Atomizer sealing performance detection table

Abstract

The invention discloses an atomizer sealing performance detection table, which comprises a machine base, a feeding mechanism, a rotary conveying mechanism, a detection mechanism and a discharging mechanism, and is characterized in that the feeding mechanism and the discharging mechanism are correspondingly connected to a feeding station and a discharging station of the rotary conveying mechanism respectively; the detection mechanism is cooperatively arranged on the top side of the rotary conveying mechanism and is connected to the base; the detection mechanism comprises a plurality of visual detection units and a plurality of air pressure detection units, and the visual detection units and the air pressure detection units are arranged between the feeding mechanism and the discharging mechanism; and the detection end of each visual detection unit and the detection end of each air pressure detection unit are arranged towards a mounting station on the top surface of the rotary conveying mechanism in a matched manner. The atomizer sealing performance detection table is based on the central layout of the rotary conveying mechanism, can effectively shorten the material flowing path, realizes linear transmission of feeding, detection and discharging, and can effectively reduce the takt time compared with a traditional linear production line.

Description

Technical Field

[0001] This invention relates to the field of testing station technology, and in particular to a nebulizer sealing performance testing station. Background Technology

[0002] The medical nebulizer sealing test bench is an automated quality inspection device specifically designed to verify whether nebulizer products (such as nozzles, reservoirs, interfaces, and other components) have gas or liquid leaks. Its core function is to ensure zero medication leakage and stable nebulization pressure during treatment, thereby guaranteeing accurate patient dosage and safety. Currently, the core testing principle for nebulizer sealing primarily employs the pressure attenuation method. This involves injecting a constant pressure of clean air (typically 20-50 kPa) into the nebulizer cavity and monitoring the pressure drop rate during the pressure holding phase (industry standard: ≤0.5 kPa / s is acceptable). Its physical essence is based on the ideal gas law P1V1=P2V2, where the pressure drop rate directly reflects the leakage amount. Simultaneously, auxiliary methods can be used to improve detection accuracy, such as acoustic resonance: using piezoelectric ceramics to excite cavity resonance and capture frequency shifts caused by cracks; and visual deformation analysis: using a high-speed camera to capture the deformation of the sealing ring under pressure.

[0003] However, existing atomizer sealing test stations have long cycle times and low testing efficiency during actual testing. In addition, visual inspection is easily interfered with and prone to errors during airtightness testing, resulting in a decrease in the accuracy of the test results. Summary of the Invention

[0004] Therefore, it is necessary to provide a nebulizer sealing test station to address the technical problems of insufficient efficiency and accuracy of existing medical nebulizer component sealing test stations.

[0005] A sealing performance testing platform for atomizers includes a base, a feeding mechanism, a rotary conveying mechanism, a testing mechanism, and a discharging mechanism. The feeding mechanism, rotary conveying mechanism, testing mechanism, and discharging mechanism are all installed on the base. The rotary conveying mechanism is located at the center of the top of the base. The output end of the feeding mechanism and the input end of the discharging mechanism are respectively connected to the feeding station and the discharging station of the rotary conveying mechanism. The testing mechanism is located on the top side of the rotary conveying mechanism and connected to the base, thus forming the basic structure of the testing platform.

[0006] The inspection mechanism includes several visual inspection units and several pneumatic inspection units. The visual inspection units and several pneumatic inspection units are arranged between the loading mechanism and the unloading mechanism along the rotational conveying direction of the rotary conveyor. The inspection end of each visual inspection unit and the inspection end of each pneumatic inspection unit are set to cooperate with the installation position on the top surface of the rotary conveyor to realize the inspection function of each position.

[0007] The atomizer sealing performance testing station of the present invention completes the atomizer sealing performance test through the following steps: S1. The atomizer to be tested is transported to the workstation through the feeding mechanism and the rotary conveyor mechanism; S2. The corresponding vision inspection unit performs visual positioning inspection on the workpiece: Step sequence (single cycle ≤ 0.5s), T1+0ms, the rotary conveyor positioning is completed; T1+50ms, the workpiece is fixed at the station; T1+150ms, the light source of the corresponding vision inspection unit lights up, with a brightness of 70%; T1+200ms, the vision inspection unit camera triggers shooting, with soft triggering and zoom positioning; T1+300ms, SIFT1 feature matching calculation; T1+450ms, the piezoelectric platform compensates for displacement X-axis +0.12mm, Y-axis -0.08mm, and the capacitive sensor confirms the error ≤ 0.2μm; T1+500ms, the workpiece is released at the station. S3, T2+0ms: The corresponding air pressure detection unit injects air into the workpiece; T2+100ms: Pressure is stabilized and maintained; T2+200ms: Pressure is acquired; T2+300ms: Workpiece airtightness analysis; T2+500ms: Workpiece is released from the workstation. S4. Result judgment: If the sealing is PASS + no leakage + appearance is OK, the unloading mechanism will unload the qualified product into the qualified product channel; if the sealing is FAIL, the unloading mechanism will unload the unsealed product into the NG frame; if visual inspection shows appearance damage, the unloading mechanism will move it into the rework area.

[0008] In one embodiment, the aforementioned visual inspection units and pneumatic inspection units are arranged alternately along the conveying direction of the rotary conveyor, so that the workpiece at the preset station can be positioned, inspected for appearance and inspected for air tightness by the adjacent visual inspection units and pneumatic inspection units in sequence.

[0009] In one embodiment, the aforementioned detection mechanism includes a three-vision detection unit and a three-pressure detection unit, wherein the three-vision detection unit and the three-pressure detection unit are staggered with each other at the workstations on the top surface of the rotating conveyor mechanism.

[0010] In one embodiment, based on the aforementioned placement of the loading and unloading mechanisms, eight stations are provided between the loading and unloading stations of the rotary conveyor mechanism.

[0011] In one embodiment, the aforementioned three-vision detection units and three-pneumatic detection units are arranged alternately in sequence, starting from the loading station of the rotary conveyor mechanism.

[0012] In one embodiment, the aforementioned testing mechanism further includes a defective product sorting unit, which is located adjacent to the unloading mechanism, and the gripping end of the defective product sorting unit corresponds to the adjacent station of the unloading end of the rotary conveyor mechanism, so as to sort defective products that fail the appearance and sealing tests.

[0013] In one embodiment, the above-mentioned detection mechanism further includes a material unloading detection unit, which is located adjacent to the defective product sorting unit to perform visual detection on the workpiece setting posture before unloading, so as to ensure the accuracy of the defective product sorting unit and the unloading mechanism in gripping the workpiece.

[0014] In one embodiment, the aforementioned visual inspection unit and air pressure detection unit can be integrated into one unit to achieve simultaneous appearance inspection and sealing inspection.

[0015] In one embodiment, the aforementioned vision inspection unit is equipped with an industrial camera and a ring-shaped LED light source, with the industrial camera positioned at the top of the vision inspection unit and the ring-shaped LED light source positioned at the bottom of the industrial camera.

[0016] In one embodiment, the air pressure detection unit is provided with a cylinder and a clamping structure. The cylinder is located at the top of the air pressure detection unit, and the clamping structure is located at the bottom of the air pressure detection unit corresponding to the detection station.

[0017] The aforementioned atomizer sealing test bench, based on the centrally located rotary conveyor mechanism, effectively shortens the material flow path, enabling linear transmission of loading, testing, and unloading. Compared to traditional linear production lines, this significantly reduces cycle time. The distributed arrangement of vision and air pressure detection units allows each unit to operate independently, avoiding detection interference, such as air pressure fluctuations affecting visual imaging and leading to misjudgments. Simultaneously, before entering the air pressure detection unit for airtightness testing, the workpiece can be simultaneously inspected for appearance and positioned by the vision detection unit. This improves the alignment accuracy between the air pressure detection unit and the workpiece, and the collaborative staggered testing significantly saves testing time, enhancing the efficiency of atomizer appearance and sealing testing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an atomizer sealing performance testing station in one embodiment; Figure 2 This is a partial structural schematic diagram of an atomizer sealing performance testing station in one embodiment; Figure 3 This is a partial structural schematic diagram of an atomizer sealing performance testing station in one embodiment. Detailed Implementation

[0019] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element 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 this invention.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0022] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0025] Please see Figures 1 to 3 This invention discloses an atomizer sealing performance testing station 1, which includes a base 10, a feeding mechanism 20, a rotary conveying mechanism 30, a testing mechanism 40, and a discharging mechanism 50. The feeding mechanism 20, the rotary conveying mechanism 30, the testing mechanism 40, and the discharging mechanism 50 are all installed on the base 10. The rotary conveying mechanism 30 is located at the center of the top of the base 10. The output end of the feeding mechanism 20 and the input end of the discharging mechanism 50 are respectively connected to the feeding station and the discharging station of the rotary conveying mechanism 30. The testing mechanism 40 is arranged on the top side of the rotary conveying mechanism 30 and connected to the base 10, thus forming the basic structure of the testing station. Specifically, the testing mechanism 40 includes several visual inspection units 41 and several air pressure inspection units 42, which are arranged between the loading mechanism 20 and the unloading mechanism 50 along the rotational conveying direction of the rotary conveying mechanism 30. The inspection end of each visual inspection unit 41 and the inspection end of each air pressure inspection unit 42 are aligned with the mounting position on the top surface of the rotary conveying mechanism 30 to realize the inspection function of each position. Based on the above configuration, the atomizer sealing test bench 1 of the present invention completes the atomizer sealing test through the following steps: S1. The atomizer to be tested is transported to the workstation through the feeding mechanism 20 and the rotary conveying mechanism 30; S2. The corresponding vision inspection unit 41 performs visual positioning inspection on the workpiece: Step sequence (single cycle ≤ 0.5s), T1+0ms, the rotary conveyor 30 completes positioning; T1+50ms, the workpiece is fixed at the station; T1+150ms, the light source of the corresponding vision inspection unit 41 turns on, with a brightness of 70%; T1+200ms, the camera of the vision inspection unit 41 triggers shooting, with soft triggering and zoom positioning; T1+300ms, SIFT1 feature matching calculation; T1+450ms, the piezoelectric platform compensates for displacement, X-axis +0.12mm, Y-axis -0.08mm, and the capacitive sensor confirms the error ≤ 0.2μm; T1+500ms, the workpiece is released at the station. S3, T2+0ms: The corresponding air pressure detection unit 42 injects air into the workpiece; T2+100ms: Pressure is stabilized and maintained; T2+200ms: Pressure is acquired; T2+300ms: Workpiece airtightness analysis; T2+500ms: Workpiece is released from the workstation. S4. Result judgment: If the sealing is PASS + no leakage + appearance is OK, the unloading mechanism 50 will unload the qualified product into the qualified product channel; if the sealing is FAIL, the unloading mechanism 50 will unload the unsealed product into the NG frame; if visual inspection shows appearance damage, the unloading mechanism 50 will move it into the rework area.

[0026] Based on the above scheme, the atomizer sealing test station 1 disclosed in this invention, with its centrally located rotary conveyor mechanism 30, can effectively shorten the material flow path and achieve linear transmission of loading, testing, and unloading, thus effectively reducing cycle time compared to traditional linear production lines. The distributed arrangement of the vision and air pressure detection units 42 allows each detection unit to operate independently, avoiding detection interference, such as air pressure fluctuations affecting visual imaging and causing misjudgments. At the same time, before entering the air pressure detection unit 42 for airtightness testing, the workpiece can be simultaneously inspected for appearance and positioned by the vision detection unit 41, thereby improving the matching accuracy between the air pressure detection unit 42 and the workpiece. Furthermore, the collaborative and staggered testing greatly saves testing time and improves the efficiency of atomizer appearance and sealing testing.

[0027] Furthermore, a number of visual inspection units 41 and a number of pneumatic inspection units 42 are arranged alternately along the conveying direction of the rotary conveyor 30, so that the workpiece at the preset station can be positioned, inspected for appearance and inspected for air tightness by the adjacent visual inspection units 41 and pneumatic inspection units 42 in sequence.

[0028] Specifically, in one embodiment, the detection mechanism 40 includes a three-vision detection unit 41 and a three-pressure detection unit 42, such that the three-vision detection unit 41 and the three-pressure detection unit 42 are staggered with each other at the workstations on the top surface of the rotary conveyor 30.

[0029] Furthermore, based on the placement positions of the feeding mechanism 20 and the unloading mechanism 50, eight stations are set between the feeding station and the unloading station of the rotary conveyor mechanism 30. Specifically, the three vision detection units 41 and the three air pressure detection units 42 are arranged sequentially and alternately, starting from the feeding station of the rotary conveyor mechanism 30.

[0030] Furthermore, the testing mechanism 40 also includes a defective product sorting unit 43, which is located on the adjacent side of the unloading mechanism 50. The gripping end of the defective product sorting unit 43 corresponds to the adjacent station of the unloading end of the rotary conveyor mechanism 30, so as to sort defective products that fail the appearance and sealing tests.

[0031] Furthermore, the inspection mechanism 40 also includes a material unloading inspection unit 44, which is located adjacent to the defective product sorting unit 43 to perform visual inspection on the workpiece setting posture before unloading, so as to ensure the accuracy of the workpiece clamping by the defective product sorting unit 43 and the unloading mechanism 50.

[0032] Furthermore, in one embodiment, the visual inspection unit 41 and the air pressure detection unit 42 can be integrated into one unit to achieve simultaneous appearance inspection and sealing inspection.

[0033] Furthermore, the vision inspection unit 41 is equipped with an industrial camera 411 and a ring LED light source 412. The industrial camera 411 is located at the top of the vision inspection unit 41, and the ring LED light source 412 is located at the bottom of the industrial camera 411. Thus, the ring LED light source 412 provides a light source of preset brightness to the workpiece so that the industrial camera 411 can perform visual inspection on the workpiece.

[0034] Furthermore, the air pressure detection unit 42 is equipped with a cylinder 421 and a clamping structure 422. The cylinder 421 is located at the top of the air pressure detection unit 42, and the clamping structure 422 is located at the bottom of the air pressure detection unit 42 corresponding to the detection station. Thus, the clamping structure 422 can clamp the workpiece in the detection station. Then, the cylinder 421 is connected to the atomizer workpiece to be tested through a pipe, so as to perform a sealing test on the workpiece through inflation and air pressure detection.

[0035] In summary, the atomizer sealing test station disclosed in this invention, based on the centrally located rotary conveyor mechanism, effectively shortens the material flow path and achieves linear transmission of loading, testing, and unloading, significantly reducing cycle time compared to traditional linear production lines. The distributed arrangement of vision and air pressure detection units allows each unit to operate independently, avoiding detection interference, such as air pressure fluctuations affecting visual imaging and leading to misjudgments. Simultaneously, before entering the air pressure detection unit for airtightness testing, the workpiece can be simultaneously inspected and positioned by the vision detection unit, thereby improving the alignment accuracy between the air pressure detection unit and the workpiece. Furthermore, the collaborative staggered testing significantly saves testing time and improves the efficiency of atomizer appearance and sealing testing.

[0036] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A sealing performance testing station for atomizers, characterized in that, include: The machine base, feeding mechanism, rotary conveying mechanism, detection mechanism, and unloading mechanism are all installed on the machine base. The rotary conveying mechanism is located at the center of the top of the machine base. The output end of the feeding mechanism and the input end of the unloading mechanism are respectively connected to the feeding station and the unloading station of the rotary conveying mechanism. The detection mechanism is located on the top side of the rotary conveying mechanism and connected to the machine base, thus forming the basic structure of the detection table. The inspection mechanism includes several visual inspection units and several pneumatic inspection units. The visual inspection units and several pneumatic inspection units are arranged between the loading mechanism and the unloading mechanism along the rotational conveying direction of the rotary conveyor. The inspection end of each visual inspection unit and the inspection end of each pneumatic inspection unit are set to cooperate with the installation position on the top surface of the rotary conveyor to realize the inspection function of each position. The atomizer sealing performance testing station of the present invention completes the atomizer sealing performance test through the following steps: S1. The atomizer to be tested is transported to the workstation through the feeding mechanism and the rotary conveyor mechanism; S2. The corresponding vision inspection unit performs visual positioning inspection on the workpiece: Step sequence (single cycle ≤ 0.5s), T1+0ms, the rotary conveyor positioning is completed; T1+50ms, the workpiece is fixed at the station; T1+150ms, the light source of the corresponding vision inspection unit lights up, with a brightness of 70%; T1+200ms, the vision inspection unit camera is triggered to capture images, with soft triggering and zoom positioning; T1+300ms, SIFT1 feature matching calculation; T1+450ms, the piezoelectric platform compensates for displacement, X-axis +0.12mm, Y-axis -0.08mm, and the capacitive sensor confirms the error ≤ 0.2μm; T1+500ms, the workpiece is released at the station. S3, T2+0ms: The corresponding air pressure detection unit injects air into the workpiece; T2+100ms: Pressure is stabilized and maintained; T2+200ms: Pressure is acquired; T2+300ms: Workpiece airtightness analysis; T2+500ms: Workpiece is released from the workstation. S4. Result judgment: If the sealing is PASS + no leakage + appearance is OK, the unloading mechanism will unload the qualified product into the qualified product channel; if the sealing is FAIL, the unloading mechanism will unload the unsealed product into the NG frame; if visual inspection shows appearance damage, the unloading mechanism will move it into the rework area.

2. The atomizer sealing performance testing station according to claim 1, characterized in that, Several visual inspection units and several pneumatic inspection units are arranged alternately along the conveying direction of the rotary conveyor, so that the workpieces at the preset workstations can be positioned, inspected for appearance and tested for air tightness by the adjacent visual inspection units and pneumatic inspection units in sequence.

3. The atomizer sealing performance testing station according to claim 2, characterized in that, The inspection mechanism includes a three-vision inspection unit and a three-pressure inspection unit, and the three-vision inspection unit and the three-pressure inspection unit are arranged alternately on the top surface of the rotating conveyor mechanism.

4. The atomizer sealing performance testing station according to claim 3, characterized in that, Based on the placement of the feeding and unloading mechanisms, the rotary conveyor has eight stations between the feeding and unloading stations.

5. The atomizer sealing performance testing station according to claim 4, characterized in that, The three vision detection units and the three air pressure detection units are arranged alternately in sequence, starting from the loading station of the rotary conveyor mechanism.

6. The atomizer sealing performance testing station according to claim 5, characterized in that, The testing facility also includes a defective product sorting unit, which is located adjacent to the unloading mechanism. The gripping end of the defective product sorting unit corresponds to the adjacent station of the unloading end of the rotary conveyor mechanism, in order to sort defective products that fail the appearance and sealing tests.

7. The atomizer sealing performance testing station according to claim 6, characterized in that, The inspection mechanism also includes a material unloading inspection unit, which is located next to the defective product sorting unit to perform visual inspection of the workpiece setting posture before unloading, so as to ensure the accuracy of the defective product sorting unit and the unloading mechanism in gripping the workpiece.

8. The atomizer sealing performance testing station according to claim 7, characterized in that, The visual inspection unit and the air pressure detection unit can be integrated into one unit to achieve simultaneous appearance inspection and sealing inspection.

9. The atomizer sealing performance testing station according to claim 8, characterized in that, The vision inspection unit is equipped with an industrial camera and a ring LED light source. The industrial camera is located at the top of the vision inspection unit, and the ring LED light source is located at the bottom of the industrial camera.

10. The atomizer sealing performance testing station according to claim 9, characterized in that, The air pressure detection unit is equipped with a cylinder and a clamping structure. The cylinder is located at the top of the air pressure detection unit, and the clamping structure is located at the bottom of the air pressure detection unit corresponding to the detection station.

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