Pipetting assembly and pipetting arm assembly

Abstract

The invention 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, a boss is arranged on the first side portion of the mounting plate, 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] The present invention relates to the field of automated pipetting, and in particular, to a pipetting component and a pipetting arm component. Background Art

[0002] With the rapid development of science and technology, automated pipetting work in laboratories such as biology, chemistry, environment, pharmaceutical R & D, food, etc., as well as units such as hospitals, disease control centers, and blood stations, has become routine. Facing relatively complex research objects and an increasing number of samples, automated pipetting systems have gradually become popular.

[0003] The pipetting arm component is the core component of the automated pipetting system, and the pipetting component is the core component of the pipetting arm component. Existing pipetting components usually include a pipetting pump for pipetting liquid and a pipetting pump drive component for driving the pipetting pump to move in the Z direction and the Y direction (the Z direction and the Y direction are the up - down direction and the front - back direction in the automated pipetting system). Since the thickness of the pipetting component directly affects the pipetting action coverage range of the pipetting arm component (that is, the range in which the pipetting arm component can perform pipetting actions in the Y direction), the thinning of the pipetting component has always been an important development direction. There are already relatively thin pipetting pumps in the prior art, but there is a lack of a relatively thin pipetting pump drive component that matches it. The main reason is that the motors for driving the pipetting pump to move in the Z direction and the Y direction usually have a certain diameter, and the requirements for motor performance also limit the diameter of the motor from being too small. For example, in the Chinese invention patent with the publication number CN219964928U, since its Z - axis drive devices 310 (equivalent to the Z - axis drive motor) are arranged side by side, the Z - axis component 300 has a relatively large thickness, which restricts the pipetting action coverage range of the multi - channel automatic pipetting arm in this patent. It can be seen that the existing pipetting arm components have the defect of a narrow pipetting action coverage range due to the limitation of the thickness of their pipetting components.

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

[0005] The object of the present invention is to provide a pipetting arm component with a wider pipetting action coverage range.

[0006] In order to achieve the above-mentioned objectives, the present invention provides a pipetting assembly, which comprises: a mounting plate, the mounting plate being provided with a first mounting structure and a first avoidance structure distributed along the length direction of the mounting plate, one end of the first side portion of the mounting plate being provided with a boss protruding along the width direction of the mounting plate, the boss being provided with a second mounting structure and a second avoidance structure distributed along the width direction of the mounting plate; a first driving assembly, the first driving assembly being mounted on the mounting plate along the length direction of the mounting plate through the first mounting structure, the first driving assembly being used to drive the mounting plate to move along the thickness direction of the mounting plate, the first avoidance structure being used to avoid the first driving assembly in an adjacent pipetting assembly; a second driving assembly, the second driving assembly being mounted on the boss along the length direction of the mounting plate through the second mounting structure, the second avoidance structure being used to avoid the second driving assembly in an adjacent pipetting assembly; and a pipetting pump, the pipetting pump being used to pipette liquid, the pipetting pump being transmission-connected to the driven end of the second driving assembly, the second driving assembly being used to drive the pipetting pump to move along the length direction of the mounting plate.

[0007] Specifically, the first mounting structure includes a first mounting hole and a receiving hole respectively arranged on the mounting plate, the receiving hole is used to partially receive the first driving assembly, and the first driving assembly is mounted on the mounting plate and partially received in the receiving hole through the cooperation of a fastener with the first mounting hole, and both sides of the first driving assembly protrude from the mounting plate.

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

[0009] Specifically, the first avoidance structure includes a avoidance recess and / or avoidance through-hole corresponding to the first driving assembly in the adjacent pipetting assembly.

[0010] Specifically, the second mounting structure includes a second mounting hole and an accommodating groove respectively arranged on the boss, and the accommodating groove is used to partially accommodate the second drive assembly. The second drive assembly is mounted on the boss and partially accommodated in the accommodating groove through the cooperation of the fastener and the second mounting hole, and both sides of the second drive assembly protrude from the mounting plate.

[0011] Specifically, the second driving assembly includes a second mounting seat, a screw motor, a first guide rail slider assembly and a transmission connecting piece. The screw motor is mounted on the boss through the second mounting seat. One side of the transmission connecting piece is slidably mounted on the first side portion of the mounting plate along the length direction of the mounting plate through the first guide rail slider assembly. The pipette pump is mounted on the other side of the transmission connecting piece. The transmission connecting piece is provided with a mounting cavity. The nut assembly in the screw motor is installed in the mounting cavity. The boss is provided with a through hole that passes through the boss along the length direction of the mounting plate. The screw of the screw motor passes through the through hole and engages with the nut assembly in the mounting cavity.

[0012] Specifically, the second drive assembly also includes a screw mounting assembly installed on the other end of the first side of the mounting plate, the screw mounting assembly includes a third mounting seat and a bearing installed in the third mounting seat, and the free end of the screw in the screw motor cooperates with the bearing.

[0013] Specifically, the second avoidance structure includes a avoidance groove corresponding to the second driving assembly in the adjacent pipetting assembly.

[0014] In addition, the present invention also provides a pipetting arm assembly, which includes: a frame assembly; at least one first pipetting assembly, the first pipetting assembly being the pipetting assembly according to the present invention; at least one second pipetting assembly, the second pipetting assembly being the pipetting assembly according to the present invention, the first pipetting assembly and the second pipetting assembly being movably mounted on the frame assembly along a first direction and spaced apart from each other, the first mounting structure, the first avoidance structure, the second mounting structure and the second avoidance structure in the first pipetting assembly being arranged in a one-to-one correspondence with the first avoidance structure, the first mounting structure, the second avoidance structure and the second mounting structure in the second pipetting assembly; and two transmission assemblies, one of the transmission assemblies being transmission-connected to the first drive assembly in the at least one first pipetting assembly so as to drive the first pipetting assembly to move along the first direction, and the other of the transmission assemblies being transmission-connected to the first drive assembly in the at least one second pipetting assembly so as to drive the second pipetting assembly to move along the first direction.

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

[0016] Due to the provision of the first mounting structure and the first avoidance structure on the mounting plate of the pipetting assembly of the present invention and the second mounting structure and the second avoidance structure on its boss, the first driving assembly can be mounted on the mounting plate along the length direction of the mounting plate through the first mounting structure, and the second driving assembly can be mounted on the boss along the length direction of the mounting plate through the second mounting structure. Moreover, after assembling the frame assembly, at least one first pipetting assembly and at least one second pipetting assembly (the first pipetting assembly and the second pipetting assembly are respectively the pipetting assemblies according to the present invention) and two transmission assemblies to form the pipetting arm assembly of the present invention, since the first pipetting assembly and the second pipetting assembly are respectively movably mounted on the frame assembly along the first direction and are spaced apart from each other, and the first mounting structure, the first avoidance structure, the second mounting structure and the second avoidance structure in the first pipetting assembly are arranged in one-to-one correspondence with the first avoidance structure, the first mounting structure, the second avoidance structure and the second mounting structure in the second pipetting assembly, when the adjacent first pipetting assembly and the second pipetting assembly move along the first direction and approach each other, the first avoidance structure and the second avoidance structure in the first pipetting assembly can correspondingly avoid the parts of the first driving assembly and the second driving 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 driving assembly and the second driving assembly in the adjacent first pipetting assembly that protrude from the mounting plate, so that the center distance between the adjacent first pipetting assembly and the second pipetting assembly is smaller (that is, the distance between the center planes 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 drawings, the center distance between the adjacent first pipetting assembly and the second pipetting assembly is 8.5 millimeters), and finally the pipetting action coverage range of the pipetting arm assembly of the present invention is wider.

[0017] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation part. Brief Description of the Drawings

[0018] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the drawings: Figure 1 is a perspective view of a specific implementation of the pipetting assembly according to the present invention; Figure 2 is Figure 1 the exploded view of the pipetting assembly in Figure 3 is a perspective view of another specific implementation of the pipetting assembly according to the present invention; Figure 4 is Figure 3 the exploded view of the pipetting assembly in Figure 5 It is a perspective view of a specific embodiment of the pipetting arm assembly according to the present invention; Figure 6 It is Figure 5 an exploded view of the pipetting component included in the pipetting arm assembly in

[0019] Description of reference numerals 1. Mounting plate 2. First driving assembly 3. Second driving assembly 4. Pipetting pump 11. First mounting structure 12. First avoiding structure 13. Boss 14. Second mounting structure 15. Second avoiding structure 21. First mounting seat 22. First motor 23. Synchronous pulley 24. Driven wheel assembly 31. Second mounting seat 32. Lead screw motor 33. First guide rail slider assembly 34. Transmission connecting piece 35. Lead screw mounting assembly 101. Frame assembly 102. First pipetting component 103. Second pipetting component 104. Transmission component 105. Second guide rail slider assembly 106. Third guide rail slider assembly 111. First mounting hole 112. Accommodating hole 121. Avoiding depression 122 Avoiding through hole 141. Second mounting hole 142. Accommodating groove 151. Avoiding groove 321. Nut assembly 351. Third mounting seat 352. Bearing A. Length direction of the mounting plate B. Width direction of the mounting plate C. Thickness direction of the mounting plate Y. First direction. Specific embodiments

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. It should be understood that the specific embodiments described herein are only used to illustrate and explain the embodiments of the present application and are not used to limit the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the scope of protection of the present application.

[0021] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0022] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0023] The present invention provides a pipetting assembly, specifically, Figures 1 to 4 As shown, the pipetting assembly includes: a mounting plate 1, the mounting plate 1 is provided with a first mounting structure 11 and a first avoidance structure 12 distributed along the length direction A of the mounting plate 1, one end of the first side portion of the mounting plate 1 is provided with a boss 13 protruding along the width direction B of the mounting plate 1, and the boss 13 is provided with a second mounting structure 14 and a second avoidance structure 15 distributed along the width direction B of the mounting plate 1; a first driving assembly 2, the first driving assembly 2 is installed on the mounting plate 1 along the length direction A of the mounting plate 1 through the first mounting structure 11, and the first driving assembly 2 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 mounting plate 1) The movement in the thickness direction C of the plate 1 also drives the pipetting assembly of the present invention to move along the thickness direction C of the mounting plate 1) The first avoidance structure 12 is used to avoid the first drive assembly 2 in the adjacent pipetting assembly; the second drive assembly 3, the second drive assembly 3 is installed on the boss 13 along the length direction A of the mounting plate 1 through the second mounting structure 14, the second avoidance structure 15 is used to avoid the second drive assembly 3 in the adjacent pipetting assembly; and the pipetting pump 4, the pipetting pump 4 is used to transfer liquid, the pipetting pump 4 is transmission-connected to the driven end of the second drive assembly 3, and the second drive assembly 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.

[0024] In addition, the present invention also provides a pipetting arm assembly, specifically, as Figure 5 and Figure 6As shown, the pipetting arm assembly includes: a frame assembly 101; at least one first pipetting assembly 102, the first pipetting assembly 102 is the pipetting assembly according to the present invention; at least one second pipetting assembly 103, the second pipetting assembly 103 is the pipetting assembly according to the present invention, 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, and the first mounting structure 11, the first avoidance structure 12, the second mounting structure 14 and the second avoidance structure 15 in the first pipetting assembly 102 are aligned with the The first avoidance structure 12, the first mounting structure 11, the second avoidance structure 15 and the second mounting structure 14 in the second pipetting component 103 are arranged in a one-to-one correspondence; and two transmission components 104, one of the transmission components 104 is 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 transmission component 104 is 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.

[0025] Due to the provision of the first mounting structure 11 and the first avoidance structure 12 on the mounting plate 1 of the pipetting assembly of the present invention and the provision of the second mounting structure 14 and the second avoidance structure 15 on its boss 13, the first driving assembly 2 can be mounted on the mounting plate 1 along the length direction of the mounting plate 1 through the first mounting structure 11, and the second driving assembly 3 can be mounted on the boss 13 along the length direction of the mounting plate 1 through the second mounting structure 14. Moreover, after assembling 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 pipetting assembly 103 are respectively the pipetting assemblies according to the present invention), and two transmission assemblies 104 to form the pipetting arm assembly of the present invention, since the first pipetting assembly 102 and the second pipetting assembly 103 are respectively 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 avoidance structure 12, the second mounting structure 14 and the second avoidance structure 15 in the first pipetting assembly 102 are arranged in one-to-one correspondence with the first avoidance structure 12, the first mounting structure 11, the second avoidance structure 15 and the second mounting structure 14 in the second pipetting assembly 103, when the adjacent first pipetting assembly 102 and the second pipetting assembly 103 move along the first direction Y and approach each other, the first avoidance structure 12 and the second avoidance structure 15 in the first pipetting assembly 102 can correspondingly avoid the parts of the first driving assembly 2 and the second driving assembly 3 in the adjacent second pipetting assembly 103 that protrude from the mounting plate 1. Similarly, the second pipetting assembly 103 can correspondingly avoid the parts of the first driving assembly 2 and the second driving assembly 3 in the adjacent first pipetting assembly 102 that protrude from the mounting plate 1. In this way, the problem of the relatively large diameter of the motors of the first driving assembly 2 and the second driving assembly 2 is avoided, so that the center distance between the adjacent first pipetting assembly 102 and the second pipetting assembly 103 is smaller (that is, the distance between the center planes of the mounting plates 1 of the adjacent first pipetting assembly 102 and the second pipetting assembly 103 in the first direction Y. For example, in the embodiment shown in the drawings, the center distance between the adjacent first pipetting assembly 102 and the second pipetting assembly 103 is 8.5 mm), and finally, the coverage range of the pipetting action of the pipetting arm assembly of the present invention is wider.

[0026] It should be noted that the specific structural forms of the mounting plate 1, the first mounting structure 11, the first avoidance structure 12, the boss 13, the second mounting structure 14, and the second avoidance structure 15, as well as the specific types of the first driving component 2, the second driving component 3, and the pipetting pump 4 can all be set as required, and these all fall within the scope of the technical concept of the present invention. Since the specific type of the pipetting pump 4 can adopt the thin and light types in the prior art, it will not be elaborated here. Similarly, the specific structural form of the frame component 101, the specific number of the first pipetting component 102 and the second pipetting component 103, and the specific types of the two transmission components 104 can all be set as required, and these all fall within the scope of the technical concept of the present invention.

[0027] In addition, it can be understood that the thickness direction C of the mounting plate 1 in the pipetting component of the present invention is the same as the first direction Y in the pipetting arm component of the present invention. The reason for using different terms to describe them is that they belong to different topics.

[0028] In the pipetting component of the present invention, specifically, as Figure 2 and Figure 4 shown, the first mounting structure 11 includes a first mounting hole 111 and a receiving hole 112 respectively provided on the mounting plate 1. The receiving hole 112 is used to partially receive the first driving component 2. Thus, through the cooperation of a fastening member (not shown in the figure) with the first mounting hole 111, the first driving component 2 can be mounted on the mounting plate 1 and partially received in the receiving hole 112. Both 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 approach each other, both sides of the first driving component 2 are the parts that need to be avoided by the first avoidance structure 12 in the adjacent first pipetting component 102 or the first avoidance structure 12 in the second pipetting component 103).

[0029] In the above pipetting component, more specifically, as Figure 2 and Figure 4As shown, the first driving assembly 2 includes a first mounting seat 21, a first motor 22, a synchronous pulley 23, and two driven wheel assemblies 24. The first motor 22 is mounted on the first mounting seat 21, and the first mounting seat 21 is mounted on the mounting plate 1 through the cooperation of fasteners (not shown in the figure) with the first mounting hole 111. The synchronous pulley 23 is mounted on the torque output shaft of the first motor 22, and the two driven wheel assemblies 24 are respectively mounted on the first mounting seat 21 (the two driven wheel assemblies 24 and the synchronous pulley 23 are arranged in an isosceles trapezoid or an equilateral triangle). Thus, after the synchronous pulley 23 and the two driven wheel assemblies 24 are engaged with a transmission assembly 104 (such as the synchronous belt in the embodiment shown in the attached drawings) in the pipetting arm assembly of the present invention, the first driving 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.

[0030] In the pipetting assembly of the present invention, more specifically, as Figure 2 and Figure 4 shown, the first avoidance structure 12 includes an avoidance recess 121 and / or an avoidance through-hole 122 corresponding to the first driving assembly in the adjacent pipetting assembly (in the embodiment shown in the attached drawings, the avoidance recess 121 is an arc-shaped recess corresponding to the outer peripheral surface of the motor in the first driving assembly, and the arc-shaped recess is symmetrically formed on the two plate surfaces of the mounting plate 1).

[0031] In the pipetting assembly of the present invention, specifically, as Figure 2 and Figure 4 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 receive the second driving assembly 3. Thus, through the cooperation of fasteners (not shown in the figure) with the second mounting hole 141, the second driving assembly 3 can be mounted on the boss 13 and partially received in the receiving groove 142. The two sides of the second driving assembly 3 protrude from the mounting plate 1 (when the adjacent first pipetting assembly 102 and the second pipetting assembly 103 move along the first direction Y and approach each other, the two sides of the second driving assembly 3 are the parts that need to be avoided by the second avoidance structure 15 in the adjacent first pipetting assembly 102 or the second avoidance structure 15 in the second pipetting assembly 103).

[0032] In the above pipetting assembly, more specifically, as Figure 2 and Figure 4As shown, the second driving component 3 includes a second mounting seat 31, a lead screw motor 32, a first guide rail slider assembly 33, and a transmission connecting member 34. The lead screw motor 32 is mounted on the boss 13 through the second mounting seat 31. One side of the transmission connecting member 34 is slidably mounted on the first side portion of the mounting plate 1 along the length direction A of the mounting plate 1 through the first guide rail slider assembly 33. The liquid transfer pump 4 is mounted on the other side of the transmission connecting member 34. The transmission connecting member 34 is provided with a mounting cavity, and the nut assembly 321 in the lead screw motor 32 is mounted in the mounting cavity. The boss 13 is provided with a through hole that penetrates 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 meshes with the nut assembly 321 in the mounting cavity, so that the liquid transfer pump 4 can be driven by the lead screw motor 32 to move along the length direction A of the mounting plate 1, facilitating the liquid transfer operation of the liquid transfer pump 4.

[0033] In the above liquid transfer assembly, more specifically, as Figure 2 and Figure 4 shown, the second driving component 3 further includes a lead screw mounting assembly 35 mounted at the other end of the first side portion of the mounting plate 1 (the other end of the first side portion of the mounting plate 1 is opposite to one end of the first side portion of the mounting plate 1). The lead screw mounting assembly 35 includes a third mounting seat 351 and a bearing 352 mounted in the third mounting seat 351. The free end of the lead screw in the lead screw motor 32 is engaged with the bearing 352, so that the free end of the lead screw in the lead screw motor 32 is stably mounted at the other end of the first side portion of the mounting plate 1, thereby improving the stability of the second driving component 3.

[0034] In the above liquid transfer assembly, more specifically, as Figure 2 and Figure 4 shown, the second avoidance structure 15 includes a corresponding avoidance groove 151 of the second driving component in the adjacent liquid transfer assembly (in the embodiment shown in the drawings, the avoidance groove 151 is an arc-shaped depression corresponding to the second mounting seat 31 in the second driving component, and the arc-shaped depression is symmetrically formed on two surfaces of the boss 13).

[0035] In the liquid transfer arm assembly of the present invention, specifically, as 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 face each other) is movably mounted on the frame assembly 101 along the first direction Y through the second guide rail slider assembly 105. The second side of the mounting plate 1 in the second pipetting assembly 103 is movably mounted on the frame assembly 101 along the first direction Y through the third guide rail slider assembly 106, so as to realize that the first pipetting assembly 102 and the second pipetting assembly 103 are respectively movably mounted on the frame assembly 101 along the first direction Y.

[0036] The preferred embodiments of the present application have been described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application, and these simple modifications all fall within the protection scope of the present application.

[0037] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any appropriate manner without conflict. To avoid unnecessary repetition, the present application will not separately describe various possible combination methods.

[0038] In addition, any combination can be made between various different embodiments of the present application as long as it does not violate the idea of the present application, and it should also be regarded as the content disclosed in the present application.

Claims

1. A pipetting assembly, characterized in that, The pipetting assembly includes: A mounting plate (1), on which a first mounting structure (11) and a first avoidance structure (12) are arranged 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). A second mounting structure (14) and a second avoidance structure (15) are arranged along the width direction (B) of the mounting plate (1) on the boss (13). A first driving assembly (2), which is mounted on the mounting plate (1) along the length direction (A) of the mounting plate (1) through the first mounting structure (11). The first driving assembly (2) is used to drive the mounting plate (1) to move along the thickness direction (C) of the mounting plate (1), and the first avoidance structure (12) is used to avoid the first driving assembly (2) in an adjacent pipetting assembly. A second driving assembly (3), which is mounted on the boss (13) along the length direction (A) of the mounting plate (1) through the second mounting structure (14). The second avoidance structure (15) is used to avoid the second driving assembly (3) in an adjacent pipetting assembly. And A pipette pump (4) for pipetting liquid. The pipette pump (4) is in transmission connection with the driven end of the second driving assembly (3), and the second driving 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, wherein, The first mounting structure (11) includes a first mounting hole (111) and a receiving hole (112) respectively arranged on the mounting plate (1). The receiving hole (112) is used to partially receive the first driving assembly (2). Through the cooperation of a fastener with the first mounting hole (111), the first driving assembly (2) is mounted on the mounting plate (1) and partially received in the receiving hole (112), and both sides of the first driving assembly (2) protrude from the mounting plate (1).

3. The pipetting assembly according to claim 2, wherein The first driving assembly (2) includes a first mounting seat (21), a first motor (22), a synchronous pulley (23) and two driven wheel assemblies (24). The first motor (22) is mounted on the first mounting seat (21). Through the cooperation of a fastener with the first mounting hole (111), the first mounting seat (21) is mounted on the mounting plate (1). The synchronous pulley (23) is mounted on the torque output shaft of the first motor (22), and the two driven wheel assemblies (24) are respectively mounted on the first mounting seat (21).

4. The pipetting assembly according to any one of claims 1 to 3, characterized in that, The first avoidance structure (12) includes an avoidance depression (121) and / or an avoidance through-hole (122) corresponding to the first driving assembly in an adjacent pipetting assembly.

5. The pipetting assembly according to claim 1, wherein 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 receive the second driving assembly (3). The second driving assembly (3) is mounted on the boss (13) through the cooperation of a fastener with the second mounting hole (141) and is partially received in the receiving groove (142). Both sides of the second driving assembly (3) protrude from the mounting plate (1).

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

7. The pipetting assembly according to claim 6, wherein The second driving assembly (3) further includes a lead screw mounting assembly (35) mounted on the first side portion 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 avoidance structure (15) includes an avoidance groove (151) corresponding to the second driving assembly in the adjacent liquid transfer assembly.

9. A pipetting arm assembly, characterized in that, The liquid transfer arm assembly includes: A frame assembly (101); At least one first liquid transfer assembly (102), where the first liquid transfer assembly (102) is the liquid transfer assembly according to any one of claims 1 to 8; At least one second liquid transfer assembly (103), where the second liquid transfer assembly (103) is the liquid transfer assembly according to any one of claims 1 to 8. The first liquid transfer assembly (102) and the second liquid transfer assembly (103) are respectively movably mounted on the frame assembly (101) along the first direction (Y) and are spaced apart from each other. The first mounting structure (11), the first avoidance structure (12), the second mounting structure (14) and the second avoidance structure (15) in the first liquid transfer assembly (102) are arranged in one-to-one correspondence with the first avoidance structure (12), the first mounting structure (11), the second avoidance structure (15) and the second mounting structure (14) in the second liquid transfer assembly (103); and Two transmission components (104), one of the transmission components (104) is in driving connection with the first driving 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 transmission component (104) is in driving connection with the first driving 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 pipetting arm assembly according to claim 9, characterized in that, The second side portion of the mounting plate (1) in the first pipetting component (102) is movably mounted on the frame component (101) along the first direction (Y) through a second guide rail slider assembly (105), and the second side portion of the mounting plate (1) in the second pipetting component (103) is movably mounted on the frame component (101) along the first direction (Y) through a third guide rail slider assembly (106).

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