A test tube gripper device for a pipetting station

Abstract

The application discloses a test tube clamping device for a pipetting workstation, and belongs to the field of pipetting workstations. The test tube clamping device for the pipetting workstation comprises a pipetting workbox, a hole plate positioning groove arranged in the pipetting workbox and used for arranging a test tube hole plate, a double-coordinate moving mechanism arranged at the top of the pipetting workbox, a lifting push rod arranged at the movable end of the double-coordinate moving mechanism, a liquid taking mechanism arranged at the movable end of the lifting push rod, and a lifting seat fixedly installed at the movable end of the lifting push rod. The test tube clamping device for the pipetting workstation is provided with a clamping mechanism, cooperates with the double-coordinate moving mechanism and the lifting push rod, and realizes the functions of automatically clamping and transferring a test tube in the pipetting workstation. The test tube clamping device for the pipetting workstation solves the problem that the existing pipetting workstation can only complete pipetting work but cannot realize test tube transfer, and improves the automation degree and efficiency of experimental operation.

Description

Technical Field

[0001] This application relates to the field of pipetting workstation technology, specifically a test tube clamping device for a pipetting workstation. Background Technology

[0002] A pipetting workstation is a highly automated and integrated laboratory device, mainly used to accurately and efficiently perform operations such as transferring, dispensing, and mixing liquid samples.

[0003] Most existing pipetting workstations can only transfer sample liquids using a lancet, while the transfer of test tubes when changing tubes can only be done manually, which requires opening the work box and makes it easy for external air to enter and affect the quality of subsequent pipetting.

[0004] Therefore, this application provides a test tube clamping device for a pipetting workstation to solve the above-mentioned problems. Utility Model Content

[0005] This application provides a test tube clamping device for a pipetting workstation, which aims to solve the problem mentioned in the background art that existing pipetting workstations can only perform pipetting work but cannot perform test tube transfer work.

[0006] To achieve the above objectives, this application provides the following technical solution: a test tube clamping device for a pipetting workstation, comprising a pipetting workbox, a well plate positioning groove disposed within the pipetting workbox for placing test tubes in a well plate, a dual-coordinate moving mechanism disposed at the top of the pipetting workbox, a lifting push rod disposed at the movable end of the dual-coordinate moving mechanism, a liquid-collecting mechanism disposed at the movable end of the lifting push rod, the liquid-collecting mechanism comprising a lifting seat fixedly installed at the movable end of the lifting push rod, at least three sets of liquid-collecting needles disposed in a linear array below the lifting seat, and a device fixedly installed on the... A compensating push rod is connected to the bottom of the lifting seat and the movable end of the lifting needle to drive its short-distance lifting and lowering. A gripping connecting plate is fixedly connected to the bottom of the lifting seat via four connecting rods arranged in a rectangular array. The gripping connecting plate has an opening for the lifting needle to pass through. A gripping mechanism for holding test tubes is provided at the bottom of the gripping connecting plate. The gripping mechanism includes V-shaped clamps symmetrically arranged on both sides of the opening, approaching or moving away from each other, and gripping push rods fixedly installed at the bottom of the gripping connecting plate, with their movable ends connected to the two V-shaped clamps at their respective far ends. Thus, by setting up the gripping mechanism, in conjunction with the dual-coordinate moving mechanism and the lifting push rod, the function of automatically gripping and transferring test tubes within the pipetting workstation is realized. This solves the problem that existing pipetting workstations can only perform pipetting but cannot transfer test tubes, improving the automation level and efficiency of experimental operations.

[0007] Preferably, the pipetting box has observation windows on both the front and rear sides.

[0008] Preferably, the dual-coordinate moving mechanism includes a horizontal moving seat that moves laterally at the top of the pipetting work box, a horizontal lead screw that is rotatably connected to the pipetting work box and screwed to the horizontal moving seat, a horizontal motor that is fixedly installed in the pipetting work box and whose output shaft is connected to the horizontal lead screw, a horizontal moving seat that moves longitudinally at the bottom of the horizontal moving seat, a horizontal lead screw that is rotatably connected to the horizontal moving seat and screwed to the horizontal moving seat, and a horizontal motor that is fixedly installed on the horizontal moving seat and whose output shaft is connected to the horizontal lead screw.

[0009] Preferably, the top of the pipetting chamber is provided with a T-shaped guide rail that is slidably connected to the horizontal transverse moving seat, and the horizontal transverse moving seat has an auxiliary stabilizing slide rod that passes through and is slidably connected to the horizontal longitudinal moving seat.

[0010] Preferably, the lifting push rod is fixedly installed at the bottom of the horizontal longitudinal moving seat.

[0011] Preferably, auxiliary stabilizing telescopic rods are provided at the four corner positions corresponding to the horizontal longitudinal moving seat and the lifting seat.

[0012] Preferably, the inner side of each V-shaped chuck has a rubber pad.

[0013] This pipetting workstation uses a test tube clamping device. By setting up a clamping mechanism, combined with a dual-coordinate moving mechanism and a lifting push rod, it realizes the function of automatically clamping and transferring test tubes within the pipetting workstation. This solves the problem that existing pipetting workstations can only complete pipetting but cannot transfer test tubes, thus improving the automation level and efficiency of experimental operations.

[0014] This pipetting workstation uses a test tube clamping device. During the liquid retrieval process, the compensating push rod can drive the retrieval needle to move up and down a short distance, which can accurately control the distance between the retrieval needle and the liquid surface in the test tube. This avoids affecting the retrieval accuracy due to the retrieval needle being inserted too deeply or too shallowly, thereby improving the quality of pipetting.

[0015] This pipetting workstation uses a test tube clamping device. Since the test tube transfer can be completed automatically by the device, there is no need for manual opening of the work box. This reduces the chance of external air entering the pipetting work box, lowers the risk of contamination caused by manual operation, and ensures the stability of the experimental environment and the accuracy of experimental results.

[0016] This pipetting workstation uses a test tube clamping device. The liquid taking mechanism and the clamping mechanism are integrated together through a gripping connecting plate. The liquid taking needle passes through the opening on the gripping connecting plate. The structure is compact and the layout is reasonable. It not only ensures the independent realization of the functions of the two mechanisms, but also saves internal space of the device, making the entire pipetting workstation more miniaturized and integrated. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a test tube clamping device for a pipetting workstation. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the structure of a test tube clamping device for a pipetting workstation. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the liquid-taking mechanism and the clamping mechanism of a test tube clamping device for a pipetting workstation.

[0020] In the picture:

[0021] 1. Pipetting box; 11. Orifice plate positioning slot; 12. Observation window; 13. T-shaped guide rail;

[0022] 2. Dual-coordinate moving mechanism; 21. Horizontal transverse moving seat; 211. Auxiliary stabilizing slide bar; 22. Horizontal transverse lead screw; 23. Horizontal transverse motor; 24. Horizontal longitudinal moving seat; 25. Horizontal longitudinal lead screw; 26. Horizontal longitudinal motor;

[0023] 3. Lifting push rod; 31. Auxiliary stabilizing telescopic rod;

[0024] 4. Liquid dispensing mechanism; 41. Lifting seat; 42. Liquid dispensing needle; 43. Compensating push rod; 44. Connecting rod; 45. Gripping connecting plate; 451. Through port;

[0025] 5. Clamping mechanism; 51. V-shaped chuck; 52. Clamping push rod. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] This embodiment provides a test tube clamping device for a pipetting workstation, such as... Figures 1-3As shown, the test tube clamping device of the pipetting workstation includes a pipetting work box 1, a well plate positioning groove 11 for placing test tubes in the well plate inside the pipetting work box 1, a dual-coordinate moving mechanism 2 at the top of the pipetting work box 1, a lifting push rod 3 at the movable end of the dual-coordinate moving mechanism 2, and a liquid-collecting mechanism 4 at the movable end of the lifting push rod 3. The liquid-collecting mechanism 4 includes a lifting seat 41 fixedly installed at the movable end of the lifting push rod 3, at least three sets of liquid-collecting needles 42 arranged in a linear array below the lifting seat 41, and a device fixedly installed at the bottom of the lifting seat 41 with its movable end connected to the liquid-collecting needles 42. 2. A compensation push rod 43 is connected to drive the short-distance lifting and lowering of the lifting seat 41. The bottom of the lifting seat 41 is fixedly connected to a gripping connecting plate 45 by four connecting rods 44 arranged in a rectangular array. The gripping connecting plate 45 has an opening 451 for the liquid collection needle 42 to pass through. The bottom of the gripping connecting plate 45 is provided with a gripping mechanism 5 for holding the test tube. The gripping mechanism 5 includes V-shaped clamps 51 symmetrically arranged on both sides of the opening 451 and close to or far from each other, and gripping push rods 52 fixedly installed on the bottom of the gripping connecting plate 45, with their movable ends connected to the two V-shaped clamps 51 at opposite ends.

[0028] In use, the dual-coordinate moving mechanism 2 moves according to a preset program, positioning the liquid-collecting mechanism 4 above the test tube containing the sample liquid. The lifting push rod 3 pushes the lifting seat 41 downward, bringing the liquid-collecting needle 42 close to the liquid surface inside the test tube. The compensation push rod 43 finely adjusts the height of the liquid-collecting needle 42 according to preset parameters, ensuring accurate insertion below the liquid surface. The liquid-collecting needle 42 draws a specified amount of sample liquid. Then, the compensation push rod 43 slightly raises the liquid-collecting needle 42, and the lifting push rod 3 raises the lifting seat 41 upward, causing the liquid-collecting mechanism 4 to leave the test tube and then be transferred to other receiving test tubes. When it is necessary to move the test tube, the dual-coordinate moving mechanism 2 moves according to a preset program, positioning the liquid-collecting mechanism 4 above the test tube containing the sample liquid. The coordinate moving mechanism 2 moves the gripping mechanism 5 above the test tube to be transferred. The lifting push rod 3 pushes the gripping connecting plate 45 downward, bringing the V-shaped clamp 51 closer to the test tube. The lifting push rod 3 lifts the gripping connecting plate 45 upward, lifting the test tube. The dual coordinate moving mechanism 2 moves the gripping mechanism 5 holding the test tube to the target position. The lifting push rod 3 pushes the gripping connecting plate 45 downward, placing the test tube into the target position. The gripping push rod 52 pulls the two V-shaped clamps 51 away from each other, releasing the test tube. The lifting push rod 3 lifts the gripping connecting plate 45 upward, completing one test tube transfer operation.

[0029] Specifically, the pipetting workbox 1 has observation windows 12 on both the front and rear sides; during the operation of the pipetting workstation, light can pass through the observation windows 12, allowing the operator to directly observe the real-time status of the test tube clamping device and various operations such as pipetting inside the pipetting workbox 1 from the outside.

[0030] Specifically, the dual-coordinate moving mechanism 2 includes a horizontal transverse moving seat 21 that moves laterally at the top of the pipetting chamber 1; a horizontal transverse lead screw 22 that is rotatably connected to the pipetting chamber 1 and screwed to the horizontal transverse moving seat 21; a horizontal transverse motor 23 that is fixedly installed in the pipetting chamber 1 and whose output shaft is connected to the horizontal transverse lead screw 22; a horizontal longitudinal moving seat 24 that moves longitudinally at the bottom of the horizontal transverse moving seat 21; a horizontal longitudinal lead screw 25 that is rotatably connected to the horizontal transverse moving seat 21 and screwed to the horizontal longitudinal moving seat 24; and a horizontal longitudinal motor 26 that is fixedly installed in the horizontal transverse moving seat 21 and whose output shaft is connected to the horizontal longitudinal lead screw 25; the horizontal transverse motor... When motor 23 starts, its output shaft drives the horizontal transverse lead screw 22 to rotate. Since the horizontal transverse moving seat 21 is screwed to the horizontal transverse lead screw 22, under the action of the lead screw drive, the horizontal transverse moving seat 21 moves along the horizontal transverse direction at the top of the pipetting work box 1. When motor 26 starts, its output shaft drives the horizontal longitudinal lead screw 25 to rotate. The horizontal longitudinal moving seat 24 is screwed to the horizontal longitudinal lead screw 25. Under the action of the lead screw drive, the horizontal longitudinal moving seat 24 moves along the horizontal longitudinal direction at the bottom of the horizontal transverse moving seat 21. Through the combination of horizontal transverse movement and horizontal longitudinal movement, the precise position adjustment of the movable end of the dual coordinate moving mechanism 2 in the horizontal plane is realized.

[0031] It should be noted that the top of the pipetting work box 1 is equipped with a T-shaped guide rail 13 that is slidably connected to the horizontal transverse moving seat 21. The horizontal transverse moving seat 21 has an auxiliary stabilizing slide rod 211 that passes through and is slidably connected to the horizontal longitudinal moving seat 24. The dual auxiliary functions of the T-shaped guide rail 13 and the auxiliary stabilizing slide rod 211 effectively improve the stability of the movement of the horizontal transverse moving seat 21 and the horizontal longitudinal moving seat 24, making the liquid picking mechanism 4 and the clamping mechanism 5 more stable during movement, reducing the impact of shaking on the test tube and liquid operation, and further improving the accuracy and reliability of the experimental operation.

[0032] Specifically, the lifting push rod 3 is fixedly installed at the bottom of the horizontal longitudinal moving seat 24; the lifting push rod 3 is a device that can realize linear telescopic movement, and it is fixedly installed at the bottom of the horizontal longitudinal moving seat 24.

[0033] Furthermore, auxiliary stabilizing telescopic rods 31 are provided at the four corners of the horizontal longitudinal moving seat 24 and the lifting seat 41; when the lifting push rod 3 drives the lifting seat 41 to move up and down, the auxiliary stabilizing telescopic rods 31 also extend and retract synchronously, providing additional support and guidance for the lifting seat 41.

[0034] Furthermore, the inner side of each V-shaped clamp 51 has a rubber pad; when the V-shaped clamp 51 is pushed closer together by the clamping push rod 52 to clamp the test tube, the rubber pad is in direct contact with the surface of the test tube. Due to the elasticity of the rubber pad, it can deform to a certain extent, thereby better conforming to the surface of the test tube and increasing the friction between the rubber pad and the test tube.

[0035] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A test tube clamping device for a pipetting workstation, comprising a pipetting work box (1) and a well plate positioning groove (11) disposed within the pipetting work box (1) for placing test tubes in a well plate, characterized in that: The top of the pipetting box (1) is provided with a dual-coordinate moving mechanism (2). The movable end of the dual-coordinate moving mechanism (2) is provided with a lifting push rod (3). The movable end of the lifting push rod (3) is provided with a liquid-taking mechanism (4). The liquid-taking mechanism (4) includes a lifting seat (41) fixedly installed on the movable end of the lifting push rod (3), at least three sets of liquid-taking needles (42) arranged in a linear array below the lifting seat (41), and a compensation push rod (43) fixedly installed on the bottom of the lifting seat (41) and whose movable end is connected to the liquid-taking needles (42) for driving them to move up and down a short distance. (41) A gripping connecting plate (45) is fixedly connected to the bottom by four connecting rods (44) arranged in a rectangular array. The gripping connecting plate (45) has an opening (451) for the liquid collection needle (42) to pass through. The bottom of the gripping connecting plate (45) is provided with a gripping mechanism (5) for holding the test tube. The gripping mechanism (5) includes V-shaped clamps (51) symmetrically arranged on both sides of the opening (451) and close to or far from each other, and gripping push rods (52) fixedly installed on the bottom of the gripping connecting plate (45) and whose movable ends are respectively connected to the two V-shaped clamps (51) at one end far away from each other.

2. The test tube clamping device for a pipetting workstation according to claim 1, characterized in that: The pipetting box (1) has observation windows (12) on both the front and rear sides.

3. The test tube clamping device for a pipetting workstation according to claim 2, characterized in that: The dual-coordinate moving mechanism (2) includes a horizontal transverse moving seat (21) that moves laterally at the top of the pipetting work box (1), a horizontal transverse lead screw (22) that is rotatably connected to the pipetting work box (1) and screwed to the horizontal transverse moving seat (21), a horizontal transverse motor (23) that is fixedly installed in the pipetting work box (1) and whose output shaft is connected to the horizontal transverse lead screw (22), a horizontal longitudinal moving seat (24) that moves longitudinally at the bottom of the horizontal transverse moving seat (21), a horizontal longitudinal lead screw (25) that is rotatably connected to the horizontal transverse moving seat (21) and screwed to the horizontal longitudinal moving seat (24), and a horizontal longitudinal motor (26) that is fixedly installed on the horizontal transverse moving seat (21) and whose output shaft is connected to the horizontal longitudinal lead screw (25).

4. The test tube clamping device for a pipetting workstation according to claim 3, characterized in that: The top of the pipetting work box (1) is provided with a T-shaped guide rail (13) that is slidably connected to the horizontal transverse moving seat (21). The horizontal transverse moving seat (21) has an auxiliary stabilizing slide rod (211) that passes through the horizontal longitudinal moving seat (24) and is slidably connected to it.

5. The test tube clamping device for a pipetting workstation according to claim 4, characterized in that: The lifting push rod (3) is fixedly installed at the bottom of the horizontal longitudinal moving seat (24).

6. The test tube clamping device for a pipetting workstation according to claim 5, characterized in that: Each of the four corners between the horizontal longitudinal moving seat (24) and the lifting seat (41) is equipped with a stabilizing telescopic rod (31).

7. The test tube clamping device for a pipetting workstation according to claim 6, characterized in that: The inner side of each V-shaped chuck (51) has a rubber pad.

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