Sample tube stopper on-sample device, on-sample apparatus, and sample pre-processing system

Abstract

This utility model relates to the field of in vitro diagnostic automation equipment technology, specifically to a sample tube plug loading device, loading equipment, and sample pretreatment system. The sample tube plug loading device includes: a conveying mechanism, comprising a conveying track and a screening structure. One end of the conveying track has a loading port for receiving sample tube plugs. The screening structure is correspondingly arranged with the conveying track to screen out sample tube plugs with incorrect orientation from the conveying track. A sorting mechanism is located at the other end of the conveying track and has a buffer position for storing sample tube plugs. The buffer position receives sample tube plugs from the conveying track. The conveying track transports the sample tube plugs to the sorting mechanism, while the screening structure simultaneously screens out sample tube plugs with incorrect orientation from the conveying track. The buffer position of the sorting mechanism can individually buffer sample tube plugs, thereby unifying the orientation of the sample tube plugs, reducing the difficulty of sorting sample tube plugs by orientation, and improving the efficiency of sorting and grasping.

Description

Technical Field

[0001] This utility model relates to the field of automated in vitro diagnostic equipment technology, specifically to a sample tube plug loading device, a loading device, and a sample pretreatment system. Background Technology

[0002] Chemiluminescence immunoassay analyzers are medical testing instruments that perform immunoassays on the human body by detecting the patient's serum. With the development of testing technology, chemiluminescence immunoassay analyzers are becoming faster and more integrated, which also means that higher demands are placed on the efficiency and accuracy of the sample pretreatment process. In the sample pretreatment process, most sample tubes need to undergo a cap-opening test, and after the test, the sample tube opening needs to be re-inserted to allow biological samples to evaporate or for impurities to fall into the sample.

[0003] Currently, on the sample analysis production line, the unloading of sample tube plugs is usually completed by a vibratory feeder and a conveyor line. The conveyor line transports the sample tube plugs, which are randomly selected by the vibratory feeder, to the working position. However, the sample tube plugs delivered to the working position do not have a uniform posture, which increases the difficulty of the working position to grasp the sample tube plugs. Therefore, the capping of sample tube plugs is usually done manually, which is inefficient. Utility Model Content

[0004] In view of this, the present invention provides a sample tube plug loading device, a sample loading equipment, and a sample pretreatment system to solve the problem that conventional sample tube plug loading is completed by a vibrating plate and a conveyor line, but the sample tube plugs delivered to the working position have inconsistent postures, which increases the difficulty of grasping the sample tube plugs and results in low plugging efficiency.

[0005] In a first aspect, this utility model provides a sample tube plug loading device, comprising:

[0006] The conveying mechanism includes a conveying track and a screening structure. One end of the conveying track has a feeding port for receiving sample tube plugs. The screening structure is arranged correspondingly to the conveying track and is used to screen out sample tube plugs with incorrect orientation from the conveying track.

[0007] The sorting mechanism, located at the other end of the conveying track, has a buffer position for storing sample tube plugs, which is used to receive sample tube plugs from the conveying track.

[0008] Optionally, a baffle plate is provided on the side of the conveying track opposite to the feeding port, and the baffle plate extends in the same direction as the conveying track;

[0009] The screening structure includes: an inclined trough and a first stop corresponding to the inclined trough. The first end of the inclined trough is connected to the conveying track, and the second end extends away from the conveying track. The first stop is disposed on the first end surface of the inclined trough. The distance between the first stop and the baffle plate is greater than the diameter of the sample tube plug and less than the length of the sample tube plug.

[0010] Optionally, the screening structure further includes a second stop, which is disposed on the baffle plate and corresponds to the inclined groove. The distance between the second stop and the conveying track is greater than the diameter of the sample tube plug and less than the length of the sample tube plug.

[0011] Optionally, the first stop has a stop surface and a first guide slope, the stop surface being perpendicular to the transport direction of the conveying track, the second stop has a second guide slope, the first guide slope being inclined from the chute toward the direction close to the conveying track in the movement direction of the conveying track, and the second guide slope being inclined from the baffle plate toward the direction close to the chute.

[0012] Optionally, the sorting mechanism includes a sorting disk, and a plurality of buffer positions are arranged at circumferential intervals along the sorting disk. The sorting disk is driven to rotate so that the plurality of buffer positions sequentially dock with the outlet of the conveying track.

[0013] Optionally, the sorting mechanism includes:

[0014] The sample tray is mounted on the support via a rotating shaft;

[0015] The third drive wheel is mounted on the bracket via a third drive motor;

[0016] The third driven wheel is coaxially mounted on the rotating shaft with the sample distribution disk, and the diameter of the third driven wheel is larger than the diameter of the third driving wheel;

[0017] The third synchronous belt is connected to the third driving pulley and the third driven pulley.

[0018] Optionally, the sorting mechanism includes a buffer structure disposed between the sample sorting tray and the conveying track. The sample tube plug passes through the buffer structure and enters the buffer position under the push of an external force. When the external force is lost, the sample tube plug stops on the buffer structure and has a clearance gap with the sample sorting tray.

[0019] Optionally, the buffer structure is a support block disposed on the bracket, the support block having a buffer surface flush with the upper surface of the conveying track.

[0020] Secondly, this utility model provides a sample tube plug loading device, including the above-mentioned sample tube plug loading device, and further including: a feeding mechanism, wherein the discharge end of the feeding mechanism is correspondingly arranged with the feeding port of the conveying track.

[0021] Thirdly, this utility model provides a sample pretreatment system, including the sample tube plug loading device described above.

[0022] Beneficial effects:

[0023] 1. The sample tube plug loading device provided by this utility model includes:

[0024] The conveying mechanism includes a conveying track and a screening structure. One end of the conveying track has a feeding port for receiving sample tube plugs. The screening structure is arranged correspondingly to the conveying track and is used to screen out sample tube plugs with incorrect orientation from the conveying track.

[0025] The sorting mechanism, located at the other end of the conveying track, has a buffer position for storing sample tube plugs, which is used to receive sample tube plugs from the conveying track.

[0026] In the above structure, the sample tube plug enters the conveyor track from the feeding port. The conveyor track transports the sample tube plug to the sorting mechanism. Simultaneously, the screening structure removes sample tube plugs with incorrect orientations from the conveyor track, allowing sample tube plugs with correct orientations to continue moving towards the sorting mechanism. The sorting mechanism's buffer position can individually buffer sample tube plugs, unifying their orientation for easier subsequent grasping. Thus, by coordinating the conveyor and sorting mechanisms, the orientation of the sample tube plugs is unified, reducing the difficulty of orientation-based sorting and improving the efficiency of sorting and grasping.

[0027] 2. The sample tube plug loading device provided by this utility model has a baffle plate on the side of the conveying track opposite to the loading port, and the baffle plate extends in the same direction as the conveying track. The baffle plate can prevent the sample tube plug from being pushed out from the side of the conveying track.

[0028] The screening structure includes: an inclined trough and a first stop corresponding to the inclined trough. The first end of the inclined trough is connected to the conveying track, and the second end extends away from the conveying track. The first stop is disposed on the first end surface of the inclined trough. The distance between the first stop and the baffle plate is greater than the diameter of the sample tube plug and less than the length of the sample tube plug.

[0029] The screening structure further includes a second stop, which is disposed on the baffle plate and corresponds to the inclined groove. The distance between the second stop and the conveying track is greater than the diameter of the sample tube plug and less than the length of the sample tube plug.

[0030] When the sample tube plugs enter the conveyor track from the loading port, a very small number of sample tube plugs may be in an incorrect posture. In order to prevent the sample tube plugs in the incorrect posture from being conveyed to the sorting mechanism, the first and second blocks can screen the sample tube plugs to ensure that the length direction of the sample tube plugs is the same as the conveying direction of the conveyor track. The sample tube plugs in the incorrect posture fall into the inclined chute after being blocked and slide down the inclined chute until they leave the conveyor track. This ensures the uniformity of the posture of the sample tube plugs when they are conveyed to the sorting mechanism, which facilitates docking with the buffer position of the sorting mechanism.

[0031] 3. The sample tube plug loading device provided by this utility model has a first stop block having a blocking surface and a first guide slope, the blocking surface being perpendicular to the transport direction of the conveying track, and a second stop block having a second guide slope. In the movement direction of the conveying track, the first guide slope is inclined from the inclined groove toward the direction close to the conveying track, and the second guide slope extends inclined from the baffle plate toward the direction close to the inclined groove.

[0032] During the movement of the sample tube plugs driven by the conveyor track, sample tube plugs in incorrect postures will contact the first or second stop. When the sample tube plug lies horizontally on the conveyor track, and the end of the sample tube plug near the sorting mechanism deviates from the conveyor track, the end of the sample tube plug contacts the abutment surface, thus falling into the inclined chute under force. When the sample tube plug lies horizontally on the conveyor track, and the end of the sample tube plug away from the sorting mechanism deviates from the conveyor track, the sample tube plug slides with the first guide inclined surface, causing the end of the sample tube plug away from the sorting mechanism to gradually move onto the conveyor track, while maintaining the length direction of the sample tube plug in the same direction as the conveyor track. When the sample tube plug is upright on the conveyor track, it contacts the second guide inclined surface, and under the guidance of the second guide inclined surface, the sample tube plug falls into the inclined chute. The first and second stops can screen out sample tube plugs in incorrect postures from the conveyor track. The high consistency of sample tube plug posture due to the screening structure facilitates alignment with the sorting mechanism.

[0033] 4. The sample tube plug loading device provided by this utility model includes a sorting mechanism comprising a sorting disk, with multiple buffer positions arranged at circumferential intervals along the sorting disk. The sorting disk is driven to rotate so that the multiple buffer positions sequentially connect with the outlet of the conveying track. This achieves individual buffering of the sample tube plugs to facilitate subsequent grasping of the sample tube plugs.

[0034] 6. The sample tube plug loading device provided by this utility model, wherein the sorting mechanism includes:

[0035] The sample tray is mounted on the support via a rotating shaft;

[0036] The third drive wheel is mounted on the bracket via a third drive motor;

[0037] The third driven wheel is coaxially mounted on the rotating shaft with the sample distribution disk, and the diameter of the third driven wheel is larger than the diameter of the third driving wheel;

[0038] The third synchronous belt is connected to the third driving pulley and the third driven pulley.

[0039] The third drive motor drives the sample distribution disk to rotate via the third drive wheel, the third synchronous belt, the third driven wheel, and the rotating shaft, so that multiple buffer positions on the sample distribution disk can be aligned sequentially with the interface of the conveying track. The different diameter settings of the third driven wheel and the third drive wheel can increase the transmission reduction ratio, thereby improving the positioning accuracy.

[0040] 7. The sample tube plug loading device provided by this utility model includes a sorting mechanism comprising a buffer structure disposed between the sample sorting tray and the conveying track. The sample tube plug passes through the buffer structure and enters the buffer position under the push of an external force. When the external force is lost, the sample tube plug stops on the buffer structure and has an avoidance gap with the sample sorting tray.

[0041] Because the sample tube plug needs the pushing force of the next sample tube plug to enter the buffer position, it cannot move into place when there is only one sample tube plug on the conveyor track. That is, part of the sample tube plug is in the buffer position and the other part is in the conveyor track, which can easily cause the sample tray to get stuck during rotation. To solve this problem, the buffer structure can support the sample tube plug from the conveyor track. The next sample tube plug conveyed by the conveyor track can push the existing sample tube plug on the buffer structure into the buffer position. When there is no sample tube plug on the conveyor track, the last sample tube plug will stop on the buffer structure, and there is a clearance between the end of the sample tube plug and the sample tray, so it will not interfere with the rotation of the sample tray. Attached Figure Description

[0042] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0043] Figure 1 A schematic diagram of the sample tube plug loading device provided by this utility model;

[0044] Figure 2 A cross-sectional structural schematic diagram of the sample tube plug sample loading device provided by this utility model;

[0045] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0046] Figure 4 A schematic diagram of the screening structure provided by this utility model;

[0047] Figure 5 A cross-sectional structural diagram of the screening structure provided by this utility model;

[0048] Figure 6 A schematic diagram of the buffer structure provided by this utility model;

[0049] Figure 7 A schematic cross-sectional view of the sorting mechanism provided by this utility model;

[0050] Figure 8 A three-dimensional structural schematic diagram of the sample tube plug loading device provided by this utility model;

[0051] Figure 9 A cross-sectional structural schematic diagram of the sample tube plug loading device provided by this utility model;

[0052] Figure 10 A first-view perspective three-dimensional structural diagram of the feeding mechanism provided by this utility model;

[0053] Figure 11 A second-view perspective three-dimensional structural diagram of the feeding mechanism provided by this utility model;

[0054] Figure 12 A cross-sectional structural schematic diagram of the feeding mechanism provided by this utility model;

[0055] Figure 13 A schematic diagram showing the first push plate and the second push plate in a first state, provided by this utility model;

[0056] Figure 14 A schematic diagram showing the first and second push plates in a second state, as provided by this utility model;

[0057] Figure 15 A schematic diagram of the structure of the silo provided by this utility model.

[0058] Explanation of reference numerals in the attached figures:

[0059] 1. Hopper; 11. First enclosure; 12. Second enclosure; 13. Third enclosure; 141. Transmitter; 142. Receiver; 101. Feeding channel; 102. Feeding end; 103. Discharge end; 104. Through-hole; 105. Guide surface;

[0060] 2. Feeding mechanism; 201. Base; 202. First mounting base; 2021. Through groove; 203. First side plate; 204. Second side plate; 205. Protrusion; 21. Push plate assembly; 211. First push plate; 212. Second push plate; 213. Fixing plate; 214. Connecting plate;

[0061] 221. First slide rail; 222. First slider; 223. First drive motor; 224. First driving wheel; 225. First driven wheel; 226. First synchronous belt; 227. Transmission plate; 23. Guide bar; 241. Sensor baffle; 242. Second detection unit;

[0062] 3. Conveying mechanism; 301. Feeding port; 302. Second mounting base plate;

[0063] 31. Conveying track;

[0064] 32. Material baffle;

[0065] 331. Inclined groove; 332. First stop block; 3321. Abutting surface; 3322. First guide inclined surface; 333. Second stop block; 3331. Second guide inclined surface;

[0066] 341. Second drive motor; 342. Second driving wheel; 343. Second driven wheel; 344. Reversing wheel; 345. Support wheel;

[0067] 35. Third detection unit; 36. Fourth detection unit;

[0068] 4. Sorting mechanism; 401. Buffer position; 402. Third mounting base; 403. Fixing component;

[0069] 41. Sample distribution tray; 411. Rotating shaft;

[0070] 421. Bracket; 422. Third drive pulley; 423. Third driven pulley; 424. Third synchronous belt; 425. Third drive motor;

[0071] 43. Buffer structure; 431. Buffer surface; 432. Clearance gap;

[0072] 441. Indexing encoder; 442. Fifth detection unit;

[0073] 5. Sample tube plug. Detailed Implementation

[0074] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0075] See Figure 1 and Figure 2 , Figure 1 This is a three-dimensional structural diagram of the sample tube plug loading device provided in this embodiment. Figure 2 This is a cross-sectional structural schematic diagram of the sample tube plug loading device provided in this embodiment. This embodiment provides a sample tube plug loading device, including:

[0076] The conveying mechanism 3 includes a conveying track 31 and a screening structure. One end of the conveying track 31 has a feeding port 301 for receiving sample tube plugs 5. The screening structure is arranged correspondingly to the conveying track 31 and is used to screen out sample tube plugs 5 with incorrect posture from the conveying track 31.

[0077] The sorting mechanism 4 is located at the other end of the conveying track 31 and has a buffer position 401 for storing sample tube plugs 5. The buffer position 401 is used to receive sample tube plugs 5 from the conveying track 31.

[0078] In the above structure, the sample tube plug 5 enters the conveying track 31 from the feeding port 301. The conveying track 31 transports the sample tube plug 5 to the sorting mechanism 4. At the same time, the screening structure filters out sample tube plugs 5 with incorrect posture from the conveying track 31, allowing sample tube plugs 5 with correct posture to continue moving towards the sorting mechanism 4. The buffer position 401 of the sorting mechanism 4 can buffer the sample tube plug 5 individually, and the buffer position 401 can unify the posture of the sample tube plug 5 to facilitate subsequent grasping of the sample tube plug 5. Thus, by coordinating the conveying mechanism 3 and the sorting mechanism 4 to unify the posture of the sample tube plug 5, the difficulty of sorting the posture of the sample tube plug 5 is reduced, and the efficiency of sorting and grasping is improved.

[0079] In a preferred embodiment, a baffle plate 32 is provided on the side of the conveying track 31 opposite to the feeding port 301, and the baffle plate 32 extends in the same direction as the conveying track 31. The baffle plate 32 can prevent the sample tube plug 5 from being ejected from the side of the conveying track 31.

[0080] See Figure 4 and Figure 5 , Figure 4 This is a schematic diagram of the screening structure. Figure 5This is a cross-sectional schematic diagram of the screening structure. In a preferred embodiment, the screening structure includes: an inclined groove 331 and a first stop 332 corresponding to the inclined groove 331. The first end of the inclined groove 331 is connected to the conveying track 31, and the second end extends away from the conveying track 31. The first stop 332 is disposed on the first end surface of the inclined groove 331. The distance between the first stop 332 and the baffle plate 32 is greater than the diameter of the sample tube plug 5 and less than the length of the sample tube plug 5.

[0081] The screening structure also includes a second stop 333, which is disposed on the baffle plate 32 and corresponds to the inclined groove 331. The distance between the second stop 333 and the conveying track 31 is greater than the diameter of the sample tube plug 5 and less than the length of the sample tube plug 5.

[0082] When the sample tube plug 5 enters the conveying track 31 from the feeding port 301, a very small number of sample tube plugs 5 may be in an incorrect posture. In order to avoid the sample tube plugs 5 in the incorrect posture being conveyed to the sorting mechanism 4, the first stop 332 and the second stop 333 can screen the sample tube plugs 5 to ensure that the length direction of the sample tube plugs 5 is the same as the conveying direction of the conveying track 31. The sample tube plugs 5 in the incorrect posture fall into the inclined chute 331 after being blocked, and slide down the inclined chute 331 until they leave the conveying track 31. This ensures the uniformity of the posture of the sample tube plugs 5 when they are conveyed to the sorting mechanism, which is convenient for docking with the buffer position 401 of the sorting mechanism 4.

[0083] It should be noted that the correct posture of the sample tube plug 5 refers to the sample tube plug 5 being in a horizontal position, and the length direction of the sample tube plug 5 being the same as the conveying direction of the conveying track 31. This serves as a benchmark to ensure the uniformity of the sample tube plug 5's posture. The first stop 332 and the second stop 333 allow the sample tube plug 5 in the correct posture to pass. However, a very small number of sample tube plugs 5 in incorrect postures may remain on the conveying track 31, such as in an upright posture, i.e., the length direction of the sample tube plug 5 is perpendicular to the conveying direction of the conveying track 31. The movement path of the upright sample tube plug 5 passes through the second stop 333, so the second stop 333 can block the upright sample tube plug 5, causing it to fall into the inclined groove 331 after being blocked. Another example is a deviated posture, i.e., the sample tube plug 5 is lying horizontally on the conveying track 31, but the sample... The length direction of the tube plug 5 is at a certain angle to the conveying direction of the conveying track 31. Since the conveying track 31 has a baffle plate 32 on the side away from the feeding mechanism 2, the end of the sample tube plug 5 can only extend to the side closer to the feeding mechanism 2. Therefore, when the sample tube plug 5 is in an off-center posture, the movement path of the sample tube plug 5 passes through the first baffle 332. The first baffle 332 can block the sample tube plug 5 in an off-center posture. After being blocked, the sample tube plug 5 falls into the inclined groove 331.

[0084] In a preferred embodiment, the first stop 332 has an abutment surface 3321 and a first guide slope 3322, the abutment surface 3321 being perpendicular to the transport direction of the conveying track 31, and the second stop 333 having a second guide slope 3331. In the movement direction of the conveying track 31, the first guide slope 3322 is inclined from the chute 331 toward the direction close to the conveying track 31, and the second guide slope 3331 extends inclined from the baffle plate 32 toward the direction close to the chute 331.

[0085] During the movement of the sample tube plug 5 driven by the conveyor track 31, the sample tube plug 5 in an incorrect posture will contact the first stop 332 or the second stop 333. When the sample tube plug 5 lies horizontally on the conveyor track 31 and the end of the sample tube plug 5 near the sorting mechanism 4 deviates from the conveyor track 31, the end of the sample tube plug 5 contacts the abutment surface 3321, and thus falls into the inclined groove 331 under force. When the sample tube plug 5 lies horizontally on the conveyor track 31 and the sample tube plug 5 is away from the sorting mechanism 4... When one end deviates from the conveying track 31, the sample tube plug 5 slides against the first guide ramp 3322, causing the end of the sample tube plug 5 away from the sorting mechanism 4 to gradually move onto the conveying track 31, while maintaining the length direction of the sample tube plug 5 in the same direction as the conveying track 31. When the sample tube plug 5 is upright on the conveying track 31, it contacts the second guide ramp 3331, and under the guidance of the second guide ramp 3331, the sample tube plug 5 falls into the inclined groove 331. The first stop 332 and the second stop 333 can screen out the sample tube plug 5 with incorrect posture from the conveying track 31. The high posture consistency of the sample tube plug 5 through the screening structure facilitates alignment with the sorting mechanism 4.

[0086] See Figure 5 In a preferred embodiment, the baffle plate 32 is provided with a third detection unit 35 corresponding to the screening structure. The third detection unit 35 can be a contact sensor. The contact sensor has a micro-motion probe located on the transport path of the sample tube plug 5. The micro-motion probe is triggered to indicate that the sample tube plug 5 has passed. The micro-motion probe is not triggered to indicate that there is no sample tube plug 5, or that the sample tube plug 5 is stuck at the screening structure.

[0087] In a preferred embodiment, the conveying mechanism 3 includes a second mounting base 302, on which a second drive motor 341 is mounted via a motor mount. A second drive wheel 342 is mounted at the output end of the second drive motor 341. The second mounting base 302 has two second driven wheels 343 arranged in a horizontal direction. A second synchronous belt is wound around the second drive wheel 342 and the two second driven wheels 343. A conveying track 31 is formed on the surface of the second synchronous belt. When the second drive motor 341 is working, the conveying track 31 conveys the sample tube plug 5 in a horizontal direction.

[0088] In a preferred embodiment, two reversing wheels 344 are provided on the second mounting base 302, located above the second driving wheel 342. The inner surface of the second synchronous belt is connected to the second driving wheel 342, and the outer surface of the second synchronous belt is constrained by the bending of the reversing wheels 344. This facilitates a reasonable arrangement of the second synchronous belt and makes it easier to tension the second synchronous belt. As an optional embodiment, the second drive motor 341 is located on the side of the second mounting base 302 away from the feeding mechanism 2, and a support wheel 345 is provided on the side of the second mounting base 302 near the feeding mechanism 2. The outer surface of the second synchronous belt contacts and engages with the support wheel 345.

[0089] In a preferred embodiment, a sealing plate 303 is provided on the conveying track 31. The sealing plate 303 is located downstream of the screening structure. The sealing plate 303 includes a side sealing plate disposed opposite to the baffle plate 32, and an upper sealing plate connected between the side sealing plate and the baffle plate 32. The upper sealing plate is at the same height as the second stop 333. The sealing plate 303 can prevent the sample tube plug 5 from falling off the side of the conveying track 31 and can ensure that the sample tube plug 5 moves in the correct posture to the position where it docks with the sorting mechanism 4.

[0090] See Figure 7 , Figure 7 This is a cross-sectional schematic diagram of the sorting structure. In a preferred embodiment, the sorting mechanism 4 includes a sample sorting disk 41, with a plurality of buffer positions 401 arranged at circumferential intervals along the sample sorting disk 41. The sample sorting disk 41 is driven to rotate so that the plurality of buffer positions 401 sequentially dock with the outlet of the conveying track 31. This achieves individual buffering of the sample tube plug 5, facilitating subsequent grasping of the sample tube plug 5.

[0091] In one optional embodiment, the sample distribution disk 41 has a turntable-shaped structure, and multiple receiving grooves are formed on the circumferential wall of the sample distribution disk 41. The receiving grooves are circular holes with a certain depth and an inner diameter corresponding to the diameter of the sample tube plug 5. The receiving grooves form buffer positions 401. As an optional embodiment, at least four receiving grooves can be evenly formed on the circumferential wall of the sample distribution disk 41, each used to independently support the sample tube plug 5.

[0092] In a preferred embodiment, the sorting mechanism 4 includes:

[0093] The sample tray 41 is mounted on the support 421 via a rotating shaft 411;

[0094] The third drive wheel 422 is mounted on the bracket 421 via the third drive motor 425;

[0095] The third driven wheel 423 is coaxially mounted on the rotating shaft 411 with the sample distribution disk 41, and the diameter of the third driven wheel 423 is larger than the diameter of the third driving wheel 422;

[0096] The third synchronous belt 424 is connected to the third driving pulley 422 and the third driven pulley 423.

[0097] The third drive motor 425 drives the sample distribution disk 41 to rotate through the third drive wheel 422, the third synchronous belt 424, the third driven wheel 423 and the rotating shaft 411, so that the multiple buffer positions 401 on the sample distribution disk 41 can be aligned with the interface of the conveying track 31 in sequence. The different diameter settings of the third driven wheel 423 and the third drive wheel 422 can increase the transmission reduction ratio, thereby improving the positioning accuracy.

[0098] In one optional embodiment, the sorting mechanism 4 includes a third mounting base 402, a bracket 421 mounted on the third mounting base 402, the third mounting base 402 being mounted on a first mounting base 202 by a fastener 403, and a second mounting base 302 being mounted on the third mounting base 402.

[0099] In one optional embodiment, an indexing code disk 441 is coaxially fixed on the third driven wheel 423. The indexing code disk 441 has protrusions that correspond in number and position to the buffer positions 401. A fifth detection unit 442 corresponding to the indexing code disk 441 is provided on the bracket 421. The fifth detection unit 442 can be a detection optocoupler. The fifth detection unit 442 can determine the rotation accuracy by detecting the movement distance of the protrusions.

[0100] See Figure 3 and Figure 6 In a preferred embodiment, the sorting mechanism 4 includes a buffer structure 43 disposed between the sample tray 41 and the conveying track 31. The sample tube plug 5 passes through the buffer structure 43 and enters the buffer position 401 under the push of an external force. When the external force is lost, the sample tube plug 5 stops on the buffer structure 43 and has a clearance gap 432 between it and the sample tray 41.

[0101] Since the sample tube plug 5 needs the pushing force of the next sample tube plug 5 to enter the buffer position 401, the conveying track 31 cannot move into place when there is only one sample tube plug 5. That is, part of the sample tube plug 5 is located in the buffer position 401 and the other part is located in the conveying track 31, which can easily cause the sample tray 41 to get stuck during rotation. To solve this problem, the buffer structure 43 can carry the sample tube plug 5 from the conveying track 31. The next sample tube plug 5 conveyed by the conveying track 31 can push the original sample tube plug 5 on the buffer structure 43 into the buffer position 401. When there is no sample tube plug 5 on the conveying track 31, the last sample tube plug 5 will stop on the buffer structure 43, and there is a clearance gap 432 between the end of the sample tube plug 5 and the sample tray 41, which will not interfere with the rotation of the sample tray 41.

[0102] In a preferred embodiment, the buffer structure 43 is a support block disposed on the bracket 421, the support block having a buffer surface 431 flush with the upper surface of the conveying track 31.

[0103] In one alternative embodiment, a fourth detection unit 36 ​​is provided at the exit of the transport track 31. The fourth detection unit 36 ​​may be a contact sensor. The contact sensor has a micro-motion probe located on the transport path of the sample tube plug 5. The micro-motion probe is triggered to indicate that the sample tube plug 5 has passed through. The micro-motion probe is not triggered to indicate that there is no sample tube plug 5 at the exit of the transport track 31.

[0104] See Figure 8 and Figure 9 , Figure 8 This is a three-dimensional structural diagram of the sample tube plug loading device provided in this embodiment. Figure 9 This is a cross-sectional structural diagram of the sample tube plug loading device provided in this embodiment. This embodiment provides a sample tube plug loading device, including the aforementioned sample tube plug loading apparatus, and further including: a feeding mechanism 2, wherein the discharge end 103 of the feeding mechanism 2 is correspondingly configured with the feeding port 301 of the conveying track 31.

[0105] In a preferred embodiment, the sample tube plug loading device further includes: a hopper 1 for storing sample tube plugs 5.

[0106] The feeding mechanism 2 is connected to the hopper 1 and forms a feeding channel 101. The feeding end 102 of the feeding channel 101 is located inside the hopper 1. The feeding mechanism 2 includes a pusher assembly 21 movably disposed on the feeding channel 101. The pusher assembly 21 is driven to move along the feeding channel 101 to drive the sample tube plug 5 in the hopper 1 to the discharge end 103 of the feeding channel 101.

[0107] During operation, the pusher assembly 21 can receive the sample tube plug 5 at the feed end 102, and then move along the feeding channel 101 to drive the sample tube plug 5 to the discharge end 103. The sample tube plug 5 enters the conveying track 31 from the discharge end 103 through the feeding port 301. The conveying track 31 transports the sample tube plug 5 to the sorting mechanism 4. The multiple buffer positions 401 of the sorting mechanism 4 can individually buffer the sample tube plug 5. The buffer positions 401 can unify the posture of the sample tube plug 5 to facilitate subsequent grasping of the sample tube plug 5.

[0108] Compared to the traditional sample tube plug 5 feeding method, the sample tube plug feeding device of this utility model can unify the posture of the sample tube plug 5 through the sorting mechanism 4, reduce the difficulty of sample tube plug posture sorting, improve the sorting and gripping efficiency, and use the push plate assembly 21 to feed can reduce noise, and the structure is simple and the manufacturing cost is low.

[0109] In a preferred embodiment, the conveying track 31 is positioned above the hopper 1, and the feeding channel 101 extends along the height direction. The bottom of the feeding channel 101 is the feeding end 102 and is located in the hopper 1. The top of the feeding channel 101 is the discharging end 103 and is aligned with the conveying track 31 in height. The pusher assembly 21 is driven to move along the feeding channel 101 in the height direction. That is, under the pushing action of the pusher assembly 21, the sample tube plug 5 can be driven from the feeding end 102 to the discharging end 103 and then enter the conveying track 31, simplifying the movement stroke.

[0110] See Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 and Figure 14 , Figure 9 This is a first-person perspective 3D structural diagram of the feeding mechanism. Figure 11 This is a second-view 3D structural diagram of the feeding mechanism. Figure 12 This is a cross-sectional structural diagram of the feeding mechanism. Figure 13 This is a schematic diagram showing the first and second push plates in their first state. Figure 14This is a schematic diagram showing the first and second push plates in their second state. In a preferred embodiment, the feeding channel 101 is provided with a fixing plate 213, and the push plate assembly 21 includes a first push plate 211 and a second push plate 212 disposed on opposite sides of the fixing plate 213. The top surfaces of the first push plate 211, the second push plate 212, and the fixing plate 213 are used to support the sample tube plug 5. The top surface of the fixing plate 213 is located between the feeding end 102 and the discharging end 103. The top surfaces of the first push plate 211, the second push plate 212, and the fixing plate 213 are provided with an incline. Through the above structure, the first push plate 211 and the second push plate 212 are positioned relative to the fixing plate 213. During the sliding process, the first push plate 211 can transport the sample tube plug 5 in the hopper to the fixed plate 213, and the second push plate 212 can transport the sample tube plug 5 on the fixed plate 213 to the discharge end. The top surfaces of the first push plate 211, the fixed plate 213 and the second push plate 212 are all inclined so that the sample tube plug 5 can move sequentially along the arrangement order of the first push plate 211, the fixed plate 213 and the second push plate 212 under its own weight. The fixed plate 213 has the function of buffering the sample tube plug 5 between the feeding end and the discharge end, thereby shortening the movement stroke of the first push plate 211 and the second push plate 212 and improving the conveying efficiency.

[0111] In a preferred embodiment, the top surfaces of the first push plate 211, the second push plate 212, and the fixing plate 213 are inclined surfaces that are tilted in a first direction. The tilt angle of the top surfaces of the first push plate 211, the second push plate 212, and the fixing plate 213 can be in the range of 25° to 35°, so that the sample tube plug 5 can roll or slide along the corresponding top surface under its own weight.

[0112] In a preferred embodiment, the feeding mechanism includes a first driving structure. The first driving structure drives the first pusher plate 211 to move to a first position, so that the first pusher plate 211 receives the sample tube plug 5 from the hopper. The first driving structure also drives the first pusher plate 211 to move to a second position, so that the first pusher plate 211 pushes the sample tube plug 5 onto the top surface of the fixed plate 213. With this structure, the first driving structure can move the first pusher plate 211 between the first and second positions to transfer the sample tube plug 5 from the hopper to the top surface of the fixed plate 213.

[0113] In a preferred embodiment, the first driving structure drives the second pusher plate 212 to a third position, so that the second pusher plate 212 receives the sample tube plug 5 from the fixed plate 213; the first driving structure also drives the second pusher plate 212 to a fourth position, so that the second pusher plate 212 pushes the sample tube plug 5 onto the conveying track. The first driving structure can move the second pusher plate 212 between the third and fourth positions to convey the sample tube plug 5 from the top surface of the fixed plate 213 to the discharge end.

[0114] In a preferred embodiment, the first driving structure is used to drive the first push plate 211 and the second push plate 212 to move synchronously to a first state and a second state. In the first state, the first push plate 211 moves to the first position, the second push plate 212 moves to the third position, and the top surface of the second push plate 212 is lower than the top surface of the fixed plate 213 in the height direction. In the second state, the first push plate 211 moves to the second position, and the top surface of the first push plate 211 is higher than the top surface of the fixed plate 213 in the height direction, and the second push plate 212 moves to the fourth position. With this configuration, in the first state, the sample tube plug 5 in the hopper rolls to the top surface of the first push plate 211 by its own weight, and the sample tube plug 5 on the top surface of the fixed plate 213 rolls to the top surface of the second push plate 212 by its own weight. In the second state, the sample tube plug 5 on the top surface of the first push plate 211 rolls to the top surface of the fixed plate 213 by its own weight, and the sample tube plug 5 on the top surface of the second push plate 212 rolls to the conveying mechanism by its own weight.

[0115] Specifically, the first drive structure can simultaneously drive the first push plate 211 and the second push plate 212 to move. In the first state, the sample tube plug 5 in the hopper 1 moves to the top surface of the first push plate 211, and at the same time, the sample tube plug 5 on the top surface of the fixed plate 213 moves to the top surface of the second push plate 212. In the second state, the sample tube plug 5 on the first push plate 211 moves to the top surface of the fixed plate 213 to replenish the top surface of the fixed plate 213, and at the same time, the sample tube plug 5 on the second push plate 212 moves to the discharge end 103. The above steps are repeated to complete the feeding of all the sample tube plugs 5 in the hopper 1 to the conveying track 31.

[0116] Therefore, the movement of the sample tube plug 5 in the feeding channel is divided into two processes. The first process is that the sample tube plug 5 moves from the hopper to the top surface of the fixed plate 213, and the second process is that the sample tube plug 5 moves from the top surface of the fixed plate 213 to the discharge end. The first drive structure drives the first push plate 211 and the second push plate 212 to move synchronously, so that the two processes can be carried out simultaneously, that is, two batches of sample tube plugs 5 can be moved at the same time. Compared with conveying the sample tube plug 5 with a single movement stroke, this setting can shorten the conveying cycle of the sample tube plug 5 and improve the feeding efficiency of the sample tube plug 5. In a preferred embodiment, the length of the top surface of the first push plate 211, the second push plate 212 and the fixed plate 213 is greater than the length of the sample tube plug 5, so that the sample tube plug 5 can cooperate with the top surface of the first push plate 211, the second push plate 212 and the fixed plate 213 in a horizontal position. In one optional embodiment, the top surface length of the first push plate 211, the second push plate 212, and the fixing plate 213 is at least three times the length of the sample tube plug 5, so that the first push plate 211, the second push plate 212, and the fixing plate 213 can carry at least three horizontally positioned sample tube plugs 5 at a time, thereby increasing the number of samples fed at one time and improving feeding efficiency. Correspondingly, the width of the feeding channel 101 and the size of the feeding port 301 of the conveying track 31 are set to correspond to the top surface length of the first push plate 211, the second push plate 212, and the fixing plate 213.

[0117] In a preferred embodiment, in the first state, the top surface of the first push plate 211 is lower than the bottom surface of the hopper 1, and the top surface of the fixed plate 213 is higher than the top surface of the second push plate 212; in the second state, the top surface of the first push plate 211 is higher than the top surface of the fixed plate 213, and the top surface of the second push plate 212 is higher than the discharge end 103.

[0118] To clearly illustrate the feeding method of the pusher assembly 21, the following will combine... Figure 13 and Figure 14 The working principle of the first push plate 211, the second push plate 212 and the fixed plate 213 is explained.

[0119] See Figure 13 The pusher assembly 21 is driven to move to the first pusher 211 and the second pusher 212 in the first state, and pauses in the first state for a predetermined time. The sample tube plug 5 in the hopper 1 can move to the first pusher 211, and the sample tube plug 5 on the fixed plate 213 moves to the second pusher 212.

[0120] See Figure 14The pusher assembly 21 is driven to move from the first state to the second state and pauses in the second state for a predetermined time. The sample tube plug 5 on the first pusher 211 moves to the fixed plate 213, and the sample tube plug 5 on the second pusher 212 moves to the conveying track 31.

[0121] Specifically, the predetermined time can be determined according to the actual situation. The predetermined time corresponding to the first state and the predetermined time corresponding to the second state can be the same or different. Understandably, after the predetermined time, the sample tube plugs 5 at different positions can all move into place on the next top surface or the conveyor track 31.

[0122] See Figure 9 and Figure 15 , Figure 15 This is a schematic diagram of the hopper structure. In a preferred embodiment, the feeding mechanism 2 includes a first mounting base plate 202, and the hopper 1 is formed by multiple plates and the first mounting base plate 202. The bottom of the hopper 1 tapers and forms an opening 104 near the first mounting base plate 202. The first pusher plate 211 is driven to pass through the opening. In the first state, the top surface of the first pusher plate 211 is aligned with the opening 104. After a large number of disordered sample tube plugs 5 enter the hopper 1, they tend to slide down the inner wall of the hopper 1 to the opening 104. The alignment of the top surface of the first pusher plate 211 with the opening can efficiently receive the sample tube plugs 5. After the first pusher plate 211 leaves the opening 104, the surface of the first pusher plate 211 facing the hopper 1 acts as a barrier against the sample tube plugs 5.

[0123] See Figure 15 In a preferred embodiment, the hopper 1 is enclosed by a first enclosure 11, a second enclosure 12, a third enclosure 13, and a first mounting base plate 202. The hopper 1 has a semi-enclosed cavity and a top opening, allowing the sample tube plug 5 to enter the hopper through the top opening. In another preferred embodiment, the first enclosure 11 faces the first mounting base plate 202, while the second enclosure 12 and the third enclosure 13 are opposite each other and connected to both sides of the first enclosure 11. The bottom of the first enclosure 11 is bent to form an opening 104 with the second enclosure 12 and the third enclosure 13. The bottom surface of the first enclosure 11 forms an inclined guide surface 105, allowing multiple sample tube plugs 5 to be stacked on the guide surface 105 and to tend to move toward the opening 104.

[0124] See Figure 15 In a preferred embodiment, the bottom of the hopper 1 has a first detection unit, which is used to detect whether there is a sample tube plug 5 in the hopper 1. This allows for timely replenishment of the hopper 1 based on the remaining amount of sample tube plug 5 in the hopper 1, or for controlling the feeding mechanism to stop working.

[0125] In a preferred embodiment, the first detection unit includes a transmitter 141 and a receiver 142 disposed near the port 104. The transmitter 141 is disposed on the second enclosure 12, and the receiver 142 is disposed on the third enclosure 13. The transmitter 141 and the receiver 142 are aligned in the height direction. The transmitter 141 can continuously emit a light beam of a specific wavelength to the receiver. The receiver 142 is used to monitor the intensity of the light beam emitted by the transmitter 141 in real time. When there is a sample tube plug 5 near the port 104 in the hopper 1, the light beam can be blocked by the sample tube plug 5. If the receiver 142 does not detect the light beam or detects that the light beam intensity is lower than a preset intensity, it indicates that there is a sample tube plug 5 in the hopper 1; if the receiver 142 continuously detects the light beam, it indicates that there is no sample tube plug 5 in the hopper 1.

[0126] In a preferred embodiment, the transmitting end 141 is a light-emitting diode or a laser diode, and the receiving end 142 is a photosensitive element, which can be a photodiode or a phototransistor.

[0127] In a preferred embodiment, the feeding mechanism 2 includes a base 201, on which a first mounting plate 202 is mounted and extends along the height direction.

[0128] In a preferred embodiment, a first side plate 203 and a second side plate 204 are respectively provided on two opposite edges extending along the height direction of the first mounting substrate 202, forming a groove-shaped feeding channel 101. The first side plate 203 and the second side plate 204 provide abutment against the sample tube plug 5. In a preferred specific embodiment, the two ends of the fixing plate 213 are respectively fixedly disposed on the first side plate 203 and the second side plate 204. The fixing plate 213 is parallel to the first mounting substrate 202, and there is a gap between the surfaces of the fixing plate 213 and the opposing surfaces of the first mounting substrate 202 that allows the second push plate 212 to pass through. A protrusion 205 is provided on the top of the second side plate 204 for docking with the conveyor track.

[0129] See Figure 9 , Figure 10 , Figure 11 and Figure 12 In a preferred embodiment, the first driving structure includes:

[0130] The first slide rail 221 is mounted on the first mounting base plate 202;

[0131] The first slider 222 is guided and engaged with the first slide rail 221, and the push plate assembly 21 is mounted on the first slider 222;

[0132] The first drive motor 223 is mounted on the first mounting base plate 202 and is connected to the push plate assembly 21 in a transmission manner.

[0133] The first drive motor 223 can drive the pusher assembly 21 to move. The guiding cooperation between the first slider 222 and the first slide rail 221 can limit the movement direction of the pusher assembly 21, which occupies less space, has lower cost, and higher reliability.

[0134] In a preferred embodiment, a first slide rail 221 is mounted on a first surface of a first mounting base 202 and extends along the height direction. A first slider 222 is guided and engaged with the first slide rail 221. The bottom of the pusher assembly 21 is fixedly mounted on the first slider 222. A first drive motor 223 is mounted on a second surface of the first mounting base 202 opposite to the first surface via a motor mount. A rotatable first drive wheel 224 and a first driven wheel 225 are arranged along the height direction on the second surface of the first mounting base 202, along with a first synchronous belt 226 connected to the first drive wheel 224 and the first driven wheel 225. The first drive wheel 224 is fixedly mounted on the output end of the first drive motor 223. The first mounting base 202 has a through slot 2021 extending along the height direction, which is aligned with the first synchronous belt 226. A transmission plate 227 is fixedly mounted on the first synchronous belt 226, and the transmission plate 227 passes through the through slot 2021 and connects to the pusher assembly 21. This allows for a compact structure.

[0135] In a preferred embodiment, the pusher assembly 21 further includes a connecting plate 214, through which the bottoms of the first pusher 211 and the second pusher 212 are connected. The connecting plate 214 separates the opposing surfaces of the first pusher 211 and the second pusher 212 into a gap that allows the fixing plate 213 to pass through. The first slider 222 is fixedly connected to the bottom of the second pusher 212, and the transmission plate 227 is fixedly connected to the bottom of the second pusher 212.

[0136] In a preferred embodiment, a guide strip 23 is provided on the second surface of the top of the first mounting substrate 202. The guide strip 23 is aligned with the side of the conveying track 31. In the second state, the top surface of the second push plate 212 is higher than the top surface of the guide strip 23, allowing the sample tube plug 5 to move onto the conveying track 31 via the guide strip 23. The guide strip 23 provides a smooth transition for the movement of the sample tube plug 5. As an optional embodiment, the top surface of the guide strip 23 is an inclined surface sloping in the first direction, with the same inclination angle as the top surface of the second push plate 212.

[0137] In a preferred embodiment, a sensor baffle 241 is provided at the bottom of the first push plate 211, and a second detection unit 242 is provided at a corresponding position on the first surface of the first mounting substrate 202. When the first push plate 211 descends to the first state, the sensor baffle 241 moves synchronously to trigger the second detection unit 242, indicating that the first push plate 211 has descended to the correct position. The second detection unit 242 can monitor the optocoupler. When the sensor baffle 241 moves between the light-emitting element and the light-receiving element of the optocoupler, the second detection unit 242 is triggered, indicating that the first push plate 211 has moved to the first state.

[0138] In a preferred embodiment, the conveying direction of the conveying track 31 is parallel to the length direction of the first push plate 211 and the second push plate 212, thereby facilitating the reception of the sample tube plug 5 in a horizontal position.

[0139] In a preferred embodiment, the first end of the inclined chute 331 is connected to the conveying track 31, and the second end extends toward the hopper 1. The sample tube plug 5 with the incorrect posture is blocked and falls into the inclined chute 331, and slides down the inclined chute 331 into the hopper 1.

[0140] The orthographic projection of the second end of the inclined chute 331 in the height direction is located within the range of the top opening of the hopper 1, and the sample tube plug 5 on the inclined chute 331 will re-enter the hopper 1.

[0141] This embodiment provides a sample pretreatment system, including the sample tube plug loading device described above. The specific structure of the sample tube plug loading device is exactly the same as described above, and will not be repeated here.

[0142] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A sample tube plug loading device, characterized in that, include: The conveying mechanism (3) includes a conveying track (31) and a screening structure. One end of the conveying track (31) has a feeding port (301) for receiving sample tube plugs (5). The screening structure is set in correspondence with the conveying track (31) and is used to screen out sample tube plugs (5) with incorrect posture from the conveying track (31). The sorting mechanism (4) is located at the other end of the conveying track (31) and has a buffer position (401) for storing sample tube plugs (5). The buffer position (401) is used to receive sample tube plugs (5) from the conveying track (31).

2. The sample tube plug loading device according to claim 1, characterized in that, A baffle plate (32) is provided on the side of the conveying track (31) opposite to the feeding port (301), and the baffle plate (32) extends in the same direction as the conveying track (31). The screening structure includes: a chute (331) and a first stop (332) corresponding to the chute (331). The first end of the chute (331) is connected to the conveying track (31), and the second end extends away from the conveying track (31). The first stop (332) is disposed on the first end surface of the chute (331). The distance between the first stop (332) and the baffle plate (32) is greater than the diameter of the sample tube plug (5) and less than the length of the sample tube plug (5).

3. The sample tube plug loading device according to claim 2, characterized in that, The screening structure also includes a second stop (333), which is disposed on the baffle plate (32) and corresponds to the inclined groove (331). The distance between the second stop (333) and the conveying track (31) is greater than the diameter of the sample tube plug (5) and less than the length of the sample tube plug (5).

4. The sample tube plug loading device according to claim 3, characterized in that, The first stop (332) has a stop surface (3321) and a first guide slope (3322). The stop surface (3321) is perpendicular to the transport direction of the conveying track (31). The second stop (333) has a second guide slope (3331). In the movement direction of the conveying track (31), the first guide slope (3322) is inclined from the chute (331) toward the direction closer to the conveying track (31), and the second guide slope (3331) extends inclined from the baffle plate (32) toward the direction closer to the chute (331).

5. The sample tube plug loading device according to any one of claims 1-4, characterized in that, The sorting mechanism (4) includes a sorting disk (41), and a plurality of buffer positions (401) are arranged at circumferential intervals along the sorting disk (41). The sorting disk (41) is driven to rotate so that the plurality of buffer positions (401) are sequentially connected to the outlet of the conveying track (31).

6. The sample tube plug loading device according to claim 5, characterized in that, The sorting mechanism (4) includes: A support (421) is provided, and the sample tray (41) is mounted on the support (421) via a rotating shaft (411). The third drive wheel (422) is mounted on the bracket (421) via the third drive motor (425); The third driven wheel (423) is coaxially mounted on the rotating shaft (411) with the sample distribution disk (41), and the diameter of the third driven wheel (423) is larger than the diameter of the third driving wheel (422); A third synchronous belt (424) is connected to the third driving pulley (422) and the third driven pulley (423).

7. The sample tube plug loading device according to claim 6, characterized in that, The sorting mechanism (4) includes a buffer structure (43) disposed between the sample tray (41) and the conveying track (31). The sample tube plug (5) passes through the buffer structure (43) and enters the buffer position (401) under the push of external force. When the external force is lost, the sample tube plug (5) stops on the buffer structure (43) and has a clearance gap (432) with the sample tray (41).

8. The sample tube plug loading device according to claim 7, characterized in that, The buffer structure (43) is a support block disposed on the bracket (421), and the support block has a buffer surface (431) flush with the upper surface of the conveying track (31).

9. A sample tube plug loading device, characterized in that, The sample tube plug loading device according to any one of claims 1-8 further includes: a feeding mechanism (2), wherein the discharge end (103) of the feeding mechanism (2) is correspondingly arranged with the feeding port (301) of the conveying track (31).

10. A sample preprocessing system, characterized in that, Includes the sample tube plug loading device as described in claim 9.

Images