the rotation speed of the oral liquid to be tested 11 is set to 12 r / min. A uniform spin of 12 r / min is used to stabilize the image and improve the accuracy of identifying small foreign objects. After the vibration and tumbling, the foreign objects in the liquid are fully suspended, but some low-density foreign objects will move in a low-speed suspended state. If variable speed spin is used, it will cause motion blur in CCD imaging, making it difficult to identify; The uniform spin of the spin station ensures that the movement speed of each point of the oral liquid to be tested is constant, there is no ghosting when the CCD is in real time, and the visual algorithm can accurately capture the shape of low-speed suspended foreign objects, avoiding missed detection due to image blur. The above process forms a multi-level detection closed loop, reducing the false negative rate. The CCD camera 12 of the spin station is facing the oral liquid to be tested 11, and with the constant illumination of the supplementary light, it realizes 360° full-angle scanning to finally confirm the edge foreign objects that may be missed in the vibration and tumbling detection. Meanwhile, the high-pressure air source pump 16 continuously suppresses dust, and the temperature control clamp 8 maintains the fluidity of the medicine at 24°C. The three work together to provide the optimal environment for the final inspection, which includes clean bottle walls, flowing medicine, and stable foreign matter. This effectively reduces the overall missed detection rate in the final inspection process.

[0027] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A light inspection device for oral liquids, comprising a frame (1) having a clamping station, a vibrating station, a flipping station, and a spinning station arranged sequentially along a counterclockwise direction, characterized in that, It also includes a rotary frame (2), on which four workpiece loading mechanisms are provided; The workpiece loading mechanism includes a vibrating frame (3) slidably connected to the rotary frame (2) and a flipping frame (4) rotatably connected to the vibrating frame (3). A vibration generating component for driving the vibrating frame (3) to vibrate vertically is provided between the vibrating frame (3) and the rotary frame (2). A spindle (5) and an active clamping platform (6) are rotatably connected on the flipping frame (4). A clamping seat (9) is slidably connected on the flipping frame (4), and a clamping spring (7) is provided between the two. A temperature-controlled clamping platform (8) is rotatably connected on the clamping seat (9). Dust suppression spray holes (10) are evenly distributed on the bottom surface of the active clamping platform (6). The oral liquid to be tested (11) is clamped between the active clamping platform (6) and the temperature-controlled clamping platform (8). It also includes a drive mechanism that drives the oral liquid to be tested (11) to spin at the vibrating station, the flipping station and the self-spinning station, drives the vibrating frame (3) to vibrate vertically at the vibrating station, and drives the flipping frame (4) to rotate at the flipping station. Four CCD cameras (12) are fixed on the frame (1) and a cleaning brush seat (13) is slidably connected to the corresponding vibrating station. The data terminal of the CCD camera (12) is connected to the central control module (14). An electric push rod (15) is installed between the cleaning brush seat (13) and the frame (1). A high-pressure air source pump (16) is provided on the frame (1) to deliver air to the dust suppression spray hole (10).

2. The lamp detection device for oral liquids according to claim 1, characterized in that, The lower part of the frame (1) is equipped with a central control module (14) and a first motor (17). A rotary shaft is installed at the bottom axis of the rotary frame (2). A first transmission belt is connected to the output shaft of the first motor (17). The first transmission belt is connected to the rotary shaft.

3. The lamp detection device for oral liquids according to claim 1, characterized in that, The four CCD cameras (12) are respectively positioned between the clamping station and the vibrating station, between the vibrating station and the flipping station, between the flipping station and the spin station, and opposite the spin station. The detection end of the CCD camera (12) is equipped with a supplementary light, and the axis of the CCD camera (12) is perpendicular to the axis of the oral liquid (11) to be tested.

4. The lamp detection device for oral liquids according to claim 1, characterized in that, The workpiece load mechanism further includes a lower gear shaft (18), a fixed shaft (19), and an upper gear shaft (20) rotatably connected to the rotary frame (2). A second transmission belt drives between the lower gear shaft (18) and the fixed shaft (19). A movable shaft (21) is rotatably connected to the vibration frame (3). The movable shaft (21) has a spline hole with an open bottom end and slidingly connected to the fixed shaft (19). A lower gear (22) is installed on the lower gear shaft (18). The movable shaft (21) and the tilting frame (20) are connected together. 4) Each of the two first bevel gears is installed on the upper gear shaft (20) and the spindle (5) is connected by an elastic transmission belt (23). A passive bevel gear (42) is installed on the upper gear shaft (20). A belt shaft (24) is rotatably connected to the tilting frame (4). A second bevel gear is installed on both the belt shaft (24) and the spindle (5). The two second bevel gears are connected by an orthogonal mesh. A third transmission belt is connected between the belt shaft (24) and the active clamp (6).

5. The lamp detection device for oral liquids according to claim 4, characterized in that, The cross-sections of the spline hole and the fixed shaft (19) are both regular hexagonal, and the elastic transmission belt (23) is made of rubber and provides elastic compensation for the vibration stroke of the vibration frame (3) when the vibration frame (3) vibrates.

6. The lamp detection device for oral liquids according to claim 5, characterized in that, The vibration generating assembly includes a rotating wheel (25) and a central gear shaft (26) rotatably connected to the rotating frame (2). Both the rotating wheel (25) and the central gear shaft (26) are equipped with third bevel gears. The two third bevel gears mesh orthogonally. Along the circumferential direction, the rotating wheel (25) is alternately provided with three transmission tooth segments (27) and three toothless empty segments. The vibration frame (3) is provided with toothed surfaces (28). The three transmission tooth segments (27) are alternately meshed with the toothed surfaces (28), and the driving strokes of the three transmission tooth segments (27) on the vibration frame (3) are different. An intermediate gear (29) is installed on the central gear shaft (26). A return spring (30) is installed between the vibration frame (3) and the rotating frame (2).

7. The lamp detection device for oral liquids according to claim 2, characterized in that, The driving mechanism includes a sleeve (31) rotatably mounted on a rotating shaft. A second motor (32) is installed at the bottom of the frame (1). A third transmission belt is driven to the output shaft of the second motor (32). The third transmission belt is driven to the sleeve (31). A transmission gear ring (33) is installed on the sleeve (31). A power shaft (34) is rotatably connected to the frame (1) at the positions corresponding to the vibrating station, the flipping station, and the self-spinning station. A power gear (35) meshing with the transmission gear ring (33) is installed on each of the three power shafts (34). A transmission bevel gear (36) meshing with the passive bevel gear (42) is installed on the power shaft (34) in the vibrating station and the self-spinning station. A vibration gear (37) meshing with the intermediate gear (29) is also installed on the power shaft (34) in the vibrating station. A flipping gear (38) meshing with the lower gear (22) is installed on the power shaft (34) in the flipping station.

8. The lamp detection device for oral liquids according to claim 1, characterized in that, The high-pressure air source pump (16) has a filter installed at its air inlet port. The rotating frame (2) has an air guide chamber (39). The air outlet of the high-pressure air source pump (16) is rotatably connected to the air guide chamber (39) through a pipeline. The spindle (5) and the tilting frame (4) both have flow channels (40). The two flow channels (40) are interconnected. The flow channel (40) on the spindle (5) is connected to the air guide chamber (39) through a corrugated metal pipe. The active clamping platform (6) has a gas injection chamber (41). The flow channel (40) and the dust suppression nozzle (10) on the tilting frame (4) are both connected to the gas injection chamber (41).

9. A lamp detection device for oral liquids according to claim 1, characterized in that, The temperature control clamp (8) has a built-in heating wire, and the surface of the cleaning brush seat (13) is evenly covered with nylon bristles.

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