A fully automatic pipetting workstation

Abstract

The present invention discloses a fully automatic pipetting workstation, which belongs to the technical field of enzymology or microbiology devices. The workstation comprises a shell, a robotic arm for performing pipetting operations is installed in the shell, and the shell is provided with: a carrying component, a storage component and a driving component. The carrying component is movably installed in the shell, and the carrying component can be moved to a first position and a second position in the shell. The carrying component is provided with a carrying bracket, and the carrying bracket is used to place a box of gun tips to be used, so as to cooperate with the robotic arm to perform pipetting operations; the storage component is fixedly installed in the shell, and the number of the storage components is at least one group, and the storage component is used to store discarded gun tip boxes and boxes of gun tips to be used. The fully automatic pipetting workstation, by providing a storage component and movably setting the carrying component, can automatically replenish the gun tips on the carrying component after they are consumed, without requiring the robotic arm to perform operations such as box stacking. The automation level is high and the operation is more convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of enzymology or microbiology devices, and in particular relates to a full-automatic liquid transfer workstation. Background Art

[0002] Liquid handling stations are often used in microbial culture and passage, metabolite detection, or other analyses. They can precisely pipette a fixed amount of culture medium into a culture vessel, providing a stable nutritional environment for microbial growth. They can also extract metabolites from microbial fermentation broth for subsequent analysis and testing. Liquid handling stations have extensive and important applications in the fields of enzymology and microbiology.

[0003] Although the current pipetting workstation has a high degree of automation and can basically replace manual labor with a robotic arm to perform operations such as taking and placing gun tips and transporting culture plates, due to the high consumption of gun tips, the pipetting workstation not only needs to reserve enough space to install gun tip boxes, resulting in a waste of space, but also needs to control the robotic arm to replenish new gun tip boxes after the gun tips are consumed, which is inefficient.

[0004] Currently, patent document CN115074232A discloses a fully automated pipetting workstation that stacks tip boxes together. While this method increases the number of tip boxes available, when the tips in the topmost box are used up, a robotic arm must be used to remove the discarded tip box and either transport it outside the workstation or stack it in another cell. This process not only requires switching the robotic arm's operating mode but also interrupts the robot's original operation, making the experimental process less coherent and affecting work efficiency.

[0005] To this end, we proposed a fully automatic pipetting workstation to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to solve the problems in the prior art of limited storage quantity of stacked boxes and complicated operation, and to propose a fully automatic pipetting workstation.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A fully automatic liquid transfer workstation comprises a housing, wherein a mechanical arm for performing liquid transfer operations is installed in the housing, and wherein the housing is provided with:

[0009] A carrying assembly is movably mounted within the housing and is capable of moving between a first position and a second position within the housing. A carrying bracket is provided on the carrying assembly, and the carrying bracket is used to place a ready-to-use gun tip box to cooperate with the robotic arm for pipetting operations;

[0010] A storage assembly, the storage assembly is fixedly installed in the housing, the number of the storage assembly is at least one group, and the storage assembly is used to store discarded gun tip boxes and unused gun tip boxes;

[0011] A driving assembly is used to drive the carrying assembly to move back and forth between a first position and a second position. When the carrying assembly is in the first position, it can cooperate with the robotic arm; when the carrying assembly is in the second position, it can cooperate with the storage assembly to transfer the discarded gun tip box on the carrying assembly to the storage assembly, and transfer the standby gun tip box on the storage assembly to the carrying assembly.

[0012] Preferably, the driving assembly includes a turntable, which is rotatably mounted on the inner bottom surface of the shell, and the bearing assembly is mounted at a non-center position of the turntable; the storage assembly is arranged directly above the turntable, so that the bearing assembly can move directly below the storage assembly when the turntable rotates.

[0013] Preferably, the storage assembly includes a first storage plate and a second storage plate, and the first storage plate and the second storage plate are used to store the standby gun tip box and the discarded gun tip box, respectively. The first storage plate and the second storage plate are provided with a through-hole, and the through-hole can accommodate the discarded gun tip box and the standby gun tip box to pass through the first storage plate and the second storage plate up and down. A limiting member is provided above the through-hole, and the limiting member is used to fix or loosen the discarded gun tip box and the standby gun tip box.

[0014] Preferably, the limiting member includes a fixed box, a first support block is provided in the fixed box, a hydraulic cylinder is provided in the fixed box for driving the first support block to move horizontally, and a second support block is provided on the supporting bracket. The first support block and the second support block can act on the discarded gun tip box and the standby gun tip box simultaneously or separately.

[0015] Preferably, the bearing assembly includes a rotating disk, which is rotatably mounted on the upper end of the rotating disk. A lifting platform is provided at the center of the rotating disk. A telescopic cylinder for driving the lifting platform to move up and down is installed on the upper end of the rotating disk. The number of the bearing brackets is two groups, and the two groups of bearing brackets are symmetrically mounted on both sides of the lifting platform.

[0016] Preferably, a lifting bar is fixedly connected to a side of the supporting bracket close to the lifting platform, and the lifting bar is slidably mounted on the lifting platform. A driving unit is mounted on the lifting platform, and the driving unit is used to drive the lifting bar to slide along the vertical direction.

[0017] Preferably, a sliding groove running through the upper and lower parts is provided on the lifting platform, and a sliding protrusion is fixedly connected to the side wall of the lifting bar, and the sliding protrusion is slidably arranged in the sliding groove.

[0018] Preferably, the driving unit includes a motor, an output end of the motor is connected to a gear, a rack is provided on the side wall of the lifting bar, and the gear and the rack are meshed with each other.

[0019] Preferably, the height of the first storage plate is lower than that of the second storage plate, the number of the driving units is one group, and the gears are simultaneously engaged with the racks on both sides, so that when one group of the supporting brackets moves upward, the other group of the supporting brackets moves downward.

[0020] Preferably, a support seat is fixedly connected to the center of the upper end of the rotating disk, and when the telescopic cylinder is in a shortened state, the lifting platform acts on the upper end of the support seat.

[0021] To sum up, the technical effects and advantages of the present invention are as follows: the fully automatic pipetting workstation, by setting up a storage component and movably setting the carrying component, when the gun tips on the carrying component are consumed, they can be automatically replenished from the storage component, without the need for a robotic arm to perform operations such as stacking boxes, has a high degree of automation and is more convenient to operate.

[0022] By setting up a carrying component that can be lifted and rotated, it can be more adapted to the operation of the robotic arm and meet more operational requirements. In addition, two carrying brackets are provided on the carrying component, and the positions of the two carrying brackets can be interchanged by rotating the carrying component, thereby making it more convenient to recycle discarded gun tip boxes and replenish new standby gun tip boxes.

[0023] Finally, by setting up a linkage structure of gears and racks, the recovery and replenishment processes of the gun tip box can be carried out synchronously, thereby further improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 Schematic diagram of the positional relationship among the carrying assembly, storage assembly, and driving assembly in the present invention;

[0026] Figure 3 Schematic diagram of the movement trajectory of the carrier assembly in the present invention;

[0027] Figure 4 It is a structural diagram of the storage component in the present invention;

[0028] Figure 5 It is a structural schematic diagram of the load-bearing component in the present invention;

[0029] Figure 6 for Figure 5 A in the figure shows the enlarged structural diagram;

[0030] Figure 7 The working state of the present invention is shown as follows Figure 1 ;

[0031] Figure 8 The working state of the present invention is shown as follows Figure 2 ;

[0032] Figure 9 The working state of the present invention is shown as follows Figure 3 ;

[0033] Figure 10 The working state of the present invention is shown as follows Figure 4 ;

[0034] Figure 11 The working state of the present invention is shown as follows Figure 5 .

[0035] In the figure: 1. Housing; 2. Robotic arm; 3. Drive assembly; 4. Carrying assembly; 5. Storage assembly;

[0036] 31. Turntable; 41. Rotating plate; 42. Lifting platform; 421. Slideway; 43. Telescopic cylinder; 44. Support base; 451. Lifting bar; 4511. Sliding ridge; 4512. Rack; 452. Support bracket; 453. Second support block; 46. Drive unit; 461. Gear;

[0037] 51. First storage plate; 52. Second storage plate; 53. Through-hole; 54. Positioning member; 541. Fixing box; 542. First support block; 55. Clearance groove;

[0038] 61. Discarded gun tip box; 62. Ready-to-use gun tip box; 611. Second track; 621. First track. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0040] like Figures 1-11 As shown, a fully automatic pipetting workstation includes a shell 1, in which a mechanical arm 2 for performing pipetting operations is installed. The shell 1 is provided with: a carrying component 4, a storage component 5 and a driving component 3.

[0041] The carrying component 4 is movably installed in the shell 1, the storage component 5 is fixedly installed in the shell 1, the carrying component 4 can move to the first position and the second position in the shell 1, and the driving component 3 is used to drive the carrying component 4 to move back and forth between the first position and the second position.

[0042] When the carrier assembly 4 is in the first position, it can cooperate with the robotic arm 2. In other words, the robotic arm 2 always removes the gun tip from the carrier assembly 4 at the first position. Compared to the existing method of distributing gun tip boxes in various locations, which requires the robotic arm 2 to plan its path based on gun tip consumption, the robotic arm 2 in this embodiment always removes the gun tip from a fixed point, making path planning simpler.

[0043] When the carrying assembly 4 is in the second position, it can cooperate with the storage assembly 5. That is to say, the storage assembly 5 is fixedly installed at the second position, and when the carrying assembly 4 moves to the second position, it corresponds to the position of the storage assembly 5. The discarded gun tip box 61 on the carrying assembly 4 is transferred to the storage assembly 5, and the standby gun tip box 62 on the storage assembly 5 is transferred to the carrying assembly 4. In this way, there are always standby gun tip boxes 62 for selection on the carrying assembly 4, and the reserve of standby gun tip boxes 62 is sufficient to meet the needs of longer experimental cycles. The robotic arm 2 does not need to participate in the process of removing the discarded gun tip boxes 61 and placing the standby gun tip boxes 62, so the robotic arm 2 does not need to replace the operating part back and forth, which is more efficient and easier to operate.

[0044] More specifically, a carrying bracket 452 is provided on the carrying assembly 4 , and the carrying bracket 452 is used to place the ready-to-use gun tip box 62 to cooperate with the robot arm 2 to perform pipetting operations.

[0045] The number of storage assemblies 5 is at least one, and the storage assembly 5 is used to store discarded gun tip boxes 61 and standby gun tip boxes 62. The standby gun tip box 62 refers to a gun tip box containing gun tips to be used, and the discarded gun tip box 61 refers to a gun tip box with gun tips completely removed. These gun tip boxes are all stacked in a stacked manner, capable of storing a large number of gun tip boxes by stacking them up and down. At the same time, to improve stability, the top and bottom ends of the gun tip boxes are also provided with a locking mechanism, such as a locking groove or a locking protrusion. Under the action of the locking groove and the locking protrusion, adjacent gun tip boxes are laterally limited to prevent them from tipping over.

[0046] The drive assembly 3 includes a turntable 31, which is rotatably mounted on the inner bottom surface of the housing 1. The housing 1 is provided with an element for driving the turntable 31 to rotate, such as a motor or a hydraulic cylinder. The support assembly 4 is installed at a non-center position of the turntable 31. More specifically, the support assembly 4 is installed near the edge of the turntable 31. When the turntable 31 rotates, it can drive the support assembly 4 to change position. The storage assembly 5 is arranged directly above the turntable 31. More specifically, a through-hole is provided in the middle of the turntable 31, and a fixed shaft 32 is provided within the through-hole. The lower end of the fixed shaft 32 is fixedly mounted on the inner bottom surface of the housing 1. One end of the storage assembly 5 is fixedly connected to the housing 1, and the other end is fixedly connected to the fixed shaft 32 to enhance its bearing strength. This allows the support assembly 4 to move directly below the storage assembly 5 when the turntable 31 rotates.

[0047] like Figure 3 As shown, in this embodiment, there are three groups of storage assemblies 5, equidistantly spaced about the center of the turntable 31. There are two groups of support brackets 452, symmetrically mounted on either side of the lifting platform 42. The storage assembly 5 includes a first storage plate 51 and a second storage plate 52, which are used to store ready-to-use gun tip boxes 62 and discarded gun tip boxes 61, respectively. As the turntable 41 rotates, the positions of the two support brackets 452 can be swapped. One support bracket 452 is positioned near the center of the turntable 31 and rotates about a first trajectory 621 as the turntable 31 rotates. The other support bracket 452 is positioned away from the center of the turntable 31 and rotates about a second trajectory 611. This ensures that all ready-to-use gun tip boxes 62 are located on the first trajectory 621, and all discarded gun tip boxes 61 are located on the second trajectory 611. That is to say, the position directly below each storage assembly 5 is the second position, and the carrying assembly 4 moves to the second position so that the carrying assembly 4 can dock with each storage assembly 5.

[0048] The first and second storage plates 51, 52 are provided with through-holes 53 capable of accommodating a discarded tip box 61 and a standby tip box 62, extending vertically through the first and second storage plates 51, 52. A stopper 54 is provided above the through-holes 53 for securing or releasing the discarded tip box 61 and the standby tip box 62. The standby tip box 62 and the discarded tip box 61 are stacked and positioned at the upper ends of the first and second storage plates 51, 52, respectively. The stopper 54 secures or releases the standby tip box 62, allowing the standby tip box 62 to pass downward through the through-holes 53 and be positioned on the support bracket 452, while the discarded tip box 61 passes upward through the through-holes 53 and is retrieved onto the second storage plate 52.

[0049] The stopper 54 comprises a fixed box 541, which houses a first support block 542. This box also houses a hydraulic cylinder for horizontally moving the first support block 542. Two sets of stoppers 54 are arranged opposite each other on the front and rear sides of the through-hole 53, so that the two first support blocks 542 are located on the front and rear sidewalls of the through-hole 53, respectively, and can move relative to each other, moving the two first support blocks 542 closer together or further apart. The support bracket 452 is provided with a second support block 453. Two second support blocks 453 are also provided, one located near the center of the support assembly 4 and one located further away from the center. When the support assembly 4 is in the second position, the two second support blocks 453 are located on either side of the through-hole 53. In this application, the bottom of the gun tip box is provided with two sets of support slots, corresponding to the first support blocks 542 and the second support blocks 453, respectively. The two first support blocks 542 can extend and retract horizontally to support or separate one set of support slots. The two second support blocks 453 can act on another set of support grooves, providing support from below. The first support block 542 and the second support block 453 can act simultaneously or separately on the discarded tip box 61 and the ready-to-use tip box 62. Therefore, the cooperation between the first support block 542 and the second support block 453 enables the tip box to be transferred back and forth between the carrier assembly 4 and the storage assembly 5.

[0050] The specific structure of the bearing assembly 4 is as follows:

[0051] The support assembly 4 includes a rotating disk 41, which is rotatably mounted on the upper end of the turntable 31. A rotating groove is provided near the edge of the upper end of the turntable 31, within which the rotating disk 41 is rotatably mounted. The groove houses a component for driving the turntable 31, such as a motor or hydraulic cylinder, to rotate the rotating disk 41 about its axis. A lifting platform 42 is located at the center of the rotating disk 41. This allows the height of the support bracket 452 to be adjusted to better fit the robotic arm 2, enabling the robotic arm 2 to pick up gun tips at a selectable height. Telescopic cylinders 43 are mounted on the upper end of the rotating disk 41 to drive the lifting platform 42 up and down. Two sets of telescopic cylinders 43 are provided, one on each side of the lifting platform 42. These cylinders can be hydraulic, pneumatic, or electric cylinders. To enhance stability, a support base 44 is fixedly connected to the center of the upper end of the rotating disk 41. When the telescopic cylinders 43 are in the shortened position, the lifting platform 42 acts on the upper end of the support base 44.

[0052] When the lifting platform 42 rises or falls, it can also move the second support block 453 up and down. Therefore, the horizontally movable first support block 542 and the vertically movable second support block 453 can be used together to transfer the gun tip boxes. It should be noted that the lifting and lowering of the supporting brackets 452 is based on the movement of the lifting platform 42, so the second support blocks 453 located on different supporting brackets 452 will rise and fall simultaneously. However, since the movement directions of the second support blocks 453 are not synchronized during the recovery and arrangement of the discarded gun tip boxes 61 and the unused gun tip boxes 62, the operation can be somewhat cumbersome.

[0053] To further address the aforementioned issues, a lifting bar 451 is fixedly connected to the side of the supporting bracket 452 near the lifting platform 42. To enhance stability, two lifting bars 451 are provided, slidably mounted on the lifting platform 42. A drive unit 46 is mounted on the lifting platform 42, which drives the lifting bars 451 in a vertical direction. In other words, in this embodiment, by providing the lifting bars 451 as a secondary lifting drive mechanism, driven by the drive unit 46, the two supporting brackets 452 can be independently raised and lowered, reducing unnecessary operations. Furthermore, the provision of a dual-travel lifting mechanism improves operational precision.

[0054] A slide groove 421 is provided on the lifting platform 42, which runs through the lifting bar 451 from top to bottom. A sliding protrusion 4511 is fixedly connected to the side wall of the lifting bar 451. The sliding protrusion 4511 is slidably set in the slide groove 421, and the length of the slide groove 421 is not less than 3 cm to improve the limiting effect and prevent the lifting bar 451 from tilting. Furthermore, the friction between the sliding protrusion 4511 and the side wall of the slide groove 421 can be increased by embedding rubber strips.

[0055] Furthermore, the first and second storage plates 51, 52 are provided with clearance slots 55, allowing the lifting bars 451 to pass through the clearance slots 55, thereby preventing interference between the lifting bars 451 and the first and second storage plates 51, 52. Furthermore, the first and second storage plates 51, 52 can be integrally formed using a bending process. The other end of the first storage plate 51 is bent downward and fixedly connected to the housing 1, while the other end of the second storage plate 52 is fixedly connected to the fixed shaft 32.

[0056] The drive unit 46 includes a motor, the output of which is connected to a gear 461. A rack 4512 is provided on the sidewall of the lifting bar 451. Both the lifting bar 451 and the rack 4512 are arranged vertically. Gear 461 and rack 4512 mesh with each other. To prevent rack 4512 from falling due to gravity, the motor can be an electromagnetic self-locking motor. Alternatively, a worm gear transmission can be used between the motor output and gear 461, utilizing the worm gear to achieve a self-locking effect.

[0057] As a further optimization, in order to reduce the equipment cost of the motor and optimize the operating steps. The height of the first storage plate 51 is lower than that of the second storage plate 52, and the height difference between the two is equal to the height of a gun tip box. In this way, when a discarded gun tip box 61 to be recycled is placed on one of the supporting brackets 452, the other supporting bracket 452 is in an unloaded state. As the lifting platform 42 moves upward, the discarded gun tip box 61 can be made to contact the lowest discarded gun tip box 61 on the second storage plate 52, and the second support block 453 on the other side supporting bracket 452 can be made to contact the lowest standby gun tip box 62 on the first storage plate 51. In other words, by setting the height of the first storage plate 51 and the second storage plate 52, the height difference between the supporting brackets 452 on both sides can be eliminated, so that when the lifting platform 42 moves upward, the supporting brackets 452 on both sides can act on the gun tip box above at the same time.

[0058] The drive unit 46 is provided in a set, and the gear 461 engages with the racks 4512 on both sides simultaneously. When the gear 461 rotates in one direction, it drives the two racks 4512 in opposite directions. As one set of support brackets 452 moves upward, the other set of support brackets 452 moves downward. Therefore, when the lifting platform 42 moves upward, the discarded tip box 61 on the carrier assembly 4 contacts the discarded tip box 61 on the storage assembly 5, and the second support block 453 on the other side of the carrier assembly 4 contacts the standby tip box 62 on the storage assembly 5. The stopper 54 is controlled to retract the first support block 542. The gear 461 is then controlled to rotate, causing the racks on both sides to move upward and downward, respectively, moving the discarded tip box 61 to the upper side of the through-hole 53 and the standby tip box 62 to the lower side of the through-hole 53. Subsequently, the first support block 542 is extended. This allows the tip boxes to be transferred between the carrier assembly 4 and the storage assembly 5, achieving an automated operation process.

[0059] In addition, the two sets of racks 4512 are simultaneously engaged with the same gear 461, which can balance the weight and offset part of the gravity.

[0060] Here’s how it works:

[0061] In the initial state Figure 3 As shown, the carrier assembly 4 is in the first position, and the robot arm 2 can take the gun tips from the carrier assembly 4. When the gun tips on the carrier assembly 4 are used up, the discarded gun tip box 61 is located on the left side of the carrier assembly 4, and the drive turntable 31 rotates. The carrier assembly 4 moves to the second position, that is, directly below any storage assembly 5, as shown in FIG. Figure 7Then, the telescopic cylinder 43 is controlled to extend, and the lifting platform 42 moves upward, so that the discarded gun tip box 61 on the left side contacts the discarded gun tip box 61 on the storage assembly 5, and the second support block 453 on the right side contacts the standby gun tip box 62 on the storage assembly 5, as shown. Figure 8 shown.

[0062] Then, the hydraulic cylinder is controlled to retract the first support block 542 inward, so that the weight of all the gun tip boxes acts on the carrier assembly 4. Then, the motor is controlled to drive the gear 461 to rotate. Since the gear 461 simultaneously engages the racks 4512 on both sides, the rack 4512 on the left side moves upward by the height of one gun tip box, so that the discarded gun tip box 61 moves to the top of the second storage plate 52. At the same time, the rack 4512 on the right side moves downward by the height of one gun tip box, so that the unused gun tip box moves downward to the bottom of the second storage plate 52. Figure 9 At this time, the first support block 542 is controlled to extend outward to fix the gun tip box above the storage assembly 5.

[0063] Next, the telescopic cylinder 43 is controlled to shorten and the motor is rotated in the reverse direction so that the two supporting brackets 452 return to the same height. Figure 10 Finally, the rotating disk 41 is controlled to rotate so that the positions of the two supporting brackets 452 are swapped, and the standby gun tip box 62 is moved to the left side of the supporting bracket 452, as shown. Figure 11 As shown, at the same time, the turntable 31 rotates to move the carrying assembly 4 to the first position so that the robotic arm 2 can continue to obtain the gun head.

[0064] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A fully automatic liquid transfer workstation, comprising a housing (1), wherein a mechanical arm (2) for performing liquid transfer operations is installed in the housing (1), characterized in that: The housing (1) is provided with: A carrying assembly (4), wherein the carrying assembly (4) is movably mounted in the housing (1), and the carrying assembly (4) is capable of moving to a first position and a second position in the housing (1); a carrying bracket (452) is provided on the carrying assembly (4), and the carrying bracket (452) is used to place a gun tip box (62) to be used, so as to cooperate with the robotic arm (2) to perform a pipetting operation; A storage assembly (5), wherein the storage assembly (5) is fixedly installed in the housing (1), and the number of the storage assembly (5) is at least one group, and the storage assembly (5) is used to store discarded gun tip boxes (61) and standby gun tip boxes (62); the storage assembly (5) comprises a first storage plate (51) and a second storage plate (52), wherein the first storage plate (51) and the second storage plate (52) are used to store standby gun tip boxes (62) and discarded gun tip boxes (61), respectively, and the first storage plate (51) and the second storage plate (52) are provided with a through-hole (53), wherein the through-hole (53) can accommodate the discarded gun tip boxes (61) and the standby gun tip boxes (62) and pass through the first storage plate (51) and the second storage plate (52) up and down, and a limiting member (54) is provided above the through-hole (53), and the limiting member (54) is used to fix or loosen the discarded gun tip boxes (61) and the standby gun tip boxes (62); A driving assembly (3), the driving assembly (3) comprising a turntable (31), the turntable (31) being rotatably mounted on the inner bottom surface of the housing (1), the bearing assembly (4) being mounted at a non-center position of the turntable (31); the storage assembly (5) being arranged directly above the turntable (31), so that the bearing assembly (4) can move directly below the storage assembly (5) when the turntable (31) rotates; The driving assembly (3) is used to drive the carrying assembly (4) to move back and forth between a first position and a second position. When the carrying assembly (4) is in the first position, it can cooperate with the robotic arm (2); when the carrying assembly (4) is in the second position, it can cooperate with the storage assembly (5) to transfer the discarded gun tip box (61) on the carrying assembly (4) to the storage assembly (5), and to transfer the ready-to-use gun tip box (62) on the storage assembly (5) to the carrying assembly (4).

2. A fully automatic pipetting workstation according to claim 1, characterized in that: The limiting member (54) includes a fixed box (541), a first support block (542) is provided in the fixed box (541), a hydraulic cylinder for driving the first support block (542) to move horizontally is provided in the fixed box (541), a second support block (453) is provided on the supporting bracket (452), and the first support block (542) and the second support block (453) can act on the discarded gun tip box (61) and the standby gun tip box (62) simultaneously or separately.

3. A fully automatic pipetting workstation according to claim 1, characterized in that: The bearing assembly (4) includes a rotating disk (41), the rotating disk (41) is rotatably mounted on the upper end of the rotating disk (31), a lifting platform (42) is provided at the center of the rotating disk (41), a telescopic cylinder (43) for driving the lifting platform (42) to move up and down is installed on the upper end of the rotating disk (41), and the number of the bearing brackets (452) is two groups, and the two groups of the bearing brackets (452) are symmetrically mounted on both sides of the lifting platform (42).

4. A fully automatic pipetting workstation according to claim 3, characterized in that: A lifting bar (451) is fixedly connected to one side of the supporting bracket (452) close to the lifting platform (42); the lifting bar (451) is slidably mounted on the lifting platform (42); a driving unit (46) is mounted on the lifting platform (42); the driving unit (46) is used to drive the lifting bar (451) to slide in a vertical direction.

5. A fully automatic pipetting workstation according to claim 4, characterized in that: The lifting platform (42) is provided with a sliding groove (421) running through the lifting platform (42) from top to bottom. A sliding protrusion (4511) is fixedly connected to the side wall of the lifting bar (451). The sliding protrusion (4511) is slidably arranged in the sliding groove (421).

6. A fully automatic pipetting workstation according to claim 4, characterized in that: The driving unit (46) includes a motor, the output end of the motor is connected to a gear (461), a rack (4512) is provided on the side wall of the lifting bar (451), and the gear (461) and the rack (4512) are meshed with each other.

7. A fully automatic pipetting workstation according to claim 6, characterized in that: The height of the first storage plate (51) is lower than that of the second storage plate (52), the number of the driving units (46) is one group, and the gear (461) is simultaneously engaged with the racks (4512) on both sides, so that when one group of the supporting brackets (452) moves upward, the other group of the supporting brackets (452) moves downward.

8. The fully automatic liquid transfer workstation according to claim 3, characterized in that: A support seat (44) is fixedly connected to the center of the upper end of the rotating disk (41), and when the telescopic cylinder (43) is in a shortened state, the lifting platform (42) acts on the upper end of the support seat (44).

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