Pipettor with clamping function and workstation
By integrating the clamping and pipetting components in gene detection and using a clutch mechanism for directional selection, the problem of interference between the clamping and pipetting components is solved, improving operational reliability and structural simplicity, and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-03-24
AI Technical Summary
In gene testing, the integrated clamping and pipetting components are prone to interference, leading to unstable aspiration and dispensing operations and even sample contamination.
Design a pipette with clamping function, install the clamping component and the pipetting component on the same mounting bracket, and connect it to the motion base in a clutch-type manner through a clutch component to achieve directional selection function and reduce interference of synchronous movement of the grippers.
It achieves integrated clamping and pipetting functions, simplifies the structure, reduces the number of drive motors, improves operational reliability and flexibility, and reduces interference with other components.
Smart Images
Figure CN224025066U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of molecular diagnostics, and more specifically, to a pipette and workstation with clamping function. Background Technology
[0002] In the field of gene testing, to improve the accuracy and efficiency of the testing process, specialized workstations are typically built to provide a clean, enclosed space, enabling the smooth execution of multiple key steps. These workstations usually include two important components: a clamping component for holding consumable cartridges and performing transport operations, and a pipetting component responsible for transferring sample solutions or reagents from sample tubes.
[0003] In order to effectively reduce the space occupied by the workstation and achieve cost savings, the engineers focused on integrating the clamping and pipetting components, which were previously independent of each other, into a single set of three-dimensional linear motion components.
[0004] However, in the pursuit of further simplification, compactness, and lightweighting of the integrated structure, and in an attempt to reduce the load pressure on the three-way linear motion components, another technical problem arose. Technicians considered directly connecting the power component that drives the gripper to perform opening and closing actions to the power component that drives the pipetting parts to generate suction or repulsion forces, in order to further reduce the number of drive motors required for the integrated structure. However, this connection method has significant drawbacks in actual gene detection applications. During the pipetting process, the gripper moves synchronously, easily touching or impacting the consumable box or sample tube, leading to unstable suction and discharge operations, spillage, and even sample contamination, causing significant inconvenience and risk to gene detection work.
[0005] The above statements are for the purpose of providing background information related to this application only, and do not necessarily constitute prior art. Utility Model Content
[0006] The purpose of this application is to provide a pipette and workstation with clamping function, which can alleviate the technical problem of interference between the clamping component and the pipetting component when they are integrated into one unit.
[0007] The embodiments of this application are implemented as follows:
[0008] The first aspect of this application provides a pipette with a clamping function, which includes a mounting frame, a pipetting component, a clamping component, and a clutch component. The pipetting component includes a movable base movably mounted on the mounting frame, and the pipetting component can generate suction or repulsion force through the movement of the movable base. The clamping component includes a clamping transmission member and grippers. The clamping transmission member is movably mounted on the mounting frame, and the grippers are openable and closeable on the mounting frame. The clamping transmission member and grippers are connected in a transmission manner to adjust the posture of the grippers. The clutch component is mounted on the movable base, and the clamping transmission member is disengaged from the movable base via the clutch component.
[0009] In some embodiments, the clutch component includes a connecting shaft that is telescopically disposed on a motion base; the clamping transmission component includes a coupling hole for accommodating the extended connecting shaft.
[0010] In some embodiments, the coupling hole is a strip-shaped hole that extends along the movable direction of the moving base and is clearance-fitted with the connecting shaft.
[0011] In some embodiments, the clutch component further includes an electromagnet, which is disposed on the moving base and connected to the connecting shaft; when the electromagnet is energized, the connecting shaft extends relative to the moving base, and when the electromagnet is de-energized, the connecting shaft retracts relative to the moving base.
[0012] In some embodiments, the clamping component includes two jaws, each jaw rotatably mounted on a mounting frame, and a clamping transmission member movably mounted on the mounting frame; by moving the clamping transmission member in a first linear direction, the two jaws rotate synchronously in opposite directions to perform a clamping action or a releasing action.
[0013] In some embodiments, the grippers are respectively arranged on both sides of the pipetting component; the gripping drive is configured to be driven to each gripper when moving between a first position and a second position; when the gripping drive is in the first position, both grippers are close to the pipetting component or the mounting bracket, and when the gripping drive is in the second position, both grippers are away from the pipetting component.
[0014] In some embodiments, an elastic element is provided between the clamping drive and the mounting bracket. When the clamping drive is separated from the moving base, the elastic element is used to drive the clamping drive back to the first position.
[0015] In some embodiments, the mounting bracket includes an upright guide post, and a clamping transmission member is vertically mounted on the guide post, with the height of the second position being greater than the height of the first position.
[0016] In some embodiments, the mounting bracket includes a receiving chamber, and the clamping transmission member includes a transmission portion movably disposed within the receiving chamber. When one end of the receiving chamber abuts against the transmission portion, the clamping transmission member is in a first position, and when the other end of the receiving chamber abuts against the transmission portion, the clamping transmission member is in a second position.
[0017] In some embodiments, the pipette with clamping function further includes a limit sensor located at a first position and / or a second position on the mounting bracket.
[0018] The second aspect of this application provides a workstation including a three-way linear motion device and a pipette with clamping function provided in any embodiment of the first aspect of this application, wherein the pipette with clamping function is connected to the three-way linear motion device.
[0019] The advantages of this application compared to related technologies are:
[0020] The pipette with clamping function provided in this application integrates the clamping and pipetting functions by mounting the pipetting component and the clamping component together on the same mounting bracket. The pipette only needs one set of three-way linear motion device to realize both pipetting and clamping transfer functions, which improves the simplicity and compactness of the overall structure of the pipette and effectively reduces costs. On this basis, the clamping transmission component used to drive the opening and closing of the grippers is attached to the motion base used to drive the pipetting component to generate suction or repulsion force, which can save the number of drive motors, further improve the simplicity and compactness of the overall structure of the pipette, and further reduce costs. In addition, the clamping transmission component is clutch-type connected to the motion base through a clutch component, which can realize the directional selection of specific transfer functions, improve the application flexibility and operational reliability of the pipette. Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the workstation structure shown in some embodiments of this application;
[0023] Figure 2 This is a schematic diagram of the overall structure of a pipette with clamping function shown in some embodiments of this application;
[0024] Figure 3 This is a front view schematic diagram of a pipette with clamping function shown in some embodiments of this application;
[0025] Figure 4 This is a cross-sectional schematic diagram of a pipette with clamping function shown in some embodiments of this application.
[0026] Icons: 1-Workstation; 2-Three-way linear motion device; 3-Pipette with clamping function; 4-Mounting frame; 41-Mounting top; 42-Mounting base; 43-Mounting column; 44-Guide column; 45-Liquidation chamber; 46-Elastic element; 5-Pipette component; 51-Motion base; 52-Piston rod assembly; 53-Piston chamber base; 54-Retracting tip assembly; 55-Drive motor; 6-Clamping component; 61-Clamping transmission component; 610-Coupling hole; 62-Gripper; 620-Clamping surface; 63-Intermediate transmission mechanism; 631-Rack; 632-Gear; 7-Clutch component; 71-Connecting shaft; 72-Electromagnet; A-First linear direction. Detailed Implementation
[0027] The terms “first,” “second,” “third,” etc., are used only for distinguishing descriptions and do not indicate a sequence number, nor should they be interpreted as indicating or implying relative importance.
[0028] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0029] In the description of this application, it should be noted that the terms "inner", "outer", "left", "right", "upper", "lower", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0030] In the description of this application, unless otherwise expressly specified and limited, the terms “set up,” “install,” “connect,” and “link” shall be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; as a direct connection or an indirect connection through an intermediate medium; or as a connection within two components.
[0031] The technical solution of this application will now be described in detail with reference to the accompanying drawings.
[0032] Commercially available gene testing workstations typically separate the pipetting device for aspirating and dispensing liquids or reagents from the clamping device for holding consumable cartridges. This requires each device to have its own three-way linear motion mechanism for transport, resulting in a space-consuming and costly structure. Considering that the areas for holding consumable cartridges and aspirating / dispensing liquids often overlap, and that these two operations are usually performed sequentially and independently, this application provides a pipette with a clamping function. The pipetting and clamping components are mounted on the same mounting frame, achieving integrated clamping and pipetting functions and improving the overall structural compactness. Furthermore, a clutch mechanism allows for selective connection between the clamping transmission component and the motion base (pipetting transmission component), enabling directional selection between the pipetting and clamping functions. The clutch mechanism further enhances the overall compactness, application flexibility, and operational reliability of the pipette, while also saving costs, offering higher economic benefits, and broadening its applicability.
[0033] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of workstation 1 shown in some embodiments of this application. For example... Figure 1 As shown, this application embodiment provides a workstation 1, which includes a three-way linear motion device 2 and a pipette 3 with clamping function. The pipette 3 with clamping function is connected to the three-way linear motion device 2.
[0034] In this embodiment, workstation 1 refers to an experimental operation platform integrating multiple functional devices, which work together to perform operations such as molecular diagnostics, gene detection, and chemical experiments; the three-axis linear motion device 2 refers to a mechanical device capable of precise movement in three mutually perpendicular linear directions (usually defined as X, Y, and Z axes), which provides positional movement functions for other devices within workstation 1 (such as pipetting devices or clamping devices), thereby enabling the processing and transfer of objects at different positions; the pipette 3 with clamping function refers to an improvement on the relevant pipetting device, which, in addition to having the functions of aspirating and discharging liquids, also has a clamping function and can be used to grasp, fix, and transfer experimental consumables or consumable boxes.
[0035] Furthermore, the three-way linear motion device 2 may include three linear motion mechanisms, each of which may include a guide rail, a slider, a lead screw, and a motor. The guide rail guides the movement of the slider, the slider can be connected to the lead screw, and the lead screw can be connected to the motor. The motor drives the lead screw to rotate, thereby causing the slider to move linearly along the guide rail. Three such linear motion mechanisms installed perpendicularly to each other constitute the three-way linear motion device 2. A pipette 3 with a clamping function can be fixedly connected to the outermost slider in the three-way linear motion device 2 via a connecting seat or bracket, so that it moves followingly under the drive of the three-way linear motion device 2.
[0036] Please see Figures 2 to 4 , Figure 2 This is a schematic diagram of the overall structure of a pipette 3 with clamping function shown in some embodiments of this application; Figure 3 This is a front view schematic diagram of a pipette 3 with clamping function shown in some embodiments of this application; Figure 4 This is a cross-sectional schematic diagram of a pipette 3 with clamping function shown in some embodiments of this application. Figures 2 to 4 As shown in the figure, this application provides a pipette 3 with clamping function. The pipette 3 with clamping function includes a mounting frame 4, a pipetting component 5, a clamping component 6, and a clutch component 7.
[0037] The pipetting component 5 includes a movable base 51 movably mounted on the mounting frame 4. The pipetting component 5 can generate suction or repulsion force through the movement of the movable base 51. The clamping component 6 includes a clamping transmission component 61 and a gripper 62. The clamping transmission component 61 is movably mounted on the mounting frame 4, and the gripper 62 is openable and closeable on the mounting frame 4. The clamping transmission component 61 and the gripper 62 are connected in a transmission manner to adjust the posture of the gripper 62. The clutch component 7 is mounted on the movable base 51, and the clamping transmission component 61 is connected to the movable base 51 in a clutch-type manner through the clutch component 7.
[0038] In this embodiment, the mounting frame 4 refers to the basic support structure of the pipette. The mounting frame 4 provides a location for accommodating, installing, and fixing other components, thereby stabilizing the relative positions and movements of the various components. The pipetting component 5 refers to the assembly used to achieve liquid aspiration and dispensing functions. It generates suction or repulsion force through a specific movement of the moving base 51, thereby completing the liquid transfer operation. The moving base 51 refers to the movable structure in the pipetting component 5. Its movement is the key power factor for generating suction or repulsion force. The moving base 51 is usually connected to a drive motor and moves under the drive of the drive motor. The moving base 51 can provide the power to generate suction or repulsion force to the pipetting component 5 by moving or rotating. The clamping component 6 refers to the structure used to perform clamping and releasing operations on experimental consumables. The clamping component 6 adjusts the posture of the gripper 62 through a specific transmission structure, such as the movement of the clamping transmission component 61, thereby completing the clamping or releasing action. The clamping transmission component 61 refers to the transmission structure in the clamping component 6. The clamping transmission component 61 can transmit power to the grippers 62 through movement (movement or rotation) on the mounting bracket 4, thereby realizing the opening and closing action of the grippers 62. The grippers 62 typically refer to the components that directly contact the experimental consumables. Multiple grippers 62 cooperate to clamp and release consumables or consumable boxes through opening and closing actions. The clutch component 7 is a structure that can connect and separate the motion base 51 from the clamping transmission component 61. It is used to control the power transmission between the motion base 51 and the clamping transmission component 61, enabling pipetting and clamping operations to be performed independently or in conjunction.
[0039] In the above technical solution, the arrangement of mounting the pipetting component 5 and the clamping component 6 together on the same mounting bracket 4 achieves the integrated function of clamping and pipetting. The pipette only needs one set of three-way linear motion device 2 to realize both pipetting and clamping transfer functions, which improves the simplicity and compactness of the overall structure of the pipette and can effectively reduce costs. On this basis, the clamping transmission component 61 used to drive the opening and closing of the gripper 62 is attached to the motion base 51 used to drive the pipetting component 5 to generate suction or repulsion force, which can save the number of drive motors 55, further improve the simplicity and compactness of the overall structure of the pipette, and further reduce costs. On this basis, the clamping transmission component 61 is connected to the motion base 51 in a clutch-type manner through the clutch component 7, which can realize the directional selection of the specific transfer function of the pipette, improve the application flexibility and operational reliability of the pipette.
[0040] Specifically, the mounting bracket 4 may include a mounting top 41, a mounting base 42, and a mounting column 43, with the mounting column 43 erected between the mounting top 41 and the mounting base 42. The pipetting component 5 may include a drive motor 55, a moving base 51, a piston rod assembly 52, a piston chamber base 53, and a suction tip assembly 54. The drive motor 55 may be mounted on the mounting top 41 and is connected to the moving base 51 via a transmission component, such as a lead screw or a drive shaft, to drive the moving base 51 to reciprocate linearly along the extension direction of the mounting column 43, i.e., the first linear direction A.
[0041] The piston chamber base 53 is connected to the mounting base 42 and is used to cooperate with the piston rod assembly 52. The piston rod assembly 52 is located at one end of the moving base 51 near the piston chamber base 53 and can move with the moving base 51. The piston chamber base 53 has multiple piston chambers, and the piston rod assembly 52 includes multiple piston rods. The positions and dimensions of the multiple piston rods and the multiple piston chambers correspond one-to-one and cooperate with each other. By moving the piston rods within the piston chambers, the pipetting assembly generates suction or repulsion forces. Figures 2 to 3 As shown, the drive motor 55 drives the piston rod assembly 52 to move upward, the sealing space between the piston rod and the piston chamber increases, forming a vacuum negative pressure, thereby generating suction (i.e., liquid suction force); conversely, the piston rod assembly 52 moves downward, forming a positive pressure thrust (i.e., liquid repulsion force). The combination of suction and thrust can complete the liquid transfer operation.
[0042] The pipette tip retraction assembly 54 is located at the bottom end of the piston chamber base 53. The pipette tip retraction assembly 54 includes multiple pipette tips. The position and size of the pipette tips correspond one-to-one with the piston chamber and they cooperate with each other. The pipette tips are used to automatically remove the pipette tips used on the pipetting component 5 (piston chamber base 53) so as to facilitate the replacement of new pipette tips and the next pipetting operation.
[0043] In other embodiments, the liquid gun assembly (i.e., the form in which the piston rod and piston chamber are coupled) in the pipetting component 5 can also be replaced with a water pump structure.
[0044] In some embodiments, the clamping member 6 includes two jaws 62, each jaw 62 being rotatably mounted on the mounting frame 4, and a clamping transmission member 61 being movably mounted on the mounting frame 4. Through the movement of the clamping transmission member 61 in a first linear direction A, the two jaws 62 rotate synchronously in opposite directions to perform a clamping or releasing action. Specifically, each jaw 62 includes a clamping surface 620. When the two jaws 62 cooperate to perform a clamping action, the clamping surfaces 620 of the two jaws 62 are opposite to each other and close to each other. When the two jaws 62 cooperate to perform a releasing action, the clamping surfaces 620 of the two jaws 62 are far apart from each other or opposite to each other.
[0045] In some embodiments, along a second straight direction perpendicular to the first straight direction A ( Figure 3 (in the left-right direction), grippers 62 are respectively arranged on both sides of the pipetting component 5, and are rotatably connected to the mounting base 42. The piston chamber base 53 and the suction tip assembly 54 are located between the two grippers 62. Further, along the third straight direction perpendicular to the first straight direction A (in the left-right direction), Figure 4 (In the left-right direction), the clamping transmission component 61 is located on the side of the moving base 51 and the piston chamber base 53 away from the mounting column 43, that is, the pipetting component 5 is located between the clamping transmission component 61 and the mounting column 43. The first, second, and third straight directions are perpendicular to each other. In the above technical solution, the grippers 62 are respectively arranged on both sides of the piston chamber base 53, and the clamping transmission component 61 and the piston chamber base 53 are arranged side by side, making the overall structure of the pipetting device 3 with clamping function more compact.
[0046] In some embodiments, the clamping transmission member 61 is configured to move between a first position and a second position and is drively connected to each of the grippers 62; when the clamping transmission member 61 is in the first position, the clamping surfaces 620 of the two grippers 62 are opposite to each other, and both grippers 62 are based on the arrangement direction of the motion base 51 relative to the piston chamber base 53 (i.e., Figures 2 to 4 The grippers 62 extend in the upward direction shown, and both grippers 62 are positioned close to the pipetting component 5 or the mounting bracket 4 (piston chamber base 53 or mounting bracket 4); when the gripping transmission component 61 is in the second position, both grippers 62 are away from the pipetting component 5, and based on the arrangement direction of the tip ejection assembly 54 relative to the piston chamber base 53 (…). Figures 2 to 4 Extending downwards (as shown), the clamping surfaces 620 of the two grippers 62 face each other. In the above technical solution, the grippers 62 are retracted in the non-clamping state and are placed close to the pipetting component 5 or the mounting bracket 4. This arrangement allows the pipette to maintain good overall compactness even when the clamping function is not used, reducing interference of the grippers 62 with other components in the workstation 1 or interference with pipetting operations.
[0047] Furthermore, the clamping transmission member 61 can be connected to the two grippers 62 via an intermediate transmission mechanism 63. The intermediate transmission mechanism 63 can be located along the second linear direction (…). Figure 3Two gear and rack pairs are respectively arranged on both sides of the clamping transmission component 61 in the left-right direction. The racks 631 are connected to both sides of the clamping transmission component 61 and can reciprocate along the first linear direction A with the clamping transmission component 61. One rack 631 meshes with one gear 632, and one gear 632 is coaxially connected to one gripper 62, so that its own rotation drives the gripper 62 to rotate. The rack 631 can be embedded in or fixed to the clamping transmission component 61 with screws, or it can be integrally formed with the clamping transmission component 61. Optionally, by setting the structural parameters of the gears 632 and racks 631, the rotation angle of each gripper 62 can reach more than 180 degrees.
[0048] In some embodiments, the clutch component 7 includes a connecting shaft 71, which is telescopically mounted on the motion base 51; the clamping transmission component 61 includes a coupling hole 610 for accommodating the extended connecting shaft 71. The coupling hole 610 can be a round hole or an elongated hole, and the coupling hole 610 is typically clearance-fitted with the connecting shaft 71 to facilitate the smooth extension and retraction of the connecting shaft 71.
[0049] Specifically, the coupling hole 610 is a strip-shaped hole. When the clutch component 7, clamping component 6, mounting bracket 4, and pipetting component 5 are assembled, the strip-shaped hole can extend along the movable direction of the moving base 51 (i.e., the first linear direction A). A clearance fit is used between the strip-shaped hole and the connecting shaft 71. In this technical solution, the strip-shaped hole allows the connecting shaft 71 to move slightly with the moving base 51, adaptively adjusting the connection position between the strip-shaped hole and the connecting shaft 71. This reduces friction between the connecting shaft 71 and the inner wall of the coupling hole 610 when the connecting shaft 71 extends or retracts, making connection and disengagement smoother.
[0050] In some embodiments, the clutch component 7 further includes an electromagnet 72, which is mounted on the motion base 51 and connected to the connecting shaft 71. When the electromagnet 72 is energized, the connecting shaft 71 extends relative to the motion base 51, and the motion base 51 and the clamping transmission component 61 are connected and combined through the extended connecting shaft 71 (the connecting shaft 71 extends into the coupling hole 610). The drive motor 55 can drive the clamping transmission component 61 to move through the motion base 51, thereby driving the gripper 62 to rotate. When the electromagnet 72 is de-energized, the connecting shaft 71 retracts relative to the motion base 51, and the motion base 51 and the clamping transmission component 61 are separated and independent of each other through the retracted connecting shaft 71 (the connecting shaft 71 is not in the coupling hole 610). The drive motor 55 can only complete the liquid suction and discharge operations through the movement of the motion base 51, and the clamping transmission component 61 and the gripper 62 remain stationary based on the initial position or initial state.
[0051] In other embodiments, the clutch component 7 can also drive the connecting shaft 71 to achieve telescopic movement via a linear motor or a rotary-linear motion conversion mechanism (e.g., a cam drive mechanism, a small lead screw and nut pair).
[0052] In some embodiments, the mounting bracket 4 further includes a plurality of vertically arranged guide posts 44. For example... Figure 2 As shown, the motion base 51 can be directionally moved along the first straight direction A by two vertically arranged guide columns 44. The guide columns 44 (guide screws) can be rotatably mounted on the mounting top seat 41 by a rotary bearing, or the guide columns 44 can be movably mounted on the mounting top seat 41 by a linear bearing.
[0053] The clamping transmission component 61 can also move directionally along the first straight direction A via two other vertically arranged guide posts 44. The clamping transmission component 61 can be connected to the guide posts 44 via linear bearings. Specifically, when the mounting bracket 4, pipetting component 5, clamping component 6, and clutch component 7 are assembled and put into use, the clamping transmission component 61 is vertically mounted on the guide posts 44, with the height of the second position being greater than the height of the first position. In the above technical solution, when the clamping transmission component 61 is separated from the moving base 51, it can automatically sink back to the first position based on its own gravity, and drive all the grippers 62 to return to the initial retracted state through the intermediate transmission mechanism 63, with the gripping surfaces 620 facing away from each other and the grippers 62 in contact with the piston chamber base 53 (or mounting base 42), thereby reducing the interference of the grippers 62 on other components or pipetting operations.
[0054] In other embodiments, the motion base 51 and the clamping transmission member 61 can also achieve directional movement via linear guide rails.
[0055] In some embodiments, the mounting bracket 4 may further include a receiving chamber 45 disposed on the mounting base 42, and the clamping transmission member 61 includes a transmission part (which can be understood as the part where the rack 631 is located) and a connecting part having a coupling hole 610. The transmission part is connected to the connecting part, the transmission part is movably disposed in the receiving chamber 45, and the connecting part is movably disposed outside the receiving chamber 45. During the process of the transmission part moving along the first linear direction A with the moving base 51, when one end of the receiving chamber 45 (the inner wall of the bottom end of the receiving chamber 45) abuts against the bottom end of the transmission part, the clamping transmission member 61 is in a first position; when the other end of the receiving chamber 45 (the inner wall of the top end of the receiving chamber 45) abuts against the top end of the transmission part, the clamping transmission member 61 is in a second position.
[0056] In some embodiments, an elastic element 46 may be provided between the clamping transmission member 61 (linear bearing) and the mounting top seat 41. The elastic element 46 may be sleeved on the outer periphery of the guide post 44. For example, the elastic element 46 may surround the outer periphery of the guide post 44 in the form of a spring. The elastic element 46 is used to drive the clamping transmission member 61 to return to the first position. Specifically, when the clamping transmission member 61 is separated from the motion base 51, the clamping transmission member 61 may fall to the bottom based on the elastic force generated by the spring returning from the compressed state to the initial state and its own gravity, that is, the clamping transmission member 61 returns to the first position, and the jaw 62 returns to the initial retracted state in which it extends upward, the clamping surfaces 620 face away from each other, and the jaw 62 is in contact with the piston chamber base 53 (or mounting base 42).
[0057] In some embodiments, the pipette 3 with clamping function may further include a limit sensor, which may be disposed on the mounting bracket 4 and correspond to the first position and second position of the clamping transmission member 61 on the mounting bracket 4 (guide post 44). In the above technical solution, the drive motor 55 can stop moving when the limit sensor detects the clamping transmission member 61, so as to reduce the probability that the clamping transmission member 61 will touch the tip ejection assembly 54 or impact the mounting bracket 4 or the piston chamber base 53, thereby causing damage to the pipette.
[0058] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A pipette having a clamping function, characterized in that The pipette comprises: a mounting frame; a pipetting component, which comprises a movable base movably arranged on the mounting frame, and is capable of generating a liquid suction force or a liquid repulsion force through movement of the movable base; a clamping component, which comprises a clamping transmission member movably arranged on the mounting frame, and a clamping jaw arranged on the mounting frame in a manner capable of being opened and closed, the clamping transmission member and the clamping jaw being in transmission connection to adjust the posture of the clamping jaw; a clutch component arranged on the movable base, the clamping transmission member being in clutch connection with the movable base through the clutch component.
2. The pipette with a clamping function according to claim 1, characterized in that, The clutch component comprises a connecting shaft telescopically arranged on the movable base, and the clamping transmission member comprises a coupling hole for accommodating the extended connecting shaft.
3. The pipette with a clamping function according to claim 2, characterized in that, The coupling hole is a strip-shaped hole extending along the movable direction of the movable base, and the strip-shaped hole is in clearance fit with the connecting shaft.
4. The pipette with a clamping function according to claim 2, characterized in that, The clutch component further comprises an electromagnet arranged on the movable base and connected with the connecting shaft, the connecting shaft extends relative to the movable base when the electromagnet is powered on, and the connecting shaft retracts relative to the movable base when the electromagnet is powered off.
5. The pipette with a clamping function according to claim 1, characterized in that, The clamping component comprises two clamping jaws, each of which is rotatably arranged on the mounting frame, and the clamping transmission member is movably arranged on the mounting frame, the two clamping jaws are synchronously and oppositely rotated through movement of the clamping transmission member in a first linear direction to perform a clamping action or a releasing action.
6. The pipette with a clamping function according to claim 5, characterized in that, The clamping jaws are arranged on both sides of the pipetting component respectively, and the clamping transmission member is configured to be in transmission connection with each clamping jaw when moving between a first position and a second position. When the clamping transmission member is in the first position, both clamping jaws are close to the pipetting component or the mounting frame, and when the clamping transmission member is in the second position, both clamping jaws are away from the pipetting component.
7. The pipette with a clamping function according to claim 6, characterized in that, An elastic member is arranged between the clamping transmission member and the mounting frame, and the elastic member is used to drive the clamping transmission member to return to the first position when the clamping transmission member is separated from the movable base.
8. The pipette with a clamping function according to claim 6 or 7, characterized in that, The mounting frame comprises a guide column arranged vertically, and the clamping transmission member is liftably arranged on the guide column, the height of the second position is greater than the height of the first position.
9. The pipette with a clamping function according to claim 6, characterized in that, The mounting frame comprises a receiving chamber, and the clamping transmission member comprises a transmission part movably arranged in the receiving chamber, the clamping transmission member is in the first position when one end of the receiving chamber abuts against the transmission part, and the clamping transmission member is in the second position when the other end of the receiving chamber abuts against the transmission part.
10. The pipette with a clamping function according to claim 6, wherein The pipette with clamping function further comprises a limit sensor arranged at the first position and / or the second position on the mounting frame.
11. A workstation, characterized by The pipette with clamping function comprises: the pipette with clamping function according to any one of claims 1-10. A three-dimensional linear motion device, the pipette with clamping function is connected with the three-dimensional linear motion device.