Pipetting assembly and pipetting arm assembly

Abstract

The utility model relates to the field of automatic pipetting and discloses a pipetting assembly and a pipetting arm assembly, the pipetting assembly comprises a mounting plate, the mounting plate is provided with a first mounting structure and a first avoiding structure, the first side part of the mounting plate is provided with a boss, and the boss is provided with a second mounting structure and a second avoiding structure; the first driving assembly is mounted on the mounting plate in the length direction of the mounting plate through a first mounting structure, the first driving assembly is used for driving the mounting plate to move in the thickness direction of the mounting plate, and the first avoiding structure is used for avoiding the first driving assembly in the adjacent pipetting assemblies; the second driving assembly is mounted on the boss in the length direction of the mounting plate through a second mounting structure, and the second avoiding structure is used for avoiding the second driving assembly in the adjacent pipetting assembly; the liquid transfer pump is used for transferring liquid, and the second driving assembly is used for driving the liquid transfer pump to move in the length direction of the mounting plate.

Description

Technical Field

[0001] This utility model relates to the field of automated pipetting, specifically to a pipetting assembly and a pipetting arm assembly. Background Technology

[0002] With the rapid development of science and technology, automated pipetting has become routine in laboratories of biology, chemistry, environment, pharmaceutical research and development, food, as well as in hospitals, disease control centers, blood banks, and other units. Faced with more complex research objects and an increasing number of samples, automated pipetting systems have gradually become more widespread.

[0003] The pipetting arm assembly is a core component of an automated pipetting system, and the pipetting assembly itself is the core component of the pipetting arm assembly. Existing pipetting assemblies typically include a pipetting pump for transferring liquids and a pipetting pump drive assembly that moves the pump in the Z and Y directions (the Z and Y directions correspond to the vertical and horizontal directions in an automated pipetting system, respectively). Since the thickness of the pipetting assembly directly affects the pipetting range of the pipetting arm assembly (i.e., the range of pipetting action the pipetting arm assembly can perform in the Y direction), making the pipetting assembly thinner and lighter has always been an important direction in its development. Existing technologies have already... While relatively thin and lightweight pipette pumps exist, there is a lack of matching thin and lightweight pipette pump drive components. This is primarily because the motors driving the pipette pump in the Z and Y directions typically have a certain diameter, and performance requirements also limit the motor's diameter. For example, in Chinese utility model patent CN219964928U, the Z-axis drive device 310 (equivalent to a Z-axis drive motor) is arranged side-by-side, resulting in a relatively large thickness for the Z-axis assembly 300. This restricts the pipetting coverage of the multi-channel automated pipetting arm in that patent. Therefore, existing pipetting arm assemblies suffer from a narrow pipetting coverage due to the limitations imposed by the thickness of their components.

[0004] In view of this, there is a need in the art for a pipetting arm assembly with a wider range of pipetting action coverage. Summary of the Invention

[0005] The purpose of this invention is to provide a pipetting arm assembly with a wider coverage of pipetting action.

[0006] To achieve the above objectives, this utility model provides a pipetting assembly, comprising: a mounting plate having a first mounting structure and a first clearance structure distributed along the length of the mounting plate; a boss protruding along the width of the mounting plate at one end of a first side portion of the mounting plate; the boss having a second mounting structure and a second clearance structure distributed along the width of the mounting plate; a first driving assembly mounted on the mounting plate along the length of the mounting plate via the first mounting structure; the first driving assembly driving the mounting plate to move along the thickness of the mounting plate; the first clearance structure clearing adjacent first driving assemblies; a second driving assembly mounted on the boss along the length of the mounting plate via the second mounting structure; the second clearance structure clearing adjacent second driving assemblies; and a pipetting pump for dispensing liquid, the pipetting pump being drivenly connected to the driven end of the second driving assembly; the second driving assembly driving the pipetting pump to move along the length of the mounting plate.

[0007] Specifically, the first mounting structure includes a first mounting hole and a receiving hole respectively disposed on the mounting plate. The receiving hole is used to partially accommodate the first drive component. The first drive component is mounted on the mounting plate and partially accommodated in the receiving hole by fasteners cooperating with the first mounting hole. The two sides of the first drive component protrude from the mounting plate.

[0008] Specifically, the first drive assembly includes a first mounting base, a first motor, a synchronous pulley, and two driven pulley assemblies. The first motor is mounted on the first mounting base, and the first mounting base is mounted on the mounting plate through the cooperation of fasteners with the first mounting holes. The synchronous pulley is mounted on the torque output shaft of the first motor, and the two driven pulley assemblies are respectively mounted on the first mounting base.

[0009] Specifically, the first clearance structure includes clearance recesses and / or clearance through holes corresponding to the first drive component in the adjacent pipetting assembly.

[0010] Specifically, the second mounting structure includes a second mounting hole and a receiving groove respectively disposed on the boss. The receiving groove is used to partially accommodate the second drive component. The second drive component is mounted on the boss and partially accommodated in the receiving groove by the cooperation of fasteners with the second mounting hole. The two sides of the second drive component protrude from the mounting plate.

[0011] Specifically, the second drive assembly includes a second mounting base, a lead screw motor, a first guide rail slider assembly, and a transmission connector. The lead screw motor is mounted on the boss via the second mounting base. One side of the transmission connector is slidably mounted on the first side of the mounting plate along the length direction of the mounting plate via the first guide rail slider assembly. The pipette pump is mounted on the other side of the transmission connector. The transmission connector has a mounting cavity. The nut assembly of the lead screw motor is installed in the mounting cavity. The boss has a through hole that extends through the boss along the length direction of the mounting plate. The lead screw of the lead screw motor passes through the through hole and engages with the nut assembly in the mounting cavity.

[0012] Specifically, the second drive assembly further includes a lead screw mounting assembly mounted on the other end of the first side of the mounting plate. The lead screw mounting assembly includes a third mounting base and a bearing mounted in the third mounting base. The free end of the lead screw in the lead screw motor cooperates with the bearing.

[0013] Specifically, the second clearance structure includes a clearance groove corresponding to the second drive component in the adjacent pipetting assembly.

[0014] Furthermore, this utility model also provides a pipetting arm assembly, the pipetting arm assembly comprising: a frame assembly; at least one first pipetting component, the first pipetting component being the pipetting component according to this utility model; at least one second pipetting component, the second pipetting component being the pipetting component according to this utility model, the first pipetting component and the second pipetting component being movably mounted on the frame assembly along a first direction and spaced apart from each other, the first mounting structure, first clearance structure, second mounting structure and second clearance structure in the first pipetting component being positioned in a one-to-one correspondence with the first clearance structure, first mounting structure, second clearance structure and second mounting structure in the second pipetting component; and two transmission components, one of the transmission components being drively connected to the first driving component in the at least one first pipetting component to drive the first pipetting component to move along the first direction, and the other transmission component being drively connected to the first driving component in the at least one second pipetting component to drive the second pipetting component to move along the first direction.

[0015] Specifically, the second side of the mounting plate in the first pipetting assembly is movably mounted to the frame assembly along the first direction via a second guide rail slider assembly, and the second side of the mounting plate in the second pipetting assembly is movably mounted to the frame assembly along the first direction via a third guide rail slider assembly.

[0016] The pipetting assembly of this utility model has a first mounting structure and a first clearance structure on its mounting plate, and a second mounting structure and a second clearance structure on its boss. This allows the first drive assembly to be mounted on the mounting plate along its length direction via the first mounting structure, and the second drive assembly to be mounted on the boss along its length direction via the second mounting structure. Furthermore, after assembling the frame assembly, at least one first pipetting assembly, and at least one second pipetting assembly (the first and second pipetting assemblies are respectively pipetting assemblies according to this utility model) and two transmission assemblies to form the pipetting arm assembly of this utility model, the first and second pipetting assemblies are movably mounted on the frame assembly along a first direction and spaced apart from each other. Moreover, the first mounting structure, first clearance structure, second mounting structure, and second clearance structure in the first pipetting assembly are consistent with the first clearance structure, first mounting structure, and second clearance structure in the second pipetting assembly. The avoidance structure and the second mounting structure are positioned in a one-to-one correspondence. Therefore, when the adjacent first pipetting assembly and second pipetting assembly move along the first direction and come close to each other, the first avoidance structure and the second avoidance structure in the first pipetting assembly can correspondingly avoid the parts of the first drive assembly and the second drive assembly in the adjacent second pipetting assembly that protrude from the mounting plate. Similarly, the second pipetting assembly can correspondingly avoid the parts of the first drive assembly and the second drive assembly in the adjacent first pipetting assembly that protrude from the mounting plate, making the center distance between the adjacent first pipetting assembly and the second pipetting assembly smaller (i.e., the distance between the center surfaces of the mounting plates of the adjacent first pipetting assembly and the second pipetting assembly in the first direction, for example, in the embodiment shown in the figure, the center distance between the adjacent first pipetting assembly and the second pipetting assembly is 8.5 mm). Ultimately, this makes the pipetting action coverage of the pipetting arm assembly of this utility model wider.

[0017] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a perspective view of a specific embodiment of the pipetting assembly according to the present invention;

[0020] Figure 2 yes Figure 1 Exploded view of the pipetting assembly in the middle;

[0021] Figure 3 This is a perspective view of another specific embodiment of the pipetting assembly according to the present invention;

[0022] Figure 4 yes Figure 3 Exploded view of the pipetting assembly in the middle;

[0023] Figure 5 This is a perspective view of a specific embodiment of the pipette arm assembly according to the present invention;

[0024] Figure 6 yes Figure 5 An exploded view of the pipetting assembly included in the pipetting arm assembly.

[0025] Explanation of reference numerals in the attached figures

[0026] 1. Mounting plate 2. First drive component

[0027] 3. Second drive assembly; 4. Pipette pump

[0028] 11. First mounting structure 12. First clearance structure

[0029] 13. Boss 14. Second mounting structure

[0030] 15. Second avoidance structure

[0031] 21. First mounting base; 22. First motor

[0032] 23. Synchronous belt pulley 24. Driven pulley assembly

[0033] 31. Second mounting base; 32. Lead screw motor

[0034] 33. First guide rail slider assembly; 34. Transmission connecting component

[0035] 35. Lead screw mounting assembly

[0036] 101. Frame assembly; 102. First pipetting assembly

[0037] 103. Second pipetting assembly; 104. Transmission assembly

[0038] 105. Second guide rail slider assembly; 106. Third guide rail slider assembly

[0039] 111. First mounting hole; 112. Receiving hole

[0040] 121. Avoiding recesses; 122. Avoiding through holes.

[0041] 141. Second mounting hole; 142. Receiving groove

[0042] 151. Avoiding the groove

[0043] 321. Nut assembly

[0044] 351. Third mounting bracket; 352. Bearing

[0045] A. Length direction of the mounting plate B. Width direction of the mounting plate

[0046] C. Thickness direction of the mounting plate

[0047] Y, First direction. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of the embodiments of this application and are not intended to limit the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0049] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0050] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0051] This utility model provides a pipetting assembly, specifically, as follows: Figures 1 to 4As shown, the pipetting assembly includes: a mounting plate 1, which has a first mounting structure 11 and a first clearance structure 12 distributed along the length direction A of the mounting plate 1; a boss 13 protruding along the width direction B of the mounting plate 1 is provided at one end of the first side portion of the mounting plate 1; the boss 13 has a second mounting structure 14 and a second clearance structure 15 distributed along the width direction B of the mounting plate 1; and a first driving assembly 2, which is mounted on the mounting plate 1 along the length direction A of the mounting plate 1 via the first mounting structure 11, and is used to drive the mounting plate 1 to move along the thickness direction C of the mounting plate 1 (the first driving assembly 2 drives the mounting plate 1 along the thickness direction C of the mounting plate 1). The first clearance structure 12 is used to avoid the first driving component 2 in the adjacent pipetting assembly; the second driving component 3 is mounted on the boss 13 along the length direction A of the mounting plate 1 through the second mounting structure 14, and the second clearance structure 15 is used to avoid the second driving component 3 in the adjacent pipetting assembly; and the pipetting pump 4 is used to transfer liquid, the pipetting pump 4 is connected to the driven end of the second driving component 3, and the second driving component 3 is used to drive the pipetting pump 4 to move along the length direction A of the mounting plate 1 so that the pipetting pump 4 can perform pipetting action.

[0052] In addition, this utility model also provides a pipette arm assembly, specifically, as follows: Figure 5 and Figure 6 As shown, the pipette arm assembly includes: a frame assembly 101; at least one first pipette assembly 102, wherein the first pipette assembly 102 is a pipette assembly according to the present invention; and at least one second pipette assembly 103, wherein the second pipette assembly 103 is a pipette assembly according to the present invention. The first pipette assembly 102 and the second pipette assembly 103 are movably mounted on the frame assembly 101 along a first direction Y and are spaced apart from each other. The first pipette assembly 102 includes a first mounting structure 11, a first clearance structure 12, a second mounting structure 14, and a second clearance structure 15. The first clearance structure 12, the first mounting structure 11, the second clearance structure 15, and the second mounting structure 14 in the second pipetting assembly 103 are arranged in a one-to-one correspondence; and two transmission assemblies 104, one of which is connected to the first drive assembly 2 in the at least one first pipetting assembly 102 to drive the first pipetting assembly 102 to move along the first direction Y, and the other of which is connected to the first drive assembly 2 in the at least one second pipetting assembly 103 to drive the second pipetting assembly 103 to move along the first direction Y.

[0053] The pipetting assembly of this invention has a first mounting structure 11 and a first clearance structure 12 on its mounting plate 1, and a second mounting structure 14 and a second clearance structure 15 on its boss 13. Therefore, the first drive assembly 2 can be mounted on the mounting plate 1 along the length of the mounting plate 1 via the first mounting structure 11, and the second drive assembly 3 can be mounted on the boss 13 along the length of the mounting plate 1 via the second mounting structure 14. Furthermore, the frame assembly 101, at least one first pipetting assembly 102, and at least one second pipetting assembly 103 (the first pipetting assembly 102 and the second drive assembly 103) can be mounted on the boss 13 along the length of the mounting plate 1. The two pipetting components 103 (which are pipetting components according to this utility model) and two transmission components 104 are assembled to form the pipetting arm assembly of this utility model. Since the first pipetting component 102 and the second pipetting component 103 are movably mounted on the frame assembly 101 along the first direction Y and are spaced apart from each other, and the first mounting structure 11, the first clearance structure 12, the second mounting structure 14, and the second clearance structure 15 in the first pipetting component 102 are aligned with the first clearance structure 12, the first mounting structure 11, the second clearance structure 15, and the second clearance structure 15 in the second pipetting component 103,... The mounting structures 14 are positioned in a one-to-one correspondence. Therefore, when adjacent first pipetting components 102 and second pipetting components 103 move along the first direction Y and come close to each other, the first clearance structure 12 and the second clearance structure 15 in the first pipetting component 102 can correspondingly clearance the portions of the first drive component 2 and the second drive component 3 in the adjacent second pipetting component 103 that protrude from the mounting plate 1. Similarly, the second pipetting component 103 can correspondingly clearance the portions of the first drive component 2 and the second drive component 3 in the adjacent first pipetting component 102 that protrude from the mounting plate 1. This avoids the problem of the large diameter of the motors of the first drive assembly 2 and the second drive assembly 2, and makes the center distance between adjacent first pipetting assemblies 102 and second pipetting assemblies 103 smaller (that is, the distance between the center surfaces of the mounting plates 1 of adjacent first pipetting assemblies 102 and second pipetting assemblies 103 in the first direction Y, for example, in the embodiment shown in the figure, the center distance between adjacent first pipetting assemblies 102 and second pipetting assemblies 103 is 8.5 mm), and finally makes the pipetting action coverage of the pipetting arm assembly of this utility model wider.

[0054] It should be noted that the specific structural forms of the mounting plate 1, the first mounting structure 11, the first clearance structure 12, the boss 13, the second mounting structure 14, and the second clearance structure 15, as well as the specific types of the first drive assembly 2, the second drive assembly 3, and the pipette pump 4, can all be set as needed, and these all fall within the scope of the technical concept of this utility model. Since the specific type of the pipette pump 4 can adopt a thinner type from the prior art, it will not be described in detail. Similarly, the specific structural form of the frame assembly 101, the specific number of the first pipette assembly 102 and the second pipette assembly 103, and the specific types of the two transmission assemblies 104 can all be set as needed, and these all fall within the scope of the technical concept of this utility model.

[0055] It is also understood that the thickness direction C of the mounting plate 1 in the pipetting assembly of this utility model is the same as the first direction Y in the pipetting arm assembly of this utility model. The reason why different terms are used to describe them is because they belong to different topics.

[0056] Specifically, in the pipetting assembly of this utility model, as shown in... Figure 2 and Figure 4 As shown, the first mounting structure 11 includes a first mounting hole 111 and a receiving hole 112 respectively disposed on the mounting plate 1. The receiving hole 112 is used to partially accommodate the first driving component 2. Thus, the first driving component 2 can be mounted on the mounting plate 1 and partially accommodated in the receiving hole 112 by the cooperation of a fastener (not shown in the figure) with the first mounting hole 111. The two sides of the first driving component 2 protrude from the mounting plate 1 (when the adjacent first pipetting component 102 and the second pipetting component 103 move along the first direction Y and come close to each other, the two sides of the first driving component 2 are the parts that need to be avoided by the first clearance structure 12 in the adjacent first pipetting component 102 or the first clearance structure 12 in the second pipetting component 103).

[0057] In the aforementioned pipetting components, more specifically, such as Figure 2 and Figure 4As shown, the first drive assembly 2 includes a first mounting base 21, a first motor 22, a synchronous pulley 23, and two driven pulley assemblies 24. The first motor 22 is mounted on the first mounting base 21, and the first mounting base 21 is mounted on the mounting plate 1 through the cooperation of fasteners (not shown in the figure) and the first mounting hole 111. The synchronous pulley 23 is mounted on the torque output shaft of the first motor 22. The two driven pulley assemblies 24 are respectively mounted on the first mounting base 21 (the two driven pulley assemblies 24 and the synchronous pulley 23 are arranged in an isosceles trapezoid or an equilateral triangle). So when the synchronous pulley 23 and the two driven pulley assemblies 24 are engaged with a transmission component 104 (such as the synchronous belt in the embodiment shown in the figure) of the pipetting arm assembly of the present invention, the first drive assembly 2 can drive the mounting plate 1 and the components mounted on the mounting plate 1 to move along the thickness direction C of the mounting plate 1, thereby driving the pipetting assembly of the present invention to move along the thickness direction C of the mounting plate 1.

[0058] In the pipetting assembly of this utility model, more specifically, as follows: Figure 2 and Figure 4 As shown, the first clearance structure 12 includes a clearance recess 121 and / or clearance through hole 122 corresponding to the first drive component in the adjacent pipetting assembly (in the embodiment shown in the figure, the clearance recess 121 is an arc-shaped recess corresponding to the outer peripheral surface of the motor in the first drive assembly, and the arc-shaped recess is symmetrically formed on the two surfaces of the mounting plate 1).

[0059] Specifically, in the pipetting assembly of this utility model, as shown in... Figure 2 and Figure 4 As shown, the second mounting structure 14 includes a second mounting hole 141 and a receiving groove 142 respectively provided on the boss 13. The receiving groove 142 is used to partially accommodate the second drive assembly 3. Thus, the second drive assembly 3 can be installed on the boss 13 and partially accommodated in the receiving groove 142 by the cooperation of a fastener (not shown in the figure) with the second mounting hole 141. The two sides of the second drive assembly 3 protrude from the mounting plate 1 (when the adjacent first pipetting assembly 102 and second pipetting assembly 103 move along the first direction Y and come close to each other, the two sides of the second drive assembly 3 are the parts that need to be avoided by the second clearance structure 15 in the adjacent first pipetting assembly 102 or the second clearance structure 15 in the second pipetting assembly 103).

[0060] In the aforementioned pipetting components, more specifically, such as Figure 2 and Figure 4As shown, the second drive assembly 3 includes a second mounting base 31, a lead screw motor 32, a first guide rail slider assembly 33, and a transmission connector 34. The lead screw motor 32 is mounted on the boss 13 via the second mounting base 31. One side of the transmission connector 34 is slidably mounted on the first side of the mounting plate 1 along the length direction A of the mounting plate 1 via the first guide rail slider assembly 33. The pipette pump 4 is mounted on the other side of the transmission connector 34. The transmission connector 34 is provided with a mounting cavity. The nut assembly 321 of the lead screw motor 32 is installed in the mounting cavity. The boss 13 is provided with a through hole that passes through the boss 13 along the length direction A of the mounting plate 1. The lead screw of the lead screw motor 32 passes through the through hole and engages with the nut assembly 321 in the mounting cavity. Thus, the pipette pump 4 can be driven to move along the length direction A of the mounting plate 1 by the lead screw motor 32, so that the pipette pump 4 can perform pipetting operations.

[0061] In the aforementioned pipetting assembly, more specifically, such as Figure 2 and Figure 4 As shown, the second drive assembly 3 further includes a lead screw mounting assembly 35 installed at the other end of the first side of the mounting plate 1 (the other end of the first side of the mounting plate 1 and one end of the first side of the mounting plate 1 are opposite to each other). The lead screw mounting assembly 35 includes a third mounting base 351 and a bearing 352 installed in the third mounting base 351. The free end of the lead screw in the lead screw motor 32 cooperates with the bearing 352, thereby firmly mounting the free end of the lead screw in the lead screw motor 32 to the other end of the first side of the mounting plate 1, thereby improving the stability of the second drive assembly 3.

[0062] In the aforementioned pipetting assembly, more specifically, such as Figure 2 and Figure 4 As shown, the second clearance structure 15 includes a clearance groove 151 corresponding to the second drive assembly in the adjacent pipetting assembly (in the embodiment shown in the figure, the clearance groove 151 is an arcuate recess corresponding to the second mounting base 31 in the second drive assembly, which is symmetrically formed on both sides of the boss 13).

[0063] In the pipette arm assembly of this utility model, specifically, as follows: Figure 5 and Figure 6As shown, the second side of the mounting plate 1 in the first pipetting assembly 102 (the second side of the mounting plate 1 and the first side of the mounting plate 1 are opposite to each other) is movably mounted to the frame assembly 101 along the first direction Y via the second guide rail slider assembly 105, and the second side of the mounting plate 1 in the second pipetting assembly 103 is movably mounted to the frame assembly 101 along the first direction Y via the third guide rail slider assembly 106, thereby realizing that the first pipetting assembly 102 and the second pipetting assembly 103 are movably mounted to the frame assembly 101 along the first direction Y respectively.

[0064] The preferred embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this application, various simple modifications can be made to the technical solution of this application, and these simple modifications all fall within the protection scope of this application.

[0065] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this application will not describe the various possible combinations separately.

[0066] Furthermore, various different implementations of this application can be combined in any way, as long as they do not violate the spirit of this application, they should also be regarded as the content disclosed in this application.

Claims

1. A pipetting assembly, characterized in that, The pipetting assembly includes: Mounting plate (1), the mounting plate (1) is provided with a first mounting structure (11) and a first clearance structure (12) distributed along the length direction (A) of the mounting plate (1), a boss (13) protruding along the width direction (B) of the mounting plate (1) is provided on the first side of the mounting plate (1), and the boss (13) is provided with a second mounting structure (14) and a second clearance structure (15) distributed along the width direction (B) of the mounting plate (1); The first driving component (2) is mounted on the mounting plate (1) along the length direction (A) of the mounting plate (1) via the first mounting structure (11). The first driving component (2) is used to drive the mounting plate (1) to move along the thickness direction (C) of the mounting plate (1). The first avoidance structure (12) is used to avoid the first driving component (2) in the adjacent pipetting assembly. The second drive assembly (3) is mounted on the boss (13) along the length direction (A) of the mounting plate (1) via the second mounting structure (14), and the second clearance structure (15) is used to avoid the second drive assembly (3) in the adjacent pipetting assembly; and A pipette pump (4) is used to transfer liquid. The pipette pump (4) is connected to the driven end of the second drive assembly (3). The second drive assembly (3) is used to drive the pipette pump (4) to move along the length direction (A) of the mounting plate (1).

2. The pipetting assembly according to claim 1, characterized in that, The first mounting structure (11) includes a first mounting hole (111) and a receiving hole (112) respectively disposed on the mounting plate (1). The receiving hole (112) is used to partially accommodate the first drive assembly (2). The first drive assembly (2) is mounted on the mounting plate (1) and partially accommodated in the receiving hole (112) by fasteners cooperating with the first mounting hole (111). The two sides of the first drive assembly (2) protrude from the mounting plate (1).

3. The pipetting assembly according to claim 2, characterized in that, The first drive assembly (2) includes a first mounting base (21), a first motor (22), a synchronous pulley (23), and two driven pulley assemblies (24). The first motor (22) is mounted on the first mounting base (21). The first mounting base (21) is mounted on the mounting plate (1) by fasteners cooperating with the first mounting hole (111). The synchronous pulley (23) is mounted on the torque output shaft of the first motor (22). The two driven pulley assemblies (24) are respectively mounted on the first mounting base (21).

4. The pipetting assembly according to any one of claims 1 to 3, characterized in that, The first clearance structure (12) includes a clearance recess (121) and / or clearance through hole (122) corresponding to the first drive component in the adjacent pipetting assembly.

5. The pipetting assembly according to claim 1, characterized in that, The second mounting structure (14) includes a second mounting hole (141) and a receiving groove (142) respectively provided on the boss (13). The receiving groove (142) is used to partially accommodate the second drive assembly (3). The second drive assembly (3) is mounted on the boss (13) and partially accommodated in the receiving groove (142) by fasteners cooperating with the second mounting hole (141). The two sides of the second drive assembly (3) protrude from the mounting plate (1).

6. The pipetting assembly according to claim 5, characterized in that, The second drive assembly (3) includes a second mounting base (31), a lead screw motor (32), a first guide rail slider assembly (33), and a transmission connector (34). The lead screw motor (32) is mounted on the boss (13) via the second mounting base (31). One side of the transmission connector (34) is slidably mounted on the first side of the mounting plate (1) along the length direction (A) of the mounting plate (1) via the first guide rail slider assembly (33). The pipette pump (4) is mounted on the other side of the transmission connector (34). The transmission connector (34) is provided with a mounting cavity. The nut assembly (321) in the lead screw motor (32) is installed in the mounting cavity. The boss (13) is provided with a through hole that passes through the boss (13) along the length direction (A) of the mounting plate (1). The lead screw of the lead screw motor (32) passes through the through hole and engages with the nut assembly (321) in the mounting cavity.

7. The pipetting assembly according to claim 6, characterized in that, The second drive assembly (3) further includes a lead screw mounting assembly (35) mounted on the first side of the mounting plate (1). The lead screw mounting assembly (35) includes a third mounting base (351) and a bearing (352) mounted in the third mounting base (351). The free end of the lead screw in the lead screw motor (32) cooperates with the bearing (352).

8. The pipetting assembly according to any one of claims 5 to 7, characterized in that, The second clearance structure (15) includes a clearance groove (151) corresponding to the second drive component in the adjacent pipetting assembly.

9. A pipette arm assembly, characterized in that, The pipette arm assembly includes: Framework components (101); At least one first pipetting assembly (102), wherein the first pipetting assembly (102) is a pipetting assembly according to any one of claims 1 to 8; At least one second pipetting assembly (103), the second pipetting assembly (103) being a pipetting assembly according to any one of claims 1 to 8, wherein the first pipetting assembly (102) and the second pipetting assembly (103) are movably mounted on the frame assembly (101) along a first direction (Y) and are spaced apart from each other, wherein the first mounting structure (11), the first clearance structure (12), the second mounting structure (14), and the second clearance structure (15) in the first pipetting assembly (102) are positioned in a one-to-one correspondence with the first clearance structure (12), the first mounting structure (11), the second clearance structure (15), and the second mounting structure (14) in the second pipetting assembly (103); and Two drive components (104), one of which is drively connected to the first drive component (2) in the at least one first pipetting component (102) to drive the first pipetting component (102) to move along the first direction (Y), and the other of which is drively connected to the first drive component (2) in the at least one second pipetting component (103) to drive the second pipetting component (103) to move along the first direction (Y).

10. The pipette arm assembly according to claim 9, characterized in that, The second side of the mounting plate (1) in the first pipetting assembly (102) is movably mounted to the frame assembly (101) along the first direction (Y) via the second guide rail slider assembly (105), and the second side of the mounting plate (1) in the second pipetting assembly (103) is movably mounted to the frame assembly (101) along the first direction (Y) via the third guide rail slider assembly (106).

Images