Reagent bottle cap opening and closing device and method

Abstract

The invention discloses a reagent bottle cap opening and closing device and method.The reagent bottle cap opening and closing device comprises a base, an X-axis platform, an R-axis platform, a fixing platform and a positioning assembly, the X-axis platform comprises a mounting base, the mounting base is slidably connected with the base, and the mounting base slides in the first linear direction; the R-axis platform comprises a mounting plate and a deflector rod, the mounting plate is connected with the mounting seat, the deflector rod is rotationally connected with the mounting plate, and the deflector rod rotates around a first axis; the fixed platform comprises a supporting seat, the supporting seat is connected with the base, and the supporting seat is provided with an accommodating cavity for accommodating a reagent bottle; and the positioning assembly is arranged to clamp the reagent bottle.

Description

Reagent bottle cover opening and closing device and method Technical Field

[0001] The present application relates to the technical field of opening and closing bottle caps, for example, to a device and method for opening and closing a reagent bottle cap. Background Art

[0002] With the rapid development of life sciences in recent years, consumables such as reagents and reagent bottles have been widely used in in vitro diagnostics (IVD) and other fields. When extracting or packaging reagents from reagent bottles, people need to frequently open and close the reagent bottles to prevent volatilization and crystallization.

[0003] In the prior art, there are two main methods for opening and closing reagent bottle caps: manual opening and closing, which requires manual operation; and automated opening and closing, which uses a rotary mechanism to rotate the cap to remove or replace it. Manual opening and closing requires repetitive manual operation, resulting in a waste of labor resources and hindering automated integration. The rotary opening method is not suitable for flip-top reagent bottles.

[0004] Application Contents

[0005] The present application provides a reagent bottle cover opening and closing device and method, so as to realize automatic opening and closing of the cover of a flip-top reagent bottle and improve operation efficiency.

[0006] The present application embodiment provides a

[0007] Reagent bottle cover opening and closing device, including:

[0008] base;

[0009] An X-axis platform includes a mounting seat, the mounting seat is slidably connected to the base, and the mounting seat slides along a first linear direction;

[0010] The R-axis platform includes a mounting plate and a shift rod, wherein the mounting plate is connected to the mounting seat, the shift rod is rotatably connected to the mounting plate, and the shift rod rotates around a first axis;

[0011] A fixed platform, comprising a support base connected to the base, the support base having an accommodating cavity for accommodating a reagent bottle;

[0012] A positioning assembly is configured to clamp the reagent bottle.

[0013] The present application also provides a reagent bottle cover opening and closing method, which is performed by the above-mentioned reagent bottle cover opening and closing device, including:

[0014] Place the reagent bottle in the accommodating chamber and place the lever in the initial position;

[0015] When opening the bottle cap, the mounting base moves from the first position to the second position, causing the lever to reach the opening position, and the lever rotates in a positive direction around the first axis, from the opening position to the first angle position, driving the bottle cap to open;

[0016] Returning the mounting base from the second position to the first position, and placing the shift lever at the first angle position;

[0017] When closing the bottle cap, the lever continues to rotate in the positive direction around the first axis, from the first angular position to the second angular position, and the mounting seat moves from the first position to the second position, so that the lever reaches the closed position, and the lever rotates in the reverse direction around the first axis, driving the bottle cap to close;

[0018] The mounting seat is returned from the second position to the first position, and the shifting rod is returned to the initial position. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic structural diagram of a reagent bottle in the related art;

[0020] FIG2 is a structural schematic diagram of a reagent bottle cover opening and closing device according to an embodiment of the present application;

[0021] FIG3 is a second structural diagram of a reagent bottle cover opening and closing device provided in an embodiment of the present application;

[0022] FIG4 is a schematic structural diagram of a base and an X-axis platform provided in an embodiment of the present application;

[0023] FIG5 is a partial structural schematic diagram 1 of FIG4 ;

[0024] FIG6 is a second schematic diagram of the partial structure of FIG4 ;

[0025] FIG7 is a schematic structural diagram of an R-axis platform and a positioning assembly provided in an embodiment of the present application;

[0026] FIG8 is a schematic diagram of the structure of FIG7 in another direction;

[0027] FIG9 is a schematic diagram of the exploded structure of the R-axis platform and positioning assembly provided in FIG7 ;

[0028] FIG10 is a schematic structural diagram of an R-axis sensor sheet provided in an embodiment of the present application;

[0029] FIG11 is a schematic structural diagram of a fixed platform and a positioning assembly provided in an embodiment of the present application;

[0030] FIG12 is a schematic diagram of the exploded structure of FIG11;

[0031] FIG. 13 is a cross-sectional view of FIG. 11 .

[0032] In the picture:

[0033] 100, reagent bottle; 101, bottle body; 102, bottle cap; 103, connecting belt;

[0034] 10. Base;

[0035] 20. X-axis platform; 21. Mounting seat; 22. Guide rail; 23. Slider; 241. First motor; 242. First pulley; 243. First synchronous belt; 244. First transmission shaft; 245. C-shaped retaining spring; 25. Fastening plate; 261. X-axis sensor; 262. X-axis photoelectric switch; 27. Limit pin;

[0036] 30. R-axis platform; 300. First axis; 31. Mounting plate; 311. Guide groove; 32. Lever; 321. Limiting surface; 33. Rotating shaft; 34. Adapter plate; 351. Second motor; 352. Second pulley; 353. Second timing belt; 36. Bearing end cap; 371. R-axis sensor; 3711. Notch; 372. R-axis photoelectric switch; 38. Guide rod;

[0037] 40. Fixed platform; 41. Support seat; 411. Accommodating cavity; 42. Support block; 421. Mounting cavity; 43. Limiting block; 431. Limiting groove;

[0038] 50. Positioning assembly; 51. Clamping portion; 511. Pressure rod; 512. Clamping claw; 513. Spring; 514. Gasket; 52. Locking portion; 521. Locking piece; 522. Fixing plate. DETAILED DESCRIPTION

[0039] In the description of this application, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0040] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0041] The technical solution of the present application is further illustrated below with reference to the accompanying drawings and through example implementations.

[0042] The embodiment of the present application provides a kind of reagent bottle opening and closing cover device, can open and close the cover of flip-top reagent bottle.For example, referring to Figure 1, reagent bottle 100 comprises bottle body 101, bottle cap 102 and connecting band 103, bottle cap 102 buckles and covers the top of bottle body 101, and connecting band 103 connects bottle cap 102 and bottle body 101, in case bottle cap 102 falls after opening.It is understandable that connecting band 103 has certain elasticity, can support bottle cap 102 in open state after bottle cap 102 is opened.

[0043] Referring to Figures 2 to 13, the reagent bottle switch cover device includes a base 10, an X-axis platform 20, an R-axis platform 30, a fixed platform 40 and a positioning assembly 50. The X-axis platform 20 includes a mounting seat 21, which is slidably connected to the base 10 and can slide along the first straight line direction; the R-axis platform 30 includes a mounting plate 31 and a shift rod 32, the mounting plate 31 is connected to the mounting seat 21, the shift rod 32 is rotatably connected to the mounting plate 31, and the shift rod 32 can rotate around the first axis 300; the fixed platform 40 includes a support seat 41, the support seat 41 is connected to the base 10, and the support seat 41 has a receiving cavity 411 for accommodating the reagent bottle 100; the positioning assembly 50 can clamp the reagent bottle 100.

[0044] When in use, the reagent bottle 100 is located in the accommodating chamber 411; the lever 32 is located in the initial position; when opening the cover, the mounting seat 21 moves from the first position to the second position, so that the lever 32 reaches the cover opening position, and the lever 32 rotates forwardly around the first axis 300, from the cover opening position to the first angle position, driving the bottle cover 102 to open; the mounting seat 21 returns to the first position from the second position, and the lever 32 is located at the first angle position; when closing the cover, the lever 32 continues to rotate forwardly around the first axis 300, from the first angle position to the second angle position, and the mounting seat 21 moves from the first position to the second position, so that the lever 32 reaches the cover closing position, and the lever 32 rotates reversely around the first axis 300, driving the bottle cover 102 to close.

[0045] By cooperating with the movement of the mounting seat 21 along the first straight line direction and the rotation of the lever 32 around the first axis 300, the lever 32 reaches the open cover position or the closed cover position, and the rotation of the lever 32 around the first axis 300 drives the bottle cap 102 to open or close, thereby realizing automatic opening and closing of the flip-top reagent bottle 100, reducing labor intensity, improving work efficiency, avoiding direct contact between personnel and the reagent in the reagent bottle 100, reducing work risks, and also avoiding contamination of the reagent in the reagent bottle 100.

[0046] The base 10 may be in the shape of a plate or a rectangular parallelepiped, and there is no limitation here, as long as it can support each platform.

[0047] The first straight line direction may be along the X-axis direction.

[0048] The mounting seat 21 is slidably connected to the base 10. For example, the X-axis platform 20 also includes a guide rail 22, a slider 23 and a first drive component. The guide rail 22 is arranged on the base 10, and the guide rail 22 extends along the first straight line direction; the slider 23 is slidably connected to the guide rail 22, and the mounting seat 21 is fixedly connected to the slider 23; the first drive component is arranged on the base 10 and can drive the mounting seat 21 to move.

[0049] The first driving assembly includes a first motor 241 and a first belt transmission assembly. The first belt transmission assembly includes two first pulleys 242 arranged at intervals and a first synchronous belt 243 wound around the two first pulleys 242. A first transmission shaft 244 is rotatably arranged on the base 10. One first pulley 242 is arranged on the first transmission shaft 244, and the other first pulley 242 is arranged on the motor shaft of the first motor 241. The first motor 241 can drive the first pulley 242 to rotate, so that the first synchronous belt 243 rotates. The mounting base 21 is fixedly connected to the first synchronous belt 243, thereby realizing linear movement.

[0050] For example, a fastening plate 25 is provided on the mounting seat 21, and the first synchronous belt 243 is clamped between the fastening plate 25 and the mounting seat 21, and the fastening plate 25 and the mounting seat 21 are locked by screws. A C-shaped retaining ring 245 is provided at the end of the first transmission shaft 244 to limit the first pulley 242.

[0051] An X-axis sensor sheet 261 is provided on the fastening plate 25, and an X-axis photoelectric switch 262 is provided on the base 10. The X-axis photoelectric switch 262 is U-shaped, and the X-axis sensor sheet 261 can move with the mounting base 21. When the X-axis sensor sheet 261 moves into the U-shaped cavity of the X-axis photoelectric switch 262, the X-axis photoelectric switch 262 is triggered, and the moving position of the mounting base 21 is obtained, ensuring that the mounting base 21 accurately reaches the first position. When the mounting base 21 moves in a straight line, the number of rotations of the motor shaft of the first motor 241 is controlled to ensure that the mounting base 21 accurately moves from the first position to the second position. The X-axis photoelectric switch 262 is fixed to the base 10. The working principle of the X-axis photoelectric switch 262 is related art and will not be further described here.

[0052] The X-axis platform 20 also includes two limit pins 27, spaced apart on the base 10. The slider 23 is positioned between the two limit pins 27, and when the slider 23 reaches its limit position, it abuts against the limit pins 27. The two limit pins 27 limit the slider 23, preventing it from falling off the guide rail 22. The two limit pins 27 can be located on the same side of the guide rail 22, or on opposite sides of the guide rail 22, as long as they can abut the slider 23.

[0053] The positioning component 50 may be a cylinder and a claw. The cylinder drives the claw to move, and the claw can press against the reagent bottle 100 to position the reagent bottle 100.

[0054] In this embodiment, the positioning assembly 50 includes a clamping portion 51 and a locking portion 52. The clamping portion 51 is elastically connected to the support base 41 and is located on one side of the accommodating cavity 411. The locking portion 52 is connected to the mounting plate 31, and the locking portion 52 can abut against the clamping portion 51. Because the clamping portion 51 is elastically connected to the support base 41, when the locking portion 52 abuts against the clamping portion 51, the clamping portion 51 can abut against the reagent bottle 100 in the accommodating cavity 411. For example, the clamping portion 51 can abut against the outer peripheral surface of the reagent bottle 100 to position the reagent bottle 100.

[0055] The clamping portion 51 includes a pressure rod 511, a clamping claw 512, and a spring 513. A mounting cavity 421 is provided on one side of the support base 41. The pressure rod 511 is inserted into the mounting cavity 421. The spring 513 is sleeved on the pressure rod 511. A clamping claw 512 is provided at one end of the pressure rod 511. The locking portion 52 can press against the other end of the pressure rod 511, and the clamping claw 512 can press against the outer circumferential surface of the reagent bottle 100. When the locking portion 52 presses against the pressure rod 511, the spring 513 is compressed, causing the clamping claw 512 to press against the reagent bottle 100.

[0056] For example, the clamping jaw 512 is arc-shaped to fit the outer circumference of the reagent bottle 100. A support block 42 is provided on one side of the support base 41. The support block 42 has a mounting cavity 421 formed therein. The support block 42 and the support base 41 can be connected by screws. A gasket 514 is sandwiched between the spring 513 and the support base 41.

[0057] The locking portion 52 may be disposed on the base 10 and slidably connected to the base 10 , so that the locking portion 52 and the clamping portion 51 selectively abut against each other.

[0058] Alternatively, the locking portion 52 includes a locking member 521 and a fixing plate 522, wherein the fixing plate 522 is connected to the mounting plate 31. The locking member 521 is connected to the fixing plate 522, and the locking member 521 can abut the pressure rod 511. The fixing plate 522 is connected to the mounting plate 31, so that the locking portion 52 moves with the mounting plate 31. Since the mounting plate 31 is connected to the mounting seat 21, the mounting seat 21 can slide along the first linear direction, and thus the locking portion 52 can slide along the first linear direction. When the mounting seat 21 moves from the first position to the second position, the lever 32 reaches one side of the bottle cap 102, at which point the locking portion 52 abuts the clamping portion 51, thereby positioning the reagent bottle 100. When the mounting seat 21 moves from the second position to the first position, the lever 32 moves away from the reagent bottle 100, at which point the locking portion 52 disengages from the clamping portion 51. By integrating the locking portion 52 into the mounting plate 31, the locking portion 52 achieves follow-up and improves integration.

[0059] In this embodiment, locking member 521 is a bearing with threads on its outer circumference to increase friction with compression rod 511. Fixing plate 522 has a mounting hole through which the bearing's support shaft passes and is locked with a nut. The mounting hole is an elongated slot, allowing the bearing's position to be adjusted.

[0060] The R-axis platform 30 also includes a rotating shaft 33 and an adapter plate 34. The rotating shaft 33 is rotatably connected to the mounting plate 31 and extends along the first axis 300. The adapter plate 34 is fixedly connected to the rotating shaft 33, and the shift lever 32 is fixedly connected to the adapter plate 34. The rotating shaft 33 can rotate about the first axis 300, thereby driving the shift lever 32 to rotate about the first axis 300 through the adapter plate 34.

[0061] For example, a waist-shaped hole is provided on the adapter plate 34 , and one end of the shifting rod 32 is fixed in the waist-shaped hole, so that the position of the shifting rod 32 can be adjusted.

[0062] The R-axis platform 30 also includes a second drive assembly, which is disposed on the mounting plate 31 and is capable of driving the rotating shaft 33 to rotate. The second drive assembly includes a second motor 351 and a second belt drive assembly. The second belt drive assembly includes two second pulleys 352 spaced apart and a second synchronous belt 353 wound around the two second pulleys 352. One second pulley 352 is disposed on the rotating shaft 33, and the other second pulley 352 is disposed on the motor shaft of the second motor 351. The second motor 351 is capable of driving the second pulley 352 to rotate, thereby rotating the second synchronous belt 353 and, in turn, driving the rotating shaft 33 to rotate.

[0063] A support bearing is provided between the rotating shaft 33 and the mounting plate 31, and one side of the support bearing is positioned by a bearing end cover 36. The support bearing can be a deep groove ball bearing.

[0064] The R-axis platform 30 also includes an R-axis sensor plate 371 and an R-axis photoelectric switch 372. The R-axis sensor plate 371 is fixedly connected to the rotating shaft 33. The R-axis photoelectric switch 372 is arranged on the mounting plate 31. The R-axis photoelectric switch 372 is U-shaped, and a notch 3711 is provided on the R-axis sensor plate 371. The R-axis sensor plate 371 can rotate along with the rotating shaft 33. When the notch 3711 of the R-axis sensor plate 371 rotates into the U-shaped cavity of the R-axis photoelectric switch 372, the R-axis photoelectric switch 372 is triggered, and the rotation angle of the rotating shaft 33 can be obtained, ensuring that the lever 32 is accurately rotated from the cover opening position to the first angle position. When the notch 3711 of the R-axis sensor plate 371 leaves the U-shaped cavity of the R-axis photoelectric switch 372, the R-axis photoelectric switch 372 is triggered again, ensuring that the rotating shaft 33 is accurately rotated from the first angle position to the second angle position. The working principle of the R-axis photoelectric switch 372 is related technology and will not be repeated here.

[0065] For example, the rotating shaft 33 passes through the mounting plate 31 , the R-axis sensing piece 371 is disposed on one side of the mounting plate 31 , and the shifting rod 32 is disposed on the other side of the mounting plate 31 .

[0066] The R-axis platform 30 also includes a guide rod 38. A guide groove 311 is provided on the mounting plate 31. One end of the guide rod 38 extends into the guide groove 311, and the other end of the guide rod 38 is fixedly connected to the adapter plate 34. As the rotating shaft 33 rotates, the guide rod 38 rotates along the guide groove 311. The guide groove 311 acts as a limiter and guide, allowing the lever 32 to stably apply force to the bottle cap 102. It will be appreciated that the guide rod 38 rotates about the first axis 300, and the guide groove 311 is an arc-shaped groove.

[0067] The guide rod 38 and the shifting rod 32 are respectively located on both sides of the rotating shaft 33 to ensure balanced force.

[0068] A limiting surface 321 is provided on the lever 32. When the lever 32 opens or closes the bottle cap, the limiting surface 321 contacts the bottle cap 102 to increase the contact area, thereby ensuring stable opening or closing of the bottle cap.

[0069] The support base 41 is provided with a limit stopper 43, which defines a limit groove 431. The connecting strap 103 between the bottle body 101 and the bottle cap 102 of the reagent bottle 100 can be inserted into the limit groove 431. For example, when the reagent bottle 100 is moved to the accommodating cavity 411, the connecting strap 103 is located in the limit groove 431. The limit groove 431 limits the connecting strap 103, so that the reagent bottle 100 does not rotate.

[0070] The reagent bottle 100 can be shifted by the transfer clamp, which grabs the reagent bottle 100 and places it into the accommodating cavity 411 on the support 41. The transfer clamp is a conventional structure in this field and will not be described separately here.

[0071] The present application also provides a reagent bottle cover opening and closing method, which uses the above-mentioned reagent bottle cover opening and closing device, including:

[0072] The reagent bottle 100 is located in the accommodating cavity 411;

[0073] The lever 32 is located in the initial position;

[0074] When opening the bottle cap, the mounting base 21 moves from the first position to the second position, causing the lever 32 to reach the opening position. The lever 32 then rotates in a positive direction about the first axis 300 from the opening position to the first angle position, driving the bottle cap 102 to open.

[0075] The mounting base 21 returns from the second position to the first position, and the shifting rod 32 is located at the first angle position;

[0076] When closing the bottle cap, the lever 32 continues to rotate in the forward direction around the first axis 300 from the first angular position to the second angular position, and the mounting base 21 moves from the first position to the second position, so that the lever 32 reaches the closed position. The lever 32 then rotates in the reverse direction around the first axis 300, driving the bottle cap 102 to close.

[0077] The mounting seat 21 returns to the first position from the second position, and the shifting rod 32 returns to the initial position.

[0078] When the lever 32 is in its initial position, it can be considered to be in a position between -8° and 0°. During the rotation of the lever 32, the initial position is used as a reference. The first angular position is between 90° and 140°. For example, the first angular position is between 120° and 140°, and the second angular position is between 120° and 140°. It is only necessary to ensure that the second angle is greater than the first angle. The 140° position is the motor's limit position. In this embodiment, the first angular position is 120°, and the second angular position is 140°.

[0079] When opening the cover, after the mounting seat 21 moves from the first position to the second position, not only does it cause the lever 32 to reach the cover opening position, but it also causes the locking portion 52 to press against the clamping portion 51 , thereby limiting the position of the reagent bottle 100 .

[0080] The lever 32 rotates from the opening position to the first angle position, driving the bottle cap 102 to open. In this embodiment, when the rotation angle of the lever 32 is rotated from 0° to 120°, the bottle cap 102 can be opened. During this process, the rotating shaft 33 rotates, driving the adapter plate 34 to rotate, causing the lever 32 and the guide rod 38 to rotate. The guide rod 38 slides in the guide groove 311, and at the same time, the R-axis sensor plate 371 fixed to the rotating shaft 33 rotates. When the notch 3711 of the R-axis sensor plate 371 rotates into the U-shaped cavity of the R-axis photoelectric switch 372, the R-axis photoelectric switch 372 is triggered and outputs a first signal. At this time, the lever 32 reaches the first angle position, and the first signal controls the second motor 351 to stop, that is, the rotating shaft 33 stops rotating.

[0081] After the bottle cap 102 is opened, the pipetting platform injects the reagent into the reagent bottle 100. The pipetting platform is a conventional structure in the art and will not be further described here.

[0082] To close the lid, the lever 32 needs to be located at the rear side of the bottle cap 102, so the lever 32 continues to rotate. In order to avoid interference, the mounting base 21 is first returned from the second position to the first position. At this time, the lever 32 is at the first angle position; during the movement of the mounting base 21, the locking portion 52 is disengaged from the clamping portion 51.

[0083] To close the lid, the lever 32 continues to rotate forward about the first axis 300 from the first angular position to the second angular position. Simultaneously, the R-axis sensing plate 371 fixed to the rotating shaft 33 rotates. When the notch 3711 of the R-axis sensing plate 371 leaves the U-shaped cavity of the R-axis photoelectric switch 372, the R-axis photoelectric switch 372 is triggered again, outputting a second signal. At this point, the lever 32 reaches the second angular position, and the second signal controls the second motor 351 to stop, thereby stopping the rotating shaft 33. In this embodiment, when the rotation angle of the lever 32 rotates from 120° to 140°, it is at the second angular position.

[0084] The mounting base 21 moves from the first position to the second position, causing the lever 32 to reach the lid-closing position. The lever 32 then rotates in the opposite direction about the first axis 300, driving the bottle cap 102 to close. During the movement of the mounting base 21 from the first position to the second position, the locking portion 52 abuts against the clamping portion 51, thereby securing the reagent bottle 100. During the lid-closing process, the reagent bottle 100 will not shift.

[0085] In fact, during the closing process, when the lever 32 has not yet returned to the initial position, the bottle cap 102 has been closed. In this embodiment, when the rotation angle of the lever 32 is rotated from 140° to 5°, the opened bottle cap 102 can be closed.

[0086] After the cover is closed, the mounting base 21 returns from the second position to the first position, and the shifting rod 32 returns to the initial position.

Claims

1. A reagent bottle cover opening and closing device, comprising: base (10); An X-axis platform (20) includes a mounting seat (21), wherein the mounting seat (21) is slidably connected to the base (10), and the mounting seat (21) slides along a first linear direction; An R-axis platform (30) includes a mounting plate (31) and a shifting rod (32), wherein the mounting plate (31) is connected to the mounting seat (21), the shifting rod (32) is rotationally connected to the mounting plate (31), and the shifting rod (32) rotates around a first axis (300); A fixed platform (40) includes a support base (41), wherein the support base (41) is connected to the base (10), and the support base (41) has a receiving cavity (411) for receiving a reagent bottle (100); The positioning assembly (50) is configured to clamp the reagent bottle (100).

2. The reagent bottle cover opening and closing device according to claim 1, wherein: The positioning assembly (50) includes a clamping portion (51) and a locking portion (52), wherein the clamping portion (51) is elastically connected to the support seat (41) and is located on one side of the accommodating cavity (411), and the locking portion (52) is connected to the mounting plate (31), and the locking portion (52) is pressed against the clamping portion (51).

3. The reagent bottle cover opening and closing device according to claim 2, wherein: The clamping portion (51) includes a pressure rod (511), a clamping claw (512) and a spring (513); a mounting cavity (421) is provided on one side of the support seat (41); the pressure rod (511) is inserted into the mounting cavity (421); the spring (513) is sleeved on the pressure rod (511); the clamping claw (512) is provided at the first end of the pressure rod (511); the locking portion (52) is pressed against the second end of the pressure rod (511); and the clamping claw (512) is pressed against the outer peripheral surface of the reagent bottle (100).

4. The reagent bottle cover opening and closing device according to claim 3, wherein: The locking portion (52) includes a locking member (521) and a fixing plate (522), wherein the fixing plate (522) is connected to the mounting plate (31), the locking member (521) is connected to the fixing plate (522), and the locking member (521) abuts against the pressure rod (511).

5. The reagent bottle cover opening and closing device according to claim 4, wherein: The locking member (521) is a bearing, and a thread is provided on the outer peripheral surface of the bearing.

6. The reagent bottle cover opening and closing device according to claim 1, wherein: The R-axis platform (30) further includes a rotating shaft (33) and an adapter plate (34), wherein the rotating shaft (33) is rotatably connected to the mounting plate (31), the rotating shaft (33) extends along the direction of the first axis (300), the adapter plate (34) is fixedly connected to the rotating shaft (33), and the shifting rod (32) is fixedly connected to the adapter plate (34).

7. The reagent bottle cover opening and closing device according to claim 6, wherein: The R-axis platform (30) further includes a guide rod (38), a guide groove (311) is provided on the mounting plate (31), a first end of the guide rod (38) extends into the guide groove (311), and a second end of the guide rod (38) is fixedly connected to the adapter plate (34).

8. The reagent bottle cover opening and closing device according to claim 6, wherein: The R-axis platform (30) further includes an R-axis sensing piece (371) and an R-axis photoelectric switch (372). The R-axis sensing piece (371) is fixedly connected to the rotating shaft (33). The R-axis photoelectric switch (372) is arranged on the mounting plate (31). The R-axis photoelectric switch (372) is U-shaped. A notch (3711) is provided on the R-axis sensing piece (371).

9. The reagent bottle cover opening and closing device according to claim 1, wherein: A limiting block piece (43) is provided on the support seat (41), a limiting groove (431) is provided on the limiting block piece (43), and a connecting belt (103) between the bottle body (101) of the reagent bottle (100) and the bottle cap (102) is inserted into the limiting groove (431).

10. A method for opening and closing a reagent bottle cover, performed by the reagent bottle cover opening and closing device according to any one of claims 1 to 9, comprising: Place the reagent bottle (100) in the accommodating chamber (411), and place the lever (32) in the initial position; When opening the bottle cap, the mounting seat (21) moves from the first position to the second position, so that the lever (32) reaches the opening position, and the lever (32) rotates in a positive direction around the first axis (300), from the opening position to the first angle position, driving the bottle cap (102) to open; Returning the mounting seat (21) from the second position to the first position, and placing the shifting rod (32) at the first angular position; When closing the lid, the lever (32) continues to rotate in the positive direction around the first axis (300), rotating from the first angular position to the second angular position, and the mounting seat (21) moves from the first position to the second position, so that the lever (32) reaches the lid-closing position, and the lever (32) rotates in the negative direction around the first axis (300), driving the bottle cap (102) to close; The mounting seat (21) is returned from the second position to the first position, and the shifting rod (32) is returned to the initial position.

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