CN220853818U

CN220853818U - Batch weighing device

Info

Publication number: CN220853818U
Application number: CN202322487572.4U
Authority: CN
Inventors: 卓力
Original assignee: Imotion Shanghai Product Design Co ltd
Current assignee: Imotion Shanghai Product Design Co ltd
Priority date: 2023-07-07
Filing date: 2023-09-13
Publication date: 2024-04-26
Anticipated expiration: 2033-09-13
Also published as: CN116576950A

Abstract

The utility model provides a batch weighing device. The batch weighing device comprises a base, a sample adding mechanism, a moving mechanism and a weighing mechanism, wherein the sample adding mechanism, the moving mechanism and the weighing mechanism are arranged on the base; the moving mechanism is suitable for supporting the test tube box and driving the test tube box to move so as to align the test tube to be sampled in the test tube box with the sampling mechanism; the sampling mechanism is suitable for adding a reagent into a test tube to be sampled; the weighing mechanism is positioned below the test tube box and comprises a weighing unit and a lifting unit arranged above the weighing unit; the lifting unit is suitable for lifting the test tube to be loaded when the test tube to be loaded is aligned with the loading mechanism; the weighing unit is suitable for weighing the reagent in the test tube to be loaded when the lifting unit lifts the test tube to be loaded. According to the utility model, the test tube box is flexibly moved by the moving mechanism so that test tubes in the test tube box are sequentially aligned with the sampling mechanism, and the weighing mechanism with the lifting function is combined to weigh the reagents in the test tubes, so that batch weighing operation of one or more reagents in one weighing process is realized.

Description

Batch weighing device

Technical Field

The utility model relates to the technical field of reagent distribution and metering, in particular to a batch weighing device.

Background

It is well known that in biochemical experiments, reagents need to be weighed and sampled frequently. However, the conventional weighing device not only requires manual operation, but also has low accuracy and large error. Moreover, since the manual operation is performed, the sample is taken by the sense of a person every time the operation is performed, and thus it may be difficult to achieve an ideal weighing and sampling effect through a plurality of operations.

Although some automatic weighing devices have appeared in recent years, these automatic weighing devices can only perform single weighing of a single reagent in one weighing process, and cannot realize batch weighing operation of one or more reagents, and the working efficiency is low.

Disclosure of utility model

The utility model aims to provide a batch weighing device, which is characterized in that a triaxial movable mechanism is used for flexibly moving a test tube box to enable all test tubes to be loaded in the test tube box to be aligned with a sampling mechanism in sequence, and when all test tubes are aligned with the sampling mechanism respectively, the weighing mechanism with a lifting function is used for weighing the added reagent in the test tubes, so that batch weighing operation of one or more reagents in one weighing process is realized, and further the working efficiency is greatly improved.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

A batch weighing device comprises a base, a sample adding mechanism, a moving mechanism and a weighing mechanism, wherein the sample adding mechanism, the moving mechanism and the weighing mechanism are arranged on the base; the moving mechanism is suitable for supporting the test tube box and driving the test tube box to move so as to align a test tube to be sampled in the test tube box with the sampling mechanism; the sample adding mechanism is suitable for adding a reagent into a test tube to be added; the weighing mechanism is positioned below the test tube box and comprises a weighing unit and a lifting unit arranged above the weighing unit; the lifting unit is suitable for lifting the test tube to be loaded when the test tube to be loaded is aligned with the loading mechanism; the weighing unit is suitable for weighing the reagent in the test tube to be loaded when the lifting unit lifts the test tube to be loaded.

Optionally, the moving mechanism comprises a tray adapted to support the test tube box, a limiting frame supported on the tray and adapted to limit the test tube box, and an X-axis moving unit arranged below the tray and adapted to drive the limiting frame to move left and right; the X-axis moving unit comprises an X-axis motor, an X-axis gear set connected with the X-axis motor, an X-axis screw rod connected with the X-axis gear set, an X-axis screw rod nut in transmission connection with the X-axis screw rod, and a connecting piece arranged on the X-axis screw rod nut; the X-axis screw rod extends along the left-right direction; the tray is provided with an opening which extends along the left-right direction and corresponds to the X-axis screw nut; the upper end of the connecting piece penetrates through the opening and is connected with the limiting frame.

Optionally, the moving mechanism comprises a fixed frame suitable for moving along the up-down direction, a tray suitable for supporting the test tube box, and a Y-axis moving unit suitable for driving the tray to move back and forth; the Y-axis moving unit comprises a Y-axis motor, a Y-axis gear set connected with the Y-axis motor and a rack in transmission connection with the Y-axis gear set; the rack is fixed on the fixing frame along the front-back direction.

Optionally, the moving mechanism further comprises an X-direction first synchronization shaft extending in a left-right direction; the Y-axis moving unit further comprises a synchronous gear and a synchronous rack which are meshed with each other; the left and right of the fixing frames are respectively provided with one fixing frame, one fixing frame is provided with the rack, and the other fixing frame is provided with the synchronous rack; the left end and the right end of the X-direction first synchronous shaft respectively penetrate through two sides of the tray and are respectively and coaxially connected with the Y-axis gear set and the synchronous gear.

Optionally, the moving mechanism further comprises an X-direction second synchronizing shaft extending in the left-right direction; the Y-axis moving unit further comprises a first follow-up gear and a second follow-up gear which are respectively meshed with the rack and the synchronous rack; the left end and the right end of the X-direction second synchronizing shaft respectively penetrate through two sides of the tray and are respectively connected with the first follow-up gear and the second follow-up gear in a coaxial mode.

Optionally, the moving mechanism further comprises a Y-direction synchronizing shaft mounted on the fixing frame; the tray is movably connected with the Y-direction synchronous shaft and is suitable for moving back and forth along the Y-direction synchronous shaft.

Optionally, the moving mechanism is adapted to drive the test tube cassette to descend when the lifting unit lifts the test tube to be loaded, so that the test tube to be loaded is adapted to be at least partially placed in the sampling mechanism.

Optionally, the moving mechanism comprises a fixed frame suitable for moving along the up-down direction, a tray suitable for supporting the test tube box, and a Z-axis moving unit suitable for driving the tray to move up and down; the Z-axis moving unit comprises a Z-axis motor, a Z-axis screw rod in driving connection with the Z-axis motor and a Z-axis screw rod nut in driving connection with the Z-axis screw rod; the Z-axis lead screw extends along the up-down direction; the Z-axis lead screw nut is connected with the tray through the fixing frame.

Optionally, the test tube box comprises at least two fixing cavities for fixing at least two test tubes respectively; each of the at least two fixing cavities is vertically communicated and comprises an upper opening and a lower opening; each test tube of the at least two test tubes is suitable for entering the corresponding fixing cavity from the corresponding upper opening; the lifting unit is suitable for lifting the test tube to be sampled in the corresponding fixed cavity from the corresponding lower opening.

Optionally, the lifting unit comprises an upwardly open lifting groove adapted to lift the test tube to be loaded from below.

Optionally, each test tube in the test tube box is respectively provided with an identification code corresponding to each test tube; the batch weighing device further comprises a code scanner arranged below the test tube box so as to scan the identification codes of the test tubes to be loaded.

Compared with the prior art, the technical scheme of the embodiment of the utility model has the beneficial effects.

For example, the test tube box is flexibly moved by the triaxial movable mechanism, so that each test tube to be loaded in the test tube box is sequentially aligned with the sampling mechanism, and when each test tube is respectively aligned with the sampling mechanism, the added reagent in the test tube is weighed by the weighing mechanism with the lifting function, so that batch weighing operation of one or more reagents in one weighing process is realized, and the working efficiency is greatly improved.

For example, the movement of the cuvette in the X-axis direction, i.e., the left-right direction, the Y-axis direction, i.e., the front-back direction, and the Z-axis direction, i.e., the up-down direction, is independent of each other, and thus the cuvette can be moved simultaneously in the X-axis direction, i.e., the left-right direction, the Y-axis direction, i.e., the front-back direction, and the Z-axis direction, i.e., the up-down direction, which not only achieves flexible movement of the cuvette, but also improves the work efficiency of the movement.

For another example, by arranging the code scanner and controlling the movement of the test tube box by combining the moving mechanism, each test tube to be loaded can be subjected to code scanning operation before loading so as to verify the accuracy of loading weighing information, thereby avoiding loading errors.

Drawings

FIG. 1 is a schematic view of a batch weighing apparatus in accordance with an embodiment of the present utility model;

FIG. 2 is a schematic diagram of an X-axis mobile unit in accordance with an embodiment of the present utility model;

FIG. 3 is a top view of an X-axis mobile unit in an initial state in an embodiment of the present utility model;

Fig. 4 is a sectional view of an X-axis moving unit in an initial state in an embodiment of the present utility model;

FIG. 5 is a top view of an X-axis mobile unit in an operational state according to an embodiment of the present utility model;

FIG. 6 is a cross-sectional view of an X-axis moving unit in an operating state in an embodiment of the present utility model;

FIG. 7 is a schematic diagram of a Y-axis mobile unit in accordance with an embodiment of the present utility model;

FIG. 8 is a side view of a Y-axis mobile unit in an initial state in an embodiment of the present utility model;

FIG. 9 is a side view of a Y-axis mobile unit in an operational state in an embodiment of the present utility model;

FIG. 10 is a schematic diagram of a Z-axis mobile unit in an initial state in an embodiment of the utility model;

FIG. 11 is a side cross-sectional view of the Z-axis moving unit in an initial state in an embodiment of the present utility model;

FIG. 12 is a schematic diagram of a Z-axis mobile unit in an operational state according to an embodiment of the present utility model;

FIG. 13 is a side cross-sectional view of a Z-axis mobile unit in an operational state in an embodiment of the present utility model;

FIG. 14 is a partial cross-sectional view of a batch weighing apparatus in an initial state in an embodiment of the present utility model;

FIG. 15 is a partial cross-sectional view of a batch weighing apparatus in an operational state in accordance with an embodiment of the present utility model;

fig. 16 is a schematic view of a lifting unit in an embodiment of the utility model.

Reference numerals illustrate:

1 a batch weighing apparatus, 10 a base, 20 a sampling mechanism, 31 a tray, 311 a hole, 32 a limit frame, 321 a mounting groove, 322 a screw, 323 a receiving groove, 33 a X-axis moving unit, 331 a X-axis motor, 332X-axis first gear, 333X-axis second gear, 334X-axis screw, 335X-axis screw nut, 336 connector, 337X-axis first synchronizing shaft, 338X-axis second synchronizing shaft, 34 a fixed frame, 35Y-axis moving unit, 352Y-axis first gear, 353Y-axis second gear, 354Y-axis third gear, 355 rack, 356 synchronizing rack, 357 first follower gear, 358 second follower gear, 359Y-axis synchronizing shaft, 36Z-axis moving unit, 361Z-axis motor, 362Z-axis screw, 363Z-axis screw nut, 364 synchronizing screw, 365-axis first synchronizing belt combination, 367 second synchronizing belt combination, 368 third synchronizing belt combination, 369Z-axis synchronizing shaft, 41 a weighing unit, 42 a lifting unit, 421 lifting groove, 50 a fixed frame, 51 a fixed frame, 511 a fixed frame, a lower frame, a test tube 60, a lower frame, and a test tube, a lower frame, a 80.

Detailed Description

In order to make the objects, features and advantageous effects of the present utility model more comprehensible, embodiments accompanied with figures are described in detail below. It is to be understood that the following detailed description is merely illustrative of the utility model, and not restrictive of the utility model. Also, descriptions of the same, similar components in different embodiments, and descriptions of components, features, effects, and the like belonging to the related art may be omitted.

Furthermore, for convenience of description, only some, but not all, structures related to the present utility model are shown in the drawings. Moreover, the use of the same, similar reference numbers in different figures may indicate identical, similar elements in different embodiments.

Referring to fig. 1 and 16, the present utility model provides a batch weighing apparatus 1.

Specifically, the batch weighing apparatus 1 includes a base 10, a sampling mechanism 20 mounted on the base 10, a moving mechanism, and a weighing mechanism. Wherein, the moving mechanism is suitable for supporting the test tube box 50 and driving the test tube box 50 to move so as to align the test tube 60 to be sampled in the test tube box 50 with the sampling mechanism 20; the sampling mechanism 20 is adapted to add reagents to the test tube 60 to be sampled; the weighing mechanism is positioned below the test tube box 50 and comprises a weighing unit 41 and a lifting unit 42 arranged above the weighing unit 41; the lifting unit 42 is adapted to lift the test tube 60 to be loaded when the test tube 60 to be loaded is aligned with the loading mechanism 20; the weighing unit 41 is adapted to weigh the reagent in the test tube 60 to be loaded while the lifting unit 42 lifts the test tube 60 to be loaded.

In a specific implementation, the cuvette box 50 comprises at least two fixing chambers 51 to fix at least two cuvettes 60, respectively, and at least two cuvettes 60 may be added with the same or different reagents, respectively.

In a specific implementation, each of the at least two fixing chambers 51 is penetrated up and down and includes an upper opening 511 and a lower opening 512. Each test tube 60 of the at least two test tubes 60 is adapted to enter the corresponding fixed cavity 51 from the respective upper opening 511; the lifting unit 42 is adapted to lift the test tube 60 to be loaded in the corresponding fixing chamber 51 from the corresponding lower opening 512.

The batch weighing device 1 provided by the utility model is suitable for batch loading and weighing of at least two test tubes 60 in a single weighing process. The batch weighing device 1 is also adapted to batch load and weigh at least two test tubes 60 in a single weighing process when the test tube cassette 50 is adapted to hold at least three test tubes 60.

Specifically, the test tube box 50 capable of placing a plurality of, i.e., at least two test tubes 60, can be flexibly moved by the moving mechanism, so that each test tube 60 in the test tube box 50 is sequentially aligned with the sampling mechanism 20, and when each test tube 60 is respectively aligned with the sampling mechanism 20, the added reagent in the corresponding test tube 60 is sequentially weighed by the weighing mechanism with lifting function, thereby realizing batch weighing operation on one or more reagents in one weighing process, and greatly improving the working efficiency.

In some embodiments, the sampling mechanism 20 may be implemented using a sampling device disclosed in patent publication CN115508574 a.

In other embodiments, the sampling mechanism 20 may also be implemented using the solution provided in patent application 2023105523688.

In still other embodiments, the sampling mechanism 20 may be implemented by any other known technical means in the art, which is not limited herein.

In particular embodiments, at least two test tubes 60 are loaded by the loading mechanism 20 during a single weighing process, and are weighed by the weighing mechanism simultaneously with the loading. For example, there are two test tubes 60 to be loaded requiring batch weighing during one weighing process, and the test tube box 50 is controlled by the moving mechanism to move to align the first test tube 60 to be loaded with the loading mechanism 20, so that the first test tube 60 to be loaded is loaded by the loading mechanism 20, and the first test tube 60 to be loaded is simultaneously weighed by the weighing mechanism; then, the movement of the test tube box 50 is controlled by the movement mechanism so as to enable the first test tube 60 to be loaded to leave the loading mechanism 20; the test tube box 50 is controlled by the moving mechanism to move so as to align the second test tube 60 to be loaded with the sample loading mechanism 20, so that the second test tube 60 to be loaded with the sample is loaded by the sample loading mechanism 20, and meanwhile, the second test tube 60 to be loaded with the sample is weighed by the weighing mechanism; finally, the moving mechanism controls the test tube box 50 to move so as to enable the second test tube 60 to be loaded to leave the loading mechanism 20.

In a specific implementation, all the test tubes 60 to be loaded can be placed in the test tube box 50 in advance, and the batch weighing device 1 sequentially completes loading and weighing of each test tube 60 to be loaded, and after completing all the loading and weighing, all the loaded test tubes 60 are removed from the test tube box 50, so that a batch weighing process is completed.

In a specific implementation, the movement mechanism is adapted to control the movement of the cuvette holder 50 in three directions, respectively. The three directions are the X-axis direction, i.e., the left-right direction, the Y-axis direction, i.e., the front-back direction, and the Z-axis direction, i.e., the up-down direction.

Referring to fig. 2 to 6, the moving mechanism may include a tray 31, a stopper frame 32, and an X-axis moving unit 33. Wherein the tray 31 is movably mounted to the base 10 and adapted to support the cuvette box 50; the limiting frame 32 is supported on the tray 31 and is suitable for limiting the test tube box 50 supported on the tray 31 so as to prevent the test tube box 50 from randomly moving on the tray 31; the X-axis moving unit 33 is disposed below the tray 31 and adapted to drive the limiting frame 32 to move left and right, so that the limiting frame 32 drives the tube cassette 50 to move left and right, so that the test tube 60 to be loaded in the tube cassette 50 is aligned with the sampling mechanism 20 in the X-axis direction, i.e., the left and right direction.

In some embodiments, the X-axis moving unit 33 may include an X-axis motor 331, an X-axis gear set, an X-axis screw 334, and an X-axis screw nut 335. The X-axis motor 331 may be mounted on the base 10 and is in driving connection with the X-axis gear set, the X-axis screw 334 extends along the X-axis direction, i.e., the left-right direction, and is connected with the X-axis gear set, and the X-axis screw nut 335 is sleeved outside the X-axis screw 334 and is in driving connection with the X-axis screw 334.

In some embodiments, the X-axis gear set may include an X-axis first gear 332 and an X-axis second gear 333. Wherein, the first gear 332 of X axis is connected with the output shaft of the motor 331 of X axis coaxially, and is suitable for rotating under the drive of the motor 331 of X axis; the X-axis second gear 333 is coaxially connected with the X-axis screw 334, and is meshed with the X-axis first gear 332 in a vertical plane.

In a specific implementation, the X-axis motor 331 drives the X-axis first gear 332 to rotate, the X-axis first gear 332 drives the X-axis second gear 333 to rotate when rotating, and the X-axis second gear 333 drives the X-axis screw 334 to rotate when rotating, so as to drive the X-axis screw nut 335 in transmission connection with the X-axis screw 334 to move in the X-axis direction, i.e. in the left-right direction, and further drive the limiting frame 32 through the X-axis screw nut 335 to drive the test tube box 50 to move in the X-axis direction, i.e. in the left-right direction.

In some embodiments, the X-axis moving unit 33 may further include a connector 336 mounted to the X-axis lead screw nut 335. Accordingly, the tray 31 is provided with the opening 311 extending in the X-axis direction, i.e., the left-right direction, and corresponding to the X-axis screw nut 335. The upper end of the connecting piece 336 passes through the opening 311 and is connected with the limit frame 32.

In some embodiments, the stop frame 32 may have a mounting slot 321 adapted to receive an upper end of the connector 336, and the upper end of the connector 336 is secured within the mounting slot 321 by a screw 322.

In a specific implementation, the screw 322 may pass through the upper end of the connection member 336 in the X-axis direction, i.e., the left-right direction, and fix the upper end of the connection member 336 to the mounting groove 321 of the limit frame 32.

In a specific implementation, when the X-axis screw nut 335 moves in the X-axis direction, i.e. in the left-right direction, the limiting frame 32 is driven to move by the connecting piece 336 connected to the X-axis screw nut 335 and the limiting frame 32, and the tube box 50 is driven to move in the X-axis direction, i.e. in the left-right direction by the limiting frame 32, so that the tube 60 to be loaded in the tube box 50 moves in the X-axis direction, i.e. in the left-right direction to be aligned with the loading mechanism 20.

In some embodiments, the tube cassette 50 is not directly retained within the stop frame 32, but is retained within the stop frame 32 by the tube cassette holder 70, taking into account the difference in height of the tube 60 in the tube cassette 50.

Specifically, the tube cassette holder 70 may be a holder having a certain height, an upper end thereof adapted to support the tube cassette 50, and an opening therethrough up and down to accommodate the tube 60 in the tube cassette 50 to extend from the top down therethrough.

In a specific implementation, a respective different height of the cassette holder 70 may be selected for different height of the test tubes 60.

In some embodiments, the cartridge holder 70 may have a lower rim 71 extending downwardly along an open inner peripheral side thereof to support the cartridge 50.

Referring to fig. 7 to 9, the moving mechanism further includes a Y-axis moving unit 35 mounted to the base 10. The Y-axis moving unit 35 is adapted to drive the tray 31 to move in the Y-axis direction, i.e., the front-rear direction, so that the cuvette cartridge 50 is driven by the tray 31 to move in the Y-axis direction, i.e., the front-rear direction, so that the cuvette 60 to be loaded in the cuvette cartridge 50 is aligned with the loading mechanism 20 in the Y-axis direction, i.e., the front-rear direction.

In some embodiments, the Y-axis moving unit 35 may include a Y-axis motor, a Y-axis gear set, and a rack 355. Wherein the Y-axis gear set comprises a Y-axis first gear 352, a Y-axis second gear 353 and a Y-axis third gear 354; the Y-axis first gear 352 is coaxially connected with an output shaft of the Y-axis motor, the Y-axis second gear 353 is meshed with the Y-axis first gear 352, and the Y-axis third gear 354 is meshed with the Y-axis second gear 353 and the rack 355 respectively; the Y-axis motor is adapted to drive the Y-axis first gear 352 to rotate, and when the Y-axis first gear 352 rotates, the Y-axis second gear 353 is driven to rotate, and when the Y-axis second gear 353 rotates, the Y-axis third gear 354 is driven to rotate, and when the Y-axis third gear 354 rotates, the Y-axis third gear 354 moves along the rack 355 in the Y-axis direction, i.e., in the front-rear direction.

In some embodiments, the movement mechanism further includes a mount 34 adapted to move in an up-down direction. The rack 355 is fixed to the mount 34 in the Y-axis direction, i.e., the front-rear direction.

In some embodiments, the movement mechanism further includes X-direction synchronization shafts 337, 338 in moving connection with the stop frame 32.

With continued reference to fig. 2, in the embodiment, the X-direction synchronizing shafts 337, 338 are arranged in parallel in the Y-axis direction, i.e., the front-rear direction, and both the X-direction synchronizing shafts 337, 338 extend in the X-axis direction, i.e., the left-right direction. Correspondingly, the limiting frame 32 is respectively provided with a receiving groove 323 at the front end and the rear end, and a bearing is arranged in the receiving groove 323. The two X-direction synchronous shafts 337, 338 respectively pass through bearings at the front and rear ends of the limiting frame 32 and are supported on the limiting frame 32.

In a specific implementation, the X-direction synchronous shafts 337, 338 are slidably connected to bearings, and the limit frame 32 can move left and right along the X-direction synchronous shafts 337, 338 through the bearings.

In implementations, the two X-direction synchronization shafts 337, 338 may be an X-direction first synchronization shaft 337 and an X-direction second synchronization shaft 338, respectively.

In some embodiments, the Y-axis moving unit 35 further includes intermeshing synchronizing gears and synchronizing racks 356. Accordingly, one of the holders 34 is disposed on each of the left and right sides, wherein one of the holders 34 is adapted to mount a rack 355 and the other holder 34 is adapted to mount a rack 356.

In a specific implementation, the tray 31 has left and right side walls disposed on left and right sides, respectively. The left and right ends of the X-direction first synchronizing shaft 337 pass through the left and right side walls of the tray 31, respectively, and are coaxially connected to the Y-axis third gear 354 and the synchronizing gear, respectively.

When the Y-axis driving motor 251 drives the Y-axis third gear 354 to move in the Y-axis direction, i.e., the front-rear direction, along the rack 355, the X-direction first synchronization shaft 337 rotates following the Y-axis third gear 354 and moves in the Y-axis direction, i.e., the front-rear direction, along the rack 355, while driving the tray 31 to move in the Y-axis direction, i.e., the front-rear direction.

In order to maintain the stability of the movement of the tray 31 in the Y-axis direction, i.e., the front-rear direction, the X-direction first synchronizing shaft 337, when rotating following the Y-axis third gear 354 and moving along the rack 355 in the Y-axis direction, i.e., the front-rear direction, drives the synchronizing gear to move synchronously along the synchronizing rack 356 in the Y-axis direction, i.e., the front-rear direction.

In some embodiments, the Y-axis moving unit 35 further includes a first follower gear 357 and a second follower gear 358 that mesh with the rack 355 and the sync rack 356, respectively. The left and right ends of the X-direction second synchronizing shaft 338 pass through both sides of the tray 31 and are coaxially connected to the first follower gear 357 and the second follower gear 358, respectively.

As described above, when the Y-axis driving motor 251 drives the Y-axis third gear 354 to move along the rack 355 in the Y-axis direction, i.e., the front-rear direction, the X-direction first synchronization shaft 337 rotates following the Y-axis third gear 354 and moves along the rack 355 in the Y-axis direction, i.e., the front-rear direction, while driving the tray 31 to move in the Y-axis direction, i.e., the front-rear direction.

When the tray 31 moves in the Y-axis direction, i.e., the front-rear direction, it drives the stopper frame 32 to move synchronously in the Y-axis direction, i.e., the front-rear direction; when the limit frame 32 moves in the Y-axis direction, i.e., the front-back direction, it drives the X-direction second synchronous shaft 338 to synchronously move in the Y-axis direction, i.e., the front-back direction; meanwhile, both ends of the X-direction second synchronizing shaft 338 respectively drive the first follower gear 357 and the second follower gear 358 to move in the Y-axis direction, i.e., the front-rear direction, along the rack 355 and the synchronizing rack 356, respectively. In this way, the movement of the tray 31, the stopper frame 32, and the cuvette box 50 in the Y-axis direction, that is, the front-rear direction can be made more stable.

In some embodiments, the movement mechanism further includes a Y-axis synchronization shaft 359 mounted to the mount 34. In particular implementations, the tray 31 is movably coupled to the Y-axis synchronization shaft 359 and is adapted to move along the Y-axis synchronization shaft 359 in the Y-axis direction, i.e., the fore-aft direction.

By adopting the above technical scheme, the X-axis moving unit 33 and the Y-axis moving unit 35 can respectively move the test tube box 50 in the X-axis direction, i.e. the left-right direction, and the Y-axis direction, i.e. the front-back direction, so that the test tube 60 to be loaded in the test tube box 50 is aligned with the loading mechanism 20 in the vertical direction, and the loading mechanism 20 is convenient to load the test tube 60 to be loaded with samples.

In some embodiments, it is desirable that the test tube 60 to be loaded can extend upwardly into the loading mechanism 20 so that the loading mechanism 20 can accurately load the test tube 60 to be loaded.

As previously described, the weighing mechanism is located below the cuvette 50 and includes a weighing cell 41 and a lifting cell 42 mounted above the weighing cell 41. Wherein the lifting unit 42 is adapted to lift the test tube 60 to be loaded when the test tube 60 to be loaded is aligned with the loading mechanism 20; the weighing unit 41 is adapted to weigh the reagent in the test tube 60 to be loaded while the lifting unit 42 lifts the test tube 60 to be loaded.

In some embodiments, the movement mechanism is further adapted to lower the cuvette cassette 50 when the lifting unit 42 lifts the cuvette 60 to be loaded, such that the cuvette 60 to be loaded is adapted to be at least partially placed in the loading mechanism 20.

When the test tube 60 to be loaded is adapted to be at least partially disposed in the sampling mechanism 20, the test tube cassette 50 and other test tubes 60 therein will not touch the sampling mechanism 20 due to being lowered relative to the test tube 60 to be loaded, thereby facilitating maintenance of normal operation of the sampling mechanism 20.

Referring to fig. 10 to 13, the moving mechanism may further include a Z-axis moving unit 36 adapted to move the tray 31 up and down.

In some embodiments, the Z-axis moving unit 36 may include a Z-axis motor 361, a Z-axis screw 362, and a Z-axis screw nut 363. Wherein the Z-axis lead screw 362 extends in the Z-axis direction, i.e., in the up-down direction; the Z-axis motor 361 is mounted on the base 10 and connected to the Z-axis screw 362 to drive the Z-axis screw 362 to rotate; the Z-axis screw nut 363 is sleeved outside the Z-axis screw 362 and is in driving connection with the Z-axis screw 362 to move in the Z-axis direction, i.e., up and down, by the driving of the Z-axis screw 362.

In a specific implementation, the Z-axis screw nut 363 is connected to the tray 31 through the fixing frame 34, so as to be suitable for driving the tray 31 to move along the Z-axis direction, i.e. in an up-down direction, so that the tray 31 drives the test tube 60 to be loaded in the test tube box 50 to move along the Z-axis direction, i.e. in an up-down direction, and further the test tube 60 to be loaded approaches or gets away from the sampling mechanism 20 along the Z-axis direction, i.e. in an up-down direction.

As described above, one of the holders 34 is adapted to mount the rack 355, the other holder 34 is adapted to mount the rack 356, and the rack 355 and the rack 356 are engaged with the Y-axis third gear 354 and the rack 356, respectively, while the left and right ends of the X-direction first synchronizing shaft 337 are coaxially connected to the Y-axis third gear 354 and the rack 356, respectively, by penetrating the left and right sidewalls of the tray 31, respectively. Thereby, the tray 31 can be connected to the holder 34.

Further, the Z-axis screw nut 363 is mounted on the left fixing frame 34, and is adapted to drive the fixing frame 34 to move in the Z-axis direction, i.e. up and down, so that the tray 31 is driven by the fixing frame 34 to move in the Z-axis direction, i.e. up and down.

In some embodiments, Z-axis movement unit 36 may also include a synchronous lead screw 364, a synchronous lead screw nut 365, a first synchronous pulley belt combination 366, a second synchronous pulley belt combination 367, and a third synchronous pulley belt combination 368.

The synchronous screw 364 is mounted on the right side of the base 10 in the Z-axis direction, i.e., in the up-down direction; the synchronous lead screw nut 365 is mounted on the right-hand mount 34.

The first timing belt assembly 366 includes two timing wheels and timing belts respectively in driving connection with the two timing wheels, and the two timing wheels are respectively connected with the Z-axis motor 361 and the Z-axis screw 362, and the Z-axis motor 361 is adapted to drive the Z-axis screw 363 to rotate through the first timing belt assembly 364.

The second timing belt assembly 367 also includes two timing wheels and timing belts drivingly connected to the two timing wheels, respectively, and the two timing wheels are each engaged with one of the first timing belt assemblies 366 and the third timing belt assembly 368 to transfer rotation from the first timing belt assembly 366 to the third timing belt assembly 368.

The third timing belt assembly 368 also includes two timing wheels and timing belts respectively in driving connection with the two timing wheels, and the two timing wheels are respectively connected with one timing wheel in the second timing belt assembly 367 and the timing screw 364 to transmit rotation to the timing screw 364, so that the timing screw 364 rotates synchronously while the Z-axis screw 362 rotates, and simultaneously drives the timing screw nut 365 to drive the tray 31 to move in the Z-axis direction, i.e., up-down direction, through the right fixing frame 34.

In some embodiments, the Z-axis moving unit 36 may further include a Z-axis synchronizing shaft 369 mounted to the base 10 in a Z-axis direction, i.e., an up-down direction. The fixing frame 34 is inserted through the Z-direction synchronizing shaft 369, and is adapted to move along the Z-axis direction of the Z-direction synchronizing shaft 369, i.e., up and down. In this way, the stability of the tray 31 moving in the Z-axis direction, i.e., up-down direction, by the fixing frame 34 can be ensured.

Referring to fig. 14 and 15, in the present utility model, the cuvette box 50 includes at least two fixing chambers 51 to fix at least two cuvettes 60, respectively, and the same or different reagents may be added to the at least two cuvettes 60, respectively. Meanwhile, each of the at least two fixing chambers 51 is penetrated up and down and includes an upper opening 511 and a lower opening 512.

Each test tube 60 of the at least two test tubes 60 is adapted to be placed in a corresponding fixation cavity 51 from a respective upper opening 511. The lifting unit 42 is adapted to lift the test tube 60 to be loaded in the corresponding holding chamber 51 upwards from the corresponding lower opening 512.

In particular embodiments, the tray 31 further comprises an opening provided in correspondence with the lifting unit 42, so as to allow the lifting unit 42 to extend upwards through the opening, so as to lift the respective test tube 60 to be loaded from the lower opening 512 of the fixed cavity 51 situated above the tray 31.

Each of the fixing chambers 51 in the cuvette box 50 has at least two fixing portions 513; at least two fixing portions 513 are provided around the inner peripheral side of the fixing chamber 51 and adapted to clamp and fix the test tube 60 placed therein.

Referring to fig. 16, in some embodiments, the lifting unit 42 may include a lifting groove 421 opened upward to be adapted to lift the test tube 60 to be loaded from below.

Further, the fixing cavity 51 where the test tube 60 to be loaded is located is adapted to descend along with the test tube box 50 relative to the lifting unit 42, so that the lifting groove 421 and the test tube 60 to be loaded lifted by the same extend above the test tube box 50 relative to the test tube box 50 and other test tubes 60 therein, thereby preventing the test tube box 50 and other test tubes 60 therein from touching the sampling mechanism 20, so as to facilitate maintaining the normal operation of the sampling mechanism 20.

In the present utility model, the lifting unit 42 does not move, and particularly does not move up and down.

By adopting the above technical solution, the test tube box 50 can be moved in the X-axis direction, i.e., the left-right direction, the Y-axis direction, i.e., the front-back direction, and the Z-axis direction, i.e., the up-down direction, by the X-axis moving unit 33, the Y-axis moving unit 35, and the Z-axis moving unit 36, respectively, so that the test tube 60 to be loaded in the test tube box 50 is aligned with the loading mechanism 20, so that the test tube 60 to be loaded is loaded by the loading mechanism 20.

In the present utility model, the movement of the cuvette holder 50 in the X-axis direction, i.e., the left-right direction, the Y-axis direction, i.e., the front-rear direction, and the Z-axis direction, i.e., the up-down direction, is independent of each other, and thereby the cuvette holder 50 can be simultaneously moved in the X-axis direction, i.e., the left-right direction, the Y-axis direction, i.e., the front-rear direction, and the Z-axis direction, i.e., the up-down direction, to improve the working efficiency.

Further, the Z-axis moving unit 36 is further adapted to drive the cuvette box 50 to descend when the lifting unit 42 lifts the cuvette 60 to be loaded, so that the cuvette 60 to be loaded is adapted to be at least partially placed in the loading mechanism 20, thereby better performing accurate loading on the cuvette 60 to be loaded by the loading mechanism 20.

In a specific implementation, the utility model is adapted to weigh the reagents in the test tube 60 to be loaded by means of a weighing unit 41 located below the lifting unit 42.

Specifically, the weighing unit 41 is adapted to weigh the reagent in the test tube 60 to be loaded when the lifting unit 42 lifts the test tube 60 to be loaded.

In some embodiments, the weighing cell 41 may comprise a high-precision balance to weigh the reagent with high precision.

With continued reference to fig. 14 and 15, in some embodiments, each tube 60 is also provided with an identification code in one-to-one correspondence therewith, respectively. Accordingly, the batch weighing apparatus 1 may further include a code scanner 80 disposed above the tray 31 and below the test tube box 50, so as to perform a code scanning operation on the identification code of the test tube 60 to be loaded by the code scanner 80, thereby facilitating verification of the loaded weighing data.

In some embodiments, the identification codes may be respectively disposed at the bottoms of the test tubes 60, and the code scanning portion of the code scanner 80 can be aligned obliquely upward to the bottom of the test tube 60 to be sampled, so as to perform the code scanning operation.

In some embodiments, the scanner 8 does not move. When the code is required to be scanned, the test tube box 50 is controlled to move through the moving mechanism, so that the test tube 60 to be sampled is positioned above the code scanner 80, and the code scanning operation is conveniently carried out on the test tube 60 to be sampled through the code scanner 80.

In a specific implementation, the code scanner 8 may be disposed under the sampling mechanism 20, so that the test tube 60 to be sampled is scanned after being aligned with the sampling mechanism 20 and before being sampled, so that the sample is sampled after the sample weighing information is verified to be correct.

For example, N test tubes 60 are provided within the test tube cassette 60, and the N test tubes 60 are identified as N ₁、N₂、N₃……N₆₀, respectively. When a batch weighing operation is required for the N ₂、N₃ test tube 60 and 3g of magnesium sulfate powder is required for the N ₂ test tube 60 and 2g of sodium chloride powder is required for the N ₃ test tube 60, the N ₂ test tube 60 can be moved to the lower side of the sample adding mechanism 20 and scanned by the scanner 80 to verify whether the test tube 60 to be added currently is the N ₂ test tube and whether the reagent in the sample adding mechanism 20 is the magnesium sulfate powder and whether the quantity to be added is 3g, the sample adding weighing operation can be started after the data information is verified to be correct, the N ₃ test tube 60 can be moved to the lower side of the sample adding mechanism 20 after the sample adding operation of the N ₂ test tube 60 is finished and scanned by the scanner 80 to verify whether the test tube 60 to be added currently is the N ₃ and whether the reagent in the sample adding mechanism 20 is the sodium chloride powder and whether the quantity to be added is 2g, and the sample adding weighing operation can be started after the data information is verified to be correct.

By adopting the technical scheme, the accurate batch sample addition and weighing of the same or different reagents can be carried out on at least two test tubes 60 in one weighing process.

Although specific embodiments of the utility model have been described above, these embodiments are not intended to limit the scope of the disclosure, even where only a single embodiment is described with respect to a particular feature. The characteristic examples provided in the present disclosure are intended to be illustrative, not limiting, unless stated differently. In practice, the technical features of one or more dependent claims may be combined with the technical features of the independent claims in any appropriate manner and not merely in the specific combinations enumerated in the claims, where technically possible, depending on the actual requirements.

Although the present utility model is disclosed above, the present utility model is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model, and the scope of the utility model should be assessed accordingly to that of the appended claims.

Claims

1. A batch weighing device (1) is characterized by comprising a base (10), and a sample adding mechanism (20), a moving mechanism and a weighing mechanism which are arranged on the base (10); the moving mechanism is suitable for supporting the test tube box (50) and driving the test tube box (50) to move so as to align a test tube (60) to be loaded in the test tube box (50) with the loading mechanism (20); the loading mechanism (20) is suitable for adding reagents to a test tube (60) to be loaded; the weighing mechanism is positioned below the test tube box (50) and comprises a weighing unit (41) and a lifting unit (42) arranged above the weighing unit (41); the lifting unit (42) is adapted to lift the test tube (60) to be loaded when the test tube (60) to be loaded is aligned with the loading mechanism (20); the weighing unit (41) is adapted to weigh the reagent in the test tube (60) to be loaded while the lifting unit (42) lifts the test tube (60) to be loaded.

2. Batch weighing device (1) according to claim 1, characterized in that the movement mechanism comprises a tray (31) adapted to support the test tube box (50), a limit frame (32) supported on the tray (31) and adapted to limit the test tube box (50), and an X-axis movement unit (33) arranged below the tray (31) and adapted to drive the limit frame (32) to move left and right; the X-axis moving unit (33) comprises an X-axis motor (331), an X-axis gear set connected with the X-axis motor (331), an X-axis screw (334) connected with the X-axis gear set, an X-axis screw nut (335) in transmission connection with the X-axis screw (334), and a connecting piece (336) arranged on the X-axis screw nut (335); the X-axis screw rod (334) extends along the left-right direction; the tray (31) is provided with an opening (311) which extends along the left-right direction and corresponds to the X-axis screw nut (335); the upper end of the connecting piece (336) penetrates through the opening (311) to be connected with the limiting frame (32).

3. Batch weighing device (1) according to claim 1, characterized in that the movement mechanism comprises a fixed frame (34) adapted to move in up and down direction, a tray (31) adapted to support the test tube box (50), and a Y-axis movement unit (35) adapted to drive the tray (31) to move back and forth; the Y-axis moving unit (35) comprises a Y-axis motor, a Y-axis gear set connected with the Y-axis motor and a rack (355) in transmission connection with the Y-axis gear set; the rack (355) is fixed to the mount (34) in the front-rear direction.

4. A batch weighing device (1) according to claim 3, characterized in that the moving mechanism further comprises an X-direction first synchronization shaft (337) extending in a left-right direction; the Y-axis moving unit (35) further comprises a synchronous gear and a synchronous rack (356) which are meshed with each other; the left and right of the fixing frames (34) are respectively provided with one fixing frame (34) provided with the rack (355), and the other fixing frame (34) is provided with the synchronous rack (356); the left and right ends of the X-direction first synchronous shaft (337) respectively pass through the two sides of the tray (31) and are respectively and coaxially connected with the Y-axis gear set and the synchronous gear.

5. Batch weighing device (1) according to claim 4, characterized in that the movement mechanism further comprises an X-direction second synchronizing shaft (338) extending in the left-right direction; the Y-axis moving unit (35) further includes a first follower gear (357) and a second follower gear (358) respectively engaged with the rack (355) and the rack-in-gear (356); the left and right ends of the X-direction second synchronizing shaft (338) pass through the two sides of the tray (31) respectively and are coaxially connected with the first follower gear (357) and the second follower gear (358) respectively.

6. A batch weighing device (1) as claimed in claim 3, wherein the movement mechanism further comprises a Y-axis synchronization shaft (359) mounted to the mount (34); the tray (31) is movably connected to the Y-axis (359) and is adapted to move back and forth along the Y-axis (359).

7. Batch weighing device (1) according to claim 1, characterized in that the movement mechanism is adapted to bring the test tube cassette (50) down when the lifting unit (42) lifts the test tube (60) to be loaded, so that the test tube (60) to be loaded is adapted to be at least partially placed in the loading mechanism (20).

8. Batch weighing device (1) according to claim 1 or 7, characterized in that the movement mechanism comprises a fixed frame (34) adapted to move in an up-and-down direction, a tray (31) adapted to support the test tube cassette (50), and a Z-axis movement unit (36) adapted to drive the tray (31) to move up-and-down; the Z-axis moving unit (36) comprises a Z-axis motor (361), a Z-axis screw (362) in driving connection with the Z-axis motor (361), and a Z-axis screw nut (363) in driving connection with the Z-axis screw (362); the Z-axis screw rod (362) extends in the up-down direction; the Z-axis lead screw nut (363) is connected with the tray (31) through the fixing frame (34).

9. Batch weighing device (1) according to claim 1, characterized in that the test tube box (50) comprises at least two fixing chambers (51) for fixing at least two test tubes (60) respectively; each of the at least two fixing cavities (51) is vertically penetrated and comprises an upper opening (511) and a lower opening (512); each test tube (60) of said at least two test tubes (60) is adapted to enter a corresponding fixed cavity (51) from a respective upper opening (511); the lifting unit (42) is adapted to lift the test tube (60) to be sampled in the corresponding fixed cavity (51) from the corresponding lower opening (512).

10. Batch weighing device (1) according to claim 9, characterized in that the lifting unit (42) comprises an upwardly open lifting groove (421) adapted to lift the test tube (60) to be loaded from below.

11. Batch weighing device (1) according to claim 1, characterized in that each test tube (60) in the test tube box (50) is provided with an identification code in one-to-one correspondence therewith, respectively; the batch weighing device (1) further comprises a code scanner (80) arranged below the test tube box (50) so as to scan the identification codes of the test tubes (60) to be loaded.